U.S.S. GROWLER (SS-215) — war patrol report SS-215_GROWLER.pdf

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FF12-10/A16-3(5)
Serial: 0331
COMSUBPAC FILE NO. 47
U.S.S. GROWLER - FIRST WAR PATROL.
[STAMP: DECLASSIFIED]

SUBMARINES, PACIFIC FLEET
Care of Fleet Post Office,
San Francisco, California.
21 July 1942
[STAMP: COMMANDER SUBMARINES U.S. FLEET RECEIVED 1942 AUG 5 10 28]

From: The Commander Submarines, Pacific Fleet.
To : Submarines, Pacific Fleet.
Subject: U.S.S. GROWLER (SS215) - Report of First War
Patrol.
Enclosure: (A) Copy of subject report.

1. The first war patrol of the GROWLER was ex-
tremely well conducted and the results were most gratifying.
The attacks on the three anchored destroyers merit the highest
praise.

2. Every indication points to the fact that the
casualty which occurred to No. 9 torpedo tube was the fault
of operating personnel. The torpedo and warhead were un-
damaged - the warhead shows indications of having been forced
against the muzzle door while the door was in a partially
opened condition. Measurement of the guide stud shows an
elongation of one-half inch prior to breaking under heavy
strain. It appears that impulse air was admitted to this
tube. Mark 15 torpedoes when used in stern tubes of 1500
ton fleet submarines have a special guide stud manufactured
of material sufficiently strong to serve the purpose for
which the guide stud is intended.

3. Examination of Mark 6-1 exploders by exploder
shop personnel revealed that three were flooded. Flooding
appeared to occur at the base plate gasket.
However, each of these exploders functioned electrically and
mechanically on test.

4. The GROWLER experienced average water tempera-
tures of 45°. In order to prevent flooded torpedo afterbodies
and exploders, all submarines operating in areas where the
water temperature is low are cautioned to make a careful check
of:
(a) Torpedo handhole plates, plugs and connections,
particularly the igniter combustion pot con-
nection.

[STAMP: DECLASSIFIED ART. 0445, OPNAVINST 5510.1C]
[STAMP: 41777 FILMED BY OP 09B9C DATE 5/30/22]
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[STAMP: DECLASSIFIED]

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FF12-10/A16-3(5)                                      SUBMARINES, PACIFIC FLEET

Serial:    0831                                          Care of Fleet Post Office;
                                                         San Francisco, California.
                                                         July 21, 1942.

COMSUBPAC PATROL REPORT NO. 47
U.S.S. GROWLER - FIRST WAR PATROL.

CONFIDENTIAL

Subject:    U.S.S. GROWLER (SS215) - Report of First War
            Patrol.

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CONFIDENTIAL
U.S.S. GROWLER
Subject: - - - U.S.S. GROWLER - Report of First War Patrol. - - -

1. NARRATIVE

June 20, 1942.
0915(VW) Departed Pearl Harbor enroute Midway. Conducted Daily
training dives and drills enroute. Fired four (4)
rounds 3"/50 target ammunition during drills on June
21, 1942.

June 21, 1942
0729(W) Latitude 23°24' N., Longitude 162° 00' W., Sighted
B17; exchanged recognition signals; did not dive
(Plane #1).
1255(X) Latitude 24° 08' N., Longitude 163° 17' W., sighted
B17; exchanged recognition signals; did not dive.
(Plane #2).

June 23, 1942
1634(Y) Received NPM Fox No. 943.

June 24, 1942
0600(Y) Arrived Midway. Fueled to capacity. Charged torpedoes
for MTB's.
1035(Y) Reported for duty to Comtaskfor 8 by despatch.
1430(Y) Departed enroute Dutch Harbor. Made trim dive after
clearing harbor. Conducted daily training dives and
drills enroute. Fired six (6) rounds 3"/50 target
ammunition on June 25, 1942.
1645(Y) Latitude 28° 28' N., Longitude 177° 21' W., sighted
three PBY's exchanged recognition signals; did not
dive (Plane contact #3).
2230(Y) Received NPM Fox #160 (New Task Unit Designation).

June 25, 1942
0530 to Latitude 31° N., Longitude 177°W., sighted three (3)
0545(Y) PBY's. Exchanged recognition signals. Did not dive.
(Plane contact #4).
1115(Y) Replied by despatch regarding charts on board.
1200(Y) Latitude 32° 38' N., Longitude 176° 45' W., sighted
PBY. Exchanged recognition signals; did not dive
(Plane #5).

June 27, 1942
0043(Y) Received NPM Fox #489 - Operation order. Changed
course to proceed to patrol area.
2045(Y) Received NPM Fox #625.

June 30, 1942
0130(M) Entered Amchitka Pass.
0550(M) Entered assigned patrol area, forty-five miles East

- 1 - ENCLOSURE (A)
3

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CONFIDENTIAL

Subject: _ _ _ U.S.S. GROWLER _ Report of First War Patrol.

June 30, 1942 (Cont'd)
                  North Head, Kiska. Visibility low, varying from 1/4 to
                  3 miles. Navigated by sounding and Radar. Proceeded on
                  surface until
0944(M)           At point 5 miles East of Sirius Point, Kiska, submerged
                  for patrol. Visibility decreased, surfaced. Fog cleared
                  almost immediately, Kiska Island becoming visible, dist-
                  ant 2 miles, so re-submerged and commenced high periscope
                  patrol one (1) mile North of 100 fathom bank.
1918(M)           Visibility one (1) mile - surfaced.

July 1, 1942
0343(M)           Submerged. High periscope patrol.
0901(M)           Surfaced due to low visibility. Decided to remain on
                  surface in North of Hundred fathom bank as long as
                  visibility was less than four (4) miles.
1105(M)           Submerged.
1730(M)           Surfaced.
                  Note: This area subject to sudden clearing. Visibility
                  will be 500 yards, suddenly increase to five (5)
                  or more miles.

July 2, 1942
0311(M)           Submerged. Visibility good.
0750(M)           Fix on Kiska showed decided set to East. Decided to
                  reconnoitre Kiska Harbor although orders said to stay
                  out of 100 fathom area until it was determined by
                  passage of enemy vessels that that area was not mined.
                  Reasoned as follows:
                  (1) Area covers approximately 20 square miles. Would
                  (2) Under visibility conditions usually obtaining, fixes
                  are hard to obtain, position is usually doubtful.If
                  mined, enemy would deny themselves use of area as
                  well as our use of it.
                  (3) Would have to enter the area if the remainder of the
                  mission (to observe Kiska) was to be accomplished.
                  Proceeded toward point bearing 085° T., distance 4-1/2
                  miles from North Head. Took frequent fixes.
1112(M)           Latitude 52° 00' N., Longitude 177° 40' E., sighted
                  Japanese Navy Reconnaissance float plane, single engine,
                  biplane similar to type 95 recognition silhouettes.
                  bearing 250°, course 070° headed at this vessel. Went
                  to 120 feet as plane was sighted at end of long periscope
                  exposure. Exposed periscope 15 minutes later. Plane
                  apparently had been headed in for landing at Kiska.
                  (Plane #6)
1208(M)           Latitude 51° 59' N., Longitude 177° 40' E., sighted
                  enemy patrol boat (small steamer) bearing 235° T., range
                  7000 yards, patrolling on various courses on North-South

                                    -2-                               ENCLOSURE (A)
                                                                                              [HANDWRITTEN: 4]

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CONFIDENTIAL
Subject: U.S.S. GROWLER - Report of First War Patrol.
1405(M) line from North Head. At same time, definitely identi-
fied a sunken AP (stern down) at position 1/2 mile
bearing 190° T., from North Head. (Contact #1).
Changed course to proceed Northward.
Following information obtained:
(a) No shore activity was observed on either Kiska or
little Kiska from ranges as close as 3000 yards.
(b) Planes and patrol boats indicate presence of enemy
ships.
(c) If enemy ships are present, they are anchored in
coves to West of North Head and are not visible from
seaward.
(d) Growler crossed 100 fathom bank on line from North-
east to Southwest and from South to North. Feel
certain no mines are in the area but that mines may
be planted across harbor entrance. (No basis to
assume this is true).
Based on information obtained decided to patrol submerged
two (2) to five (5) miles Northeast of Kiska Harbor
entrance in good visibility, to retire in to North of
100 fathom curve in low visibility, or at dark, due to
currents encountered in 100 fathom area.
1655(M) Latitude 52° 06' N., Longitude 177° 45' E., sighted two
biplanes bearing 240° T., distance 8 miles, gliding in
for landing at Kiska Harbor. (Plane contact #7).
2050(M) Surfaced.
2312(M) Received NPM Fox #115.

July 3, 1942
0325(M) Submerged; stood in toward Kiska Harbor.
0626(M) Latitude 52° N., Longitude 177° 42' E., sighted one (1)
Kiwani si flying boat, type 97, at 1000 feet altitude,
just after taking off from Kiska Harbor. (Plane #8).
At same time sighted two (2) patrol boats patrolling as
previously stated. Sighted several times during the day.
(Contact #2).
1125(M) Latitude 51° 48' N., Longitude 177° 41' E., sighted float
type plane similar to type 95, taking off. (Plane #9).
1517(M) Latitude 52° N., Longitude 177° 41' E., sighted (a) bi-
plane float plane landing in Kiska (Plane #10), (b) two
engine flying boat, similar to type 97, which came in
from Southwest and landed in Southwest area of Kiska
Harbor. It landed between two (2) other flying boats
which had not been distinguishable due to shore back-
ground. (Plane contact #11).
1529(M) Visibility getting poor. Retired to North.
1628(M) Surfaced. Visibility 500 to 1000 yards. Started Radar.
Visibility poor remainder of day.

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ENCLOSURE (A)
[HANDWRITTEN: 5]

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CONFIDENTIAL
Subject: U.S.S. GROWLER - Report of First War Patrol.

July 4, 1942
0848(M) Outside 100 fathom bank due to poor visibility.
          Heard loud explosion from direction of harbor.
0936(M) Picked up plane (Plane #12) on Radar, distance 8 miles.
          When it closed to within 2 miles, at which time it
          could be heard at
0938(M) Submerged. Visibility 500 yards.
1012(M) Surfaced. Visibility same.
1020(M) Submerged. Visibility 3 miles to South and East, at
          least 12 miles in other directions since Pillow Rock is
          visible. Stood in toward Kiska Harbor. Visibility was
          variable all day varying from zero to 5 miles. Was able
          to get fixes. Maintained Patrol between 52° 03' and 52°
          07' N., 177° 45'E.
1910(M) Surfaced.
          Did not get to observe harbor today. Plan to stand in
          on surface to point 5 miles to Northeast prior to 0300,
          July 5. Have learned how to use the Radar on adjacent
          peaks.

July 5, 1942
0330(M) In position 5 miles Northeast of Kiska Harbor, visibility
          one (1) miles.
0400(M) Visibility increased rapidly so at
0401(M) Submerged. Alternately good and poor visibility.
0413(M) Latitude 52° 01' N., Longitude 177° 44' E. Sighted 3
          vessels bearing 244° True, estimated range 8000 yards,
          estimated course 090° true to 110° true. (Contact #3).
          Only certain fact the angle on the bow is port. Believed
          vessels to be reported cruisers leaving Kiska. Came to
          course 060° T., speed 6 knots. Made all tubes ready.
          Something wrong with #9.
          No more observations because of haze until
0428(M) Vessels now bearing 265° T., angle on bow 90° or more
          port, headed toward Kiska. Swung to intercept off
          entrance.
0439,0452 Observations by which bearings alone were obtained indica-
& 0511(M) ted vessels were stopped or anchored. Headed for them.
0455(M) Tubes had been flooded too long. Blew down all tubes.
          Backed out torpedoes in 3 and 4, checked them over to see
          if dry. Approached
0522(M) Vessels are destroyers.
0539(M) No. 3 and 4 tubes reloaded; torpedoes dry. Approached
          DD's at slow speed, silent running in case they were
          maintaining sound watch. If any activity was noted,
          planned to close at high speed. DD's were 1700 ton,
          Amagiri or Fubuki class.
0555-0600 ATTACKS NO. 1, NO.2 and NO.3.
          Conducted attack on three DD's. Fired one torpedo
          (heavy head) at each of first two. Both hit amidships.

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[HANDWRITTEN: 6]

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CONFIDENTIAL
Subject: U.S.S. GROWLER - Report of First War Patrol.

Fired two torpedoes (light heads) at last destroyer.
First missed; second hit under foremast.
06-00-30 Third destroyer fired torpedoes from tube nest between
(M) stacks.
06-00-35(M) Ordered 100 feet.
06-00-50(M) Fourth torpedo hit third DD under foremast - heavy flames,
06-01-20(M) Torpedoes swished down each side of Growler. Heard on
sound and by ear. Swung hard left away from DD's which
were emitting explosions. Counted three (3) heavy ex-
plosions and 53 lighter ones. Growler rocked consider-
ably. When we fired last torpedo we were about 300 yards
directly ahead of first DD and 200 yards on port bow of
second. Heard screws from third destroyer about two min-
utes. They stopped and were heard no more. The torpedoes
fired at Growler upset observation plan; she robbed
Growler of initiative in evasion. Had planned to remain
at periscope depth to check on patrol vessels and planes.
After going deep and due to disturbance of explosions,
which prevented good listening, decided to remain deep
and retire. Continued toward deep water, increasing
depth in case of planes.
0615(M) Picked up screws of patrol vessel bearing 240° T., (Con-
tact #4). Kept him astern. No pinging heard.
0637(M) Two loud explosions to starboard; probably bombs, esti-
mated distance 500 yards. Patrol vessel still astern.
JK - QC knocked out, shaft forced up and resettled. Head
warped. Took sounding immediately - 72 feet under keel.
Thought maybe Growler, which was at 200 feet, had hit
bottom. Wondered if we were emitting air bubbles so a
plane spotted us.
0646(M) Ordered periscope depth. No. 2 (high) periscope came up
six feet and jammed hard. Later discovered last explos-
ion had jarred handles out. They caught on side of
periscope well.
0647(M) Sighted float type biplane bearing 090° T., distance one
mile, altitude 300 feet (Plane #13). Went to 200 feet.
0724(M) Periscope observation showed clear horizon and sky. Could
see only a big column of smoke in direction of attacked
destroyers. Shore background prevented good observation.
Retired to North.
0817(M) Sighted float type biplane bearing 203° T., distance five
miles. (Plane #14).
1135(M) Surfaced. Retired North at high speed. Started inspec-
tion and repair. No damages except to JK and periscope -
latter usable.
1327(M) Changed course to head for Kiska.
1339(M) Reported attack and damage to Comtaskgroup 8.5.
1506(M) Submerged 12 miles North of Kiska Harbor and stood South.
1851(M) Surfaced due to poor visibility. Went North; took up
patrol 3 to 8 miles East of Sirius Point.

-5- ENCLOSURE (A)
7

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CONFIDENTIAL
Subject: U.S.S. GROWLER - Report of First War Patrol.
2026(M) Received NPM Fox #735!

July 6, 1942
0200(M) Stood in toward Kiska Harbor on surface; visibility 1
mile.
0540(M) Submerged and stood toward scene of attack. Visibility
about 2 miles.
0741(M) Sound picked up whining noise bearing 210° true. Visibility
was low. Had just completed periscope observation about
0738. Had sighted nothing. On observing now, sighted
patrol vessel (contact #5) distance 100 yards headed
directly for Growler. Swung away to course 030° T.
Apparently undiscovered. Heard no screws but did hear
pinging which continued.
0902(M) Pings now bearing 230° T. Picked up screws on bearing 285°
true, (contact #6). Screws sounded like those of patrol
vessel. Both patrol vessels trailed Growler until 1130.
Kept retiring to Northeast until
1212(M) Changed to South in attempt to run around patrol vessels
and close Kiska. Evaded them.
1626(M) Visibility now so poor that no observations of Kiska
Harbor possible. Retired to North,
1910(M) Surfaced, visibility zero.
2001(M) Heard eight (8) explosions in direction of Kiska Harbor.
2105(M) Sound picked up pings and screws bearing 120° true and
302° true, (Contact #7 and 8). Sounded like patrol
vessels. Manned guns and closed each bearing in turn -
never sighted vessels. Heard pings and screws intermitt-
ently until 2240.

July 7, 1942
0200(M) Proceeded down Eastern edge of 100 fathom bank, intending
to approach Kiska from East, visibility 2 miles.
0713(M) Submerged, course 260° T.
0715(M) Heard pinging, bearing 270° T. (Contact #9). Different
from patrol boats, maybe a destroyer. Finally all pings
were directly on Growler. Could see nothing in periscope.
Screws heard later were not like patrol boat.
1738(M) Reversed course. Started evasive tactics.
0746(M) Heard depth charges to Westward.
1230(M) Lost contact. Retired to Northeast intending to round
McArthur Reef and come in from North.
2322(M) Surfaced. Rounded McArthur Reef. Visibility practically
zero.
1400(M) Fog cleared. Sighted vessel bearing 210° T., range 6000
yards, Easterly course, (Contact #10). Believed to be a
heavy cruiser. Submerged, swung to course 120° T.
1403(M) Fair periscope observation - target indistinct. Estimated
course 070° T., range 4000 yards. Closed; could hear noth-
ing by sound. Began to suspect a destroyer lying to list-
ening.
-6- ENCLOSURE (A)
[HANDWRITTEN: 8]

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CONFIDENTIAL
Subject: U.S.S. GROWLER - Report of First War Patrol.

0415(M) Small change of bearing indicates vessel is practically
        stopped or has large port angle on bow and is headed away
        at long range. Debated whether to surface but since fog
        has habit of suddenly lifting, decided to remain sub-
        merged. Searched for vessel until
1503(M) Must have passed the vessel. Started running awash search-
        ing.
1543(M) Blew tanks dry. Searched Eastward to North of Segula.
        North of that Island weather cleared to unlimited visib-
        ility to East. No vessel in sight. Searched Rat Island
        passage.
1645(M) Reported missing cruiser to Comtaskgroup 8.5.
        Decided to return to McArthur Reef and search to North-
        ward.
1750(M) Sighted heavy destroyer, (contact #11), bearing 0° T.,
        lying to or cruising at slow speed, course East, range
        2000 or less yards. GROWLER headed 090° T., submerged.
        Believed GROWLER was sighted first as visibility was
        better to Southward.
1752(M) DD headed directly for GROWLER, range 1500 yards or less,
        speed 15 knots or more (bow wave nearly to forecastle).
        Started to fire but decided it would be a waste of
        torpedoes. Range estimate was poor; gyro angles would
        have been 120° or more. Big spread would have been
        required. Furthermore, he was headed astern (angle on
        bow 5° port). Went ahead full and started for 250 feet.
        First charge of an eleven (11) depth charge barrage.
1757(M) Swung hard left to get tail away. First charge 200 to 300
        yards away on port quarter; remainder all astern. Nearest
        estimated 100 yards. Last dropped at 1800(M).
        Started evasive tactics running North as much as possible.
        Damage as follows:
        1. Three (3) lights (not shock mounted) broke in after
           torpedo room.
        2. Stern planes operate jerkily.
        3. Propellers make a clicking noise at speeds over 2 knots.
1812(M) Head pinging, apparently not on us.
1834(M) Pinging again. Had heard no screws. Pinging now continuous
        Created knuckles, kept pinging aft - worked off to North
        as silently as possible.
1842(M) Pinging weak but in our direction.
1852(M) Pinging louder, coming closer. Definitely on GROWLER;
        bearing 170° T. Created another knuckle and got behind it.
1854(M) DD getting close, about 10° on starboard quarter. When
        bearing was 160° relative and screws of destroyer speeded
        up, swung away at full speed; started rigging in QB
        sound gear.

-7- ENCLOSURE (A)
[HANDWRITTEN: 9]

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[HANDWRITTEN: 2nd COPY]
[HANDWRITTEN: 16E3]
[STAMP: RECEIVED]
[STAMP: FILES]
[STAMP: OCT 20 1942]
[STAMP: ROOM]
[HANDWRITTEN: ROUTE 10-16E3]
[HANDWRITTEN: (Rg File No. A16-3(23)/SS]
[HANDWRITTEN: Inc No. 215]
[HANDWRITTEN: C No. 3]
[HANDWRITTEN: Jmp No. 5]
[STAMP: RECEIVED]

FF12-10/A16-3(5) SUBMARINE FORCE, PACIFIC FLEET
Serial 01163
Care of Fleet Post Office
San Francisco, California.
October 8, 1942.
[STAMP: CONFIDENTIAL]
[STAMP: DECLASSIFIED]
COMSUBPAC PATROL REPORT NO. [HANDWRITTEN: 75.]
U.S.S. GRO LER - SECOND WAR PATROL.

From: The Commander Submarine Force, Pacific Fleet.
To : Submarine Force, Pacific Fleet.
Subject: U.S.S. GRO LER (SS215) - Report of Second
War Patrol.
[HANDWRITTEN: 21 PM 1 59]
Enclosure: (A) Copy of Comsubron 8 Conf. ltr. FC5-8/A16-3
Serial 0103 of September 24, 1942.
(B) Copy of Comsubdiv 81 Conf. ltr. FB5-81/A16-3,
Serial 033 of September 24, 1942.
(C) Copy of Subject War Patrol.

1. The second war patrol of the GRO LER was carried
out in a very satisfactory manner. The area assigned was
covered thoroughly, all attacks were aggressively prosecuted,
and results obtained were gratifying.

2. The comments in enclosure (A), regarding the
evasive tactics employed by the GROWLER during depth charge
attacks, are concurred in.

3. As disclosed in this patrol report, the Japanese
practice of firing deck guns and dropping depth charges at random
whenever a torpedo track is sighted or the presence of sub-
marine is suspected is again noted. Commander Submarine Force,
Pacific Fleet, is pleased to note that the Commanding Officer of
the GRO LER did not permit these tactics to distract him from
pressing home his attacks.

4. The success obtained on attack number five and
the negative results on attacks one and four, under similar con-
ditions, offer a most instructive comparison of the different
methods employed. When visibility conditions permit night
periscope observations and when the situation permits reaching a
favorable attack position submerged, the night periscope attack
is to be preferred to the surface attack.

5. On the second attack, the follow-up for an
additional shot on the transport, already damaged by one torpedo
hit and observed to be down by the head with her screw out of
the water was admirably done. Though anti-submarine escorts

- 1 -
DECLASSIFIED-ART. 0445, OPNAVINST 5510.1C
BY [HANDWRITTEN: OP-09B9C] DATE [HANDWRITTEN: 5/30/72]
[STAMP: DECLASSIFIED]

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[HANDWRITTEN: 1]
FF12-10/A16-3(5) SUBMARINE FORCE, PACIFIC FLEET
Serial 01163 Care of Fleet Post Office,
San Francisco, California,
October 8, 1942.

CONFIDENTIAL
COMSUBPAC PATROL REPORT NO. 75.
U.S.S. GROWLER - SECOND WAR PATROL.
Subject: U.S.S. GROWLER (SS215) - Report of Second
War Patrol.

— page 26 —
CONFIDENTIAL

U.S.S. GROWLER - REPORT OF SECOND WAR PATROL - PERIOD FROM AUGUST
5, 1942. TO SEPTEMBER 23, 1942. AREA. OPERATION ORDER NO.
69-42 OF AUGUST 2, 1942.

NARRATIVE:

August 5, 1942
0900 (NW) Departed Pearl Harbor enroute Midway under escort.
             Conducted daily dives and drills, fired 10 rounds
             3"/50 cal. target and 50 rounds each .50 cal. and
             .30 cal. ammunition.

August 6, 1942
0725 (W) Latitude 23-45N, Longitude 162-03W. Sighted U.S. Army
             B17 plane distance 4 miles. Exchanged recognition
             signals. Did not dive (Plane #1)
1235 (C) Latitude 24-12N., Longitude 163-13W. Sighted U.S. Army
             B-17 plane (distance 6 miles) which did not approach.
             (Plane #2).
1430 (K) On completion of dive found JK-40 shaft and one lead
             flooded. This sound gear later grounded out.

August 8, 1942
0920 (K) Latitude 25-56N., Longitude 167-3W. Sighted U.S.
             Navy, P.B.Y. plane (distance 6 miles) which approached.
             Fired recognition flares - did not dive (Plane #3).

August 9, 1942.
0811 (I) Moored at Midway, fueled; U.S.S. FULTON repaired
             JK-40 sound gear.

August 10, 1942
0717 (Y) Underway for patrol station. Conducted daily drills
             enroute.
1700 (I) JK-40 sound gear shaft found flooded. NOT grounded
             out. Alternated one engine and two engine speeds
             enroute to station. No submerged operations except
             for training. No contacts.

August 19, 1942
0022 (K) Received NPM #559 regarding crippled cruiser which
             was out of reach of this vessel. No action taken.

August 21, 1942
1100 (I) Entered Eastern edge patrol area. Continued to stand
             toward TAIWAN.

August 23, 1942
0500 (H) Submerged 30 miles East TAIWAN near KASHO TO. Main-
             tained high periscope patrol.

- 1 - ENCLOSURE (C)

— page 28 —
CONFIDENTIAL
Subject: U.S.S. GROWLER - Report of SECOND War Patrol.

0757(H) Fired three torpedoes, 95-100 track, range 2500 yards.
         Target maneuvered to avoid. Missed. (Attack #2).
         Size of target and over anxiousness overcame better
         judgement.
0800(H) Target commenced firing two guns. Continued for five
         minutes. No projectiles near GROWLER.
0803(H) Two large sampans or fishing boats standing toward
         firing position.
0808(H) Depth charges started dropping. Twenty-four dropped
         in next three minutes. GROWLER remained at periscope
         depth, running North. No vessel within 1000 yards.
0915(H) Sighted 3 large sampans; started evasive tactics to
         Westward.
0930(H) Depth charge attack astern. No vessel nearer than 700-
         500 yards. Nine (9) charges. Remained at periscope
         depth.
0935(H) Three (3) more depth charges - range 500 yards or
         greater. Forced to retire Southwest.
1035(H) Six (6) explosions close aboard.
1035-40(H) Sighted plane bearing 090° T., distance one mile.
         Went to 150 feet. (Plane #4).
1039(H) Seven (7) explosions farther away.
1050(H) Two vessels screws heard on bearings 060-065 true.
         Screws intermittently heard.
1107(H) Four (4) depth charges at least 1000 yards away.
1140(H) Heard nothing for twenty minutes - came to periscope
         depth. Patrol sampans 4000-6000 yards to East.
         Changed to North to again approach TAKAO.
1159(H) Sighted convoy bearing 310 T., distance 8 miles. Only
         tops and stacks seen. Convoy consisted of 5 ships,
         one destroyer and two planes escort on zig zag courses
         standing toward PESCADORES Channel. Impossible to
         attack. (Plane #5) (Contacts #4-9). Continued North
         toward TAKAO.
1308(H) Sighted ship bearing 346 T., distance 6 miles, zig
         zagging on base course 180 T., speed 8. Started
         approach. (Contact #10).
1331(H) Ship changed course 120°to right to Northwest. Later
         decided that this vessel was waiting for patrol boat
         escort. Continued closing.
1340(H) Ship again headed South. Four patrol boats astern,
         overhauling it.
1358(H) Fired three torpedoes on 90° S. track, range 900 yards.
         One hit forward. Ship took down angle by bow with
         screw clear of water. Ship is AP. Japs went to abandon
         ship stations. Started firing gun. Target swung
         completely around to course North. (Attack #3).

-3-
ENCLOSURE (C)

— page 35 —
CONFIDENTIAL
Subject: U.S.S. GROWLER - Report of Second War Patrol.

2. WEATHER.
Normally clear, unlimited visibility with occasional
rain squalls when near TAIWAN. Seas were glassy calm ex-
cept for four days when moderate typhoons occurred.
There were two days when visibility was 5 miles or less.

3. TIDAL INFORMATION.
As indicated on charts and in the Asiatic Pilot,
Vol. III (H.O. 124).

On September 13th, after the moderate typhoon of
11-12 September, the currents North of TAIWAN were es-
pecially strong. The tides were at spring at the same
time. Several times during that date rotary currents
were encountered. Depth control was difficult. Several
times on September 13th, when steaming at 3 or 4 knots,
this vessel made good courses 45° to 90° right or left
at a speed of 5 knots.

4. NAVIGATIONAL AIDS.
All lights except in PESCADORES CHANNEL were kept
burning.

- 10 - ENCLOSURE (C)

— page 37 —
CONFIDENTIAL
Subject: U.S.S. GROWLER - Report of Second War Patrol.
CONFIDENTIAL
Subject: U.S.S. GROWLER - Report of Second War Patrol.

— page 38 —
CONFIDENTIAL

The following comments are submitted regarding attacks:

(a). ATTACK NO. 1 - It would have been an ideal set up for a
gun attack except for the proximity to shore. There was
a possibility of shore batteries and I did not like the
idea of possibly blinding the ship control party by our
own gunfire and then finding ourselves in a trap. Further-
more, it would have taken some time to sink the target with
3" projectiles. At any rate, after breaking out ammunition
I decided against using gun.

(b). ATTACK NO. 2 - The data was good or the target would not
have had to maneuver. No excuse is offered, however, a hope
was held that the torpedoes would not be seen running
through the fishing fleet. Never fired thereafter at large
ranges.

(c). ATTACK NO. 4 - Should have run further ahead of the target
then closed track and fired from submerged condition.
Tried to get 5° right on last torpedo when target was seen
to be swinging away but it was too late.

(d). ATTACK NO. 8 - The data on this attack was thought to be
accurate. The enemy course estimate was exact. Range was
correct to within 100 yards it is believed. Type of
target precluded greater speed than that used. However,
different currents affecting target and submarine during
the approach might and would have caused an error in speed
estimate. Hence, a total spread of 4° was used, to cover
possible speed errors due to currents. Variable currents
had been experienced all day as determined by fixes. A
change of position of one half-mile showed different
currents, both in direction and strength.

(e). GENERAL NOTE - All torpedoes apparently ran hot, straight
and normal on all attacks. No misses are attributed to
faulty performance.

- 13 - ENCLOSURE (C)

— page 42 —
8-SIA/A16-3
                                                                                             ed
A16-3

Serial 0103

CONFIDENTIAL                                                      September 24, 1942.

From:       Commander Submarine Squadron EIGHT.
To :        Commander Submarines, PACIFIC FLEET.

Subject:    Second War Patrol, U.S.S. GROWLER; Comments on.

Reference:  (a) CO GROWLER; letter file SS215/A16-3 Serial
                0142 of September 23, 1942 and Enclosure
                (A) thereunder.

            1. The Commanding Officer, Officers and crew of
GROWLER are to be congratulated upon a very aggressive second
war patrol.

            2. In conducting evasive tactics, the practice of
the Commanding Officer of remaining at periscope depth where
he can see, except when in very close proximity to attacking
surface vessels or under actual air attack, particularly is
noted. The assurance with which the conduct of successful
evasive tactics is reported probably is due in considerable
measure to staying up, whenever practicable, where the exact
movements of the enemy can be observed. This practice is
believed much to be preferred to going deep and accepting
blindness, unless forced to do so.

            3. The waters in which GROWLER operated on this
patrol appear most productive and to offer very good hunting.
Numerous anti-submarine patrol craft are reported, but it is
noted the Commanding Officer does not consider them very
effective at present except for their nuisance value. The
previously noted procedure of armed enemy vessels opening
fire with their guns immediately in the general direction of
a submarine, as an anti-submarine measure, again is reported.

            4. A percentage of 33.3 hits of torpedoes fired
was obtained. This is creditable and above average performance,
but it is to be regretted that GROWLER having repeatedly
aggressively gained extremely favorable firing position, could
not have attained an even higher percentage of hits.

                                -1-                     ENCLOSURE (A)

— page 43 —
FC5-8/A16-3
Serial 0103

CONFIDENTIAL
Subject: Second War Patrol, U.S.S. GROWLER; Comments on.

                                                                ed
                                                    September 24, 1942.

5. Individual attacks are analyzed as follows:

    Attack number one. Target was aware of presence of sub-
    marine and was observed to take prompt avoiding action. This
    probably occasioned both misses, although there perhaps is a
    possibility of torpedo depth performance having caused the
    failure of the second torpedo to be effective. Under the
    circumstances, acceptance of a 180° track angle for the first
    torpedo fired may be open to question. Breaking off of the
    attack after firing the second torpedo, for the reasons ad-
    vanced by the Commanding Officer, is considered sound.

    Attack number two. Misses on this attack were occasioned
    by the opportunity to avoid afforded the alert personnel of
    the target by the firing range (2500 yards).

    Attack number three. Firing of an initial three torpedo
    spread against this target is felt justified in view of the
    previously observed radical maneuvers of the target and because
    it was a wing torpedo of this spread that hit.

    Attack number four. All three torpedoes fired on this
    attack missed due to target maneuvers to avoid. The attack
    was delivered on the surface in bright moonlight. This ap-
    parently convinced the Commanding Officer that such attacks
    were ill advised, for on

    Attack number five he made a submerged periscope attack
    under similar conditions and secured two hits from the two
    torpedoes fired, which sank the target.

    Attacks numbers six and seven were well executed, suc-
    cessful attacks which resulted in sinking each target.

    Attack number eight. The causes of four misses on this
    attack are impracticable to determine. Firing of a four
    torpedo spread under the circumstances seems a questionable
    procedure.

                                -2-
                                ENCLOSURE (A)

— page 45 —
COMMANDER SUBMARINE DIVISION EIGHTY-ONE
FB5-81/A16-3
Serial (033) (Ss)
CONFIDENTIAL Care of Fleet Post Office,
San Francisco, California,
September 24, 1942.

From: The Commander Submarine Division EIGHTY ONE.
To: The Commander Submarines, PACIFIC FLEET.
Subject: U.S.S. GROWLER (SS215) - Second War Patrol;
Report of.
Reference: (a) Comsubpac Patrol Report No. 48.

1. The second war patrol of the GROWLER was well
conducted. In seven of the eight attacks made, the Commanding
Officer by aggressive action, was able to gain a firing
position each with an advantageous track angle and within
1200 yards of the enemy. Furthermore, his choice of retain-
ing the initiative during evasive tactics, by remaining at
periscope depth, undoubtedly prevented the GROWLER from
receiving more punishment.

2. The following remarks, relative to the GROWLER'S
torpedo attacks, are submitted in accordance with reference
(a):

ATTACK NO. 1
The first torpedo was fired on an unfavorable track angle;
second torpedo was fired on a favorable track angle at
approximately 600 yards. Faulty depth performance of
second torpedo, at this range, was probable cause of miss.

ATTACK NO. 2
Failed due to excessive firing range and target sighting
submarine or torpedoes and maneuvering to avoid.

ATTACK NO. 3
Two hits were made out of four torpedoes fired.

ATTACK NO. 4
Submarine sighted on surface; target maneuvered to avoid.

ATTACK NO. 5
Two hits were made out of two torpedoes fired.

-1- ENCLOSURE (B)

— page 48 —
[HANDWRITTEN: 2nd COPY]

SS215/A16-3                                     U.S.S. GROWLER (215)

                                                                Care of Fleet Post Office,
                                                                San Francisco, California,
                                                                December 10, 1942.

[STAMP: SECRET]
[STAMP: DECLASSIFIED]
From:                                           The Commanding Officer.
To :                                            Commander Task Force Forty-two.

Subject:                                        Third War Patrol, U.S.S. GROWLER - Report of.

Reference:                                      (a) Subpacflt conf ltr No. 12-42.

Enclosure:                                      (A) Subject report.

1.                                              In accordance with reference (a) enclosure (A)
is forwarded herewith.

                                                                H. W. GILMORE.

[STAMP: DECLASSIFIED-ART. 0445, OPNAVINST 5510.1C]
BY [HANDWRITTEN: OP-09C] DATE [HANDWRITTEN: 5/30/72]                                                              [STAMP: DECLASSIFIED]

— page 49 —
SECRET
USS GROWLER - REPORT OF THIRD WAR PATROL - PERIOD FROM OCT 22,
1942, to DEC 10, 1942. AREA ______ OPORD NO. ______ .

1. PROLOGUE: Arrived Pearl Sept 30, 1942, from Second War Pat-
rol, commenced refit on Oct 1, 1942, by Submarine Base personnel
and docking for propeller replacement by Navy Yard Forces. SJ
Radar and 20 MM gun installed. Readiness for sea Oct 21 1942.
Calibrated but wiping was unnecessary. One day devoted to train-
ing on Oct 20, 1942.

2. NARRATIVE: Oct 22 1942: 0900VW, Departed Pearl in company
with U.S.S. TARPON under escort.

1945 VW - Escort departed. TARPON diverged on course to south-
ward. Conducted daily dives and drills enroute station.

Oct 23, 1942 0733X - Sighted US Navy PBY, exchanged recogni-
tion signals. PLANE #1.

1225X - Sighted US Navy PBY which did not approach, PLANE #2.

1300 X - Fired 5 rounds 3"/50 target ammunition and tested 20
MM and .30 cal machine guns.

Oct 26, 1942, 2152(Y) - Rec'd area assignment and task unit
designation from Task Group Commander, message Nr. 20.

Oct 27, 1942, 0400Y - Acknowledge rec't of message Nr 20 giv-
ing position.

Nov 2, 1942, 0116K - Rec'd Message Nr 32 giving change in
broadcast schedule.

1100K - Entered area at eastern edge. Continued on surface
until 1230K when Tanga Island was distant 20 miles, submerged.
Adjusted SJ radar at night using island peaks. From informa-
tion available and estimate of probable Japanese movements, de-
cided to cover the East Cape to Truk route as the most prob-
able track. Patrolling at the southern edge of the area would
best cover all probable lanes through this area from Shortlands,
Buka and Rabaul to Truk.

Nov 3 to 16, 1942, Maintained patrol in area. Reconnoitered
east coast of New Ireland and western cove of Tanga Island.
Lights were observed on latter on night of November 11, 1942.
From the number of lights, believed Japs might be engaged in
construction work on this island. However, inspection of cove
and shores from range of 3000 yards disclosed nothing.
Held daily drills in ship and fire control.

Nov 17, 1942, 0140 K - Rec'd Message Nr 55 re Marus arriving at
point 430 miles west of northwest corner of GROWLER area.

-1-
ENCLOSURE (A)

— page 50 —
SECRET
0205K - Underway at two-engine speed to intercept Marus.
1730 K Slowed to one engine speed due to heavy head seas.

Nov 19, 1942, 0320K - Arrived at estimated point of intercept.
Visibility poor. Seas too heavy for efficient high peri-
scope patrol submerged. Remained on surface.
1717K - Received Message Nr 56. Apparently there has been a
change in area limits which GROWLER did not receive.
Definitely this vessel is not in proper position for
interception of Marus.
Checked every message rec'd. All Subs 42 messages
nr. 13 to 58 inclusive on hand and fully decoded. Pro-
ceeded eastward toward original area since GROWLER is
not in position desired by Task Group Commander.
2205K Sent GROWLER message nr. 2 giving information as to
position and movement in hopes of clarifying situation
as to areas.

Nov 20, 1942, 0343 K - Rec'd message nr 57 giving new area as-
signments.
1209K - Made radar contact with plane, range 6 miles. Skies
completely overcast. Did not sight it. Submerged.
Plane #3.
1246K Surfaced, awash condition. Sighted plane bearing west,
range 6-10 miles. Radar had not picked up the plane.
Resubmerged and remained down during daylight.Plane 4.
1920K Sent msg nr 3 regarding nonreceipt (previous tc msg nr
57) of change of area and requesting clarification. Re-
alized that Japs would probably D/F this vessel, but be-
lieved msg nr 3 was justified because, if GROWLER was
at fault in its communications, doubt and confusion
might arise with the result that this vessel might be
in the same area as another US submarine with possible
fatal consequences.
2220K Rec'd msg nr 58 regarding Jap submarines and destroyers
enroute to Rabaul. Following times of transit for
enemy vessels through GROWLER area were estimated:
Destroyers - 0400 to 2400K, Nov 22.
S/m's first group - 1600K or later, Nov 22.
S/m's second group - 1200 K or later Nov 23.
Plan to cover Truk-Kavieng and Truk-Steffen Strait
routes, remaining north of 100 fathom curve as southern
boundary. Deemed it inadvisable to cross 100 fathom
curve because:
(a) Japanese may have mined part of shallow area.
(b) Charts available are not very good.
(c) That area is probably under most intensive air and
surface patrol.

Nov 21, 1942 - Weather bad, with moderately heavy seas, visi-
bility fair to poor with frequent rain. Submerged pat-
rol during day, surface at night along probable enemy
tracks.
2034K Rec'd message nr 59 clarifying communication situation.

-2-
ENCLOSURE (A)

— page 51 —
SECRET

Nov 22, 1942. 0310K - Obtained first fix in 46 hours. GROWLER
30 miles farther east than estimated. Headed westward
to get on Truk route. Poor to fair visibility all day
due to rain.
1942K Rec'd msg nr 61 regarding time of arrival of enemy sub-
marines at Rabaul. Estimate following times of trans-
it of this area:
First group - any time after 2200 this date. Probably
already by and in the straits.
Second group - any time after 1400, Nov 23.

Nov 23, 1942 - Obtained two celestial fixes during darkness and
maintained patrol along Truk route, surface during dark-
ness, submerged during daylight. Frequent rain squalls.
1015K Sighted type 97 Mitsubishi Army heavy bomber on course
080 T, range 8-10 miles bearing 050 T. Plane #5.
1525K Visibility became poor due to frequent rains. Continued
poor until surfacing at 1838.
1843K Sighted searchlight, lights of two planes which were
evidently used as signals since they were turned on
and off at intervals and a blinking surface or land sig-
nal light in direction of Kavieng, bearing 150 T, range
10-15 miles. Planes #6 and 7.
Immediately changed course to 160 T, speed 15 knots.
Closed enemy positions, hoping to find submarine group
entering Kavieng. Battery was low. Charged at high
rate.
1912K Last time any light was seen.
1935K Visibility to southeast became poor due to rain squalls
and land background. Horizon behind this vessel was
excellent, silhouetting us.
1942K Had closed enemy position 12 miles. Stopped and searched
by sound as well as by radar and eye. Not contacting
anything at 2000K withdrew northwest due to proximity
to land and poor visibility to southeast and presence
of planes which might contact this vessel. Believe the
searchlight was on land near air base at Kavieng. The
surface signal light may have been on land. In ap-
proaching as GROWLER did, with planes definitely pres-
ent, the risk of being spotted and attacked from the
air was accepted and believed justified especially
since valuable targets were due to transit the area on
this date. Continued patrolling north and west of
Kavieng.

Nov 24, 1942.- Patrolling northwest of Kavieng.
1755K Sighted 2 large planes over Kavieng on various courses.
Planes #8 and 9.
1840K Before surfacing, searched by SD radar, but picked up
nothing. Could see lights of two planes over Kavieng.
Surfaced northwest of Kavieng.
1857K Radar picked up plane at 5 miles approaching. Moon
1914K up by this time so submerged immediately due to excel-
lent visibility. Could see lights of only one plane
-3-
ENCLOSURE (A)

— page 52 —
SECRET
now. Do not believe planes had sighted us but did
not desire to take any chances. Proceeded north and
at 1948K surfaced. Lights both planes visible as well
as searchlight at Kavieng. Radar gave no indication
of planes. Proceeded easterly headed into Moon until
25 miles from Kavieng, then headed north 20 miles and
then westward to regain Truk route.

Nov 25, 1942 - Started submerged patrol 22 miles northwest of
0728K North Cape at daylight, proceeding south.
Sighted large plane over Kavieng on various courses.
In sight until 0815K Plane #10.
1121K Sighted destroyer bearing 170 T, angle on bow 65°stbd
(course 285T), range 7 mis. Started approach. Contact
#1.
1148K Discontinued approach with enemy bearing 355 rel (265T)
angle on bow 150° stbd, spd 20 kts, range 5000 yds.
Target appeared to be DD of AMAGIRI class. Base course
estimated 315 T.
1932K Rec'd Message Nr. 63 increasing area limits and direct-
ing GROWLER depart area on Dec 3, 1942. Routing GROWLER.

Nov 26, 1942 - Started submerged patrol northwest of North Cape
at daylight proceeding south.
0632K Sighted Maru and one escort vessel bearing 197 T, range
16000 yds. Started approach. Target on zigzag course
escort vessel about one mile ahead of it. Contact #2
and #3. At range of 2100 yds, Maru zigged left 50°, giv-
ing unfavorable track of 145 and run of torpedo of 3000
yds. Due to fairly calm sea decided torpedoes would be
sighted and avoided, so did not fire. Zig was not due
to sighting this vessel. Target made radical zigs all
during approach. Identified as YAMAZUKI MARU, 6840 tons.
page 76.
1901K Rec'd Subs nr 67 re arrival of Marus at Rabaul.
Note: Planes sighted intermittently all during the day
patrolling Kavieng to Steffen Strait.

Nov 27, 1942 0602K - Patrolling across Truk - Kavieng track.
Sighted Maru bearing 156 T, range 10 mis. This vessel
stood west out of Kavieng and then southward through
strait. Contact #4. Conducted approach tactics until
vessel stood south. No attack possible.
0718K Sighted ship bearing 154 T, range 10 mis. This vessel
also stood west out of Kavieng and then southward
through strait. Contact #5. Conducted approach un-
til vessel stood south. No attack possible.
1333K Sighted Maru and destroyer escort bearing 133 T, range
6½ miles on course 270 T. DD of Momo Class. Contact
#6 & 7.
1351K Vessel changed course to 040 T when bearing 138 T, range
5 miles. Continued to trail in hopes target would
-4-
ENCLOSURE (A)

— page 53 —
SECRET

come back, but it continued off to northeast on vari-
ous courses.
Note: planes sighted intermittently all during the day,
patrolling Kavieng to Steffen Strait.

Nov 28, 1942. 0208 to 0215K - Noted gunfire, searchlights and
possible bomb explosions at Kavieng. Believed to be
an air raid.
0820K Sighted smoke of vessel off Kavieng.
0840K Heard pinging in direction of vessel.
0850K Vessel identified as small DD on westerly course. Star-
ted approach on normal approach course.
0918K Decided vessel was patrolling and closed. Before ar-
riving in firing position, destroyer reversed course
to 070 T and stood out of range. Stood north two miles
and then east. Never contacted destroyer again.
2313K Rec'd msg nr 68 re change in return route.
Note: Planes sighted intermittently all during the
day, patrolling Kavieng to Steffen Strait.

Nov 29-30, 1942. Since all vessels had evaded us, decided to
patrol at upper limits of area.
Enemy vessels had succeeded in evasion by radical zigs
either east or west after clearing shallow areas.
Estimated chances of interception would be better by
patrolling at northern limits, playing them to pass
Tench Island to eastward.

Dec 1, 1942 - 2037K - Rec'd Subs nr 70 re important ships pas-
sing west of New Hanover. Proceeded to that point.

Dec 2, 1942. At daybreak, established submerged patrol to
cover channel between New Hanover and Tingwon Islands.
Maintained high periscope patrol. Although directed
to depart area on Dec 3, 1942, in view of the informa-
tion re traffic enroute Rabaul for next five days, de-
cided to remain west of New Hanover until sunset of
third in hopes of intercepting some vessel.

Dec 3, 1942 - Patrolling west of New Hanover.
1817K Surfaced and proceeded to northern edge of area, de-
parting area at 2 N, 150 E, at 1852K. Proceeded along
northern edge of area at three engine speed.
2215K Searchlights, anti-aircraft fire and apparent bomb
explosion at Kavieng.
2315K Same remark as above. Apparently the US Army is operat
ing on them.

Dec 4, 1942. Proceeded on surface along northern edge of area
and then down neutral lane at 154 long, enroute Brisbane.

-5-
ENCLOSURE (A)

— page 54 —
SECRET

Dec 7, 1942 - Conducted battery discharge.

Dec 8, 1942 - Casualty to #2 main engine. This engine is out
              of commission.

Dec 9, 1942 - Conducted battery discharge.

3.  WEATHER
    Excellent except for period from Nov 17-22 when there
    was a moderate storm with frequent rain.

4.  TIDAL INFORMATION
    Abnormal currents of 1.5 to 2.0 knots setting east were
    experienced during the period of storm Nov 17-22.

5.  NAVIGATIONAL AIDS
    None. Charts of the area are very poor.

6.  ENEMY VESSELS SIGHTED
    Number | Description   | Position           | Course  | Speed | Time
    -------||||-------|
    1      | DD (AMAGIRI)  | 2-27S              | Various | 20    | 1121K 11/25/42
           |               | 150-39E            |         |       |
    2      | Maru          | 2-28S              | Various | 14    | 0632K 11/26/42
           |               | 150-40E            |         |       |
    3      | Patrol Vessel | 2-28S              | Various | 14    | 0632K 11/26/42
           | #24           | 150-40E            |         |       |
    4      | Maru          | Kavieng to         | Various | --    | 0602K 11/27/42
           |               | Steffen St.        |         |       |
    5      | Maru          | Kavieng to         | Various | --    | 0718K 11/27/42
           |               | Steffen St.        |         |       |
    6      | Maru          | 2-32S              | Various | 12    | 1333K 11/27/42
           |               | 150-42E            |         |       |
    7      | DD (MOMO)     | 2-32S              | Various | 12    | 1333K 11/27/42
           |               | 150-42E            |         |       |
    8      | DD (Small)    | Kavieng & Stef-    | Various | --    | 0820K 11/28/42
           |               | fen St. to North   |         |       |
           |               | Cape.              |         |       |

7.  AIRCRAFT CONTACTS
    Number | Description         | Position           | Time
    -------|||
    1      | USN - PBY           | 17-47N, 161-40 W   | 0733X 10/23/42
    2      | USN - PBY           | 16-52N, 162-36W    | 1225X 10/23/42
    3      | Radar contact       | 1-20S, 147-10 E    | 1209K 11/20/42
    4      | Sighted-unidentified| 1-20S, 147-10E     | 1250K 11/20/42
           | (Same as #3)        |                    |
    5      | Type 97 MITSUBISHI  | 20 mis. N of Kavieng | 1015K 11/23/42
    6&7    | Unidentified        | Kavieng            | 1843K 11/23/42
    8&9    | Unidentified        | Kavieng            | 1755&2015K 11/24/42
    10     | Unidentified        | Kavieng            | 0728K and all during
           |                     |                    | day 11/25/42
    Numerous | Unidentified      | Kavieng            | During days of 11/27
           |                     |                    | to 11/28/42 inclus

-6-

ENCLOSURE (A)

— page 55 —
SECRET

8. NO ATTACKS MADE.
   Approaches were attempted on every vessel sighted. In
   only two cases could this vessel get inside a range of 6000 yds.
   In neither of these cases was firing deemed advisable.

9. ENEMY A/S MEASURES.
   Destroyers and patrol boats maintain patrol off Kavieng and
   also escort vessels proceeding from Kavieng. All patrol ves-
   sels encountered were equipped with supersonic gear. None ever
   detected this vessel.
   On November 25, the AMAGIRI type destroyer failed to detect
   this vessel by pinging search. However, the closest range was
   5000 yards.
   On November 26, we approached within 1500 yards of patrol
   boat number 24 without being detected.
   Enemy vessels of low speed use very radical and frequent
   zigs. High speed vessels also zig often, but appear to rely on
   speed as well as radical zigs.
   Plane patrols were maintained over Kavieng - Steffen Strait
   Area.

