U.S.S. CHUB (SS-329) — war patrol report SS-329_CHUB.pdf

— page 1 —
START OF REEL
JOB NO. [HANDWRITTEN: F-108]
[HANDWRITTEN: AR-116-78]

[MICROFILM RESOLUTION CHART]
1.0
1.1
1.25
2.8 | 2.5
3.15 | 2.2
3.5 | 2.0
3.8 | 1.8
4.0 | 1.6
4.5 | 1.4

OPERATOR [HANDWRITTEN: HARRIS]

DATE [HANDWRITTEN: 6-10-78]

THIS MICROFILM IS
THE PROPERTY OF
THE UNITED STATES
GOVERNMENT

[SEAL: DEPARTMENT OF DEFENSE, UNITED STATES OF AMERICA, with eagle emblem]

MICROFILMED BY
NPPSO-NAVAL DISTRICT WASHINGTON
MICROFILM SECTION

REEL TARGET, START & END
NAVEXOS 3968

— page 2 —
[HANDWRITTEN: CHUB (SS -329)
WWII PATROL FILE
ALL MATERIAL ON THIS REEL IS DECLASSIFIED.
FOR DECK LOGS OCTOBER 1944 - DECEMBER 1945
CONSULT NATIONAL ARCHIVES WHICH HAS CUSTODY

J.A. KOONTZ]

— page 3 —
Office of Naval Records and History
Ships' Histories Section
Navy Department

HISTORY OF USS CHUB (SS 329)

USS CHUB was built at the Electric Boat Company, Groton, Connect-
icut. The keel was laid 16 September 1943, and the vessel was launched
18 June 1944. The sponsor was Mrs. Theodore A. Risch of New London,
Connecticut. Mrs. Risch had been chosen by the Welder's Department
of the Electric Boat Company to act as sponsor.

The USS CHUB was delivered to the Navy and commissioned on 21
October 1944, at the Submarine Base, New London, Connecticut, under
the command of Commander Cassius D. Rhymes, Jr., USN. Junior Officers
on board at time of commissioning were Lieutenant Commander Ralph W.
DeLoach, Jr., USN; Lieutenant Robert W. McIntosh, USN; Lieutenant
Robert W. Carroll, USNR; Lieutenant (j.g.) Austin E. Cordray, USNR;
Ensign Evan E. Watts, USN; Ensign John M. Schlicht, USN; and Ensign
Everett B. Clary, USNR.

During the period 25 October to 24 November 1944, the CHUB con-
ducted a normal thirty day shakedown training program, including the
firing of contract torpedo trials at Newport, Rhode Island. The train-
ing program was handicapped by fog and rain.

Departed Submarine Base, New London, Connecticut, 25 November
1944, and arrived Key West, Florida, on 2 December 1944. While there
the ship conducted torpedo firing tests for the Bureau of Ordnance
and conducted sound training exercises with the Fleet Sound School.

Departed Key West, Florida, on 25 December 1944 and arrived Balboa
Canal Zone on 29 December 1944. Conducted a five day training program
off the Perlas Islands.

Departed Balboa, Canal Zone on 8 January 1945, and reported to
Commander Submarine Pacific Fleet for duty. Arrived Pearl Harbor,
T.H., on 24 January 1945. Accomplished voyage repairs and conducted
ten days training. Lieutenant (j.g.) John W. Quinlan, U.S.Naval
Reserve reported aboard for duty.

FIRST WAR PATROL

Departed Pearl Harbor on 13 February 1945 for this vessel's
First War Patrol, under the command of Commander C. D. Rhymes, Jr.,
USN. The patrol was conducted in the Tonkin Gulf, South China Sea
and Java Sea and was of 64 days duration.

On 3 March, the CHUB was attacked by an enemy submarine. An
alert lookout sighted the enemy's periscope shortly before firing,
and immediate high speed evasive action was successful in avoiding
the enemy torpedoes, one of which was observed to broach close aboard
to starboard.

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- 2 - USS CHUB (SS 329)

During this patrol aircraft contacts, periscope sightings, and
floating mines were numerous; but shipping was scarce. Of the many
floating mines sighted, eight were sunk by gunfire.

On 20 March a submerged approach was commenced on a Destroyer
Escort with float plane air coverage. A large zig away at 4,000 yards
denied this vessel a chance to attack, as the target went by out of
range.

On 29 and 30 March, the CHUB spent eighteen hours and much fuel
in an energetic but futile attempt to gain an attack position on an
escort group of 2 Destroyers and 4 Destroyer Escorts. (The merchant
ships of the convoy had been previously sunk by aircraft, leaving only
the escort group). During this long chase the CHUB was forced down
six times and bombed once closely by enemy air coverage. On finally
gaining a good position ahead of the group in bright moonlight, the
CHUB was detected. The two nearest destroyers headed towards and
opened fire with their guns, forcing the submarine to dive. The CHUB
then commenced an approach on the nearest destroyer as it headed in;
but at 5,000 yards range the entire group zigged away and no favorable
firing position could be reached.

On 31 March, the CHUB rescued three aviators in dangerous waters
South of Yulikan Bay. The following remarks pertaining to this rescue
are quoted from the Squadron Commander's endorsement to the patrol
report:

"The highlight of the patrol was the stirring rescue of three
Army Aviators South of Hainan on 31 March. This rescue was accom-
plished close to shore in face of strafing by two Zeros and a report
from the air cover that a Jap DD in the harbor only six miles away was
getting underway. Two Liberators and four Mitchells provided a very
effective low altitude tight defensive screen during this operation.
This rescue is outstanding, not only in the courage and determination
of the Commanding Officer, but also in the fine flight discipline and
courage of the air cover in continuing their tight defensive circle
over the submarine for about 25 minutes, up until the submarine dived
after rescue. This is an example of air cooperation of the highest
order. The determination and courage of the personnel in effecting
the splendid rescue of the aviators in the face of continued strafing
are worthy of high commendation."

On 11 April, the CHUB attempted a night surface attack on an
Otori Class torpedo boat, but was detected and the Torpedo Boat
turned away. The Torpedo Boat was pursued for two hours and a half
but could not be overtaken.

On 12 April, in the Java Sea, the CHUB was bombed closely by a
float plane while diving, causing temporary loss of power. The sub-
marine lost depth control and broached to the surface, becoming an
easy target for a second attack. Fortunately, the plane had dropped
its full load of bombs on the first attack.

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- 3 - USS CHUB (SS 329)

Arrived Fremantle, West Australia, on 18 April 1945, completing
the First War Patrol. Refit was conducted by the USS CLYTIE and the
Relief Crew of Submarine Division 301. No torpedoes had been fired
on this patrol; but three aviators had been rescued. The patrol was
designated successful and the Submarine Combat Insignia was awarded.
Lieutenant Commander W. R. DeLoach and R. W. McIntosh were detached.
Lieutenant (j.g.) R. T. Rehtmeyer and Ensign A. B. Taylor reported
aboard.

SECOND WAR PATROL

Departed Fremantle, West Australia on 14 May 1945 for Second
War Patrol. The patrol was conducted in the Java Sea under the com-
mand of Commander C. D. Rhymes, Jr., USN, and was of 38 days duration.

North of Kangean Island during the afternoon of 20 May 1945 con-
tact was made on a small 600 ton freighter with surface escort and air
coverage. The small freighter was sunk by one torpedo hit.

Twelve hours later an enemy minesweeper, AM24 class (630 tons),
was contacted North of Kangean. Five torpedoes were fired for one
hit. The minesweeper exploded and sank four minutes later. The
antics of the AM, coupled with the fact that it was sunk within three
miles of the spot where the small freighter had been sunk indicated
that the minesweeper was searching for the CHUB. His search was
definitely successful.

South of Borneo before dawn on 1 June 1945, contacted a small
freighter of 1,000 tons escorted by a PC. Made a night surface attack
in 14 fathoms of water, firing three torpedoes from 1,500 yards range,
all of which missed, apparently under-running. At dawn contacted
another small freighter and PC escort near same locality. At sunrise
made a submerged approach in 16 fathoms of water and fired three
torpedoes at 1,500 yards range. All torpedoes were observed to under-
run the target. The CHUB pulled clear at 90 feet then returned to
periscope depth a few minutes later and watched the escort drop a
total of 15 depth charges about 4,000 yards away.

North of Batavia, Java on 5 June 1945 a submerged approach in
shallow water was made on a heavy cruiser which was escorted by one
Destroyer, two float planes, and two bombers. Unfortunately, the CHUB
was detected by planes at a range of 5,500 yards. The cruiser zigged
away and the submarine was bombed closely by one of the planes. Two
days later the same cruiser was sighted again; but could not be closed
for an attack.

Patrolled for one more week in the shallow waters off Batavia in
a small area bounded by Java on the South, the Thousand Islands on the
East, Sumatra on the West, and by reefs on the North. This spot was
nick named "Lake Carol Head" or "The Bird Bath". Patrol in this area
was handicapped by material failures and the constant nuisance of
patrol boats and fishing vessels.

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- 4 - USS CHUB (SS 329)

During the afternoon of 13 June 1945 contact was made while sub-
merged on a convoy of two small ships and two escorts, out of range
for attack. After all night search the targets were again contacted
and a night surface attack was made before dawn. Five torpedoes were
fired for one hit, possibly two, sinking a 1,500 ton freighter. This
attack was made in shallow water of 12 to 14 fathoms and left the CHUB
with a 50 mile run to make to get across a 12 fathom bank. With two
and one half hours of darkness remaining, proceeded at maximum speed
towards deeper water. Shortly before sunrise a patrol boat was sighted
and the CHUB submerged. At this point the chart showed 16 fathoms
but the submarine bottomed at 88 feet. Fortunately, the patrol boat
did not gain contact.

Arrived Subic Bay, P.I.,on 21 June 1945, completing the Second
War Patrol. Refit was conducted by the USS GILMORE and the Relief
Crews of Submarine Division 222. Lieutenant (j.g.) U.S.Navy was de-
tached. Lieutenant David Hume, U.S. Naval Reserve and Ensign Roy K.
Jones II, USN, reported aboard. The Submarine Combat Insignia was
awarded for this patrol and the Commanding Officer was awarded the
Bronze Star Medal. Lieutenant (j.g.) J. W. Quinlan and Lieutenant
(j.g.) J. M. Schlicht were recommended for award of a Letter of Com-
mendation with Ribbon.

THIRD WAR PATROL

Departed Subic Bay on 15 July 1945 for Third War Patrol. The
patrol was conducted in the Java Sea under the command of Commander
C. D. Rhymes, Jr., USN, and was of 34 days duration.

On 24 July, the CHUB attacked with gunfire a large fleet tug
(725 tons) and a small diesel tug (100 tons). Both were driven ashore
on the Java Coast and left in a burning and sinking condition. One
prisoner was picked up. The Submarine then withdrew from the beach
at high speed and 5 minutes later was forced down and bombed by an
enemy plane.

On 5 August, reconnaissance observations of the beached fleet
tug revealed that salvage operations were in progress. An anti-tor-
pedo net had been rigged to seaward and a salvage tug and salvage
barge were alongside inshore. All vessels were being camouflaged.
Just prior to sunset the CHUB surfaced and destroyed the salvage barge
by gunfire, closed the beach to 350 yards and completed destruction
of the large fleet tug with one torpedo fired behind the anti-torpedo
net. Two more torpedoes were fired at the salvage tug, but missed.
The salvage tug was then sunk by gunfire. The CHUB received small
arms return fire from the salvage tug and from the beach.

On 7 August, the CHUB was caught unawares by a float plane and
bombed closely before, during, and after diving. Escape from this
bombing was pure luck. Fortunately, the damage sustained was minor.

On 9 August, the CHUB battle surfaced in shoal water on what was
mistaken for a small coastal vessel, and engaged a Japanese Sub Chaser

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- 5 - USS CHUB (SS 329)

(SC 51 class) in gun battle. A few anxious moments followed until the
Sub Chaser's 40 millimeter gun had been silenced and the Sub Chaser's
attempt to ram had been discouraged by the guns of the CHUB. After a
few minutes of brisk shooting, the Sub Chaser sank on a reef, leaving
her conning bridge still showing, and her colors still flying above
water. Attempts to retrieve the Japanese flag was futile.

On 11 August, the CHUB surfaced in Lombok Strait and attacked a
large Sea Truck, a small tug, and a picket boat with gunfire. The Sea
Truck was sunk and the picket boat damaged. Return fire was received
from shore and from the picket boat. The submarine was forced to
break off the action and dive when an enemy bomber arrived on the scene.

During this patrol additional ammunition was obtained from the
USS BRILL, USS COD, and USS BUMPER. Arrived Fremantle, West Australia
on 17 August 1945, completing the Third War Patrol. Refit was con-
ducted by the USS CLYTIE and the Relief Crews of Submarine Division
301. Lieutenant David Hume, USNR, and Lieutenant (j.g.) J. M.Schlicht,
USN, were detached. The Submarine Combat Insignia was awarded for
this patrol and the Commanding Officer was recommended for award of
the Bronze Star Medal. Lieutenant R. M. Carroll and Lieutenant R. T.
Rehtmeyer were recommended for award of the Letter of Commendation
with Ribbon.

POST WAR PATROL

Departed Fremantle, West Australia on 31 August 1945 in company
with BUMPER, BUGARA and BRILL. Arrived Subic Bay, P.I., on 9 Septem-
ber 1945 to commence training. The CHUB has been retained in the
active fleet.

SUMMARY OF PATROL RESULTS

Number of War Patrols: 3
Number and Type of Ships Sunk: 4 ships & 5 SMC
Total Tonnage of Ships Sunk: 4225 tons
Number and Type of Ships Damaged: 1 SMC
Total Tonnage of Ships Damaged: 75 tons
Aviators rescued while on patrol: 3

The CHUB was based at Subic Bay, P.I., on 1 October 1945. Little
of note occurred during the tour of duty at this base. All underway
operations were for maintaining wartime efficiency of submarine per-
sonnel. Two short cruises, each of about one week duration, broke the
monotony of the strenuous training schedule. The first cruise, in
early November, was to Tizard's Bank, Dangerous Ground, located in the
South China Sea. The second took place in mid-December and consisted

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- 6 - USS CHUB (SS 329)

of mainly, a "Cook's Tour" around the island of Luzon, P.I. On 12
January 1946 the CHUB sailed for the United States in company with
other submarines of this squadron. Crossed the International Date
Line and set the date back one day on 22 January. Arrived at Pearl
Harbor, T.H. 26 January, having sailed in heavy seas throughout the
cruise. Underway for San Diego, California, 28 January, arriving 4
February without mishap. One half of ship's officers and men departed
immediately on leave. Since leaving the United States, 25 December
1944, the CHUB had completed a total of three war patrols, all of
which were successful.

By Directive dated May 1948, USS CHUB (SS 329) was to be sold to
Turkey under appropriation for aid to Turkey.

* * * * *

USS CHUB earned three Battle Stars on the Asiatic-Pacific Area
Service Medal for participating in the following operations:

1 Star/Submarine War Patrol - Pacific -- 13 February to 18 April 1945
1 Star/Submarine War Patrol - Pacific -- 19 May to 18 June 1945
1 Star/Submarine War Patrol - Pacific -- 15 July to 17 August 1945

The SS 329 earned the Navy Occupation Service Medal, Pacific, for
the period of 3 to 6 February 1947.

She also earned the China Service Medal for the periods of 8 to
17 December 1946; and 23 December 1946 to 2 February 1947.

* * * * *

STATISTICS

OVERALL LENGTH                                312 feet
BEAM                                          27 feet
SPEED                                         20 knots
DISPLACEMENT                                  1,483 tons

* * * * *

Restencilled May 1951

— page 9 —
U.S.S. CHUB (SS 329)

SS329/A16-3                                        c/o Fleet Post Office,
Serial (09)                                        San Francisco, Calif.,
[STAMP: DECLASSIFIED] over [TYPED, STRUCK THROUGH: CONFIDENTIAL]           18 April, 1945.

From: The Commanding Officer,
To : The Commander-in-Chief, United States Fleet.
Via : (1) The Commander Submarine Division THREE HUNDRED ONE.
      (2) The Commander Submarine Squadron THIRTY.
      (3) The Commander Submarines, SEVENTH FLEET.

Subject: U.S.S. CHUB (SS 329) - First War Patrol Report.

Enclosure: (A) Subject Report.
           (B) Track Chart. (Comsubs7th only).

1. Enclosure (A), covering the first war patrol of
this vessel conducted in the South China Sea area and the Java
Sea during the period 13 February 1945 to 18 April 1945, is
forwarded herewith.

[SIGNATURE: C. D. Rhymes Jr.]
C. D. RHYMES, Jr.

DECLASSIFIED ART. 0445, OPNAVINST 5510.1C
[HANDWRITTEN: BY OP-09RC DATE 5/25/72]
[STAMP: DECLASSIFIED (struck through)]

[HANDWRITTEN: 124027]
[UNCLEAR: 7 0776]

— page 10 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

(A) PROLOGUE

The keel was laid 16 September 1943 at the Electric Boat Co.,
Groton, Conn. The ship was launched 18 June 1944 and commissioned
21 October 1944. Conducted regular 30 day shakedown training per-
iod in the New London Area, including the firing of control tor-
pedo trails at Newport, R.I. The training period was handicapped
by fog and rain.

Departed Submarine Base, New London, Connecticut 25 November
1944 and arrived Key West, Florida 2 December 1944. Conducted tor-
pedo firing tests for Bureau of Ordnance. On alternate days conduc-
ted sound training exercises with the Fleet Sound School.

Departed Key West, Florida 25 December 1944 and arrived Bal-
boa, C.Z. 29 December 1944. Conducted a five day training period
off the PERLAS ISLANDS under Captain J. G. JOHNS USN. The sched-
ule included Short Range Battle Practice, Shore Bombardment and the
firing, recovery and making ready of 20 exercise torpedoes. All
hands agree that this was the most productive and most interesting
training period we have undergone. The operating schedule is broad,
flexible, and quick functioning. The target groups are well indoc-
trinated and there is little lost motion. Ideal weather, plenty of
sea room, and a comfortable night anchorage explain why such a busy
schedule is not exhaustive. It is highly recommended that the train-
ing period in the New London Area be reduced and the period in Balboa
increased for new construction submarines.

Departed Balboa, C.Z. 8 January 1945 in company with U.S.S.
TENCH (SS 417) and reported to Comsubspac for duty. Conducted pre-
arranged training program with TENCH enroute, including radar track-
ing, end arounds, attacks, echo ranging, signal and communication
drills. Arrived Pearl Harbor 24 January 1945.

Voyage repairs were accomplished by the Submarine Base, Pearl
Harbor and the relief crew of SUBDIV 301. Installed APR, SPA-1, 40mm
gun, and altered periscope well. Did not receive an ST radar. In-
stalled Mk. 7 DRT in conning tower and booster blower in control room.
Modified bow plane hydraulic piping to prevent creeping of planes.
Repairs and alterations were accomplished quickly and efficiently and
the Commanding Officer is well pleased with the cooperation received
from and the work done by the Submarine Base and the Relief Crew.

Conducted ten days training under Commander P. H. ROSS, USN,
Commander R. S. BENSON, USN, and Captain D. C. Mc MILLAN, USN, in-
cluding battle surface firing and firing of nine exercise torpedoes.
Lieutenant(jg) J. W. QUINLAN, USNR, reported aboard as radar officer.
Depermed and loaded. Ready for sea 13 February 1945.

- 1 - ENCLOSURE (A)

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CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

(B) NARRATIVE

File No. | Officers | Rank | No. Patrols
:-------|:|:|:
74884 | RHYMES, Cassius D., Jr. | Commander, USN | Six
82533 | De LOACH, William R., Jr. | Lt. Comdr., USN | Eight
85155 | Mc INTOSH, Robert W. | Lt. Comdr., USN | 0
97004 | CARROLL, Robert M. | Lieutenant, USNR | Seven
223881 | CORDRAY, Austin E. | Lieut(jg), USNR | 0
253682 | QUINIAN, John W. | Lieut(jg), USNR | 0
204204 | WATTS, Evan E. | Lieut(jg), USN | Two
199373 | SCHLICHT, John M. | Lieut(jg), USN | Eleven
258456 | CIARY, Everett B. | Ensign, USN | 0

Ser. No. | Chief Petty Officers | Rate | No. Patrols
:|:|:-------|:
201 32 34 | BROOKS, Charles | CMOMM | Five
381 12 60 | DALLA, Mariano | CMOMM | Three
243 60 70 | HILLMAN, Paul | CEM | Eight
381 17 59 | MERFELD, Marvin E. | CEM | Nine
337 03 22 | SCHMIDT, Fred H. | CMOMM | Five
336 55 95 | SMITH, Clifford G. | CTM | 0
407 23 23 | WELSH, Robert A. | CRM | Six

**13 February (VW) (1)**

1400 | Underway from Submarine Base, Pearl Harbor, T.H. Escorted
     until dark by PC-569. Set course for SAIPAN.

**14 February (X) to 23 February (K) (2-10)**

Enroute SAIPAN conducting day and night training dives,
drills, school of the boat, fire control tracking and simu-
lated attacks. Dropped 18 February from calendar. Passed
four friendly submarines.
1200 | 14 February (X) | Lat. 20-47 N. | Long. 162-69 W.
1200 | 15 February (X) | Lat. 20-27 N. | Long. 168-23 W.
1200 | 16 February (X) | Lat. 20-21 N. | Long. 173-57 W.
1200 | 17 February (Y) | Lat. 20-18 N. | Long. 179-52 W.
1200 | 18 February (M) | Lat. 19-54 N. | Long. 173-54 E.
1200 | 19 February (M) | Lat. 19-39 N. | Long. 167-30 E.
1200 | 20 February (L) | Lat. 19-09 N. | Long. 161-21 E.
1200 | 21 February (L) | Lat. 18-39 N. | Long. 154-44 E.
1200 | 22 February (K) | Lat. 18-39 N. | Long. 154-44 E.
1200 | 23 February (K) | Lat. 17-23 N. | Long. 149-19 E.

**24 February (K) (11)**
Noon: Lat. 15-13 N. Long. 145-42 E.

0539 | Made rendezvous with escort, L.C.I. 1063, and set course for
     Saipan. Delayed almost 3 hours at entrance due to hospital
     ship aground in channel.

- 2 -
ENCLOSURE (A)

— page 12 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

1535 Moored alongside U.S.S. FULTON at Tanapag Harbor, Saipan.
Received 44669 gallons fuel and 870 gallons lube. Topped
off with provisions and fresh water. Conferred with other
C.O.'s but could get no late information on South China
Sea operations.

25 February (K) (12)
Noon: Lat. 15-09 N. Long. 147-23 E.

1000 Departed Saipan escorted by L.C.I. 1063.
1635 Released escort and set course for area. Many friendly
planes in sight throughout the day.
2400 Set clocks back one hour to "I" (-9) zone time.

26 February to 1 March (I) (13-16)

Enroute patrol area via Luzon Strait at two engine speed,
steering by Course Clock during daylight and moonlight.
Conducting training dives, drills, fire control problems,
and school of the boat. Secured SD and IFF when 600 miles
from Saipan. Plan to use them only when considered neces-
sary. Numerous friendly plane contacts during first two
days out of Saipan. Passed two friendly submarines. In one
case at night the SJ operator gave the Minor War Vessel Chal-
lenge because, he said, "It was such a small pip."

1200 26 February (I) Lat. 16-05 N. Long. 140-50 E.
1200 27 February (I) Lat. 18-42 N. Long. 136-11 E.
1200 28 February (I) Lat. 20-39 N. Long. 131-41 E.
1200 1 March (I) Lat. 20-48 N. Long. 126-06 E.

2 March (H) (17)
Noon: Lat. 20-50 N. Long. 120-18 E.

0042 Batan Island picked up on radar at 80,000 yards.
0220 Went to four engine speed in order to transit Balintang
Channel before daylight.
0406 Entered Balintang Channel with APR signal at 155 mega ap-
proaching saturation. PRF of 1000 indicated an airborne
radar.
0415 Ran up SD radar and keyed it once for 3 seconds. Received
pips at 12 and 30 miles which could have been land. If not
airborne, the radar was probably on Batan or Babuyan Island.
0458 Cleared Balintang Channel. APR strong but fading.
0630 Slowed to two engine speed with intention of holding it
for two hours.
0827 Submerged on sighting BETTY at six miles, coming in.
0853 Surfaced. Running at two engine speed.
0901 Sighted unidentified plane to Northward. Possibly the same
plane. Disappeared from view in two minutes.

- 3 - ENCLOSURE (A)

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CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

0931 Sighted three Liberators, Northbound.
0951 Sighted two planes, VAL or BABS, 10 or 15 miles to West,
     which disappeared on a Northerly course.
1000 During ensuing two hours sighted a total of 40 U.S. planes
     Northbound and a total of 98 U.S. planes Southbound.
1410 O.O.D. reported plane to port on parallel course not coming
     in. One officer in the wardroom remarked, "The next thing
     we'll hear will be the diving alarm." Quite true.
1412 Submerged as VAL type plane, fixed landing gear, presented
     a zero angle on the bow after working up towards sun.
1455 Surfaced. No more planes during the day.
2130 APR contact 185 megs, PRF 400, weak to moderate. Soon faded.

3 March (H) (18)
Noon: Lat. 20-38 N. Long. 115-29 E.

0941 Alert lookout and O.O.D. sighted periscope about 3,000 yards
     on starboard bow. Turned away at flank speed. About time
     we steadied down, C.O. and J.O.O.D. observed one torpedo
     partially broach about 200 yards on starboard beam, throwing
     up a breaker of spray about 30 yards long in an otherwise
     calm sea. Adjusted course 10 degrees to parallel apparent
     track. No definite torpedo wakes were seen. Torpedo was
     either Type 92 Electric or Type 95 Oxygen wakeless. No point
     of aim for counter attack when unfriendly nature definitely
     established.
0950 Started easing back to base course in 20 degree increments.
1001 Resumed base course, but held four engine speed for another
     20 minutes.
1034 Submerged to take two torpedoes off charge and put two others
     on charge.
1131 Surfaced after checking for air leaks. Two engine speed.
1239 Another alert lookout sighted periscope forward of starboard
     beam, about 2,000 yards, verified by QM and C.O. Turned away
     at flank speed. Long exposure, not lowered until we put our
     stern to it. Could have been friendly. We are transitting
     Southern edge of a wolfpack area. No indication of torpedo
     fire by sight or by sound.
1248 Started easing back to base course in 20° increments.
1315 Resumed base course by Course Clock at two engine speed.
     NOTE: Standing orders on this vessel are to turn away from
     periscopes unless inside 2,000 yards and well forward of the
     beam; as C.O. feels that the Japs can fire "down the throat"
     too if time is available for a new set up.
1655 Submerged to take two torpedoes off charge.
1727 Surfaced. Heavy rain squalls all around horizon. APR sig-
     nals on 178 megs and 305 megs during the night.

- 4 -
ENCLOSURE (A) 7 [HANDWRITTEN: 1770]

— page 14 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

                                        4 March (H) (19)
                        Noon: Lat. 18-42 N. Long. 111-55 E.

0639    Submerged for training and to shift torpedoes.
0822    Surfaced and resumed course to area.
1034    Submerged on sighting unidentified plane.
1115    Surfaced. Plane could have been friendly as voice and IFF
        APR had been heard shortly before.
1305    Entered waiting area assigned by operation order.
1405    Submerged to shift torpedoes on charge.
1440    Surfaced and set course towards Western edge of area.
2146    Set course for Southern end of area to sound off. APR sig-
        nals on 150 megs, 172 megs, and 190 megs during the night.
        172 megs and 190 megs probably on Hainan Island.

                                        5 March (H) (20)
                        Noon: Lat. 16-39 N. Long. 110-49 E.

0800    Passed to operational control of Commander Task Force
        SEVENTY-ONE. Unable to raise VIXO. Another station offer-
        ed to relay. When asked to authenticate he gave correct
        letters in inverse order. (Japs read from right to left)
        Our message, repeating each group, since we had already
        attempted to transmit blind. At end of message we refused re-
        quests for repetitions of groups as no authentication could
        be obtained.
1200    Set course for Northeast end of our area planning to check in
        again tonight. During the afternoon received instructions
        from Commander Task Force SEVENTY-ONE to join BRILL in coordi-
        nated patrol and suggesting a rendezvous for tomorrow evening.
        Also received our serial ONE back from VIXO; so knew it had
        been received.
1630    Received contact report from BASHAW regarding three DE's head-
        ed Northeast. Went to four engine speed and set course to
        intercept. Subsequent information showed that we could not make
        it; so slowed down.
1810    Set course for newly assigned area.
2140    Sent serial TWO to Comtaskfor 71 acknowledging receipt of
        instructions.
2210    Requested and received rendezvous instructions from BRILL.

                                        6 March (H) (21)
                        Noon: Lat. 16-50 N. Long. 108-46 E.

        Patrolling traffic lane between Tourane and Tulinkan. Do
        not know where BRILL is so are staying well to the North un-
        til daylight.
0423    APR signals for about two hours on 150 megs and 190 megs vary-
        ing from weak to strong. 190 megs believed on Hainan. 150
        megs believed airborne.

                                        - 5 - ENCLOSURE (A)

— page 15 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

0648 Sighted small boat, apparently empty.
0655 Submerged for closer investigation. Found to be empty.
0731 Surfaced and resumed patrol.
0920 Closed and sank a floating mine with rifle fire.
1025 APR signals at 149 megs, PRF 600, weak.
1201 Closed and sank another floating mine, spherical type.
1230 Decided to patrol farther North; as we have sighted consid-
     erable debris in the water, probably vicinity of BASHAW'S
     attack, and am afraid that the debris is distracting the
     attention of our lookouts.
1735 O.O.D. sighted periscope and maneuvered to avoid.
2003 Exchanged recognition signals and calls with BRILL.
2059 Went close aboard BRILL and received instructions via
     line gun and megaphone. Night was so dark that it was dif-
     ficult to make out her silhouette from 200 yards, using bino-
     culars. Our instructions are to patrol the direct route be-
     tween Tourane and the West Coast of Hainan, patrolling South
     of Lat. 17-00 N in the daytime and patrolling at Lat. 16-30 N
     at night (Southern area boundary). BRILL will patrol direct
     route between TOURANE and YULINKAN, at the same latitudes,
     shifting stations with us on night of 13 March.
2130 Stood clear of BRILL and set course for assigned area.
2205 Slowed and converted No. 4 F.B.T. to a ballast tank.
2359 Submerged to flush out No. 4 F.B.T.

7 March (H) (22)
Noon: Lat. 16-37 N. Long. 108-01 E.
0023 Surfaced. Heavy rain squalls all around. Visibility very
     poor.
0356 Radar contact at 4,800 yds. Tracked for one hour on Souther-
     ly course at 3 knots. Apparently small craft.
0500 Secured tracking and patrolled to Eastward for one hour, then
     headed back to regain contact.
0715 Regained contact and closed to 2,600 yards, barely visible in
     the rain.
0737 Submerged for closer investigation. Identified as sailboat.
0813 Surfaced and resumed patrol. Seas are rough and visibility
     so poor that we are continuing to patrol our night patrol
     station, at Southern boundary, 14 miles from shore, where
     we can keep track of our position by radar cuts on land.
     Small probability of plane detection in this weather.

8 March (H) (23)
Noon: Lat. 16-47 N. Long. 107-56 E.
0000 Started tracking small unidentified contact, picked up at
     6,000 yards by SJ. Tracked at 2 knots on course 070° T.
     Still a very small pip at 3,500 yards, obviously a small
     craft. So stood clear and resumed patrol.
0106 Radar contact at 8,500 yards, identified as the BRILL.

- 6 - ENCLOSURE (A)

— page 16 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

0430 Headed North to patrol assigned daylight station.
1307 Radar contact 6,000 yards. Operator lost contact while shift-
     ing to hand train. Regained contact shortly at 3,200 yards,
     just as an American Liberator broke out of a nearby rain
     squall. We were certainly lucky that it was a friendly plane.
     Learned a lesson in the handling of initial contacts. Will
     take couple of checks on PPI before shifting to hand. No
     warning by APR or voice of plane's approach.
1719 Set course for rendezvous with BRILL.
2040 Picked up APR at 112 megs. Wonder who's keying his SD.
2120 Exchanged recognition signals with BRILL. Sea too rough and
     visibility too poor to go close aboard. Received instructions
     via blinker gun, then set course for assigned station.
2200 Swung ship on APR signal, 176 megs, 200 PRF, keyed continu-
     ously, slow sweeping varying from weak to saturated at 8/10
     gain. Believed land based at this time but was later definite-
     ly determined to be airborne.

                                   9. March (H) (24)
                         Noon: Lat. 17-28 N. Long. 108-25 E.

0000 Patrolling night station at Southern boundary of area. Heavy
     sea from Northwest, visibility poor.
0430 Received message that two bombers and four fighters would
     make shipping strike on Southeast Hainan. We were not as-
     signed to lifeguard station but were told to guard frequencies
     if possible.
0500 Set course to head up towards HAINAN. Notified BRILL.
     Sighted several sailboats during the morning. Guarded
     lifeguard frequencies from half hour before until one hour
     after scheduled strike time. Nothing heard. Strike may
     have been delayed by weather.
1544 Submerged on sighting unidentified plane at 10 miles.
1615 Surfaced and set course for night patrol station. During
     evening picked up keyed APR signals at 280 megs and 157 megs.

                                  10 March (H) (25)
                         Noon: Lat. 16-38 N. Long. 108-26 E.

0145 Patrolling night station, 11 to 15 miles offshore, North of
     Tourane.
     Radar contact, 5,300 yards, which tracked at 4 knots down
     wind. Very small pip at 4,000 yards. Obviously sailboat
     or patrol craft. Resumed patrol.
0430 Set course for daylight patrol station, 30 to 40 miles North
     of Tourane Harbor.
0920 APR signal 153 megs, 600 PRF, nothing sighted. Visibility
     improved today and sea calming down.
1104 Sighted sailboat and gave it good clearance.

                                       - 7 -
                                                           ENCLOSURE (A).

— page 17 —
CONFIDENTIAL - U.S.S.S CHUB (SS 329) FIRST WAR PATROL REPORT.

10 March (H) (26)

2000 Patrolling assigned night patrol station 11 to 15 miles
     North of Tourane Harbor at Southern area boundary.
2010 SJ contact 11,700 yards, plane, closing fast on steady bear-
     ing. Submerged at range of 8,000 yards.
2024 Surfaced, with SJ and APR showing all clear.
2025 Submerged to 44 feet with contact at 12,000 yards closing.
2026 Kept SJ on him and observed him sheer off, apparently cir-
     cling.
2028 Surfaced with contact lost at 17,000 yards opening.
2036 Contact at 15,000 yds, closing fast with no change in bear-
     ing. Submerged when range closed to 6,000 yards.
     Eased up to 42 feet and made careful sweeps of both bands of
     APR. Picking plane up intermittently at ranges of 17,000 to
     30,000 yards, apparently catching him when he banked over in
     steep turns, showing increased wing surface. Do not want to
     be kept down, as this plane may be air coverage for a convoy.
2053 Ran up SD mast and keyed it once. No contact. All clear on
     SJ and APR.
2054 Surfaced and started opening out to Northward on 4 engines.
2109 Picked up plane again at 17,000 yards coming in on a "Bee"
     line. Submerged when range had closed to 6,000 yards.
2126 Eased up to 38 feet and plane came in again. Went to peri-
     scope depth for 5 minutes, then returned to 44 feet. Con-
     tinued fruitless search of APR bands.
2225 Keyed SD radar once, no contact. All clear on SJ and APR.
2226 Surfaced and opened out to Northwest on 4 engines.
2253 Submerged for fifth time tonight as plane came in fast on
     steady bearing. Last range 4,400 yards.
2303 Returned to 42 feet. Picked plane up several times at
     ranges of 18,000 to 22,000.
     This is a very large plane, probably a MAVIS, and he cer-
     tainly has excellent radar, having come straight in on us
     each time. Most careful search of both bands of the APR
     have been fruitless. His radar is apparently above 1000
     megs.
2358 Surfaced after keying SD radar once and opened out on 4 en-
     gines towards our daylight patrol station.

11 March (H) (26)
Noon: Lat. 16-59 N. Long. 108-16 E.

0008 Picked up plane momentarily at 17,800 yards, and later at
     38,000 yards, apparently banking.
0100 Slowed to one engine speed. No further contact.
0123 Commenced patrolling our daylight patrol station, 30 miles
     North of Southern area boundary.
0555 Weak APR signals at 157 megs, half saturated, sweeping.
0803 Submerged to shift torpedoes on charge.
0836 Surfaced and resumed patrol. Guarded reconnaissance and
     distress frequencies.
1227 Submerged to shift torpedoes on charge.

- 8 -
ENCLOSURE (A)

— page 18 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

1246 Surfaced and resumed patrol.
1709 Closed and sank mine, spherical horned type, with 20mm after
     hitting it numerous times with rifles.
1821 Closed and sank another mine. This one exploded, giving us
     quite a jolt from range of about 75 yards. Such range had
     been necessary to avoid waste of ammunition.
2100 Patrolling assigned night station. Picked up SJ interfer-
     ence, apparently from BRILL.
2231 SJ contact, intermittent, in direction of TOURANE. Shows
     all the characteristics of a plane circling on station.
     However, cannot afford to turn down the possibility of
     ship contact, so closed range to 12,000 yards to investigate.
     Lost contact completely.
2308 Reversed course and headed away. Believe plane must have
     gained contact when we swung broadside to; or he may have
     gained contact earlier and climbed above the elevation range
     of our SJ, thereby causing our loss of contact. Nothing on APR
     but he could have been keying infrequently, with-
     out our catching it in our routine sweeps of the APR band.
2313 APR signal, 176 megs, 200 PRF, half saturated, continuous
     keying getting stronger.
2322 SJ contact at 10,000 yards, plane, coming in fast.
2323 Submerged when range closed to 6,000 yards.
2340 Came to 44 feet and picked up 2 planes intermittently on SJ
     radar with no signals on APR. Both planes circling.

                          12 March (H) (27)
               Noon: Lat. 17-03 N. Long. 108-02 E.

0030 Surfaced on course 330° T after keying SD once for 3 sec-
     onds. All clear on SJ. No signal at 176 megs.
0045 APR signal, 176 megs, 200 PRF, PW 7-10, half saturated and
     getting stronger.
0054 Keyed SD radar, contact 12 miles, APR saturated, 9/10 gain.
0055 Keyed SD radar, contact 10 miles, APR saturated, 7/10 gain.
     Changed course to 000° T. (Believe our SD reads high by
     about 1 or 2 miles).
0056 SJ contact 9,000 yds, APR saturated, 5/10 gain. Plane com-
     ing in from 170° relative.
0057 Submerged. Last range 4,000 yards. Since the APR reception
     pattern approaches a null ahead and astern, it is believed
     that this APR signal would have saturated at considerably
     greater ranges for a plane coming in from the beam.
0109 Came to 42 feet and started searching. Nothing on APR or
     SJ. This is a smaller plane than the one that heckled us
     last night.
0143 Surfaced after keying SD radar once for 3 seconds. Opened
     out to Northwest. Receipted for BRILL message that search
     would search for downed aviators.
0400 Set course for daylight patrol station.

                               - 9 -                               ENCLOSURE (A)

— page 19 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

0721 Closed and sank mine, staying outside 100 yards and using up
     several pans of 20mm ammunition.
0830 Received word from BRILL that she was returning to station.
0933 Closed and sank another mine, with 20mm fire.
0953 Closed and sank another mine. This one exploded and some
     shrapnel landed on deck.
     Sighted several sailboats during the day, altering course
     as necessary to give them good clearance. There are very
     few soundings on the chart for this area; so we are taking
     periodic ones when all clear and recording them.
2125 Arrived at our regularly assigned night patrol station and
     found that we were expected.
2127 SJ contact, plane, closed to 5,400 then opened beyond 6,000
     with rapid change in bearing, then turned and headed in.
2128 Submerged when range closed again to 5,400.
2214 Surfaced and resumed patrol. No APR warning of this plane.
2237 SJ contact 5,900 yards. Tracked at 2 knots on 125° T. Lost
     contact at 7,000 yards. Obviously another sailboat. Be-
     lieve that our effectiveness on this station is now definite-
     ly limited after being detected three straight nights. How-
     ever, in conjunction with the BRILL we do constitute some-
     thing of a traffic blockade. Believe it would be better to
     have several alternate stations and rotate them periodically;
     one close inshore off HUE River or TIGER Island, and one near
     YULINKAN BAY or LING SUI BAY. Also a couple of days submer-
     ged patrol South of Sugar Loaf Point, SE Hainan might prove
     worthwhile.