10. MINESWEEPING BY ENEMY.
    None noted.

11. MAJOR DEFECTS.
    (a) Low battery cells:
    On November 9, the individual cell voltage of two cells in
    the forward battery were low on charge, one being abnormally so.
    The abnormal cell (No. 35) was jumped out on discharge and in on
    charge at finishing rates for the next six days, but failed to
    completely respond. Cell voltage rose from 2.00 to 2.30 and
    gravity from 1.120 to 1.157. It was then jumped out permanently.
    The other cell (No. 78) continued in operation, its voltage va-
    rying 0.1 to 0.2 below average and specific gravity 10 to 50
    points below.
    On November 20, another cell (No. 47) in the forward battery
    began to fall below normal. This cell is one that has a ground
    between steel insert and element and an iron content of 0.24%
    on return from last patrol. The electrolyte was renewed prior
    to this patrol, but the ground still exists. The cell has been
    continued in operation with voltage 0.1 below average and speci-
    fic gravity 10 to 30 points below average.
    (b) Low Generator (Main) Insulation Readings:
    On return from the second patrol the insulation readings
    on main generator armature and series fields were as follows:
    #1 - 1.5 meg., #2 - 1.0 meg., #3 - 0.3 meg., #4 - .5 meg.
    During the refit period all generators were cleaned by the
    Submarine Base, Pearl Harbor, and readings obtained as follows:
    #1 - 2.5 meg., #2 - 2.0 meg., #3 - .6 meg., #4 - 2.5 meg.
    The reading on #3 generator was not considered satisfactory
    but it was believed the resistance could be maintained at this
    level by careful and frequent cleaning on patrol.

-7-

— page 56 —
SECRET

The Submarine Base tested carbon tetrachloride and standard
oil cleaning solvent and found these dissolved the insulation
varnish on the brush rigging, leads and armature. So cleaning
was finally accomplished by wiping all accessible parts with
alcohol and blowing out the coils and windings with air.
During the present patrol in spite of frequent cleaning,
readings have dropped to the following values:
#1 - 1.0 meg., #2 - 0.6 meg., #3 - 0.3 meg., #4 - 1.0 meg.
In view of low reading on #3, this generator was held in
reserve and not used during the latter third of the patrol.
The following treatment is recommended:
(a) Remove end bells.
(b) Spray, wash, and flush all accessible parts with warm
fresh water.
(c) Dry out by air and lamp banks.

(c) SJ Radar:
On October 26, SJ developed a high plate current and low
plate voltage as well as a very high uncontrollable voltage on
the regulated rectifier "A". Tested all tubes and checked equip-
ment. Found magnetron had one filament envelope broken. While
removing magnetron found the plate anode had not been inserted
into the connecting lead of the gas tube 709A. Replaced magnetron
and adjusted in proper position. Also discovered a bad connec-
tion in main control unit. Tightened all connections. Retuned
set and after arriving on station, adjusted it using islands
as targets. Obtained ranges of 32,600 yds on 4,000 ft peaks;
16,000 yards on 1,500 foot peak. However, results were not
consistent.
Later troubles consisted of:
(1) Broken bearing race in thyratron blower.
(2) Thyratron tube failed and was replaced.
(3) After about two hours of operation there is a power
supply failure which drops supply down to 50 volts or less.
This last was about 10-20 seconds, after which normal operat-
ing voltage was resumed. No cause for this has been found.

(d) QC Driver:
Found inoperative on November 17, reason not discovered. In
course of working on the driver, the JK-QC receiver amplifi-
er was put out of commission.
(e) See page 9.
12. RADIO RECEPTION.
Complete.
Last consecutive serial sent - Nr. 5.
Last consecutive serial received - Nr. 72.
The system in force in this area is considered excellent.

13. SOUND CONDITIONS AND DENSITY LAYERS.
Sound conditions varied from good to excellent.
On November 25, the destroyer making 20 knots, could not be
heard beyond a range of 3 miles.
-8-
ENCLOSURE (A)

— page 57 —
SECRET

On November 26, the Maru and the patrol vessel were heard
at a range of 4 miles.
On November 27, the Maru and destroyer could be heard at
a range of 7 to 8 miles.
No echo ranging was attempted. The QC was out of commis-
sion after November 17, 1942.
No density layers were noted.

14. HEALTH AND HABITABILITY.
Excellent.
A few members suffered from colds, but no one was incapa-
citated for duty.

15. MILES STEAMED.
Enroute to station 3517
On station 3154
From station 1825
8496

(e) Casualty to #2 Main Engine:
On December 8, two days prior to arrival at base, shortly
after increasing the load on #2 main engine from 700 KW to 800 KW
an unusual knocking was noted in this engine. The MOMM on watch
made a quick investigation and not seeing the immediate cause,
tripped the generator and stopped the engine.
After disassembly the following was found:
(1) Piston #6 lower oil wiping ring broken and chewed up.
(2) A short section of the bottom part of the piston broken
off on one side.
(3) A small section of the lower edge of the cylinder liner
broken off on the same side as the piston.
(4) Crank pin bearing badly wiped and crank journal badly
scored.
(5) Piston #14 adjacent cylinder, crank pin bearing possibl[y]
wiped.
Probable Causes:
(1) Lower oil wiping ring on piston broke. Broken piece
jammed causing piston and liner to break. These broken pie-
ces dropped down to the crank pin bearing and jammed between
the bearing and connecting rod causing the bearing to seize.
(2) Crank pin bearing seized due to broken dowel pin secur-
ing lower half of bearing allowing bearing to rotate on shaft
thus shutting off oil supply to the bearing.
This engine is due for overhaul during this refit period.
The repairs necessary cannot be accomplished while at sea.

16. FUEL EXPENDED.
Enroute station 32,747 gallons
On station 21,675 gallons
From station 18,147 gallons
-9- ENCLOSURE (A)

— page 58 —
SECRET

17. FACTORS OF ENDURANCE REMAINING.
    Torpedoes | Fuel           | Provisions | Fresh Water | Personnel
    24        | 21,470 gal.    | 30 days    | Unlimited   | 25 days
              | on hand.

18. No factor of endurance ended the patrol. Departed under
    orders. Could have remained on station at least 10 days
    longer. Fuel would then have limited endurance.

19. REMARKS. Submerged patrols were maintained at high peri-
    scope depth, with 15 to 18 feet of periscope exposed. All
    contacts were made at ranges of at least six miles. On all
    contacts the submarine was brought to or near the normal
    approach course as soon as it could be determined by change
    of bearing or immediately if angle on the bow was known.
    High speed was used to close enemy tracks. All approaches were
    conducted by periscope observation. Depths of 120 to 140 feet
    were used only when proceeding at speeds over 4 knots. No
    exposures of periscope were made at speeds over two knots
    when within 6000 yards of target or over three knots when
    attacking position. Failure to attain attacking position
    cannot be attributed to sighting.
        In only one contact was the GROWLER in a favorable
    position at the start of the approach and in that case un-
    favorable zig when almost in firing position made firing
    inadvisable.

-10-
ENCLOSURE (A)

— page 59 —
COMSOPAC FILE

A16-3/(11)
Serial 0016

S-E-C-R-E-T
SECRET

From:
To :
Subject:

SOUTH PACIFIC FORCE
OF THE UNITED STATES PACIFIC FLEET
HEADQUARTERS OF THE COMMANDER

[HANDWRITTEN: jry]
DEC 19 1942

1st Endorsement on
Comtaskfor FORTY-TWO
Secret ltr. Serial 00134
of December 11, 1942.

The Commander South Pacific Area and South
Pacific Force.
The Commander-in-Chief, United States Fleet.

U.S.S. GROWLER, Third War Patrol - Comments
on.

1. Forwarded. Through no fault of anybody
connected with the patrol and in spite of a thorough
covering of the area, the results were disappointing.

Copies to:
VONO
Cincpac
Cinclant
Comsowespac
Comsubpac
Comsublant
Comsubsowespac
CTF 42
Comsubron 8
Comsubdiv 81
C.O. U.S.S. GROWLER

[SIGNATURE: W. F. HALSEY]

— page 60 —
TF42/A16-3
Serial 00134

[STAMP: SECRET]

From:
To :
Via :
Subject:
Enclosure:

1.
2.
period of 49 days, of which 31 days were spent on station dur-
ing which time the area was thoroughly covered. Only 8 vessels
were sighted and none of these contacts could be developed.

3.
#2 main engine will have to be replaced. Material refit will
be accomplished by the U.S.S. FULTON.

DISTRIBUTION:
VCNO,
Cincpac,
Cinclant,
Comsowespac,
Comsublant,
Comsubpac,
Comsubsowespac,
Comsubrons 8 & 10,
Each SS of TF42 (not to be taken to sea - BURN),
CTF42 Patrol Summary File,
Comsubdiv 81,
CO GROWLER file. dn
TASK FORCE FORTY-TWO
Care of Fleet Post Office,
San Francisco, California,
December 11, 1942.

The Commander Task Force Forty-two.
The Commander in Chief, United States Fleet.
The Commander South Pacific Force.

U.S.S. GROWLER, Third War Patrol - Comments on.

(A) Copy of Subject Patrol Report.

Enclosure (A) is forwarded herewith.

The third war patrol of the GROWLER covered a

Investigation indicates that the crankshaft of

R. W. CHRISTIE.

— page 62 —
Reg. No. [HANDWRITTEN: 2.372]
[STAMP: 3 01171]
R.S. No. [HANDWRITTEN: 3]

COMMANDER IN CHIEF
U.S. FLEET
RECEIVED

[STAMP: DECLASSIFIED]
[STAMP: CONFIDENTIAL]

1943 MAR 16 15 25

U.S.S. GROWLER

FOURTH WAR PATROL

NOT TO BE TAKEN TO SEA (Burn)

DECLASSIFIED ART. 0445, OPNAVINST 5510.1C
BY [HANDWRITTEN: OP-09B9C] DATE [HANDWRITTEN: 5/30/72]

[STAMP: DECLASSIFIED]

[HANDWRITTEN: 47423]
[STAMP: FILMED]

[HANDWRITTEN: ①]

— page 63 —
SS215/A16-3
Serial 0153
C-O-N-F-I-D-E-N-T-I-A-L

From: The Commanding Officer.
To : The Commander Task Group 42.1.

Subject: Fourth War Patrol, U.S.S. GROWLER - Report of.

Reference: (a) Pacflt Conf. Ltr. No. 12-42.

Enclosure: (A) Subject Report.

1. In accordance with reference (a), enclosure (A)
is forwarded herewith.

U.S.S. GROWLER
Care of Fleet Post Office,
San Francisco, California,
February 17, 1943.

A. F. SCHADE.

[HANDWRITTEN: (5)]

— page 64 —
ENCLOSURE (A)

CONFIDENTIAL

U.S.S. GROWLER - REPORT OF FOURTH WAR PATROL - PERIOD FROM
JANUARY 1, 1943 TO FEBRUARY 17, 1943. AREA
OPERATION ORDER NUMBER S66-42.

PROLOGUE:
        Arrived Brisbane, Queensland on December 10, 1942
from Third War Patrol. Commenced refit on December 11, 1942
by U.S.S. FULTON personnel. Completed refit on December 31,
1942. Number 2 Main Engine lifted and crankshaft renewed.
Soundings taken and ship was wiped. Readiness for sea Janu-
ary 1, 1943. Given training period of one day enroute to
station.

1. NARRATIVE:

January 1, 1943.
1500 (L) Departed Brisbane, Queensland under escort of U.S.
        S. MUGFORD. Upon clearing 100 fathom curve made
        trim dive. Conducted night approaches on escort.
        Used SJ Radar data only. All approaches were
        successful as far as obtaining accurate estimate
        of target course and speed. Maximum range obtain-
        ed was 8000 yards.

January 2, 1943.
0700 (K) Started sound runs for MUGFORD, also training own
        sound men.
1000 (K) Made deep dive.
1200 to Conducted periscope approaches and one evasion
1530 (K) after firing.
1600 (K) MUGFORD departed. Proceeded enroute patrol station.
        Conducted daily drills and dives enroute.
        Encountered heavy to moderate seas until January
        10, 1943. Slowed to one engine speed on account
        of pounding.

January 6, 1943.
        Started running submerged during daylight due to
        reported enemy submarine positions.

January 9, 1943.
0051 (K) While proceeding on surface at 15 knots, observed
        flare in water 200 yards on port beam. Radar had
        picked up no plane and none was heard. O.O.D.
        dived. Could hear nothing by sound. Plane #1.
0121 (K) Surfaced.
0124 (K) Sighted signal lights of three vessels. One bore
        213°T, others bore 080°T and 085°T. Estimated
        ranges 7 miles. Contacts 1, 2, and 3. Started

- 1 -
[HANDWRITTEN: 6]

— page 65 —
CONFIDENTIAL

0127 (K) closing ship to west to investigate when at
A flare burst directly overhead. Radar had fail-
ed to pick up any plane, again none was heard.
Plane #2. Immediately cleared bridge. About 5
seconds after flare opened and explosion was
heard both on the bridge and inside the ship.
Intensity of explosion appeared to be about that
of a 5" or 6" projectile. No bomb or projectile
was heard in flight nor was any flash or splash
noted. Submerged. Heard nothing by sound.
Since planes seemed definitely present decided
to stay submerged and retire from this area (was
east of LAE).
0300 (K) Nothing in sight.
0338 (K) Sighted flare bearing 243°T, distance 5 to 7
miles. Definitely a plane flare. Plane #3.
Assumed enemy was still searching for us. Contin-
ued on surface. Nothing on radar.

January 11, 1943.
0021 (K) Entered western edge of patrol area. Latest in-
formation indicates enemy follows coast of NEW
IRELAND down to latitude 3°25' South. Establish-
ed patrol 2-3 miles off coast of NEW IRELAND.
Surfaced and patrolled across estimated tracks
to RABAUL, proceeding to point midway in channel
between CAPE WATUI and DUKE OF YORK ISLAND to
intercept reported Maru due January 12, 1943
forenoon.

January 12, 1943.
After submerging and obtaining fix, found this
vessel was about 10 miles east of desired posi-
tion. Proceeded west at five knots.
0550 (K) Sighted masts of steamer bearing 337°T, course
155°T, range 8-9 miles. Started approach.
Steamer was making radical zigs. Contact #4.
At range of 12000 yards, steamer bearing 335°T,
changed course to 240°T (angle on bow 85° port).
In spite of closing at high speeds, never got
the angle less than 60° and at
0625 (K) Maru (7000 tons, similar to NAGARA MARU - page
79) passed ahead at range of 5000 yards.
While approaching this Maru at 0623 sighted an-
other Maru bearing 210°T, base course 310°T,
range at least 8 miles, on a track west of track
of Maru being approached. Never had any chance
of closing this vessel. Contact #5. Also pick-
ed up pinging at 0625 to southward.
0647 (K) Sighted two patrol boats, one bearing southeast,
other southwest, range about 8000 yards, both
pinging and on courses north. Contacts #6 and #7.

- 2 -
[HANDWRITTEN: ④]

— page 66 —
CONFIDENTIAL
Remained at periscope depth and evaded them. They
steamed on various courses and it took approximate-
ly two hours to shake them. Went between the two
two pingers to
on a southerly course. Picked up two pingers to
south but could see nothing. Decided we were run-
ning into a whole fleet of patrol vessels. Dur-
ing evasive tactics GROWLER was within 1000 yards
of one patrol vessel for at least 10 minutes with-
out detection. After shaking patrol boats, pro-
ceeded to regain RABAUL tracks. Two vessels ob-
served indicates tracks come through 3°-50' South
to 4°-00' South on longitude 152° East. Base
courses are 300° - 315° and reverse. Patrol boats
apparently patrol straits between CAPE WATUI and
DUKE OF YORK ISLAND up to latitude 3°-55' South.

January 13, 1943.
0153 (K) Patrolling across estimated tracks.
Sighted lights of vessel bearing 270°T, range 12000
yards. Vessel probably had just cleared rain
squall. Probabilities, however, were considered
as follows:
(a) Hospital ship,
(b) Q-ship,
(c) Ships making a rendezvous and turning on lights
(Considered very improbable).
Went ahead on 3 engines, drew well ahead and closed
target course. At 6000 yards radar range, the ship
was identified as a hospital ship. Withdrew keep-
ing stern at vessel. Contact #8.
2129 (K) Established submerged patrol about position latitude
3°-55' South, longitude 152° East.
Sighted lights of vessel bearing 150°T, range 12
miles, course 310°T. Closed enough to identify as
hospital ship then retired. Contact #9.

January 14, 1943.
0900 (K) Established patrol at position 3°-55' South, 152°-
05' East.
Sighted vessel bearing 258°T, range 7 miles, zig-
zagging on estimated base course 105°T. Started
approach at 7000 yards, bearing 228°T, estimated
speed 15 knots, target changed course to 140°T
(angle on bow 90° port) and ran to southward zig-
zagging. Was never able to close nearer than
5000 yards. Escorted by patrol boat. Contacts #10
and #11.
Identified target as similar to LONGO MARU, 8500
tons, page 47.
Decided to move further west as the incoming ships
change to their southerly leg before we can get
near them.
1358 (K) Sighted tanker and patrol boat bearing 305°T, range

- 3 -
[HANDWRITTEN: ⑧]

— page 67 —
CONFIDENTIAL
5 miles, zigzagging on estimated base course of
130°T. This target was making very radical zigs,
courses varying from 070°T to 250°T. At 3000
yards target zigged from 20° starboard to 40°
port angle on bow across the GROWLER'S stern.
Did not care to fire stern shot at over 2000 yards
range, so swung hard for a bow shot. By the time
GROWLER was around track and gyro angle were un-
favorable as well as range. Contacts #12 and #13.
Identified tanker as similar to HOYO MARU, 8650
tons, page 269.
Every target has used very radical zigs. Decided
to move out farther where they may be less radical
in course changes. Decided to establish patrol in
GAZELLE CHANNEL tomorrow.

January 15, 1943.
Proceeding along estimated RABAUL tracks toward
GAZELLE CHANNEL.
0515 (K) Sighted steamer bearing 167°T, course 310°T, range
about 6 miles. Started approach. As it got light
steamer was recognized as similar to catcher type
patrol boat, about 150 feet long. Broke off ap-
proach. Contact #14.
0707 (K) Sighted another ship similar to catcher type patrol
boat bearing 092°T, course 310°T, range 6 miles.
Approximate to 2000 yards. Positively identified
as patrol craft carrying depth charges, about 225
feet in length. Contact #15.
Continued patrol in GAZELLE CHANNEL. Will return
to vicinity of WATOM ISLAND on surfacing in hopes
of intercepting two transports reported to another
submarine in case they proceed to RABAUL instead
of LAE.

January 16, 1943.
Proceeded to northwest of WATOM ISLAND during
night. Established submerged patrol 6 miles from
that island.
0845 (K) Sighted convoy bearing 101°T, distant 10 miles,
zigzag course to west. Convoy consisted as later
determined of eight (8) Marus escorted by two
patrol boats and one (1) ASASHIO class destroyer.
Contacts #16 to #26. Convoy was in two loose
columns about 500 yards apart with one patrol boat
to north and DD and one patrol boat to south.
Made approach so as to fire at northern column
if possible. Got inside of northern patrol boat
and was in good firing position on northern
column at 2000 yards range when whole convoy zig-

- 4 -
[HANDWRITTEN: (9)]

— page 68 —
CONFIDENTIAL

1005 ged at GROWLER giving us no other alternative than
     to fire stern shot at southern column. Planned to
     swing and try to get bow shots in at after ships.
     Fired two torpedoes at leading ship southern col-
     umn, range 800 yards, 100° port track, speed 10
     knots, estimated draft 12', torpedoes were set at
     6 feet. Both torpedoes hit. Ship took heavy list
     to port and trimmed down heavily by the stern.
     Ship similar to BRISBANE MARU type, page 100.
     At this GROWLER was in unfortunate predicament of
     being about 400 yards from the DD. Swung hard to-
     ward formation and DD and had to go deep.
1007 (K) DD dropped three depth charges which appeared to
     be no closer than 100-200 yards on starboard side.
     GROWLER cut back through formation which was
     evidently scattering.
1015 (K) to (10) more depth charges, none closer than 300-
1020 (K) 500 yards.
1020 to DD and one patrol boat trailing. Finally eluded
1045 (K) and came to periscope depth, when two planes were
     observed searching at about 500 feet elevation,
     range 2 miles. Went to 150 feet since there was
     no chance of any more attacks on convoy.
     Plane Contacts 4 and 5.
     Came to periscope depth at various times but did
     not expose much periscope as planes were still
     searching.
1214 (K) On coming to periscope depth diving officer let
     boat rise about 6' higher than ordered. Plane was
     observed at about 1000 yards diving on this vessel.
     Went deep. He let go two bombs, neither of which
     were close.
1238 (K) Pinging picked up from three patrol boats, one
     bearing 190°T, two bearing 330° and 340°T. Came to
     periscope depth. Saw planes but no patrol boats.
     Finally evaded them by proceeding north.
     Evidently the Japs put several additional patrol
     boats in area as they were heard pinging continuous-
     ly all afternoon but none ever got within 8 miles
     of the submarine until
1710 (K) Sighted patrol boat bearing 100°T range 8000 yards,
     on various courses to northwest. Remaining in
     sight until 1935. Contact #27.
1935 (K) Surfaced bright moonlight with excellent visibility.
     SD radar out of commission due to cracked tubes.
     All spares cracked.
     Pinging of patrol boats still heard. No vessel of
     any kind in sight.
2230 (K) Planes dropped two flares bearing 090°T. Both
     flares dropped this side of horizon estimated range
     4 miles. Plane contact #6. Retired to west plan-

- 5 -
[HANDWRITTEN: (10)]

— page 69 —
CONFIDENTIAL
ning to stay on estimated RABAUL tracks at western
edge of our area.
2310 (K) Plenes still searching. Two more flares bearing
090°T, range 7 miles. Plane Contact #7.

January 17, 1943.
0008 (K) Plenes still searching. Four flares dropped bear-
ing 130°T, range 8-10 miles. Plane Contact #8.
Started submerged patrol at western edge of area
on estimated RABAUL track.
0915 (K) Sighted patrol boat bearing 134°T, range 4 miles,
on course 305°T. Remained at least 3000 yards
away from him. Contact #28.
1015 (K) Patrol boat reversed course to 095°T and continued
to eastward. Apparently enemy is searching whole
area for GROWLER.
On surfacing proceeded at 3 to 5 knots toward point
10 miles north of CAPE LAMBERT LIGHT where it is
intended to establish patrol tomorrow.
Received message regarding shift of areas for this
vessel at sunset January 19, 1943.

January 18, 1943.
0500 (K) Started submerged patrol with CAPE LAMBERT LIGHT
bearing 225°T, distant 14 miles, patrolling north
and south. Plan to move northward at noon.
1157 (K) Sighted smoke bearing 264°T, range 15 miles. Bear-
ing remained steady until
1242 (K) It drew to left. Came to normal approach.
1257 (K) Made out target to be Maru with destroyer escort.
Contacts #29 and #30. Continued approach. Target
later plotted on base course of 035°T. Ran on
normal approach or normal course all during
approach at high speeds but never could keep
from drawing ahead until at
1355 (K) With target bearing 350°T, course 050°T, range 7000
yards had to give up attack.
Target similar to KOZAN MARU, 4180 tons, page 127.
Destroyer was of ASASHIO class. Their track plot-
ted as headed for KALILI HARBOR, NEW IRELAND.
Continued patrolling in same area.

January 19, 1943.
Decided to patrol off coast of NEW IRELAND.
Later on receipt of message regarding 4000 ton AK
with submarine chaser escort, changed course to
head for CAPE WATUI in hopes of intercepting this
Maru there at daybreak.
During night, experienced an unaccountable set to
north. Was 12 miles north of position desired when

- 6 -

— page 70 —
CONFIDENTIAL
first fix was obtained. Headed south: Made little
headway except at 3 to 4 knots.
0540 (K) Sighted patrol boat bearing 291°T, course 130°T,
range 8000 yards. Slowed and evaded. Contact #31.
0730 (K) Poor visibility set in and continued remainder of
day. On surfacing proceeded along southwest coast
of NEW IRELAND to new assigned area.

January 20, 1943.
0100 (K) Entered new assigned area 15 miles south of DYAUL
ISLAND and proceeded toward point at 2°-50' South,
149°-25' East, where much traffic has been reported.
Established submerged patrol at above point.

January 21, 1943.
Established patrol in channel between TINGWON GROUP
and NEW HANOVER.

January 22, 1943.
Established patrol at 2°-20' South, 149°25' East
guarding approaches from northward toward RABAUL
along lane where heavy traffic has been reported. By
order of Task Group Commander, was directed to re-
main north of 3°-00 S this date.
1025 (K) Sighted enemy hospital ship. Contact #32.
On surfacing proceeded to route between 00°-20' Nort
152°-10' East and STEFFEN STRAIT to intercept convoy
as directed. Planned to get on that route and steam
northward, retiring so as to be at enemys daylight
plus one hour position circle.
Heavy rains during night caused change of plan so
took position 50 miles from STEFFEN STRAIT on enemy'
assumed track.

January 23, 1943.
Established patrol 55 miles from STEFFEN STRAIT
which bore 205°T.
1005 (K) Having sighted nothing and fearing wide sweep of
convoy, surfaced and proceeded on 4 engines toward
STEFFEN STRAIT in hopes of still intercepting.
1128 (K) Submerged at a point 20 miles from STEFFEN STRAIT
(13 miles from NORTH HEAD) and continued submerged
patrol.
1200 to Three bombers sighted patrolling over KAVIENG. Plan
1900 (K) Contact #9. On surfacing retired to westward in cas
new instructions should order return to previous
area. On receipt of new orders to disregard area
limits and patrol north of latitude 2°-30' South de-
cided to patrol areas as follows, one day each:
(a) To west of 149° East.
(b) Between EMIRAU ISLAND and TENCH ISLAND.

- 7 -
[HANDWRITTEN: (11)]

— page 71 —
CONFIDENTIAL
(c) To east of TENCH ISLAND.
(d) To northeast of KAVIENG.

January 24, 1943.
Started submerged patrol at 2°-20' South, 149°-00'
East. Overcast decreased to less than 50% so de-
cided, although SD radar is out of commission, to
scout on surface so as to cover more area. So at
0944 (K) Surfaced. But at
1002 (K) Heard planes. Could see nothing but before div-
ing saw 6 planes coming through the clouds, dead
ahead bearing 290°T, altitude 4000 feet, course
110°T. They were single wing planes marked with
JAPANESE insignia. Only obtained a glance at
them. Plane Contact #10.
This vessel was in the sun and apparently was not
seen. Submerged and remained so in case of plane
search.

January 25, 1943.
Established patrol in channel between EMIRAU
ISLAND and TENCH ISLAND.

January 26, 1943.
Established patrol in latitude 1°-30' South, three
to fifteen miles east of north south line through
TENCH ISLAND.
1501 (K) Sighted smoke bearing 165°T, range 15 to 20 miles.
Bearing drew eastward so ran on normal approach
course in that direction. Apparently target then
changed base course because bearing drew to west-
ward. Reversed to new normal approach course and
ran at high speed in that direction. After run-
ning westerly for five miles target was still 5000
yards away with angle on bow of 90° starboard so at
1704 (K) Paralleled target whose base course was 330°T, in-
tending to chase at dusk.
Target similar to MIKAGE MARU #18, 4319 tons, page
119. Protected by one patrol boat sighted and by
another heard pinging, but never sighted. Con-
tacts #33 and #34.
1850 (K) Surfaced and proceeded on such course so as to
pass target to westward at minimum range of 5
miles.
2030 (K) Relocated target bearing 355°T, range 7 miles,
course estimated about 330°T. Remained outside of
5 miles to westward, intending to obtain position
6 miles ahead.
2245 (K) With target bearing 130°T, angle on bow 20° (dis-
tance to track 4500 yards), range 13000 yards, se-

- 8 -
[HANDWRITTEN: (12)]

— page 72 —
CONFIDENTIAL
cured all engines and flooded down to decks awash,
closing track at 4 to 6 knots. Moon had risen by
this time but was partially obscured by clouds.
Visibility to eastward and southeast was poor on
account of cloud shadows.
2256 (K) Target changed course to 075⁰ to 090⁰T and speeded
up as indicated by bow wave.
2300 (K) About this time sighted one patrol boat headed for
this vessel. Blew all tanks and went ahead at 19
knots to northeast, intending to intercept target.
Manned gun.
2311 (K) Both patrol boats commenced firing at this vessel.
They were against clouds and could only be seen by
flashes of gun. Did not reply. When projectiles
started to land within 50 yards, turned north.
Patrol boats maintained position and continued to
fire, staying between GROWLER and target, forcing
us to northwestward. Never could see patrol boats
except by flashes of their guns. They continued
chase until

January 27, 1943.
0030 (K) Keeping up intermittent fire.
0200 (K) Proceeded southeast.
Had planned to patrol north of NORTH CAPE but since
it was too distant, returned to vicinity of TENCH
ISLAND and established submerged patrol 3-15 miles
to eastward of north south line through that island.
On surfacing proceeded to point fifteen miles of
NORTH CAPE.

January 28, 1943.
Established submerged patrol fifteen miles north of
NORTH CAPE, patrolling line southeast-northwest ten
miles in length, guarding any traffic to or from
northeast and east to KAVIENG and STEFFEN.
1215 (K) Sighted ship masts bearing 212⁰T, range 15 miles,
estimated course 105⁰T. Came to normal approach
course. Heard pinging shortly after sighting ship,
bearing in same direction.
1228 (K) Sighted float type biplane, type 95, patrolling over
ship. Contacts #35 and #36. Plane Contact #11.
Ship was later identified as a 10000 ton tanker on
base course 090⁰T, speed 12 knots. This vessel was
10 miles from base track and best we could do was to
close to range of 5 miles. Tracked ship to east
until
1430 (K) When it was lost.
The tanker was either running down the northeast
coast of NEW IRELAND to RABAUL or proceeding to TRUK
and making a wide sweep around this submarine's

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— page 73 —
CONFIDENTIAL
sighted position on night of 26-27 January.
2110 (K) In accordance with message received from Task Group
Commander proceeded at four engine speed toward
point at latitude 1°-20' South, longitude 146°-20'
East to intercept convoy. Our present position
precluded reaching WEWAK or the track of the convoy
between its last reported position and that port.

January 29, 1943.
Proceeding toward intercept point for convoy.
Altered course to intercept convoy track at its
1000, 10 knot position circle on track from position
4°-30' North, 140°-40' East to passage between TONG
and PAK ISLANDS. This was also his 1330 estimated
position if he passed TONG at sunset.
1215 (K) On estimated convoy track, scouting to northwest on
surface.
1413 (K) Sighted unidentified plane bearing 300°T, headed on
northerly course, range 8-10 miles. Plane Contact
#12. As sky was 60% overcast and when we lost
plane, just in case he had sighted us or was search-
ing for us, decided to submerge.
1417 (K) Never could sight plane by periscope so at
Surfaced and continued scouting to northeast.
1550 (K) From probable track of convoy and track of this
vessel it is estimated he would have been sighted
at any time from 1100(K) to sunset if he had used
the TONG - PAK passage.
Received Task Group Commander message regarding new
area assignment 00°-30' to 02°-30' South, 143°-00'
to 150°-00' East.
Proceeded to position 1°-00' South, 149°-00' East
to cover tracks from PALAU - RABAUL and TRUK -
RABAUL via western end of NEW HANOVER.

January 30, 1943.
Patrolling on surface area 50 by 10 miles, middle
eastern point of area being 25 miles west of CAPE
FORSTER, MUSSAU ISLAND.
1747 (K) Sighted vessel bearing 355°T, estimated range 15
miles. When tops were well over horizon submerged.
Sunset was at 1824. Contact #37. Obtained base
course of 150°T, speed 14 knots and identified ves-
sel as cargo steamer similar to KOGYO MARU, 6500
tons, page 75.
1850 (K) At range of 2000 yards target zigged from a 90 to
130 starboard track. By this time it was very dark
through periscope for range taking. Due to goal
post on the target, angles were considered accurate.
Swung left for small track and at

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— page 74 —
CONFIDENTIAL
1852 (K) Fired 3 torpedoes on tracks of 115° to 120° star-
          board, range 2000 yards, target course 140°T, speed
          14 knots, 1° spread because of large track and
          range. All missed. Target opened with gun fire
          immediately apparently to eastward. At first it
          was estimated target turned away but at 1854 his
          bow wave was seen. Had been swinging toward target
          for 180° track shot. Now got set up for 35° track,
          range 2000 yards, and at
1855 (K) Fired one torpedo which hit at bow at 1856-10.
1858 (K) Three depth charges were dropped, none close. No
          patrol vessel had been sighted nor had any been
          picked up by sound. However the turn counts on the
          target had been 240 rpm. No charge explosions were
          noted near target vessel although it was believed
          he was throwing them. Poor visibility precluded
          efficient search, however; went deep.
1900 (K) Two more charges were dropped, not close. Sound
          head in use raised and target was lost. Finally got
          a bearing of north drawing east.
1930 (K) Could sight nothing by periscope but did not desire
          to surface under his guns.
1943 (K) Surfaced. Conducted search at high speed toward
          CAPE FORSTER of MUSSAU ISLAND, using radar. Visi-
          bility poor due to overcast.
          Could not contact target to east and southeast so
          proceeded north of MUSSAU ISLAND believing target
          may have proceeded to KAVIENG to repair damaged bow.
          Based search on estimated speed of 10 knots for
          target, range 8 miles bearing northeast at time of
          surfacing, courses 135°T or 090°T. Continued search
          until 2400.

January 31, 1943.
0000 (K) Proceeded toward HERMIT ISLAND to establish patrol
          in hope of intercepting important MARU proceeding
          from TRUK and due at WEWAK forenoon of February 1.
1530 (K) Sighted smoke. bearing 071°T, range 15 miles, bear-
          ing drawing south. Ran on surface until tops were
          seen.
1600 (K) Submerged. Target bearing 060°T, on course 225°T,
          range 20000 yards. Contact #38.
          Target turned out to be converted patrol or gun
          boat. It was about 225 feet long, with goal post
          mast forward, tripod mast aft, carrying depth charges
          and having a gun estimated at 3" caliber, estimated
          2500 tons.
1700 (K) Fired one torpedo at range 800 yards on 100° star-
          board track, estimated draft 10 feet, torpedo depth
          set at 0 feet. Saw torpedo run under target and ob-
          served crew members watch it run under their ship.
          Vessel immediately swung at submarine. We went

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— page 75 —
CONFIDENTIAL
ahead and went deep. Patrol vessel dropped two
depth charges, neither close and then apparent-
ly proceeded.
1722 (K) Came to periscope depth and located target to
southwest, range 6 miles, searching on various
courses. On surfacing proceeded to northwest
to patrol western part of area in hope of inter-
cepting WEWAK traffic. On receipt of message
to patrol between MANUS and MUSSAU ISLANDS and
toward RABAUL reversed course and proceeded east-
ward at high speed.

February 1, 1943.
Proceeding eastward to patrol between MANUS and
MUSSAU ISLANDS.
0558 (K) Sighted smoke bearing 150°T, range 12 miles,
drawing south. Contact #39.
As it got lighter to eastward saw tops of steam-
er on course 310°T.
0608 (K) Submerged on normal approach course 240°T.
0642 (K) Lost vessel in rain squall. Bearing had drawn to
152°T so continued on 240°T.
0724 (K) Not having recontacted vessel, surfaced. It
could not have passed to the northward of us so
assumed he had taken course to WEWAK. Searched
at high speed to southwest, covering speeds 10
to 13 knots. Never recontacted him. If he were
making 15 knots it would have been an all day
chase.
1000 (K) Changed course to northeast and continued at
high speed to gain station between MANUS and
MUSSAU ISLAND.
2025 (K) Sighted hospital ship bearing 065°T, range 10
miles on northwest course. Contact #40.

February 2, 1943.
Established surface patrol at 2° South, 149° East,
patrolling on southeast and southwesterly courses
along 160° track to RABAUL.
Proceeded toward RABAUL after dark, intending to
patrol submerged on February 3, 1943 and to in-
vestigate around WATOM ISLAND (as directed on Feb-
ruary 4, 1943.)

February 3, 1943.
Established submerged patrol at latitude 4° South
and longitude 152° East.
On inspecting #2 main engine discovered broken
liner. While it would run it was feared a casualty
such as happened on previous patrol might occur,
ruining the crankshaft and putting engine completely
out of commission.

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— page 76 —
CONFIDENTIAL
Decided to renew liner and put engine in full
commission before closing RABAUL. Closed STEFFEN
STRAIT on surfacing.
Received message regarding two Marus due at
STEFFEN. Estimated they would clear the strait
about sunset February 4, 1943.

February 4, 1943.
Established patrol south of STEFFEN STRAIT.
0700 (K) Sighted single motor monoplane, float type which
patrolled on east and west courses 3-4 miles
south of strait. Plane Contact #13. Patrol main-
tained all day. Patrolled about 5 miles from
strait.
1734 (K) Sighted smoke of two ships in STEFFEN STRAIT.
Headed toward straits.
1800 (K) Ships, with two patrol boats, cleared STEFFEN
and changed course 095°T, heading for GAZELLE
CHANNEL. Contacts # 41 to 44 inclusive.
Trailed in case they swing south. They continued
easterly. Estimated speed of targets at 10
knots. On surfacing proceeded at high speed south
of DYAUL ISLAND to intercept their estimated
tract at their 0200 position circle, arriving
there about 0115.

February 5, 1943.
0120 (K) Arrived at enemy's 0200 position circle. Started
searching to north and northwest.
0215 (K) Picked up two ships on sound, bearing 035°T,
bearing drawn right. Heard no pinging.
Visibility was very poor, sky overcast.
Assumed enemy's course 135°T and headed on course
110°T to 125°T at high speed to close and also
draw ahead.
Finally picked up ships by radar and obtained a
range of 8500 yards. Tracked by radar and ob-
tained course of 125°T, speed 10 knots. Obtained
position 7000 yards on starboard bow, 1500 yards
from track, leading ship bearing 317°T.
Visibility still poor. Decided on radar attack
as we could not make out anything with binoculars
Periscope attack out of the question. Sound has
not been consistent. Headed at enemy to reduce
silhouette, going at slow speed or stopped. Sound
could hear nothing but two heavy ships. At 6000
yards radar range ships were faintly visible as
blobs but it was impossible to estimate any
course. This vessel was in a sector of poor
visibility for the enemy also.

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— page 77 —
CONFIDENTIAL
0359 (K) At 5000yards range leading ship opened fire
            with forward gun. Submerged immediately,
            prepared to conduct approach by sound.
            Immediately hear high speed screws. Could
            see nothing by periscope. Screws on either
            bow.
0401 (K)
0402 (K) Depth charge attack started. We could not be
            certain whether both patrol boats were dropping
            charges or not. There were four very loud
            explosions before 0403. Went deep.
            Thereafter patrol boats would alternately
            stop and then proceed. Heavy ships speeded
            up and proceeded easterly from draw of bear-
            ings.
0413 (K) Second depth charge attack by both vessels.
            Four depth charges.
            Forward torpedo room reported gasket of
            #1 M.B.T. partially blown out. Patrol boats
            still trailing until
0439 (K) Believed we had avoided their immediate vic-
            inity and that they were not certain of our
            location.
0450 (K) Pinging of patrol boats now estimated at 3
            miles and definitely searching.
            Leak in forward room increasing. Standing by
            to put a pressure on that room.
0535 (K) Came to periscope depth as it was light
            enough to see. One patrol boat 5-6 miles,
            bearing 128°T, smoke of two ships bearing
            140°T range 15 miles.
            Closed vents and flood valves to #1 M.B.T.
            but since the vent opens with sea pressure
            (seats with tank pressure) could not relieve
            the pressure on the tank. The leak grew
            steadily worse. At periscope depth, water
            entered the boat about 1000 gallons an hour.
            The drain pump was run continuously on the tor-
            pedo room bilges. An effort was made to cover
            the manhole with sheet rubber and deck plates,
            held in place by shores and two jacks. This
            at least prevented the leak from becoming
            worse. Due to the proximity of patrol boats
            searching for us could not surface. Diving
            control poor. Headed westerly. On surfacing
            after dark put forward torpedo room under 7#
            pressure, opened manhole and renewed the gas-
            ket. Made a test dive to 275 feet. Gasket
            satisfactory. Proceeded toward WAKE ISLAND.

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— page 78 —
CONFIDENTIAL
2308 (K)         Sighted hospital ship bearing 147°T. range
                 12 miles, on course 300°T. Kept Clear.
                 Contact #45.

February 6, 1943.
                 Submerged 8 miles north of WATON ISLAND,
                 searched to east and west of WATON 2
                 miles from shore. No activity, no ships
                 or patrol boats sighted.
2200 (K)         Sent radio message to Commander Task
                 Force 42 as directed and proceeded to
                 new area, speed 17 knots.

February 7, 1943.
0110 (K)         Sighted ship on starboard bow, opposite
                 course, range 2000 yards. Contact #46.
                 Turned away, made tubes ready and swung
                 around to close for attack. Visibility
                 poor. When in position with radar range
                 2000 yards, track angle 130° starboard,
                 ship sighted us and reversed course to
                 attack.
                 This apparently was not obvious to conn-
                 ing officer on the bridge, although the
                 fire control party gave accurate radar
                 ranges and had the TDC solution.
                 Range too close on TDC and by radar to
                 fire. Bridge gave order "Left full rudder"
                 and sounded the collision alarm.
0134 (K)         GROWLER hit enemy vessel head on, swinging
                 with left rudder, at 17 knots, striking him
                 halfway between his bow and bridge.
                 The impact was terrific, knocking everyone
                 down. GROWLER heeled over about 50°. The
                 enemy opened fire with several machine guns
                 (.50 cal.) at point blank range. The order
                 was given "Clear the bridge". The O.O.D.
                 and quartermaster descended followed by two
                 wounded survivors who were pulled through the
                 Conning Tower hatch. About 30 seconds
                 elapsed. No one else appeared at the hatch.
                 Sounded diving alarm, closed the hatch.
                 Submerged.
                 The Commanding Officer, assistant O.O.D. and
                 one lookout were left on the bridge. It is
                 believed they were killed by enemy gun fire
                 and washed overboard.

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— page 79 —
CONFIDENTIAL
The enemy continued spraying the bridge
with machine gun fire until it was under
water.
The Conning Tower hatch had a bullet hole
about 1/2" across, 3/4" long. No other
serious leaks observed immediately. The
water that entered the conning tower could
not be stemmed. All gyro, IC, lighting and
heater circuits flooded out. The cables to
the bridge gyro repeater, TBI's and IMC
speaker were shot away and the cables flooded
through into the ship. The conning tower was
abandoned since every effort was being
made to plug the leaks. Depth was maintained
at 150' and no attention was paid to 2 depth
charges which were not close. Lieutenant
L.L. DAVIS, U.S.N. is deserving of much credit
for cool and able handling of the ship during the
dive under extremely adverse conditions. Water
in the control room was about 6" deep and in
the pump room several feet deep, with both
drain and trim pump running continuously.
JK-9C sound gear back in commission, target not
heard.
0145 (K) Made battle surface. Nothing in sight so cleared
the area to westward. The ship attacked by
this vessel was a large converted patrol boat
about 2500 tons, described by survivors as
very similar to the ship attacked by this
vessel on 31 January. ( Page 242 - ONI 208J).
His bow was ripped wide open and it is believed
he sank. Examination of the damage sustained,
revealed the following: About 18' of the bow
is bent at right angles to port. Outer doors
to #3-4 tubes cannot be closed. About 35' of
the bow including bow buoyancy tank is crump-
led. Underwater damage to the tubes undeter-
mined. Many holes in bridge superstructure but
only bad leak is through the conning tower
hatch. This was plugged with a bolt and lead
washers. All pump room auxiliaries grounded
out. All conning tower circuits grounded out.
SJ radar flooded. Many small hydraulic and
service air leaks; #1 and #2 periscopes out
of commission. Fire broke out in #2 aux-
iliary power panel in the maneuvering room.
This was smothered. All circuits were pulled,
leaving field circuits in for the main gen-
erators. Temporary repairs were effected and

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— page 80 —
CONFIDENTIAL
ship submerged at dawn. Leaks in conning tower
still very bad, but under control. Lieutenant
Commander A.F. SCHADE assumed command.
1848 (K) Surfaced. Sent report to Commander Task Force 42
stating that the GROWLER was proceeding via the em-
ergency routing. Much of the equipment was made op-
erative including #2 periscope, 1 air compressor, 1
L.P. air compressor, refrigeration and air condition-
ing units. Leaks were effectively patched.
Surface speed reduced about 30% and diving control is
extremely difficult.

February 8, 1943.
0007 (K) Received Commander Task Force's dispatch directing
return.

2. WEATHER.
No particularly unusual weather encountered.

3. TIDAL INFORMATION.
Nothing abnormal noted.

4. NAVIGATIONAL AIDS.
None.

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— page 81 —
CONTAMINATED
S. ENEMY CONTACTS

| ITEM NO. | DESCRIPTION                 | POSITION             | COURSE              | SPEED | TIME      | DATE     |
| :------- | :| :| :| :---- | :| :------- |
| 1, 2 & 3 | Unidentified (3 patrol boats) (7000 ton) | 4-01°South 152-16°East | Various headed South | 14    | 0124 (K)  | 1/9/43   |
| 4        | Unidentified (7000 ton)     | 4-01°South 152-16°East | Various headed South | 14    | 0550 (K)  | 1/12/43  |
| 5        | Unidentified (7000 ton)     | 4-00°South 152-12°East | Various headed North | 12    | 0623 (K)  | 1/12/43  |
| 6 & 7    | Unidentified patrol vessels (100-150 ft.) | 4-02°South 152-19°East | 000°T & various     | 15    | 0647 (K)  | 1/12/43  |
| 8        | Hospital ship               | 4-02°South 152-19°East | 310°T               | 12    | 0153 (K)  | 1/13/43  |
| 9        | Hospital ship               | 3-55°South 152-05°East | 310°T               | 12    | 2129 (K)  | 1/13/43  |
| 10       | Maru (8500 ton)             | 3-55°South 152-05°East | Various headed South | 15    | 0900 (K)  | 1/14/43  |
| 11       | Patrol Boat (110 ft)        | 3-55°South 152-05°East | Various headed South | 15    | 0900 (K)  | 1/14/43  |
| 12 & 13  | Tanker (8650 Ton) Patrol Boat (110 ft) | 3-50°South 151-57°East | Various headed South | 14    | 1358 (K)  | 1/14/43  |
| 14       | Patrol Boat (Other type)    | 2-58°South 151-06°East | Various headed South | 10    | 0515 (K)  | 1/15/43  |

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— page 83 —
[STAMP: CONFIDENTIAL]
U.S.S. TULLIBEE
PATROL REPORT
[STAMP: CONFIDENTIAL]

37 | [UNCLEAR: TULLIBEE] | [UNCLEAR: 6500 tons] | 1-14°South | Various | 14 | | 1747 (I) | 1/30/43
   |                     |                     | 148-50°East | Base 150°T |    | |          |
38 | Patrol Boat         | 1500 to 2500 tons   | 1-20°South | 225°T | 10 | (K) | 1530 (I) | 1/31/43
   |                     |                     | 145-35°East |            |    | |          |
39 | [UNCLEAR: Taru]     | 315                 |             | 315°T | 12 | (K) | 0558 (I) | 2/1/43
   |                     |                     |             | Various    |    | |          |
40 | Hospital ship       |                     |             | 315°T |    | | 2035 (K) | 2/1/43
   |                     |                     |             |            |    | |          |
41 & 42 | 2 [UNCLEAR: LSTs] |                     | [UNCLEAR: 31°11'S] | 095°T | 10 | (K) | 1734 (K) | 2/4/43
   | Unidentified        |                     | [UNCLEAR: 145°30'E] |            |    | |          |
43 & 44 | 2 Patrol Boats    |                     |             | 300°T | 12 | (K) | 0215 (I) | 2/5/43
   |                     |                     |             |            |    | |          |
45 | Hospital ship       |                     |             |            |    | | 2308 (K) | 2/5/43
   |                     |                     |             |            |    | |          |
46 | Patrol Vessel       | (2500 Tons)         | 3-34°South | 100°T | 15 | (K) | 0110 (I) | 2/7/43
   |                     | Rammed and holed    | 151-09°East |            |    | |          |
   |                     | Forward.            |             |            |    | |          |

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— page 84 —
CONFIDENTIAL

6. CONTACTS - AIRCRAFT.

NO. | DESCRIPTION | POSITION | TIME
--- | --- | --- | ---
1. | Unidentified - dropped | 6-30° South | 0051 (K)
| flare. | 148-21° East | 1/9/43
2. | Same as above | 6-30° South | 0127 (K)
| | 148-20° East | 1/9/43
3. | Same as #1 | 6-25° South | 0335 (K)
| | 148-10° East | 1/9/43
4. | Jap Monoplane (Land) | 3-58° South | 1045 (K)
| (Bombed this vessel at | 151-57° East | until 1400
| 1214 (K)) | | (K) 1/16/43
5. | Jap Biplane (Land) | 3-58° South | 1045 (K)
| | 151-57° East | until 1400
| | | (K) 1/16/43
6, 7, | Plane flares. | 3-58° South | 2230 (K)
& 8. | | 151-40° East | 1/16/43
| | 3-55° South | 2310 (K)
| | 151-39° East | 1/16/43
| | 3-50° South | 0008 (K)
| | 151-38° East | 1/17/43
9. | Three bombers | Over | Various
| Unidentified | KAVIENG | times 1200
| | | to 1900 (K)
| | | 1/23/43
10. | 6 planes, single wing, | 2-23° South | 1002 (K)
| Japanese | 148-43° East | 1/24/43
11. | Float type Biplane | 2-20° South | 1228 (K)
| Type 25, 1000' Altitude | 150-47° East | 1/28/43
12. | Unidentified | 1-29° South | 1413 (K)
| | 146-37° East | 1/29/43
13. | Float type Monoplane | South of | 0700 (K)
| | STEFFEN STRAIT | 2/4/43
14. | Unidentified | 13-30° South | 0850 (K)
| | 156-10° East | 2/13/43

7. SUMMARY OF SUBMARINE ATTACKS.

| | ATTACK #1 | ATTACK #2 | ATTACK #3
--- | --- | --- | ---
1. Number of torpedoes fired. | 2 | 4 | 1
2. Firing interval. | 8" | 11", 9", 4'-10" | -
3. Point of Aim. | MOT | MOT | MOT
4. Track angles | 100 Port | 115-118-120 | 100 S
| | | 35 S |
5. Depth setting. | 0 | 10' | 0
6. Estimated Draft. | 12' | 25' | 10'
7. Torpedo performance. | NORMAL | NORMAL | Did not
| | | | explode.
8. Estimated enemy speed. | 10 kts. | 14 kts. | 10 kts.

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— page 85 —
CONFIDENTIAL

| | ATTACK #1 | ATTACK #2 | ATTACK #3 |
|---|---|---|---|
| 9. Results of attack. | 2 hits | 1 hit | --- |
| 10. Evidence of sinking. | Stern under | --- | --- |
| | water 1 hour | | |
| | later. | | |
| 11. Spread employed. | 0-2° Left | 1°R,0, | --- |
| | | 1°L,0. | |
| 12. Firing range. | 800 yds. | 2000 yds. | 800 yds. |
| 13. Gyro angles | 5R - 4R | 0-5R-9R-4R | 1R |

8. ENEMY A/S MEASURES.
All ships were escorted. RABAUL approaches are well
protected by many small A/S patrol boats. Sound gear did not
appear very effective. All vessels attacked dropped depth
charges at random. Evidence that some Marus are equipped with
Y guns. As has been experienced before, vessels sighting a
submarine, periscope or a torpedo wake open fire with guns
immediately.

9. ENEMY MINE SWEEPING OPERATIONS.
None noted.

10. MAJOR DEFECTS.
(a) Main Storage Battery - 4 bad cells in forward bat-
tery, despite treatment last upkeep, necessitating
that 8 cells be jumped out. A total of 75 cells have
low insulation readings of the jars.
(b) #3 Main Generator has an insulation reading of
300,000 ohms. This cannot be brought up in spite of
frequent cleaning.
(c) Bow and bow tubes bent and crumpled as far as
frame 10. Caused by ramming. Extent damage to tubes
unknown.
(d) Bridge and superstructure have many bullet holes.
(e) #1 Periscope jammed by bullets.
#2 Periscope elevation handle sprung, stadimeter
handle bent.
(f) Bow plane shafting sprung.
(g) Following collision and partial flooding of the
conning tower, control room and pump room all elec-
trical circuits and pump room auxiliaries were
grounded out. Electric wiring to bridge shot away.
Much of this damage has been repaired, auxiliaries
placed in operating condition and grounds cleared.

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— page 86 —
CONFIDENTIAL

(h) Following depth charge attack on deep submergence,
    the gasket to the manhole on #1 M.B.T. was partially
    blown out. Water entered the boat at about 1000 gal-
    lons an hour, requiring constant use of drain pump.
    New gasket installed at night on surface, by placing
    torpedo room under pressure.
(i) SJ radar flooded.
(j) #2 Main Engine - Broken bearing cap bolt - which
    resulted in breaking skirt of #11 liner. New unit
    installed.
(k) #2 Main Engine - Broken liner #9 cylinder. Renewed
    piston and liner.

11. RADIO RECEPTION.
    Consecutive last serial received                               53
    Consecutive last serial sent                                   140850

12. SOUND CONDITIONS.
    Variable.

13. HEALTH AND HABITABILITY.
    3 cases of measles.
    2 cases of severe gun wounds.
    With the exception of the 3 cases of measles which
    were treated as serious illnesses, health was good.

14. MILES STEAMED.
    Miles enroute station 2024
    Miles on station 4007
    Miles from station 1995

15. FUEL EXPENDED.
    Fuel enroute station 21341 gallons
    Fuel on station 32669 gallons
    Fuel from station 21650 gallons

16. FACTORS OF ENDURANCE.
    | Torpedoes | Fuel         | Provisions | Fresh Water | Pers-onne |
    ||||||
    | 17        | 18,550 gals. | 20 days    | Unlimited   | 10 days.  |
    |           | on hand.     |            |             |           |

17. Patrol was ended by material damage to the ship,
    rendering bow tubes useless, as result of collision by ramming.

- 23 -
[HANDWRITTEN: 27]

— page 87 —
CONFIDENTIAL

18. REMARKS.

On three occasions night surface attacks were at-
tempted. On the first attack the GROWLER was sighted at
radar range of 10,000 yards and immediately subject to gun-
fire. Visibility was good; our position favorable. We
should have been submerged at this time. On the second at-
tack we were sighted at range of 6000 yards when ahead of the
targets. Visibility low. They opened fire with large cali-
ber guns and the subsequent depth charge attack blew out the
gasket of #1 M.B.T. manhole forcing us to evade at periscope
depth using the drain pump continuously. The third attack
resulted in ramming, and we were very fortunate the enemy
vessel missed ramming us first. This damaged the GROWLER to
the extent the patrol was terminated. Visibility was bad,
not over 2000 yards.

It is obvious the enemy has alert lookouts and
keep their guns manned continuously. We were forced to con-
clude that in making any night approach the submarine will be
sighted even in extremely poor visibility before a favorable
firing position can be obtained while on the surface. This
leaves two alternatives:

(1) Proceed to point ahead of target, conduct sub-
merged radar and periscope approach.

(2) Track target by sound and radar outside the limits
of visibility, proceed to daylight position for
attack.

- 24 -

[HANDWRITTEN: 8]

— page 88 —
FF12-15(42)/A16-3/00-jm
Serial 057
C-O-N-F-I-D-E-N-T-I-A-L
From: The Commander Task Force FORTY-TWO
To : The Commander in Chief, UNITED STATES FLEET.
Via : The Commander Southwest Pacific Force.

TASK FORCE FORTY-TWO
Care of Fleet Post Office,
San Francisco, California.

February 18, 1943

Subject: U.S.S. GROWLER, Fourth War Patrol; comments on.
Enclosure: (A) Copy of subject patrol report.

1. Enclosure (A) is forwarded herewith.

2. GROWLER'S Fourth War Patrol covered a period of
forty-eight busy days. Leaving Brisbane January 1, 1943, she
arrived in her assigned area North of RABAUL on January 11th,
having been attacked by aircraft on the night of January 8-9,
1943 south of VITIAZ STRAIT. She had many contacts in her
first area but was able to close to attack position only once
when on January 16th, she sank with two torpedo hits during
daylight periscope attack a medium sized freighter, the leader
of an eight ship convoy heading westward from RABAUL. On Jan-
uary 20th, she was ordered to proceed westward to NEW HANOVER
To patrol the TRUK and PELEW routes to RABAUL. She damaged
another freighter with one hit out of a four-torpedo spread on
January 30th, and on the next day fired one torpedo at a gun-
boat but missed. On February 2nd, she started back to RABAUL.
When south of STEFFEN STRAIT on the night of 4-5 February, she
sighted and chased a convoy headed for RABAUL but was detect-
ed, subjected to gunfire from the convoy, and severely depth-
charged by escorts. She suffered a ruptured manhole gasket in
the forward main ballast tank during this attack, which gave
her a troublesome but controllable leak. On the night of 6-7
February while she was chasing a gunboat of about 2500 tons for
torpedo attack, her target saw her and turned to ram. GROWLER,
making 17 knots, rammed the gunboat. GROWLER'S commanding
officer, her Junior Officer-of-the-Deck, and one lookout were
killed and two lookouts were wounded by heavy machine-gun fire
during the engagement. GROWLER'S bow was rumpled, her bow
planes were inoperative, she had a bullet hole through her
conning tower hatch, and in addition had several leaks caused
by her outboard cables being punctured

- 1 -

[HANDWRITTEN: 2]

— page 90 —
FF12-15(42)/A16-3/00-jm                               TASK FORCE FORTY-TWO
                                                               Care of Fleet Post Office,
Serial 057                                                     San Francisco, California.

C-O-N-F-I-D-E-N-T-I-A-L                                        February 18, 1943.

Subject: U.S.S. GROWLER, Fourth War Patrol, comments on.

— page 91 —
[STAMP: Reg. No. 3971]
[STAMP: R.S. No. 3 01582]
[TYPED: 1943]

[TYPED: COMSOPAC FILE]

[TYPED: SOUTH PACIFIC FORCE]
[TYPED: OF THE UNITED STATES PACIFIC FLEET]
[TYPED: HEADQUARTERS OF THE COMMANDER]

[TYPED: A16-3/(11)]

[TYPED: Serial 0400]

[TYPED: C-O-N-F-I-D-E-N-T-I-A-L]

[TYPED: 1st Indorsement on]
[TYPED: CTF FORTY-TWO, Com.]
[TYPED: ltr. FF12-15(42)A16-]
[TYPED: 3/00-jm, Serial 057,]
[TYPED: dated Feb. 18, 1943.]

[TYPED: From: The Commander South Pacific Area and South]
[TYPED: Pacific Force.]
[TYPED: To : The Commander-in-Chief, United States Fleet.]
[TYPED: Subject: U.S.S. GROWLER, Fourth War Patrol, comments]
[TYPED: on.]

[TYPED: 1. Forwarded. The Force Commander is proud to]
[TYPED: extend his congratulations and commendation to this valiant]
[TYPED: ship and her courageous crew. The accomplishments exceeded]
[TYPED: the implication of the name GROWLER. The ship did more than]
[TYPED: growl; she bared her teeth and sank them in an enemy ship.]

[TYPED: 2. The ship will be repaired, the crew rested,]
[TYPED: and under a new commanding officer will undoubtedly, in all]
[TYPED: eagerness, go out again to emulate their late captain, Commander]
[TYPED: Howard W. GILMORE, US Navy, whose courage, skill, and deter-]
[TYPED: mination left their mark on the enemy.]

[HANDWRITTEN: W. F. Halsey]
[TYPED: W. F. HALSEY]

[TYPED: Copy to:]
[TYPED: VCNO]
[TYPED: Cincpac]
[TYPED: Cinclant]
[TYPED: Comsowespac]

[TYPED: Comsubpac]
[TYPED: Comsublant]
[TYPED: Comsubsowespac]
[TYPED: CTF 42]

[TYPED: Comsubron 8]
[TYPED: Comsubdiv 82]
[TYPED: CO USS GROWLER]

[STAMP: COMMANDER IN CHIEF]
[STAMP: U.S. FLEET]
[STAMP: RECEIVED]
[STAMP: 1943 MAR 22 12 30]

— page 93 —
[HANDWRITTEN: 1ST COPY]
[HANDWRITTEN: 7 01845]

U.S.S. GROWLER
Care of Fleet Post Office,
San Francisco, California,

SS215/A16-3
Serial 0157
C-O [STAMP: DECLASSIFIED] -A-L

From: The Commanding Officer.
To : The Commander Task Force SEVENTY-TWO.
Subject: Fifth War Patrol, U.S.S. GROWLER - Report of.
Reference: (a) Pacflt Conf. Ltr. No. 12-42.
Enclosure: (A) Subject Report.

1. In accordance with reference (a), enclosure
(A) is forwarded herewith.

A. F. SCHADE.

[STAMP: DECLASSIFIED ART. 0445, OPNAVINST 5510.1C]
BY [HANDWRITTEN: OP-0909C] DATE [HANDWRITTEN: 5/30/72]

[STAMP: DECLASSIFIED]

[HANDWRITTEN: 51884]

— page 94 —
ENCLOSURE (A)
C-O-N-F-I-D-E-N-T-I-A-L

U.S.S. GROWLER - REPORT OF FIFTH WAR PATROL - PERIOD FROM
May 13, 1943 TO , 1943. AREA
OPERATION ORDER NUMBER .

(A) PROLOGUE.

GROWLER returned to port on 17 February with the bow
seriously damaged as a result of ramming an enemy gunboat.
Repairs were effected and a new bow was built by Evans
Deakin Co. of Brisbane, Australia, after determining that
no marked damage was suffered by the tubes. The U.S.S.
FULTON began a regular refit, completely overhauling #3
Main Engine. All new main and crank bearings were installed
in #3 and #4 Main Engines. Submarine Base, Brisbane, Aust-
ralia built a 4" gun platform forward of the conning tower
and built a 20 mm. platform on the forward end of the
bridge. The 3" gun was shifted forward, a 20 mm. gun
was installed on the after 3" platform and another forward
of the bridge. On 1 May, 1943, ship was undocked with
most of the bow complete. Test firing, using dummy tor-
pedoes, was conducted alongside the tender. On 5 May
operated in Moreton Bay, fired exercise torpedoes from
the bow tubes. On 6 May tested and fired all guns.
Operated at sea for training from 7 May until 11 May.
Proceeded on patrol on 13 May conducting training on route.

(B) NARRATIVE.

May 14, 1943:

2000 (K) Escort departed.

Noon Position: 25-41 S. Miles Steamed 228
                   155-35 E. Fuel Used 2194 gal.

May 15, 1943:

Noon Position: 22-07 S. Miles Steamed 221.1
                   156-11 E. Fuel Used 2005 gal.

May 16, 1943:

Noon Position: 17-42 S. Miles Steamed 280
                   156-22 E. Fuel Used 2457 gal.

May 17, 1943:

Noon Position: 13-27 S. Miles Steamed 271
                   156-51 E. Fuel Used 2427 gal.

- 1 -

— page 95 —
7 01845

C-O-N-F-I-D-E-N-T-I-A-L

May 18, 1943:
Noon Position: 9-34 S. Miles Steamed 225
156-38 E. Fuel Used 2380 gal.

1410 (K) Position 9-28.5 S. 156-41.5 E.
Sighted unidentified patrol plane on easterly
course, flying low. PLANE CONTACT #1.

May 19, 1943:
Noon Position: 7-50 S. Miles Steamed 189
154-53 E. Fuel Used 1711 gal.

May 20, 1943:
0045 (K) Position 6-25 S. 153-59 E.
While proceeding north along neutral lane, in
full bright moonlight with a very hazy horizon,
the OOD aft and a lookout both reported a large
submarine close aboard (about 2000 yards).
Radar not in use since the bright moon deceived
us as to visibility. Believe he saw us at the
same time. Both subs started a turn. He sub-
merged, but could make no sound contact.

0115 (K) Surfaced and conducted radar search without
success. Contact not regained. CONTACT #1.

0245 (K) & Sighted what appeared to be either small patrol
0340 (K) craft or P.T. boat. In each case turned away
at high speed and made an "end run". CONTACTS
#2 and #3.

Noon Position: 5-13 S. Miles Steamed 179
153-53 E. Fuel Used 1613 gal.

May 21, 1943:
1015 (K) Position 2-58 S. 153-40 E.
Sighted one "Betty", about 50' above the water,
on course 295° T., distant about 500 yards. Went
deep for ten minutes. PLANE CONTACT #2.

Noon Position: 2-56 S. Miles Steamed 186
153-37 E. Fuel Used 2092 gal.

May 22, 1943:
Noon Position: 1-40 S. Miles Steamed 186
150-52 E. Fuel Used 1654 gal.

Entered assigned area from eastern boundary
about 2400 (K).

- 2 -

— page 96 —
C-O-N-F-I-D-E-N-T-I-A-L
2400 (K) Fuel used on route to station - 19462 gal.
         Miles steamed en route - 2078
         Fuel remaining - 74577 gal.

May 23, 1943:
Noon Position: 0-46 S. Miles Steamed 147
         149-02 E. Fuel Used 1053 gal.

The forward engine room sea suction line rup-
tured inside #5A fuel ballast tank. This was
discovered only after vainly trying to distill
fresh water from pure fuel. The evaporator
makeup feed is supplied from this sea suction.
This tank will be emptied as soon as possible.
The amount of oil lost is negligible, since
forward engines were not in use.

May 24, 1943:
Noon Position: 0-43 S. Miles Steamed 66
         148-50 E. Fuel Used 330 gal.

May 25, 1943:
Noon Position: 1-00 S. Miles Steamed 68
         148-40 E. Fuel Used 311 gal.

May 26, 1943:
0015 (K) Began two hour chase, tracking and attempting
         to reach a favorable attack position on a four
         ship cloud formation.

Noon Position: 1-00 S. Miles Steamed 87
         148-40 E. Fuel Used 471 gal.

May 27, 1943:
Noon Position: 2-21 S. Miles Steamed 141
         149-31 E. Fuel Used 873 gal.

May 28, 1943:
0125 (K) While attempting to shift the field excitation
         of #2 auxiliary engine from the after auxiliary
         distributing panel to self-excitation, an
         electrician's mate burned up the rheostat on
         the board, and badly burned his hand. To effect
         repairs and place #2 auxiliary engine back in
         commission it will now be necessary to kill all
         main and auxiliary power for about an hour.
         Two more battery cells were jumped out because
         of high iron contact and loss of capacity.

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— page 97 —
7 01845

C-O-N-F-I-D-E-N-T-I-A-L
May 28, 1943: (Cont'd)

Noon Position: 2-23.5 S. Miles Steamed 69
149-48 E. Fuel Used 257 gal.

1305 (K) Heard several distant heavy explosions.
Have spent four days covering the spot recom-
mended by the GRAYBACK, and two days covering
the ALBACORE's spot without seeing even a ripple
on the glassy seas. Believe these areas are
being avoided, so decided to head for the
Pelows - Rabaul traffic lanes off Rambutyo to
find a busy corner of our own.

May 29, 1943:

Noon Position: 2-15 S. Miles Steamed 113
148-08 E. Fuel Used 630 gal.

Two small patrol craft in sight most of the
day between Rambutyo and Tuna Island. Both
ered us only to the extent they hindered high
periscope observations. CONTACTS #4 and #5.

2300 (K) Patrolling off east coast of Rambutyo, eight
miles off shore. Sighted a brilliant air craft
flare which lighted up the entire island. No
planes or ships in sight. Also picked up a
directional radar which appeared close. Prob-
ably a plane landing to west of Rambutyo Island,
or a friendly plane on reconnaissance.

May 30, 1943:

Noon Position: 2-19 S. Miles Steamed 72
148-03 E. Fuel Used 298 gal.

Upon surfacing proceeded to "Fifth and Broadway".

May 31, 1943:

0615 (K) Picked up ship's smoke bearing 253° T., distant
15-20 miles. Could not close enemy and when
last seen smoke bore 180° T., headed on approx-
imate course 120°. Since this is first contact
in area, moved westward to patrol track of this
ship. It appears traffic is passing at least
20 miles west of Tingwon. CONTACT #6.

0720 (K) Heard two distant heavy explosions.

Noon Position: 2-52 S. Miles Steamed 121
149-29 E. Fuel Used 624 gal.

- 4 -

— page 98 —
C-O-N-F-I-D-E-N-T-I-A-L

May 31, 1943: Cont'd

2015 (K) Received CTF-72 #51 assigning new area.

June 1, 1943:

     Noon Position: 1-22 S. Miles Steamed 138
                      149-02 E. Fuel Used 634 gal.

1610 (K) Picked up smoke bearing 200°T. Went to normal
         approach at high speeds. Sighted single ship,
         type unidentified; closest range 8000 yards.
         Determined course as 340°, speed 10 knots, and
         at 1830 with enemy ship about 12 miles ahead
         surfaced and began chase. No contact was made
         during the night, which was very black, nor was
         it sighted after daylight. Radar out of comm-
         ission. CONTACT #7.

June 2, 1943:

     Noon Position: 0-32 N. Miles Steamed 159
                      148-07 E. Fuel Used 1156 gal.

June 3, 1943:

     Noon Position: 0.16 S. Miles Steamed 67
                      148-27 E. Fuel Used 380 gal.

June 4, 1943:

     Noon Position: 0-59 S. Miles Steamed 67
                      148-37 E. Fuel Used 275 gal.

1130 (K) Sighted ship bearing 307°T., about eight miles.
         Closed at high speeds on normal approach course.
         At 8000 yards target zigged away, presenting a
         50° angle on the bow. Nearest range 3900 yards.
         Enemy course, 140-150°, speed 13 knots - headed
         for Tingwon Island. Identified as similar to
         TAKATHO MARU, 3154 T. page 27, ONI-208J. It
         was very disappointing to miss this shot but
         we appear to be in a good spot - will remain
         here. Ships appear to pass through here unas-
         corted, singly, and at high speed. (1° S' -
         148-35 E.). CONTACT #8.

June 5, 1943:

0010 (K) Dark, moonless night, glassy sea, no horizon.
         Sighted either a large patrol vessel or a
         destroyer fairly close abeam to port. We were
         headed south patrolling at 3 knots, radar out
         of commission. Turned away at full speed (four
         engines); slowed to 3 knots. Target appeared
         to be headed away.

                               - 5 -

— page 99 —
C-O-N-F-I-D-E-N-T-I-A-L
7 01845

0020 (K) Sound reported pinging.

0100 (K) Lost contact, but it was suddenly picked up
closing us from the west. Believe he had
radar contact on us. We came to NE and went
ahead standard speed.

0135 (K) With the pinger behind us a vessel was sighted
dead ahead 4000 to 6000 yards distant. Started
to close for an attack. It appeared to be a
small tanker, with superstructure aft, similar
to KOKO MARU, Page 257, ONI 208J. He first
presented a 90° port angle, turned directly
away to 180°, then slowly swung around to 90°
starboard, then back to a large starboard angle.
At this point sound reported a high speed patrol
vessel closing on the port bow, with the pinger
closing astern. There was no chance to shoot
and it appeared the patrol vessels had us
covered so at

0203 (K) Submerged. The patrol vessels searched above
us for about 40 minutes, pinging ineffectively.
CONTACT #9 and #10.

0305 (K) Surfaced - Nothing sighted. The fact that we
were in contact with the patrol boats for two
and a half hours might indicate the small MARU
to be part of an AS search party. He could
easily have cleared the area at first contact.
Don't think we were ever sighted; which would
indicate sound or radar contact.

Noon Position: 1-00 S. Miles Steamed 75
148-36 E. Fuel Used 375 gal.

1919 (K) Received CTF-72 #64 assigning new area.

June 6, 1943:
Noon Position: 1-06 S. Miles Steamed 140
150-19 E. Fuel Used 791 gal.

June 7, 1943:
Noon Position: 1-33 S. Miles Steamed 67
150-25 E. Fuel Used 238 gal.

1500 (K) Full voltage battery ground. Found cell 107
forward dry, with a leak thru the jar. Necess-
ary to jump out two more cells. Now have ten
jumped out, with an additional low cell devel-
oping.

- 6 -

— page 100 —
C-O-N-F-I-D-E-N-T-I-A-L

Have completely rebuilt the SJ radar three
times and spent about 200 hours labor on it
and it still won't work.

June 8, 1943:
Noon Position: 1-32 S. Miles Steamed 65
150-50 E. Fuel Used 320 gal.

1830 (K) Upon surfacing headed for position SW of Mussau.
2145 (K) Received CTF-72 #72 giving position to head for.
2040 (K) to Sighted several airplane flares in vicinity of
2110 (K). Mussau.

June 9, 1943:
0920 (K) In position 2-00 S., 143-50 E. Sighted smoke
and heard faint pinging bearing 007° T., about
20 miles distant. At least one plane escort.
Ran at six knots for three hours on normal
courses; pinging and smoke both faded out.
Nothing ever sighted. CONTACT #11.

Noon Position: 2-00 S. Miles Steamed 169
148-45 E. Fuel Used 1263 gal.

1220 (K) Had decided to surface figuring to get in pos-
ition ahead of convoy about 1600 when we were
forced deep by a "Dave" plane headed directly
for us. PLANE CONTACT #3.

June 10, 1943:
Noon Position: 1-44 S. Miles Steamed 67
149-03 E. Fuel Used 602 gal.

June 11, 1943:
Noon Position: 1-07 S. Miles Steamed 64
148-03 E. Fuel Used 320 gal.

June 12, 1943:
Noon Position: 0-29 S. Miles Steamed 67
148-35 E. Fuel Used 272 gal.

June 13, 1943:
Noon Position: 1-26 S. Miles Steamed 93
147-43 E. Fuel Used 531

2018 (K) Upon surfacing headed for SE corner of Area but at
Received CTF-72 #84 changing Area assignment.
Headed North.

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— page 101 —
7 01845
C-O-N-F-I-D-E-N-T-I-A-L

June 14, 1943:
Noon Position: 0-24 S. Miles Steamed 139
148-24 E. Fuel Used 822 gal.
1815 (K) Sighted smoke bearing 140° T. Decided to remain
submerged and make moonlight approach.
1850 (K) Ship identified as a large hospital ship,
properly marked. CONTACT #12.
2000 (K) Surfaced. Ship still in sight. Course S40°
speed 8 knots, position 0-37 S., 148-30 E.

June 15, 1943:
Noon Position: 1-11 S. Miles Steamed 110
147-30 E. Fuel Used 577 gal.

June 16, 1943:
Noon Position: 1-50 S. Miles Steamed 80
147-02 E. Fuel Used 1216 gal.
No activity of any kind observed from See Adler
Harbor along the north coast of Manus.
1930 (K) Received CTF-72 #97 changing Area; headed
North 17 knots on three main engines.

June 17, 1943:
Noon Position 1-50 N. Miles Steamed 224
147-05 E. Fuel Used 2741

June 18, 1943:
1140 (K) Sighted KAMEKASE class destroyer bearing 13° T.,
distant 15,000 yards, course mean, 140° T.,
speed 15 knots. Closed for attack, but despite
favorable zig, closest range 4500 yards.
1240 (K) Last sighted still going Southeast. CONTACT #13.
Noon Position: 4-01 N. Miles Steamed 146
148-49 E. Fuel Used 986 gal.
1527 (K) Sighted destroyer bearing 000° T., on course
150° T., speed 19 knots. With a zero angle on
the bow, range about 8,000 yards he reversed
course to 040° T., and headed directly away.
Position: 4-04 N. - 146-47 E. CONTACT #14.

- 3 -

— page 102 —
C-O-N-F-I-D-E-N-T-I-A-L

The destroyers patrolling at high speed in-
dicates that ships are probably to Northeast
of us, also that one of our subs has been
detected. Upon surfacing headed Southeast
to close and gain attack position on enemy
ships. Obtained course and speed data from
GREMLING. Headed for daylight position of
convoy.

June 19, 1943:

0705 (K) Sighted smoke bearing 298° T. Ships apparently
          headed southwest. Unable to close. Decided
          to open and surface. CONTACT #15-25.

0951 (K) Sighted submarine on surface bearing 30° T.,
          speed 17 knots, course 200° T. We hoped it would
          be enemy, but recognized it as GREMLING. Ex-
          changed smoke bomb signals, surfaced and started
          chasing convoy.

1130 (K) With convoy smoke in plain sight, ships turned
          to northeast and tops came over fast. Submerged.
          GREMLING continued.

Noon Position: 2-07 N. Miles Steamed 197
                  148-31 E. Fuel Used 1970 gal.

1235 (K) Convoy back on southerly course. Surfaced on
          all main engines, 13.5 knots. Kept tops in
          sight and at

1438 (K) Submerged ahead of ships for attack. Their zigs
          were incomprehensible causing us to run at full
          speed most of the time to stay in front.
          Position: 1-38 N. - 148-15 E.

1616 (K) COMMENCED FIRING. Fired four fish at largest
          ship, similar to ZUIYO MARU, Page 126 O.N.I.
          208 (J) 7360T, 60 port track, range 1000 yards,
          gyros 1L, 1R, 4L, 4R. Fired two fish at sec-
          ond vessel, similar to TAITO MARU (Page 65 -
          4467T), 90° port track, range 2000 yards, gyros
          0°, 2R. Obtained two hits on each target.
          Sound heard all fish run normal; explosions
          heard, checking with time of run. Only observed
          hit was first on large MARU. We were directly
          in front of another MARU and an escort and
          started down immediately. Sounds of breaking
          up and interval explosions were heard from the
          smallest vessel.

- 9 -

— page 103 —
C-O-N-F-I-D-E-N-T-I-A-L

1619 (K) Depth charge attack began. This was the most
severe ever experienced by this vessel. First
run, he came over without pinging, dropped 11
depth charges. On all subsequent runs he would
locate us by pinging and listening, proceed
to position directly overhead and stop. He
may have had some sort of magnetic indicator.
After determining our direction he would drop
a small salvo of 1 to 3 charges. All these
appeared to be extremely close. Much minor
damage incurred. Forward gyro regulator went
out, firing circuits out forward and aft. Hold-
ing down clamps both sound heads carried away.
Pit log out. Many instruments lights and com-
partment lights out. In view of the trouble
with TDC and firing circuits, it was decided
not to trail the convoy.

1840 (K) Sighted large MARU, dead in water, smoking
heavily. One small MARU (possibly a gunboat)
and one patrol vessel standing by.

1915 (K) Surfaced in black stormy weather. Sent message
to CTF-72, regarding attack.

June 20, 1943:

0753 Sighted smoke bearing 239° T. Closed for
attack. Nearest range 9000 yards, course 150,
speed 8 knots. Unable to close because one
escort closed us and remained in vicinity for
several hours, requiring us to use evasive
measure (at periscope depth). CONTACT #27.

1200 (K) Noon Position: 1-45 N. Miles Steamed 194
             149-25 E. Fuel Used 1608 gal.

1300 (K) Lost all contact.

June 21, 1943:

0600 (K) Left Area. Miles Steamed in Area: 1503 miles
           Fuel Used in Area: 23,565 gal.
           Fuel Remaining: 52,012 gal.

Noon Position: 1-00 N. Miles Steamed 100
             152-13 E. Fuel Used 1729 gal.

- 10 -

— page 104 —
C-O-N-F-I-D-E-N-T-I-A-L

June 22, 1943:
Noon Position: 0-08 S. Miles Steamed 188
154-43 E. Fuel Used 1663 gal.

June 23, 1943:
Noon Position: 3-13 S. Miles Steamed 189
155-06 E. Fuel Used 1740 gal.

June 24, 1943:
At midnight passed between GREEN ISLAND and
CAPE HENPAN.

0830 (K) Position 5-41 S. - 153-53 E.
Sighted one "BETTY" on patrol.

Noon Position: 5-48 S. Miles Steamed 192
153-53 E. Fuel Used 1731 gal.

1215 (K) Heard pinging. Picked up the "Buka Anti-Sub
Patrol", consisting of two sub-chasers, one
trawler, one "catcher" type and one that
looked like a large motor launch. Three
vessels pinging. They passed within 1500
yards and although it appeared several times
that we had been detected at

1440 (K) They headed northwest.

1505 (K) Last sighted to northward. This is approxi-
mately the same position we contacted patrol
craft while heading for station. CONTACT #28-33.

June 25, 1943:
Noon Position: 8-23 S. Miles Steamed 175
154-17 E. Fuel Used 1789 gal.

June 26, 1943:
Noon Position: 10-09 S. Miles Steamed 145
155-54 E. Fuel Used 1423 gal.

June 27, 1943:
0710 (K) Sighted plane, probably a B-26, approaching.
Believe he dropped three bombs several miles
away. Submerged for 30 minutes. This plane
reported us as a Jap sub.

Noon Position: 13-56 S. Miles Steamed 221
156-11 E. Fuel Used

- 11 -

— page 105 —
C-O-N-F-I-D-E-N-T-I-A-L

Encountered very heavy seas. Forward 20 m.m.
gun platform carried away.

June 29, 1943:

Noon Position: 24-02 S. Miles Steamed 293
154-33 E. Fuel used 3581 gal.

June 30, 1943:

Arrived Brisbane, Queensland, Australia.

Miles Steamed from Station: 2033
Fuel Used en route: 22,420
Fuel Remaining: 29,592

- 12 -

— page 106 —
C-O-N-F-I-D-E-N-T-I-A-L

(C) WEATHER:
     All weather encountered was extremely unfavorable
for S/M operations. Seas were usually glassy smooth
making periscope operations difficult and at night the
horizon haze lowered visibility very much. Many rain
squalls passed over, which is normal for this season.

(D) TIDAL INFORMATION:
     Nothing unusual noted.

(E) NAVIGATIONAL AIDS:
     None. It should be noted that the eastern portion
of FENI ISLAND looks like a formation of ships as it comes
over the horizon. We were fooled by it twice.

- 13 -

— page 107 —
(F) SHIP CONTACTS:

Contact | Type of   | Position      | Course,   | Time,     | Initial   | Attack
No.     | Ship      |               | Speed     | Date      | Range     |
#1      | Large S/M | 6-25 S.       | South     | 0045 (K)  | 2,000 yds | Subs sighted each other at
        |           | 155-59 E.     | 15 kts.   | 20 May    |           | same time, turned away -
        |           |               |           |           |           | no attack.

#2-3    | Patrol    | 5-30 S.       | -         | 0340 to   | 8,000 yds | Evaded, high speed, on
        | Craft     | 154-00 E.     |           | 0540 (K)  |           | surface.
        |           |               |           | 20 May    |           |

#4-5    | Patrol    | Between       | Various   | 0300 (K)  | 3,000 yds | -
        | Craft     | NAUNA and     |           | 20 May    | or more.  |
        |           | RAIBUTYO Is.  |           |           |           |

#6      | Smoke     | 20 miles      | South-    | 0615 (K)  | 30,000 yds| -
        |           | west of       | east      | 31 May    |           |
        |           | TINGWON.      |           |           |           |

#7      | Uniden-   | 1-00 S.       | 340°      | 1610 (K)  | 24,000 yds| Chased during night and
        | tified    | 148-40 E.     | 10 kts    | 1 Jun.    |           | following day without
        |           |               | 60 RPM's  |           |           | further contact.

#8      | TAKATINO  | 0-59 S.       | 145°      | 1130 (K)  | 16,000 yds| Ship fully loaded.
        | MARU      | 148-35 E.     | 13 kts    | 4 June    |           | Zigged only, unable to
        |           |               | 128 RPM's |           |           | close.

#9-10   | Patrol    | 1-00 S.       | Various   | 0010 (K)  | 3,000 yds | Conducted A/S search
        | Craft     | 148-40 E.     |           | 5 June    |           | for 2½ hours - no
        |           |               |           |           |           | attack.

#11     | Smoke     | 2-00 S.       | 120°      | 0920 (K)  | -         | Unable to surface and
        |           | 148-30 E.     | 9 kts     | 9 June    |           | chase because of air
        |           |               |           |           |           | screen.

- 14 -

— page 109 —
7 01845

C-O-N-F-I-D-E-N-T-I-A-L
(G) PLANE CONTACTS:

Contact | Date &   | Position  | Course    | Type of Plane
No.     | Time     |           |           |
||||
#1      | 18 May   | 9-28.5 S. | Easterly  | Unidentified
        | 1410 (K) | 156-41.5 E.|           | Patrol Plane.
        |          |           |           |
#2      | 21 May   | 2-58 S.   | 295° - 50 | "BETTY"
        | 1015 (K) | 153-40 E. | ft. over  |
        |          |           | water.    |
        |          |           |           |
#3      | 9 June   | 2-00 S.   | 230° - air| "DAVE"
        | 0920 (K) | 148-30 E. | screen for|
        |          |           | unidentified|
        |          |           | ships.    |
        |          |           |           |
#4      | 24 June  | 5-41 S.   | Westerly -| "BETTY"
        | 0830 (K) | 153-53 E. | 1,000 ft. |
        |          |           | altitude. |
        |          |           |           |
#5      | 27 June  | 15-00 S.  | Southerly | "B-26"
        | 0710 (K) | 156-20 E. |           | This plane for-
        |          |           |           | ced us down -
        |          |           |           | reported us to
        |          |           |           | be a Jap submar-
        |          |           |           | ine.

- 16 -

— page 111 —
[STAMP: 7 01845]

C-O-N-F-I-D-E-N-T-I-A-L

(I) ENEMY A/S MEASURES:

Penetration - The only time this vessel was able to obtain
a favorable firing position, after sighting,
was by high speed surface running just beyond
range of targets. Enemy countered this by
sending DD's ahead on wide searching sweeps
at high speed.

Tactics during depth charge attack - Attacking vessel would
attempt to obtain position directly overhead
and then slow or stop to determine submarine's
course. In doing this he may have used some
type of magnetic indicator. Charges were
dropped and speed increased simultaneously.
Pinging used intermittently - never shifted
to short scale. DD slowed immediately upon
depth charge explosions to remain near subs
position. This was very effective and per-
mitted him to regain contact almost instantly.
Charges appeared to be heavier than previ-
ously experienced.

- 18 -

— page 112 —
C-O-N-F-I-D-E-N-T-I-A-L

(J) MAJOR DEFECTS:

1. SJ Radar - This radar in its operation up until the
29th of May from May 13 was very good, after which
time failures occured within the transmitter and
oscillator convertor. The oscillator convertor
was found to have a broken down resistor between
the filament and grid of the 713A. This short
caused the loss of all "I.F.". After replacing
resistor "I.F." stage worked very well.

The failure of transmitter was noted when the "I.F."
stage in the oscillator convertor failed. The trans-
mitter began drawing very high plate current at a
normal voltage. Made point to point tests through
transmitter with OHM meter, but found nothing wrong.
All values checked according to the diagram in the
temporary instruction book, checked through circuits
both in transmitter and knocker unit, but was un-
able to find trouble.

2. Main Storage Batteries - May 27, 1943: Jumped out
cell #67 F. due to loss of capacity and low voltage.

June 12, 1943: Jumped out cell #107 F. due to a leak
in the jar. This cell has a zero resistance from the
element to the insert, and from insert to ground; it
also caused a full voltage ground on the forward
battery.

June 23, 1943: Jumped out cell #10 F. due to loss of
capacity and low voltage. We now have a total of
twelve cells permanently jumped out, all bad cells
(6) are in the forward battery.

3. May 27, 1943: While attempting to shift to self ex-
citation on the #2 auxiliary generator a short cir-
cuit developed across the field rheostat switch,
burning out this switch and that part of the after
auxiliary board surrounding the switch to such an
extent that the board is now a conductor. The switch
was replaced with a similar one from a hot water
heater which promptly burned out also. Repairs were
then effected by by-passing this switch, an operation
that required securing all main and auxiliary power
for one hour.

4. Main Generators: On departure for patrol the insul-
ation resistance of the armatures of the main gener-
ators were:

#1 - - - - - - - 1.4 megohms
#2 - - - - - - - 1.4 megohms
#3 - - - - - - - 0.9 megohms
#4 - - - - - - - 1.3 megohms

- 19 -

— page 113 —
[STAMP: 7 01845]
C-O-N-F-I-D-E-N-T-I-A-L

(J) MAJOR DEFECTS (CONT'D):

Every third day during the patrol the armatures,
brush rigging and generator casings were thoroughly
wiped down with grain alcohol and then blown for
several hours with warm air. Despite this the
insulation resistance gradually became lower on
all main generators, having now reached following
values:

#1 - - - - - - 0.8 megohms
#2 - - - - - - 0.5 megohms
#3 - - - - - - 0.3 megohms
#4 - - - - - - 0.2 megohms

5. May 23, 1943: The low sea suction for the main
engine circulating water developed a leak within fuel
ballast tank 5-A. The evaporators receive their
feed from this suction; consequently diesel oil
was supplied to the evaporators as feed until the
oil was discovered in the distillate. The low
suction was then secured, utilizing the high suc-
tion until all the fuel was expended from fuel
ballast tank 5-A.

6. Evaporators: While distilling water with #1 evap-
orator two of the five belts that drive the vapor
compressor unit broke. Upon disassembly it was
found that the driven and driving gears were badly
worn, causing improper rotor lobe clearances,
allowing the lobes to make contact with each other
and with the casing. Unit repaired with the one
set of spares on board. An inspection was then
made of the vapor compressor unit of the #2 evap-
orator, which was found to be in a similar condi-
tion, however no spare parts are available on board.
These units have never been replaced since this
vessel was commissioned, and it is felt that the
casualty is due to normal wear. Due to the low
compression pressure and the presence of an oil
film in the evaporator, the output is now reduced
to ten gallons per hour.

- 20 -

— page 114 —
C-O-N-F-I-D-E-N-T-I-A-L

(K) REMARKS:
Own radio reception complete except for #27 of May.
Last Serial Received # 39 . Last Serial Sent # 4 .

A close check was kept on HMP schedule 16.68 kcs.
Reception on the surface using normal antennae on the loop
was good at all times. Submerged, nil. The ARC has
worked very well and it is believed to be very effective
if the person operating it can distinguish the radar
noises aboard his own ship. Two radars
were picked up during this patrol. The first on May 19
at Lat. 6.5 S., Long. 149.1 E., signal strength about
S2-S3, time being from 1640 to 1730 GMT with a frequency
of 210 MCS. Did not seem directional for signal was
steady throughout the forty minutes it was heard. The
second radar was picked up on 29 May Lat. 2-26 S., Long.,
148-28 E., with a signal strength S4-S5, with a frequency
of 175 MCS, and was from a directional radar. This
latter radar was believed to be the radar of a plane which
dropped a flare some distance away, after which the ARC
was set up and a signal was picked up almost immediately.
The signal went out at regular intervals such as a direc-
tional might do; signal lasted about fifteen minutes.

SD Radar - This radar worked normal throughout the
time it was used on this patrol.

No sound density layers encountered. Conditions
usually good. Maximum range, 12,000 yards on DD at 19
knots.

Habitability - Good.

Portable and Battery Water - Although unlimited,
considerable difficulty experienced with evaporators re-
quiring strengent measures in use.

- 21 -

— page 115 —
[STAMP: 7 01845]

FC5-8/A16-3
Serial 030

CONFIDENTIAL

FIRST ENDORSEMENT to
CO GROWLER Report of
Fifth War Patrol.

SUBMARINE SQUADRON EIGHT
Fleet Post Office
San Francisco, California
June 30, 1943

From: Commander Submarine Squadron EIGHT.
To: Commander Task Force SEVENTY-TWO.

Subject: U.S.S. GROWLER (SS215), Fifth War Patrol;
Comments on.

1. During her fifth war patrol of forty-seven days
duration, GROWLER spent thirty-five days in enemy areas. This
patrol was well conducted, and was highlighted by the aggress-
ive chase and attack on a southbound convoy, two hits being
obtained on each of two ships. Aside from the convoy which
was successfully attacked, however, few suitable torpedo tar-
gets were encountered and none of these could be closed to
attack range. It is recommended that the GROWLER be credited
with sinking one passenger-freighter of 4,467 tons, and
severely damaging a freighter-tanker of 7,360 tons.

2. The material condition of the GROWLER is
generally good. It is expected that she will be ready for
her sixth war patrol at the end of a normal refit period.
Except for the punctured cell, all low main storage battery
cells will be cycled and treated. Due to the inaccessibility
of these cells and the time required for the work, replacement
is not contemplated until the next Navy Yard overhaul. Main
generator armatures continue to show low insulation resistance.
It is believed that these readings can be raised considerably
by thorough cleaning and ventilation but experience has shown
that they gradually become lower again while on patrol.

3. No difficulty was experienced with the new bow
installed during last refit period at Brisbane and all
torpedoes fired from the bow tubes appeared to function
normally.

E. C. BAIN,
Acting.

— page 116 —
7 01845
FF12-15(72)/A16-3/Pk

Serial 0226

CONFIDENTIAL
2nd ENDORSEMENT to
CO GROWLER Report
of Fifth War Patrol.

From:
To :
Via :
Subject:

TASK FORCE SEVENTY-TWO,
Care of Fleet Post Office,
San Francisco, California,

June 30, 1943.

The Commander Task Force SEVENTY-TWO.
The Commander in Chief, UNITED STATES FLEET.
(1) The Commander, THIRD FLEET.

U.S.S. GROWLER (SS215) - Report of Fifth War
Patrol; comments on.

1. GROWLER departed Brisbane 13 May, 1943, on her
Fifth War Patrol. On the night of 20 May she sighted a
large submarine west of Bougainville and submerged for at-
tack, but no further contacts were made. Early the follow-
ing morning she evaded two patrol boats on the surface. On
22 May she arrived in her initially assigned area in the
vicinity of Mussau. This area was patrolled until 29 May,
no contacts being made with exception of two patrol boats
sighted between RAMBUTYO and NAUNA Islands. On 30 May she
shifted area to vicinity TINGWON Island. Smoke was sighted
on the morning of 31 May but could not be developed. An
unidentified ship was sighted during late afternoon of 1
June in area north of Mussau. GROWLER gave chase after
dark but no further contact was made. She sighted a large,
fast, unescorted freighter of TAKATIHO MARU class, south-
bound and heavily loaded, the morning of 4 June but was
unable to close. During the early morning of 5 June she
evaded an anti-submarine search group of two patrol vessels
and one small Maru. Smoke was seen and pings heard the
morning of 9 June but no ships contacted. During late
afternoon 14 June she sighted a properly marked hospital
ship on northwesterly course. She sighted two destroyers
on 18 June but was unable to close for attack. The morn-
ing of 19 June GROWLER sighted smoke of a convoy consist-
ing of eight ships and three escorts. She chased this
convoy on the surface, exchanging information and plans
for coordinated attack with GREENLING during the chase. In
midafternoon she fired four torpedoes at the leading ship
of this convoy, and two torpedoes at the second ship, get-
ting two hits on each. The first ship was seriously dam-

- 1 -

— page 117 —
[STAMP: 7 01845]

FF12-15(72)/A16-3/Fk                               TASK FORCE SEVENTY-TWO,
                                                    Care of Fleet Post Office,
Serial 0226                                         San Francisco, California.

CONFIDENTIAL

                                                    June 30, 1943.

Subject:      U.S.S. GROWLER (SS215) - Report of Fifth War
              Patrol; comments on.

— page 119 —
[STAMP: Reg. No. 9295]
[STAMP: L.S. No. 7 01845]
ejh

COMSOPAC FILE

A16-3/(11)
Serial 01132
C-O-N-F-I-D-E-N-T-I-A-L

SOUTH PACIFIC FORCE
OF THE UNITED STATES PACIFIC FLEET
HEADQUARTERS OF THE COMMANDER

JUL 15 1943

3rd Endorsement on
CO USS GROWLER Re-
port of Fifth War
Patrol.

From: The Commander South Pacific.
To: The Commander-in-Chief, United States Fleet.
Subject: U.S.S. GROWLER (SS215) - Report of Fifth War
Patrol; comments on.

1. Forwarded.

2. The Commander South Pacific congratulates the
Commanding Officer, officers and crew of the GROWLER on the
sinking of one enemy ship and the damaging of another. It
is noted that this attack was made in coordination with the
U.S.S. GREENLING.

3. The possibility that the enemy is employing
a magnetic indicator to advantage in anti-submarine attack
is of much interest.

[SIGNATURE: W. F. Halsey]
W. F. Halsey.

[STAMP: COMMANDER IN CHIEF]
[STAMP: U.S. FLEET]
[STAMP: RECEIVED]
[STAMP: 1943 JUL 26]
[STAMP: 11]
[STAMP: 12]

Copy to:
VCNO
Cincpac
Cinclant
Comsowespac
Comsubpac
Comsublant
Comsubsowespac
CTF 72
Comsubron 8
Comsubron 14
Comsubdiv 81
Comsubdiv 141
CO USS GROWLER

— page 121 —
[HANDWRITTEN: 2ND COPY]

SS215/A16-3
Serial 0159
DECLASSIFIED T-I-A-L

U.S.S. GROWLER
Care of Fleet Post Office,
San Francisco, California.
September 12, 1943.

From: The Commanding Officer.
To : The Commander in Chief, United States Fleet.
Via : (1) The Commander Submarine Division EIGHTY-ONE.
(2) The Commander Submarine Squadron EIGHT.
(3) The Commander Task Force SEVENTY-TWO.

Subject: U.S.S. GROWLER, Report of War Patrol number Six.

Reference: (a) Cominch and CNO Ltr. FF1/A-3 Serial
01529 of May 17, 1943.

Enclosure: (A) Subject Report.
(B) Chronological list of noon positions,
miles steamed, and fuel used.

1. Enclosure (A), covering the Sixth War Patrol
of this vessel conducted in the Bismarck-Solomons Sea
during the period 21 July, 1943 to 12 September, 1943,
is forwarded herewith.

[SIGNATURE: A. F. SCHADE]
A. F. SCHADE.

[STAMP: DECLASSIFIED-ART. 0445, OPNAVINST 5510.1C]
[HANDWRITTEN: BY OP-09C DATE 5/30/72]

[STAMP: DECLASSIFIED]

[HANDWRITTEN: 56146]

— page 122 —
ENCLOSURE (A)
C-O-N-F-I-D-E-N-T-I-A-L

(A) PROLOGUE:

          GROWLER returned from Fifth War Patrol on 30
     June and was given regular refit by U.S.S. FULTON.
     #4 Main Engine was overhauled. New platform was
     installed for 20m.m. gun mount forward of the
     bridge. Mike negat voice unit installed. RDF
     loop removed and relocated in periscope shears
     as a submerged antenna.

          On 21 July, proceeded to Moreton Bay for train-
     ing. Unable to conduct sound test because of bad
     leak in conning tower. Conducted gun firing and
     test firing one exercise torpedo - #1 tube. Put
     divers down to examine shutter and door. Returned
     to FULTON for repairs and at 2330, 21 July, departed
     on patrol.

(B) NARRATIVE:

22 July, 1943:

2100 (K)    Joined COUCAL, SILVERSIDES, TUNA, conducted
            night exercises.

23 July, 1943:

            Conducted submerged approaches; COUCAL,
            target. Found SJ radar mast flooded. Opened
            the head off the mast, renewed all gaskets,
            built up the knife edges which were chipped,
            cleaned the interior and sealed the mast.
            Radar back in commission in six hours. Con-
            ducted exercises until midnight.

24 July, 1943:

0642 (K)    SILVERSIDES sighted enemy periscope. All
            subs turned away. Position: 20-01 S.
                                        154-23 E.

1200 (K)    Began "wolf pack" exercises; COUCAL target.
            Continued exercises, day and night until -

27 July, 1943:

1200 (K)    at which time all units rendezvous-ed.

1545 (K)    Entered JOMARD PASS.

- 1 -

— page 123 —
1700 (K) Moored alongside COUCAL; fueled to capacity
(12,407 gals.), took on water and fresh pro-
visions. Received routing orders from CTP-
72.4.

1920 (K) Underway proceeding independently on patrol -
16 knots.

29 July, 1943:

0055 (K) PLANE CONTACT #1. PBY "Black Cat" flew dir-
ectly overhead, altitude 500 ft. and circled
several times. Although both sub and plane
used wrong recognition signals, no offensive
action. Position: 7-15 S.
153-56 E.

30 July, 1943:

1200 (K) Arrived in patrol area.

Miles to Station - - - - 2035 miles.
Fuel Used Enroute - - - 20,744 gals.
Fuel Remaining - - - - 85,702 gals.

31 July, 1943:

Proceeded at sixteen knots to intercept reported
ships:

1425 (K) SHIP CONTACT #1. PLANE CONTACT #2. Sighted
single column of smoke bearing 113° T., dis-
tant about 15 miles. Position: 1-14 S.
152-05 E.

Went ahead at 18 knots to gain attack position.

1450 (K) Forced to dive by air escort (large unidentified
patrol plane). This ship was making at least
16 knots by track, and was 50 miles from reported
position. Night chase appeared futile. (Air
sighting confirmed data, giving speed 17 knots.)
Believe own aircraft drove ship off track.
Plane to sub communications would aid in coor-
dinated attack.

1 August, 1943:

Headed for HERMIT ISLANDS, 16 knots, to intercept
reported traffic.

2 August, 1943:

0545 (K) SHIP CONTACT #2. Sighted what appeared to be
HERMIT ISLANDS. Started closing. Distinguished
one small MARU trailed by small boat, bearing
287 T., range 6000 yards, course 210° T. Dawn
was breaking fast behind us, so submerged to
- 2 -

— page 124 —
open out.

0655 (K) Surfaced at 18 knots to gain attack position.
         Made an "end run", keeping tops in sight.

0950 (K) Submerged nine miles east of LUF ISLAND
         ahead of target. Target identified as an
         armed trawler, 1500 T., towing a
         large barge, also heavily loaded.

1028 (K) Fired three torpedoes, range 900 yards,
         100° track.

         At least one torpedo ran under target. No
         explosions. Three depth charges - not close.
         Position: 1-32 S.
                    145-15 E.

1050 (K) Target last sighted, course southwest, headed
         towards WEEWAK. Surfaced and proceeded to
         AM position of reported PELELIU convoy. No
         contact with this convoy.

5 August, 1943:

         Patrolling along track of reported MARU.

1025 (K) PLANE CONTACT #3. Forced down by one "Betty"
         headed Southeast. Position 0-32 S.
                                  153-37 E.

6 August, 1943:

         Patrolling along track of reported HCL.

1317 (K) Received orders to abandon everything and
         proceed to form surface scouting line south
         of TRUK.

7 August, 1943:

0600 (K) Arrived on station, started surface scouting.

8 August, 1943:

1015 (K) Position: 5-05 N.
                    154-25 E.

         Noted two radars sweeping across the 3D
         screen. Shifted to ARC and obtained strong
         signal on 250 M.C.