                                   13 March (H) (28)
                         Noon: Lat. 17-01 N. Long. 108-00 E.

0235 SJ contact 21,000 yards in direction of land but apparently
     separated therefrom. Tracked at zero speed in 13,000
     yards where navigational fix and sounding of 12 fathoms
     showed our target to be a bump on a sand bar near mouth of
     HUE River.
0532 SJ contact 8,550 yards. Tracked on 125° T at 4 knots.
     Suspected a sailboat but hoped it might be a goa truck.
0632 Submerged 7,000 yards ahead for closer investigation. Iden-
     tified target to be a large open native sailboat.
0726 Surfaced. Proceeding to day patrol station. Many sailboats
     sighted during the day. Some large ones picked up on SJ at
     10,000 yards. Drizzling rain, low ceiling, visibility vari-
     able from 2,000 to 4,000 yards.
2000 Shifted night patrol stations with the BRILL. Patrolling
     East of BRILL at Southern boundary of our area on traffic
     route between TOURANE and YULINKAN.
2340 APR signal 112 megs, 2 minute intervals. Believe BRILL is
     using SD. Few minutes later contacted BRILL on SJ.

                                   - 10 -                                  ENCLOSURE (A)
                                                                           [HANDWRITTEN: 7 0775]

— page 20 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

14 March (H) (29)
Noon: Lat. 18-06 N. Long. 110-16 E.

0035 Received message from BRILL ordering us to commence search
     for downed aviator, Southeast of Hainan, and telling us
     that she would take lifeguard for scheduled morning strike.

0042 Went to four engine speed and set course for point 20
     Southeast of Sugar Loaf Point. Unfortunately, this aviator
     has been in the water for about 14 hours and we are 140
     miles from the reference point. The delay in receiving the
     word, plus the long distance to travel, will make the search
     more difficult.

0716 APR signals at 193 megs and 149 megs, apparently shore based
     and sweeping. These signals persisted intermittently through-
     out the day, varying from weak to saturated at 7/10 gain.

0945 Sighted formation of 5 enemy fighters, HAP, flying high and
     passing fairly close to port. They are apparently up to in-
     tercept our bombers during the strike on Yulinkan. Planes
     made no move towards us, so remained on surface.

0956 Arrived at initial point. Proceeded 5 miles Northeast of
     initial point and commenced search. Prevailing wind and sea
     for past 24 hours have been from Northeast. Consequently,
     pilot will have drifted to the Southwest. Started an ex-
     panding ladder type search, retiring along base course 225°,
     with search legs normal to the base course. Using 3 engine
     speed in order to cover as much area as possible during
     daylight.

1220 Received word from BRILL that she was joining the search.
     BRILL ordered us to search North of a line running 225° T
     from Lat. 18-00 N. Long 110-00 E.

1221 Altered course and continued search in assigned sector.
     Keyed SD intermittently for 10 minutes to check strong APR
     signal.

1355 Sighted BRILL patrolling sector Southeast of us. She has
     SD mast up. Raised our mast again and resumed keying at
     2 minute intervals.

1420 SJ and sight contact on two float planes, PETE, range
     13,000 and 16,000 yards crossing our bow in edge of rain
     squall. Notified BRILL, who deciphered the message as two
     enemy submarines. (Weakness of WOPACO - An "S" being re-
     ceived as an "H" changed the meaning from aircraft to submar-
     ine).

1548 Sighted object floating in the water. Closed to identify.

1600 Identified object as gasoline tank from a U.S. aircraft.
     The tank was rectangular in shape with one side rounded, but
     not streamlined. The shape and size of the tank indicated
     that it was an internal tank, having apparently been mounted
     inside the wing of a plane.

1630 APR signal at 193 megs is now saturated with 6/10 gain. We
     are about 17 miles from estimated position of this radar sta-
     tion, broadside to.

- 11 - ENCLOSURE (A)

— page 21 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

1750 Sighted 2 U.S. Liberators and 3 Lightning fighters with
     belly tanks headed away from Hainan. Looks as if the time
     schedule of the strike had been changed from morning to
     afternoon. Nothing heard on VHF or APR.
1915 Notified BRILL of results of search.
1950 Received orders from BRILL to return to patrol station.
1955 Discontinued search. We have covered approximately 600
     square miles of area, along a line extending 50 miles
     Southwest of initial point, and have expended approximately
     5,000 gallons of fuel. It is regretted that no search
     plane was available to assist in the search and home us on.
     A plane could have covered as much area in one hour as we
     did in ten hours.

     **15 March (H) (30)**
     Noon: Lat. 16-52 N. Long. 108-27 E.

     Patrolling traffic route between Tourane Bay and Yulinkan
     Bay.
1310 Received word from BRILL that she had sighted enemy torpedo
     wake and was now patrolling submerged. Set course North-
     east to open out from coast on same traffic lane. Contin-
     uing surface patrol.
1624 Strong APR signal, 176 megs, airborne, increasing to satu-
     ration. Started swinging ship to get approximate bearing
     and put SD in standby condition.
1627 Signal saturated at 9/10 gain. Keyed SD; no contact.
1630 Signal saturated at 7/10 gain. Keyed SD; contact 15 miles.
     Immediately thereafter sighted plane, EMILY, on port bow
     and submerged. Remained submerged and conducted tracking
     and fire control drills. Exercised crew at battle stations.
1846 Surfaced and set course towards BRILL's vicinity. Later
     sent message to BRILL requesting rendezvous and received
     instructions relative thereto. The BRILL had a torpedo
     fired at her on the same station where we were forced down
     by aircraft 8 times in three nights. The BRILL was forced
     down twice on the same night that we were forced down five
     times. The C.O. feels that we have patrolled too long on
     one beaten path, that our presence and approximate location
     are known, and that any traffic will be routed around us.
2018 Reduced speed for forty minutes while greasing topside.
2200 Reduced speed for forty-five minutes while converting No.
     3 F.B.T. to a ballast tank.
2347 Picked up SJ and SD interference. Exchanged calls with
     BRILL. We are not using our SD.

     **16 March (H) (31)**
     Noon: Lat. 17-47 N. Long. 109-37 E.
0015 Went close aboard BRILL and communicated by megaphone.
     [HANDWRITTEN: 7 0776]
     - 12 - ENCLOSURE (A)

— page 22 —
CONFIDENTIAL -
U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT

BRILL agreed that it was a good idea to shift up towards
Yulinkan for a few days. Requested and received permis-
sion to patrol submerged a few days close inshore off
Ling Sui Bay and Ling Sui Point. BRILL said she would
cover West and Southwest approaches to Yulinkan.
0031 Stood clear of BRILL and set course for new station. Will
not reach it before afternoon, so plan to stay at least 20
miles offshore and run on surface.
0618 Submerged to flush out No. 3 F.B.T.; blowing and venting it
several times at 125 feet.
0654 Surfaced and resumed course. Sighted sailboat.
0911 APR signals at 193 megs and 147 megs. Shore based radar
sweeping intermittently throughout the day. Signal strength
varying from weak to saturated with 8/10 gain.
1330 Fix on land shows us to be 16 miles off Cape Gaalong. De-
sire to remain undetected so altered course to diverge
around the shoal water that lies Southeast of Ling
Sui Point.
1834 Submerged for trim and training.
1857 Surfaced. Running trimmed down in view of shoal water spot
in vicinity labelled "Position Doubtful" on the chart.
1912 Altered course to close coast for night patrol.
2104 SJ contact at 20,000 yards, tracking speed zero. Closed and
identified as Tien Fung Rock.
2207 Patrolling line parallel to coast, 4 miles off Tien Fung,
7 miles off the coast. Patrolling line 045 - 225° due to
heavy sea and 2 knot current from the Northeast.

17 March (H) (32)
Noon: Lat. 18-15 N. Long. 109-54 E.

0631 Submerged 5 miles off Tien Fung Rock. Set course to pass
between Ling Sui Point and the shoal spot that lies 6 miles
Southeast. Soundings on this chart are very scarce so we
are taking periodic soundings in conjunction with land fixes
to supplement the meagre data shown on the chart.
0800 Passed between Ling Sui Point and the charted shoal spot.
Sound picked up, reported, and tracked strong surf noise on
the reef, bearing for the reef, so the question mark on the
chart can be removed. The reef is there. Current checking
at 2-1/2 knots along the coast.
1148 Conning officer sighted low flying bomber, BETTY, and went
to 100 feet for 15 minutes.
1222 False indication of tremendous increase in current. Later
decided that sudden shift in position was caused by shift
of landmarks used for cross bearings. Hainan Island is
poorly surveyed.
1320 Started working out to seaward at 75 turns, making good
about one knot against the current.

- 13 - ENCLOSURE (A)

— page 23 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

1923 Surfaced 13 miles Southeast of Sugar Loaf Point. Notified
other boats that our radar was out and later that it was
operating again. Heavy sea from Northeast. Worked around
to East of shoal water and started patroling line 4 miles
off Tien Fung Rock. Intermittent APR signals from shore
based radar.

18 March (H) (33)
Noon: Lat. 18-23 N. Long. 110-09 E.

0621 Submerged 6 miles off Tien Fung Rock and set course to round
the rock and close the coast. Taking periodic one ping
soundings in conjunction with land fixes. Numerous sail-
boats to South of us. Decided to remain North of them and
patrol close inshore off Ling Sui Point.
1030 We are 5,000 yards off the coast and 4,500 yards from a
small offshore island. A small building observed on the
island may be an observation post. Set course to diverge
the coast.
1038 Sighted patrol plane, MAVIS, 2 or 3 miles distant, search-
ing. Sea choppy, so took frequent short looks and tracked
him out of sight over flat land towards small bay.
1052 Sighted same plane at 2 miles headed towards. Went to 90
feet and changed course to open out from coast.
1059 Two distant depth bombs, followed by three more during the
next two minutes.
1115 Returned to periscope depth. Nothing in sight. There are
three possible explanations for those bombs:
(1) Some of the native sailboats may have listening gear,
and may have heard us taking periodic soundings.
(2) We may have been sighted from the shore and our approxi-
mate position reported, although sea was choppy.
(3) Plane may have been suspicious or may have been doing
area bombing ahead of a convoy.
Doubt is plane would have dropped five in quick succession
unless our presence was actually suspected. Decided to
move Northeast and patrol a line 6 miles offshore, not
wanting to be scared out completely and miss a possible
convoy.
1334 Fire in the pump room, controller panel. Extinguished it.
1540 Set course to open out from coast.
1929 Surfaced 13 miles offshore. Plan to work in closer to
shore when charge is well along and dive tomorrow in ap-
proximately the same place.
2036 Received message from FLOUNDER telling us to rendezvous at
a spot 92 miles from our present position. Sent position
and ETA to FLOUNDER. Set course to round shoal water, pro-
ceeding to rendezvous.
2200 SJ contact on unidentified plane. Did not close. Satura- 7 0776
ted APR signals at 193 megs during the evening.

- 14 - ENCLOSURE (A)

— page 24 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

                                                                19 March (H) (34)
                                                Noon: Lat. 17-43 N. Long. 109-20 E.

0258        Exchanged calls with FLOUNDER and communicated via SJ.
            Tried VHF with no luck. We were told to watch Hainan for
            next few days. FLOUNDER will watch Tourane. We told
0346        FLOUNDER that 176 megs on APR was a night plane.
            Good clear and set course for HAINAN. Since we have insuf-
            ficient time remaining before daylight to reach a suitable
            position for close inshore submerged patrol, plan to patrol
            Southern approaches to Yulinkan on the surface today.
0925        Patrolling across Southern approaches 20 to 30 miles off-
            shore. Strong APR at 147, 190, 193 megs, shore based.
1349        Submerged on sighting 2 engine bomber, BETTY, coming in.
1509        Surfaced and resumed patrol on reverse course.
1539        Submerged on sighting 2 engine bomber, BETTY, at about 7
            miles range.
1635        Surfaced. Heavy rain squalls beyond horizon.
1826        Sighted 2 engine bomber, BETTY, headed towards Yulinkan.
            SJ contact on same plane at 29,000 yards, opening.
2136        APR signal at 147 megs saturated at 6/10 gain. We are 16
            miles South of Yulinkan. Set course to work around to East
            of Yulinkan. Plan to make submerged patrol off Ling Sui
            Bay tomorrow.

                                                                20 March (H) (35)
                                                Noon: Lat. 18-18 N. Long. 109-56 E.

0624        Submerged 21,000 yards South of Sugar Loaf Point. Closed
            coast and started patrolling line between Ling Sui Point
            and Gaalong Point across mouth of Ling Sui Bay. Sea flat
            and periscope foggy. Numerous sailboats in sight all day.
1532        Sighted 2 engine bomber, BETTY, making a thorough patrol
            sweep on this area, indicating possibility of traffic. De-
            cided to patrol close inshore longer today before opening
            out for surfacing.
1700        Patrolling 7,000 to 8,000 yards Southeast of Gaalong Point.
            Sea flat calm, visibility excellent, but periscope fogged.
            Conning Officer sighted float plane, PAUL, close aboard and
            went to 80 feet.
1723        Conning Officer sighted float plane, PAUL, close aboard and
            went to 80 feet.
1727        Sound picked up echo ranging bearing 053° T. Came to peri-
            scope depth.
1728        Sighted 2M (UN-2 Class) bearing 051° T, range 8,100 yards,
            angle on bow 65° port. Went to battle stations and came to
            normal approach course. Bow wave indicated better than 15
            knots. Float plane air coverage.
1734        At 7,300 yards target zigged towards giving 35° port angle
            on the bow. Flooded tubes at 6,500 yards and opened outer
            doors at 4,300 yards. Target tracking at 16.5 knots.

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CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

20 March (G) (35)

1738 At 4,000 yards target zigged away. Did not fire. Target's
     subsequent courses followed the contour of the coast as he
     passed between us and land outside of firing range with us
     between 5,000 and 6,000 yards offshore.
1804 Secured from battle stations, drained tubes and checked
     torpedoes. Target disappearing on bearing 238° T (within
     5° of reciprocal of initial bearing).
     COMMENT: Believed our presence was suspected. Echo rang-
     ing started loud and clear after air coverage had been
     sighted. No previous weak pinging heard. After a few min-
     utes of long scale pinging there was a pause followed by a
     series of pings similar to a challenge; then another pause
     as if awaiting a reply.
2005 Surfaced 7 miles Southeast of Gaalong Point. During the
     night patrolled a North-South line 14 miles East of Gaalong.

21 March (H) (36)
Noon: Lat. 18-16 N. Long. 109-55 E.

0008 SJ contact on unidentified aircraft. Did not close.
1612 Submerged 17,000 yards South of Sugar Loaf Point. Pat-
     rolled across mouth of Ling Sui Bay, between Gaalong Point
     and Ling Sui Point. Numerous sailboats in sight all day.
     Periscopes foggy. Sea flat calm. Running 90 feet 10 min-
     utes between looks.
1948 Came to 44 feet preparatory to surfacing. SJ contact on un-
     identified aircraft at 2,800 yards. Returned to periscope
     depth. On next try same plane was contacted at 15,000 yards.
2046 Surfaced and set course to work around shoal spot. During
     the night patrolled line 5 miles off of Tien Fung Rock.

22 March (H) (37)
Noon: Lat. 18-18 N. Long. 110-03 E.

     By dawn visibility is only 1,000 yards due to heavy low
     hanging fog. Sea flat and no wind.
0800 Visibility improving rapidly. Land visible at 10 miles.
0818 Submerged 5 miles East of Tien Fung Rock and closed to
     3,500 yards.
1045 Sighted friendly plane, PBM, headed Northeast.
1200 Passed between Ling Sui Point and the shoal spot that lies
     6 miles Southeast. Patrolling line between Ling Sui and
     Gaalong.
1730 Set course from 4 miles East of Gaalong to open out from
     coast.
1942 Surfaced 10 miles Southeast of Gaalong Point. Patrolled
     across the southern approaches to Yulinkan during the night.

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CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT

23 March (H) (38)
Noon: Lat. 18-05 N. Long. 110-11 E.

0340 Exchanged recognition signals and calls with the FLOUNDER.
0546 Sighted SEA ROBIN enroute to lifeguard station Southwest of
Yulinkan. Our orders are to patrol North of 17-30. Set
course to patrol Southeast of Yulinkan and at same time be
in position to cover forced landings in that direction.
1015 Sighted two bombers and one Catalina, probably the planes
scheduled to orbit target. Also sighted ran on patrol.
Could not raise on VHF.
1055 On APR heard one plane report 2 CL's anchored 60 miles South
of a code point we could not identify. On area frequency
heard plane tell PIRANHA that 2 CL's were anchored 2 miles
offshore in a Bay. There followed considerable 2 way con-
versation between planes, on both VHF and the area frequen-
cy, in effort to identify the point. We were unable to
raise planes on VHF.
1120 Called planes on area frequency in effort to identify the
location. Plane came back in plain language without authen-
tication and said ships were anchored in Ling Sui Bay.
1126 Went to flank speed to close Ling Sui Bay. Doubt if any
ships will stay in bay after all the plain language conver-
sation between the planes. Swung wide of Gaalong
Point to avoid radar detection planning to enter from Eas-
tern end.
1215 Submerged on sighting unidentified object on horizon, later
identified as sailboat.
1245 Surfaced and resumed 4 engine speed.
1315 Submerged 7½ miles Southeast of Sugar Loaf Point, about 11
or 12 miles from possible position of ships. Running 2/3
speed at 90 feet between half hour looks.
1515 Slowed and started careful, complete search of bay.
1823 Discontinued search. Nothing in the bay. Nearly dark and
visibility getting poor.
1954 Surfaced 7 miles Southeast of Gaalong Point. Picked up SJ
interference of PIRANHA who had been searching same area.
Started surface patrol East of Gaalong Point.
2115 Received orders from FLOUNDER to rendezvous at midnight.
Information of zoomie sightings by day is usually given on
the Baker sched at night. Received no confirming message
regarding the sighting of the CL's.

24 March (H) (39)
Noon: Lat. 18-15 N. Long. 109-52 E.

0010 Held rendezvous with FLOUNDER. We were told to continue
patrol North of 17-30 N. Set course to return to assigned
area.
0624 Submerged off Sugar Loaf Point and commenced submerged

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CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.
*
patrol in Ling Sui Bay. Structure previously observed on
Black Point appears to be a radar station, possibly the
one at 148 megs.
1020 Visibility very poor due to heavy rain. Decided to open,
out and surface.
1327 Surfaced 8 miles East of Gaalong Point. Started surface
patrol. Patrolled Southern approaches to Yulinkan during
the evening.

25 March (H) (40)
Noon: Lat. 18-19 N. Long. 108-33 E.

Patrolling Western and Southwestern approaches to Yulinkan
on the surface.
0215 Radar contact 15,000 yards. Tracking 2 knots on Westerly
course. Closed and identified as sailboat. Not a large
looking sailboat even at 3,000 yards. Feel suspicious
of a small sailboat that can be picked up on radar at
15,000 yards. May be towing a radar decoy kite of some
kind.
0809 Observed skeleton tower on beach near native village. We
are 16 miles offshore and getting a new APR signal at 104
megs, coming in strong.
0842 Submerged on sighting 2 engine bomber, BETTY, 8 miles.
0916 Surfaced and resumed patrol.
1042 Strong surf noises to port and seaward of us. Stopped and
checked them. Positively identified as reef noises in a
spot where chart shows no soundings. Reversed course and
decided to work out to seaward. (Lat. 18-23, Long. 108-29).
Many sailboats in sight during morning.
1246 Few bursts from 20mm gun exploded floating mine. Set course
to patrol Westward of this spot.
1900 Set course to head for East Coast of French Indo China. De-
sire to have a look along the coast in the vicinity of Cape
Vung Chua and Cape Mui Dong. Believe there may be some sea
truck traffic along the coast.