         - 3 -

— page 125 —
10 August, 1943:
0824 (K)         PLANE CONTACT #4. Forced down by single
                 engine plane. Position: 4-49 N.
                                          152-20 E.

                 Seven bombs dropped; not close.

1125 (K)         PLANE CONTACT #5. Forced down by plane sim-
                 ilar to "Dave". Position: 4-51 N.
                                          152-14 E.

11 August, 1943:
1114 (K)         PLANE CONTACT #6. Forced down by formation
                 of five "Betty" bombers. Position: 4-06 N.
                                          151-50 E.

12 August, 1943:
1200 (K)         Position: 2-59.5 N.
                           151-45 E.

                 OOD reported seeing a mast on the horizon,
                 bearing north. Closed, but no further contact.

13 August, 1943:
0945 (K)         PLANE CONTACT #7. Submerged for unidentified
                 plane, sighted; radar range, 12 miles. This
                 plane was coming in on his radar, as indica-
                 ted by radar disturbances, but apparently
                 did not see us. Position: 4-06 N.
                                          151-50 E.

1308 (K)         PLANE CONTACT #8. Submerged for plane, radar
                 contact, 20 miles, closing. Position: 3-00 N.
                                          151-03 E.

14 August, 1943:
1014 (K)         PLANE CONTACT #9. Submerged for radar contact,
                 three planes, 7 miles, closing to 4 miles.
                 Position: 3-59 N.
                           152-22 E.

                 Planes not sighted.

1153 (K)         PLANE CONTACT #10. Submerged for radar contact,
                 1 mile. Skies cloudy and overcast. Plane
                 came in on radar, apparently did not see us,
                 but remained overhead for 1½ hours, as deter-
                 mined by using radar submerged.
                 Position: 3-56 N.
                           152-30 E.

- 4 -

— page 126 —
15 August, 1943:
1030 (K) PLANE CONTACT #11. Submerged, radar contact,
          nine miles. Position: 4-03 N.
                               152-24 E.

1349 (K) PLANE CONTACT #12. Submerged. Sighted
          KAWANISI-97 flying boat. (No indieation
          on radar). Position: 4-00 N.
                               152-17 E.

          He sighted us and remained overhead for
          two hours.

16 August, 1943:
0420 (K) SHIP CONTACT #3. Sighted patrol craft or
          sub-chaser, bearing east. Position: 3-15 N.
                               151-45 E.

          Kept him in sight for an hour to determine
          his actions. He appeared to be patrolling
          North-South. Checked with ARC - radar indic-
          ation strength 3 on 1620 M.C. 6th harmonic.
          Just prior to dawn lost contact in rain
          squall. Went ahead full speed to gain
          position to south in the event he was
          waiting at a rendezvous.

0957 (K) PLANE CONTACT #13. Forced down by one "Mavis"
          patrol plane, sighted, 6 miles. (No radar
          indication; replaced all tubes in SD radar).
          Position: 3-04 N.
                     152-31 E.

18 August, 1943:
0850 (K) PLANE CONTACT #14. Submerged for plane con-
          tact on radar, 21 miles, closing.
          Position: 3-58 N.
                     152-08 E.

          Quite a relief to have the radar working again.

1325 (K) PLANE CONTACT #15. Submerged for plane
          contact by radar, 26 miles, closing.
          Position: 3-57 N.
                     152-03 E.

21 August, 1943:
0718 (K) PLANE CONTACT #16. Submerged for plane con-
          tact by radar, 6 miles. Position: 4-45 N.
                               151-21 E.

          - 5 -

— page 127 —
0928 (K) PLANE CONTACT #17. Submerged, plane contact
           by radar. Two plane radars were seen on
           our SD giving two large steady "pips".
           Position: 4-43 N.
                      151-12 E.

22 August, 1943:

0817 (K) Submerged for bad weather, poor visibility.

1110 (K) PLANE CONTACT #18. Sighted through periscope,
           one "Mavis" patrol plane, flying low, course
           north. Position: 4-50 N.
                      152-22 E.

23 August, 1943:

1600 (K) FISH STORY #1. Ran into school of blackfish.
           Hit one head on, with severe jar. Ran over
           him and cut him up with the propellers. Left
           a large pool of blood and fish chunks. No
           apparent damage.

24 August, 1943:

1000 (K) PLANE CONTACT #19. Submerged for plane contact
           by radar, 20 miles, closing.
           Position: 3-00 N.
                      152-37 E.

1426 (K) PLANE CONTACT #20. Sighted one "Mavis" patrol
           plane, 3 miles, flying very low.
           Position: 2-57 N.
                      152-27 E.

25 August, 1943:

1915 (K) SHIP CONTACT #4. Sighted hospital ship prop-
           erly lighted, course north, speed 12 knots.
           Position: 4-00 N.
                      151-24 E.

26 August, 1943:

0400 (K) Sounded off, prior to leaving patrol line.

0635 (K) PLANE CONTACT #21. Radar indications, two
           planes, 4 to 12 miles. Position: 3-20 N.
                      151-40 E.

27 August, 1943:

1920 (K) Sighted four searchlights from K.V.E.N.G,
           distant 135 miles.

- 6 -

— page 128 —
28 August, 1943:
Patrolled north of TINGWON.

1259 (K) SHIP CONTACT #5. Sighted smoke bearing
176°, distant 15 miles. Made approach
at high speeds, but nearest range 9400
yards.

1725 (K) Target last seen bearing 295° T. Sur-
faced and gave chase. Target course 300°T.,
speed 9 knots. About 6,000 T. M.RU. un-
identified. Position: Initial: 2-20 S.
149-21 E.

Contact not regained after dark. Aban-
doned search at 2120 (K), returned to area.

1 September, 1943:
Spent two days east of DYMUL ISLANDS,
observing GAZELLE CHANNEL with no con-
tacts. Returned to focal point of traffic
southwest of TINGWON.

1405 (K) Sighted smoke bearing 042° T., distant at
least 18 miles. Position: 2-48 S.
149-31 E.

Surfaced to investigate.

1503 (K) PLANE CONTACT #25. Sighted plane, almost
overhead, about 4000 ft., course South.
It appeared to be a B24, but submerged
deep for 15 minutes. No further indic-
ations of smoke. If this smoke came from
operating as later indicated by air
sightings) they hugged the coast of NEW
HANOVER taking advantage of stormy
weather and low visibility.

4 September, 1943:

0406 (K) SHIP CONTACT #6. Sighted large hospital
ship properly marked, course 160° T.,
speed 8-10 knots. Position: 2-37 S.
149-26 E.

In cover of rain squall passed about
3500 yards.

0606 (K) SHIP CONTACT #7. Sighted smoke bearing
038° T., 8 miles. Position: 2-28 S.
149-20 E.

- 7 -

— page 129 —
Course east, speed 10 - 12 knots. Unable
to close, nearest range about 5 miles.
Ship had two stacks and heavy formast
similar to gunboat.

2100 (K) SHIP CONTACT #8. Sighted unidentified vessel
astern in glow of the moon which was just
setting. We were about 10 miles north of NEW
HANOVER and his course was apparently toward
BOUGAINVILLE although he was in view for only a
few minutes. Almost immediately we were
enveloped in a heavy rain squall. SJ radar
out of commission. Search and chase did
not appear favorable, so at 2200 (K), with
no further contact proceeded.

5 September, 1943:

2200 (K) Departed patrol area.

Miles steamed on Station - - - 5,900 miles.
Fuel used on Station - - - - 50,066 gals.
Fuel remaining - - - - - - 35,635 gals.

6 September, 1943:

FISH STORY #2. Upon surfacing the deck was
found covered with large Bonita fish. We
collected a large sack full (over fifty) and
served fresh fillet to all hands.

7 September, 1943:

0700 (K) PLANE CONTACT #25 - #26. Sighted unidentified
plane about 8 miles, course north. It
appeared to be a float plane. Submerged and at -

0732 (K) Surfaced, but immediately dived again for a
radar contact, 8 miles. Plane not sighted.
At 0753 (K) all clear.

8 September, 1943:

0400 (K) Met New Zealand corvette TUI and SILVERSIDES
at rendezvous. Proceeded to pass through the
SOLOMONS chain south of RUSSEL ISL. W, under
escort. During the day saw numerous planes
and ships. (Not listed under contacts).

1330 (K) GROWLER and SILVERSIDES proceeded in company.

9 September, 1943:

0632 (K) PLANE CONTACT #27. Sighted one Hudson (Aust.)

- 8 -

— page 130 —
stern, 6 miles, heading for us. SILV R-
SIDES submerged. We exchanged recognition
signals with plane, notified plane that
sub was friendly, then, by sound, notified
SILVERSIDES that plane was friendly.

12 September ARRIVED BRISBANE.

- 9 -

— page 131 —
ENCLOSURE (..)
C-O-N-F-I-D-E-N-T-I-A-L
(C) WEATHER:
Nothing unusual noted.

(D) TIDAL INFORMATION:
Nothing unusual noted.

(E) NAVIGATIONAL AIDS:
NONE.

(F) TABLE OF SHIP CONTACTS:
On separate sheet.

(G) TABLE OF AIRCRAFT CONTACTS:
On separate sheet.

(H) ATTACK DATA:
On separate sheet.

(I) MINES:
No Data.

(J) ANTI-SUB MEASURES AND EVASION TACTICS:
Only aircraft on A/S patrol were encountered.

(K) MAJOR DEFECTS AND DAMAGE:
No Engineering Casualties. Except for the main
storage battery, which has been made the subject of
a separate report, there were no electrical casualties.

- 10 -

— page 132 —
(F) SHIP CONTACTS:
NO. | Lat. | Long. | Time | Date | Type | Initial Range | Est. Course & Speed | How Con-tacted | Remarks
1 | 1-14 S. | 152-05 E. | 1425 | 31 July | - | 15 mi. | North | P | Surfaced to gain attack
| | | | | | | 16 kno | | position but forced
| | | | | | | | | down by air screen.
2 | 1-32 S. | 145-15 E. | 0545 | 2 Aug | Armed Traw- | 6000 | 210° | SN | Sighted prior to dawn,
| | | | | ler towing | | 9 knots | | circled and fired 3
| | | | | big barge | | | | fish at 1020(T). Fish
| | | | | | | | | ran under.
3 | 3-05 N. | 151-45 E. | 0420 | 16 Aug | Sub-chaser | 8000 | Patrolling | SN | Observed movements for
| | | | | | | | North-South | | about 1 hour then lost
| | | | | | | | 12 knots | | contact in rain.
4 | 4-00 N. | 151-24 E. | 1915 | 25 Aug | Hospital | 24000 | North | SN | Properly Ii-
| | | | | | ship | | 12 knots | P | Lost contact after
| dark.
5 | 2-19 S. | 149-21 E. | 1250 | 28 Aug | 6,000 T. | 30000 | 300° | SN | Visibility low. Rain
| | | | | Maru | | 9 knots | | squalls. Passed abeam
| 3500 yards.
6 | 2-37 S. | 149-20 E. | 0406 | 4 Sept | Hospital | 12000 | 160° T. | P | Unable to close.
| | | | | | ship | | 8-10 knots | | Sighted in path of moon.
7 | 2-28 S. | 149-29 E. | 0606 | 4 Sept | PG | 16000 | 90-110° | SN | Lost contact almost
| | | | | | | | 10-12 | | immediately in heavy
| | | | | | | | knots | | squall. No identif-
| ication as to type or
| size.
8 | | | | 4 Sept | Uniden. | 12000 | 160° - 230° | SN | Lost contact almost
| immediately in heavy
| squall. No identif-
| ication as to type or
| size.

- 11 -

— page 133 —
(a)
NO. | TIME   | DATE    | LATITUDE | LONGITUDE | TYPE        | RANGE    | ALTITUDE  | COURSE   | SPEED    | HOW CON- | REMARKS
    | TACTED   |
1   | 0055 K | 29 July | 7-15 N.  | 153-56 E. | PBY "Black- | 500 ft.  | Overhead  | Circling |          | SN       | Both used wrong ro-
    |        |         |          |           | cat"        |          |           |          |          |          | gnition signals
    | but not molested.
2   | 1450 K | 31 July | 1-14 S.  | 152-05 E. | "Betty"     | 1000 ft. | 10 miles  | 150°     | 200 kts. | Air screen | While attempting
    | and ship | to gain attack
    | SD       | position, lost
    | sight of plane.
3   | 1025 K | 5 Aug.  | 0-30 N.  | 153-28 E. | "Betty"     | 1000 ft. | 8 miles   | 270°     | 200 kts. | SD       | Detected; reported
    | position.
4   | 0900 K | 10 Aug. | 4-48 N.  | 151-20 E. | Unident.    | 1000 ft. | 10-12 mi. |          | 200 kts. | SD       | Plane spotted us;
    | dropped 7 bombs.
5   | 1125 K | 10 Aug. | 5-12 N.  | 152-14 E. | "Dave"      | 1000 ft. | 4 miles   |          |          | SD       | Evidently came
    | in on radar contact -
    | very strong radar
    | disturbance on SD.
6   | 1114 K | 11 Aug. | 4-06 N.  | 151-50 E. | 5 "Betty"   | 2500 ft. | 4 miles   | South    | 200 kts. | SD       | Loose formation
    |        |         |          |           | bombers     |          |           |          |          |          | of 5 bombers.
7   | 0945 K | 13 Aug. | 3-00 N.  | 151-35 E. | Unident.    | 1000 ft. | 12 miles  | North    |          | SD       | Plane using radar
    | visibility poor -
    | sky overcast
    | cloudy.
8   | 1508 K | 13 Aug. | 5-59 N.  | 152-20 E. | Unident.    | Not seen | 20 miles  |          |          | SD-radar | -
9   | 1014 K | 14 Aug. | 5-59 N.  | 152-22 E. | Unident.    | Not seen | 4 miles   |          |          | SD-radar | Contact indicating
    | 3 planes,
    | visibility poor.

- 12 -

— page 134 —
(G) FLAME CONTACT REPORT
NO. | TIME | DATE | LATITUDE | LONGITUDE | TYPE | RANGE | ALTITUDE | EST COURSE | EST SPEED | HOW CONTACTED | REMARKS
10 | 1153 K | 14 Aug. | 35-00 N. | 152-17 E. | Unident. | 1 mile | 500 ft. | North | Circled | 3D | No indication of
   |       |         |           |           |         |         |          |           | Overhead |    | plane radar.
11 | 1020 K | 15 Aug. | 35-00 N. | 152-21 E. | Unident. | 1 mile | 500 ft. | South | Circled | 3D | Sighted by and
   |       |         |           |           |         |         |          |           | Overhead |    | circled overhead.
12 | 1340 K | 15 Aug. | 35-04 N. | 152-31 E. | "Travis" | 6 mile | 2000 ft. | South | Circled | 3D | Sight contact.
   |       |         |           |           |         |         |          |           | Overhead |    |
13 | 0957 K | 16 Aug. | 35-04 N. | 152-31 E. | "Travis" | 6 mile | 2000 ft. | South | Circled | 3D | Sight contact.
   |       |         |           |           |         |         |          |           | Overhead |    |
14 | 0850 K | 18 Aug. | 35-08 N. | 152-08 E. | Unident. | - | - | - | - | 3D-Radar | Picked up by radar
   | at 24 mi. Closing.
15 | 1323 K | 18 Aug. | 35-08 N. | 152-08 E. | Unident. | - | - | - | - | 3D-Radar | Picked up by radar
   | at 26 mi. Closing.
16 | 0718 K | 21 Aug. | 35-45 N. | 151-24 E. | Unident. | - | - | - | - | 3D-Radar | Picked up by radar
   | at 6 mi. Closing.
17 | 0928 K | 21 Aug. | 35-46 N. | 151-24 E. | Unident. | - | - | - | - | 3D | 3D radar picked up
   | two strong radar
   | signals beamed on us,
   | giving large "pips".
18 | 1110 K | 22 Aug. | 35-50 N. | 152-22 E. | "Travis" | 3 mile | 500 ft. | North | 130 kts. | P | Disappeared in rain
   | squall.
19 | 1000 K | 24 Aug. | 36-00 N. | 152-37 E. | Unident. | - | - | - | - | 3D-Radar | Radar contact, 20
   | miles closing.

- 13 -

— page 135 —
(G) FLIGHT CONTACTS (CONT'D)

NO.   TIME      L.T.      TYPE        ALTITUDE   RANGE     EST COURSE   HOW CON-   REMARKS
      DATE      LONG.                                       SPEED        TACTED

20    1426 K    2-57 S    "Mavis"     500 ft.    3 miles   SD           SD         Sight coming
      24 Aug.   152-27 E.                                                SD-Radar.  out of cloud
                                                                                    bank.

21    0655 K    3-20 S    Unident.    -          -         -            SD-Radar   Radar contact - two
      26 Aug.   151-40 E.                                                           planes - one at 4 mi.
                                                                                    one at 12 mi.

22    1643 K    3-03 S    Unident.    4000 ft.   8 miles   Northwest    P          Headed for K.VIENG.
      31 Aug.   151-15.5 E.

23    1503 K    2-48 S    B24 ?       4000 ft.   Overhead  South        SD         Sighted overhead while
      1 Sept.   149-31 E.                                  200 kts.                investigating possible
                                                                                    smoke contact.

24    1005 K    1-30 S    "Betty"     1000 ft.   6 mi.     North        SD         Appeared to be float
      5 Sept.   152-38 E. or "Sally"                                                plane.

25    0700 K    6-09 S    Unident.    1500 ft.   8 miles   North        SD         Radar contact, 8 mile.
      7 Sept.   158-07 E.                                                           Plane not sighted.

26    0732 K    13-11 S   HUDSON      -          6 miles   SD           SD-Radar   Exh. recognition; in-
      7 Sept.   157-40 E. (Aust.)                                                   formed plane that 31L-
                                                                                    V31D3S was friendly
                                                                                    by sound informed
                                                                                    that plane was
                                                                                    friendly.

27    0632 K    13-40 S   -           -          -         -            SD-Radar   SD - Dry surface
      9 Sept.   157-40 E. (Aust.)                                                   SD - Night surface
                                                                                    SD - Radar contact, dry
                                                                                    T - Periscope.

- 14 -

— page 138 —
ENCLOSURE (A)
C-O-N-F-I-D-E-N-T-I-A-L

(L) RADIO:

     No casualties (two resistors burned out in the
     Kingsley). RDF loop does not function; will not
     receive any signals.

     D-5 Radio Direction Finder - with the removal of
     the D-5 radio direction finder loop from the radio
     direction finder receiver locality and its rein-
     stallation in the "A" frames for the purpose of
     copying submerged, which isolates it completely
     from any use as a radio direction finder, it is
     suggested that the D-5 radio direction finder
     receiver and power unit be removed from this ship.

     Reception of the Belconnen (Harman) schedules has
     been very good throughout this entire patrol.

     Reception of press schedules has not been very good
     during this patrol. WCX has not been copyable at
     any time. WHI/WPU has been copyable a few times.
     KFS/KMI has been very good when on the surface. The
     only fairly consistent press schedule (known) has
     been KGT4 Los Angeles.

     Reception and transmission on the 4235 series has
     been excellent. Have worked VED, VLI and VMR9 and
     at those times been able to obtain a receipt for
     traffic sent within a few minutes after the first
     call up. (Continued on following page)

- 17 -

— page 139 —
(L) RADIO: Cont'd

Mike Negat "Walkie Talkie" - When used with the
SILVERSIDES during exercises with the TUNA and
COUCAL it was very useful, both for recognition and
exchange of information, and in coordinated attack.
Regret we had no opportunity to test it against
a Jap convoy. Believe it would be very effective
if two subs equipped with "walkie talkie" were
assigned to the same area to work as a team.

It is recommended this equipment be adapted to
shift to the frequency used by our planes to provide
for plane-sub communication. This, too, should
result in a good deal more team work against the
enemy.

(M) RADARS:

ARC - This equipment utilizes the same antenna
as the SD radar. When radars were indicated on the
SD it would have been desirable to obtain data, but
this would mean securing the SD in the known presence
of planes.

SD - Invaluable; and fairly reliable. While
patrolling south of Truk, the SD was out of commiss-
ion for three days. We were sighted several times
and once bombed. The rest of the time planes were
picked up, frequently at 20 - 25 miles range.

SJ - Following repairs to the flooded mast, the
first day out, the SJ functioned well for six weeks.
Detailed report of performances submitted separately.

(N - O) SOUND GEAR AND SOUND CONDITIONS:

Sound gear functioned well. No density layers
noted. No special data on sound conditions.

(P) HEALTH, FOOD, AND HABITABILITY:

Good throughout patrol. Fresh frozen foods were
carried and proved very successful.

(Q) PERSONNEL:

Standards of combat efficiency for both officers
and men are higher than for any previous patrol.
This results mainly because of high morale of the
nucleus of old timers, i.e., men who have made
all six patrols.

- 18 -

— page 140 —
(R) MILES STEAMED - FUEL USED:

     Brisbane, Aust. to Area - - 2025 miles - 20,744 gal.
     In Area 5900 miles - 50,066 gal.
     Area to Brisbane - - - - - 1905 miles - 25,635 gal.

     Total 9830 miles - 96,445 gal.

(S) DURATION:

     Days on route to Area - - - - 9
     Days in Area - - - - - - - 37
     Days on route to Base - - - - 7
     Days Submerged - - - - - - 22

(T) FACTORS OF ENDURANCE REMAINING:

     Torpedoes 21
     Fuel 10,000 gal.
     Provisions 27 days
     Personnel 10 days

     Limiting factor this patrol. Orders to return to base.

(U) REMARKS:

     NONE.

                                 - 19 -

— page 141 —
ENCLOSURE (B)
C-O-N-F-I-D-E-N-T-I-A-L

CHRONOLOGICAL LIST OF DAILY NOON POSI-
TIONS, MILES STEAMED, AND FUEL USED.

Date         Noon         Miles        Fuel Used
             Position     Steamed

22 July      26-06 S.     149 miles    2007 gals.
             154-30 E.
23 July      22-05 S.     280 miles    2631 gals.
             154-31 E.
24 July      19-20 S.     219 miles    1549 gals.
             154-10 E.
25 July      16-03 S.     159 miles    928 gals.
             150-17 E.
26 July      15-13 S.     250 miles    2284 gals.
             152-08 E.
27 July      12-02 S.     257 miles    2381 gals.
             152-23 E.
28 July      9-01 S.      243 miles    2055 gals.
             151-01 E.
29 July      5-55 S.      183 miles    1694 gals.
             151-53 E.
30 July      3-25 S.      191 miles    1954 gals.
             155-10 E.
31 July      1-11 S.      238 miles    2654 gals.
             152-03 E.
1 August     0-44 S.      210 miles    2393 gals.
             148-26 E.
2 August     1-26 S.      206 miles    2114 gals.
             145-17 E.
3 August     1-22 S.      130 miles    871 gals.
             146-28 E.
4 August     0-02 N.      251 miles    2658 gals.
             150-00 E.
5 August     0-35 N.      244 miles    2843 gals.
             153-37 E.
6 August     1-25 N.      101 miles    636 gals.
             152-44 E.
7 August     4-53 N.      316 miles    2981 gals.
             154-02 E.
8 August     5-05 N.      144 miles    879 gals.
             154-25 E.
9 August     4-29 N.      152 miles    1020 gals.
             154-03 E.
10 August    4-52 N.      228 miles    1899 gals.
             152-14 E.
11 August    4-05 N.      148 miles    939 gals.
             151-49 E.
12 August    3-00 N.      161 miles    888 gals.
             151-45 E.

- 1 -

— page 142 —
ENCLOSURE (B)
C-O-N-F-I-D-E-N-T-I-A-L

CHRONOLOGICAL LIST OF DAILY NOON POSI-
TIONS, MILES STEAMED, AND FUEL USED

Date         Noon         Miles        Fuel Used
             Position     Steamed

13 August    3-00 N.      149 miles    890 gals.
             151-20 E.
14 August    3-56 N.      130 miles    864 gals.
             152-30 E.
15 August    3-59 N.      129 miles    735 gals.
             152-26 E.
16 August    3-04 N.      125 miles    819 gals.
             152-27 E.
17 August    2-57 N.      123 miles    971 gals.
             153-33 E.
18 August    3-38 N.      156 miles    1093 gals.
             152-03 E.
19 August    4-00 N.      134 miles    1344 gals.
             151-08 E.
20 August    4-50 N.      184 miles    1461 gals.
             150-56 E.
21 August    4-45 N.      108 miles    875 gals.
             151-02 E.
22 August    4-46 N.      125 miles    977 gals.
             152-24 E.
23 August    4-05 N.      210 miles    1794 gals.
             150-51 E.
24 August    2-58 N.      181 miles    1482 gals.
             152-13 E.
25 August    3-58 N.      169 miles    1272 gals.
             150-53 E.
26 August    3-10 N.      103 miles    959 gals.
             151-33.5 E.
27 August    0-14 S.      215 miles    2021 gals.
             150-55 E.
28 August    2-20 S.      163 miles    1309 gals.
             149-25 E.
29 August    2-49 S.      150 miles    1134 gals.
             149-34 E.
30 August    3-23 S.      116 miles    707 gals.
             151-01 E.
31 August    3-06 S.      74 miles     391 gals.
             151-15 E.
1 September  2-49 S.      136 miles    922 gals.
             149-34 E.
2 September  3-30 S.      138 miles    969 gals.
             151-12 E.
3 September  3-32 S.      58 miles     279 gals.
             151-10 E.

- 2 -

— page 143 —
ENCLOSURE (B)
C-O-N-F-I-D-E-N-T-I-A-L

CHRONOLOGICAL LIST OF DAILY NOON POSI-
TIONS, MILES STEAMED, AND FUEL USED.

Date             Noon             Miles            Fuel Used
                 Positions        Steamed

4 September      2-23 S.          180 miles        1740 gals.
                 149-20 E.

5 September      1-27.5 S.        234 miles        3025 gals.
                 152-56 E.

6 September      3-31 S.          227 miles        2819 gals.
                 155-31 E.

7 September      6-35 S.          267 miles        3311 gals.
                 158-43 E.

8 September      9-20 S.          250 miles        2534 gals.
                 159-24 E.

9 September      14-20 S.         352 miles        5715 gals.
                 157-35 E.

10 September     20-08 S.         341 miles        5066 gals.
                 157-04 E.

11 September     24-30 S.         295 miles        2879 gals.
                 155-26 E.

— page 144 —
FC5-8/A16-3
Serial 0144
CONFIDENTIAL

FIRST ENDORSEMENT to
CO GROWLER Report of
Sixth War Patrol.

From: Commander Submarine Squadron EIGHT.
To: Commander Task Force SEVENTY-TWO.
Subject: U.S.S. GROWLER (SS215), Sixth War Patrol;
         Report of.

1. The Sixth war patrol of the GROWLER was of
fifty-three days duration, of which thirty-seven days
were spent in the combat area. Only eight contacts were
made, two of which were on hospital ships and three were
on small vessels unworthy of torpedo attack. One attack
was made on an armed trawler which was towing a large
loaded barge, three torpedoes were fired but no hits
were made. All torpedoes ran normally and it is believed
that the misses were due to the fact that the draft of
the vessels was over estimated.

2. The GROWLER had no material casualties
while on patrol. The main storage battery is in poor
condition. It has been necessary to disconnect six
cells in the forward battery due to grounds. This
battery has jars with steel inserts and iron contamin-
ation is prevalent. During the present refit all cells
showing signs of iron will be flushed and new acid added.
No attempt will be made at this time to replace the six
defective cells in view of the time required and the fact
that the GROWLER is to return to the United States for a
navy yard overhaul upon completion of her next patrol.
The efficiency of the battery was ninety percent at the
end of the last patrol. By separate correspondence the
Bureau of Ships has been requested to have a battery
available at Mare Island in case complete renewal is
necessary.

3. The GROWLER will be given a regular normal
refit by the FULTON.

W. H. DOWNS.

SUBMARINE SQUADRON EIGHT
Fleet Post Office
San Francisco, California
13 September 1943

— page 145 —
FF12-15(72)/A16-3/Pk
Serial 0282

CONFIDENTIAL

2nd ENDORSEMENT to
CO GROWLER Report
of SIXTH War Patrol

From:         The Commander Task Force SEVENTY-TWO.
To :         The Commander in Chief, UNITED STATES FLEET.
Via :        (1) The Commander, THIRD FLEET.

Subject:      U.S.S. GROWLER (SS215) - SIXTH War Patrol;
              comments on.

              1. The Sixth War Patrol of GROWLER began on her de-
parture from BRISBANE 22 July 1943. Her first five days at
sea were spent in training while proceeding in company with
TUNA, SILVERSIDES, and COUCAL from BRISBANE to the LOUISIADES
where she refueled to capacity from COUCAL. She arrived in
her area north of NEW IRELAND on 30 July 1943, and the fol-
lowing day made an unsuccessful torpedo attack on an armed
trawler of about 1,500 tons which was towing a large barge
toward WEWAK. From 6 August to 26 August she was on the sub-
marine scouting line south of TRUK. During this period she
had numerous plane contacts but only three ship contacts.
Two of the latter were with patrol craft, and the third was
with a northbound hospital ship. When the scouting line was
discontinued, on 26 August, GROWLER proceeded to the vicin-
ity of NEW HANOVER where she spent ten days and had four
contacts: one with a medium freighter which she was unable
to close, one with a hospital ship, one with a gunboat which
passed out of range, and one brief night contact with an un-
identified ship which was lost in a rain squall. GROWLER
returned to BRISBANE via the bombing restriction lane east
of the SOLOMONS, arriving 12 September 1943, after 53 days
at sea.

              2. Morale is high in GROWLER despite the lack of
attack opportunities on this patrol.

              3. The patrol was remarkably free from material de-
rangements, which fact reflects credit on both GROWLER and
FULTON.

              4. No damage having been inflicted on the enemy,
GROWLER's Sixth War Patrol is not designated as "Successful"
for Combat Insignia Award.

DISTRIBUTION
On next page.

TASK FORCE SEVENTY-TWO,
Care of Fleet Post Office,
San Francisco, California,

15 September 1943.

- 1 -
[SIGNATURE: JAMES FIFE.]

— page 147 —
COMSOPAC FILE
A16-3/(11)
Serial 01792

C-O-N-F-I-D-E-N-T-I-A-L

[HANDWRITTEN: 14523]
[HANDWRITTEN: 80-43]
[HANDWRITTEN: 02036 (1)]
ab
[STAMP: RECEIVE]
2 OCT [STAMP: 1943] 9 OCT 1943
[STAMP: Com Task For]

SOUTH PACIFIC FORCE
OF THE UNITED STATES PACIFIC FLEET
HEADQUARTERS OF THE COMMANDER

3rd Endorsement on
CO USS GROWLER Report
of Sixth War Patrol.

From: The Commander South Pacific.
To : The Commander-in-Chief, United States Fleet.

Subject: U.S.S. GROWLER (SS 215), Report of Sixth
War Patrol - comments on.

1. Forwarded.

I.H. Mayfield,
Acting Chief of Staff.

Copy to: CTF 72
CSS 8
CSD 81
GROWLER

— page 149 —
[HANDWRITTEN: 2ND COPY]

SS215/A16-3
Serial 0161
[STAMP: S-DECLASSIFIED I-A-L]

U.S.S. GROWLER (SS215)
Care of Fleet Post Office,
San Francisco, California,
8 November 1943

From: The Commanding Officer.
To : Commander in Chief, United States Fleet.
Via : (1) The Commander Submarine Division
EIGHTY-ONE.
(2) The Commander Submarine Squadron EIGHT.
(3) The Commander Task Force SEVENTY-TWO.

Subject: U.S.S. GROWLER, Report of War Patrol
number Seven.

Reference: (a) Enclosure (A) to Cominch and CNO ltr.
FF1/A6-5 Serial 01529 of May 17, 1943.
(b) CTF-72 Conf. Ltr. FF12-15(72)/A16-3
of 4 June 1943.
(c) Comsubs 7th Flt. Conf. Ltr. FF24-71/
A16-3 Serial 0529 of 12 June 1943.

Enclosure: (A) Subject Report.

1. Enclosure (A), covering the seventh war
patrol of this vessel conducted in the SOLOMONS - BISMARCK
SEA AREA during the period 4 October 1943 to 7 November
1943 is forwarded herewith.

[SIGNATURE: A. F. Schade]
A. F. SCHADE.

[STAMP: DECLASSIFIED ART. 0445, OPNAVINST 5510.1C]
BY [HANDWRITTEN: OP-09B9C] DATE [HANDWRITTEN: 5/30/72]
[STAMP: DECLASSIFIED]

[HANDWRITTEN: 60373]

— page 150 —
C-O-N-F-I-D-E-N-T-I-A-L
(A) PROLOGUE:

     Returned to BRISBANE on 2 September and FULTON gave
     regular refit. The condition of the storage battery remains
     poor despite extensive work. (14 cells jumped out). All
     insulation readings of main generators less than point five
     megohms.

     On 4 October conducted training exercises, special radar
     tests, gun shoot and sound test. Proceeded to sea in
     company with U.S.S. COUCAL, BALAO, and SILVERSIDES.
     Conducted training exercises until 0300 L, 8 October.

(B) NARRATIVE:
9 October 1943:

0715 L    Met SC 729 and proceeded to TULAGI. Fueled to
          capacity (18,704 gals). During the day
          contacted numerous planes, not listed under
          contacts. During the fueling, air raid alarm
          sounded and GROWLER got underway; 10 minutes later
          all-clear sounded.

1615 L    Underway, with escort.

1845 L    Proceeded independently.

          Arrived on Station:
          Miles to station from BRISBANE, AUST. - 1697
          Fuel used enroute 10891
          Fuel remaining 92813

10 October 1943:

0717 L    PLANE CONTACT #1. Sighted bearing 105° T.,
          10 miles. Course North, probably a Liberator.
          Position: 6-42 S.
                     159-03 E.

0823 L    PLANE CONTACT #2. Sighted Jap "M", plainly
          marked, circling overhead, about 1000'.
          Position: 6-30 S.
                     158-47 E.

                                   -1-

                                                      ENCLOSURE ( )

— page 151 —
C-O-N-F-I-D-E-N-T-I-A-L

1032 L         PLANE CONTACT #3. Two planes, one seen
               clearly to be a "MAVIS". We were heavily
               strafed at 35°. Position: 5-20 S.
                                          158-20 E.

               Acquired a few more MG and cannon holes
               in the bridge. TDT aft partially shot
               away.

1425 L         PLANE CONTACT #4. One plane probably a
               B25, 10 miles away, course South.
               Position: 5-12 S.
                                          158-03 E.

12 October 1943:

               Entered WIDE BAY, NEW BRITAIN. Found
               nothing in the bay.

1100 L         PLANE CONTACT #5. Sighted large formation
               of about 50 planes, over land, heading
               South. Believed friendly, returning from
               raid on RABAUL.

1545 L         PLANE CONTACT #6. Sighted 1 single engine
               plane unidentified. Sighted heading for
               scope - 15° of scope out of water.

               Upon surfacing received reports of friendly
               planes downed at two positions. Full moon
               and clear sky. We searched all night in
               excellent visibility covering both positions
               thoroughly, but found no signs of the aviators.

13 October 1943:

0045 L         PLANE CONTACT #7. Submerged for single
               engine Jap float plane. Course South,
               flying low. Position: 5-20 S.
                                          152-37 E.

               Continued search for aviators.

14 October 1943:

1030 L         PLANE CONTACT #8. Sighted 1 "JAP", course
               30. Position: 7-30 S.
                                          152-28 E.

1400 L         PLANE CONTACT #9. Sighted large unidentified
               plane, course South. Position: 6-00 S.
                                          152-30 E.

                               - 2 -

                               ENCLOSURE (A)

— page 152 —
16 October 1943:
0650 L    PLANE CONTACT #10. Sighted single engine
          unidentified plane, course North.
          Position: 2-47 S.
                    152-59 E.
1225 L    PLANE CONTACT #11. Sighted 2 engine, unidentified
          plane, course 160° T.
          Position: 2-40 S.
                    152-58 E.

17 October 1943:
0723 L    PLANE CONTACT #12. Sighted one "PETE",
          course North, two miles. Position 1-00 S.
                                    150-38 E.
0821 L    SHIP CONTACT #1-2-3. Sighted smoke bearing
          067° T. Later identified as two Marus (about
          5000 T.) with one AKITSU class destroyer
          on course 210°, speed 12 knots. Closed at high
          speeds but nearest range 6000 yards. Unable
          to attack.
0936 L    PLANE CONTACT #13. Sighted 1
          providing air cover for the three ships.
          At this time plane headed at periscope and
          DD turned toward us increasing speed.
          At range of about 4000 yards, we turned
          away and joined the two Marus. No attack
          made on us.
1125 L    Targets out of sight to South, but plane
          still in sight.
1230 L    Explosions! Later reported that friendly
          planes attacked these ships, hitting one
          transport.

18 October 1943:
0145 L    SHIP CONTACT #4. Sighted smoke bearing 044°
          T. Commenced tracking; determined course
          215° T., speed 9 knots.
          Position: 0-35 S.
                    151-07 E.
0600 L    Submerged ahead for attack. Ship identified
          as 1900 T. catcher type, similar to NO
          IFU, page 255 ONI 208J, escorted by new
          SC, similar to our DE class.

-3-
THICK GULF (I)

— page 153 —
C-O-N-F-I-D-E-N-T-I-A-L

Having fired at identical ships twice
before with negative results, did not
attack. Escort passed so close we
could see only grey paint in low power,
but he did not detect us.

1517 L PLANE CONTACT #14. Sighted unidentified
plane, course 345°, 3 miles.
Position: 1-08 S.
150-37 E.

20 October 1943:
0845 L PLANE CONTACT #15. Sighted uniden-
tified plane (MAVIS), 8 miles, course
North. Position: 0-13 N.
152-41 E.

21 October 1943:
1450 L PLANE CONTACT #16. Radar Contact.
Position: 3-15 N.
152-27 E.

23 October 1943:
0050 L SHIP CONTACT #5. Patrolling, on #2 Aux.
engine, course 135° T. Sound picked
up high speed screws bearing 195° T.;
radar picked up target at 8850 yards
range. Target was then sighted. It
was seen to be very small. We ran with
the target at 10 knots but the range
closed rapidly. It was now apparent
it was a small patrol boat, probably a
sub-chaser, making about 18 knots on
course North. We headed directly away
to give minimum silhouette, and speeded
up, but he continued to close. At a
range of 3800 yards he sighted us and
headed directly at us. At range 3100
yards, still closing fast we dived. He
crossed over on an easterly course, made
one circle and then proceeded north with-
out making any attack.

Position: 5-19 N.
151-46 E.

- 4 -
ENCLOSURE (A)

— page 154 —
C-O-N-F-I-D-E-N-T-I-A-L
26 October 1943:

               Condition of main generators and storage
               battery has become progressively worse.
               Two generators insulation reads point
               one megohm; other two read point two
               and point four megohms. Main storage
               battery ground open circuit 30V; when
               charging 160V ground. Unable to trace
               this ground or reduce it. Believe it
               is accumulation of numerous cells which
               have zero insulation reading between
               element and steel insert in the jars.
               Some of the jars must open during heat
               and high voltage of the charge.

1905 L         Reported conditions to CTF-72.

2145 L         Fire in main control cubicle. Lost all
               power. Traced casualty to burned out
               excitation circuit on both starboard
               generators. Began withdrawing from
               TRUK on one port engine.

27 October 1943:

0230 L         Received CTF-72 message telling us to
               head towards Pearl.
0800 L         Submerged to make repairs.
1400 L         Temporary repairs effected permitting use
               of starboard generators with caution.
               During part of the time repairs were
               being made it was necessary to pull all
               main power and balance.

28 October 1943:

               Left station - miles steamed on station - 2601.

29 October 1943:

0000 Z         Passed to op control CTF-17. Task unit
               designation 17.3.2.

                                   - 5 -
                                                       ENCLOSURE (A)

— page 155 —
C-O-N-F-I-D-E-N-T-I-A-L

5 November 1943:

0715 W         PLANE CONTACT #17. Sighted friendly PBY -
               no recognition. Course 250° (T), distant
               20 miles. Position: 18-53 N.
                                   167-56 W.

1030 W         PLANE CONTACT #18. Sighted friendly
               Flying Fortress - no recognition. Course
               070° (T), distant 12 miles.
               Position: 19-03 N.
                          166-20.5 W.

1117 W         PLANE CONTACT #19. Sighted friendly PBY -
               no recognition. Course 070° (T), distant
               14 miles. Position: 19-04.5 N.
                                   166-12 W.

7 November 1943:

               Met SC 983 - escorted into Pearl.

                                   - 6 -
                                                       ENCLOSURE (A)

— page 156 —
C O N F I D E N T I A L
(C) WEATHER:
    No Comment.

(D) TIDAL INFORMATION:
    No Comment.

(E) NAVIGATIONAL AIDS:
    No Comment.

(F) SHIP CONTACTS:
    On separate sheet.

(G) AIRCRAFT CONTACTS:
    On separate sheet.

(H) ATTACK DATA:
    None.

(I) MINES:
    No Comment.

(J) ANTI-SUBMARINE MEASURES AND EVASION TACTICS:
    No Comment.

(K) MAJOR DEFECTS AND DAMAGE:

    1. Main Storage Battery - Failed to respond to
       extensive treatment by FULTON during refit.
       Fourteen cells permanently jumped out of
       circuit, several others with low voltage,
       low capacity, high iron content. Renewal
       at the forthcoming Navy Yard overhaul is
       expected. Battery grounds remain excessive.

    2. Main Generators - Insulation resistance on all
       main generator armatures less than one megohm
       at start of patrol, despite diligent and
       painstaking effort on the part of FULTON during
       refit. Throughout the patrol the insulation
       resistance steadily decreased. Upon leaving
       patrol station the readings were:
           #1 - - - 0.3 megohm
           #2 - - - 0.1 megohm
           #3 - - - 0.2 megohm
           #4 - - - 0.1 megohm

                                - 7 -
                                ENCLOSURE (A)

— page 157 —
C-O-N-F-I-D-E-N-T-I-A-L

(K) MAJOR DEFECTS AND DAMAGE (CONT'D):

     Reinsulation and rewinding at the forth-
     coming Navy Yard overhaul is expected.

     3. Main Control Cubicle - An electrical fire
        at the starboard main generator excitation
        terminal block within the cubicle damaged
        the connection block, destroyed wiring
        leading to and from the block, and tempor-
        arily rendered #1 and #3 main generators
        useless. It is considered that this fire
        resulted from the high grounds obtaining
        on the main storage battery and main gen-
        erator armatures. Temporary repairs were
        effected which permit the use of all
        generators, with caution.

(L) RADIO:

     No casualties; reception good at all times.

(M) RADAR:

     SJ - All tubes of the IF stage of the range
     indicator failed. Tubes renewed and set
     functioned properly.

(N) SOUND GEAR AND SOUND CONDITIONS:

     Sound gear functioned well at all times; no
     unusual sound conditions noted.

(O) DENSITY LAYERS:

     None noted. (Do not believe bathythermograph
     is installed properly).

(P) HEALTH, FOOD, AND HABITABILITY:

     Good at all times.

(Q) PERSONNEL:

     Performance excellent. Many "old-timers" remain.
     Morale excellent at all times.

                                   - 8 -

                                                      ENCLOSURE (A)

— page 158 —
C-O-N-F-I-D-E-N-T-I-A-L

(R) MILES STEAMED - FUEL USED:
BRISBANE to area - - - - - 1697 mi. - - - 19891 gal.
In area 2601 mi. - - - 22941 gal.
Area to PEARL HARBOR - - - 3074 mi. - - - 36872 gal.

(S) DURATION:
Days enroute to area - - - - 6
Days in area - - - - - - - 17
Days enroute to PEARL - - - 12
Days submerged - - - - - - 15

(T) FACTORS OF ENDURANCE REMAINING:
| Torpedoes | Fuel | Provisions | Personnel Factor |
|---|---|---|---|
| 24 | 33,000 gal. | 40 days | 20 days |

Limiting factor this patrol - The progressively
bad conditions of the main storage battery and
the main generators, with excessive grounds
caused the patrol to be cut short.

(U) REMARKS:
The condition of the battery and the main gen-
erators was apparent prior to departure on patrol.
By the time we had reached station two main
generators had insulation readings about .1 megohm
with the other two at .2 and .4 megs. It was
decided to keep engine hours to a minimum, except
to gain contact or when chasing. Day patrolling
was conducted within 20 miles of TRUK using high
periscope; patrolling at night, on #2 aux.
Battery grounds continued to increase, partic-
ularly on high voltage during charge.
Conditions were reported to CTF-72 when it was
no longer safe to charge batteries in enemy waters.
Following the fire in the cubicle caused by
excessive grounds, it was decided to keep the
battery full with minimum voltage and to isolate
all generators to keep the grounds at a minimum.
At no time were generators operated in parallel.
With this procedure no further difficulties were
experienced.

- 9 -
ENCLOSURE (A)

— page 159 —
C-O-N-F-I-D-E-N-T-I-A-L
(F) SHIP CONTACTS
NO.
TIME
DATE
LAT.
LONG.
TYPE
INITIAL
RANGE
COURSE
SPEED
HOW CON-
TACTED
REMARKS

1-2-3
0821 L
17 Oct.
0-58 S.
150-41 E.
1 DD
2 - 5,000
ton M.RUS
8 mile
210° T.
12 kts.
P
One S.SHIO class DD.
Two 5,000 ton M.RUS.
range 6000
yds. 1 plane escort.

4
0145 L
18 Oct.
0-35 S.
151-07 E.
1,900 ton.
One SC.
10 mile
215° T.
9 kts.
SM
Tracked until dawn;
submerged ahead, but
too small to attack.

5
0050 L
23 Oct.
5-19 N.
151-46 E.
One SC.
8350 yds.
3° T.
18 kts.
Sound,
Radar
Sighted us and closed
at high speed to 3100
yds. forcing us to
dive. Too small to
fire a torpedo.

[HANDWRITTEN: - 10 -]

ENCLOSURE (A)

— page 160 —
(C-O-N-F-I-D-E-N-T-I-A-L)
NO. | DATE | LAT. | LONG. | (G) AIRCRAFT | TYPE | ALT. | RANGE | COURSE | SPEED | HOW CON- | REMARKS
    | TIME |      |       | CONTACTED    |      |      |       | SITED  |       | TACTED   |
1 | 0717 L | 6-12 S | 159-03 E | B-24 | 1000' | 12 mi. | 180° T. | 200 kts. | SD | No attack.
  | 10 Oct. |        |          |      |       |        |         |          |    |
2 | 0823 L | 6-50 S | 158-47 E | "ZEKE" | 1000' | 5 mi. | Circling | 250 kts. | SD | Heavily strafed while
  | 10 Oct. |        |          |        |       |       | overload. |          |    |   submerging - added a
  |   few more holes to
  |   bridge.
3 | 1032 L | 6-28 S | 158-28 E | "MAVIS" | 500' | 2 mi. | 250° T. | 200 kts. | SD | -
  | 10 Oct. |        |          |         |      |       |         |          |    |
4 | 1425 L | 6-12 S | 158-03 E | B-25 | 1000' | 10 mi. | 160° T. | 200 kts. | SD | -
  | 10 Oct. |        |          |      |       |        |         |          |    |
5 | 1100 L | "WIDE BAY, | | Formation of about 50 large | 270° T. | 300 kts. | P | -
  | 12 Oct. | NEW BRITAIN" | | planes headed South, | 200' | 2 mi. |         |          |    |
  |        |              | | friendly from R.A.B.U.I. |       |         |          |    |
6 | 1545 L | WIDE BAY, | | Unident. | 200' | 2 mi. | 270° T. | 300 kts. | P | Single engine fighter
  | 12 Oct. | NEW BRITAIN | |          |      |       |         |          |    |   search.
7 | 0045 L | 5-28 S | 152-39 E | Single eng. | 200' | 4 mi. | 160° T. | 200 kts. | SN | A/S night search.
  | 13 Oct. |        |          | Jap float |       |       |         |          |    |
8 | 1030 L | 6-7.5 S | 152-28 E | "HAP" | 1000' | 2 mi. | 030° T. | 200 kts. | P | -
  | 14 Oct. |        |          |       |       |       |         |          |    |
9 | 1400 L | 6-06 S | 152-30 E | Unident. | 1000' | 4 mi. | 160° T. | 200 kts. | P | -
  | 14 Oct. |        |          |          |       |       |         |          |    |

- 11 -
ENCLOSURE (A)

— page 161 —
(G) AIRCRAFT CONTACTS (CONT'D)

NO | TIME | DATE | LAT. | LONG. | TYPE | ALT. | RANGE | COURSE | SPEED | HOW CON- | REMARKS
   | TACTED   |
10 | 0650 L | 16 Oct. | 2-47 S. | 152-59 E. | Jap float | 1000' | 7 mi. | 160° T. | 200 kts. | F |
   |      |         |         |         | plane. |      |       |        |        |          |
11 | 1225 L | 16 Oct. | 2-40 S. | 152-59 E. | Jap 2 engine | 500' | 6 mi. | 160° T. | 150 kts. | F |
   |      |         |         |         | bomber |      |       |        |        |          |
12 | 0723 L | 17 Oct. | 3-00 S. | 150-38 E. | "PETE" | 500' | 2 mi. | 010° T. | 150 kts. | P | air cover for 3 ship
   | convoy. Possibly
   | same as above.
13 | 0936 L | 17 Oct. | 0-57 S. | 150-46 E. | "PETE" | 500' | 2 mi. | Circling |        | P |
14 | 1517 L | 18 Oct. | 1-06 S. | 150-37 E. | Unidont. | 500' | 8 mi. | 000° T. | 250 kts. | P |
15 | 0845 L | 20 Oct. | 0-15 N. | 152-41 E. | Unidont. | 500' | 8 mi. | 000° T. | 180 kts. | P |
   |      |         |         |         | (M.VIS) |      |       |        |        |          |
16 | 1450 L | 21 Oct. | 3-15 N. | 152-27 E. |        |      |       |        |        | SD | Radar Contact.
17 | 0715 W | 5 Nov. | 15-53 N. | 167-56 W. | PBY |        | 20 mi. |        | 193 kts. | SD | Not sighted by plane
   | although radar range
   | abeam - 10 miles.
18 | 1030 W | 5 Nov. | 15-03 N. | 166-20.5 W | Flying Fort. | 1000' | 12 mi. | 070° | 200 kts. | SD | Not sighted even after
   | flare.
19 | 1117 W. | 5 Nov. | 15-04.5 N | 166-12 W. | PBY | 1000' | 14 mi. | 070° | 150 kts. | SD | Not sighted.

- 12 -
ENCLOSURE (A)

— page 162 —
FF12-10/A16-3(8)/(16) SUBMARINE FORCE, PACIFIC FLEET

Serial 01679 Care of Fleet Post Office,
San Francisco, California,
CONFIDENTIAL 13 November 1943.

FIRST ENDORSEMENT to
GROWLER Report of
Seventh War Patrol.

COMSUBSPAC PATROL REPORT NO. 307
U.S.S. GROWLER - SEVENTH WAR PATROL.

From: The Commander Submarine Force, Pacific Fleet.
To: The Commander-in-Chief, United States Fleet.
Via: The Commander-in-Chief, U. S. Pacific Fleet.

Subject: U.S.S. GROWLER (SS215) - Report of Seventh War Patrol.
(4 October to 7 November 1943).

1. The seventh war patrol of the GROWLER was conducted in the
operational areas of the Commander Task Force Seventy-Two.

2. The GROWLER was forced to leave the area early due to
material casualties and a poor storage battery.

3. Good area coverage was conducted during the short time in area.
No attacks were made.

4. This patrol is not considered successful for Combat Insignia
Award.

C. A. LOCKWOOD, Jr.

DISTRIBUTION:
(Complete Reports)
Cominch (5) Subad, MI (2)
CNO (5) ComsubspacSubordcon (3)
Cinpac (6) All Squadron and Div.
Intel.Cen.Pac. Commanders, Subspac (2)
Ocean Areas (1) All Submarines, Subspac (1)
Conservpac [SIGNATURE: J. A. Woodruff, Jr.]
(Adv.Base Plan Unit (1) J.A. WOODRUFF, Jr.
Sinelant (2) Flag Secretary. [HANDWRITTEN: EHW]
Comsublent (8)
S/M School, NL (2) NOTE: THIS REPORT WILL BE DESTROYED PRIOR
Comsopac (2) TO ENTERING PATROL AREAS.
Comsowespac (1)
Comsubsowespac (2)
CTF 72 (2)
CTF 16 (1)
Comsubspac (20)

— page 164 —
[HANDWRITTEN: 2nd COPY]

SS215/A12
Serial: 2-44
[STAMP: DECLASSIFIED][HANDWRITTEN: I-A-L]
U.S.S. GROWLER (SS215)
Care of Fleet Post Office,
San Francisco, California,
18 April 1944.

From : The Commanding Officer.
To : The Commander-in-Chief United States Fleet.
Via : (1) The Commander Submarine Division EIGHTY-ONE.
(2) The Commander Submarine Squadron EIGHT.
(3) The Commander Task Force SEVENTEEN.

Subject: U.S.S. GROWLER (SS215), Report of War Patrol Number
Eight.

Reference: (a) CominchPacFlt Conf. Ltr. 2CL-44, Serial 03
dated 1 January 1944.

Enclosure: (A) Subject Report.

1. Enclosure (A), covering the eighth War Patrol of this
vessel conducted in Area 11A during the period 21 February 1944,
to 16 April 1944, is forwarded herewith; in accordance with refer-
ence (a).

[SIGNATURE: A. F. Schade]
A. F. SCHADE.

[STAMP: DECLASSIFIED ART. 0445, OPNAVINST 5510.1C]
[HANDWRITTEN: BY OP-09B9C DATE 5/30/12]
[STAMP: DECLASSIFIED]

73097
[STAMP: FILMED]

— page 165 —
(A) PROLOGUE:
On 18 November 1943, GROWLER began Navy Yard overhaul at Hunter's
Point, California. Major items of repair include renewal of all battery
jars, installation of skewed slot main motors, repairs to all main
generators, installation of SJI-PPI radar, JP sound, Berkeley trim
pump, raising #1 periscope to conning tower and rebuilding the bridge
using BPS.

Arrived Pearl Harbor, 8 February 1944, following post repair
trials, sound test, deperming. Conducted training and tests at Pearl.
Departed 21 February 1944 for patrol with stop at Midway.

(B) NARRATIVE:

25 February 1944:

1030 N. Arrived Midway. Effected repairs to both auxiliary engines,
Main Motor bearings, and storage battery grounds caused by
opening of the jars due to heavy seas.

26 February 1944:

0800 M. Departed Midway.

28 February 1944:

#1 Auxiliary Engine out of commission for the remainder of
the patrol.

3 March 1944:

0140 K. In extremely rough weather. A tremendous wave carried over
the bridge. Much water in all compartments from control to
after engine room.

Cruising in heavy weather with #4 MBT filled with fuel is very
troublesome, flooding the main induction frequently, and
causing solid water to come through the conning tower hatch
almost continuously. 1 engine speed - 5.5 knots; 2 engine
speed - 8.5 knots.

2000 K. #4 Main Motor bearing burned out.

4 March 1944:

Seas mountainous. Port shaft still out of commission. Speed
about four knots. Battery acid spilled, causing full voltage
grounds.

0845 K. Decided to submerge for a few hours to work on casualties.

5 March 1944:

0800 K. Port shaft back in commission.

- 1 -
ENCLOSURE (A)

— page 166 —
6 March 1944:
1045 K. Taking continuous solid seas over the bridge. Submerged
for three hours.

10 March 1944:
1900 I. Arrived in area, three days late; delay caused by casualty
to Main Motor bearing and unbroken stormy weather and heavy
seas.

11 March 1944:
Periscope observations difficult at any speed.

12 March 1944:
Patrolled NE sector of AMAMI O SHIMA.

13 March 1944:
Patrolled passage between AMAMI O SHIMA and YOKOATE.
0857 I. CONTACT #1. Sighted small patrol craft, SC type, base course
350° T., speed nine knots.

14 March 1944:
Patrolled passage east of TORI SHIMA.
2330 I. CONTACT #2. In bright moonlight sighted ship on the hor-
izon, course south, speed 10 knots. Radar out of commission.
Began end run to obtain attack position. While still at
extreme range of visibility the ship turned toward us and
started shooting. We turned away at 13 knots, but the
target now seen to be a large destroyer, gained rapidly.
With the shells falling too close for comfort, submerged.
Prepared for a "down the throat" shot, but we were unable
to hold periscope depth, so went deep. He dropped depth
charges over a period of an hour.

15 March 1944:
0415 I. Came to periscope depth. Could see nothing, although his
pinging sounded close.
0430 I. Visibility closed in. Surfaced to open out, at high speed.
0445 I. CONTACT #3. With one destroyer astern sighted two more des-
troyers and two sub-chasers close aboard on starboard bow -
about 3,000 yards. We began field running. Felt sure the
first DD had detected us by radar. From 0740 to 0830 they
dropped numerous depth charges in the area we had just
vacated, about 8 - 10 miles south. During the day several
more DC barrages were heard to south of us.

- 2 -
ENCLOSURE (A)

— page 167 —
1815 I. Heavy barrage of DC's much closer; probably 2 - 3 miles
        away. Poor visibility; nothing in sight close.

16 March 1944:

0329 I. CONTACT #4. Sighted patrol vessel at least five miles
        distant. Felt sure we could not be sighted, but he turned
        toward us challenging with a searchlight. Looks like
        radar again. We opened at high speed and lost contact in
        the dark.

0600 I. Submerged.

0640 I. Several DC's, loud but not close.

0650 I. CONTACT #5. Sighted patrol boat, PY type conducting pinging
        search at slow speed. Took evasive courses but at 0755
        were forced deep while he passed over without detecting us.

17 March 1944:

0410 I. CONTACT #6. Rain squall lifted and we sighted a sub-chaser
        about 2000 yards distant. Submerged for 30 minutes. For
        the first time enemy patrol not alert.

        We have so much topside noise have decided to clear to
        eastward to work in superstructure. The large pan which
        housed the towing pennant has carried away. Will also
        sound off to clarify area assignment.

18 March 1944:

0330 I. Sent #1 message to Comsubspac.

        Rough weather prevented topside work.

19 March 1944:

1410 I. CONTACT #7. Sighted smoke bearing 270° T.; developed to be
        5 - 6 ship convoy on course 030° T., speed 8 knots. Nearest
        range about 10,000 yards. Trailed at high speed to chase
        after dark.

1605 I. PLANE CONTACT #1. Sighted plane (Pete) headed toward per-
        iscope.

1705 I. Lost sight of convoy. Their route is along the 100 fathom
        curve passing up the east side of AMAMI O SHIMA.

1900 I. Surfaced with convoy about 20 miles ahead, and started
        chase. (Radar back in commission).

        No further contact during the night. Believe they turned
        west. toward TOKARA GUNTO.

                                - 3 -

                                ENCLOSURE (A)

— page 168 —
20 March 1944:
Tried to enter passage south of KIKAI JIMA-but found we
had been set east 20 miles.

22 March 1944:
0917 I. CONTACT #8. Sighted two small Marus, possibly 2000 T. each,
course 020°, speed 7 - 8 knots, close to shore. Unable to
close; nearest range 7,000 yards.

1200 I. PLANE CONTACT #2. CONTACT #9. Sighted one "Pete" patrolling.
Sighted a patrol boat heading southwest between TOKUNO and
AMAMI O SHIMA.

1350 I. CONTACT #10. Sighted one small AK, 3,000 T. course 030°,
speed eight knots. Closed for attack.

1443 I. Fired four torpedoes aft, range 1700 yards, 2° divergent
spread, depth set at 9 feet. Observed first wake which
appeared to pass under the bow; others not seen. One
possible hit at torpedo run of 1 minute - 36 seconds.
Periscope ducked. Sound reported screws; went deep.

1445 I. Two patrol boats, not previously sighted, started depth
charge attack.

1604 I. After 30 minutes of relative quiet started up to periscope
depth; at 170' depth charges started banging all around.

1700 I. Periscope depth. Four patrol boats in sight. Kept heading
away but they trailed right along.

1929 I. Surfaced about nine miles from the beach. Nearest patrol
boat sighted astern about 5 miles. AMAMI O SHIMA sparkled
with blinking red lights, signal lights and an occasional
searchlight. At the time we thought they had picked us up,
but apparently they were submarine warning lights. Opened
at high speed. The red lights were still visible at 25 miles.

23 March 1944:
PLANE CONTACT #3. Throughout the day we were escorted by
one or more "Pete" planes plus patrol craft. We remained
on evasive course, but at

1815 I. The search culminated in a depth charge attack. At this
time visibility was very poor but nothing was sighted close,
so remained at periscope depth.

Not much chance to look for shipping.

25 - 27 March 1944:
Patrolled to westward in continued rough seas, overcast
stormy weather. Visibility 0 - 5 miles. By E.P. headed
- 4 -
ENCLOSURE (A)

— page 169 —
down the west coast of AMAMI O SHIMA, but first land fix
showed us to be passage between AMAMI O SHIMA and KIKAI.

27 March 1944:

2330 I. CONTACT #11. In typhoon, sighted SC patrol boat about
400 yards abeam. Turned away and tried to dive. Seas
prevented us from getting under for 4 or 5 minutes (but
which seemed much longer). Patrol boat echo ranging, but
seas prevented him from closing, and sound conditions
were bad.

Radar had been operating but was of no value against small
targets, with wave pips to 6,000 yards. We finally got
under 20,000# heavy plus negative. Caught it at 370',
20° rise bubble, full speed with a bubble in safety. The
patrol boat made a poor search and we soon lost him. Our
submerged speed was probably better than his surface speed.

28 March 1944:

0145 I. Surfaced.

1 April 1944:

0215 I. CONTACT #12. In passage between YOKOATE and AMAMI O SHIMA
sighted a vessel patrolling, with a very bright light.
Closed cautiously. No indication on radar. Tried to get
ahead to the northward. The ship suddenly started to
close and gain in bearing. We went ahead 18 knots. It
continued to draw ahead. We turned to the south. Starting
to get strong positive radar interference. Heading south
the range opened out at first, but soon the ship began to
close again, with bearings drawing ahead to south.

Ranges were judged by the light which was well on our side
of the horizon the entire time. The ship was capable of
at least 20 knots and apparently was chasing us with a
radar detector. (It was noted that just prior to this the
Flying Fish was fired at and sounded off by radio in near
vicinity).

From this date, radar interference was picked up every
night. At times it was so strong it might even have been
an attempt at jamming of our radar. Its approximate bear-
ing was usually from TOKARA JIMA. We used our own radar
sparingly.

1550 I. CONTACT #13. Sighted SC type patrol boat bearing 046° T.,
distant 4 miles, on course 180°, speed 8 knots. Disappeared
to southward.

2 - 5 April 1944:

Very rough weather, but remained north of AMAMI O SHIMA,
which still appears to be most likely spot for traffic.

- 5 -

ENCLOSURE (A)

— page 170 —
6 April 1944:
Departed area. Sent message #2 to Comsubspac.

8 - 9 April 1944:
Patrolled to west of IO KITA JIMA.

10 April 1944:
1127 K. CONTACT #14. Sighted through #1 periscope while on sur-
face, a small ship. Closed submerged. Battle Surfaced.
Ship identified as 250 T. Naval Auxiliary, patrolling.
Set him on fire and sank him by gunfire.

15 April 1944:
1850 LM PLANE CONTACT #5. Forced down by unidentified plane which
turned to head at us (20 minutes after sunset).

16 April 1944:
0850 LM PLANE CONTACT #6. Pulled flare and dived for unidentified
plane.
1845 LM PLANE CONTACT #7. Fired rocket and dived for unidentified
plane.

17 April 1944:
1610 M Rendezvoused with REMY, escort.

- 6 -
ENCLOSURE "A"

— page 171 —
(C) WEATHER:
Throughout the entire patrol, the weather was very stormy, with
rough seas. Periscope observations could be made only at high speed,
except for a few days. On one occasion in a typhoon, a patrol boat
contacted us at a range of about 400 yards and evidently considered
it too rough to attack.

(D) TIDAL INFORMATION:

Currents were strong and unpredictable.

(E) NAVIGATIONAL AIDS:

SATSUKO ZAKI Light burning with normal characteristics. Other
lights sighted occasionally.

- 7 -

ENCLOSURE "A"

— page 172 —
(F) SHIP CONTACTS:

No. | Time | Date | Lat. | Long. | Type | Initial Range | Est. Course | Speed | How Contacted | Remarks
--- | ---
1 | 0857 I. | 13 March | 28-51 N. | 129-22.5 E. | SC Patrol Boat | 8,000 | 350° | 9 K. | P | NONE
2 | 2330 I. | 14 March. | 27-46 N. | 127-32 E. | Large DD | 14,000 | 180° | 10 K. | SN | Detected while attempting to gain attack position. Attacked us by gun fire and depth charges.
3 | 0445 I. | 15 March | 27-45 N. | 127-30 E. | 2 small DD | 3,000 | 025° | 10 K. | SN | While evading the DD above ran into this search group. A/S measures continued all day.
  |     |         |         |         | 2 Patrol | Boats    |       |         |       |     |
4 | 0329 I. | 16 March | 28-45 N. | 127-15 E. | PY type Pat- | 12,000 | Var. | 15 K. | SN | Detected at same time enemy sighted. Challenged us by searchlight, then conducted search while we evaded on surface.
  |     |         |         |         | rol vessel |       |         |       |     |
5 | 0650 I. | 16 March | 28-56 N. | 127-10 E. | PY type Pat- | 3,000 | Var. | 8 K. | P | Possibly same as above. Depth charged just prior to sighting, at estimated range 2 - 3,000 yards.
  |     |         |         |         | rol vessel |       |         |       |     |
6 | 0410 I. | 17 March | 28-56 N. | 128-14 E. | SC - 1 large | 2,000 | 000° | 8 K. | SN | Patrol boat appeared close aboard as rain squall lifted. Not detected.
  |     |         |         |         | patrol boat |       |         |       |     |
7 | 1410 I. | 19 March | 28-34 N. | 128-58 E. | 5-6 ship | 18,000 | 025° | 9 K. | P | Unable to close range, air screen. Chased at night but no further con-
  |     |         |         |         | convoy |       |         |       |     | tact. Followed 100 fathom curve
  | up east side of AMAMI O SHIMA.
8 | 0917 I. | 22 March | 28-04 N. | 129-33 E. | 2 small AK's | 10,000 | 020° | 3 K. | P | Unable to close.
9 | 1200 I. | 22 March | 27-58 N. | 129-14 E. | Patrol Boat | 14,000 | 315° | 8 K. | P | Patrolling sound search.

ENCLOSURE "A"

— page 173 —
(F) SHIP CONTACTS (CONT'D):

| No. | Time | Lat. | Type | Initial | Est. | How Con- | Remarks |
|---|---|---|---|---|---|---|---|
| | Date | Long. | | Range | Course | tacted | |
| | | | | | Speed | | |
| 10 | 1350 I. | 28-03 N. | 3,000 T. AK | 12,000 | 030° - 8 K. | P | Fired 4 torpedoes aft. One Possible |
| | 22 March | 129-21 E. | | | | | hit. 2 patrol boats depth charged - |
| | | | | | | | 4 patrol boats sighted later. |
| 11 | 2330 I. | 28-55 N. | SC Patrol | 400 | 080° - 4 K. | SN | In typhoon, patrol boat sighted |
| | 27 March | 129-30 E. | Boat | | | | very close aboard. Too rough for |
| | | | | | | | either to attack altho he tried to |
| | | | | | | | maintain sound contact. |
| 12 | 0215 I. | 28-37 N. | Radar Pat- | 8,000 | Var. 10-20 K. | SN | Sighted bright light on patrol craft |
| | 1 April | 129-13 E. | rol craft | | | | Believe he maintained contact on us |
| | | | | | | | by means of radar detector - strong |
| | | | | | | | interference. Unable to evade |
| | | | | | | | 18 knots. Evaded sub- |
| | | | | | | | merged. |
| 13 | 1550 I. | 28-53 N. | SC patrol | 8,900 | 180° - 10 K. | [UNCLEAR: SN] | NONE |
| | 1 April | 129-30 E. | boat | | | | |
| 14 | 1127 K. | 24-28 N. | 250 T. Aux. | 14,000 | Var. 0 - 6 K. | SD-P | On surface, contacted by high |
| | 10 Apr. | 144-42 E. | vessel | | | | periscope watch. Sank by gunfire. |

- 9 -
ENCLOSURE "A"

— page 174 —
(G) AIRCRAFT CONTACTS:

No. | Time | Lat. | Type | Range | Est. Course | How Con- | Remarks
    | Date | Long. |      |       | Speed       | tacted   |
----|------|-------|------|-------|||
1   | 1604 I. | 28-30 N | "Pete" | 2 mile | Patrolling | P | Air cover for convoy.
    | 19 March | 129-58 E |      |       |             |          |
2   | 1200 I. | 27-51 N | "Pete" | 3 - 15 mile | Patrolling | P | NONE
    | 22 March | 129-74 E |      |       |             |          |
3   | 1600 I. | 29-40 N | 2 engine | 6 mile | 290° - 150 K. | P | Plane (1 or more) in sight through-
    | 23 March | 130-07 E | (unident.) |       |             |          | out the day on A/S search.
4   | 0715 I. | 25-35 N | Unident. | 4 mile | 340° - - - | SN | NONE
    | 9 April | 140-55 E |      |       |             |          |
5   | 1850 LM | 16-50 N | Unident. | 5 mile | 0° - 200 K. | SD | Forced down.
    | 15 April | 167-53 E |      |       |             |          |
6   | 0850 LM | 16-07 N | Unident. | 5 mile | 100° - 150 K. | SD | Pulled flare and dived.
    | 16 April | 170-14 E |      |       |             |          |
7   | 1845 LM | 14-37 N | Unident. | 5 mile | 100° - 150 K. | SD | Fired rockets and dived.
    | 16 April | 170-30 E |      |       |             |          |

- 10 -
ENCLOSURE "A"

— page 175 —
(H) ATTACK DATA:
U.S.S. GROWLER - Torpedo Attack #1 - Patrol #8.
Time: 1442 (B) - Date: March 22, 1944 - Lat: 28-03 N. Long: 129-21 E.

Target Data - Damage Inflicted

Description: Single ship, type unknown, estimated 3,000 tons,
             periscope contact, good visibility.
Ships Sunk: None.
Ships Damaged: One possible hit.
Damage Determined by: Heard explosion at 1m - 36s after firing
                      #10 tube.
Target draft: Est. 12'. Course: 030° (T). Speed: 8 knots.
Range: 1,750 yards.

Own Ship Data

Speed: 2 knots. Course: 139° (T). Depth: 65'. Angle: 1° rise.

Fire Control and Torpedo Data

Periscope approach.

|             | #7        | #8        | #9        | #10           |
|:|:|:|:|:|
| Tubes Fired | 90s.      | 92s.      | 94s.      | 97s.          |
| Track Angle | 175°      | 176°      | 183°      | 182°          |
| Gyro Angle  | 9'        | 9'        | 9'        | 9'            |
| Depth Set   | High      | High      | High      | High          |
| Power       | Miss      | Miss      | Miss      | Possible hit. |
| Hit or Miss | Unknown   | Unknown   | Unknown   | Unknown       |
| Erratic     | XIV-3-A   | XIV-3-A   | XIV-3-A   | XIV-3-A       |
| Mk.Torpedo  | 26036     | 26628     | 40747     | 40738         |
| Ser. number | VI-4      | VI-4      | VI-4      | VI-4          |
| Mk.Exploder | 18064     | 12723     | 1588      | 1744          |
| Ser. number | Contact   | Contact   | Contact   | Contact       |
| Actuation Set | Miss      | Miss      | Miss      | Possible contact. |
| Actuation Actual | XVI-1     | XVI-1     | XVI       | XVI           |
| Mk. Warhead | 1985      | 9818      | 2994      | 2923          |
| Ser. number | TPX       | TPX       | TPX       | TPX           |
| Explosive   | 0S        | 8S        | 8S        | 8S            |
| Firing Interval | 1°R       | 1°L       | 3°R       | 3°L           |
| Type Spread | Calm      | --        | --        | --            |
| Sea Conditions | Submarine Base, Pearl Harbor, T.H. | --        | --        | --            |
| Overhaul Activity | NONE      | --        | --        | --            |
| Remarks     |           |           |           |               |

- 11 -
ENCLOSURE "A"

— page 176 —
(H) ATTACK DATA (CONT'D):
U.S.S. GROWLER - Gun Attack #1 - Patrol #8.
Time: 1330 (K) - April 10, 1944 - Lat: 24-28 N., Long: 144-42 E.

Sunk: Small naval auxiliary vessel about 250 T. Appeared to be
      station ship, possibly for planes or weather.

      Opened fire at 2500 yards with 3" gun and one 20mm gun.
      At 1,000 yards fired with all three 20mm guns. Saw
      vessel explode, burst into flames, and sink.

Details of Action:
      Fired twenty-five (25) rounds of 3" ammunition.
      Fired sixteen (16) magazines of 20mm ammunition.
      Strafing by 20mm guns prevented enemy from manning
      his guns. Closed to 200 yards and fired deliberately
      with 3" gun. With a total of about 15 hits he ex-
      ploded and sank. Twice the 3" ammunition jammed and
      the gun had to be cleared using a dummy cartridge.
      Radar ranges used.

- 12 -
ENCLOSURE "A"

— page 177 —
(I) MINES:
     No data.

(J) ANTI-SUBMARINE MEASURES AND EVASION TACTICS:

     This area is well patrolled by patrol craft - mostly new, smart -
looking sub-chasers. Beginning 1 April there were strong indications
that radar was being used. Searching patrol craft were very tenacious,
but hampered by poor sound condition (rough weather). Echo ranging
was used sparingly, although all were equipped. On several occasions,
during attack; it sounded as if a fathometer were being used.

     To evade, we headed away at deep submergence, running silent.

     During night attacks by A/S vessels, we surfaced as soon as
possible to open out - the Japs would remain in the same spot all
the following day.

(K) MAJOR DEFECTS AND DAMAGE:

     Bearings - Enroute Pearl Harbor from San Francisco,
all forward Main Motor bearings ran higher than normal temperature.
At Pearl Harbor, bearings were checked and clearances taken. Enroute
to Midway, high temperatures were again encountered. At Midway all
forward bearings were disassembled and scraped to proper clearances.
Enroute station high temperatures were still encountered. On 3
March 1944, in heavy seas, #4 Main Motor bearing forward burned out
scoring the journal to a depth of .025". After disassembling and
inspection, lifting pad was found in "lifting" position. Journal
was honed until smooth surface was obtained although deep scores still
remained. New bearing installed with bearing surface approximately
80%. Leads taken on upper half showed clearances to be at least
.025". For rest of patrol this bearing ran normal. All other bear-
ings were checked to insure lifting pad in "disengaged" positon. At
this time #3 Main Motor bearing forward began to run hot. On 5
March 1944, #3 Main Motor forward bearing was disassembled and lead
clearances taken. Leads were found to be above .025" crown and
.015 - .023" side. Lower half was blued and found about 50% bearing
surface. Refitted to obtain 75% bearing surface. Reinstalled and
operated at safe temperature although above normal.

     Battery - On arrival Midway on 25 February 1944, a full voltage
ground developed on both forward and after batteries due to spilled
electrolyte, caused by shifting the battery cells in extremely heavy
seas, which opened the sealing compound. Wedging and strongbacks
were found loose. Battery was completely washed and flushed and sumps
pumped dry; and tops of batteries resealed.

     The outboard rows will require further cribbing for support to
prevent movement of the cells in rough seas.

- 13 -
ENCLOSURE "A"

— page 178 —
(K) MAJOR DEFECTS AND DAMAGE (CONT'D):

#1 Auxiliary Engine - On 28 February 1944, the drive shaft of
the governor and fuel pump broke, due to misalignment of the gen-
erator. Engine was put out of commission since it was not feasible
to remove generator and gear train cover at sea.

#2 Auxiliary Engine - On 25 February 1944, number four series
shunt pole on #2 auxiliary generator developed a fuel voltage ground,
caused by dirt and moisture. Removed upper and lower half of end
bell plus brush rigging and field pole. Pole was thoroughly cleaned,
reinsulated with mica, fish paper, and glyptol, and reinstalled. No
further grounds developed.

(L) RADIO:

Normal and satisfactory.

(M) RADAR:

PPI-SJ-1 radar failed the first day on station. Breakdown was
caused by the high voltage transformer of the HV rectifier shorting
to its case. Repaired by isolating the case from ground, after ten
days. Voltage transformer (Intensifier) of PPI Unit failed after
80 hours. This caused loss of PPI for remainder of patrol. Range
scope of SJ-1 functioned satisfactorily for the remainder of the
patrol. Ranges, to 50,000 yards were obtained on islands throughout
the patrol. It is noted, however, that the radar could not be relied
upon to pick up small patrol craft during heavy weather.

SD-a operated satisfactorily. No breakdowns during patrol.

(N) SOUND GEAR AND SOUND CONDITIONS:

Sound gear functioned normally. In area of NANSEI SHOTO sound
conditions were fair to poor depending on the weather, with rough
seas prevailing. In rough water the JP sound gear has little value.

(O) DENSITY LAYERS:

None noted in NANSEI SHOTO.

(P) HEALTH, FOOD, AND HABITABILITY:

Health and Food - Very good. Habitability - good, except that
in rough weather, considerable water was taken over, particularly
while #4 main ballast carried fuel. Bridge personnel "took a con-
tinual beating". Twice the ventilation (and main induction) flooded,
with water entering the living spaces. Bunks and clothing were
soaked. This occured even when most favorable courses and speeds
were selected.

- 14 -
ENCLOSURE "A"

— page 179 —
(Q) PERSONNEL:
Morale excellent.

(R) MILES STEAMED - FUEL USED:
Pearl to Area 11A - - - - - - 4031 Miles 42,505 gals.
In Area 11A 2670 Miles 21,004 gals.
Area 11A to MAJURO ATOLL - - - 2810 Miles 34,110 gals.

                                 9511 Miles 96,061 gals.

(S) DURATION:
Days enroute PEARL to area 11A - - - 19
Days in area 11A 28
Days enroute MAJURO - - - - - - - 12
Days submerged 29

(T) FACTORS OF ENDURANCE REMAINING:
Torpedoes Fuel Provisions Personnel

20 35,343 20 10

(U) REMARKS:
Rough weather caused us as much worry as did the enemy, and
probably prevented us from finding targets.

- 15 - ENCLOSURE "A"

— page 180 —
SUBMARINE DIVISION ONE HUNDRED TWO.

FB5-102/A16-3                                        Care of Fleet Post Office,
Serial: 023                                          San Francisco, California,
FIRST ENDORSEMENT to                                 18 April, 1944.
CO GROWLER ltr.SS215/A12
Serial 2-44 of 4/14/44

CONFIDENTIAL

From:        The Commander Submarine Division ONE HUNDRED TWO.
To :         The Commander-in-Chief, U.S. Fleet.
"Via":       (1) The Commander Submarine Squadron TEN.
             (2) The Commander Submarine Force, Pacific Fleet.
             (3) The Commander-in-Chief, U.S. Pacific Fleet.

Subject:     U.S.S. GROWLER; Eighth War Patrol, Comment on.

             1. The Growler Eighth War Patrol extended over a period
of fifty-nine days, twenty-eight days of which were spent in the
assigned area which included Empire sea routes to the eastward and
westward of Amami O Shima. The patrol was terminated in accordance
with the operation order.

             2. The offensive operations of Growler were hampered by
exceedingly rough seas and foul weather accompanied by periods of
poor visibility throughout the greater part of the patrol. Despite
these handicaps good area coverage was accomplished which resulted
in four contacts worthy of torpedo fire. Of the four contacts,
three escaped attacks due to the following circumstances:

             Contact No. 2 - A large destroyer patrolling at ten
             knots in bright moonlight sighted Growler while she
             was attempting to gain position ahead on the surface.
             Growler was driven down by gun fire and subsequently
             was depth-charged. An attempt to fire a "down-the-
             throat" shot failed due to inability to maintain
             periscope depth in the heavy seas.

             Contact No. 7 - A five-or six-ship convoy with air
             screen was sighted at 1410 on the afternoon of March
             19th. Growler was too far on the flank to close to
             torpedo range so she trailed submerged until dark.
             The convoy appeared to be heading toward Bungo Suido.
             After emerging at sunset contact had been lost and a
             search toward Bungo Suido during the night failed to
             regain contact.

             Contact No. 8 - Two small unescorted freighters were
             sighted close inshore to Amami O Shima. The nearest
             range obtainable was 7000 yards prior to their entry
             into port.

                                        - 1 -

— page 181 —
SUBMARINE DIVISION ONE HUNDRED TWO

FB5-102/A16-3
Serial 023

CONFIDENTIAL

FIRST ENDORSEMENT to
CO GROWLER ltr. SS215/A12
Serial 2-44 of 4/1/44

Subject: U.S.S. GROWLER; Eighth War Patrol; Comment on.

3. One contact developed into a torpedo attack and another
provided a gun attack.

Contact No. 10 - A small 3,000 ton freighter was
attacked with four torpedoes on the afternoon of March
22nd at a range of 1700 yards. One explosion at
approximate, estimated torpedo-run time was heard
but unfortunately depth control was lost and results
were not observed. This explosion could have been
a depth charge as one torpedo track had been seen
to pass under the bow of the target prior to loss of
depth control and no doubt had been sighted by the
ship or his escorts. Escorts, previously unobserved
by Growler, commenced immediate depth charge attack
and held Growler down which prevented further
observations.

Contact No. 14 - A small Naval Auxiliary, mounting
one gun forward, was attacked with 3" and 20mm fire
after accomplishing battle-surface at an opening
range of 2500 yards. The 20mm fire effectively
prevented the enemy from manning his guns. Despite
having to clear two 3" gun jams by using blank
cartridges, the gun delivered fifteen hits as the
range closed to 200 yards. The ship exploded and sank.
There were no survivors.

4. Numerous encounters with A/S vessels and aircraft
marked the patrol. High seas rendered SJ radar ineffective in the
search for small A/S ships at night and in low visibility and
close encounters resulted, one at a range of 400 yards.

5. The tactics employed by some of the newer patrol
vessels sighted by Growler, accompanied by strong radar inter-
ference in their direction, indicate that such ships are radar
equipped. These ships were newly painted and resembled our SC-type.

Care of Fleet Post Office,
San Francisco, California,
18 April, 1944

- 2 -

— page 183 —
FC5-10/A16-3(5)
Serial 084

CONFIDENTIAL

SECOND ENDORSEMENT to
CO GROWLER SS215/A12
Ser. 2-44 of 14 Apr. 1944.

From: The Commander Submarine Squadron Ten.
To : The Commander-in-Chief, U.S. Fleet.
Via : (1) The Commander Submarine Force, Pacific Fleet.
(2) The Commander-in-Chief, U.S. Pacific Fleet.

Subject: U.S.S. GROWLER Report of War Patrol Number Eight,
Comments on.

1. Forwarded in agreement.

2. GROWLER seemed to have an inordinate amount of
difficulty maintaining periscope depth due undoubtedly to heavy
seas encountered throughout the patrol. Concentration in this
important phase of submerged operations is indicated during her
training period.

3. The lack of Nip shipping as evidenced by this
patrol and by other recent patrols indicates: (a) the more
southern areas are "drying up", (b) Japs are using more in-
frequent and larger convoys, or (c) shipping is being drawn
closer to the so-called Empire.

4. GROWLER is congratulated upon completing this
most trying patrol and for sinking by gun fire a 250-ton naval
auxiliary.

[SIGNATURE: C. F. LACK.]

Copy to:
Comsubdiv 102,
CO GROWLER.
SUBMARINE SQUADRON TEN

Care of Fleet Post Office,
San Francisco, California,
19 April 1944.

— page 184 —
FF12-10/A16-3(15)/(16) SUBMARINE FORCE, PACIFIC FLEET hch 5 01911
Serial 0773 Care of Fleet Post Office,
San Francisco, California,
CONFIDENTIAL 24 April 1944.

THIRD ENDORSEMENT to NOTE: THIS REPORT WILL BE
GROWLER Report of DESTROYED PRIOR TO
Eighth War Patrol. ENTERING PATROL AREA.

COMSUBSPAC PATROL REPORT NO. 410
U.S.S. GROWLER - EIGHTH WAR PATROL.

From: The Commander Submarine Force, Pacific Fleet.
To : The Commander-in-Chief, United States Fleet.
Via : The Commander-in-Chief, U. S. Pacific Fleet.

Subject: U.S.S. GROWLER (SS215) - Report of Eighth War Patrol.
(21 February to 17 April 1944).

1. The eighth war patrol of the GROWLER was conducted in
an East China Sea Area.

2. The patrol was handicapped by extensive and effective
anti-submarine activity. Of the 14 contacts made, 10 were definitely
anti-submarine patrol vessels. The aggressive gunfire attack on a
small auxiliary vessel was well executed.

3. This patrol is designated as successful for Combat
Insignia Award.

4. The Commander Submarine Force, Pacific Fleet, congrat-
ulates the Commanding Officer, officers, and crew for inflicting the
following damage upon the enemy:

SUNK
1 - Small Naval Auxiliary - 250 tons (Gun attack No. 1)

DAMAGED
1 - Freighter (class unknown) - 3,000 tons (Attack No. 1)

GRAND TOTAL - 3,250 tons

C. A. LOCKWOOD, Jr.

[STAMP: FILMED]

Distribution and authentication
on following page.

- 1 -

— page 185 —
SUBMARINE FORCE, PACIFIC FLEET
FF12-10/A16-3(15)/(16)
hch
Serial 0773
Care of Fleet Post Office,
San Francisco, California,
24 April 1944
CONFIDENTIAL

THIRD ENDORSEMENT to
GROWLER REPORT OF
Eighth War Patrol
NOTE: THIS REPORT WILL BE
DESTROYED PRIOR TO
ENTERING PATROL AREA.
COMSUBSPAC PATROL REPORT NO. 410
U.S.S. GROWLER - EIGHTH WAR PATROL.

Subject: U.S.S. GROWLER (SS215) - Report of Eighth War Patrol.
(21 February to 17 April 1944).

— page 187 —
[HANDWRITTEN: 2ND COPY]

U.S.S. GROWLER (SS215)
SS215/A16
Serial: 04
[STAMP: DECLASSIFIED]I-A-L

Care of Fleet Post Office,
San Francisco, California,
17 July 1944.

From: The Commanding Officer.
To : The Commander in Chief, UNITED STATES FLEET.
Via : (1) The Commander Submarine Division FORTY FOUR.
(2) The Commander Submarine Squadron FOUR.
(3) The Commander Submarine Force, PACIFIC FLEET.
(4) The Commander in Chief, U. S. PACIFIC FLEET.

Subject: U.S.S. GROWLER, Report of War Patrol Number Nine.

Enclosure: (A) Subject Report.
(B) Track Chart (for Comsubpac only).

1. Enclosure (A) covering the Ninth War Patrol of this
vessel, conducted in the MARIANAS - EASTERN PHILIPPINE - LUZON
STRAIT Areas, during the period 14 May 1944 to 17 July 1944, is
forwarded herewith.

[SIGNATURE: T. B. Oakley, Jr.]
T. B. OAKLEY, Jr.

DECLASSIFIED-ART. 0445, OPNAVINST 5510.1C
BY [HANDWRITTEN: OP-09C] DATE [HANDWRITTEN: 5/30/72]
[STAMP: DECLASSIFIED]

[HANDWRITTEN: 82085]

— page 215 —
CONFIDENTIAL
U.S.S. GROWLER (SS215)
Ninth War Patrol

(F) SHIP CONTACTS
NO. | TIME | DATE | LAT. | LONG. | TYPE (S) | INITIAL RANGE | ESTIMATED COURSE AND SPEED | HOW CONTACTED | REMARKS
1 | 1229(K) | 23 May | 15-09 N | 125-07 E | 2 AK's | 12,000 | 0850 | JK-pings | 1 AK similar to ISIK/NI MARU,
| | | | | | | 8 knots | P (sub) | 1 AK similar to SEIA MARU,
| | | | | | | | | 1 AK similar to KASAGI
| | | | | | | | | MARU P.107.
2 | 1640(K) | 23 May | 15-10 N | 125-05 E | 2 AK's | 15,000 | 0950 | Same | 1 AK similar to ISIK/NI MARU
| | | | | 1 PC | | 6.5 knots | | towing 1 AK similar to
| | | | | | | | | DAIDO MARU P.107.
3 | 0517(K) | 31 May | 13-50 N | 125-02 E | 1 SS | 8,000 | 160° | SD | Probable RO class.
| | | | | | | 15 knots | |
4 | 1700(K) | 4 June | 15-16 N | 125-38 E | 3 sampans | 8,000 | 000° | JK(screws) | Fishing sampans about 60 ft.
| | | | | | | 10 knots | P (sub) |
5 | 2000(K) | 4 June | 15-18 N | 125-23 E | Large patrol boat. | 11,000 | Various | P (surf) | Sampans closer, blinking
| | | | | 2 or 3 sampans. | 5,100 | 18 knots | | lights.
6 | 1038(I) | 20 June | 10-26 N | 126-02 E | Smoke | 25,000 | 120° | P (sub) | Course and speed determined
| | | | | | | 7 knots | | by position relative to land.
7 | 1125 (I) | 27 June | 10-55 N | 126-26 N | 1 sampan. | 6,000 | 000° | P (sub) | Typical native fishing sampan.
| | | | | 126-40 E | | | 5 knots | |
8 | 0924(I) | 28 June | 10-26 N | 126-42 E | 1 sampan. | 16,000 | Northerly | P (surf) | Sampan with two stick masts.
|
9 | 1025(I) | 28 June | 10-26 N | 126-42 E | 2 sampans. | 4,000 | 200° | P (sub) | One 50 ft. - one 35 ft. Each
| | | | | | | 5 knots | | had small mast forward.

— page 217 —
CONFIDENTIAL
(G) AIRCRAFT CONTACTS:
U.S.S. GROWLER (SS215)
Ninth War Patrol.

| NO. | TIME DATE | LAT. LONG. | TYPE (S) | INITIAL RANGE MILES | ESTIMATED COURSE | HOW CON-TACTED | REMARKS |
|---|---|---|---|---|---|---|---|
| 1 | 1132(L) 20 May | 16-33 N 149-45 E | Unident. | 10 | 060° | SD | Submerged to avoid detection. |
| 2 | 1219(KL) 21 May | 16-34 N 149-34 E | Unident. | 6 | 100° | P | Submerged to avoid detection. |
| 3 | 1421(K) 22 May | 16-37 N 149-42 E | Med. bomber Unident. | 3 | 290° | P | Submerged to avoid detection. |
| 4 | 0541(K) 23 May | 16-57 N 150-18 E | PETE | 8 | 330° | SD | Submerged to avoid detection. |
| 5 | 0747(K) 23 May | 16-20 N 150-07 E | EMILY | 10 | 220° | SD | Submerged to avoid detection. |
| 6 | 0846(K) 23 May | 15-18 N 150-05 E | EMILY | 10 | 270° | P | Air cover for SC-1. |
| 7 | 0958(K) 23 May | 15-15 N 150-05 E | RUFE | 7 | 240° | P | Air cover for SC-1. |
| 8 | 1213(K) 23 May | 15-25 N 149-08 E | RUFE | 4 | 075° | P | Air cover for SC-1. |
| 9 | 1240(K) 23 May | 15-08 N 149-07 E | JAKE | 4 | Various | P | Air cover for SC-1. |
| 10 | 1530(K) 23 May | 15-18 N 149-04 E | MAVIS | 13 | Various | P | Air cover for SC-1. |

— page 218 —
CONFIDENTIAL
U.S.S. GROWLER (SS215)
Ninth War Patrol.

NO. | TIME | DATE | LOCATION | TYPE (S) | INITIAL | ESTIMATED | HOW CON- | REMARKS
    |      |      |          |           | RANGE   | COURSE    | TACTED   |
    |      |      |          |           | (MILES) |           |          |
----|------|------||||||
11  | 1615(K) | 23 May | 15-10 N  | BETTY     | 11      | Various   | P        | Air cover for SC-1.
    |      |      | 145-05 E |           |         |           |          |
----|------|------||||||
12  | 0759(K) | 23 May | 15-26 N  | SALLY     | 11      | 0350      | P        |
    |      |      | 146-00 E |           |         |           |          |
----|------|------||||||
13  | 1014(K) | 25 May | 15-22 N  | RUFE      | 5       | 250°      | P        |
    |      |      | 145-57 E |           |         |           |          |
----|------|------||||||
14  | 2000(K) | 25 May | 15-18 N  | Two unident. | 16      | Various   | SN       | Searchlight-beam over
    |      |      | 146-09 E |           |         |           |          | SAIPAN.
----|------|------||||||
15  | 0743(K) | 27 May | 15-09 N  | BETTY     | 16      | 050°      | P        |
    |      |      | 145-58 E |           |         |           |          |
----|------|------||||||
16  | 0750(K) | 27 May | 15-09 N  | Unident.  | 7       | 175°      | P        |
    |      |      | 145-58 E | fighter   |         |           |          |
----|------|------||||||
17  | 0958(K) | 27 May | 15-03 N  | RUFE      | 10      | 170°      | P        |
    |      |      | 145-50 E |           |         |           |          |
----|------|------||||||
18  | 1008(K) | 27 May | Over     | Six unident. | 8       | Various   | P        | Planes in search light beam over
    |      |      | SAIPAN   | fighters  |         |           |          | SAIPAN.
----|------|------||||||
19  | 1959(K) | 27 May |          | Unident.  | 20      | 220°      | P        |
----|------|------||||||
20  | 0815(K) | 28 May |          | Unident.  | 14      | 220°      | P        |
    |      |      |          | (fighter) |         |           |          |
----|------|------||||||
21  | 0928(K) | 28 May |          | Med.Bomber | 11      | 0750      | P        |
    |      |      |          | (unident) |         |           |          |

- 31 -

— page 219 —
CONFIDENTIAL
U.S.S. GROWLER (SS215)
Ninth War Patrol.

NO. | TIME | DATE | LAT. | LONG. | TYPE (S) | INITIAL RANGE (MILES) | ESTIMATED COURSE | HOW CON- TACTED | REMARKS
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
22 | 1050(K) | 28 May | Same | | 3 unident. fighters | 9 | 220° | P |
23 | 1118(K) | 28 May | 14-52 N | 145-44 E | Unident. | | | | P |
24 | 1130(K) | 28 May | 14-52 N | 145-44 E | RUFE | 5 | 120° | P |
25 | 1235(K) | 28 May | 14-52 N | 145-41 E | EMILY | 4 | 060° | P |
26 | 1615(K) | 29 May | 13-27 N | 145-38 E | Unident. 2 eng. bomber | 10 | 315° | SD | Submerged to avoid de-
| | | | | | | | | tection.
27 | 1045(K) | 30 May | 14-53 N | 145-28 E | SALLY | 8 | 010° | P | Headed for SAIPAN.
28 | (312(K) | 31 May | 13-40 N | 146-09 E | Unident. | 5 | 000° | SN | Landing lights lighted. Plane
| | | | | | | | | landed on ROTA ISLAND.
29 | 1124(K) | 31 May | 13-35 N | 146-13 E | SALLY | 5 | 000° | SD | Submerged to avoid detection.
30 | 0943(K) | 3 June | 14-54 N | 146-20 E | BETTY | 5 | 300° | P | Search plane - similar plane
| | | | | | | | | sighted at 1106(K) about 5 mi.
31 | 0510(K) | | Over Saipan | Various | Various | | | P | Throughout the day at least one
| | | | | | | | | MAVIS, EMILY or JAKE sighted each
| | | | | | | | | time periscope was exposed.

- 32 -

— page 220 —
CONFIDENTIAL
U.S.S. GROWLER (SS215)
Ninth War Patrol.

| NO. | TIME | DATE | LAT. | LONG. | TYPE (S) | INITIAL RANGE (MILES) | ESTIMATED COURSE | HOW CONTACTED | REMARKS |
|---|
| 32 | 2016(K) | 4 June | 15-18 N | 125-23 E | Unident. | 8 | 270° | SN | Tracked by SJ radar. |
| 33 | 0045(K) | 5 June | 15-02 N | 124-59 E | Unident. | 8 | 000° | R (SJ) | Flashed "I" on running lights. |
| 34 | 0133(K) | 5 June | Same | Same | Unident. | 8 | 270° | SN | Flashed "I" on running lights. |
| 35 | 1410(I) | 19 June | 10-29 N | 126-03 E | RUFE | 12 | 180° | P | Submerged to avoid detection - possibly ship or observation plane. |
| 36 | 1200(I) | 22 June | 12-53 N | 126-34 E | Unident. | 10 | 230° | SD | Submerged to avoid detection. |
| 37 | 1311(I) | 22 June | 12-55 N | 126-33 E | NELL | 12 | 220° | P | Headed toward SAN BERNARDINO STRAIT. |
| 38 | 0958(I) | 23 June | 16-38 N | 124-16 E | NELL | 10 | 240° | SD | Submerged to avoid detection. |
| 39 | 0800(I) | 24 June | 20-53 N | 122-59 E | SALLY | 4 | 000° | SD | Submerged to avoid detection. |
| 40 | 1235(I) | 24 June | 21-27 N | 122-28 E | NELL | 6 | 310° | SD | Submerged to avoid detection. |
| 41 | 1535(I) | 24 June | 21-30 N | 122-35 E | EMILY | 8 | 270° | P | Submerged to avoid detection. |

- 33 -

— page 221 —
CONFIDENTIAL
U.S.S. GROWLER (SS215)
Ninth War Patrol.

| NO. | TIME | DATE | LAT. | LONG. | TYPE (S) | INITIAL RANGE (MILES) | ESTIMATED COURSE | HOW CONTACTED | REMARKS |
|---|
| 42 | 0844(I) | 25 June | 22-00 N | 121-47 E | M.VIS | 10 | 340° | P | Submerged to avoid detection. Sub-sequently sighted thru periscope. |
| 43 | 0639(KL) | 5 July | 22-02 N | 143-04 E | HELLCAT | 5 | Various | SD | Submerged to avoid detection. |
| 44 | 0808(KL) | 5 July | 22-02 N | 143-15 E | 1 AVENGER 7 HELLCATS | 10 | 270° | SD | Confirmed by periscope. |
| 45 | 0920(KL) | 5 July | 22-02 N | 143-17 E | 6 HELLCATS | 10, 7, & 5 | 180° | SD | Probably same as LC-44. |

- 34 -

— page 233 —
FB5-44/A16-3

Serial: ( 0-64 )

C-O-N-F-I-D-E-N-T-I-A-L
FIRST ENDORSEMENT
TO U.S.S. GROWLER Ninth
War Patrol Report.

From:
To :
Via : (1)
(2)
(3)

Subject:

1.
patrol for Lieutenant Commander T.B. OAKLEY, Jr., as a commanding officer.
The patrol covers a period of sixty-five days of which forty-one were spent in
the area.

2.
three (two convoys and one enemy submarine) could not be attacked because of
enemy escorts active anti-submarine activities and convoy's and submarine's
evasive tactics.
The fourth ship contact consisting of a tanker, three large
escorts, and a PC or SC was attacked (attack number one). The GROWLER fired
six torpedoes making three hits in the tanker and apparently one hit in a
large escort. Both ships sank.

3.
All material defects and necessary repairs will be accomplished during the
normal refit.

4.
to be congratulated on the damage inflicted upon the enemy during her ninth
war patrol. SUBMARINE DIVISION FORTY-FOUR

Care of Fleet Post Office
San Francisco, California
19 July 1944.

The Commander Submarine Division FORTY-FOUR.
The Commander-in-Chief, U.S. Fleet.
The Commander Submarine Squadron FOUR.
The Commander Submarine Force, Pacific Fleet.
The Commander-in-Chief, Pacific Fleet.

U.S.S. GROWLER Ninth War Patrol - comments on.

The ninth war patrol of the U.S.S. GROWLER was the second war

There were four ship contacts worthy of developing. The first

The health and morale of the crew on arrival were very good.

The commanding officer, officers and crew of the GROWLER are

[SIGNATURE: L. N. Blair]
L. N. BLAIR.

— page 234 —
FC5-4/A16-3
Serial: 0275

CONFIDENTIAL

SECOND ENDORSEMENT to:
USS GROWLER Report of
Ninth War Patrol.

From: Commander Submarine Squadron FOUR.
To: Commander-in-Chief, U.S. FLEET.
Via: Commander Submarine Force, PACIFIC FLEET.
     Commander-in-Chief, PACIFIC FLEET.

Subject: U.S.S. GROWLER Ninth War Patrol - Comments on.

1. Forwarded, concurring in the remarks of Com-
mander Submarine Division FORTY-FOUR.

2. The GROWLER's system of qualifying enlisted per-
sonnel outlined in Para. "Q" is excellent and is recommended to
all submarines of this Squadron.

3. The Commanding Officer, officers and crew of the
GROWLER are congratulated on the results obtained on this war
patrol.

C. F. ERICK.
SUBMARINE SQUADRON FOUR
Fleet Post Office,
San Francisco, California,
22 July 1944.
11/rg

— page 235 —
FF12-10/A16-3(15)/(16)
Serial 01516
CONFIDENTIAL

THIRD ENDORSEMENT to
GROWLER Report of
Ninth War Patrol.

COMSUBSPAC PATROL REPORT NO. 477.
U.S.S. GROWLER - NINTH WAR PATROL.

From:
To :
Via :
Subject:

1.
the Marianas Areas and also in the Luzon Straits off the Philippine
Islands.

2.
anas on offensive missions just prior to the landings on Saipan.
During the strike, the GROWLER performed lifeguard mission. Part
of the patrol was spent guarding the entrance to Surigao Strait
awaiting the possible return of the Japanese Fleet from the Battle
of the Philippine Sea. During this period, the GROWLER contacted
an enemy tanker heavily escorted and succeeded in making an aggres-
sive attack which resulted in the sinking of the tanker and the
probable sinking of an escort.

3.
aboard the GROWLER is of note.

4.
Insignia Award.

5.
gratulates the Commanding Officer, officers, and crew for this
successful war patrol. The GROWLER is credited with having in-
flicted the following damage upon the enemy:

S U N K
1 - Large Tanker (class unknown) - 10,000 tons (Attack No. 1)
D A M A G E D
1 - Escort Vessel (class unknown)(EU) - 600 tons (Attack No. 1)

GRAND TOTAL 10,600 tons

Distribution and authentication
on following page.
- 1 - SUBMARINE FORCE, PACIFIC FLEET
hch
Care of Fleet Post Office,
San Francisco, California,
25 July 1944.
[STAMP: 25 JUL 1944]

NOTE: THIS REPORT WILL BE
DESTROYED PRIOR TO
ENTERING PATROL AREA.