26 March (H) (41)
Noon: Lat. 18-03 N. Long. 106-42 E.

Patrolling on surface along the Coast of French Indo China,
searching for possible sea truck traffic. No contacts.
1434 Set course to head back across Tonkin Gulf and resume pat-
rolling approaches to Yulinkan.
2112 Converted No. 5 F.B.T. to a main ballast tank.
2257 Submerged to flush out No. 5 F.B.T. and surfaced 20 minutes
later.

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CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.
.
27 March (H) (42)
Noon: Lat. 17-41 N. Long. 108-46 E.

0500 Surface patrol Southwest of Yulinkan.
0624 Submerged. 7,400 yards ahead, closed and identified contact
as a large, two masted sailing boat, loaded with about 20
small rowboats and lots of Chinese men and women. The craft
conformed to the large fishing vessels described in the sail-
ing directions, which make long fishing trips lasting several
months.
0807 Surfaced and resumed patrol Eastward.
1124 Sighted periscope, definite, with feather. Opened out at
high speed.
1129 Sighted two fighter planes with bombs or belly tanks coming
in.
1130 Submerged. Decided to remain submerged since the periscope
sighting was within 10 miles of the spot we wanted to patrol
on the surface.
1944 Surfaced and started patrolling Southern and Southeastern
approaches to Yulinkan.

28 March (H) (43)
Noon: Lat. 18-16 N. Long. 109-50 E.

0620 Submerged 9 miles South of Sugar Loaf Point. Patrolling
across mouth of Ling Sui Bay and off Gaalong Point to cover
coastal traffic to or from Yulinkan.
1436 Observed 2 radio masts, small, on East Brother Island at en-
trance to Gaalong Bay.
1947 Surfaced 12 miles Southeast of Gaalong Point.

29 March (H) (44)
Noon: Lat. 17-38 N. Long. 109-12 E.

1110 Patrolling Southern approaches to Yulinkan.
1132 Submerged on sighting 2 engine bomber, BETTY, 8 miles.
1132 Surfaced and resumed patrol.
1415 Received delayed contact report from plane. Seven ship con-
voy Lat. 15-02 N, Long. 109-29 E, course 060°, speed 10 knots.
This position is 160 miles South of us and 90 miles South of
our area boundary. The base course given will carry the con-
voy well outside our area, and almost 200 miles clear of Hai-
nan. Doubt is convoy intends to swing that far out to
land. Set course towards Southern end of our area. We have
orders from FLOUNDER to patrol North of Lat. 17-30. FLOUNDER
and SEA ROBIN are South of us.
1449 Sun lookout sighted single engine plane coming out of sun,
less than 3 miles away. Submerged.

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CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

1450 One plane bomb right over us as we passed 80 feet. This in-
     dicates that the convoy is not swinging wide as the message
     shows. Believe we are fairly close to the projected track.
1539 Surfaced. Sent message to FLOUNDER recommending that we
     form a scouting line. Unable to raise the FLOUNDER. Set
     course East temporarily for the following reasons:
     (1) Believe we are in vicinity of projected track, but con-
     voy still a long way off.
     (2) Desire to remain on the surface to get further informa-
     tion, but do not wish to be detected again camping in
     the same spot.
     (3) Still trying to raise FLOUNDER. Plan to patrol Eastward
     a short distance and double back after dark.
1608 Strong APR at 153 megs, a new signal, obviously airborne.
1614 Submerged on sighting float plane, 10 miles Northwest of us
     on Southerly course.
1636 Surfaced after watching plane well out of sight.
1756 Strong APR signal 153 megs, saturated at 9/10 gain. Put SD
     in standby condition. Plane did not close.
1800 Received delayed aircraft position report on convoy. Plot
     of two positions shows them making good course 020 T.
     Sent message blind to FLOUNDER requesting permission to en-
     ter her section of area, no receipt.
1820 Went to 3 engine speed and set course to intercept convoy
     at predicted 2100 position.
1856 Received message from 71 that zoomies would bomb the
     convoy during the hours 2130 to 0100, while they are well
     offshore in deep water, and for us to remain clear during
     that time. Went to 4 engine speed in hopes of intercep-
     ting before 2030. If not in contact by 2100 plan to re-
     verse course, pull clear, and gain position ahead while
     awaiting completion of aircraft attacks.
2055 Received contact report from FLOUNDER. Six ships, course
     North, speed fifteen. Position 24 miles Southwest of us.
     We had overshot, but would have caught them on our reverse
     leg.
2058 Reversed course, running flank speed on 4 engines to gain
     position ahead. Estimate we are forward of his beam now
     but well out on the flank. Set converging course to close
     range while gaining bearing.
2123 Sight contact at 18,000 yards on friendly plane, bright
     moonlight. SJ had several others on same bearing plus one
     smaller and not visible coming in from astern. APR signals,
     enemy, at 205 and 176 megs, strong.
2124 Submerged as unidentified plane came in to 6,000 yards, with
     no change in bearing. Returned to 44 feet.
2143 Surfaced when nearest plane had opened beyond 20,000 yards.
     Resumed flank speed.
2205 Planes on SJ at 27,000 yards, apparently ours.
2211 Flares from planes bearing 306° T showing that we had lost
     considerable bearing during our dive. Observed tracer fire,

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CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

2230 gun fire, and bomb explosions showing that planes were at
     work. One ship apparently on fire.
     Altered course to converge. Have gained about 20 degrees of
     bearing during the show.
2239 Submerged as unidentified plane, not one of ours, came in
     from ahead closing rapidly from 18,000 to 7,000 yards.
     Plane remained in vicinity about 10 minutes while we ran at
     44 feet.
2255 Surfaced and resumed flank speed on 4 engines. Asked FLOUN-
     DER if she still had contact. Received following reply,
     "Affirmative, port, search damage aircraft". Very sketchy
     information. Altered course to 330° T to converge more, be-
     lieving planes may have diverted ships from their Northerly
     course.
2335 Submerged as unidentified plane came in fast again. Defi-
     nitely not our own as we had them on SJ intermittently at
     27,000 yards. The one that heckles us is smaller and doesn't
     show on radar until about 14,000 yards. Has 176 meg radar.
2349 Surfaced and resumed chase at flank speed.

                       30 March (H) (45)
             Noon: Lat. 18-09 N. Long. 108-22 E

0025 Sent message to FLOUNDER requesting information.
0040 Aircraft on SJ at 22,000 yards. Do not believe this to be
     ours, as first group has departed area and second group has
     not arrived.
0045 Received message from FLOUNDER that she had lost contact
     at 2330 with convoy still on course North. However, plot
     of two positions given by FLOUNDER showed convoy to be mak-
     ing good about 335° T.
0051 Changed course to 300° T to converge convoy. Looks as if
     we are on the outer rim of a large wheel. Plotted base
     courses have changed from 020, to 000, to 335.
0100 Received message from SEA ROBIN showing that she was coming
     in from West to gain contact.
0154 Observed flashes of gunfire at 265° T, showing we have lots
     of bearing to gain.
0211 Observed flashes from gunfire or aircraft bombing. The
     enemies are not conforming to the schedule, which called
     for bombing between hours of 2130 and 0100 only, while the
     ships were out in deep water. Now that the ships are ap-
     proaching shallow and uncharted water the submarines are
     supposed to have their turn.
0242 Exchanged calls and information with FLOUNDER via SJ. Nei-
     ther of us has contact.
0245 Sight contact followed by SJ contact bearing 255° T at
     14,000 yards on three ships. Later picked up three more to
     make a total of six ships, all small. Came to 340° T to gain

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CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

0300 bearing slowly and approaching land. Strong APR
     from Yulinkan, intermittent airborne radar. Ships firing
     guns intermittently in our general direction. Target
     group now tentatively identified as 2 DD's and 4 DE's. No
     other ships. Bright moonlight. Adjusting course as necessary
     to gain bearing and keep range open.
0320 Believe that target group is headed for Yulinkan or Sama
     Bay. We are now directly between them and Sama Bay.
0323 Targets made large zig towards putting us almost dead ahead.
     Shortly afterwards several flashes of gunfire observed.
0325 Shell splash about 500 yards abeam observed by C.O. and
     O.O.D. with naked eye.
     Submerged and returned to 44 feet for radar tracking.
     Headed in on 90 track, went to battle stations and made
     tubes ready. Believe we have been detected but still hope
     to get a shot at one of the DE's, which is showing sharp
     angle on the bow. Sharpened our track as range closed
     rapidly to 5,500 yards. At 5,500 yards the DE zigged away
     and the picture became most confusing. Radar began to pick
     up decoy targets between us and ships making tracking most
     difficult. The target group apparently retired behind this
     window screen. By the time we were able to get decent
     ranges through the false windows the range had opened to
     7,300 yards and target group was tracking on 290° T, leaving
     us out on the limb again.
0400 Unidentified aircraft coming in fast to 4,000 yards. Went
     to periscope depth for 5 minutes. Convoy opening out to
     West, having apparently decided not to go into Sama.
0447 Surfaced and set course to trail ships.
0456 Observed our zoomies at work again bombing the ships. Planes
     reported that ships were heading West to go around Hainan.
     Piens also said they had two submarines in sight, believed
     to be us and the FLOUNDER. Chock showed that they had us
     and SEA ROBIN in sight. Notified FLOUNDER and SEA ROBIN, no
     attack.
0511 Tried to raise planes to see if any were in trouble, but
     they were unable to hear us.
0636 Sighted SEA ROBIN. Closed and exchanged information. SEA
     ROBIN reported having made two long range attacks with nega-
     tive results, on what she described as a Hunter Killer group.
     In retrospect it appears that pickings are really getting
     lean when 3 submarines have to chase a group of 6 DD's and
     DE's all over Tonkin Gulf in an effort to get a shot.
0910 Sighted 2 floating mines. Did not sink them due to our
     proximity to land and possibility that they would explode.
1023 Sighted 2 floating mines. Set course 120° T
     to patrol South of Hainan.
1252 APR signals at 176 megs airborne came in strong, then faded.

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CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

1519 Avoided disturbance in calm water similar to impulse bubble.
1636 Submerged on sighting 6 enemy fighter planes.
1657 Final look before surfacing. Sighted single engine bomber,
     ENFORCES patrolling. Tracked it out of sight.
1715 Surfaced. Received plane report of survivors in raft Southeast
     of Gaalong. Set course to round Yulinkan and search.
2205 Commenced search. Now have the following APR signals:
     176 megs airborne saturated at 7/10 gain; 148 and 190 megs land-
     based saturated at 7/10 gain and 8/10. Airborne soon faded,
     while 148 megs increased to saturation at 6/10 by 2345, then faded.

                                   31 March (H) (46)
                         Noon: Lat. 17-55 N. Long. 109-41 E.

0000 Conducting expanding type search for survivors Southeast of
     Gaalong Point. Have three different positions so far and are
     trying to cover them all. Moon just past full, visibility ex-
     cellent. APR at 193 and 148 megs saturated at 7/10 gain.
     Running trimmed down for fast diving and small silhouette.
     Steering constant helm instead of course clock to give better
     pattern. Shining red blinker gun around horizon at periodic
     intervals and listening on 500 Kc for the "Gibson Girl".
0309 Received message from CTE 71 giving last observed position of
     survivors. Set course for new point.
0421 Arrived at new point and started expanding rectangle type search
     plan. Night is quiet and sea flat. Started sounding blast on
     ship's whistle once every mile. (Note: Later one survivor asked
     if we had blown a whistle during the night. He had heard it
     several times, but the sound was so faint and far distant that he
     believed it to be his imagination. He must have been at least 15
     miles from us at this time).
0855 Sighted aircraft headed toward us. Fired recognition signal
     from mortar. Plane turned and recognized as Liberator. He was
     followed by a second Liberator. Very glad to see them as we
     are about 5 miles off Gaalong Point, expecting to be forced down
     any minute.
0900 First plane searched Southwestward while second plane searched
     our vicinity. About 15 minutes later first plane reported
     sighting two life rafts 5 miles South of Yulinkan, about 15 miles
     from where we are searching.
0916 Went to flank speed on 4 engines, blew all tanks dry, and came
     to course given by plane. Signalled planes we would swing wide
     and approach from South. Asked planes to tell survivors to
     paddle South. Plane dropped notes to life rafts.

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CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

1000 The Yulinkan Harbor Defense is tracking us at 19 to 20
     knots. APR signals at 148 and 193 megs are steady and
     saturated at 4/10 gain. Planes report that one DD and
     one DL in the harbor are getting up steam.
1004 Sighted mirror flashes beneath orbiting plane.
1006 Sighted two yellow life rafts south of Yulinkan. Mirror
     flashes soon became more rapid when it looked as if we
     might pass them by. In reality we were swinging wide to
     bring them in line with Bomb Point so that we could come
     in on danger bearings and ranges.
1012 Came right to 345° T and headed for survivors. During the
     next few minutes things were happening fast. Plane report-
     ed Jap DD underway in harbor and 16,000 yards from us.
     Cannot see him against the harbor background. We sighted
     and reported 4 aircraft, later identified as Mitchells,
     coming in on quarter. We sighted and reported two enemy
     fighters circling for altitude ahead. Beginning to look as
     if Japs may make an issue of this recovery.

1015 The Mitchells joined the Liberators in flying a tight low
     circle around us. This apparently discouraged the DD and
     DE as no more was heard of them.
1016 Reduced speed to make remainder of approach cautiously,
     using danger bearings and radar ranges. Hope this section
     of island is better surveyed than others we have taken cuts
     on.
1017 Jap fighters making long range passes and attacks on bomb-
     ers, trying to get them to break formation. Bombers hold-
     ing formation and turning the Zeros back each time.
1020 Stopped and started swinging towards survivors who are
     paddling towards us from several hundred yards off. We are
     now 11,900 yards from shore by radar.
1021 Jap Zeros made quick dive and strafed the life rafts from
     hight altitude without damage. We trimmed down again as a precau-
     tionary measure. Careful observation shows that the Zeros
     are not carrying bombs.
1023 Observed Zeros starting a dive on us. Cleared bridge of
     all hands except C.O. who ducked behind bridge armor plat-
     ing. First plane made lots of splashes around us but no
     hits. Second plane was better and rattled quite a few off
     our plating. As soon as planes had passed over, started
     maneuvering again to pick up survivors. Lt. Comdr. W. R.
     De Loach and Lieut.(jg) J.W. Quinlan went down on deck to
     help survivors aboard.
1029 Survivors aboard from both rafts. Swung left and started
     opening out to South at flank speed. Our planes damaged
     one Zero, sending him home, but he was replaced by another.
     Zeros are still making long range attacks on bombers and
     trying to break up or loosen the formation without getting
     too close.

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CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

1031 Stationed lookouts and bridge watch again. We are still open
     and liable to strafing; but there is too much going on in the
     sky for one man to keep track of, and there's nothing to keep
     the Japs from sending a fighter bomber to the scene.
1040 Quartermaster reported one of our planes hit, but second ob-
     servation showed that it was a burst of flak between us and
     the plane. Planes asked if we needed coverage any longer and
     we replied negative. Asked planes if they wanted us to stand
     by for strike on harbor and planes replied negative. Gave names
     of survivors to planes.
1042 Submerged. Zeros starting in for second run on us. Submerged,
     notifying planes on the way down. Planes replied they were heading
     for home. Heard machine gun fire rattle around our cheers as we
     made our quickest dive on record. (Passed 100 feet in 50 seconds,
     still logging 14 knots). Returned to periscope depth to watch
     our planes out of sight.
1101 Set course Southeast, running deep at 2/3 speed between 15 minute
     looks. The survivors are: 2nd Lieut. James T. Walker, Pilot;
     2nd Lieut. Richard T. Lee, Co-pilot; and Flight Officer Morris R.
     Perkins, Navigator. All Army of U.S. All are suffering from
     multiple abrasions and lacerations. Administered brandy and
     emergency first aid.
1159 Heard distant explosions, apparently from harbor strike. Commenced
     periscope patrol for observation.
1345 Sighted SEA ROBIN South of us patrolling Westward.
1354 Surfaced and closed SEA ROBIN. Notified her that we had recovered
     survivors. Learned that morning strike was made late and all
     planes returned safely.
1456 APR at 176 megs, airborne, saturated and getting stronger. Ran
     up SJ mast and got contact at 10 miles. Notified SEA ROBIN and
     turned away. SJ picked up plane to port circling between 18,000
     and 20,000 yards. Shortly thereafter lookout sighted 3 fighter planes,
     Zeros, coming in low and fast from opposite side.
1458 Submerged. Final SJ range 2,500 yards. Decided to remain submerged.
1944 Surfaced and sent serial THREE to CTF 71. During night patrolled
     Southeast and East of Yulinkan. Zoomies report 8 DD's and 3
     Marus anchored there.

                                        1 April (H) (I) (47)
                                Noon: Lat. 18-17 N. Lon. 109-56 E.

0350 Unidentified aircraft on SJ closed to 9,600 yards then opened to
     20,000 yards.
1612 Submerged. Patrolling 3 to 5 miles South of Sugar Loaf Point in
     hopes of catching some traffic out of Yulinkan.
1630 Set clocks ahead one hour to "I" (-9) zone time.
2053 Surfaced. Patrolling East of Hainan during the night.

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ENCLOSURE (A)

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CONFIDENTIAL U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

2 April (I) (48)
Noon: Lat. 17-17 N. Long. 109-33 E.

0200 Received orders to depart area for Fremantle, patrolling
four days in Java Sea enroute.
Conducted surface patrol South of Yulinkan during the day.
1049 Closed SEA ROBIN to exchange information by VHF.
1140 Sighted friendly plane, PBM, patrolling.
1950 Departed area.

3-6 April (I) (49-52)

Enroute Java Sea. Sent serial FOUR to CTF 71 and re-
ceived instructions to retain aviators aboard. Sighted
three friendly submarines enroute.
1200 3 April (I) Lat. 13-30 N. Long. 110-36 E.
1200 4 April (I) Lat. 9-10 N. Long. 110-04 E.
1200 5 April (I) Lat. 5-03 N. Long. 107-45 E.
1200 6 April (I) Lat. 0-57 N. Long. 106-27 E.

7 April (I) (53)
Noon: Lat. 2-28 S. Long. 109-02 E.

0430 Entered Karimata Strait.
0719 Submerged. Running submerged today in Karimata Strait
to avoid detection.
2008 Surfaced and set course to clear Strait.

8 April (I) (54)
Noon: Lat. 5-27 S. Long. 108-50 E.

0200 Entered assigned area.
During day patrolled across traffic lane between Man-
dalika and Banka Strait.
1042 Submerged for one hour on sighting land biplane at 4
miles.
1800 Set course for Northern approaches to Batavia. Plan
to run submerged patrol tomorrow near South Watcher
Island to cover traffic into or out of Batavia.
2100 Received message from CTF 71 which places Batavia out
of our area, so set course for Boompjes Island.

9 April (I) (55)
Noon: Lat. 6-26 S. Long. 109-09 E.

0655 Patrolling between Boompjes Island and mainland of Java.
Commenced patrolling Eastward along the 20 fathom curve
in search of coastal traffic. Many sailboats in sight
all day.

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— page 36 —
CONFIDENTIAL - W.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

1440 Sighted what appeared to be a German Schnorkel just in-
     side the horizon. The object looked like a vertical
     section of stove pipe through binoculars, and periodi-
     cally we could see what appeared to be a small mast or
     periscope about in line with it and projecting above.
     Both disappeared abruptly after a few minutes.
1722 Set course to open out from the coast.
     During night patrolled line between Mandalika and In-
     dramayu Point.

                       10 April (I) (56)
             Noon: Lat. 6-17 S. Long. 108-50 E.

1042 Patrolling East of Indramayu Point.
     Submerged on sighting two engine plane at 7 miles head-
     ed towards. Land fix just before diving shows us to be
     6 miles inside the 20 fathom curve and the sea is near-
     ly flat with no white caps.
1150 Surfaced and opened out to deeper water, 27 fathoms.
     During night patrolled Southwest of the Karimoon Java
     Islands to cover traffic route between Banka Strait and
     Mandalika.

                       11 April (I) (57)
             Noon: Lat. 6-17 S. Long. 110-55 E.

     Patrolling on course 330° T Southwest of Karimoon Is-
     lands.
0157 SJ contact 13,000 yards, 215° T. Bearing drawing left.
     Reversed course. Target tracking on 105° T at 10 knots.
     Went to 4 engine speed to gain station ahead.
0220 Target abruptly increased speed to 15 knots and started
     zigging. Range 9,600 yards at this time.
0230 Target increased speed to 19 or 20 knots. At flank speed
     we are getting only 18.2 knots, gaining a degree of bear-
     ing on some zigs and losing a degree on others. Target
     apparently realized this, because after a few zigs he
     steadied up on 100° T for 22 minutes, drawing ahead slow-
     ly. Sent out contact report.
0435 Lost contact at 14,700 yards. During this chase the range
     was closed to 9,000 yards and a small silhouette faintly
     seen. Believe that target was a DE. His actions indica-
     ted that he detected our SJ radar and obtained bearings
     on it, rather than picking us up on his own radar.
0500 We are now about 40 miles out of our area and 20 miles
     from Mandalika. Since our fuel is limited, and we have
     orders to depart area at dusk, decided to conduct sub-
     merged patrol off Mandalika.
0707 Submerged 10 miles offshore and started submerged pat-
     rol off Mandalika Light.

- 27 -                                         ENCLOSURE (A)

— page 37 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

1405 Sighted float plane, JAKE, and land biplane with wheels.
     Both patrolling our vicinity. Float plane remained in
     vicinity for 20 minutes. Hoped they were coverage for
     heavy traffic, but no such luck.
2032 Surfaced and set course East to pass South of Bawean.

                         12 April (I) (58)
          Noon: Lat. 6-03 S. Long. 113-56 E.

0945 Submerged on sighting float plane JAKE, at 7 miles by
     SJ radar. Half hour later same plane observed circling
     about 1,000 yards away. We are East of Bawean.
1115 Surfaced. Started keying SD radar at 2 minute intervals.
1410 SD contact at 5 miles. Garbled report over 7-MC required
     a repeat. Repeat of report also garbled as conning tower
     cut in on 7-MC to report contact at 8,000 yards. By the
     time the O.O.D. got the reports straightened out the contact
     had closed to 4 or 5 thousand yards and was sighted.
1411 Submerged on sighting float plane, 20° elevation, coming
     in fast.
1412 Pattern of about 4 bombs in rapid succession, as we pass-
     ed 80 feet with hard rise on both bow and stern planes
     (due to proximity of 19 fathom sounding on chart). The
     concussion of the bombing caused the automatic by-pass
     valve on the hydraulic system to open, allowing all oil
     in the replenishing tank to run back to the supply tank.
     This caused loss of power on planes and we broached be-
     fore the boat could be brought under control. Damage as
     a whole was minor and we feel that we were indeed lucky.
1944 Surfaced and set course to pass West of Kangean.
2020 SJ contact at 17,000 yards. Identified and exchanged
     calls with the LAMPREY. Looks as if the bombing was
     good treatment for our radar.

                         13 April (I) (59)
          Noon: Lat. 8-46 S. Long. 115-42 E.

0024 Passed West of Kangean Island and set course for Lombok
     Strait.
0647 Submerged in entrance to Lombok Strait.
1944 Surfaced 15 miles South of Lombok and set course for
     Exmouth Gulf via joint zone.

                       14-15 April (I) (60-61)

1200 Lat. 12-41 S. Long. 115-14 E. Enroute Exmouth.
1200 Lat. 17-57 S. Long. 113-50 E. Enroute Exmouth.

                         - 28 -
                                                 ENCLOSURE (A)
                                                 [HANDWRITTEN: 7 1776]

— page 38 —
CONFIDENTIAL -- U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

                                        16 April (I) ('62)
                        Noon: Lat. 22-11 S. Long. 114-07 E.

0940    Moored alongside COUCAL at Exmouth Gulf. Received 13,000
        gal. fuel, increasing our total to 15,000 gal.
        Received mail.
1320    Underway from alongside COUCAL. Made trim dive before dark.

                                        17 April (I) (62)
                        Noon: Lat. 25-55 S. Long. 112-22 E.

                                        18 April (I) (64)
                        Noon: Lat. 31-31 S. Long. 114-51 E.

1341    Arrived at rendezvous point off Rottnest Island.
1507    Entered Fremantle.

                                        (C) WEATHER

        The weather encountered while patrolling the Tonking Gulf
was as per sailing directions with complete overcast during the
first part of March and partly clear skies during the latter part
of the month with moderate seas throughout.

                                (D) TIDAL INFORMATION

        A current of 1 knot, 000° T set was experienced in
Balintang Channel, mouth of Luzon, on 1 March.

        A current of 2 knots, 250° T set was experienced three
miles off Ling Sui Point, Hainan Island on

        Currents in the Tonking Gulf were as per sailing direc-
tions - variable from practically zero up to two knots with set
depending on direction of wind and sea.

                                (E) NAVIGATIONAL AIDS

        Hainan Island - Southeast Coast.

        As per sailing directions. Cross bearing fixes obtained by
periscope using tangents and offshore islands in the vicinity of
Cape Gaalong appear to give accurate positions and cross bearing
fixes obtained in the vicinity of Ling Sui and Sugar Loaf Points
give the same results but cross bearings taken simultaneously on
Cape Gaalong and Ling Sui Point do not give accurate positions
and indicate the coast is not correctly surveyed.

        In passing 3½ miles off Ling Sui Point submerged on a

                                - 29 -        ENCLOSURE (A)

— page 39 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

southwesterly course, reef water noises were heard on the sound
gear to pass down the port side indicating the presence of the
reef shown in position 5½ miles bearing 134° T from Ling Sui Point.

Radar ranges and bearings taken on Tien Fung Rock and
Saddle Island apparently give an accurate position but simul-
taneous ranges and bearings on Tinhosa Island do not check and in-
dicate the latter is about two miles to westward of charted posi-
tion.

(F) SHIP CONTACTS

Time | Lat. | Type(s) | Initial | Est. | How |
No. Date | Long. | | Range | Course | Contacted | Remarks
| | | | Speed | |
1. 1728 H | 18-11 N | (1) DE | 9,000 yds | 214°T | Per. | Could not
   3-27 | 109-49 E | | | 16 kts | | close

2. 0245H | 17-56 N | 2 DD | 14,000 yds | 290°T | Sighted | Could not
   3-30 | 109-18 E | 4 DE | | 15 kts | from | close
| | | | | | bridge |

3. 0157I | 6-05 S | (1) un- | 13,000 yds | 095°T | SJ | Could not
   4-11 | 109-48 E | ident. | | 18 kts | Radar | close

Numerous sailboat and friendly submarine contacts
throughout the patrol.

(G) AIRCRAFT CONTACTS

Enroute from Saipan to the Tonking Gulf numerous friend-
ly and a few enemy planes are sighted. While patrolling the
Tonking Gulf, contacts were made with many friendly and enemy
planes. The majority of enemy planes encountered were radar
equipped. While patrolling the Java Sea three contacts were
made with enemy planes. No planes were contacted South of the
Malay Barrier until reaching the Australian Coast.

No new types were encountered.

The RUFE which bombed the CHUB on 12 April made a high
approach from broad on the starboard bow, flew past as the ship
dove and came up the track from astern dropping several close
light bombs as the ship passed 80 feet.

(H) ATTACK DATA

No data.

- 30 -

ENCLOSURE (A) 7 0776

— page 40 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

(I) MINES
A total of ten floating mines were encountered while pat-
rolling the Tonkin Gulf. All were spherical, horned type mines.
Eight were sunk by rifle and machine gun fire, the other two be-
ing too low in the water to safely shoot at. Some exploded and
some sank when hit.

(J) ANTI-SUBMARINE MEASURES AND EVASION TACTICS.
Anti-submarine measures encountered consisted entirely of
aircraft action. No surface anti-submarine vessels were encoun-
tered. Numerous enemy aircraft patrolling sea areas were con-
tacted, some radar equipped.

On two occasions CHUB was bombed, a single bomb being drop-
ped on the first and a salvo of three to five on the second. All
bombs were light but on the second attack were close enough to
cause minor damage.

(K) MAJOR DEFECTS AND DAMAGES

HULLS
Four casualties developed during the patrol. One occurred
to the bow plane tilting ram which turned approximately 1/4"
clockwise with no apparent harm to the plane's operation. In
turn, this off-centered the ram from the "Ready to Rig" solenoid
and created a constant "Ready to Rig" light regardless of plane
angle.

Attempts to twist the ram back to original position were
not successful. BuShips Plan No. SS313-52200-233495, which shows
this assembly, has not been furnished this vessel, consequently
ship's force cannot positively locate the trouble.

It was noted that this casualty developed after a forced
dive from flank speed on four main engines. Whether the high
stress exerted against the planes at full rise and full dive caus-
ed the tilting shaft to move and thus throw the ram off center is
not known. Repairs will be accomplished during refit.

The concussion, when the ship was bombed on 12 April, caus-
ed the automatic by-pass valve on the hydraulic system to lift and
remain open long enough for all hydraulic oil in the replenishing
tank to run back to the supply tank. Both planes were on hard
rise at the time and the ship broached before the trouble could be
remedied.

Bow buoyancy vent was also unseated by this concussion.
The optics of number two periscope were deranged by the
same bomb blast. Repairs will be made during refit.

- 31 - ENCLOSURE (A)

— page 41 —
CONFIDENTIALL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

MACHINERY:
Four cylinder head studs were broken in three different
units of the main engines. In all cases prior to, and during
this patrol, the broken studs were found to be inboard of the
engine. This trouble seems to be an inherent weakness of this
model engine due either to compression of the head gasket on one
side, or excessive vibration of the engine. One cylinder liner
was renewed when found cracked. Liner seal rings and liner to
cylinder head gaskets were renewed on two units when found to be
leaking, due to loosened liner stud nuts.

One cylinder head and exhaust valves were renewed on the
auxiliary engine, when one exhaust valve was found bent and had
formed a groove across the valve seat. The exhaust valve guide
was broken and the valve stem badly scored.

ORDNANCE:
While firing at a floating mine with Browning .50 cal.
machine gun (serial No. 271513) foul loading of a round damaged
the case causing the round to be crimped in the chamber. Upon
firing the round backfired. Damage incurred: Bent gun casing,
barrel brooch lock, many good burrs throughout the gun working
parts.

During close bombing on April 12, the battery in tor-
pedo Serial No. 57920 (in No. 10 tube at time) was jarred loose
causing damage to hydrogen burner assembly, cracking one cell,
and breaking threaded section of cell top making it impossible
to screw vent caps back on. Damaged cells were jumped out and
torpedo replaced in tube.

(L) RADIO

DEFECTS:
The TBL-12 transmitter temperature control thermostat oc-
casionally failed to cut out the heating circuit when it had
reached the operating temperature. No repairs were attempted,
as it could be remedied by a change in the calibration setting
for the frequencies used.

RECEPTION, TRANSMISSIONS AND REMARKS:
Reception of the SUBPAC Submarine FOX schedule was good
during passage to SWPA. The frequencies most used were 6045 kcs,
9090 kcs, and 13,655 kcs.

- 32 - ENCLOSURE (A)
[HANDWRITTEN: 7 1776]

— page 42 —
CONFCONFIDENTIAL
- U.S.S. GHUB (SS 329) FIRST WAR PATROL REPORT.

Reception of VIXO (Baker Schedules) was good throughout
the patrol with the exception of the 4370 kc band, which could not
be heard until we reached a position about 04-00 N after which it
was received very well. The frequencies most used were 9250 kcs,
and 12,360 kcs with occasional use of 16,150 kcs and 4370 kcs.

The lifegaurd frequency of 4475 kcs was guarded along with
the VHF whenever friendly planes were known to be in the area.
Those were both used 31 March 1945 while rescuing survivors with
a great deal of succoss. But as a whole, VHF reception was very
unsatisfactory, although our transmissions seemed to be good. On
31 March, while rendezvous ing with SEA ROBIN, the reception was
very poor and faded completely out when the range between the two
submarines was greater than 2,000 yards.

The WOPFAC frequencies were guarded while patrolling the
Tonking Gulf with excellent results. This frequency was also
used by planes and fairly good voice transmissions were intercep-
ted. CW transmissions were used exclusively between GHUB and the
other submarines in the area.

The RECCO frequencies of 7615 kcs and 42

— page 43 —
CONFIDENTIAL
                                                                                                                            [STAMP: 7 0776]

CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

     Communication with other submarines by SJ was used often
during this patrol. Once while communicating with the U.S.S.
SEA ROBIN, the ROBIN'S code was received and copied by the radio-
man on the 500 kc distress frequency. The reception was like in-
terference, buzzing in the receiver but the characters were
clearly readable. This may indicate that interception of SJ
transmissions by the enemy is possible.

     During an attack by a squadron of Mariners on an enemy con-
voy several large ragged unusual echoes were observed which had the
appearance shown below. They were at first thought to be "window"
which was to have been used by the Mariners but later taken to be
rain clouds as they persisted for two hours. Most unlike the nor-
mal cloud return.

          A-SCOPE                                        PPI
          2000
                                                         K 60°

     Evidence was obtained while tracking the same convoy that
the enemy was using some form of decoy target. Several strong
saturated signals were obtained between the Nips and ourselves.
Although reflecting an echo that we might expect from a medium
ship at 5,000 yards they tracked at zero speed and when a couple
of them closed to 2,000 yards nothing was seen in the clear,
bright moonlight.

MATERIAL AND MAINTENANCE:

     The overall material condition of the SJ during this patrol
was good with a total of 8-1/2 hours lost operation. The OBU
echo box was very useful in locating failing tubes before they
caused trouble.

     An unfortunate situation exists in this installation which
has the transmitter located aft in the conning tower behind the SD
mast. The relatively simple job of changing a tube in the trans-
mitter now takes an hour and a half instead of a few minutes. It
is hoped to remedy this condition during the coming refit.

     Normal tube replacements were made and the following equip-
ment failures experienced:
     Low Ringtime - Indications of faulty T-R Tube. Replaced.
     Jittery Transmitter Pulse - Defective 5U4G in Reg. Rect. Replaced.
     Double Transmitter Pulse - Grounding of output lead on 726B Oscil-
          lator. Wrapped with scotch tape. Insulated sleeve missing.
     No Sweep - Shorted Regulated Rectifier. Replaced grounded conden-
          sor, C526, in Range Unit.
     Ground and Fire in Main Control Unit - Grounded terminal strip.
          Rewired.

                                  - 34 -                 ENCLOSURE (A)        [STAMP: 7 0776]

— page 45 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.
(P) HEALTH, FOOD, AND HABITABILITY

The health of the crew as a whole was excellent. There
were no communicable diseases on board during the run.

The food was of good quality, ample in quantity, and
well prepared.

The habitability of the boat was greatly improved by the
installation of a booster blower in the control room at Pearl
Harbor, and with the exception of the control room the boat was
cool and comfortable. It is expected to modify the control room
ventilation during refit to take care of excess heat.

(Q) PERSONNEL

(a) First patrol.
(b) Seventy-eight men on board.
(c) Thirty-six men qualified at start of patrol.
(d) Seventy-two men qualified at end of patrol.
(e) Forty-one unqualified men making their first patrol.

The performance of both officers and men was very satis-
factory throughout the patrol. The performance of the lookouts
as a whole was very gratifying. It is particularly desired to
mention the keen alertness of BABB, D.B., F1c, as a lookout
whose work was steady throughout the patrol and who saved the
ship from considerable embarrassment by sighting the zords dur-
ing the rescue operation.

(R) MILES STEAMED - FUEL USED

Pearl Harbor to Area | 5886 miles | 75,621 gallons
In Area | 6603 miles | 59,250 gallons
Area to Fremantle | 3541 miles | 40,045 gallons

(S) DURATION

Days enroute Area | 19
Days in Area | 33
Days enroute Base | 12
Days submerged | 12

(T) FACTORS OF ENDURANCE REMAINING

Torpedoes | Fuel | Provisions | Personnel
25 | 4,000 gallons | 12 days | 12 days

Limiting factor this patrol: Fuel. Patrol terminated by
despatch orders.
[HANDWRITTEN: 7 1776]
- 36 - ENCLOSURE (A)

— page 46 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.
(U) COMMUNICATIONS, RADAR, AND SONAR COUNTERMEASURES.

Communication Countermeasures:

1. No enemy signals intercepted.

2. The usual expected jamming and interference with none of
it being too effective. NKN seems to interfere nearly every day
on the 9250 kc BAKER band. At 2100 GCT on 20 March 1945, while
off Southern Hainan Island, a station with call MTS 9 was inter-
fering on the 9250 kc band. Throughout the patrol very little dif-
ficulty was experienced in being able to copy the schedules.

Radar Countermeasures:

1. The APR search receiver and SPA pulse analyser were used
continuously while on the surface. They were of great value in
locating enemy shore based radar and in giving an early warning of
approaching radar equipped planes. After once having obtained a
calibration of radar ranges vs saturated height and gain on APR
(full gain SPA - vary APR) the search receiver gave a fair esti-
mate of range to the known signal (See APR contacts) although the
SD was normally used to check the range of the closing plane.

In one case, when forced down several times by fast
approaching plane, no signal was received on the APR though the
plane obviously had radar (see narrative). It is, however, pos-
sible that the enemy was homing on the SJ signal. The present APR
tuning unit, TN-3, 1000 Mc, is the highest frequency that the CHUB
has. It is hoped that the TN-4 may be obtained during the coming
refit.

Two definite cases of keyed enemy radar signals were ob-
tained (see contacts). The keyed signals were clearly readable and
probably were being used for recognition.

The APR receiver was used as a VHF receiver when that unit
became defective. It was found that greater ranges of reception
were possible.

It would be very helpful if the APR units were intercon-
nected so that one unit could be "standing guard" on a known fre-
quency while the others were sweeping their bands. This will be
attempted during refit.

Although this equipment was in continual operation during
most of the patrol the material troubles were few, being one
shorted condenser and several tube replacements.

2. No jamming encountered.

- 37 - ENCLOSURE (A)

— page 47 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

3. The possible decoy balloons or false targets used by an
enemy convoy during a night approach has been described under SJ
Radar.

4. APR Contacts:

| | (a) | (b) | (c) | (d)
| Frequency | 150 Mc | 171-178 Mc | 150 Mc | 190-193 Mc
| PRF | 1000 p/s | 150-500 p/s | 500 p/s | 500-1000 p/s
| PW | 7-10 us | 3-7 us | 5-7 us | 6-12 us
| Latitude | 20-16 N | 17-52 N | 18-38 N | 18-38 N
| Longitude | 122-06 E | 111-03 E | 110-38 E | 110-38 E
| Date | 2 March | 4 March | 14 March | 14 March
| Pulse shape | [pulse shape drawing] | [pulse shape drawing] | [pulse shape drawing] | [pulse shape drawing]

| | (e) | (f) | (g) | (h)
| Frequency | 147 Mc | 176 Mc | 153 Mc | 220 Mc
| PRF | 500 p/s | 200 p/s | 800 p/s | 300 p/s
| PW | 5-6 us | 7-10 us | 8 us | 7 us
| Latitude | 18-13 N | 16-12 E | 17-29 N | 18-24 N
| Longitude | 110-02 E | 108-30 N | 109-48 E | 109-38 E
| Date | 20 March | 18 March | 24 March | 31 March
| Pulse shape | [pulse shape drawing] | [pulse shape drawing] | [pulse shape drawing] | [pulse shape drawing]

(a) This radar was received near BATAN ISLAND in the
LUZON STRAIT. It has all the characteristics of Jap airborne
gear and was received several times during the patrol.

(b) This is a probable airborne equipment having the
characteristic irregularity and unstable appearance. It was
received several times around the above area and the charac-
teristics varied as shown.

(c) Probable aircraft.