The Commander Submarine Force, Pacific Fleet.
The Commander-in-Chief, United States Fleet.
The Commander-in-Chief, U. S. Pacific Fleet.

U.S.S. GROWLER (SS215) - Report of Ninth War Patrol.
(14 May 1944 to 17 July 1944).

The ninth war patrol of the GROWLER was conducted in

The first part of the patrol was spent off the Mari-

The system of training and qualifying of personnel

This patrol is designated as "Successful" for Combat

The Commander Submarine Force, Pacific Fleet, con-

C. A. LOCKWOOD, Jr.

— page 236 —
FF12-10/A16-3(15)/ (16)
Serial 01516
CONFIDENTIAL
THIRD ENDORSEMENT
GROWLER Report of
Ninth War Patrol.

COMSUBSPAC PATROL REPORT NO. 477.
U.S.S. GROWLER - NINTH WAR PATROL.

Subject: U.S.S. GROWLER (SS215) - Report of Ninth War Patrol.
(14 May 1944 to 17 July 1944)

DISTRIBUTION:
(Complete Reports)
CominCh (7)
CNO (5)
CinCpac (6)
Intel.Cen.Pac.Ocean Areas (1)
ComServPac (1)
CinClant (1)
ComSubsLant (8)
S/M School, NL (2)
ComSoPac (2)
ComSoWesPac (1)
ComSubSoWesPac (2)
CTF 72 (2)
ComNorPac (1)
ComSubsPac (40)
SUBAD, MI (2)
ComSubsPacSubOrdCom (3)
All Squadron and Div.
Commanders, SubSPac (2)
ComSubsTrainPac (2)
All Submarines, SubSPac (1)

[SIGNATURE: E. L. Hynes] [HANDWRITTEN: 2nd]
E. L. HYNES, 2nd,
Flag Secretary. SUBMARINE FORCE, PACIFIC FLEET
[HANDWRITTEN: hch]
Care of Fleet Post Office,
San Francisco, California,
25 July 1944.

NOTE: THIS REPORT WILL BE
DESTROYED PRIOR TO
ENTERING PATROL AREA.

— page 238 —
[HANDWRITTEN: 2ND COPY]

U.S.S. GROWLER.

Care of Fleet Post Office,
San Francisco, California.
26 September 1944.

SS215/A16-3/00

Serial: ( 3-44 ).

C-O-N-F-I-D-E-N-T-I-A-L

From:[STAMP: DECLASSIFIED]Commanding Officer:
To :[STAMP: DECLASSIFIED]Commander-in-Chief, United States Fleet.
Via : (1) Official Channels.

Subject: U.S.S. GROWLER, Report on WAR PATROL NUMBER TEN.

Enclosure: (A) Subject Report.
(B) Track Chart. (ComSubPac Only).

1. Enclosure (A), covering the TENTH WAR PATROL of this
vessel conducted in areas between LUZON and FORMOSA during the
period 11 August 1944 to 26 September 1944, is forwarded herewith.

[SIGNATURE: T. B. OAKLEY, Jr.]

[STAMP: DECLASSIFIED-ART. 0445, OPNAVINST 5510.1C]
BY [HANDWRITTEN: OP89C] DATE [HANDWRITTEN: 5/30/72]

[STAMP: DECLASSIFIED]

[HANDWRITTEN: 91336]

— page 239 —
C-O-N-F-I-D-E-N-T-I-A-L
U.S.S. GROWLER.
Tenth War Patrol.

A. PROLOGUE

Arrived Pearl July 17, 1944 from 9th. War Patrol.
Refit conducted by Submarine Base and Submarine Division
44 relief crew. The following alterations and improve-
ments were completed: new 4" gun, 40 MM gun plus top-
side stowage for 96 rounds, two 50 cal. mounts plus
topside stowage for gun and ammunition, hydrogen burning
equipment, target tracking table in conning tower, booster
blower and air conditioning coil in control room, auxiliary
bow and stern plane indicators, modified TRIGGER type
bridge and new ven turi, BN and ABK, VHF, APR & SPA 40 -
1000 megacycles, cast iron pistons in three main engines
and "V" belt drive for shaft revolution indicators.
The ship is profoundly grateful to Commander D.T. Eddy,
USN and Commander S.K. Gibson, USN for their sincere effort
and cooperation in providing and installing the numerous
alterations and improvements.
Four days training included firing Mk 18 exercise
torpedoes, sound test, test firing of Mk 18 from bow tubes.
Received two new officers and 26 new men. Took on 24 Mk
18-1 torpedoes. Ready for sea 11 August 1944.

B. NARRATIVE

11 August 1944. All Times (VW).

1330 Underway for 10th. War Patrol in accordance with
Task Force 17 Operation Order 272-44.

1411 Joined by escort, PC 1078, steering base course
270(T) on Arma Course Clock at 3 engine speed.

1640 Changed base course to 335(T).

1900 Released escort.

2135 Changed base course to 315(T), using constant helm
zig zag 10° to 30° each side of base course dependent
upon light conditions; and Arma Course Clock during
bright moonlight or daylight. Heading for Midway.

12 August 1944.

Conducted structural test firing of new 4" gun.
Ten rounds expended - conditions satisfactory.

- 1 - ENCLOSURE (A).

— page 245 —
CONFIDENTIAL U.S.S. GROWLER Tenth War Patrol.
B. NARRATIVE (Cont'd).
1041 Sighted small MFM escort freighter (pinging) bearing
SC#2. 170(T), range 9,000 yards on westerly course. Part
of 1124 group.
1124 Sighted MAVIS and the following: 4 PCs or SCs, medium
AK and masts of 2 other ships bearing 230(T); closest
range about 10,000 yards, angle on bow 120 starboard.
Believe we guessed right about the remnants heading
for TAKAO. Unable to close and had difficulty dodg-
ing escorts who were everywhere.
1250 Sighted a large PC or DE about 8,000 yards range and
SC#3. masts of 2 ships bearing 170(T). Had about 7' of
scope out and believe the PC spotted it for he com-
menced pinging only in our direction.
1304 Here he comes with a zero angle bearing 175(T); and
using short scale echo ranging. Went to 300' and
rigged for depth charge attack.
1312 One depth charge. He passed astern but remained
in our vicinity along with another slow screw ship.
1400 Secured from depth charge attack - struggle to get
up. We are very heavy and prefer not to pump or
increase speed above 4 knots as we believe a "sneaker"
is lying to up there.
1443 Sighted what appears to be a small AK towing another
AK bearing 263(T), range 12,000, angle 160 starboard.
Tracked on course 280(T), speed about 7 knots. They
are probably heading for TAKAO. Foiled again!
1505 Sighted MAVIS and JAKE circling vicinity of ships.
AC#8.
1900 Sighted RUFE about 13 miles bearing 205(T).
AC#9.
1916 From time of submerging until now, heard incessant
random and pattern depth charging and aerial bombing
in vicinity of the attacks. Current during the day
2 to 3 knots toward 030(T).
1955 Surfaced on course 120(T) at 2 engine speed.
2000 SJ radar contact on plane 12,000 yards.
AC#10.
- 7 -

— page 246 —
C-O-N-F-I-D-E-N-T-I-A-L U.S.S. GROWLER. Tenth War Patrol.
B. NARRATIVE (Cont'd).

2004 SJ contact bearing 131(T) - 10,250 yards. Identi-
SC#4 fied as a PC. Bearing changed left and range closed
to 7,000 yards. Evaded and gradually returned to
former course.

2045 SD contact at 4 miles closing. Dove.
AC#11.

2114 Surfaced and continued at 2 engine speed.

2219 SJ contact 204(T) - 13,400 yards. Looks like a PC
heading toward. Evaded to NE and returned to 120(T).

2348 Ran through large oil slick. Smells like diesel oil.
This is NE of our attack position.

1 September 1944.

0025 SJ tracked a plane bearing 338(T) - 22,000 yards.
AC#12. Five hours later left this area.

0603 SJ contact on a MAVIS bearing 039(T) - 8,200 yards in
AC#13. spotty visibility. Dove. Conducted submerged patrol.

2 September 1944.

0252 Transmitted GROWLER serial one to ComSubPac.
Routine submerged patrol in new area.

2322 SJ interference. Exchanged recognition and identi-
fication signals with PAMPANITO. Sent message by
radar.

3 September 1944.

Transited BALINTANG CHANNEL submerged and experienced
current of 1 knots toward 030(T).

1814 Sighted sampan on SE course.

4 September 1944.

0218 Sighted white wake on glassy moonlit sea. Proved
to be column of low-flying white birds.

Routine submerged patrol. Upon surfacing ran in to
a point 12 miles north of CALAYAN ISLANDS; then made
a loop NW of DALUPIRI ISLANDS.

- 8 -

— page 247 —
C-O-N-F-I-D-E-N-T-I-A-L U.S.S. GROWLER. Tenth War Patrol.
B. NARRATIVE (Cont'd).

5 September 1944.

0412 SJ radar contact on plane bearing 095(T) - 14,350
AC#14. yards.

Submerged patrol about 60 miles north of NW tip
of LUZON.

0825 Heard weak pinging bearing 203(T) moving right.
Came to normal approach course and speeded up.

0927 Sighted tall thin mast of a ship bearing 269(T)
SC#6. about 17,000 yards. Bearing changed 3° in one minute.
Came to North. Manned battle stations. Lost sight
contact and estimate ship to be an AS patrol on NW
heading about 10 knots. Came back to 290(T).

1412 Sighted object, closed and saw a gray clinker-built
water-filled lifeboat with number "24" on each quarter.
There were several boxes etc., floating inside the
boat, which had a large hole in the stern.

6-7 September 1944.

Submerged patrol in new daily patrol station. Held
fire control drills.

- 9 -

— page 265 —
U.S.S. GROWLER.
Tenth War Patrol.

C-O-N-F-I-D-E-N-T-I-A-L
G. AIRCRAFT CONTACTS
CONTACT NUMBER.
| | 1 | 2 | 3 |
|---|---|---|---|
| Date | 25 Aug.1944 | 26 Aug.1944 | 29 Aug.1944 |
| S | Time (Zone) Description | 1330 (L) | 1141 (Z) | 1107 (I) |
| U | Position: Latitude | 21-54N. | 22-03N | 21-38N. |
| B | Longitude | 145-00E. | 140-45E. | 124-24E. |
| M | Speed | 13.5 knots. | 13 knots. | 10 knots. |
| A | Course | 270(T). | 270(T) | 250(T). |
| R | Trim | Surf. | Surf. | Surf. |
| I | Minutes since last | .0 | 30 | 60 |
| N | SD Radar Search. | | | |
| E | Number | 1 | 1 | 1 |
| A | Type | Unk (Prob US) | Unk. | Unk. |
| I | Probable Mission | Unk. | Pat. | Pat. |
| R | How Contacted | Sight. | Sight. | Sight. |
| C | Initial Range | 20 mi. | 10 mi. | 12 mi. |
| R | Elevation Angle | 10° | 60 | 60 |
| A | Range & Relative Bearing | ND. | ND. | ND. |
| F | of Plane When It Detec- | 8 mi. | | |
| T | ted S/M. | 010° | C | Sea State | 1 | 3 | 1 |
| O | Sea Direction (Relative) | 045° | 315° | 330° |
| N | Visibility (Miles) | 40 mi. | 30 mi. | 30 mi. |
| D | Height of Clouds (Ft.). | 10,000 ft. | 4,000 ft. | 5,000 ft. |
| I | Percent Overcast | 6% | 20% | 40% |
| T | Rel. Bearing of Moon. | - - - - - - | - - - - - - | - - - - - - |
| I | Elevation of Moon. | - - - - - - | - - - - - - | - - - - - - |
| O | Percent Illumination. | - - - - - - | - - - - - - | - - - - - - |
| N | | | | |
| S | | | | |

Type of S/M Camouflage on this patrol Modified Gray.

- 27 -

— page 268 —
U.S.S. GROWLER.
Tenth War Patrol.

C-O-N-F-I-D-E-N-T-I-A-L
G. AIRCRAFT CONTACTS (Cont'd).

CONTACT NUMBER. | 12. | 13. | 14. | 15.
| 1 Sept. 44. | 1 Sept. 44. | 5 Sept. 44. | 13 Sept. 1944.
S | | 0025 (I) | 0603 (I) | 0412 (I) | 0650 (I).
U | | 21-30N. | 20-53N. | 19-25N. | 20-10N.
B | | 121-50E. | 122-17E. | 120-55E. | 117-15E.
M | | 13 knots. | 13 knots. | 10 knots. | 15.8 knots.
A | | 125(T). | 180(T). | 270(T). | 055(T).
R | | Surf. | Surf. | Surf. | Surf.
I | | 30min. | 4 hrs. | - - - | 10 min.
N | | | | |
E | | | | |

— page 270 —
U.S.S. GROWLER.
                                                              Tenth War Patrol.

C-O-N-F-I-D-E-N-T-I-A-L

— page 272 —
U.S.S. GROWLER                                                              Tenth War Patrol.
C-O-N-F-I-D-E-N-T-I-A-L
H. - ATTACK DATA                                TORPEDO ATTACK NO. 1A (Cont'd).

                                                #6              #5              #4

Tubes Fired.
Track Angle.                                    103 P           105 P           103 P
Gyro Angle.                                     345             343             344
Depth Set.                                      6 ft.           6 ft.           6 ft.
Power.                                          (Single speed torpedo).
Hit or Miss.                                    Hit             Hit             Hit
Erratic.                                        No              No              No
Mark Torpedo.                                   Mark 18-1       Mark 18-1       Mark 18-1
Serial No.                                      55076           56115           54963
Mark Exploder.                                  Mark 8-5        Mark 8-5        Mark 8-5
Serial No.                                      8885            9293            8807
Actuation Set.                                  Contact         Contact         Contact
Actuation Actual.                               Contact         Contact         Contact
Mark Warhead.                                   Mark 18-2       Mark 18-2       Mark 18-2
Serial No.                                      2145            2049            3206
Explosive.                                      Torpex          Torpex          Torpex
Firing Interval.                                                11 sec.         11 sec.
Type Spread.                                    Divergent       Divergent       Divergent
Sea Conditions.                                 1               1               1
Overhaul Activity.                              Submarine Base, Pearl Harbor, T.H.
Remarks:                                        Saw phosphorescent wakes for about 15 yards
                                                after leaving ship.

                                                - 34 -

— page 273 —
U.S.S. GROWLER
C-O-N-F-I-D-E-N-T-I-A-L Tenth War Patrol.
H. ATTACK DATA (TORPEDO ATTACK REPORT FORM)

U.S.S. GROWLER. Torpedo Attack No. 1B. Patrol No. 10
Time. 04:37:06(I) Date 31 August 1944. Lat. 21-29N. Long. 121-21E.
Description: Same as for Attack No. 1A.

Ship Damaged or One large freighter (EU) - 7,500 tons.
probably sunk: Composite superstructure.

Damage determined Saw one hit near the stern and one hit abaft
by: the stack. When last seen the freighter was
listed.

Target Draft-Loaded Course 125°(T). Speed 7 knots. Range 3070 yds.

OWN SHIP DATA

Speed: 8 knots. Course 210°(T). Depth: Surface. Angle: -

FIRE CONTROL AND TORPEDO DATA

Type Attack: Night surface attack using radar ranges and
TBT bearings.

- 35 -

— page 274 —
U.S.S. GROWLER
                                                              Tenth War Patrol.
C C-O-N-F-I-D-E-N-T-I-A-L
H. ATTACK DATA                 TORPEDO ATTACK NO. 1B (Cont'd).
                               #3             #2             #1
Tubes Fired.                   107 P          109 P          107 P
Track Angle.                   348            346            348
Gyro Angle.                    6 ft.          6 ft.          6 ft.
Depth Set.                     (Single speed torpedo).
Power.
Hit or Miss.                   Hit            Hit            Miss.
Erratic.                       No             No             No
Mark Torpedo.                  Mark 18-1      Mark 18-1      Mark 18-1
Serial N o.                    55437          55896          56203
Mark Exploder.                 Mark 8-5       Mark 8-5       Mark 8-5
Serial No.                     9018           8623           8854
Actuation Set.                 Contact        Contact        Contact
Actuation Actual.              Contact        Contact
Mark Warhead.                  Mark 18-2      Mark 18-2      Mark 18-2
Serial No.                     3150           2050           2048
Explosive.                     Torpex.        Torpex.        Torpex.
Firing Interval.                              9 sec.         9 sec.
Type Spread.                   Divergent      Divergent      Divergent
Sea Conditions.                1              1              1
Overhaul Activity. Submarine Base, Pearl Harbor, T.H.
Remarks:           Saw phosphorescent wakes for about 15 yards
                   after leaving ship.

                               - 36 -

— page 275 —
C-O-N-F-I-D-E-N-T-I-A-L
                                                                U.S.S. GROWLER
                                                                Tenth War Patrol.
H. ATTACK DATA
                                        (TORPEDO ATTACK REPORT FORM)
U.S.S. GROWLER                          Torpedo Attack No. 1C.     PATROL NO. 10.
Time 04:42:14I Date 31 August 1944. Lat. 21-29N. Long. 121-21E.
Description:                            Same as for Attack no. 1A.
Ship Sunk:                              One destroyer (EU) - 1300 Tons, estimated.

Damage determined
by:                                     Saw one hit. Two explosions in rapid succession
                                        were heard below. His 2 green lights went out,
                                        sparks flew in all directions and a huge puff of
                                        black smoke shot up. When smoke lifted, the
                                        destroyer had sunk and his pip disappeared from
                                        the A scope and PPI.

Target Draft-10'                        Course 356°(T). Speed 25 knots. Range 2860 yds.

                                                OWN SHIPS DATA
Speed: 16 knots.                        Course: 001°(T). Depth: Surface. Angle: --

                                        FIRE CONTROL AND TORPEDO DATA
Type Attack:                            Night surface attack using radar ranges and
                                        TBT bearings.

                                                - 37 -

— page 281 —
U.S.S. GROWLER.
Tenth War Patrol.
C-O-N-F-I-D-E-N-T-I-A-L
H. TORPEDO ATTACK REPORT

U.S.S. GROWLER Torpedo Attack No. 3. Patrol No. 10.
Time: 06-52-00(I). Date: 12 September 1944. Lat. 18-16N.
Long. 114-40E.

Target Data - Damage Inflicted.

Description: Probably a part of same convoy as of Attack
Nos. 2A & B. Tanker burning - probably sank.
Freighter burning - probably sank later.
DD and AM searching in vicinity of stopped
ships. Target was a DD identified as
FUBUKI Class (AMAGIRI Group) by 2 very broad
well-raked stacks with wide base and typical
Jap curved bow. Each stack had a black band
at the top and the after one had a white
band below the black.

Ship Sunk: One (1) DD FUBUKI Class, (AMAGIRI Group) -
1700 tons (EC).

Damage deter- Seventy-three seconds after firing first
mined by: torpedo heard a torpedo hit, time for the
first torpedo. Eleven seconds later heard
a second torpedo hit, timed for the third
torpedo. These hits were heard through the
hull and on the sound gear and were definitely
not depth charges. Less than a minute after
the first hit, heard five depth charges within
the space of about 3 seconds. Immediately
thereafter the target stopped echo ranging and
his screws slowed and stopped. His screws were
not heard again. About 3 minutes after the
first hit one distant depth charge was heard.
From 4 minutes after the first hit until 18
minutes after it, the following was heard
(explosions thru the hull and everything on the
soundgear) in order: loud crackling, 1 heavy
explosion, another heavy explosion, a distant
depth charge, 2 explosions, 4 explosions and
heavy crackling, hissing, popping (we now

- 43 -

— page 282 —
U.S.S. GROWLER.

                                                              Tenth War Patrol.
C-O-N-F-I-D-E-N-T-I-A-L

— page 283 —
C-O-N-F-I-D-E-N-T-I-A-L
H. FIRE CONTROL & TORPEDO DATA.

U.S.S. GROWLER.
Tenth War Patrol.

Torpedo Attack No. 3.

| | 1 | 2 | 3 | 4 | 5 | 6 |
|:|:------|:------|:------|:------|:------|:------|
| Tube No. | 1 | 2 | 3 | 4 | 5 | 6 |
| Track Angle. | 26½S | 27½S | 28½S | 28S | 30S | 29S |
| Gyro Angle. | 357½ | 358½ | 359½ | 359 | 001 | 000 |
| Depth Set. | 6 ft. | 6 ft. | 6 ft. | 6 ft. | 6 ft. | 6 ft. |
| Power. | Single speed torpedo. | | | | | |
| Hit or Miss. | Hit | Miss | Hit | Miss | Miss | Miss |
| Erratic. | No | No | No | No | No | No |
| Mark Torpedo. | 18-1 | 18-1 | 18-1 | 18-1 | 18-1 | 18-1 |
| Serial No. | 55336 | 54708 | 55424 | 55904 | 56173 | 54426 |
| Mark Exploder. | 8-5 | 8-5 | 8-5 | 8-5 | 8-5 | 4-2 |
| Serial No. | 8770 | 9623 | 9383 | 9349 | 9486 | 9124 |
| Actuation Set. | Cont. | Cont. | Cont. | Cont. | Cont. | Cont. |
| Actuation Actual. | Cont. | - - - | Cont. | - - - | - - - | - - - |
| Mark Warhead. | 18-2 | 18-2 | 18-2 | 18-2 | 18-2 | 18 |
| Serial No. | 3139 | 2092 | 2095 | 3254 | 2053 | 3243 |
| Explosive. | Torp. | Torp. | Torp. | Torp. | Torp. | Torp. |
| Firing Interval. | - - - | 9 sec. | 8 sec. | 6 sec. | 7 sec. | 7 sec. |
| Type Spread. | Div. | Div. | Div. | Div. | Div. | Div. |
| Sea Condition. | 2-3 | 2-3 | 2-3 | 2-3 | 2-3 | 2-3 |
| Overhaul Activity. | Submarine Base, Pearl Harbor, T.H. | | | | | |
| Remarks: | None. | | | | | |

- 45 -

— page 285 —
C-O-N-F-I-D-E-N-T-I-A-L
U.S.S. GROWLER.
Tenth War Patrol.

4. RADAR: ing is requested as an alternative. The SD, APR, SPA,
(Cont'd). and IFF equipment be wired so their power supply may
be derived from either IC or SJ motor-generator. For
this arrangement, we request a small panel with a
master switch for selection of source of power; and
separate power supply switches for the above named
equipment. A similar panel exists for the SJ equip-
ment.

5. SOUND: QB shaft binds badly, which in turn carries away the
coupling between the reduction gear shaft and the
training motor shaft. As this defect could not be
remedied in two refits since yard overhaul, it is
urgently requested that the shaft be pulled and
checked for straightness.

6. No damage sustained as a result of enemy action.

(L). RADIO: Haiku Fox schedules were copied during the major
portion of this patrol on frequencies 6380 Kcs and
1. 9090 Kcs. In the early morning hours (0330 (I) -
0600 (I) ), these two frequencies faded, but good
results were then obtained on 14,390 Kcs.
Frequencies 16.68 Kcs, 4525 Kcs and 17370 Kcs were
also good.

2. Intra-Area Pack radio communications on 2214 Kcs,
2016 Kcs, 2112 Kcs, 2170 Kcs and 2006 Kcs was not
entirely satisfactory due largely to static and
jamming. It is believed that a higher frequency would
be better, preferably in the 4000 Kcs band.

3. Inter-Area frequency (2880 Kcs) was guarded contin-
uously. Both friendly and enemy transmissions were
heard. It is felt that this frequency should be
4155 Kcs. for consistently good results.

4. SHIP TO SHORE:
Altho all frequencies from 4235 Kcs up were tried, the
best frequency was 12,705 Kcs. NPM could not be con-
tacted except for one transmission on 16,940 Kcs,
which NPM receipted for within 10 minutes.

- 47 -

— page 287 —
C-O-N-F-I-D-E-N-T-I-A-L
                                                                U.S.S. GROWLER.
                                                                Tenth War Patrol.

— page 294 —
U.S.S. GROWLER.

                                                                Tenth War Patrol.

C-O-N-F-I-D-E-N-T-I-A-L

— page 297 —
FC5-18/A16-3
Serial 0191
CONFIDENTIAL

FIRST ENDORSEMENT to
U.S.S. GROWLER (SS215)
Report of Tenth War
Patrol.

From:
To:
Via:

Subject:

1. On this tenth war patrol of the GROWLER, the
Commanding Officer acted as commander of a coordinated search
and attack group comprising GROWLER, SEALION and PAMPANITO.
Two convoys were contacted and in each case GROWLER made high-
ly successful attacks.

2. Attack No. 1 was a night surface attack on 31
August against a convoy which had previously been attacked by
another submarine of the group. Three bow shots were fired
at a tanker and three at a freighter. Three hits were made
in the tanker, two in the freighter. Immediately thereafter,
[HANDWRITTEN: four] two stern shots were fired at an escorting destroyer which
was chasing and firing at the GROWLER. One hit was made which
probably accounted for the destroyer. Another escort vessel
was successfully evaded on the surface. Later, while sub-
merged, the remnants of the convoy were sighted, headed for
TAKAO. At that time GROWLER was sighted and depth charged
by a PC boat without damage.

3. Attack No. 2, also a night radar attack, was
made on 12 September 1944 against a large convoy. A down the
throat shot against an attacking destroyer was made, three
bow shots being fired. One hit blew up the destroyer. A
down the throat shot with bow tubes while the submarine is
on the surface is believed to be unique in submarine war-
fare and speaks volumes for the courage and aggressiveness
of the GROWLER. Immediately after hitting the destroyer four
stern shots were fired at two overlapping freighters, regis-
tering two hits in one, one hit in the other. Other escort
vessels were firing at the GROWLER during and after the att-
ack but she managed to evade on the surface in the face of
heavy gun fire. Shortly before sunrise, there was evidence

- 1 -
SUBMARINE SQUADRON EIGHTEEN
Wx
Care of Fleet Post Office
San Francisco, California,
30 September 1944

The Commander Submarine Squadron EIGHTEEN.
The Commander-in-Chief, UNITED STATES FLEET.
(1) The Commander Submarines, SEVENTH FLEET.
(2) The Commander SEVENTH FLEET.

U.S.S. GROWLER (SS215) - Report of Tenth War
Patrol, comments on.

— page 298 —
FC5-18/A16-3                                                               Wx
                                        SUBMARINE SQUADRON EIGHTEEN
Serial 0191                             Care of Fleet Post Office
                                        San Francisco, California,
CONFIDENTIAL                            30 September 1944

Subject:        U.S.S. GROWLER (SS215) - Report of Tenth War
                Patrol, comments on.

— page 299 —
FE24-71/A16-3
Serial 01170
C-O-N-F-I-D-E-N-T-I-A-L

UNITED STATES NAVY
12a/le
13 October 1944.

SECOND ENDORSEMENT to:
USS GROWLER Conf. Ltr.
A16-3 serial 3-44, dated
26 September 1944. Report
of Tenth War Patrol.

From: The Commander Submarines, SEVENTH FLEET.
To : The Commander in Chief, UNITED STATES FLEET.
Via : The Commander, SEVENTH FLEET.

Subject: U.S.S. GROWLER (SS215) - Report of Tenth War Patrol -
Comment on.

1. GROWLER'S Tenth War Patrol was conducted in the Areas
between LUZON and FORMOSA. The Commanding Officer, Lieutenant
Commander T. B. OAKLEY, USN, was in command of a coordinated Search
and Attack Group consisting of GROWLER, PAMPANITO, and SEALION.

2. GROWLER expended twenty-three torpedoes in aggressive
battles with two convoys. The first action began with an attack
on a large convoy split up following an attack by SEALION. Six
torpedoes from the bow tubes were divided between a large tanker and
a large freighter in a well planned night surface attack. Three
hits sank the tanker. Two hits were observed in the AK, but it was
still afloat when last seen. An escorting destroyer sighted GROWLER
and unwisely gave chase. In spite of close and heavy gunfire
GROWLER remained on the surface and five minutes after the first
attack coolly fired four stern shots "down the throat" at a range of
2860 yards. One hit sent this Destroyer to the bottom. A PC took
up the fight, but was evaded on the surface. Daylight and heavy
plane cover prevented GROWLER from getting ahead of the convoy rem-
nants.

3. The next encounter was even more exciting. While
going in for a night surface attack on a large AK, GROWLER took time
out to fire three torpedoes from the bow tubes "down the throat" of
an attacking Destroyer at a range of 1150 yards in one of the most
daring attacks on record. One hit exploded the Destroyer and put it
out of action. Although illuminated by the furiously blazing Des-
troyer which remained afloat for six minutes, and under gun-fire
from a PC on each quarter, GROWLER remained on the surface and fired
four torpedoes from the stern tubes at two overlapping large
freighters. One hit was seen and another heard in one AK, and one
hit was heard in the other. The results of these hits could not be
observed since GROWLER was busy evading the gun-firing escorts.

- 1 -

— page 300 —
12a/1e
FT24-71/A16-3 UNITED STATES NAVY
Serial 01170 October 13, 1944.
C-O-N-F-I-D-E-N-T-I-A-L

SECOND ENDORSEMENT to:
USS GROWLER Conf. Ltr.
A16-3 serial 3-44, dated
30 September 1944, Report
of Tenth War Patrol.

Subject: U.S.S. GROWLER (SS215) - Report of Tenth War Patrol -
Comment on.

few hours later, after daylight, GROWLER attacked and sank a Des-
troyer conducting an A/S search near two ships that had been
damaged by PAMPANITO or SEALION.

4. It is considered quite probable that the three AKs
herein listed as damaged might have sunk, but there is insufficient
evidence at hand to justify that assessment.

5. The award of the Submarine Combat Insignia is author-
ized for this patrol.

6. The Force Commander is proud to again have GROWLER in
this Force, and to congratulate the Commanding Officer, Officers,
and Crew of this valiant ship on their courageous and skilful per-
formance. GROWLER is credited with inflicting the following im-
portant damage on the enemy in a daring and brilliantly successful
patrol:

SUNK
1 - AO (Large - EU) | 10,000 Tons (Attack No. 1A)
1 - DD (EU) | 1,300 Tons (Attack No. 1C)
1 - DD (UN-1 Class - EC) | 2,300 Tons (Attack No. 2A)
1 - DD (FUBUKI Class, AMAGIRI | 1,700 Tons (Attack No. 3)
    GROUP - EC)
TOTAL | 15,300 Tons
      [HANDWRITTEN: 7500]
      [HANDWRITTEN: 22800]

DAMAGED
1 - AK (Large - EU) | 7,500 Tons (Attack No. 1B)
1 - AK (Large - EU) | ~~7,500~~ [HANDWRITTEN: 7,500] Tons (Attack No. 2B)
1 - AK (Large - EU) | ~~7,500~~ [HANDWRITTEN: 7,500] Tons (Attack No. 2B)
TOTAL | ~~22,500~~ [HANDWRITTEN: 22,500] Tons
      [HANDWRITTEN: 75,000]
GRAND TOTAL | ~~[UNCLEAR: illegible typed number]~~ [HANDWRITTEN: 37,000] Tons

- 2 -

[HANDWRITTEN: one of]
[HANDWRITTEN: these was seen]
[HANDWRITTEN: to sink by]
[HANDWRITTEN: another sub,]
[HANDWRITTEN: per Capo.]
[SIGNATURE: J.F. Howard]
[HANDWRITTEN: 14 Oct.]

— page 302 —
[HANDWRITTEN: 1-219]
[HANDWRITTEN: 11 0054]

UNITED STATES FLEET
COMMANDER SEVENTH FLEET

A16-3(F-3-4/whr)
Serial [HANDWRITTEN: 02245]

CONFIDENTIAL

THIRD ENDORSEMENT to:
CO, U.S.S. GROWLER (SS215)
Conf. Ltr. serial 3-44 of
26 September 1944.

From: Commander Seventh Fleet.
To : Commander-in-Chief, United States Fleet.

Subject: U.S.S. GROWLER (SS215) - Report of Tenth War
         Patrol.

1.. Forwarded.

2. The Commander Seventh Fleet takes pleasure in
congratulating the Commanding Officer, officers and crew of
U.S.S. GROWLER for having carried out an outstandingly ag-
gressive and highly successful patrol.

[SIGNATURE: C.E. Van Hook]
C.E. VAN HOOK
Deputy.

Copy to:
ComSubs 7th Flt.
ComSubRon Eighteen
C.O., U.S.S. GROWLER

— page 303 —
FE24-71/A16-3
Serial: 01468
C-O-N-F-I-D-E-N-T-I-A-L

From:
To:
Via:

Subject:

1.
Patrol GROWLER was credited with damaging two large AK's in Attack
No. 2B. The Commanding Officer of PAMPANITO witnessed this attack
and on return to PEARL HARBOR stated that he saw one of the AK's
blow up and sink. In the revised assessment below GROWLER is given
credit accordingly.

2.
damage on the enemy on the Tenth War Patrol.

SUNK
1 - AO (Large - EU)
1 - DD (EU)
1 - DD (UN-1 Class - EC)
1 - AK (Large - EU)
1 - DD (FUBUKI Class, AMAGIRI
      GROUP - EC)
                                TOTAL

DAMAGED
1 - AK (Large - EU)
1 - AK (Large - EU)
                                TOTAL

GRAND TOTAL

R. W. CHRISTIE.

- 1 -
UNITED STATES NAVY
12a/pr
5 December 194..

The Commander Submarines, SEVENTH FLEET.
The Commander in Chief, UNITED STATES FLEET.
The Commander, SEVENTH FLEET.
U.S.S. GROWLER (SS215) - Report of Tenth War Patrol -
Comment on.

In the Second Endorsement to GROWLER's Tenth War

GROWLER is credited with inflicting the following

10,000 Tons (Attack No. 1A)
 1,300 Tons (Attack No. 1C)
 2,300 Tons (Attack No. 2A)
 7,500 Tons (Attack No. 2B)
 1,700 Tons (Attack No. 3)
22,800 Tons

 7,500 Tons (Attack No. 1B)
 7,500 Tons (Attack No. 2B)
15,000 Tons

37,800 Tons

1 0666

— page 304 —
FE24-71/A16-3
Serial 01468
C-O-N-F-I-D-E-N-T-I-A-L

Subject: U.S.S. GROWLER (SS215) - Report of Tenth War Patrol -
         Comment on.

DISTRIBUTION:

Cominch                               (3) - Direct CTG-71.5           (2)
Vice Opnav                            (2) - Direct CTG-71.8           (2)
Vice Opnav Op-23c                     (1)   CTG-71.9                  (2)
ComlstFlt                             (1)   ComSubRon-12              (2)
Com2ndFlt                             (1)   DivComsSubRon-12          (1 ea)
Com7thFlt                             (2)   DivComsSubRon-18          (1 ea)
ComSubs1stFlt                         (30)  DivComsSubRon-26          (1 ea)
ComSubs2ndFlt                         (4)   ComSubDiv-162             (1)
CTF-71                                (7)   S/M School, N.L. Conn.    (2)
CTG-71.3                              (2)   SubAd, Mare Island        (2)
CTG-71.4                              (2)   S/Ms 7thFlt               (1)

[SIGNATURE: P. F. Straub]
P. F. STRAUB, Jr.
Flag Secretary.

THIS LETTER WILL BE DESTROYED PRIOR
TO ENTRY INTO ENEMY CONTROLLED WATERS.

- 2 -
UNITED STATES NAVY
5 December 1944.
12a/pr

— page 306 —
START OF REEL
[HANDWRITTEN: AR. 159-81]
JOB NO. [HANDWRITTEN: F-108]

||||| 1.0
||||| 1.1
||||| 1.25

||||| 4.5
||||| 5.0
||||| 3.5
||||| 4.0
||||| 1.4

||||| 2.8
||||| 2.5
||||| 3.2
||||| 2.2
||||| 3.6
||||| 2.0
||||| 1.8
||||| 1.6

OPERATOR [HANDWRITTEN: L. Frye]

DATE [HANDWRITTEN: 12-8-81]

THIS MICROFILM IS
THE PROPERTY OF
THE UNITED STATES
GOVERNMENT

[SEAL: DEPARTMENT OF DEFENSE / UNITED STATES OF AMERICA]

MICROFILMED BY
NPPSO-NAVAL DISTRICT WASHINGTON
MICROFILM SECTION

REEL TARGET - START AND END
NDW-NPPSO-5210/1 (6-78)

— page 307 —
[HANDWRITTEN: NKS 689]

[HANDWRITTEN: GROWLER (SS-215)]
[HANDWRITTEN: WWII REPORT FILE]

[HANDWRITTEN: ALL MATERIAL ON THIS REEL Is DECLASSIFIED]

[HANDWRITTEN: 35MM]

— page 308 —
DATE 5-7 July 1942
FROM CO - USS GROWLER(SS-215)

SUBJECT SUBMARINE ACTION REPORT, Forwarding of

Forwards, with detail on 7 July counterattack by Japanese,
torpedo firings off KISKA on FIRST WAR PATROL. Claims
3 Japanese destroyers sunk.
(to CINCPAC) 2 reports of
(NORPAC: SUB OPS)
FILED: War Diary

Separately as ORIGINAL; as PHOTOSTAT(O)

MICROSERIAL NO.

NAME GROWLER
SERIAL 139
DATE 18 July 1942

(OVER)

ACTION REPORT OPNAV FORM 3480-13 (11-55)

A

DATE 5-7 July 1942
FROM CO - USS GROWLER(SS-215)

SUBJECT SUBMARINE ACTION REPORTS, Forwarding of

Forwards, with detail on 7 July counterattack by Japanese,
(to COMINCH) 2 reports of torpedo firings off KISKA on
FIRST WAR PATROL. Claims 3 Japanese destroyers sunk.
(NORPAC: SUB OPS)
FILED: War Diary

Separately as ORIGINAL; as PHOTOSTAT

MICROSERIAL NO.

NAME GROWLER
SERIAL 140
DATE 18 July 1942

ACTION REPORT OPNAV FORM 3480-13 (11-55)

A

DATE 23 Aug-13 Sep 1942
FROM CO - USS GROWLER(SS-215)

SUBJECT SUBMARINE ACTION REPORT

Nine form reports for torpedo firings on SECOND WAR PATROL
in FORMOSA area. Claims 1 transport, 1 oiler, 2 freighters
sunk & 1 fishing boat destroyed.
(CENPAC: SUB OPS)
FILED: War Diary

Separately as ORIGINAL

MICROSERIAL NO.

NAME GROWLER
SERIAL
DATE

ACTION REPORT OPNAV FORM 3480-13 (11-55)

— page 309 —
A

DATE 23 September 1942             NAME GROWLER
FROM CO-USS GROWLER(SS-215)        SERIAL none
                                   DATE 30 September 1942

SUBJECT GROUNDING Report

Report(to SUBSPAC) of touching ground while maneuvering
to go along side of USS FULTON at Midway Island.

(CENPAC: SUB OPS)
FILED: War Diary
        Separately as ORIGINAL; as CARBON COPY

MICROSERIAL NO.                                                ACTION REPORT OPNÁV FORM 3840-13 (10-55)
                                                                                             B-21013

DATE 16 Jan-7 Feb 1943             NAME GROWLER
FROM CO - USS GROWLER(SS-215)      SERIAL
                                   DATE

SUBJECT SUBMARINE ACTION REPORT

Four form reports covering torpedo firings on FOURTH WAR
PATROL in Admiralty Islands. Claims 1 transport sunk, 1
transport and 1 gunboat damaged.
(SOPAC: SUB OPS)
FILED: War Diary
        Separately as ORIGINAL

MICROSERIAL NO.                                                ACTION REPORT OPNAV FORM 3840-13 (11-55)
                                                                                             B-20003

DATE 7 February 1943               NAME GROWLER
FROM Commander Submarine Squadron Eight SERIAL 054
                                   DATE 25 May 1943

SUBJECT USS GROWLER (SS 215); Repair of Battle Damage.

Report of damage received by USS GROWLER as a result of
ramming an enemy patrol vessel on 7 Feb. 1943. Repairs
were made by USS FULTON and the EVANS DEAKIN COMPANY.
(NorPac:US SUB ACTION:B-1)
FILED: War Diary
        Separately as ORIGINAL under ComSubRon 8;

MICROSERIAL NO.                                                ACTION REPORT OPNAV-29-100 REV. 12-46
                                                                                             6171

— page 310 —
DATE 29 AUG-14 Sep 1944
FROM CROSS INDEX CARD
NAME GROWLER
SERIAL
DATE

SUBJECT Coordinated Patrol Report
Report of THIRTEENTH Coordinated Attack Group under Cdr.T.
B.Oakley(Ben's BUSTERS) in Luzon Straits area. Sank or
damaged 117,100 tons of enemy shipping.

FILED: War Diary
Separately under TASK GROUP 17.17 no ser of 20 Sep 44

MICROSERIAL NO.
-
ACTION REPORT OPNAV FORM 38NO-13 (10-55)
R-31012

USS GROWLER

Record of Proceedings of Investigation of the Loss of
USS GROWLER

Investigation conducted on board the USS ANTHEDON by
order of ComSubs 7th Flt to inquire into the circum-
stances of this loss while GROWLER was on 11th War
Patrol. ComSubs7thFlt ser 00050 of 23 December 1944.

From COM7THFLT BOX #S-5096; A17-25

— page 311 —
S815/A16-3
Serial 130
DECLASSIFIED [HANDWRITTEN: A10-2/EG3]
[HANDWRITTEN: A16-2 / SA]

[HANDWRITTEN: 1st Cpy Original]
[STAMP: RECEIVED JUL 21 P.M. 1942]

U. S. S. GROWLER (215)

CONFIDENTIAL

Care of Fleet Post Office,
San Francisco, Cal.
July 10, 1942.

From: The Commanding Officer.
To : The Commander-in-Chief, U.S. Pacific Fleet.

Subject: Report of Action.

Reference: (a) Article 974, U.S. Navy Regulations.

1. While on patrol station, this vessel encountered
and was attacked by one Japanese destroyer (Fubuki class).

2. The following pertinent data is submitted:

Latitude 53°01' N., Longitude 177°36' East.
TIME: 1400 - 2230, July 7, 1942 (Zone -12).
ENEMY FORCES: 1 Destroyer.
OWN FORCES: Own ship, (1 Submarine).
WEATHER: Foggy and hazy. Sea smooth, slight swells.
TYPE ATTACK: Depth Charge.
DESCRIPTION: Contacted enemy DD while on surface at 13 knots,
 bearing North also on Easterly course,
 speed 0-3. DD was conducting A/S sound patrol. This
 vessel had previously sighted what appeared to be
 a heavy cruiser and was searching to re-establish
 contact. Enemy turned immediately to attack, at
 high speed. Evasion tactics were used, running si-
 lent at 250 feet, keel depth. Enemy dropped four-
 teen (14) depth charges.

DAMAGE TO ENEMY: None.
DAMAGE TO OWN SHIP: Sustained. QB sound head damaged, stern plane
 shafting rendered noisy and jerky. Shafting noise
 evident by clicking when over 1/3 speed.

[SIGNATURE: H. W. Gilmore]
H. W. GILMORE.

Copy to:
Vice C.N.O.

— page 312 —
ENCLOSURE (A) TO
CO. GROWLER serial
No. 139.
CONFIDENTIAL:

U. S. S. GROWLER (215)

From: The Executive Officer.
To: The Commanding Officer.
Subject: Report of Action.
Reference: (a) Article 948, U.S. Navy Regulations.

1. During the action in which this vessel engaged three
Japanese destroyers near Kiska, Aleutian Islands, the morale of
"all hands" was excellent and the fighting efficiency of the ship
represented the highest standards of the Naval Service.

2. The prompt action of the torpedomen in withdrawing
torpedoes and in making the tubes ready again; the cool function-
ing of the men at the sound gear; and the control of the ship run-
ning silent, submerged, indicate that all departments are well
trained and administered in accordance with the best traditions of
the U.S. Navy.

3. Although no individuals are singled out for commenda-
tion, it is recommended that an appropriate entry of commendation
be entered in the service record of all enlisted personnel.

[SIGNATURE: A. F. Schade]
A. F. SCHADE.

— page 313 —
SS215/A16-3 U. S. S. GROWLER (215)

Care of Fleet Post Office,
San Francisco, California,
July 10, 1942.

From: The Executive Officer.
To : The Commanding Officer.
Subject: Report of Action.
Reference: (a) Article 940, U. S. Navy Regulations.

1. During the action with one Japanese destroyer,
in which this vessel was attacked with depth charges, the
crew again demonstrated the high morale demanded of the Naval
Service.

[SIGNATURE: W. Schade]
A. P. SCHADE.

ENCLOSURE (A).

— page 314 —
CONFIDENTIAL
U. S. SUBMARINE ACTION REPORT
U.S.S. GROWLER Date: July 5, 1942
Time 0413 to 0601 (-12) Location: Latitude 52-00-00-N
Longitude 177-39-00-E

INSTRUCTIONS
(a) ATTACK FIRST - THEN COLLECT DATA FOR THIS REPORT.
(b) DO NOT "GUN DECK" THIS REPORT - IF DATA CANNOT BE ESTIMATED WITH REASONABLE ACCURACY
ENTER A DASH IN SPACE FOR WHICH NO DATA IS AVAILABLE.
(c) DRAW A CIRCLE AROUND THE APPROPRIATE ENTRY IN THIS REPORT WHEREVER SUITABLE.

WEATHER CONDITIONS Hazy and foggy.
SEA CONDITIONS Calm, slight swell.
SOUND CONDITIONS (if applicable) Fair
TYPE OF OPERATIONS Patrol off Kiska, Aleutian Islands.

SPECIFIC OBJECTIVE Observe Kiska and attack enemy forces encountered.

FORCES ENGAGED: OWN One submarine.

(Name and Type) ENEMY Three destroyers (Amagiri or Fubuki class) at
anchor near Reynard Cove.
TYPE OF ATTACK (Own Enemy - scratch one) Torpedo - submerged.

BRIEF DESCRIPTION Sighted 3 vessels, estimated range 8000 yards. Believed
to be cruisers leaving Kiska to Eastward. Upon closing
discovered they were destroyers at anchor. Ran in slowly,
running silent, and attacked.

WEAPONS EMPLOYED:
Own Torpedoes.
Enemy Torpedoes, and later bombs.

AMMUNITION EXPENDED 4 Torpedoes, Mark 14-1.

EVASIVE TACTICS EMPLOYED:
Own Depth, silent running, steady withdrawal.
Enemy None

CSPF-4-7-42-1000 ENCLOSURE D

— page 315 —
FOR TORPEDO ATTACK (Own):

Firing range (1) 750 Yds (2) 700 Yds (3)1150 Yds
(4) 1000 Yds.
Keel depth [HANDWRITTEN: 63 feet]
Straight/curved shot(s): [HANDWRITTEN: Straight]
Type spread [HANDWRITTEN: None]

Attack: (unopposed [HANDWRITTEN: X])
(check) (opposed by air screen/close screen)

Detected: (prior to firing [HANDWRITTEN: X] on third destroyer.)
(check) (after firing [HANDWRITTEN: X] After firing on first two.)
[HANDWRITTEN: (undetected)]

RESULTS: (Certain) [HANDWRITTEN: Two destroyers hit amidships, magnetic explosion, side]
[HANDWRITTEN: opened. Third destroyer hit under foremast, magnetic]
[HANDWRITTEN: explosion, caught on fire, blazing two hours later.]
[HANDWRITTEN: Three heavy explosions and 53 lighter explosions heard]
[HANDWRITTEN: after torpedo hits.]

(Estimated) [HANDWRITTEN: Two sunk, 1 on fire and probably sunk.]

DAMAGE TO OWN SHIP [HANDWRITTEN: Two aircraft bombs damaged JK-C sound head and shaft,]
[HANDWRITTEN: putting it out of commission.]

BRIEF REMARKS [HANDWRITTEN: Third torpedo failed to explode. Believed due to]
[HANDWRITTEN: failure of magnetic exploder or faulty depth. Torpedo ran]
[HANDWRITTEN: hot and straight.]

TYPE ATTACK
(check)
Periscope
[HANDWRITTEN: X] Periscope and TDC
Sound
Sound and TDC

— page 316 —
CONFIDENTIAL

U. S. SUBMARINE ACTION REPORT

U.S.S. CROWIER Date: July 7 1942
Time 1758 to 2230 (-12) Location: Latitude 52-07-00N
Longitude 177-48-00-E

INSTRUCTIONS
(a) ATTACK FIRST - THEN COLLECT DATA FOR THIS REPORT.
(b) DO NOT "GUN DECK" THIS REPORT - IF DATA CANNOT BE ESTIMATED WITH REASONABLE ACCURACY
ENTER A DASH IN SPACE FOR WHICH NO DATA IS AVAILABLE.
(c) DRAW A CIRCLE AROUND THE APPROPRIATE ENTRY IN THIS REPORT WHEREVER SUITABLE.

WEATHER CONDITIONS Foggy
SEA CONDITIONS Calm
JUND CONDITIONS (if applicable) Good
TYPE OF OPERATIONS Patrol off Kiska, Aleutian Islands.

SPECIFIC OBJECTIVE Observe Kiska and attack enemy forces encountered.

FORCES ENGAGED: OWN One submarine.

(Name and Type) ENEMY One destroyer (large)

TYPE OF ATTACK (XXXX Enemy - scratch one) Depth charge

BRIEF DESCRIPTION Contacted on surface, destroyer lying to probably lis-
tening. Submarine underway at 15 knots, both ships headed
East, destroyer to North, range 2000 yards. Submarine probably
sighted first. Impossible for submarine to attack. started
evasion.
WEAPONS EMPLOYED:
Own None
Enemy 14 depth charges (first attack 11, 2nd - 3).

AMMUNITION EXPENDED None

EVASIVE TACTICS EMPLOYED:
Own Depth, silent running, high speed knuckles, keeping
enemy bearing aft.
Enemy None

CSPF-4-7-42-1000 ENCLOSURE D

— page 317 —
FOR TORPEDO ATTACK (Own):
Firing range [HANDWRITTEN: None]
Keel depth [HANDWRITTEN: -]
Straight/curved shot(s) [HANDWRITTEN: -]
Type spread [HANDWRITTEN: -]

TYPE ATTACK
(check)
Periscope
Periscope and TDC
Sound
Sound and TDC

Attack: (unopposed)
(check) (opposed by air screen/close screen
Detected: (prior to firing
(check) (after firing
(undetected

RESULTS: (Certain) [HANDWRITTEN: Attack evaded. Closest depth charge 50 to 100 yards]
[HANDWRITTEN: No charge exploded below vessel.]
[HANDWRITTEN: 200 feet. No damage to enemy.]
(Estimated) [HANDWRITTEN: None]

DAMAGE TO OWN SHIP [HANDWRITTEN: QB head partially damaged. Sound level increased due]
[HANDWRITTEN: to: (a) jerky operation of stern planes (b) clicking noise at propeller]
[HANDWRITTEN: speeds over 2 knots.]
BRIEF REMARKS [HANDWRITTEN: This vessel was searching for a suspected heavy cruiser]
[HANDWRITTEN: which had been sighted by us in this locality at 1400 (-12). When the]
[HANDWRITTEN: present contact was made, destroyer swung South directly at this vessel]
[HANDWRITTEN: at estimated speed of 15 to 25 knots (bow wave to forecastle). Submarine]
[HANDWRITTEN: went to 250 feet and evaded attack.]

— page 318 —
SS215/A16-3
Serial 140
DECLASSIFIED
CONFIDENTIAL

U. S. S. GROWLER (215)

COMMANDER IN CHIEF
U. S. FLEET
CARRIER FLEET POST OFFICE,
San Francisco, Cal.,
July 13, 1942.

From: The Commanding Officer.
To : The Commander-in-Chief, U.S. Fleet.
Subject: Report of Action.

1. This vessel encountered and attacked three large
Japanese destroyers of the Fubuki class while on patrol. The
following pertinent data is submitted:

PLACE: Kiska Harbor, Aleutian Islands.
TIME: First contact 0413, (zone -10), July 5, 1942.
ENEMY FORCES ENGAGED: (3) Fubuki class Japanese destroyers,
at anchor.
OWN FORCES ENGAGED: Own submarine.
TYPE ATTACK: Submerged, periscope and T.D.C. Silent running.
WEAPONS USED: Four (4) torpedoes.
WEATHER: Sea smooth, slight swell; foggy and hazy. Land
partly visible in back ground.

DESCRIPTION: See track.

Sighted three vessels, range about 8000 yards; approached
running silent, discovered they were large DD's at anchor. Fired
1 torpedo at each DD in succession. First two hit, DD's blew up;
believed sunk. Third torpedo passed under, magnetic exploder failed
to function. Fired fourth torpedo at third DD; hit. Two hours
later DD seen blazing.

DAMAGES SUSTAINED: Aircraft bombs damaged T.D.C. sound head and
periscope damaged. Noise level of
ship increased.

2. The conduct of all officers and enlisted personnel
was efficient and commendable; and in keeping with the highest
traditions of the Naval Service.

[SIGNATURE: H.W. Gilmore]
H.W. GILMORE.

— page 319 —
CONFIDENTIAL

U. S. SUBMARINE ACTION REPORT

U.S.S. GRENADIER Date: July 5, 1942
Time 0413 to 0601 (-12) Location: Latitude 52-00-00-N
Longitude 177-39-00-E

INSTRUCTIONS
(a) ATTACK FIRST - THEN COLLECT DATA FOR THIS REPORT.
(b) DO NOT "GUN DECK" THIS REPORT - IF DATA CANNOT BE ESTIMATED WITH REASONABLE ACCURACY
ENTER A DASH IN SPACE FOR WHICH NO DATA IS AVAILABLE.
(c) DRAW A CIRCLE AROUND THE APPROPRIATE ENTRY IN THIS REPORT WHEREVER SUITABLE.

WEATHER CONDITIONS Hazy and foggy.
SEA CONDITIONS Calm, slight swell.
SOUND CONDITIONS (if applicable) Fair
TYPE OF OPERATIONS Patrol off Kiska, Aleutian Islands.

SPECIFIC OBJECTIVE Observe Kiska and attack enemy forces encountered.

FORCES ENGAGED: OWN One submarine.

(Name and Type) ENEMY Three destroyers (Amagiri or Hibuki class) at
anchor near Reynard Cove.
TYPE OF ATTACK (Own [UNCLEAR: scratch one]) Torpedo - submerged.

BRIEF DESCRIPTION Sighted 3 vessels, estimated range 8000 yards. Believed
to be cruisers leaving Kiska to Eastward. Upon closing
discovered they were destroyers at anchor. Ran in slowly,
and attacked.

WEAPONS EMPLOYED:
Own Torpedoes.
Enemy Torpedoes, and later bombs.

AMMUNITION EXPENDED 4 Torpedoes, Mark 14-1.

EVASIVE TACTICS EMPLOYED:
Own Depth, silent running, steady withdrawal.
Enemy None

[UNCLEAR: CSPI 6-7-42-1000] ENCLOSURE D

— page 320 —
FOR TORPEDO ATTACK (Own):
Firing range:(1) 750 Yds (2) 700 Yds (3) 1150 Yds
(4) 1000 Yds.
Keel depth [HANDWRITTEN: 03 feet]
Straight [TYPED: magnetic (crossed out)]
Type spread [HANDWRITTEN: None]

Attack: (unopposed [HANDWRITTEN: X]) (check) (opposed by air screen close)
Detected: (prior to firing [HANDWRITTEN: X] on the third destroyer.)
(check) (after firing [HANDWRITTEN: X] after firing on first two.
[HANDWRITTEN: undetected]

TYPE ATTACK
(check)
Periscope
[HANDWRITTEN: X] Periscope and TDC
Sound
Sound and TDC

RESULTS: (Certain) [HANDWRITTEN: Two destroyers hit amidships, magnetic explosion, sides]
[HANDWRITTEN: opened. Third destroyer hit under foremast, magnetic]
[HANDWRITTEN: explosion, caught on fire, blazing two hours later.]
[HANDWRITTEN: Three heavy explosions and 03 lighter explosions heard]
[HANDWRITTEN: after torpedo hits.]

(Estimated) [HANDWRITTEN: Two sunk, 1 on fire and probably sunk.]

DAMAGE TO OWN SHIP [HANDWRITTEN: Two aircraft bombs damaged JK-C sound head and shaft,]
[HANDWRITTEN: putting it out of commission.]

BRIEF REMARKS [HANDWRITTEN: Third torpedo failed to explode. Believed due to]
[HANDWRITTEN: failure of magnetic exploder or faulty depth. Torpedo ran]
[HANDWRITTEN: hot and straight.]

— page 321 —
[HANDWRITTEN:] MREI
[HANDWRITTEN:] 05-55-30
[HANDWRITTEN:] 05-56-05
[HANDWRITTEN:] C 317
[HANDWRITTEN:] FIRING RANGE 250
[HANDWRITTEN:] C 305
[HANDWRITTEN:] FIRING RANGE 209
[HANDWRITTEN:] FIRE 2
[HANDWRITTEN:] 05-57-00
[HANDWRITTEN:] HIT 05-57-41
[HANDWRITTEN:] HIT 05-56-05
[HANDWRITTEN:] HIT 06-00-00
[HANDWRITTEN:] 227 FIRING RANGE 1000
[HANDWRITTEN:] C 090

— page 322 —
[STAMP: DECLASSIFIED]
[HANDWRITTEN: Folder 3rd Cat Original]
[HANDWRITTEN: (2)]
[CROSSED OUT TYPED: CONFIDENTIAL]
Reg. No. [HANDWRITTEN: 13]
R.S. No. 10 01135
U. S. SUBMARINE ACTION REPORT
U.S.S. GROWLER (SS215) Date: August 23 1942
Time 1952 (-8) Location: Latitude 22 - 15 N
Longitude 121 - 20 E

INSTRUCTIONS
(a) ATTACK FIRST - THEN COLLECT DATA FOR THIS REPORT.
(b) DO NOT "GUN DECK" THIS REPORT - IF DATA CANNOT BE ESTIMATED WITH REASONABLE ACCURACY
ENTER A DASH IN SPACE FOR WHICH NO DATA IS AVAILABLE.
(c) DRAW A CIRCLE AROUND THE APPROPRIATE ENTRY IN THIS REPORT WHEREVER SUITABLE.

WEATHER CONDITIONS Clear, visibility unlimited, bright full moon.
SEA CONDITIONS Calm
SOUND CONDITIONS (if applicable) -
TYPE OF OPERATIONS Offensive War Patrol off TAIWAN.

SPECIFIC OBJECTIVE Attack on freighter.

FORCES ENGAGED: OWN One (1) submarine.

(Name and Type) ENEMY One (1) 3000 ton freighter.

TYPE OF ATTACK (Own [CROSSED OUT TYPED: Enemy] - scratch one) Torpedoes on surface

BRIEF DESCRIPTION Approached at night on surface from land side with
target silhouetted in moon. Submarine sighted by target at 2000
yards. Target kept stern pointed at submarine.

WEAPONS EMPLOYED:
Own Torpedoes
Enemy

AMMUNITION EXPENDED Two torpedoes.

EVASIVE TACTICS EMPLOYED:
Own None
Enemy Kept stern pointed at submarine. Ran into shallow
water.
ENCLOSURE D
CSPF-4-7-42-1000

— page 323 —
FOR TORPEDO ATTACK (Own):
Firing range [HANDWRITTEN: 600-800 yards]
Keel depth [HANDWRITTEN: 17 feet]
Straight/[HANDWRITTEN: X]curved shot(s)
Type spread [HANDWRITTEN: None]

Attack: (unopposed [HANDWRITTEN: X]
(check) (opposed by air screen/close screen

Detected: (prior to firing [HANDWRITTEN: X]
(check) (after firing
(undetected

RESULTS: (Certain) [HANDWRITTEN: Missed. Target escaped.]

(Estimated) [HANDWRITTEN: -]

DAMAGE TO OWN SHIP [HANDWRITTEN: None]

BRIEF REMARKS [HANDWRITTEN: None]

TYPE ATTACK
(check)
Periscope
[HANDWRITTEN: TBT] Periscope and TDC
Sound
Sound and TDC

— page 324 —
10 01135

CONFIDENTIAL
SUBMARINE ACTION REPORT
U.S.S. GROWLER (SS215) Date: August 25 1942
Time 0757 (-8) Location: Latitude 22 - 27 N
Longitude 120 - 16 E

INSTRUCTIONS
(a) ATTACK FIRST - THEN COLLECT DATA FOR THIS REPORT.
(b) DO NOT "GUN DECK" THIS REPORT - IF DATA CANNOT BE ESTIMATED WITH REASONABLE ACCURACY
ENTER A DASH IN SPACE FOR WHICH NO DATA IS AVAILABLE.
(c) DRAW A CIRCLE AROUND THE APPROPRIATE ENTRY IN THIS REPORT WHEREVER SUITABLE.

WEATHER CONDITIONS Clear, visibility unlimited, slightly overcast.
SEA CONDITIONS Flat calm
SOUND CONDITIONS (if applicable) Good
TYPE OF OPERATIONS Offensive War Patrol off TAIWAN.

SPECIFIC OBJECTIVE Attack on passenger freighter.

FORCES ENGAGED: OWN One (1) submarine.

(Name and Type) ENEMY One (1) 10,000 ton passenger-freighter, four (4)
patrol boats (sampans), one plane.
TYPE OF ATTACK (Own/[CROSSED OUT: Enemy] - scratch one) Submerged torpedo

BRIEF DESCRIPTION Made approach on non-zigging target. Closest range
obtainable 2500 yards. Fired due to importance of target. Target
maneuvered to avoid.
WEAPONS EMPLOYED:
Own torpedoes
Enemy Guns and depth charge.
AMMUNITION EXPENDED Three torpedoes

EVASIVE TACTICS EMPLOYED:
Own Ran off silently at periscope depth and 140 feet.
Enemy Maneuvered to avoid torpedoes.

CSPF-4-7-42-1000 ENCLOSURE D

— page 325 —
FOR TORPEDO ATTACK (Own):

Firing range [HANDWRITTEN: 2500] yards
Keel depth [HANDWRITTEN: 64] feet
Straight/curved shot(s) [HANDWRITTEN: 1]
Type spread [HANDWRITTEN: None]

Attack: (unopposed
(check) (opposed by air screen/close screen [HANDWRITTEN: X]

Detected: (prior to firing
(check) (after firing [HANDWRITTEN: X]
(undetected

RESULTS: (Certain) [HANDWRITTEN: Missed]

(Estimated)

DAMAGE TO OWN SHIP [HANDWRITTEN: None]

BRIEF REMARKS

TYPE ATTACK
(check)
Periscope
Periscope and TDC [HANDWRITTEN: X]
Sound
Sound and TDC

— page 326 —
CONFIDENTIAL
U. S. SUBMARINE ACTION REPORT
U.S.S. GROWLER (SS215) Date: August 25. 1942
Time 1358(08) Location: Latitude 22 - 33N
Longitude 120 - 10E
INSTRUCTIONS
(a) ATTACK FIRST - THEN COLLECT DATA FOR THIS REPORT.
(b) DO NOT "GUN DECK" THIS REPORT - IF DATA CANNOT BE ESTIMATED WITH REASONABLE ACCURACY
ENTER A DASH IN SPACE FOR WHICH NO DATA IS AVAILABLE.
(c) DRAW A CIRCLE AROUND THE APPROPRIATE ENTRY IN THIS REPORT WHEREVER SUITABLE.

WEATHER CONDITIONS Clear, unlimited visibility, slightly overcast.
SEA CONDITIONS Flat calm
SOUND CONDITIONS (if applicable) Good
TYPE OF OPERATIONS Offensive Patrol off TAIWAN.

SPECIFIC OBJECTIVE Transport.

FORCES ENGAGED: OWN One (1) Submarine.

(Name and Type) ENEMY

TYPE OF ATTACK (Own/[HANDWRITTEN: Enemy]/ - scratch one) Torpedoes

BRIEF DESCRIPTION Approached zig-zagging target. Fired at 900 yds. One hit.
Target took angle down by bow. Stopped. Fired one more torpedo - hit.
Went deep to avoid depth charges.
WEAPONS EMPLOYED:
Own Torpedoes
Enemy Gun and depth charges.
AMMUNITION EXPENDED Four (4) torpedoes

EVASIVE TACTICS EMPLOYED:
Own Silent running at 275 feet
Enemy None

— page 327 —
FOR TORPEDO ATTACK (Own):
    Firing range 900-1000 yards.
    Keel depth 66 feet
    Straight/CURVED shot(s)
    Type spread 2° divergent

    Attack: (unopposed)
    (check) (opposed by AIR SCREEN, close screen x
    Detected: (prior to firing
    (check) (after firing x
    (undetected

RESULTS: (Certain) Two torpedo hits, one under forecastle, one under
bridge. A.P. had down angle by bow, screw clear of water when last
seen.
    (Estimated) Probably sank AP but it was not observed to sink.

DAMAGE TO OWN SHIP None

BRIEF REMARKS

TYPE ATTACK
(check)
X Periscope
Periscope and TDC
Sound
Sound and TDC

— page 328 —
10 01135
[STAMP: COMMANDER IN CHIEF]
[STAMP: U.S. FLEET]
[STAMP: RECEIVED]
[HANDWRITTEN: ✓]

CONFIDENTIAL
U. S. SUBMARINE ACTION REPORT
Date: [HANDWRITTEN: August 30,] [HANDWRITTEN: 1942]
U.S.S. [HANDWRITTEN: GROWLER (SS215)]
Time [HANDWRITTEN: 2204 (-8)]
Location: Latitude [HANDWRITTEN: 23 - 23 N - 17 14 55]
Longitude [HANDWRITTEN: 122 - 12 E]

INSTRUCTIONS
(a) ATTACK FIRST - THEN COLLECT DATA FOR THIS REPORT.
(b) DO NOT "GUN DECK" THIS REPORT - IF DATA CANNOT BE ESTIMATED WITH REASONABLE ACCURACY
ENTER A DASH IN SPACE FOR WHICH NO DATA IS AVAILABLE.
(c) DRAW A CIRCLE AROUND THE APPROPRIATE ENTRY IN THIS REPORT WHEREVER SUITABLE.

WEATHER CONDITIONS [HANDWRITTEN: Clear, bright moonlight, excellent visibility except]
[HANDWRITTEN: for occasional rain squalls.]
SEA CONDITIONS [HANDWRITTEN: Moderate.]
SOUND CONDITIONS (if applicable) [HANDWRITTEN: -]
TYPE OF OPERATIONS [HANDWRITTEN: Offensive Patrol off TAIWAN.]

SPECIFIC OBJECTIVE [HANDWRITTEN: Freighter]

FORCES ENGAGED: OWN [HANDWRITTEN: One (1) submarine.]

(Name and Type) ENEMY [HANDWRITTEN: One (1) 6000 ton freighter.]

TYPE OF ATTACK (Own [HANDWRITTEN: Enemy] - scratch one) [HANDWRITTEN: Torpedoes on surface.]

BRIEF DESCRIPTION [HANDWRITTEN: Sighted target at 4000 yards. Ran with target, closing]
[HANDWRITTEN: track at high speed. Cut in and fired on 100° track, range 1200 Yds.]

WEAPONS EMPLOYED:
Own [HANDWRITTEN: Torpedoes]
Enemy [HANDWRITTEN: Gun.]
AMMUNITION EXPENDED [HANDWRITTEN: Three torpedoes.]

EVASIVE TACTICS EMPLOYED:
Own [HANDWRITTEN: Submerged to avoid projectiles.]
Enemy [HANDWRITTEN: Maneuvered to avoid torpedoes. Ran directly away,]
[HANDWRITTEN: firing gun aft.]

CSPF-4-7-42-1000 ENCLOSURE D

— page 329 —
FOR TORPEDO ATTACK (Own):
Firing range [HANDWRITTEN: 1200 yards]
Keel depth [HANDWRITTEN: 22 feet]
Straight/[HANDWRITTEN: curved] shot(s)
Type spread [HANDWRITTEN: 2° divergent.]

Attack: (unopposed [HANDWRITTEN: X])
(check) (opposed by air screen/close screen)

Detected: (prior to firing)
(check) (at [HANDWRITTEN: after] firing [HANDWRITTEN: X])
(undetected)

RESULTS: (Certain) [HANDWRITTEN: Missed]

(Estimated)

TYPE ATTACK
(check)
[HANDWRITTEN: TBT]
Periscope
TBT Periscope and TDC
Sound
Sound and TDC

DAMAGE TO OWN SHIP [HANDWRITTEN: None]

BRIEF REMARKS

— page 330 —
10 01135

CONFIDENTIAL
U. S. SUBMARINE ACTION REPORT
U.S.S. [HANDWRITTEN: GROWLER (SS215)] Date: [HANDWRITTEN: August 31] [HANDWRITTEN: 1942]
Time [HANDWRITTEN: 0155 (-8)] Location: Latitude [HANDWRITTEN: 25 - 29 N]
Longitude [HANDWRITTEN: 122 - 37 E]

INSTRUCTIONS
(a) ATTACK FIRST - THEN COLLECT DATA FOR THIS REPORT.
(b) DO NOT "GUN DECK" THIS REPORT - IF DATA CANNOT BE ESTIMATED WITH REASONABLE ACCURACY
ENTER A DASH IN SPACE FOR WHICH NO DATA IS AVAILABLE.
(c) DRAW A CIRCLE AROUND THE APPROPRIATE ENTRY IN THIS REPORT WHEREVER SUITABLE.

WEATHER CONDITIONS [HANDWRITTEN: Clear, bright moonlight, unlimited visibility.]
SEA CONDITIONS [HANDWRITTEN: Moderate]
SOUND CONDITIONS (if applicable) [HANDWRITTEN: Excellent]
TYPE OF OPERATIONS [HANDWRITTEN: Offensive Patrol off TAIWAN.]

SPECIFIC OBJECTIVE [HANDWRITTEN: Freighter]

FORCES ENGAGED: OWN [HANDWRITTEN: One (1) Submarine. Identified as similar to]
[HANDWRITTEN: TASAN MARU, #36, in Recognition Silhouettes of Japanese Merchantmen.]
(Name and Type) ENEMY [HANDWRITTEN: One 5,500 ton freighter.]

TYPE OF ATTACK (Own/Enemy - scratch one) [HANDWRITTEN: Torpedoes.]

BRIEF DESCRIPTION [HANDWRITTEN: Sighted on surface. Got ahead of target. Submerged.]
[HANDWRITTEN: Made periscope approach. Fired on 90° track.]

WEAPONS EMPLOYED:
Own [HANDWRITTEN: Torpedoes]
Enemy [HANDWRITTEN: None]

AMMUNITION EXPENDED [HANDWRITTEN: Two (2) torpedoes]

EVASIVE TACTICS EMPLOYED:
Own [HANDWRITTEN: None]
Enemy [HANDWRITTEN: None]

CSPF-4-7-42-1000 ENCLOSURE D

— page 331 —
FOR TORPEDO ATTACK (Own):
    Firing range [HANDWRITTEN: 1000 yards]
    Keel depth [HANDWRITTEN: 63 feet]
    Straight [HANDWRITTEN: curved] shot(s)
    Type spread [HANDWRITTEN: None]

    Attack: (unopposed [HANDWRITTEN: X]
    (check) (opposed by air screen/close screen

    Detected: (prior to firing
    (check) (after firing
    (undetected [HANDWRITTEN: X]

    RESULTS: (Certain) [HANDWRITTEN: Two hits. Freighter broke in two and sank in]
    [HANDWRITTEN: 90 seconds.]

    (Estimated)

    DAMAGE TO OWN SHIP [HANDWRITTEN: None]

    BRIEF REMARKS

TYPE ATTACK
(check)
    Periscope
    [HANDWRITTEN: X] Periscope and TDC
    Sound
    Sound and TDC

— page 332 —
10 0 1135

CONFIDENTIAL

U. S. SUBMARINE ACTION REPORT

U.S.S. GROWLER (SS215)
Date: September 4 1942
Time 0410 (-3)
Location: Latitude 25 - 41 N
Longitude 122 - 34 E

INSTRUCTIONS
(a) ATTACK FIRST - THEN COLLECT DATA FOR THIS REPORT.
(b) DO NOT "GUN DECK" THIS REPORT - IF DATA CANNOT BE ESTIMATED WITH REASONABLE ACCURACY
ENTER A DASH IN SPACE FOR WHICH NO DATA IS AVAILABLE.
(c) DRAW A CIRCLE AROUND THE APPROPRIATE ENTRY IN THIS REPORT WHEREVER SUITABLE.

WEATHER CONDITIONS Clear, unlimited visibility, slightly overcast
SEA CONDITIONS Moderate
SOUND CONDITIONS (if applicable) -

TYPE OF OPERATIONS Offensive War Patrol off TAIWAN.

SPECIFIC OBJECTIVE Patrol or fishing boat.

FORCES ENGAGED: OWN One (1) submarine

(Name and Type) ENEMY One patrol or fishing boat.

TYPE OF ATTACK (Own [SCRATCHED OUT: ENEMY] - scratch one) Gun (3"/50 cal. and Machine)

BRIEF DESCRIPTION Darkened boat discovered trailing submarine near
desired diving point. Attacked with gunfire.

WEAPONS EMPLOYED:
Own .50 and .30 cal., and 3"/50
Enemy None

AMMUNITION EXPENDED Six (6) rounds 3"/50 service; 100 rounds each .50
and .30 cal.

EVASIVE TACTICS EMPLOYED:
Own None
Enemy Attempted to escape by running directly away.

CSPF-4-7-42-1000
ENCLOSURE D

— page 333 —
FOR TORPEDO ATTACK (Own):

Firing range
Keel depth
Straight/curved shot(s)
Type spread

Attack: (unopposed
(check) (opposed by air screen/close screen

Detected: (prior to firing
(check) (after firing
(undetected

RESULTS: (Certain) [HANDWRITTEN: Killed crew. Two hits in hull by 3"/50.]
[HANDWRITTEN: Slowly sinking when last seen.]

(Estimated)

DAMAGE TO OWN SHIP [HANDWRITTEN: None]

BRIEF REMARKS
TYPE ATTACK
(check)
Periscope
Periscope and TDC
Sound
Sound and TDC

— page 334 —
CONFIDENTIAL
U. S. SUBMARINE ACTION REPORT
U.S.S. GROWLER (SS215) Date: September 4, 1942
Time 0847 (-8) Location: Latitude 25 -43 N
Longitude 122 - 38 E

INSTRUCTIONS
(a) ATTACK FIRST - THEN COLLECT DATA FOR THIS REPORT.
(b) DO NOT "GUN DECK" THIS REPORT - IF DATA CANNOT BE ESTIMATED WITH REASONABLE ACCURACY
ENTER A DASH IN SPACE FOR WHICH NO DATA IS AVAILABLE.
(c) DRAW A CIRCLE AROUND THE APPROPRIATE ENTRY IN THIS REPORT WHEREVER SUITABLE.

WEATHER CONDITIONS Clear, unlimited visibility, slightly overcast.
SEA CONDITIONS Moderate
SOUND CONDITIONS (if applicable) Excellent
TYPE OF OPERATIONS Offensive Patrol off TAIWAN.

SPECIFIC OBJECTIVE Naval Auxiliary Tanker

FORCES ENGAGED: OWN One (1) submarine

(Name and Type) ENEMY 10,000 ton AO, Identified as ITUKUSIMA MARU #282
Recognition silhouettes of Japanese Merchantmen.
TYPE OF ATTACK (Own [HANDWRITTEN: Enemy] - scratch one) Torpedoes submerged.

BRIEF DESCRIPTION Made approach on zigzagging target. Fired two torpedoes
from stern on 100° track. Both hit. AO took angle down by bow.
Screw clear. Fired two from bow. One hit. Target sank in 2 minutes.
WEAPONS EMPLOYED:
Own Torpedoes
Enemy Gun
AMMUNITION EXPENDED Four (4) torpedoes

EVASIVE TACTICS EMPLOYED:
Own None
Enemy None

— page 335 —
FOR TORPEDO ATTACK (Own):                                TYPE ATTACK
                                                          (check)
Firing range 1000 and 800 yards                           Periscope
Keel depth 66 feet                                        Periscope and TDC X
Straight/curved shot(s)                                   Sound
Type spread None                                          Sound and TDC

Attack: (unopposed X
(check) (opposed by air screen,close screen

Detected: (prior to firing
(check) (after firing
(undetected X

RESULTS: (Certain) Three torpedo hits, under forecastle, bridge
and amidships. Ship sank in 2 minutes after last hit.

(Estimated)

DAMAGE TO OWN SHIP None

BRIEF REMARKS

— page 336 —
CONFIDENTIAL

U. S. SUBMARINE ACTION REPORT

U.S.S. GROWLER (SS215) Date: September 7 1942
Time 1551 (-8) Location: Latitude 25 - 31 N
Longitude 121 - 38 E

INSTRUCTIONS
(a) ATTACK FIRST - THEN COLLECT DATA FOR THIS REPORT.
(b) DO NOT "GUN DECK" THIS REPORT - IF DATA CANNOT BE ESTIMATED WITH REASONABLE ACCURACY
ENTER A DASH IN SPACE FOR WHICH NO DATA IS AVAILABLE.
(c) DRAW A CIRCLE AROUND THE APPROPRIATE ENTRY IN THIS REPORT WHEREVER SUITABLE.

WEATHER CONDITIONS Clear, unlimited visibility
SEA CONDITIONS Calm
SOUND CONDITIONS (if applicable) poor
TYPE OF OPERATIONS Offensive Patrol off TAIWAN.

SPECIFIC OBJECTIVE Freighter

FORCES ENGAGED: OWN One (1) Submarine

(Name and Type) ENEMY One (1) 4500 ton freighter. Identified as similar
MORIOKA MARU #99. Recognition Silhouette of Japanese Merchantmen.
TYPE OF ATTACK (Own [crossed out: Enemy] [HANDWRITTEN: Enemy] - scratch one) Torpedoes submerged

BRIEF DESCRIPTION Approached non-zigging target. Fired at 700 Yds.
One hit. Target broken in two and sank.

WEAPONS EMPLOYED:
Own Torpedoes
Enemy None

AMMUNITION EXPENDED Two (2) torpedoes

EVASIVE TACTICS EMPLOYED:
Own None
Enemy None

— page 337 —
FOR TORPEDO ATTACK (Own):
Firing range [HANDWRITTEN: 700 yards]
Keel depth [HANDWRITTEN: 65 feet]
Straight/[HANDWRITTEN: (line through 'Straight')]curved/[HANDWRITTEN: (line through 'shot(s)')] shot(s)
Type spread [HANDWRITTEN: none]

Attack: (unopposed [HANDWRITTEN: X]
(check) (opposed by air screen, close screen

Detected: (prior to firing
(check) (after firing
(undetected [HANDWRITTEN: X]

RESULTS: (Certain) [HANDWRITTEN: Freighter broke in two and sank in two minutes]

(Estimated)

DAMAGE TO OWN SHIP [HANDWRITTEN: None.]

BRIEF REMARKS

TYPE ATTACK
(check)
Periscope
Periscope and TDC [HANDWRITTEN: X]
Sound
Sound and TDC

— page 338 —
CONFIDENTIAL

U. S. SUBMARINE ACTION REPORT

U.S.S. GROWLER (SS215) Date: September 13, 1942
Time 1404(S) Location: Latitude 25-31N
Longitude 121-35E

INSTRUCTIONS
(a) ATTACK FIRST - THEN COLLECT DATA FOR THIS REPORT.
(b) DO NOT "GUN DECK" THIS REPORT - IF DATA CANNOT BE ESTIMATED WITH REASONABLE ACCURACY
ENTER A DASH IN SPACE FOR WHICH NO DATA IS AVAILABLE.
(c) DRAW A CIRCLE AROUND THE APPROPRIATE ENTRY IN THIS REPORT WHEREVER SUITABLE.

WEATHER CONDITIONS Clear, good visibility, slightly overcast.

SEA CONDITIONS Moderate, with moderate swell, strong currents.

JUND CONDITIONS (if applicable) Extremely poor

TYPE OF OPERATIONS Offensive Patrol off TAIWAN.

SPECIFIC OBJECTIVE Freighter in convoy.

FORCES ENGAGED: OWN One (1) submarine

(Name and Type) ENEMY One (1) 7000 freighter; 2 patrol boats (sampans)

TYPE OF ATTACK (Own/[STRUCK THROUGH: Enemy] - scratch one) Submerged torpedo

BRIEF DESCRIPTION Approached scattered convoy, selecting largest ship.
Obtained position ahead, ran out to 1000 yards then closed. Fired on 90°
to 100° track. Missed.
WEAPONS EMPLOYED:
Own Torpedoes
Enemy Gun

AMMUNITION EXPENDED Four(4) torpedoes

EVASIVE TACTICS EMPLOYED:
Own Running silent at periscope depth evading patrol boats.
Enemy None

CSPF-4-7-42-1000 ENCLOSURE D

— page 339 —
FOR TORPEDO ATTACK (Own):

Firing range [HANDWRITTEN: 900 yards]
Keel depth [HANDWRITTEN: 66 feet]
Straight [HANDWRITTEN: 6] [STRIKETHROUGH: salvo] shot(s)
Type spread [HANDWRITTEN: 2° divergent]

Attack: (unopposed
(check) (opposed by air screen/close screen

Detected: (prior to firing
[HANDWRITTEN: ✓] (check) (after firing
(undetected X

RESULTS: (Certain) [HANDWRITTEN: Missed]

— page 340 —
[STAMP: OFFICE OF THE
RECEIVED
OCT 1 1942
COMMANDER SUBMARINES
PACIFIC FLEET]

[STAMP: DECLASSIFIED]

SS215/L11-1

U. S. S. GROWLER (215)

c/o Fleet Post Office,
San Francisco, California.
September 30, 1942.

From: The Commanding Officer.
To : The Commander Submarine Force, PACIFIC FLEET.

Via : The Commander Submarine Division EIGHTY ONE.
The Commander Submarine Squadron EIGHT.

Subject: Grounding of Vessel.

Reference: (a) USNR Art. 840.

1. On 23 September, at 1755 while approaching the USS
FULTON to go alongside upon return from war patrol, this vessel
grounded lightly aft.

2. The circumstances were as follows: It was at dusk.
No navigational lights were burning. The only chart available
was a blueprint which did not show complete soundings. Shoal
water was known to exist, marked by a small flag. This flag buoy
was not sighted.

3. The GROWLER rounded the stern of the FULTON at a
distance approximately 150 yards. Because of the confined waters
the turn could not be completed. Ship was backed down about
200 yards and was going ahead on both engines with slow sternway
when the stern grounded. Both screws were stopped, the anchor
let go and engines secured. The man in the chains had just ob-
tained a sounding of 5½ fathoms. He was sent aft and took sound-
ings, obtaining 5 fathoms amidships, 2 fathoms over the stern.

4. The ship was trimmed down by the bow, by flooding
forward trim tank, 1 and 2 main ballast tanks, and blowing after
trim tank and #5 main ballast tank dry. Fuel tanks #6 and 7,
containing water, were partially blown. The ship was floated off
at 1840 with the assistance of a tug.

5. Proceeded alongside the FULTON using speeds up to
full on 2 main engines with no undue vibration.

6. Visual examination by divers revealed starboard propell-
er blades to be twisted, port propeller blade tips bent. No
other damage was found.

[SIGNATURE: H.W. Gilmore]
H.W. GILMORE.

[HANDWRITTEN: Comd SubPac
BOX # 3132
RS #2731 FILE 110-7-34 JACKET]

— page 341 —
[HANDWRITTEN: Original]

DECLASSIFIED
CONFIDENTIAL
U. S. SUBMARINE ACTION REPORT

U.S.S. GROWLER Date: 16 January 1943
Time 1006 (K) Location: Latitude 3-52 South
Longitude 152-07 East

INSTRUCTIONS
(a) ATTACK FIRST - THEN COLLECT DATA FOR THIS REPORT.
(b) DO NOT "GUN DECK" THIS REPORT - IF DATA CANNOT BE ESTIMATED WITH REASONABLE ACCURACY
ENTER A DASH IN SPACE FOR WHICH NO DATA IS AVAILABLE.
(c) DRAW A CIRCLE AROUND THE APPROPRIATE ENTRY IN THIS REPORT WHEREVER SUITABLE.

WEATHER CONDITIONS Clear - visibility 20,000 yards
SEA CONDITIONS Smooth with slight whitecaps
SOUND CONDITIONS (if applicable) GOOD
TYPE OF OPERATIONS S/M War Patrol

SPECIFIC OBJECTIVE Enemy Shipping

FORCES ENGAGED: OWN Vessel - Enemy convoy, 8 Marus escorted by 1 DD and
2 Patrol Boats - Several Planes.
(Name and Type) ENEMY Ship attacked similar to BISBANE MARU, 5,425 tons.

TYPE OF ATTACK (Own Enemy - scratch one) Periscope, Day approach

BRIEF DESCRIPTION Sighted convoy 16,000 yards, closed to 800 yards, fired
at leading vessel - forced down immediately by depth charge attack.
Two hits on target, later observed sinking stern first.
WEAPONS EMPLOYED:
Own Torpedoes - Two
Enemy Depth charges - Plane bombs.

AMMUNITION EXPENDED -

EVASIVE TACTICS EMPLOYED:
Own Deep submergence
Enemy Convoy scattered - patrol remained close to us - keeping
us down.

— page 342 —
FOR TORPEDO ATTACK (Own):
Firing range [HANDWRITTEN: 800 yards]
Keel depth [HANDWRITTEN: 64']
Straight/[HANDWRITTEN: Curved-shot(s)]
Type spread [HANDWRITTEN: 3° Divergent]

TYPE ATTACK
(check)
[HANDWRITTEN: x] Periscope
Periscope and TDC
Sound
Sound and TDC

Attack: (unopposed)
(check) [HANDWRITTEN: (opposed-by-air screen/close screen X)]
Detected: (prior to firing
(check) [HANDWRITTEN: (after firing x)]
(undetected

RESULTS: (Certain) [HANDWRITTEN: 1 vessel BISBANE MARU type 5425 tons - SUNK]

(Estimated)

DAMAGE TO OWN SHIP

BRIEF REMARKS [HANDWRITTEN: Attempted to attain firing position on side of convoy away]
[HANDWRITTEN: from patrols. Just prior to firing convoy zigged across stern. Fired at]
[HANDWRITTEN: leading ship - 2 stern tubes - Both hits. Unable to obtain firing]
[HANDWRITTEN: position on any other ships.]

— page 343 —
CONFIDENTIAL

U. S. SUBMARINE ACTION REPORT

Date: 30 January 1943
U.S.S. GROWLER
Time 1851 (K) Location: Latitude 1-14 South
Longitude 148-55 East

INSTRUCTIONS
(a) ATTACK FIRST - THEN COLLECT DATA FOR THIS REPORT.
(b) DO NOT "GUN DECK" THIS REPORT - IF DATA CANNOT BE ESTIMATED WITH REASONABLE ACCURACY
ENTER A DASH IN SPACE FOR WHICH NO DATA IS AVAILABLE.
(c) DRAW A CIRCLE AROUND THE APPROPRIATE ENTRY IN THIS REPORT WHEREVER SUITABLE.

WEATHER CONDITIONS Overcast - Twilight
SEA CONDITIONS Smooth
SOUND CONDITIONS (if applicable) Good
TYPE OF OPERATIONS War Patrol

SPECIFIC OBJECTIVE Enemy Shipping

FORCES ENGAGED: OWN Vessel

(Name and Type) ENEMY one 6500 ton freighter and one A/S escort.

TYPE OF ATTACK (Own ENEMY - scratch one) Periscope by torpedoes

BRIEF DESCRIPTION Sighted vessel while on surface at ten miles. Made
submerged attack firing four torpedoes. One hit target escaped
under cover of darkness.
WEAPONS EMPLOYED:
Own Torpedoes - 4
Enemy Depth charges - gunfire.
AMMUNITION EXPENDED
Own
Enemy
EVASIVE TACTICS EMPLOYED:
Own Deep submergence
Enemy Escaped in darkness

— page 344 —
FOR TORPEDO ATTACK (Own):
    Firing range 2000 yards
    Keel depth 62'
    Straight/curved shots(x)
    Type spread 1° Divergent

    Attack: (unopposed x
    (check) (opposed by air screen, close screen

    Detected: (prior to firing
    (check) (after firing x
    (undetected

RESULTS: (Certain) One hit, vessel damaged. KOGYO MARU 6500 tons.

(Estimated)

DAMAGE TO OWN SHIP None

BRIEF REMARKS Patrol vessel not sighted due to darkness. Surfaced after
40 minutes and searched area at high speed. Target could not be
relocated.

TYPE ATTACK
(check)
Periscope
X Periscope and TDC
Sound
Sound and TDC

— page 345 —
CONFIDENTIAL
U. S. SUBMARINE ACTION REPORT
U.S.S. GROWLER Date: 31 January 1943
Time 1658 (K) Location: Latitude 1-20 South
Longitude 145-35 East

INSTRUCTIONS
(a) ATTACK FIRST - THEN COLLECT DATA FOR THIS REPORT.
(b) DO NOT "GUN DECK" THIS REPORT - IF DATA CANNOT BE ESTIMATED WITH REASONABLE ACCURACY
ENTER A DASH IN SPACE FOR WHICH NO DATA IS AVAILABLE.
(c) DRAW A CIRCLE AROUND THE APPROPRIATE ENTRY IN THIS REPORT WHEREVER SUITABLE.

WEATHER CONDITIONS Clear

SEA CONDITIONS Smooth

SOUND CONDITIONS (if applicable) Poor

TYPE OF OPERATIONS War Patrol

SPECIFIC OBJECTIVE Enemy Shipping

FORCES ENGAGED: OWN Vessel - Enemy 2500 ton patrol or gun boat.

(Name and Type) ENEMY

TYPE OF ATTACK (Own/~~Enemy~~ - scratch one) Periscope day approach - by torpedoes.

BRIEF DESCRIPTION Sighted vessel while on surface at 10 miles. Submerged
to attack. Fired 1 torpedo which went under target vessel and did not
explode.
WEAPONS EMPLOYED:
Own One torpedo
Enemy Depth Charges
AMMUNITION EXPENDED

EVASIVE TACTICS EMPLOYED:
Own Deep submergence.
Enemy

— page 346 —
FOR TORPEDO ATTACK (Own):
    Firing range [HANDWRITTEN: 800 yards]
    Keel depth [HANDWRITTEN: 64']
    Straight/curved shot(s)
    Type spread [HANDWRITTEN: NONE]

TYPE ATTACK
    (check)
    Periscope
    [HANDWRITTEN: X] Periscope and TDC
    Sound
    Sound and TDC

Attack: (unopposed [HANDWRITTEN: x]
    (check) (opposed by air screen, close screen
Detected: (prior to firing
    (check) (after firing [HANDWRITTEN: x]
    (undetected

RESULTS: (Certain) [HANDWRITTEN: No damage inflicted]

(Estimated)

DAMAGE TO OWN SHIP [HANDWRITTEN: None]

BRIEF REMARKS

— page 347 —
CONFIDENTIAL
U. S. SUBMARINE ACTION REPORT
U.S.S. GROWLER Date: 7 February 1943
Time 0135 (K) Location: Latitude 3-34 South
Longitude 151-09 East

INSTRUCTIONS
(a) ATTACK FIRST - THEN COLLECT DATA FOR THIS REPORT.
(b) DO NOT "GUN DECK" THIS REPORT - IF DATA CANNOT BE ESTIMATED WITH REASONABLE ACCURACY
ENTER A DASH IN SPACE FOR WHICH NO DATA IS AVAILABLE.
(c) DRAW A CIRCLE AROUND THE APPROPRIATE ENTRY IN THIS REPORT WHEREVER SUITABLE.

WEATHER CONDITIONS [HANDWRITTEN: Dark, cloudy, poor visibility]
SEA CONDITIONS [HANDWRITTEN: Slight chop]
SOUND CONDITIONS (if applicable) [HANDWRITTEN: -]
TYPE OF OPERATIONS [HANDWRITTEN: War Patrol]

SPECIFIC OBJECTIVE [HANDWRITTEN: Enemy Shipping]

FORCES ENGAGED: OWN [HANDWRITTEN: Vessel]

(Name and Type) ENEMY [HANDWRITTEN: one 2500 ton converted patrol or gun boat.]

TYPE OF ATTACK (Own Enemy - [CROSSED OUT: scratch one]) [HANDWRITTEN: Night approach - surface]

BRIEF DESCRIPTION [HANDWRITTEN: Sighted by enemy while maneuvering for firing position.
Enemy attempted to ram. Rammed enemy vessel midway between bow and
bridge.]
WEAPONS EMPLOYED:
Own [HANDWRITTEN: None]
Enemy [HANDWRITTEN: Machine guns and depth charges]
AMMUNITION EXPENDED [HANDWRITTEN: None]

EVASIVE TACTICS EMPLOYED:
Own [HANDWRITTEN: Submerged]
Enemy [HANDWRITTEN: -]

— page 348 —
FOR TORPEDO ATTACK (Own):
    Firing range
    Keel depth
    Straight/curved shot(s)
    Type spread

TYPE ATTACK
(check)
    Periscope
    Periscope and TDC
    Sound
    Sound and TDC

Attack: (unopposed
    (check) (opposed by air screen, close screen
Detected: (prior to firing
    (check) (after firing
    (undetected

RESULTS: (Certain) [HANDWRITTEN: Enemy's bow ripped open]

(Estimated) [HANDWRITTEN: Probably Sunk]

DAMAGE TO OWN SHIP [HANDWRITTEN: Bow and Forward tubes wrecked, one bullet hole W.T]
[HANDWRITTEN: conning tower. Many bullet holes bridge superstructure. All]
[HANDWRITTEN: auxiliary circuits flooded and grounded]

BRIEF REMARKS [HANDWRITTEN: C.O., assistant O.O.D., one lookout killed in action. Two]
[HANDWRITTEN: lookouts seriously wounded. Damage to own ship necessitated]
[HANDWRITTEN: discontinuing war patrol]

— page 349 —
[HANDWRITTEN: From Box # 74 (1-39 Series) C-60]
[HANDWRITTEN: [NORPAC (US SUB ACTION "B")]
[STAMP: 26 AUG 1958]
ed

Serial 054
[STAMP: DECLASSIFIED]
[STAMP: CONFIDENTIAL]

25 MAY 1943

From: Commander Submarine Squadron EIGHT.
To: The Chief of the Bureau of Ships.

Subject: U.S.S. GROWLER (SS215); Repair of Battle Damage.

Enclosure: (A) Photographs of Damage and Repairs to U.S.S.
GROWLER, pages 1 to 14, inclusive.

1. On February 17, 1943, GROWLER arrived alongside
the tender after having rammed an enemy patrol vessel on
February 7, 1943.

2. As a result of the ramming and of enemy machine
gun fire, GROWLER had sustained material damage as follows:

(a) The bow section forward of frame 4 was twisted about
90° to port. Encl. (A), pages 1 to 4, inclusive.

(b) The bow section forward of frame 10 was twisted and
distorted out of shape. Encl. (A), pages 1 to 4,
inclusive.

(c) The deck plating to frame 12 was wrinkled and torn.
Encl. (A), page 1.

(d) Grease lines, bow buoyancy vents and operating gear,
shutters and shutter operating gear in the bow
sections were damaged.

(e) No. 3 torpedo tube shutter had jammed into the outer
door gasket groove.

(f) No. 10 bulkhead was dished in about 3/4" at the center-
line between the chain lookers in way of the torpedo
tubes.

(g) No. 10 bulkhead was badly distorted above the tubes.

(h) Grease lines on bridge were shot away.

(i) The conning tower upper hatch was punctured by a
.50 caliber bullet and the upper hatch operating
wheel was damaged. Encl. (A), page 5.

- 1 -

— page 350 —
ed

FC5-8/S11/L11
Serial 054
CONFIDENTIAL
Subject: U.S.S. GROWLER (SS215); Repair of Battle Damage.

(j) The No. 1 periscope shears between the bridge deck
and covered part of bridge was punctured but the
periscope suffered no damage. Encl. (A), page 6.

(k) The following electric cables on the bridge were
shot away:
(1) Collision alarm.
(2) 1 MC circuit.
(3) Sidelight cables.
(4) Target Bearing Transmitter cables.
(5) Bridge steering repeater circuits.

(l) Upon diving immediately following the action, water
entered the conning tower, control room, and pump
room and caused minor damage to the following motors
and equipment:
(1) SJ range indicator units.
(2) H.P. air compressor motors.
(3) L.P. air compressor motors.
(4) Turbo-blower motors.
(5) Trim and drain pump motors.
(6) Periscope hoist motors.
(7) Antenna hoist motor.
(8) I.C. motor generators.
(9) I.C. switchboard.
(10) 1 MC system.
(11) Dead reckoning analyzer indicator.
(12) Gyro compass and its auxiliaries.
(13) All electrical panels in conning tower and
control room.

(m) One pair 7 x 50 binoculars were lost.

3. It was considered feasible to repair GROWLER
with local facilities provided that the forward torpedo tubes
were not damaged too severely. Accordingly, a despatch was
sent to the Supervisor of Shipbuilding at the Electric Boat
Company, for a complete set of prints covering the construct-
ion of the bow section.

4. On February 21, GROWLER was shifted under a crane
at Musgrave's Wharf, Brisbane, and the Evans Deakin Company
commenced cutting away the bow section above the torpedo tube
flat forward of frame 10. During this operation, and at the
[STAMP: 25 MAY 1943]
- 2 -

— page 351 —
ed .
25 MAY 1945

FC5-8/S11/L11

Serial 054
CONFIDENTIAL
Subject: U.S.S. GROWLER (SS215); Repair of Battle Damage.

subsequent docking, particular care was taken to save all
shutters, operating gear, and other fittings, for repair
and reinstallation. All gear of whatever description was
removed intact to the Rock Lea plant of the Evans Deakin
Company where it was proposed to prefabricate a new bow.

5. On February 23, GROWLER was docked. The
remainder of the bow, forward of frame 10, was then cleared
away. (Encl (A), page 8.)

6. Each torpedo tube was checked by running wires
along the outboard, inboard, and top lands of all tubes both
forward and aft. The correlation of readings between the
forward and after tubes was good. Tube diameters were
measured at intervals of two feet with inside micrometers.
The tubes were boresighted. Then both a dummy and an
exercise torpedo were passed through each tube. In some
cases there was resistance to the passage but the restriction
was eliminated by adjustment of tube rollers. In general the
tubes appeared to be in good condition and such repairs as
necessary were considered within the capacity of local fac-
ilities.

7. GROWLER was undocked on February 28.

8. On March 1, a conference between the Squadron
Commander and representatives of the Evans Deakin Company
was held at Rock Lea. At this conference the Evans Deakin
Company undertook to rebuild GROWLER'S bow. The Company
estimated that three months would be required to prefabricate the
bow and that an additional period of about four weeks with
the ship in dock would be required to line up the bow and
attach it to the ship. The tentative completion date was
then set for April 28.

9. The company started work immediately by using
the old section for scantlings and the table offsets for the
lines. The butt nose castings, all shutters, operating gear,
and greasing equipment, were salvaged and repaired. On March
23 the first set of prints arrived from Electric Boat Company
and on March 27 a second set of prints arrived. By this time
most of the bow section had been assembled. It had been
decided previously to do the job by putting the bow on in two
pieces, that is, a lower and an upper section. Changes were

- 3 -

— page 352 —
ed

FC5-S/S11/L11
Serial 054
[STAMP: CONFIDENTIAL]
Subject: U.S.S. GROWLER (SS215); Repair of Battle Damage.

— page 356 —
There is no text to transcribe in the provided image. The image is a photograph of a submarine, not a document page containing text.

— page 357 —
U. S. S. FULTON

No. [HANDWRITTEN: AS11-41-7] DATE [HANDWRITTEN: 2/12/43]
MADE FOR [HANDWRITTEN: CSS-8]
SUBJECT [HANDWRITTEN: Damage to Growler]
MADE BY [HANDWRITTEN: ]

[WATERMARK: CONFIDENTIAL]

— page 359 —
U. S. S. FULTON

No. [HANDWRITTEN: AS11-419]
DATE [HANDWRITTEN: 2/17/43]
MADE FOR [HANDWRITTEN: CSS-4]
SUBJECT [HANDWRITTEN: Damage to Growler]
MADE BY

[STAMP: CONFIDENTIAL]

— page 364 —
USS BASS (SS-164) in drydock at Pearl Harbor, T.H.
                                                                [HANDWRITTEN: q]

— page 370 —
[HANDWRITTEN: Phibsub(6)]

[STAMP: DECLASSIFIED]
C-O-N-F-I-D-E-N-T-I-A-L

20 September 1944.

From: Commander Task Group 17.17.
To : Commander-in-Chief, U. S. Fleet.
Via : (1) Commander Task Force 17.
(2) Commander-in-Chief, Pacific Fleet.

Subject: Patrol Report of Task Group 17.17.

Reference: (a) Task Force Seventeen Operation Order 272-44.
(b) Task Group 17.17 Supplementary Patrol
Instructions.
(c) Report of U.S.S. GROWLER TENTH WAR PATROL.
(d) Report of U.S.S. SEALION SECOND WAR PATROL.
(e) Report of U.S.S. PAMPANITO THIRD WAR PATROL.

Enclosure: (A) Revised Communication Plan. (To ComSubsPac only).
(B) Grid of Rotating Area showing Patrol Stations.
(To ComSubsPac only).

1. In as much as the destinations of the submarines
upon completion of patrol vary, no attempt at a complete report
will be made. Some of the pertinent points will be covered mainly
from the standpoint of communications. Enclosures (A) and (B)
are forwarded herewith.

2. During the two day period which was required to
effect renewal of GROWLER'S fathometer head, many discussions were
held. Enclosures (D) to (G) of the Task Group Commander's
Supplementary Patrol Instructions were promulgated. All three of
the important areas of the Rotating Patrol were blocked out in
squares 20 miles on a side. The squares in each area were given
horizontal and vertical coordinates in grid form - See Enclosure
(B).

3. This group, known as "Bons Busters", departed Midway
17 August 1944 and operated in accordance with references (A) and
(B). Communication drills were held and some changes to the plan
were made. Only the 2,000 Kc band will be used for communication
within this Group. The VHF was found to be effective to 7,500
yards maximum. Recognition by radar interference keying is supple-
mented by individual ship identification within this Group. Com-
munication by radar may be resorted to during coordinated attacks.
It is necessary for each unit to have four high frequency receivers
in order to guard HAIKU, CHINA, AREA FREQUENCY and the Group
frequency.