(d) Confidential reports indicate a shore station of
193 Mc in this area (South Hainan Island) on the point of
Cape Saloman. During the time of patrol in this area fre-
quencies of 193 and 190 Mc were received with varying pulse
rates and pulse widths. Within the same hour signals were re-
ceived on both frequencies with pulse widths of 8 and 11 us
respectively. It is possible that there are two radars at this
point but each had such a wide variance of PRF and pulse widths
that it is believed that it is the same station, one which has
unstable operation. This radar seemed to be sweeping the bay
area at three to five sweeps per minute.

- 38 - ENCLOSURE (A)
[HANDWRITTEN: 0776]

— page 48 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.

(d) The strength of the received signal varied from being bare-
    ly perceptible at a great range to saturation at 0.4 gain
    within six miles of the Cape during rescue operations.

(e) This radar was definitely shore based and the strength
    of the received signals were similar to those of the 193 Mc. It
    is definitely located in the Ling Sui Bay area and, during a close
    inshore submerged patrol, it is believed that the station was
    sighted on a hilltop of Black Point. The equipment viewed through
    the periscope had the appearance shown in the sketch below:

Several times the 147 Mc signal had the appearance shown
below:

It is believed that this was due to trouble or double pul-
sing of the enemy transmitter because of the following:
    (1) Both main echo and secondary increased and decreased
        in size together, although it was apparently sweeping.
    (2) The secondary echo always remained fixed with respect
        to the first one; in perfect synchronism.
    (3) Both were exactly the same frequency.

(f) This radar was detected several times during the patrol
    and was definitely established as airborne. The CHUB was forced
    down several times by an aircraft with increasing APR signals and
    decreasing SJ ranges. It was evidently a large patrol type plane
    as it was tracked in on the SJ from 20,000 yards and echoes were
    received as far as 40,000 yards. The following APR calibration
    was obtained with SJ and SD ranges vs saturated APR signal:

APR GAIN SET | RANGE
---|---
0.9 | 24,000 yards
0.7 | 20,000 yards
0.5 | 9,000 yards

(g) Probable aircraft.

(h) Believed friendly aircraft.

No Sonar Countermeasures Encountered.

- 39 -                     ENCLOSURE (A)

— page 49 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) FIRST WAR PATROL REPORT.
(V) REMARKS

Naturally all hands are keenly disappointed to have gone
through such a long patrol without firing a torpedo. However
our spirit is not dampened. We feel that we tried hard this
time; but we'll try even harder next patrol.

- 40 - ENCLOSURE (A) [STAMP: 7 0776]

— page 50 —
C5-301/A16-3
Serial (08)

CONFIDENTIAL

FIRST ENDORSEMENT to
U.S.S. CHUB (SS329)
First War Patrol Report.

From:
To :
Via :
Subject:

SUBMARINE SQUADRON THIRTY

Care of Fleet Post Office,
San Francisco, California.
20 April 1945.

Commander Submarine Squadron THIRTY.
The Commander-in-Chief, U.S. Fleet.
(1) The Commander Submarines, SEVENTH Fleet.
(2) The Commander-in-Chief, SEVENTH Fleet.

U.S.S. CHUB (SS329) - Report of FIRST War Patrol.

1. The first patrol of the CHUB, conducted in the South China and
Java Sea areas was of 64 days duration, 33 of which were spent in the assigned
areas. From 6 to 18 March, the CHUB was a member of a coordinated attack group
of which the Commanding Officer of BRILL was O.T.C. From 19 March to 3 April,
the CHUB, S.S. ROBIN and FLOUNDER formed a coordinated attack group of which the
Commanding Officer of FLOUNDER was O.T.C.

2. Few contacts worthy of torpedo fire were made. First contact,
on 20 March, was on a DE which could not be closed. Second contact on 30 March
consisted of two DD's (UN) and 4 DE's (UN). Torpedo attack on this group, already
under air attack, was frustrated due to detection and gunfire by the targets and
very effective use of "window". Another contact, apparently on a DE, was made
in the Java Sea on 11 April but it could not be closed for attack. The CHUB was
apparently detected by Radar. Aircraft and periscope sightings were numerous.
Of mines sighted, eight were sunk by gun fire. The CHUB was closely bombed in
the Java Sea on 12 April but fortunately only minor damage resulted.

3. The highlight of the patrol was the stirring rescue of three Army
aviators south of HAINAN on 31 March. This rescue was accomplished close to shore
in face of strafing by two Zeros and a report from the aircover that a Jap DD in
the harbor only six miles away was getting underway. Two Liberators and four
Mitchells provided a very effective low altitude tight defensive screen during
this operation. This rescue is outstanding, not only in the courage and deter-
mination of the Commanding Officer, but also in the fine flight discipline and
courage of the air cover in continuing their tight defensive circle over the
submarine for about 25 minutes, up until the submarine dived after rescue. This
is an example of air cooperation of the highest order.

4. The CHUB presented a shipshape appearance upon return from patrol
and morale is high. Material condition is good and the refit will be accomplished
in the normal time.

5. The Squadron Commander welcomes the CHUB to the Southwest Pacific
and congratulates the Commanding Officer, officers and crew upon a well conducted
and aggressive patrol. The determination and courage of the personnel in effec-
ting the splendid rescue of the aviators in the face of continued strafing are
worthy of high commendation.

[SIGNATURE: K. G. HENSEL.]
K. G. HENSEL.

— page 51 —
FE24-71/A16-3
Serial 0864
C-O-N-F-I-D-E-N-T-I-A-L
SECOND ENDORSEMENT to:
USS CHUB Conf. Ltr.
A16-3, Serial 09, dated
18 April 1945. Report
of First War Patrol.

From:
To:
Via:

Subject:

1.
of Commander C. D. RHYMES, Jr., U.S.N., was conducted in the SOUTH
CHINA SEA in the area between TOURANE and HAINAN as a member of a
Coordinated Group consisting of BRILL (OTC) and CHUB from 6 to 18
March; and as a member of a Coordinated Group consisting of FLOUNDER
(OTC), ROBIN and CHUB from 19 March to 3 April. From 8 to 13
April, CHUB patrolled in the JAVA SEA.

2.
contact on 30 March is of especial interest in view of the enemy's
effective use of "window". Four periscopes and numerous mines were
sighted during the patrol.

3.
cue of aviators on 31 March are fully concurred in.

4.
section, are well written and indicative of careful preparation
and much thought.

5.
authorized for this patrol.

6.
Officer, Officers and Crew of the CHUB upon their completion of
this arduous and aggressive patrol, and especially upon their
heroic rescue of downed aviators in the face of determined enemy
opposition on 31 March.

UNITED STATES NAVY
25 May 1945.
14/hr

The Commander Submarines SEVENTH FLEET.
The Commander in Chief, UNITED STATES FLEET.
The Commander SEVENTH FLEET.

U.S.S. CHUB (SS329) - Report of First War Patrol,
Comments on.

The First War Patrol of the CHUB, under the command

No torpedoes were fired on this patrol. The enemy

The commendatory comments upon CHUB's exemplary res-

The patrol report, and particularly the remarks

The award of the Submarine Combat Insignia is

The Force Commander congratulates the Commanding

[SIGNATURE: James Fife]
JAMES FIFE
ORIGINAL COPY
- i -
7 0776

— page 52 —
UNITED STATES NAVY
FE24-71/A16-3
Serial 0854
CONFIDENTIAL
C-O-N-F-I-D-E-N-T-I-A-L 25 May 1945.
14/hr

SECOND ENDORSEMENT to:
USS CHUB (SS329) Conf. Ltr.
A16-3, Serial 09, dated
18 April, 1945. Report
of First War Patrol.

Subject: U.S.S. CHUB (SS329) - Report of First War Patrol,
Comments on.

— page 53 —
UNITED STATES FLEET
COMMANDER SEVENTH FLEET
[STAMP: REG. NO F-1340]
[STAMP: REC. SHEET NO 35]
[STAMP: 24 JUN 1945]

A16-3(8)(F-3-4/ekb)
Serial: [HANDWRITTEN: 04175]

CONFIDENTIAL

THIRD ENDORSEMENT on:
CO USS CHUB conf. ltr.,
serial 09, dated 18
April 1945.

From: Commander Seventh Fleet.
To : Commander in Chief, United States Fleet.

Subject: U.S.S. CHUB (SS329) - Report of First War
Patrol.

1. Forwarded.

2. The Commander Seventh Fleet congratulates the
CHUB on the determined manner in which the rescue of three
aviators was effected.

[SIGNATURE: Wm. D. Caucho]
THOS. S. COMBS
Chief of Staff

Copy to:
ComSubs7thFlt
ComSubRon 30
CO, USS CHUB (SS 329)

— page 54 —
SS329/A16-3
Serial ( 065 )

DECLASSIFIED-A-L

U.S.S. CHUB (SS 329)

c/o Fleet Post Office,
San Francisco, Calif.,
21 June 1945.

From: The Commanding Officer, U.S.S. CHUB (SS 329).
To : The Commander-in-Chief, UNITED STATES FLEET.
Via : The Commander Submarine Division THREE HUNDRED ONE.
      The Commander Submarine Squadron THIRTY.
      The Commander Submarines, SEVENTH FLEET.
      The Commander-in-Chief, SEVENTH FLEET.

Subject: U.S.S. CHUB - Report of War Patrol Number Two.

Enclosures: (A) Subject Report.
            (B) Track Chart (Seventh Fleet only).

      1. Enclosure (A), covering the SECOND war patrol of this vessel
conducted in the waters of Java Sea during the period of 19 May 1945 to
18 June 1945, is forwarded herewith.

                                                  [SIGNATURE: C. D. RHYMES, Jr.]

DECLASSIFIED-ART. 0445, OPNAVINST 5510.1C
BY [HANDWRITTEN: OP089C] DATE [HANDWRITTEN: 5/25/72]

[STAMP: DECLASSIFIED]

— page 55 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

(A) PROLOGUE
Arrived Fremantle, West Australia, 18 April 1945 from First
War Patrol. Normal refit conducted by Relief Crew of Submarine
Division 301, while officers and crew spent a most enjoyable rest
period of 14 days. Renewed No. 2 periscope and installed ST radar
in No. 1 position. Regular officers and crew returned on 4 May
1945. We were well pleased with the refit job and especially
pleased with the cleanliness of the ship throughout. The following
officers were detached: Lieutenant-Commander William R. DE LOACH,
and Lieutenant-Commander Robert W. MC INTOSH, USN. The following officers
reported aboard for duty: Lieut(jg). Robert T. REHTMEYER, USNR, and
Ensign Arnett B. TAYLOR, USN. Conducted 8 days training with Captain
J. L. HULL, USN, and Captain F.H. ROSS, USN. Ready for sea 14 May
1945.

(B) NARRATIVE

File No. | Officers | Rank | Total Patrols
| | | Including This One
74884 | RYVES, Cassius D., Jr. | Commander, USN | Eight
97004 | CARROLL, Robert M. | Lieutenant, USNR | Nine
187345 | REHTMEYER, Robert T. | Lieut(jg), USNR | One
223881 | GORDRAY, Austin E. | Lieut(jg), USNR | Two
253682 | QUINLAN, John W. | Lieut(jg), USNR | Four
204204 | WATTS, Evan E. | Lieut(jg), USN | Thirteen
199373 | SCHLICHT, John M. | Lieut(jg), USN | Two
258456 | GLANTZ, Everett B. | Lieut(jg), USNR | One
390057 | TAYLOR, Arnett B. | Ensign, USN | One

| | | Total Patrols
| | | Including This One
Ser. No. | Chief Petty Officers | Rate |
228 27 74 | ADAMS, Edward A. | CTM | Four
201 32 34 | BROOKS, Charles | GMOMM | Seven
616 77 75 | EMMONS, Charles R. | GMOMM | Two
243 60 70 | HILLMAN, Paul | CEM | Ten
381 17 59 | HERFELD, Marvin E. | CEM | Eleven
337 03 22 | SCHMIDT, Fred H. | GMOMM | Seven
407 23 23 | WEISH, Robert A. | CRM | Eight

14 May (1)
ALL TIMES ITEM (-9)

1400 : Departed Fremantle, West Australia, independently, with fond
memories of the place and sincere hopes of profiting here
again. Too much cannot be said for the morale building effect
of a refit and rest period in West Australia. Conducted gun
firing on towed target during afternoon. Conducted end around

- 1 - ENCLOSURE (A)

— page 56 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.
runs and attacks on CORPUS CHRISTIE during afternoon and
evening.

                                15 May to 18 May (2-5)

Enroute Lombok Strait. Conducted training dives, drills,
school of boat, and exercised crew at battle stations.
Passed USS BAYA enroute. Manufactured and installed new
hinge pin in bow buoyancy vent operating gear.
1200          15 May          Lat. 29-25 S          Long. 112-58 E.
1200          16 May          Lat. 24-42 S          Long. 112-33 E.
1200          17 May          Lat. 18-45 S          Long. 113-35 E.
1200          18 May          Lat. 13-09 S          Long. 115-07 E.

                                19 May (6)
                      Noon: Lat. 08-51 S          Long. 115-46 E.

0702          Submerged in Southern entrance to Lombok Strait. Patrolled
              Southern entrance during the day, just holding our own
              against the current.
1957          Surfaced. Stood South for 45 minutes charging batteries
              then reversed course.
2117          Commenced transit of Lombok Strait on 3 engines. No con-
              tacts in the strait.

                                20 May (7)
                      Noon: Lat. 06-16 S          Long. 116-09 E.

0030          Completed transit of Lombok and set course to pass West
              of Kangean Island.
¶103          Went to 4 engine speed and altered course to pass East of
              Kangean.
0210          Exchanged calls with BECUNA.
0445          Sent serial one to Comsubs 7th Fleet.
0622          Rounded Sekala Island.
0715          Submerged on sighting single plane (ZEKE) at about
              10 miles flying low.
0750          Surfaced and sighted same plane again.
0751          Submerged to avoid detection.
0814          Surfaced and went to 4 engine speed.
1203          Submerged on SD contact and sight contact at 15 miles on
              float plane, circling (RUFE).
1245          JT sound reports possible screws bearing 238° T. Nothing
              visible with 15 feet of periscope exposed.
1300          Exposed 15 feet of periscope and sighted mast and
              235° T. Commenced approach. Ships consist of a small
              freighter type escort and a small engines aft freighter,
              "Sugar Charlie" type. Started approach on escort because
              his higher superstructure made him appear larger.

                                - 2 -                               ENCLOSURE (A)

— page 57 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

Near firing point a zig away gave us a 3,000 yard shot at
the escort and placed us almost on track of SC. At this
point considered shifting targets but did not for the fol-
lowing reasons:
(1) Chance of getting both targets by torpedo fire.
(2) Escort has gun mounted forward (about 37mm).
(3) If we got the escort with torpedoes, we can get the
other ship with gun fire.
(4) Setup checking perfectly on escort.
1339:30 Fired three Mk 18-1 torpedoes at escort. Depth set 4 feet,
track 105 S, torpedo run 3,200 yards. Missed.
Following the above clumsy attack, stood clear to the South
and conducted special mission, as assigned by Comsub
Seventh Fleet. See Supplement "A" to this report.

21 May (8)
Noon: Lat. 05-49 S Long. 115-13 E.

0104 Patrolling North of Kangean Island enroute assigned area.
SJ contact 18,000 yards 180° T, bearing drawing left.
Target on base course 085° T at varying speeds. While
we are keeping the range open to 12,500 - 14,000
yards for the following reasons:
(1) Target is headed towards vicinity of our last attack
and is probably an escort vessel.
(2) On our last patrol we were detected twice while
when range was allowed to close to 10,000.
(3) Target changing speed about every 20 minutes (15,11,8,
17,13 kts).
(4) Track and antics of target indicates that he knows we
have been around and is on the alert for us.

We are taking quick SJ setups at 2 minute intervals. Between
looks we sweep with the PPI by keying; but cut it off as it
crosses the target's sector each time.

0231 Submerged 13,000 yards ahead of target, 1,000 yards off the
track. Tracked target in from 10,000 yards using ST ranges
and JT sound bearings. (The ST-JT is an excellent combina-
tion for tracking a single target submerged at night).
At 4,000 yards can barely make out target through periscope.
Target has zero angle on bow but is almost due for a zig
away. Keeping our bow on target to reduce his chances of
contact. He is echo ranging on 17.4 kc.

0247 Zig away as expected. Target is a blob in periscope.
General contour of a DE or AM. Moon has just set.
Sound bearings by JT considered more accurate than peris-
cope, so continued to use them with ST ranges.
0248:30 Fired 5 torpedoes, 700 foot spread, depth set 4 and 5 feet

- 3 - ENCLOSURE (A)

— page 58 —
CONFIDENTIAL - S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

0250 staggered, track 100 port, torpedo run 2,900.
0251.42 Went to deep submergence, 200 feet.
One torpedo explosion (timed hit). By this time "Cautious
Cassius" was conning the CHUB at 200 feet. Sound reports
that screws and echo ranging have stopped. Started to
return to periscope depth.
0255.45 Heavy explosion that sounded as if block buster had been
dropped on us. Immediate reaction of all hands was that
we had nicked the target with one torpedo, and that he
was still able to drop depth charges. Careful check by
sound reveals nothing. Decided that target had exploded
instead of depth charging us.
0310 Started easing up to periscope depth.
0342 Careful sweeps on ST and SJ show all clear.
0344 Surfaced and closed scene of attack.
0405 Passed through large strong smelling oil slick. Circled
area but could locate no survivors in the dark. Consider
target sunk. As a crippled target could not have gotten
beyond SJ range without making screw noises that could be
heard by our JT.
0413 Set course for our assigned area.
In retrospect the C.O. feels a little sheepish about not
staying at periscope depth after firing at this unescorted
DE or AM; but gives the following reasons:
(1) Target recognized to be an escort vessel and known to
be alert; as we attacked him within 4 miles of the point
of our previous afternoon's attack.
(2) Lack of complete confidence in sound shots.
(3) Inability to tell by eye what the target was doing.
(4) A natural pessimism born of experience on several boats
of having heard many torpedoes leave the tube; but very
few explosions, except prematures.
(5) A great deal of respect for this type of target.
0700 Sent serial two to Comsubs 7th Fleet.
0708 Submerged to get some rest.
1620 Surfaced. Set course for area at 3 engine speed.

22 May (9)
Noon: Lat. 04-46 S Long. 113-13 E.

0014 Entered assigned area. During day patrolled near Southern
area boundary on line between Sebangan Bay and Soerabaja,
at 2 engine speed.
2150 Exchanged calls with CROAKER via SJ.

23 May (10)
Noon: Lat. 04-39 S Long. 111-33 E.

Patrolling line Southwest of Sebangan Bay.

- 4 - ENCLOSURE (A)

— page 59 —
CONFIDENTIAL
- U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

0345 Sounding 13 fathoms. Set course to open out to deeper
      water before daylight. Two engine speed.
0957 Submerged to work on SJ radar.
1442 Surfaced. Radar back in commission.
1520 Blew gasket in hydraulic accumulator.
1529 Submerged to renew gasket, rather than chance a forced
      dive without hydraulic power.
1637 Surfaced. During night patrolled Southwest and South of
      Sebangan Bay at 3 engine speed.

                        24 May (11)
Noon: Lat. 04-46 S Long. 112-57 E.

0851 Submerged on line North of Bawean Island.
1934 Surfaced. Received report from BOARFISH of having sighted
      3 small ferries and 1 patrol boat during afternoon.
2245 SJ radar out of commission.
2300 Headed Southeast at 3 knots while BOARFISH came close aboard.
      Passed instructions to BOARFISH via line throwing gun for
      coordinated patrol of this area.

                        25 May (12)
Noon: Lat. 04-42 S Long. 112-41 E.

0012 Set course to overtake ferries and patrol boat; although
      BOARFISH advised that entire outfit didn't aggregate 600
      tons and that she had made no attack on them.
0043 Changed mind and reversed course for following reasons:
      (1) Plot shows we will have to go 60 miles inside the
          BLUEBACK and CROAKER area to overtake.
      (2) Radar officer states that many hours will be required
          to repair SJ - if it can be repaired.
      Decided not to enter another boat's area with no SJ.
0721 Submerged on line North of Bawean Island. BOARFISH is
      Southeast of us submerged on line between Bawean and Cape
      Malajoer.
      Worked on SJ radar all day. A 1700 volt transformer is
      burned out in the "A" scope unit and there is no spare on
      the allowance. The radar gang has hooked up a "jury-rig"
      consisting of a 2000 volt transformer found in SD spares
      and an assortment of resistors taken from the QC and QB
      sound equipment. Everyone has his fingers crossed and is
      wondering, when we surfaced, whether the SJ will send out
      a "ping" or "pulse".
1934 Surfaced. The SJ sends out pulses.

                        26 May (13)
Noon: Lat. 03-53 S Long. 111-16 E.

- 5 - ENCLOSURE (A)

— page 60 —
CONFIDENTIAL - U.S. CHUB (SS 329) SECOND WAR PATR. REPORT.

0155 Patrolling close inshore off Cape Poeting to cover pos-
     sible traffic along South Coast of Borneo, to and from
     Banka Strait.
     False alarm on APR, 125 megs. Fathometer reading 4
     fathoms, started opening out from coast. Later found
     that APR had sub-harmonic of ST radar which was being
     tested at this time.
     During day patrolled on surface Southwest of Cape Poeting.
     ST radar out for four hours during the day.
1945 Set course to close coast and investigate the vicinity of
     Sangora Bank for possible anchored ships.
2312 Crossed inside the 10 fathom curve.

                                27 May (14)
               Noon: Lat. 03-42 S Long. 11-38 E.

0123 Patrolling South of Koemai Bay in 8 fathoms of water,
     making radar search for possible anchored shipping.
0720 Crossed outside 10 fathom curve and patrolled Southwest
     of Cape Poeting in 18 fathoms of water.
1829 Submerged. Moved North 4½ miles and conducted submerged
     patrol off Cape Poeting in 16 fathoms of water.
     Surfaced and notified BLENNY of our position.

                                28 May (15)
               Noon: Lat. 04-17 S Long. 112-41 E.

0328 Made rendezvous with BLENNY and communicated by VHF. Ex-
     changed ideas and plans for working this shallow water
     area. Plans are as follows: Tonight both boats will
     make a search for anchored targets. BLENNY will work up
     towards mouth of Barito River and CHUB will work up towards
     Sebangan Bay. Both spots have a narrow tongue of fairly
     decent water 11 to 15 fathoms leading up to within a few
     miles of the objectives. If either boat stirs up a hornet's
     nest, she will pull clear and advise the other boat.
0930 Submerged in 19 fathoms of water heading up towards Sobangan
     Bay, 75 miles away.
1947 Surfaced in 13 fathoms of water; continued working up to-
     wards Sebangan Bay and Cape Malatajoer. The bottom is very
     uneven in this tongue, varying from 11 to 15 fathoms.
2200 Crossed an 18 fathoms pocket not shown on the chart.
2236 Came to an apparent uncharted bank where fathometer read-
     ings dropped rapidly from 9 to 6 to 4½ fathoms. (We are
     trimmed down to 21 feet, giving depth of water as 8 fath-
     oms where chart shows 12 to 15).
2310 Circling to the left while Navigator finishes another set
     of moonlight stars. Fix shows us within one mile of DR
     position and in charted depth of 15 fathoms.

                                - 6 -                                ENCLOSURE (A)

— page 61 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

2320 Became suspicious of fathometer. Stopped and broke out
     the lead line. The lead fell off on the first cast. (The
     line was rotten from being stowed topside).
2353 Made stationary dive to check fathometer sounding of 4
     fathoms. Settled on the bottom at 45 feet, showing that
     fathometer is accurate.

                               29 May (16)
               Noon: Lat. 04-30 S Long. 111-31 E.

0003 Surfaced. Made 4 mile dog leg off to the left at slow
     speed in hopes of locating a deep channel. Fathometer
     readings 4 or 4½ fathoms all the way.
0114 Abandoned idea of reaching bay and set course to open out
     for following reasons:
     (1) Navigation has been accurate. Checked by 3 fixes.
     (2) In no place has fathometer checked with charted sound-
         ings.
     (3) Believe Malatajoer Bank, which extends 40 miles to
         seaward has expanded during the past 38 years.
     (4) Full moon with overcast sky. Time not best for this
         type of reconnaissance.
0127 Fathometer readings increased to 6 fathoms, went to stand-
     ard speed. Patrolled well off shore during the day.
1800 Set course to close Cape Poeting.

                               30 May (17)
               Noon: Lat. 04-34 S Long. 112-56 E.

0122 Crossed inside 10 fathom curve to make radar search for pos-
     sible anchored targets. Trimmed down.
0305 Crossed outside 10 fathom curve and set course for rendez-
     vous with BLENNY at 3 engine speed.
1100 Received word from BLENNY that she was closing small AK for
     attack, and cancelling rendezvous.
1107 Altered course to the South. (See Supplement "A").
2010 Lost high voltage on SJ radar. Shortly thereafter detected
     strong SJ interference Southwest of us, closing, believed
     to be GROAKER. Then SJ failed completely.
2025 Went to full speed on 3 engines, course North, and notified
     BLENNY and GROAKER that our SJ was out. GROAKER asked our
     position. Gave it to him and asked him to stop chasing us.
     GROAKER replied that he was searching for convoy East of us.
     We continued to run along blind as a bat. Soon received
     message from GROAKER, "Attacking Starboard Flank". We won-
     der unease as to our relative position to the fray.
     Later learned that GROAKER attacked South of us. We must
     have gone directly across the bow of his convoy, within a
     few thousand yards.

                               - 7 -
                               ENCLOSURE (A)

— page 62 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

31 May (18)
Noon: Lat. 04-50 S Long. 113-21 E.

Patrolling blindly East and West with the war apparently
going on all around us. Received contact report from
BLENNY giving position and course and asking if he was
tracking us. Told him negative, fire when ready. It
would have saved us a couple of hours of uneasiness if the
CROAKER had told us what and where she was attacking, with-
out our having to ask twice.
0206 SJ radar back in commission, too late for the show, but
quite a relief to see in the dark again. APR now out of
commission.
0721 APR back in commission.
0738 Closed BLENNY to communicate by VHF. Making plans for the
day. Decided to head East and rendezvous again at dark
West of the Laurot Islands.
0816 Rendezvous completed. Went to 3 engine speed, headed East.
Numerous sailboats sighted during the day.
1920 Closed BLENNY at Eastern area boundary for VHF conference.
Plan is as follows: We will do a little poaching on the
adjoining area, making reconnaissance of the Laurot Island
Group, with BLENNY working the North side and CHUB working
the South side. At moonrise we will meet at the East end
of Mata Siri Island and take a look into the small bay an-
chorage there. If we find anything anchored, we will pull
clear and flip a coin to see who shoots. The winner will
back in close, trimmed down, and fire stern tubes into the
anchorage.
2010 Completed conference and commenced reconnaissance.
2220 Closing Mata Siri Island and getting strong SJ interference.
2240 Wondering how BLENNY's interference carries so far.
Challenged and exchanged calls with HMS TIPTOE, who is also
making survey of Mata Siri. My schedule shows him to be
patrolling South of Lat. 7 South. Started working around
TIPTOE for look at anchorage.
2300 SJ radar went out of commission again. Pulled clear and
sent message to BLENNY and TIPTOE.
2315 Contact report from BLENNY. She has flushed a small AK with
escort and is herding them over into our area.
2317 Went to 4 engine speed and set course to work around islands
and get on projected track. Hope we can get SJ to working
by then.
Have message from ComTaskFor 71 changing our area to E-2.
Plan to assist BLENNY with this contact, then shift areas.

1 June (19)
Noon: Lat. 4-55 S Long. 114-57 E.

0005 BLENNY reports results of her attack negative.

- 8 - ENCLOSURE (A)

— page 63 —
CONFIDENTIAL - U.S.S. HUB (SS 329) SECOND WAR PATROL REPORT.

0039
SJ radar back in commission except we have no PPI and no
lobing.

0219
Getting weak SJ interference from TIPTOE who apparently
cut between the islands. We couldn't do this for fear
she might take a shot at us.

0305
On projected track. SJ contact 2 minutes later, 14,000
yards.

0310
Received report from BLENNY that they had expended 14
torpedoes with negative results and that the C.O.'s face
was red. Notified BLENNY and TIPTOE that we were start-
ing approach. No receipt from TIPTOE.

Tracked from ahead for one hour. Since BLENNY had
bad luck with this target, decided to take our time.
Later decided to attack from the quarter. Did reverse
end around and took station 3,000 yards on target's port
quarter, with escort 1,000 yards on target's starboard
bow. Took up formation speed, 9.5 kts, waiting for a
zig toward. Half moon now 4 hours high but visibility
poor due to complete overcast and intermittent rain squalls.

0433
Zig toward, range 2,400 yards. Opened outer doors prepar-
atory to shooting but was not satisfied with set-up, which
gave a 3,000 yard run. Decided to run with them a while
longer and try to ease in a little closer, since there has
been no indication of detection. Expect a more favorable
zig at 0500. Eased in to 2,000 yards on quarter. Torpedo
run will be down soa.

0500
Zig towards. Target and escort over lapping.

0502
Fired 3 Mk 18-1 torpedoes, depth 4 feet, range 1,450, tor-
pedo run 1,875, track 144 P, spread 300 feet, 200 bearings.
Radar ranges. Swung left and away at flank speed. No hits.
Decided against further expenditure of torpedoes. Reasons:
(1) Our three made a total of 17 that had been fired at this
group in about 5 hours. (2) We know that the BLENNY has a
very good fire control party.

0508
SJ interference to North, believed to be BLENNY or TIPTOE.
No answer to challenge.

0527
SJ contact 7,000 yards with SJ interference. No answer to
challenge.

0537
Contact closing fast. Swung left, went to flank speed.
Contact range 3,200 yards. Believed this to be friendly
sub taking no chances on it being the PC escort. Shortly
afterwards received message from BLENNY to slow for VHF
conference.

0620
Took Southeasterly course while she closed to pass us some
needed radar spares, and for the C.O.'s to hold sym-
pathy conference.

0626
BLENNY reports SJ contact at 16,000 yards. Spares not yet
transferred. They have no torpedoes. We will take crack

- 9 -
ENCLOSURE (A)

— page 64 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.
at it and transfer spares afterwards.
Pulled clear and started tracking 2 targets on base course
090 speed 7 kts. Too late for a night attack and too early
for submerged attack. Moreover the nearest soundings on
the chart are 16 fathoms North and 13 fathoms West of our
DR position. Will run with the target to give 13 fathom
spot good clearance.

0704 Submerged 13,000 yards ahead on target's starboard bow.
Identified target as a small freighter passenger type, a-
bout 1,200 tons, with stack aft, bridge amidships; escort-
ed by an SCS-51 sub chaser, or PC. Escort on starboard bow
of target. Came to 90 track to pull across bow and attack
from port flank. Used ST ranges from 9,000 yards in to
4,100 yds, then shifted to stadimeter ranges with 76 foot
masthead height. As escort approached, put stern on him
and altered course slowly left as he crossed astern at 600
yards, at which point we were dead ahead of target at 3,000
yards. With escort clear, used 75 turns to get on across
target's track and ended up farther across than intended.
Target has been zigging only 15 degrees at odd, long inter-
vals.

0805 Fired 3 Mk 14 torpedoes from stern tubes, depth 6 feet, tor-
pedo run 1,400, track 82 P, gyros near zero. Watched tor-
pedo track run straight and normal. No hits.

0813 Target did not start turning away until after torpedoes had
passed under her. Started taking quick looks at escort and
target while putting stern to escort. He is not alerted yet.
Have false target shell ready.

0816 Escort is headed our way, belching black smoke. Fired false
target shell, followed by a noisemaker (NAC), then another
false target shell. Rigged in sound heads and pit log.
Eased down to 90 feet and started pulling away at 80 turns
on Westerly course.

0822 Altered course to 240° T as Westerly course heads us towards
13 fathoms and we are not sure of our DR position.

0835 Cannot hear escort's screws because of noisemaker. Can hear
his intermittent pinging. Eased experimentally from 90 ft
to 95 then to 100 ft. No depth charges yet. Escort must be
fascinated by NAC beacon, or maybe he is dropping contact
projectiles, that have been rumored in other patrol reports.

0852 Returned to periscope depth and slowed to 60 turns. Observed
escort milling around in vicinity of false targets 3,000 to
4,000 yards away.
Escort gives a belch of smoke and lays down a pattern of 10

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CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

0918 depth charges, then starts milling around again.
     Escort drops another pattern of 5 depth charges. We are
     now 7,000 yards away easing out to Southwest.

0950 Heavy rain squall sets in. Decided to surface and stand
     clear.
0953 Surfaced on Westerly course and sent to BLENNY results
     negative as usual. No receipt.
0957 Rain squall passed West of us leaving escort plainly vis-
     ible. Started chasing the rain squall, 4 engine speed.
1005 SJ radar out of commission again.
1007 Overhauled rain squall and visibility decreased to 500 yards.
     Sent message twice more including dope on radar and request-
     ing rendezvous. She is apparently still submerged.

1057 Submerged. Everyone is tired and SJ is out. Will rest up
     today and rendezvous tonight, then head for new area.
1720 SJ radar back in commission, "A" scope only.
1940 Surfaced and requested the BLENNY to rendezvous.

2100 Received BLENNY message, tracking and investigating uniden-
     tified enemy on base course 230 speed 13. Position 70 miles
     West of us. She is out of torpedoes but still doesn't want
     to go home.
2103 Took intercept course at full speed on 3 engines.
2157 Report from BLENNY that enemy is PC, now on course 215 at 14
     knots. We cannot intercept. Headed for rendezvous point
     designated.

2300 Message from JTF 71 assigning us lifeguard station off of
     Batavia for the 3rd.

2321 Slowed while BLENNY came close aboard and passed radar spares.
     Received following information:

     (1) BLENNY watched our morning attack, while submerged 3
         miles North of us, and tracked our torpedoes by sound as
         running straight.
     (2) PC did not rejoin AK after counter attacking us.
     (3) She later attempted end around on same PC and observed
         PBM circling it (The one the Zoomies later reported as a
         Wakatake DD).
     (4) BLENNY sighted float plane over scene of our attack later
         in morning. Not seen by us.
     (5) She surfaced at 1210, accounting for nonreception of
         our messages.

2355 APR contact 134 mogs. Neither BLENNY nor CHUB know what this
     may be, unless it it the TIPTOE with other radar in addition
     to her SJ.

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CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

                                                                2 June (20)
                                        Noon: Lat. 4-59 S      Long. 112-23 E.

0050    Completed rendezvous and sympathy session and bid the
        BLENNY farewell. Hope we can work with them again. We
        didn't give the Nips much trouble, but it was an active
        whirl and we had lots of fun.
0054    Set course for new area 3 engine speed.
0120    Made 15 minute trim dive and flushed out No. 3 FBT which
        had been converted during rendezvous.
        Sent serial three to CTF 71 revealing the red faced accom-
        plishments of the BLENNY-CHUB sheep pack.

                                                                3 June (21)
                                        Noon: Lat. 5-40 S      Long. 106-47 E.

0910    Submerged East of Thousand Islands. Made "U" turn around
        South Watcher and opened out towards lifeguard station.
        Many sailboats in sight during day.
2025    Surfaced 7 miles Northeast of South Watcher.
2040    BLUEBACK came close aboard and passed us instructions for
        coordinated patrol, and chart showing traffic routes across
        Sunda Strait.
2200    On station for lifeguard duty. Several radar contacts on
        planes. Planes showed running lights until formed up.
        During raid observed several bomb blasts in direction of
        Batavia.
2350    Received word that all planes were away and clear.

                                                                4 June (22)
                                        Noon: Lat. 5-49 S      Long. 105-53 E.

0004    Set course to pass North of Thousand Islands. Intermittent
        interference from BLUEBACK all night.
0730    Submerged. Patrolling Western half of Northern approaches
        to Sunda Strait. BLUEBACK patrolling Eastern half. During
        day observed small craft, built like luggers and smoking
        profusely, running between Toppers Island and Whartway Is-
        land. On Northern leg he would go behind Toppers Island
        but not stand past. Half hour later he would stand out on
        reverse course toward Whartway. Antics of a patrol vessel.
2041    Surfaced and exchanged calls with BLUEBACK and discussed
        plans for next day's patrol.
        During night patrolled Northeast of St. Nicholas Point.
        Many contacts with sailboats and unidentified small craft.
        Some not picked up on SJ until 2,500 yards.

                                                                5 June (23)
                                        Noon: Lat. 5-44 S      Long. 106-26 E.

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CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

0725 Submerged 6 miles North of Babi Island and moved over to
     patrol Northwest of Hoorn Island. Sea has fair ripple
     but no white caps.
1028 JT sound reports possible high speed screws bearing 000° T.
     Nothing visible with 8 feet of periscope.
1033 Went to battle stations. Still nothing in sight.
1043 Sighted mast and ship bearing 012° T, over 24,000 yards,
     angle 15 starboard, later identified as HAGURO class heavy
     cruiser, with MINEKAZE class DD escort and at least two
     float planes and two BETTY bombers for air cover.

     Cruiser is zigging between 180° and 205° at about 5 minute
     intervals, tracking at 21.5 knots, 250 rpm.

1100 Range 9,200, angle on bow 18 starboard. Went to 75 feet
     and came to a 60 track.
1106 Came up expecting a zig toward but observed large zig away,
     range 5,500, angle on bow 60 starboard.
1108 DD has zero angle on bow, CA about 75 starboard.
     Next look DD has 20 port angle on bow, and on following
     look DD is turning away. DD made complete circle to his
     right then bent on a lot of speed to catch up with cruiser.

     Remained at periscope depth and watched this valuable target
     pass by outside the range of our Mk 18 torpedoes.

1122 Observed splash in water close aboard while making low pow-
     er sweep. Ordered down scope, 90 feet, flood negative.
     Heard bombs arm. C.O. was already heckling the diving
     officer by the time two plane bombs exploded close aboard,
     as we passed 70 feet. Reversed course and started opening
     out to better water at 100 rpm. Heard several distant
     explosions during ensuing hour.
2046 Surfaced and set course to pass North of Thousand Islands.

Commentary on Observations:
(1) Believe that large zig away was scheduled zig to round
    Mundi Reef and pass East of Hoorn Island instead of
    West of Hoorn as we had expected. Had first believed
    the zig indicated detection, but we were not bombed
    until 16 minutes later.
(2) The zero angle on the bow by the DD at first indicated
    detection, but completion of his circle indicated that
    he was possibly loosing bearing from CA's bow to quarter
    to allow for a large zig toward. On other hand it is
    possible that DD may have been starting run on us and
    been called back by cruiser to take care of what might
    lay ahead.
(3) Final positive detection and consequent bombing was

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CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PAT. REPORT.

results of foolishly remaining at periscope depth for
16 minutes in vicinity of 4 plane air coverage.

6 June (24)
Noon: Lat. 5-40 S Long. 106-46 E.

0100 Exchanged calls, information and ideas with BLUEBACK. Both
     believe CA is in Batavia for short stay only. Both believe
     he will follow different route on his return trip; as a
     cruiser of this class has been sighted on 3 different routes
     in and out of Batavia by a Dutch submarine. Today we will
     patrol East of Thousand Islands.
0132 SJ contact 3,200 yards on same bearing as BLUEBACK inter-
     ference. (SJ had been in use for some time for communi-
     cations). Believed this contact to be BLUEBACK and that
     range had closed during SJ communication. Allowed range
     to close to 2,500 making sight contact. This craft began
     to flash blinker signals at us, and we, still believing it
     BLUEBACK, flashed back. After considerable exchange of
     unintelligible blinking, while range closed to 1,900, recog-
     nized contact as a patrol boat - definitely not a submarine.
     Stood clear at flank speed.

0729 Submerged and patrolled East of Thousand Islands in vicin-
     ity of South Watcher. QB sound head off 20° in bearings.