4. Speed of advance was increased to 12 knots as sea
was light and two-engine speed would put us in our individual
areas on the twenty-ninth in accordance with serial 37. Interval
was changed to 10 miles to facilitate communication. Changed
PAMPANITO 29 August position to FOX TWO.

- 1 -

— page 372 —
C-O-N-F-I-D-E-N-T-I-A-L Task Group 17.17 Patrol Report.

2150 SEALION reported results of attacks: 1 AP - Sunk;
1 DD, "UN-1" - Sunk; 1 AO - damaged and possibly sunk.
19 torpedoes fired. SEALION should have sent a
contact report.

7. ComSubPac gave SEALION permission to get more torpedoes
at SAIPAN and rejoin us. After many attempts sent a
rendezvous message to PAMPANITO "blind".

8. 2 September 1944.

After many attempts sent two GROWLER daily patrol
stations to PAMPANITO "blind".

2325 Sent above message to PAMPANITO by SJ radar.

9. 3 September 1944.

Experienced usual static and jamming on the
2,000 Kc band - could not raise PAMPANITO.

10. 9 September 1944.

Attempted to contact PAMPANITO for two hours on
various frequencies.

11. 10 September 1944.

0212 Requested ComSubPac to have PAMPANITO rendezvous
with GROWLER. SEALION also got rendezvous from
ComSubPac.

12. 11 September 1944.

SEALION and PAMPANITO rendezvous.

1955 GROWLER and SEALION made rendezvous. Orally instruc-
ted him as follows: "Use 2006 Kcs until zero hours
zebra 14th. If jammed, shift to 2880 Kcs. Use
channel 144 for contact reports. Course 213(T),
speed 13 knots until 0200; then reverse. SEALION
open out 8 miles to the west, PAMPANITO 8 miles to
the east of GROWLER. Spend the 12th as follows:
GROWLER-George 23, SEALION-How 23, PAMPANITO - Fox
23. Rendezvous 1400 Zebra 13th at 20-30 N, 117-40 W.
Whoever makes contact send contact report and attack!
Good luck." He has 24 torpedoes.

- 3 -

— page 373 —
8
C-O-N-F-I-D-E-N-T-I-A-L Task Group 17.17 Patrol Report.
2135 Exchanged radar recognition with PAMPANITO.
2200 At rendezvous 18-38 N, 115-20 E on course 213(T) at
       13 knots. Orally instructed the PAMPANITO as above.
       He has 24 torpedoes.
2248 Scouting line formed.
13. 12 September 1944.
0107 GROWLER made contact with convoy consisting of:
       9 ships, 5 escorts. If other boats are in position
       they should make contact very soon. GROWLER should
       have sent contact report immediately.
       PAMPANITO made contact.
0153 After tracking convoy sent contact report.
       PAMPANITO only receipted. PAMPANITO sent his
       contact report on same convoy. Believe SEALION
       should have made contact as we were on convoys
       starboard bow and SEALION was on our starboard
       beam, heading toward them.
0155 GROWLER attacked; Results: 1 DD, "UN-1" Sunk;
       2 large AK's - damaged.
0215 Sent out report that GROWLER sank a DD in order to
       encourage the other two boats. SEALION only
       receipted. GROWLER erred in not mentioning that she
       had drawn 2 escorts away from the convoy and had
       damaged 2 AK's.
0218 GROWLER chased for over ½ hour by 2 PC's. This,
       together with sinking of DD should leave the
       convoys starboard flank exposed to PAMPANITO and
       SEALION.
0219 Retransmitted the 0153 contact report in wolf
       pack code. Both SEALION and PAMPANITO receipted.
0253 GROWLER saw 3 bright flashes of explosions to
       westward. Much tracer fire followed. PAMPANITO
       attacking? Making end around.
0410 Friendly interference noted on GROWLER SJ -
       SEALION?

- 4 -

— page 376 —
SUBMARINE FORCE, PACIFIC FLEET hch
FF12-10/A16-3(15)
Care of Fleet Post Office,
Serial 02457
San Francisco, California,
6 November 1944.
CONFIDENTIAL [HANDWRITTEN: B]

FIRST ENDORSEMENT to
Patrol Report of Thirteenth
Coordinated Attack Group.

NOTE: THIS REPORT WILL BE
DESTROYED PRIOR TO
ENTERING PATROL AREA.

From: The Commander Submarine Force, Pacific Fleet.
To : The Commander-in-Chief, United States Fleet.
Via : The Commander-in-Chief, U.S. Pacific Fleet.

Subject: Report of Thirteenth Coordinated Attack Group Consist-
ing of the U.S.S. SEALION (SS315), the U.S.S. PAMPANITO
(SS383) and the U.S.S. GROWLER (SS215).

1. The thirteenth coordinated attack group consisted of
the U.S.S. SEALION, the U.S.S. PAMPANITO, and the U.S.S. GROWLER, with
Commander T. B. Oakley, Jr., U.S. Navy, as group commander and com-
manding officer of the GROWLER. The patrol was conducted in areas be-
tween Luzon and Formosa. Further details are contained in the
GROWLER's tenth, the SEALION's second, and the PAMPANITO's third war
patrol reports.

2. This splendid patrol included the memorable attacks on
convoys on 31 August and 12 September, and the rescue of British and
Australian prisoners of war who were being transported from Singapore
to the Empire when the Japanese transport in which they were embarked
was sunk. The performances of all three of these submarines during
this group patrol are among the outstanding performances of the sub-
marine warfare to date.

3. The Commander Submarine Force, Pacific Fleet, congratu-
lates the group commander, the commanding officers, officers, and
crews of the GROWLER, SEALION, and PAMPANITO for this outstanding
patrol. The following damage was inflicted upon the enemy by this
group:

S U N K
1 - Large AP (PRESIDENT HARRISON) (EC) - 10,500 tons (PAMPANITO Attack
No. 1)
1 - Large AK (BORDEAUX MARU Type) (EU) - 6,600 tons (PAMPANITO Attack
No. 1)
1 - Large AK (WALES MARU Type) (EU) - 6,500 tons (PAMPANITO Attack
No. 1)
1 - Large AO (NIPPON MARU Type) (EU) - 10,000 tons (SEALION Attack
No. 2)
1 - DD (UN-1 Class) (EC) - 2,300 tons (SEALION Attack
No. 3)
1 - Large AP (RAKUYO MARU Type) (EU) - 10,000 tons (SEALION Attack
No. 2)
1 - Large AP (RAKUYO Type) (EC) - 9,400 tons (SEALION Attack
No. 2)

- 1 -
[STAMP: No EXTRA • ORIGINAL]
[STAMP: No SURG. MICRO.]
[STAMP: PHOTO-LAB. OP-16]
[STAMP: RETURN TO F-4253]

— page 378 —
SUBMARINE FORCE, PACIFIC FLEET hch
FF12-10/A16-3(15) Care of Fleet Post Office,
San Francisco, California,
Serial 02457 6 November 1944.

CONFIDENTIAL

FIRST ENDORSEMENT to NOTE: THIS REPORT WILL BE
Patrol Report of Thirteenth DESTROYED PRIOR TO
Coordinated Attack Group. ENTERING PATROL AREA.

Subject: Report of Thirteenth Coordinated Attack Group Consist-
ing of the U.S.S. SEALION (SS315), the U.S.S. PAMPANITO
(SS383) and the U.S.S. GROWLER (SS215).

DISTRIBUTION:
(Complete Reports)
Cominch (7)
CNO (5)
Cincpac (6)
Intel.Gen.Pac.Ocean Areas (1)
Comservpac (1)
Cinclant (1)
Comsubslant (8)
S/M School, NL (2)
CO, S/M Base, PH (1)
ComSoPac (2)
Comsowespac (1)
Comsubsowespac (2)
CTF 72 (2)
Comnorpac (1)
Comsubspac (40)
SUBAD, MI (2)
ComsubspacSubordcom (3)
All squadron and Division
Commanders, Pacific (2)
Substrainpac (3)
All Submarines, Pacific (1)
ComFleetAirWing TWO (1)
O-in-C,ASWTU,FltAirWingTWO (1)
[SIGNATURE: E. L. Hynes 2nd]
E. L. HYNES, 2nd,
Flag Secretary.

— page 379 —
[STAMP: DECLASSIFIED]
"FOR OFFICIAL USE ONLY"

FE24-71/A17-25 UNITED STATES NAVY 05-pt
Serial: 00050
[STAMP: DECLASSIFIED]
TOP SECRET 23 December 1944

From: Commander Submarines, Seventh Fleet.
To : Commander Seventh Fleet.

Subject: Record of Proceedings of an Investigation
conducted on board the U.S.S. ANTHEDON (AS24)
by order of Commander Submarines Seventh Fleet
to inquire into the circumstances connected
with the possible loss of the U.S.S. GROWLER
(SS215) on her eleventh war patrol, dated
December 12, 1944.

Enclosure: (A) Original and two copies of subject
investigation with Commander Submarines
Seventh Fleet TOP SECRET letter FE24-71/
A17-25 serial 00049 dated 23 December 1944.

1. Enclosure (A) is forwarded herewith.

[SIGNATURE: P.G. Nichols]
P.G. NICHOLS,
Chief of Staff.

"FOR OFFICIAL USE ONLY"

[STAMP: DECLASSIFIED]

— page 380 —
RECORD OF PROCEEDINGS
OF AN
INVESTIGATION
CONDUCTED ON BOARD THE
U.S.S. ANTHEDON (AS24)
BY ORDER OF
COMMANDER SUBMARINES SEVENTH FLEET
To inquire into the circumstances connected with the
possible loss of the U.S.S. GROWLER (SS215)
on her eleventh war patrol.

December 12, 1944

[STAMP: TOP SECRET]

— page 381 —
After full and mature deliberation, the investigating officer finds as
follows:

FINDING OF FACTS

Facts deemed established:

1. That the GROWLER, HAKE and HARDHEAD were operating together as a
coordinated search and attack group under command of Commander T.B. Oakley,
junior, Commanding Officer, GROWLER, in the proximity of latitude 13° 21'
North, 119° 32' East in the early hours of 8 November, 1944.

2. That at about 0140 (H) 8 November, 1944 the GROWLER made radar contact
on enemy target group bearing 097° true, range 25,000 yards.

3. That the GROWLER relayed information of this contact to HARDHEAD and
directed coordination of attack between these two vessels on this particular
target group indicating that GROWLER was tracking from port bow and ordering
HARDHEAD to attack from starboard bow.

4. That at about 0142 (H) 8 November, 1944 HARDHEAD made radar and sight
contact with this same target group bearing 095° true, range 16,000 yards.

5. That at about 0142 (H) 8 November, 1944 HARDHEAD had radar contact
with GROWLER bearing 280° true, range 7,000 yards.

6. That at about 0252 (H) 8 November, 1944 HAKE heard two distant
explosions the exact type and direction of which were not determined.

7. That at about 0253 (H) 8 November, 1944 HARDHEAD heard an explosion
which had the characteristics of a torpedo explosion.

8. That at about 0254 (H) 8 November, 1944 the target group changed
course to the right to 030° true.

9. That at about 0257 (H) 8 November, 1944 the HARDHEAD heard three
distant depth charge explosions.

10. That at about 0316 (H) 8 November, 1944 the HAKE made radar contact
on a U.S. submarine at a range of 10,000 yards.

11. That at about 0400 (H) 8 November, 1944 the HARDHEAD attacked the
target from its port bow with four torpedoes, obtaining three or four hits,
and HAKE saw tanker sink.

12. That this attack was followed by a depth charge counter-attack which
continued until 1725 (H) 8 November, 1944.

13. That the HARDHEAD surfaced at 1727 (H) 8 November, 1944 approximately
twenty miles from the scene of the torpedo attack.

14. That the HAKE had been subjected to the depth charge counter-attack
without sustaining any damage.

15. That at about 0430 (H) 9 November, 1944 HARDHEAD attempted, without
success, to call GROWLER by radio to request instructions.

16. That at about 0900 (H) 9 November, 1944 HAKE transmitted a message
to GROWLER for which GROWLER did not answer call or send receipt.

[STAMP: TOP SECRET]

— page 382 —
17. That at 071530 (2330 (H) 7 November, 1944) GROWLER originated a
message reporting temporary repairs to SJ radar and stating urgent need for
spare parts for same.

18. That subsequently a rendezvous was arranged for GROWLER and BREAM to
transfer SJ radar spare parts.

19. That no communication with GROWLER regarding this rendezvous could
be established.

20. That the GROWLER failed to keep this rendezvous.

21. That further attempt to arrange a rendezvous between GROWLER and
REDFIN for same purpose was not successful because of failure to establish
communication with GROWLER.

22. That no communication has been received from the GROWLER since at
about 0232 (H) 8 November, 1944.

23. That no known contact with the GROWLER has been had since at about
0328 (H) 8 November, 1944.

24. That upon departure for its latest patrol the GROWLER was in very
good material condition, the officers and crew were well trained and
organized, and the submarine was in all respects ready to proceed on the
assigned war mission.

25. That the GROWLER had experienced difficulty with its SJ radar
equipment after arrival in the operating area.

26. That the GROWLER had effected satisfactory temporary repairs to the
SJ radar at time his 071530 message was released.

27. That GROWLER had made a radar contact at 0140 (H) 8 November, 1944
on a target group at a range of 25,000 yards.

28. That subsequent messages from the GROWLER indicated that radar contact
was maintained for approximately an hour at the minimum.

29. That the Commanding Officer, GROWLER, Commander T.B. Oakley, Junior,
was an experienced officer of proven ability with an outstanding record as
a wartime submarine captain.

RECOMMENDATION

No steps to improve operational procedures are recommended.

TOP SECRET

— page 383 —
SUBMARINES SEVENTH FLEET
F424-71/A17-2S
Serial 00046
U.S.S. Bonefish (SS223), Flagship.

DEC 10 1944

TOP SECRET

From: Commander Submarines, Seventh Fleet.
To : Captain Leon S. Huffman, U.S. Navy, Commander
 Submarine Squadron Twenty-Six.

Subject: Investigation into the loss of the U.S.S.
 GROWLER (SS215) on her eleventh war patrol.

1. Under authority of 5 U.S. Code 93, you are here-
by detailed to investigate, as soon as practicable, into the
circumstances connected with the loss of the U.S.S. GROWLER
(SS215) on her eleventh war patrol.

2. You will make a thorough investigation into all
the known circumstances connected with the loss and operation of
the U.S.S. GROWLER during her eleventh war patrol and submit a
complete report to the Commander Submarines, Seventh Fleet, of
the facts which you deem to be established, together with recom-
mendations as to what steps, if any, should be taken to improve
operational procedures.

3. Your attention is particularly invited to
Section 734, Naval Courts and Boards.

4. You will furnish your own clerical assistance.
You are directed to make only an original and three copies of
the record of the proceedings and forward the original and three
copies to the convening authority.

R. W. CHRISTIE,
Rear Admiral, U. S. Navy,
Commander Submarines, Seventh Fleet.

CERTIFIED TO BE A TRUE COPY:
[SIGNATURE: M. H. Huffman]
[HANDWRITTEN: Captain, U.S. Navy]

— page 384 —
U.S.S. ANTHEDON (AS24)
Care of Fleet Post Office,
San Francisco, California.
Tuesday, December 12, 1944.

FIRST DAY

The investigation convened at 8:30 a.m.

The investigating officer, Captain Leon J. Huffman, U.S. Navy,
administered the prescribed oath to Frederick Lawson, chief yeoman,
U.S. Naval Reserve, the reporter, who took seat as such.

The investigating officer read the order directing him to make the
investigation, which is hereto prefixed.

The investigating officer announced that the investigation would be
conducted with closed doors.

No witnesses not otherwise connected with the investigation were present.

A witness called by the investigating officer entered, was informed of
the subject matter of the investigation, and declared as follows:

Examined by the investigating officer:

1. Q. State your name, rank, and present station.
   A. C.C. Burlingame, Commander, U.S. Navy, Commander Submarine Division 182.

2. Q. What were your duties in connection with the latest refit of the
   USS GROWLER?
   A. I was assigned to the GROWLER as administrative Division Commander
   and Training Officer. In addition the Relief Crew under my command assisted
   the tender in refit of the GROWLER.

3. Q. Briefly describe your association with the GROWLER during the
   period of its refit and training exercises following refit, including
   reference to the personnel changes and general nature of training exercises.
   A. The GROWLER arrived Fremantle from her 10th patrol on 25th of
   September 1944. The crew returned aboard from their rest period on
   11th of October. At this time Lieutenants Messick and Lawrence were
   transferred to the Relief Crew and replaced by Lieutenant F.P. Thomas and
   Lieutenant (junior grade) G.W. Jewett. In addition 18 enlisted men from
   the GROWLER were replaced by a similar number from the Relief Crew.
   Lieutenant Thomas was assigned as assistant T.D.C. Operator and Commissary
   Officer. He had made four previous patrols in the USS DACE. Lieutenant
   (junior grade) Jewett was assigned as Communication Officer. He had made
   no previous patrols, coming straight from submarine school. Lieutenant
   Messick had made six previous patrols. Lieutenant Lawrence had made one
   patrol, the GROWLER's 10th. On the 12th and 13th of October GROWLER
   conducted the usual independent underway operations and was alongside on
   the 14th loading. On the 15th GROWLER acting as Group Commander of a co-
   ordinated attack group conducted convoy exercises off Fremantle. The group

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— page 385 —
comprised GROWLER, HARDHEAD and HAKE. In order to coordinate the exercise
I rode the target ship, HMAS MILDURA. On the 16th of October GROWLER had
independent operations and experimental torpedo firing. I witnessed this
from a plane. I boarded GROWLER on the morning of the 17th. Day and night
exercises were conducted that day and the morning of the 18th. Three
torpedoes were fired, after which GROWLER returned to port, loaded and
departed for patrol on 20th in company with USS GUNNEL. Except for the
experimental torpedo firing this was a normal training period for a
submarine. With an experienced Commanding Officer considerable emphasis
was placed on coordinated attacks during the training period since the
Commanding Officer had been ordered to act as Group Commander of a
coordinated group consisting of GROWLER, HARDHEAD and HAKE after arrival
in the area. In addition to the day and night convoy in the bombing
restriction zone on the 15th of October the group was exercised on the
game board at the Lookout School. The state of training of the GROWLER
was considerably above average in all respects. It was one of the smoothest
functioning fire control parties I have seen in a period of one year as
it fitted well into the organization; however, the only key enlisted man who was transferred was the chief motor machinist
mate whose battle station was the hydraulic manifold. He was replaced by
a chief motor machinist mate with previous experience.

4. Q. State the previous experience of the Commanding Officer and
include your estimate of his ability.
A. Commander T.B. Oakley served in the first and second patrols of the
CACHALOT, the first and second patrols of the TINOSA, the 10th patrol of
the TARPON and the 9th and 10th patrols of the GROWLER. The last three
patrols he was in command. He was an experienced submarine officer, having
made seven war patrols, prior to the GROWLER's 11th patrol. His two patrols
in the GROWLER were outstanding for aggressiveness, fearlessness and good
judgment. His general reputation was that he was one of our best commanding
officers. Incidentally, during the 10th patrol of the GROWLER Commander
Oakley served as Group Commander of the GROWLER, SEA LION and PAMPANITO,
operating under Commander Task Force 17. This group sank a total of 98,100
tons and damaged 19,000 tons for a total of 117,000 tons sunk and damaged.
Of that total GROWLER sank 22,800 tons including three fleet destroyers and
damaged two freighters totaling 15,000 tons, for a grand total of 37,800
tons.

5. Q. During the training period did you observe anything unusual about
the performance of GROWLER's radar equipment?
A. No. Both radars functioned normally.

6. Q. Did the Commanding Officer make any statement to you regarding the
refit just completed?
A. The Commanding Officer was very pleased with the refit in general
and so expressed himself to me stating his appreciation, especially for
the work of the Relief Commanding Officer, Lieutenant Commander Eubanks.
The evening before the regular crew returned to the ship I inspected the
GROWLER and found the state of cleanliness above average and the Relief
Commanding Officer reported that all machinery was functioning properly.

7. Q. Is there anything at all in your association with the ship, either
from a material point of view or state of training, which might possibly

account for its failure to return from its latest patrol?
A. No. I believe the GROWLER was in top material condition when it left
for patrol and as I have stated before the state of training well above
average. It had an experienced crew with an experienced Commanding Officer,
the Executive Officer and the Division Officers had each made six consecutive
patrols on that ship. All other officers had made at least one.

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The investigating officer informed the witness that he was privileged
to make any further statement covering anything relating to the subject
matter of the investigation which he thought should be a matter of record
in connection therewith, which had not been fully brought out by the previous
questioning.

The witness stated that he had nothing further to say.

The witness was duly warned and withdrew.

A witness called by the investigating officer entered, was informed of
the subject matter of the investigation, and declared as follows:

Examined by the investigating officer:

1. Q. State your name, rank, and present station.
A. John R. Alexander, Commander, E-V(G), U.S. Naval Reserve, Executive
Assistant Coordinator of Refits, Commander Repair and Maintenance Group,
North Wharf area.

2. Q. In what capacity did you serve in connection with the refit of
the USS GROWLER during the period 26 September to 11 October 1944?
A. Task Group Material Officer and Executive Assistant to the Coordinator
of Refits.

3. Q. Describe general material condition of the GROWLER on arrival from
the previous patrol, the important items of work accomplished during the
refit and her material condition upon departure for patrol.
A. The general material condition of the GROWLER was good. Main engines
number one and four and the auxiliary engine were overhauled. Four new
mufflers, elbows and tail pieces were renewed. The circulating water lines
of the air conditioning unit were renewed. The only alteration was the in-
stallation of the mortar type signal projector. All of the machinery units
were given regular inspection and routine repairs and on departure of this
ship the machinery was in very good condition. There were no new radar
or radio equipments installed on this refit as they had been previously
installed. After the refit the ship went out on its trial runs making the
deep dive and all machinery and equipment performed satisfactorily. The
sound test was run after routine dry-docking and conditions were found to
be normal.

4. Q. Do you have any knowledge of how the Commanding Officer considered
this latest refit in comparison with others which he had experienced?
A. Yes. He was exceptionally well pleased with the refit and so stated.

The investigating officer informed the witness that he was privileged
to make any further statement covering anything relating to the subject
matter of the investigation which he thought should be a matter of record
in connection therewith, which had not been fully brought out by the
previous questioning.

The witness stated that he had nothing further to say.

The witness was duly warned and withdrew.

A witness called by the investigating officer entered, was informed of
the subject matter of the investigation, and declared as follows:

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— page 387 —
Examined by the investigating officer:

1. Q. State your name, rank and present station.
A. W.G. Chapple, Commander, U.S. Navy, attached to Submarine Division 182.

2. Q. What was your duty just previous to your present assignment?
A. Commanding Officer USS BREAN.

3. Q. During the 3rd patrol of the BREAN did you receive any instructions
in connection with the USS GROWLER?
A. Yes sir.

4. Q. State the substance of these instructions and your actions in
complying therewith.
A. On 8th of November about 2030 (H) the BREAN received a message
directing her to rendezvous with the GROWLER in the Sulu Sea, to transfer
SJ radar parts. The message did not give the exact position for the
rendezvous, but ordered the GROWLER to transmit to Commander Submarines
7th Fleet the position of desired rendezvous for the 9th. We then trans-
mitted a message to Commander Submarines 7th Fleet, asking them to direct
GROWLER to communicate with us on 2880 kilocycles immediately to arrange
the meeting. We then proceeded to a position near the Cuyos Islands which
we thought would be convenient to effect rendezvous with the GROWLER. On
the 10th we sent a message to Commander Submarines 7th Fleet informing him
that we had not received a rendezvous position or time for the meeting with
the GROWLER and giving our position as 9° 50' North, 120° 50' East. The
same night Commander Submarines 7th Fleet sent a message to GROWLER inform-
ing him of our position. We transmitted blind on 2880 on the 11th at
1644 (H) a dispatch telling the GROWLER to send up rockets on the hour every
hour from 2100 to 2400. If we sighted one of his we were to answer. During
the entire period we patrolled an area in the close proximity to 9° 50' North
and 120° 50' East. On the evening of the 11th we received the orders to
return to base. At 2400 (H) we departed the area and informed Commander
Submarines 7th Fleet of the action taken.

5. Q. Did you have any experience or make any observations in the
operating area about the time in question which could possibly have any
connection with the failure of the GROWLER to keep the rendezvous?
A. Yes sir. Shortly after we surfaced on 8th of November while we were
in Abo Pass we had an "unknown" closing rapidly on our SJ radar. It did
not seem to close fast enough for a plane and seemed to be too fast for
surface patrol. We dove but were unable to pick up any screw noises on our
sound gear. It may be that they were using some low flying night bombers,
something that I had not experienced while we were in our area, about 120
miles north of the area in which the GROWLER was operating.

6. Q. State the exact time and position of this contact.
A. Latitude would have been about 12° 30' North, 120° 40' East. The
time of the contact was at 1842 (H), well after dark.

The investigating officer informed the witness that he was privileged
to make any further statement covering anything relating to the subject
matter of the investigation which he thought should be a matter of record
in connection therewith, which had not been fully brought out by the previous
questioning.

The witness stated that he had nothing further to say.

The witness was duly warned and withdrew.

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— page 388 —
A witness called by the investigating officer entered, was informed of
the subject matter of the investigation, and declared as follows:

Examined by the investigating officer:

1. Q. State your name, rank and present station.
A. F.A. Greenup, Commander, U.S. Navy, Commanding Officer, U.S.S. HARDHEAD.

2. Q. State the general nature of the second patrol of the U.S.S. HARDHEAD.
A. The U.S.S. HARDHEAD was one unit of a coordinated search and attack
group composed of GROWLER, HAKE and HARDHEAD with Commander Oakley,
Commanding Officer, GROWLER, in command of the group.

3. Q. Commencing with HARDHEAD'S departure from Exmouth Gulf describe
your operations and contacts with the GROWLER.
A. HARDHEAD departed Exmouth Gulf at 1320 (zone minus eight time)
October 24, 1944 in company with GROWLER. That night GROWLER evidently
decided to transit Lombok Strait and fell astern. HARDHEAD transited
one day after GROWLER and fell astern. No further contact or communication
was had with GROWLER until 3rd of
November at 1915 (H). Exchanged calls with GROWLER with SJ radar in latitude
12° 57' North, longitude 120° 1' East. At this time GROWLER and HARDHEAD
were on assigned patrol station. At 2043 (H) 4th of November rendezvoused
with the GROWLER and HAKE as previously directed by GROWLER and received
schedule of patrol stations assigned on area grid chart. At 2050 (H)
6th of November received message from GROWLER to take scouting position
at 0300 (H) 7th of November, in accordance with coordinated search and
attack group doctrine, with GROWLER as guide, in position 13° North,
longitude 119° 11' East. GROWLER was unable to contact HAKE on the area frequency
(2880) and directed HARDHEAD to relay. At 2441 (H) HAKE receipted to
HARDHEAD for the message. At this time it is believed that the three
submarines were within a circle of about 25 miles radius. In view of the
fact that there was no considerable difference in the distances between
GROWLER and the HARDHEAD and HAKE, I am unable to account for the GROWLER'S
inability to raise the HAKE. At 2245 (H) 7th of November had SJ contact
with the GROWLER, bearing 072 true, range 5,000 yards, latitude 13° 52'
North, longitude 119° 26' East. Exchanged calls using SJ radar. At 2307 (H)
7th of November received message from GROWLER on the area frequency
(2880 kilocycles) assigning day to day patrol stations for 8th of November
scouting assignment for the attack group effective 1900 (H) 8th of November
and directions to shift the area one grid north in accordance with change of
patrol area, as directed by Commander Submarines 7th Fleet. At this time
GROWLER and HARDHEAD were enroute to day to day patrol stations for the 8th.
At 0133 (H) 8th of November received message from GROWLER by SJ radar to change
course to 090 and search. It is believed that GROWLER had a radar contact
at this time. HARDHEAD had no radar contact but HARDHEAD radar performance
had been erratic during the night. At 0142 (H) HARDHEAD made sight and
radar contact with three ships, one large and two small, bearing 095 true,
range 16,000 yards, latitude 13° 14' North, longitude 119° 42' East. At this time
GROWLER was bearing about 280 true, range 7,000 yards. At 0151 received
message from GROWLER on area frequency (2880) reporting radar contact bear-
ing 097 true, range 25,000 yards. Contact time 0140 (H) 8th of November.
HARDHEAD commenced tracking
and increased speed to gain position ahead of target group. At 0219 (H)
received message from GROWLER on area frequency (2880) "Enemy course 350
speed 14 tracking from port bow". At 0232 message from GROWLER on area
frequency (2880) "Enemy course 350 speed 14 tracking from port bow".
At 0251 (H) HARDHEAD submerged to radar depth with target bearing 138 true,
range 13,350 yards. At 0253 (H) heard an explosion which had the character-
istics of a torpedo explosion. At 0254 (H) target group zigged right to
course 030 true possibly indicating that GROWLER had attacked. At 0257 (H)
heard three distant depth charges. At 0300 (H) HARDHEAD surfaced
to gain position on starboard side of

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— page 389 —
target. At 0321 (H) target zigged left to 305 true apparently taking original
base course. At 0328 (H) HARDHEAD submerged to radar depth, conducted
approach and attack on a tanker escorted by two large PC escorts. When
original radar contact was made on the target group radar operator reported an
indefinite contact on starboard quarter of the target which could have been
an additional escort. Only two escorts were sighted by HARDHEAD during the
approach and attack, however. Two torpedo hits were observed on the target
and two were timed to hit, four stern tubes having been fired on a port
track, torpedo course about 030 true, range at firing 800 yards. Escort
vessels commenced depth charge attack immediately. HARDHEAD went to deep
submergence. Depth charge attack was persistent but the escort vessels lost
contact on the HARDHEAD and the attack appeared to be concentrated in the
vicinity of the torpedo launching position. About 90 depth charges were
dropped during the counter-attack which continued until 1725 (H). HARDHEAD
surfaced at 1727 (H) in daylight approximately 20 miles from the position of
the torpedo attack. At 2100 (H) 8th of November received Commander
Submarines 7th Fleet message designating rendezvous for BREAM and GROWLER
for the purpose of transferring transformer for the GROWLER's SJ radar.
During the night of 8th to 9th November HARDHEAD took station for scouting
by GROWLER. At 0430 (H) 9th of November HARDHEAD reached northern limit of
area latitude 15° 50' North, longitude
118° 40' East without contact. At 0430 (H) 9th of November attempted to call GROWLER on area frequency
(2880 kilocycles) to request instructions. HARDHEAD had no further visual
or radio contact with GROWLER. At 0900 9th of November intercepted follow-
ing message from HAKE to GROWLER on the area frequency (2880) "My 0900 (H)
position 15° 59' North, 118° 23' East DOPE INTERROGATIVE". GROWLER was not
heard to answer call or to receipt for message. In view of failure to
contact GROWLER, HARDHEAD made assignments for HAKE and HARDHEAD patrol
positions and informed Commander Submarines 7th Fleet to that effect.

4. Q. What was the subsequent development of the "indefinite contact"
reported by the radar operator?
A. Initial radar contact made by the HARDHEAD definitely indicated one
escort leading the target and one escort slightly abaft of port beam. These
two escorts were sighted while gaining position ahead prior to the approach.
There were no escorts in sight at the time of the explosion which sounded
like a torpedo and which was followed by three depth charges. After HARDHEAD
surfaced because of poor attack position and submerged to radar depth the
second time, two escorts were sighted through the periscope and the escort
which had been leading the target appeared to have shifted position to the
target's port bow. It is believed that the counter-attack on HARDHEAD was
made by these two escorts. Later (at 1952 (H) 8th of November) HARDHEAD
had radar contact with three escort vessels latitude 14° 11' North, longi-
tude 118° 59' East. These escort vessels appeared to be searching the
vicinity.

The investigating officer then, at 11:55 a.m., took a recess until
12:45 p.m., at which time he returned to the regular place of meeting, and
continued examination of the witness.

5. Q. In view of the GROWLER's failure to regain contact with her group,
subsequent failure to complete rendezvous with BREAM and the absence of any
communication from GROWLER since that date, do you care to make any con-
jectures as to what might have happened to the GROWLER?
A. Eliminating the possibility of loss of GROWLER because of operational
casualty, I feel that it is possible that GROWLER was surprised by an attack
by aircraft. HARDHEAD had numerous night aircraft contacts in this vicinity
and initial SD ranges indicated that they were operating at very low altitude,
initial ranges often being as low as 4 to 5 miles. I further believe that
if Commander Oakley decided that the HARDHEAD was in a precarious position
because of the prolonged counter-attack, that he would have attempted to

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— page 390 —
assist, by coming in to attack the escorts while they were in the act of
counter-attacking the HARDHEAD, and it is within the realms of possibility
that the escorts then made sight and/or sound contact upon the GROWLER
which might explain the prolonged depth charging long after the HARDHEAD
had moved away from the immediate vicinity and effected its escape. The
disposition of the target group immediately after the explosion, which
sounded like a torpedo, excepting the fact that the target zigged radically
to the right, would not indicate that an attack had been made on the target
ship and two escorts with which the HARDHEAD had radar contact and was
tracking. A possible explanation is that sight contact was made on GROWLER
by the port escort, that all explosions were depth charges and that the
target group maintained original disposition and zigged right. This assumes
that the port escort dropped depth charges without following up on contact.

6. Q. Did any subsequent exchange of information with HAKE in the area
throw any additional light on GROWLER's activities?
A. HARDHEAD rendezvoused with the HAKE at 0200 (H) 16 November. HAKE
reported being in position ahead of target group at the time HARDHEAD
attacked, and that the target was observed to sink. HAKE further reported
being forced down by an aircraft contact shortly after the attack, and that
she shared the depth charge attack with HARDHEAD, without suffering any
damage. HAKE reported that she had no knowledge of location of the GROWLER
and did not offer any opinion concerning the GROWLER's disappearance.

The investigating officer informed the witness that he was privileged to
make any further statement covering anything relating to the subject matter
of the investigation which he thought should be a matter of record in
connection therewith, which had not been fully brought out by the previous
questioning.

The witness stated that he had nothing further to say.

The witness was duly warned and withdrew.

The investigating officer then, at 1:45 p.m., adjourned until 10:00 a.m.
Wednesday, December 13, 1944.

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— page 391 —
U.S.S. ANTHEDON (AS24)
Care of Fleet Post Office,
San Francisco, California.
Wednesday, December 13, 1944.

SECOND DAY

The investigating officer then, at 10:00 a.m. adjourned to the
Headquarters of Commander Submarines 7th Fleet and continued his
investigation.

No witnesses not otherwise connected with the investigation were present.

A witness called by the investigating officer entered, was informed of
the subject matter of the investigation, and declared as follows:

Examined by the investigating officer:

1. Q. State your name, rank, and present station.
A. Captain W.J. Tichenor, U.S. Navy, Operations Officer, Task Force 71.

2. Q. Are you the regular custodian of the copy of the operation order
governing the GROWLER's 11th war patrol? If so, please produce it.
A. I am the custodian.

Witness produced a copy of the operation order, copies of which are
appended.

3. Q. Did you brief Commander Oakley on his operations prior to departure
on 11th war patrol?
A. Yes, I did.

4. Q. Will you give a short resume of the procedure and substance of this
briefing along with any other instructions including the general nature of
the scheduled patrol?
A. The GROWLER, HAKE and HARDHEAD were constituted as a coordinated
search and attack group with the Commanding Officer, GROWLER as the Group
Commander, with orders to proceed to South China Sea for patrol in the gen-
eral vicinity west of Mindoro and Luzon. Prior to departure for patrol
Commanding Officers of these submarines were thoroughly and completely
briefed by Commander Jensen, Assistant Operations Officer, by the Intelli-
gence Officer and by myself. They were also interviewed by the Task Force
Commander prior to departure. In this briefing it is endeavored to inform
the Commanding Officers of all available information of interest or con-
sidered essential for the proper conduct of the patrol. It is believed
the briefing of the Commanding Officer of the GROWLER was thorough and to
his complete satisfaction.

5. Q. Was any mention made of, or special instructions given concerning
mineable waters?
A. The operation order of the GROWLER carried the notation "Use deepest
water routes in transiting Sibutu Passage and Mindoro Strait". General
instructions concerning mineable waters are outlined in Annex BAKER of the
operation plan carried by the GROWLER. Detailed information on enemy mine
fields was contained in the intelligence annex furnished the GROWLER, as
well as detailed information on friendly mine fields.

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— page 392 —
6. Q. Has any information been received as to the possibility of the
presence of floating or drifting mines in the GROWLER's area?
A. Upon return from patrol the GUITARRO reported "On the night of
22 October a series of floating mines were observed close aboard off the
southwest tip of Mindoro. GUITARRO was forced to dive to go under them.
It is believed these mines were used in conjunction with the Joint Task
Force movements through the strait on the night of 23-24 October". The
position of these mines was in the assigned patrol area of the GROWLER.

7. Q. Will you outline the sequence of events, including messages
received and sent, leading up to the attempted rendezvous between the
GROWLER and the BREAM?
A. On 7 November a dispatch was sent directing the GROWLER wolf pack to
move from his present patrol area west of Mindoro (Area Able 4) to the area
west of Luzon between Manila Bay and Cape Bolinao (Area Able 3) at dark
8th of November. On the early morning of 8th of November a dispatch was
received from the GROWLER (071530) which said that he had made temporary
repairs to his SJ radar and that he urgently needed spare parts for same,
requesting delivery from another submarine. On 8th of November a dispatch
(081152) was sent to the GROWLER and BREAM directing the GROWLER to advise
us his desired rendezvous position with the BREAM so that the transfer of
radar parts requested could be effected. No reply was received from the
GROWLER. The BREAM, believed then enroute Fremantle in the vicinity of
Mindoro Strait or Northern Sulu Sea, was directed to delay in that area
until GROWLER had designated rendezvous position. The BREAM on the early
morning of 9th of November by dispatch (081800) requested the GROWLER to
call the BREAM on the voice frequency (2880 kilocycles) to arrange a
meeting. On 10th of November dispatch (100608) was received from the BREAM
stating that time and place for appointment with GROWLER was still unknown
as no reply had been received from the GROWLER as to his desired
rendezvous position. When this message was received we immediately sent a dispatch (101131)
to the GROWLER directing him to advise the time he could effect rendezvous
with the BREAM in the BREAM's given position. No reply from the GROWLER
was received. On 11th of November by dispatch (110851) we told the BREAM
that if he had no prospects for rendezvous with the GROWLER by midnight of
the 11th to come on home. On early morning of 12th of November by dispatch
(111848) the BREAM reported that using the voice frequency 2880 kilocycles
packets hourly with no resultant contact. On 12 November by dispatch
(120717) the GROWLER was directed to advise of desired rendezvous position and time with the REDFIN to effect transfer of
necessary radar parts. On 12th of November the REDFIN reported that he was ready for
a rendezvous with the GROWLER. As all efforts to effect a rendezvous with
the GROWLER had thus far proved unsuccessful, a dispatch (130808) was sent
on 13th of November addressed to the REDFIN and GROWLER directing proposed
rendezvous with GROWLER is cancelled and for the REDFIN to proceed to
Mios Woendi. No communication has been received from the GROWLER since the
dispatch (071530) first mentioned.

8. Q. Have you any knowledge of any available intelligence information
which throws any additional light on the GROWLER's whereabouts?
A. I have no information which can be definitely associated with the
GROWLER subsequent to her last communication with us.

9. Q. Do you have any other information in connection with the subject
matter of this investigation which you consider of possible assistance?
A. No, I do not.

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— page 393 —
The investigating officer informed the witness that he was privileged to
make any further statement covering anything relating to the subject matter
of the investigation which he thought should be a matter of record in
connection therewith, which had not been fully brought out by the previous
questioning.

The witness stated that he had nothing further to say.

The witness was duly warned and withdrew.

The investigating officer then, at 11:20 a.m., returned to the regular
place of meeting and then, at 11:25 a.m. adjourned until 10:00 a.m. Saturday,
December 16, 1944.

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— page 394 —
U.S.S. ANTHEDON (AS24)
Care of Fleet Post Office,
San Francisco, California.
Saturday, December 16, 1944.

THIRD DAY

The investigating officer then, at 10:00 a.m., continued his investiga-
tion.

No witnesses not otherwise connected with the investigation were present.

A witness called by the investigating officer entered, was informed of
the subject matter of the investigation, and declared as follows.

Examined by the investigating officer:

1. Q. State your name, rank, and present station.
   A. F.E. Hayler, Commander, U.S. Navy, Commanding U.S.S. HAKE.

2. Q. State the general nature of the HAKE's 7th War Patrol.
   A. HAKE was a part of the coordinated attack group consisting of GROWLER,
   HARDHEAD and HAKE. Group Commander was Commanding Officer of the GROWLER.
   Operating area was southwest of Luzon.

3. Q. State HAKE's activities in the assigned area which were connected
   with the GROWLER's 11th patrol.
   A. At 1915 (H) November 4, 1944 HAKE exchanged recognition signals with
   GROWLER by keying SJ radar. At 2101 (H) HAKE lying to, GROWLER came
   alongside for conference. At this time HAKE received patrol assignments
   for remainder of scheduled time in area. Rendezvous was completed at
   2132 (H). No further contact was had with GROWLER (except one garbled voice
   transmission November 6, 1944) until 0150 (H) November 8, 1944, at which
   time I received GROWLER's contact report. While attempting to gain position
   for contact I heard two distant explosions at 0252 (H). At the time I could
   not determine whether they were depth charges or torpedo explosions, nor
   was it possible to determine their exact direction. At 0316 (H) same date
   HAKE made radar contact on a U.S. submarine at a range of 10,000 yards. As it
   was assumed that this contact was on either GROWLER or HARDHEAD no attempt to
   establish identity was made. At 0325 (H) HAKE made radar contact with
   GROWLER's previously reported target group. Target group consisted of one
   large ship and two smaller screens with occasional suggestions of a third
   and even smaller escort. HAKE tracked target and gained position 15,000
   yards ahead on his assumed base course. At 0359 (H) after I had made my
   turn and started in, I heard, saw and felt three torpedo hits on the target
   which immediately burst into flames and sank. At 0405 (H) I started to
   close the scene of action hoping for a shot at one of the escorts. Between
   0410 (H) and 0446 (H) a total of 16 depth charges were heard in the vicinity
   of the previously mentioned attack. At 0452 (H) I submerged due to un-
   favorable light conditions. At 0621 (H) noted 10 distant depth charges.
   At 0740 (H) while coming up from deep submergence and passing at 130' HAKE
   received two close aerial bombs. About an hour later HAKE received first
   depth charge attack from target's escorts. We were held down all day.
   Finally were able to surface at about 2100 (H), at which time we cleared
   area to northward in accordance with dispatch orders. At 0900 (H) the
   following morning I transmitted my position to the GROWLER and asked him
   for any information he might have. GROWLER did not receipt for this message
   and neither did he reply.

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[STAMP: TOP SECRET]

— page 395 —
4. Q. During your alongside rendezvous with GROWLER on the 4th of
November was any mention made of GROWLER having difficulty with SJ radar?
A. No sir.

5. Q. Was any mention made of any material difficulty?
A. No sir.

6. Q. At the time of this rendezvous what were your observations as to
the general demeanor of Commander Oakley?
A. The two boats were alongside. Both Commanding Officers were on their
respective bridges. Commander Oakley seemed enthusiastic over the wolf
pack's chances during the coming month. As rendezvous was terminated he
again emphasized the desirability of making repeated attacks after establish-
ing contact without necessarily waiting for other members of the group to
complete their attacks.

7. Q. Can you think of any matter not previously brought out which might
have any bearing on GROWLER'S failure to return from patrol?
A. No sir.

The investigating officer informed the witness that he was privileged
to make any further statement covering anything relating to the subject
matter of the investigation which he thought should be a matter of record
in connection therewith, which had not been fully brought out by the
previous questioning.

The witness stated that he had nothing further to say.

The witness was duly warned and withdrew.

The investigation was finished, all parties thereto withdrawing.

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[STAMP: TOP SECRET]

— page 396 —
After full and mature deliberation, the investigating officer finds as
follows:

FINDING OF FACTS

Facts deemed established:

1. That the GROWLER, HAKE and HARDHEAD were operating together as a
coordinated search and attack group under command of Commander T.B. Oakley,
junior, Commanding Officer, GROWLER in the proximity of latitude 13° 21'
North, 119° 32' East in the early hours of 8 November, 1944.

2. That at about 0140 (H) 8 November, 1944 the GROWLER made radar contact
on enemy target group bearing 097° true, range 25,000 yards.

3. That the GROWLER relayed information of this contact to HARDHEAD and
directed coordination of attack between these two vessels on this particular
target group indicating that GROWLER was tracking from port bow and ordering
HARDHEAD to attack from starboard bow.

4. That at about 0142 (H) 8 November, 1944 HARDHEAD made radar and sight
contact with this same target group bearing 095° true, range 16,000 yards.

5. That at about 0142 (H) 8 November, 1944 HARDHEAD had radar contact
with GROWLER bearing 280° true, range 7,000 yards.

6. That at about 0252 (H) 8 November, 1944 HAKE heard two distant
explosions the exact type and direction of which were not determined.

7. That at about 0253 (H) 8 November, 1944 HARDHEAD heard an explosion
which had the characteristics of a torpedo explosion.

8. That at about 0254 (H) 8 November, 1944 the target group changed
course to the right to 030° true.

9. That at about 0257 (H) 8 November, 1944 the HARDHEAD heard three
distant depth charge explosions.

10. That at about 0316 (H) 8 November, 1944 the HAKE made radar contact
on a U.S. submarine at a range of 10,000 yards.

11. That at about 0400 (H) 8 November, 1944 the HARDHEAD attacked the
target from its port bow with four torpedoes, obtaining three or four hits,
and HAKE saw tanker sink.

12. That this attack was followed by a depth charge counter-attack which
continued until 1725 (H) 8 November, 1944.

13. That the HARDHEAD surfaced at 1727 (H) 8 November, 1944 approximately
twenty miles from the scene of the torpedo attack.

14. That the HAKE had been subjected to the depth charge counter-attack
without sustaining any damage.

15. That at about 0430 (H) 9 November, 1944 HARDHEAD attempted, without
success, to call GROWLER by radio to request instructions.

16. That at about 0900 (H) 9 November, 1944 HAKE transmitted a message
to GROWLER for which GROWLER did not answer call or send receipt.

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[STAMP: TOP SECRET]

— page 397 —
17. That at 071530 (2330 (H) 7 November, 1944) GROWLER originated a
message reporting temporary repairs to SJ radar and stating urgent need for
spare parts for same.

18. That subsequently a rendezvous was arranged for GROWLER and BREAM to
transfer SJ radar spare parts.

19. That no communication with GROWLER regarding this rendezvous could
be established.

20. That the GROWLER failed to keep this rendezvous.

21. That further attempt to arrange a rendezvous between GROWLER and
REDFIN for same purpose was not successful because of failure to establish
communication with GROWLER.

22. That no communication has been received from the GROWLER since at
about 0232 (H) 8 November, 1944.

23. That no known contact with the GROWLER has been had since at about
0328 (H) 8 November, 1944.

24. That upon departure for its latest patrol the GROWLER was in very
good material condition, the officers and crew were well trained and
organized, and the submarine was in all respects ready to proceed on the
assigned war mission.

25. That the GROWLER had experienced difficulty with its SJ radar
equipment after arrival in the operating area.

26. That the GROWLER had effected satisfactory temporary repairs to the
SJ radar at time his 071530 message was released.

27. That GROWLER had made a radar contact at 0140 (H) 8 November, 1944
on a target group at a range of 25,000 yards.

28. That subsequent messages from the GROWLER indicated that radar contact
was maintained for approximately an hour at the minimum.

29. That the Commanding Officer, GROWLER, Commander T.B. Oakley, Junior,
was an experienced officer of proven ability with an outstanding record as
a wartime submarine captain.

RECOMMENDATION

No steps to improve operational procedures are recommended.

LEON J. HUFFMAN,
Captain, U.S. Navy,
Investigating Officer.

Here is appended a copy of the operation order for USS GROWLER.

- 14 -

TOP SECRET

— page 398 —
FE24-71/A4-3
SECRET
12/gms
TASK FORCE SEVENTY-ONE,
TASK GROUP SEVENTY-ONE POINT ONE,
SS-223, FLAGSHIP,

PERTH, WESTERN AUSTRALIA,
17 October, 1944; 1520.

Operation Order
ComTaskGroup 71.1 No. 150-44

TASK ORGANIZATION

(a) 71.1.15 GROWLER, Commander T. B. OAKLEY, Jr. 1 SS

1. General Situation. Enemy information found in Commander
Task Group 71.1 Operation Plan No. 1-44, of 1 September,
1944. Latest intelligence information and Principal
Japanese Shipping Routes contained in Annex A to this
Operation Order.

Enemy Forces. (a) Estimated locations of Japanese Fleet
Units are: SINGAPORE AREA - four Battleships, nine Heavy
Cruisers, two or three Light Cruisers, ten Destroyers.
BRUNEI BAY, BORNEO - one Battleship, three Heavy Cruisers,
one Light Cruiser, three Destroyers. PHILIPPINE AREA - four
Destroyers. EMPIRE AREA - two Battleships, thirteen
Carriers (CV, CVL and XCV Classes), three Heavy Cruisers,
six Light Cruisers, twenty-five Destroyers.
(b) Submarines are based at SINGAPORE,
SURABAYA, ILOILO, and CEBU. Estimated locations of Sub-
marine Units are: EMPIRE - forty-nine; CENTRAL PACIFIC -
six; PHILIPPINE AREA - nine; SINGAPORE - NORTH BORNEO AREA -
two; EAST NETHERLANDS EAST INDIES AREA - three. In addition,
it is estimated there are approximately ten German Sub-
marines in the FAR EAST AREA, divided between the INDIAN
OCEAN and SUMATRA - MALAY AREA.

Own Forces. Disposition as given in Annex C to this
Operation Order.

2. This Unit will wage unrestricted Submarine warfare against
the enemy as a Unit in a coordinated search and attack
group in order to destroy enemy shipping and to deny the
enemy use of vital traffic lanes.

3. (a) GROWLER destroy enemy vessels.
(1) When directed at about 20 October, 1944, depart
FREMANTLE via the JOINT ZONE in company with HAKE and
proceed to EXMOUTH GULF conducting training exercises
enroute. There fuel to capacity.

- 1 -

— page 399 —
FE24-71/A4-3
SECRET

                                                                                                12/le
                                                                        TASK FORCE SEVENTY-ONE,
                                                                        TASK GROUP SEVENTY-ONE POINT ONE,
                                                                        SS-223, FLAGSHIP,

Operation Order
ComTaskGroup 71.1 No. 150-44                                            PERTH, WESTERN AUSTRALIA,
                                                                        17 October, 1944; 1520.

— page 400 —
END OF REEL
JOB NO. [HANDWRITTEN: NR-159-81]
[HANDWRITTEN: F-108]

| 1.0 | 4.5 | 2.8 | 2.5 |
|     | 5.0 | 3.2 | 2.2 |
| 1.1 | 5.6 | 3.6 | 2.0 |
|     | 6.3 | 4.0 | 1.8 |
| 1.25 | 1.4 | 1.6 |

THIS MICROFILM IS
THE PROPERTY OF
THE UNITED STATES
GOVERNMENT

[SEAL: DEPARTMENT OF DEFENSE, UNITED STATES OF AMERICA (with eagle)]

MICROFILMED BY
NPPSO-NAVAL DISTRICT WASHINGTON
MICROFILM SECTION