2035 Surfaced and set course to pass North of Islands.
2310 Exchanged calls, ideas, and plans with BLUEBACK.

7 June (25)
Noon: Lat. 5-44 S Long. 106-19 E.

0718 Submerged North of Babi Island and moved over to patrol off
     Western tip of Hoorn Island. Sea is flat with barely a
     ripple on the water.
1010 Sighted float plane bearing 115° T and another float plane
     bearing 080° T.
1015 JT sound picked up possible high speed screws partially
     blanketed by the reef noises of Hoorn Island.
1018 Propeller noise definite bearing East and drawing left.
1025 Sighted heavy cruiser hull down, bearing 067° T. Range
     by height of eye formula 18,000 yards, which puts him al-
     most on Great Kotok Island, in the Thousand Island Group.
     Turn count 280 rpm, 24 knots. He disappeared from sight
     shortly, hugging the Thousand Islands. About 15 minutes
     later he slowed to 220 rpm, 19 knots. JT sound tracked
     him out to an estimated range of 40,000 yards.

Commentary:
(1) We were outguessed on cruiser's return trip. Knowl-

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CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

edge that cruiser of this class had been seen by a
Dutch submarine on three different routes in and out
of Batavia led C.O. to believe that he would follow
different route out, especially since we had been de-
tected near his track inbound. Instead the C.O. used
the same return route, hugged the islands closer and
added 2.5 knots speed until clear of expected attack
area.

1316 | Sighted two small Sugar Dogs or Sugar Charlies South of
     | Babi Island on Westerly course. Tracked their smoke into
     | Banteon Bay.
1427 | Sighted float plane headed towards Batavia.
1444 | Sighted small patrol boat in direction of Banteon Bay.
2029 | Surfaced North of Cape St. Nicholas.
     | During night patrolled off West Island until we were com-
     | pletely boxed in by sailboats and other unidentified craft,
     | then shifted to patrol North of Cape St. Nicholas.

8 June (26)
Noon: Lat. 5-49 S Long. 105-53 E.

0025 | Exchanged calls with the BLUEBACK.
0038 | Passed North Watcher. Making sweep for possible targets
     | in shallow water North of North Watcher.
0215 | Reversed course to head back for diving area. Steering
     | various courses to clear the various reefs and numerous
     | sailboats.
0625 | Went to 4 engine speed to reach desired diving position.
0716 | Submerged for patrol of West half of Sunda Strait.
     | BLUEBACK patrolling East side. Slight ripple on the wa-
     | ter during the morning changing to a glassy calm in the
     | afternoon. During the day sighted 2 Sugar Dogs and one
     | Sub Chaser crossing Strait well South of us.

2036 | Surfaced and exchanged calls with the BLUEBACK.
2210 | Headed South, planning to make radar search of Banteon
     | Bay for possible anchored targets.

9 June (27)
Noon: Lat. 5-45 S Long. 105-57 E.

0007 | West side of bay apparently empty. Headed East to check
     | East half of bay.
0017 | Challenged by blinker light sharp on port bow. Cannot
     | see craft and radar gots no contact. Turned away flank,
     | as light continued to blink at us, and opened out to
     | Northward. Will not try searches of this nature again
     | until the sensitivity of our radar is improved to where

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CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

0046 it will pick up small craft farther than they can see us.
     Slowed to exchange calls with BLUEBACK. Learned that she
     is departing area. We will miss her continual and con-
     fusing radar interference through-out the coming nights.
     During remainder of night patrolled North of St. Nicholas
     Point.

0720 Submerged for patrol off Sunda Strait. During day sighted
     6 small luggers and one sub chaser all close inshore and
     none suitable as torpedo targets. Luggers and small Sugar
     Dogs sighted in Sunda Strait have not been attacked by gun
     fire for following reasons:
     (1) Have no specific directives relative to the present of
         projected strategic value of this strait.
     (2) Question the advisability of possibly creating a hor-
         net's nest in a narrow strait that is being used with
         increasing frequency for submarine transit.
     (3) See supplement "A" for additional comment relative to
         small craft contacts in Sunda Strait.

2047 Surfaced. Set course to pass North of Thousand Islands.

                               10 June (28)
               Noon: Lat. 5-22 S Long. 107-37.5 E.

0940 Patrolled on surface during the day on line between
     Indramurya Point and Banka Strait.
     Submerged on SD contacts 10 and 19 miles followed by
     sight contact on one 2 engine bomber, bearing South.
     Changed course to South.

1115 Surfaced and resumed patrol.

1800 Set course to make sweep North of Thousand Islands.

                               11 June (29)
               Noon: Lat. 5-50 S Long. 105-52 E.

0721 Submerged in Northern entrance to Sunda Strait. Decided
     to work well down into the strait today and get on prob-
     able track of the small Sugar Dog traffic.

1036 JT sound reported heavy screws bearing Northeast, drawing
     left. Nothing in sight. Looks as if some worthwhile
     target is crossing Northern approaches to strait on the
     one day we choose to patrol farther South than normal.

During the day the sea was fairly choppy with scattered
white caps, the first we have seen West of the Thousand
Islands. This was caused by a fresh breeze setting in
from the Southwest through Sunda Strait. Normally the
prevailing wind (East Monsoon) is from the Southeast, and
is partially blanked out by the Java Coast and the Thousand
Islands.

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CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

2043 Surfaced.
2145 Passed small craft abeam to port. Radar finally picked it
     up at 1,200 yards.

                       12 June (30)
          Noon: Lat. 5-43 S      Long. 106-28 E.

0722 Submerged 5 miles North of Babi Island and moved over to
     patrol West of Thousand Islands, 3 miles off Mung Island.
1239 Sighted smoke bearing 190° T, Southwest of Hoorn Island.
     Unable to close. Smoke passed South of Babi Island, ap-
     parently headed towards Bantoen Bay.
1417 Headed back up to patrol West of Thousand Islands.
2045 Surfaced 10 miles West of West Island. Set course to make
     a sweep in the shallow water North of North Watcher.
2300 Passed North Watcher Island.

                       13 June (31)
          Noon: Lat. 5-34 S      Long. 106-16 E.

0240 Reversed course and headed down for diving area. Will have
     to dive West of West Island today as insufficient time re-
     mains to reach point farther South before daylight.
0736 Submerged and patrolled 8.5 to 4.5 miles Southwest of West
     Island, in 21 to 18 fathoms of water. Sea has fair chop
     today, but no white caps.

1630 Sighted lugger bearing 060° T and smoke bearing 020° T.
     Bearing on smoke drawing left. Chased this smoke on normal
     approach courses remainder of afternoon. Sighted thick
     black air coverage, but no masts. Bearing of smoke drew
     020° T over to 330° T by night fall. Two columns of
     smoke sighted. Ships were either Southbound and cutting
     across Southwest from North Watcher to run along Sumatra
     coast; or they were Northbound and had come up East side of
     Thousand Islands and were cutting across Northwest towards
     Brothers Islands.
2038 Surfaced and made 10 mile dog leg to West to cover pos-
     sibility that ships were headed Southwest. Closed coast
     to investigate pip, which finally blended in with shore
     line at 15,000 yards.
2140 Stood out from coast and set course to search to North of
     North Watcher Island. Three engine speed.

                       14 June (32)
          Noon: Lat. 4-52 S      Long. 107-30 E.

0000 Passed North Watcher Island, making search to Northward.
0220 Radar officer reports that SJ is acting up and fluctuating

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CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

0250 due to bad magnetron tube, causing double moding of trans-
mitter, with blank spots in PPI sweep coverage.
Abandoned search and reversed course for following reasons:
(1) SJ radar is erratic and unreliable and the sensitivity
is definitely low.
(2) At least 3 engine speed will be required to reach de-
sired diving area, allowing a margin of time for dodging
the small contacts we will encounter on the way.
0253 Went to 4 engine speed. Have 40 miles to go to North Watcher
plus an additional 20 miles to our desired diving spot.

0339 SJ contact bearing 199° T, range 10,100 yards. Commenced
tracking target and deliberated as to whether there was
time available to attack and get clear. Decided that we
would not have time to attack and still reach suitable div-
ing water South of North Watcher, allowing time for dodging
sailboats, reefs and possible patrol craft. Decided that
we could attack and pull clear to East, provided we attacked
before 0500 and made flank speed retirement to East.

0400 Manned battle stations. Target tracking on course 030°,
speed 5 knots, visible from bridge at 7,000 yards. Night
clear with no moon. Decided to attack from starboard quar-
ter, where we would have a cloudy background.

0420 Target now on course 045° T. At 4,500 yards can make out
3 additional targets, much smaller than main target. On
radar the target group was just one blonded pip that did
not begin to break up into separate pips until range had
closed to 4,000 yards. We then shifted to TBT bearings
and radar ranges.

0436 Commenced firing 5 Mk 18-1 torpedoes. Range 2,400, tor-
pedo run 2,650, track 144 S, depth setting staggered 2,3,
and 4 feet. Binocular formula gave ship length of about
200 feet.

0437 Turned left and went to flank speed.
0439:15 Observed, heard, and felt a double explosion (few seconds
apart). Which blanked off main target. The port after
lookout, who was keeping target under constant surveillance
reported that he could no longer make out target shortly
after the explosion. Radar reported that smoke/cloud was
observed on PPI, giving appearance of rain cloud. Shortly
afterwards radar reported only two pips which soon blended
into one as they had during the initial tracking phase.

0451 Steadied up on Easterly course at flank speed, 19 knots,
sound head raised and all ballast tanks dry. The water

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CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

We are running in varios between 12 and 14 fathoms. We
have about 50 miles to go from point of attack to get
across a 12 fathom bank, beyond which the water drops
off rapidly to 18, 19, and 20 fathoms. In case we are
caught short there is a 15 to 16 fathoms pocket 38 miles
along the way.

0612 SJ contact on port bow 5,600 yards. Avoided. During
the hour SJ picked up two more contacts at ranges of
4,400 and 6,000, which were also avoided.

0720 By DR we are crossing the 12 fathom bank and should
soon be in decent water.

0740 Slowed to standard speed on 4 engines.

0747 Sighted cross-tree mast and bridge of sub chaser broad
on starboard bow.

0748 Submerged, being careful to use very little down angle.
Leveled off at 80 feet.

0800 Returned to periscope depth and observed the sub chaser.
He appears to be lying to or kicking ahead slowly on a
Northwesterly course, judging by change of bearing.

0804 Altered course slightly left and went to 90 feet. Diving
officer found that boat leveled off nicely at 87½ feet
and that by flooding in water he got down to 68 feet. He
thought that he was running on a layer (which was true)
and made no report of it.

0815 Ordered periscope depth for another look.

0819 Diving officer requested more speed, stating that he was
having trouble getting up. Shortly after increase in speed
found that we were swinging right with left 20 degrees rud-
der and that diving officer was getting no up angle with
hard rise on both planes. Realized that we were in the mud.
Worked out of mud by pumping and kicking ahead slowly.

0828 Bearing of sub chaser slowly drawing to South. We stood
clear on course 075° T, running 75 turns at 75 feet between
looks. Suspect that this craft may have been stationed
there to intercept us. Can think of no other logical reason
for a patrol craft to be milling around so far from shore
all by himself.

2011 Surfaced in Eastern edge of our area.

2055 Sent serial 5 to CTF 71, reporting our attack, adding that
we had two steam torpedoes remaining aft, and asking whether
we should depart area or remain. Message was cleared through
Darwin and proper authentication received. (Later learned
that message was not received by Subic)

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CONFIDENTIALL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

                                        15 June (33)
Noon: Lat. 5-46 S         Long. 106-41 E.

0200    Set course for South Watcher Island. Have received no
        answer to our message. Will remain in area as we may get
        lifeguard assignment.
0726    Submerged 9 miles East of South Watcher Island. Patrolled
        Southeast of Thousand Islands, between South Watcher Island
        and the Agonieton Islands. Closed Jong Reef to 3,000 yards
        then worked back up between South Watcher and the Thousand
        Islands.
2041    Surfaced 7 miles Northeast of South Watcher.
2312    Set course to close coastline for night patrol.

                                        16 June (34)
Noon: Lat. 4-21 S         Long. 108-37 E.

0300    Set course North to open out from coast. We are scheduled
        to arrive Subic 22 June, which would necessitate departing
        area tonight and running submerged in Karimata Strait to-
        morrow. Decided to depart area this morning for following
        reasons:
        (1) Have only two Mk 14 torpedoes, which are aft.
        (2) By departing area half a day early we can run surface
            through Karimata tonight and gain a full day, and
            arrive Subic 21 June.

        Sent serial 6 notifying CTF 71 that we were departing area
        half day early. Received message that CTF 71 had not
        received our serial 5.
0900    Departed area and set course for Karimata Strait.
1435    Submerged Southwest of Discovery East Bank Light.
1901    Sighted friendly submarine on Southerly course.
1941    Surfaced and commenced transit of Karimata Strait. Passed
        two friendly submarines.

                                        17 June (35)
Noon: Lat. 0-06 S         Long. 107-00 E.

0305    Cleared Karimata Strait. SJ out for 2 hours during
        the day.

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CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT

18-20 June (36-38)

     Enroute Subic Bay P.I., conducting training and school of
the boat. Fired all guns. Made deep dive to test for
leaks prior to refit.
     Sighted several friendly planes.

1200 18 June Lat. 05-10.8 N Long. 107-45 E.
1200 19 June Lat. 9-59.0 N Long. 110-39.5 E.
1200 20 June Lat. 13-47 N Long. 115-35 E.

21 June (39)

0455 Made rendezvous with escort, U.S.S. PRATT (DE 363).
1000 Arrived Subic Bay, P.I.

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CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

(C) WEATHER

Weather encountered South of Borneo was as per sailing
directions. However, off Northwest Java and Sunda Strait the sail-
ing directions state "the Eastern Monsoon blows with force from
East-Southeast between the latter half of April and October, being
strongest in June, July, and August". This wind was negligible.

(D) TIDAL INFORMATION

Currents held closely to those indicated on various H.O.
charts and sailing directions. A current of 4 knots, 150° T. Set
was experienced off the Southern entrance to Lombok Strait on
19 May.

(E) NAVIGATIONAL AIDS

A sweep into the Sabangan Bay area off the Southern coast
of Borneo revealed a bar to have formed around the vicinity of
113°-15'E, 03°-40'. Fathometer readings in water where the chart
showed 11 to 15 fathoms indicated the water to average about 7½
fathoms. To check fathometer we submerged and hit bottom at 45'.
Our position was checked as accurate by three NAVIGATIONAL FIXES.

Cross bearings in the Thousand Island Group were fairly
accurate. However, distortion was noticed on certain bearings
between other islands, such as South Watcher, Babi, and Aganieten
taken in conjunction with the Thousand Islands.

Cross bearings in the Sunda Strait area were accurate
with the exception of North Island on the East coast of Sumatra.
This island is apparently slightly misplaced on the chart.

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CONFIDENTIAL • U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

(F) SHIP CONTACTS

No. | Time
    | Date | Lat. | Long. | Type(s) | Initial Range | Est. Course | Est. Speed | How contacted | Remarks
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
1. | 1300I
    | 5-20 | 06-18 S | 116-05 E | 1 Small AK
    1 Escort | 20,000 yds | 020° T | 9 kts | JP Sound | Subject of
    Spec. Report
2. | 0104I
    | 5-21 | 06-09 S | 115-36 E | 1 Mine
    Sweeper | 18,000 yds | 105° T | 13 kts | SJ Radar | Sunk
3. | 1654I
    | 5-30 | 05-08 S | 113-56 E | 2 Coasters
    1 Sub Chaser
    1 Converted
    Escort | 8,000 yds | 025° T | 4 kts | JP Sound | Subject of
    Spec. Report
4. | 0307I
    | 6-1 | 04-41 S | 115-14 E | 1 Small AK
    1 PC Escort | 14,000 yds | 240° T | 9.5 kts | SJ Radar | Missed
    Surf. Attack
5. | 0626I
    | 6-1 | 04-52 S | 115-14 E | 1 Small AK
    1 PC Escort | 13,800 yds | 070° T | 7 kts | SJ Radar | Sub. Attack
    Torp. seen
    to run under.
6. | 1028I
    | 6-5 | 05-43 S | 106-26 E | 1 Haguro Cl.
    Cruiser
    1 Minekaze
    Class DD | 35,000 yds | 190° T | 21.5 kts | JP Sound | Detected and
    bombed during
    approach, target
    zigged away.
7. | 1015I
    | 6-7 | 05-45 S | 106-22 E | 1 Haguro Cl.
    Cruiser
    1 Minekaze
    Class DD | 18,000 yds | 305° T | 24 kts | JP Sound | Could not
    close.
8. | 0339I
    | 6-14 | 04-49 S | 106-20 E | 4 Small Un-
    idents | 10,100 yds | 050° T | 4.5 kts | SJ Radar | Sank Largest.
9. | 0747I
    | 6-14 | | | 1 Sub Chaser | 18,000 yds | 315° T | 5 kts | Visual | Dove to Avoid.
    from bridge.

Many Luggers, Sea Trucks and small patrol boats were seen
in area Easy Two in vicinity Sunda Strait. For more information
concerning these see Supplement "A" to this report.

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CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

ADDITIONAL INFORMATION FOR TARGETS PICKED UP BY SOUND

| | Depth | Own Speed | Rel. | | Est. Tonnage | Type(s) | Other Sound |
|---|---|---|---|---|---|---|---|
| | No. Water | and Depth | Bearing | Type(s) | Target Speed | Sound | Gear in use |
| 1. | 50 F | 2.6 kts | 350 | 1 Small AK | 600 | JP | QB |
| | | 63' | | 2 Escort | 400 | 3. | 35 F | 2.6 kts | 355 | 2 Coasters | 400 Each | JP | QB |
| | | 63' | | 1 Sub Chaser | 250 | | |
| | | | | 1 Conv. Escort | 400 | 6. | 21 F | 2.6 kts | 265 | 1 CA | 10,000 | JP | QB |
| | | 63' | | 1 DD | 1,200 | 7. | 23 F | 2.6 kts | 020 | 1 CA | 10,000 | JP | QB |
| | | 63' | | 1 DD | 1,200 | | |

(G) AIRCRAFT CONTACTS

All convoys moving during daylight hours had air cover- usually
RUFES. One heavy cruiser encountered on 5 June had a 4 plane escort -
(2) BETTYS and (2) ZEKES.

No new types were encountered.

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CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

(H) ATTACK DATA

U.S.S. CHUB (SS 329) TORPEDO ATTACK NO. [HANDWRITTEN: 1] PATROL NO. [HANDWRITTEN: 2]
Time [HANDWRITTEN: 1339:30] Date [HANDWRITTEN: 20 May 1945] Lat. [HANDWRITTEN: 06-18 S] Long. [HANDWRITTEN: 116-05 E]

Target Data - Damage Inflicted

Description: 600 ton inter-island Freighter converted for escort
duty, single stack, raised forward, amidships, and
aft, with a single tripod mast built up above the
bridge, possibly for radar antenna. He was escort-
ing a small, engines aft AK, 600-800 tons, but be-
cause of his higher superstructure he was assumed
to be the bigger target. Just before firing his
true nature was discovered, but by then he was track-
ing so well that three torpedoes were fired at him.
Propellers were picked up by sound at about 18,000
yards. The sea was slightly choppy with two foot
swells. The ships were sighted by periscope at
14,000 yards.

Ships Sunk: None
Ships Damaged or Probably Sunk: None
Damage Determined by:
Target Draft [HANDWRITTEN: 6'] Course [HANDWRITTEN: 020] Speed [HANDWRITTEN: 9] Range [HANDWRITTEN: 3,000 (at firing).]

Own Ship Data

Speed [HANDWRITTEN: 2.5] Course [HANDWRITTEN: 300-304] Depth [HANDWRITTEN: 65'] Angle [HANDWRITTEN: 1° Dive (at firing).]

Fire Control and Torpedo Data

Type Attack: Periscope approach. ST ranges were used from 8,000
yards into 4,500 yards, when stadimeter ranges were
again used until time of firing. The target chock-
ed very well at 9 knots. About two and a half
minutes after the first torpedo was fired, the tar-
get apparently detected the torpedoes and zigged
towards. It is believed this caused all three tor-
pedoes to pass ahead of the target.

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CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

TORPEDO ATTACK NO. 1

| | 1 | 2 | 3 |
| :| :| :| :|
| Tubes Fired | 1 | 2 | 3 |
| Track Angle | 105-30 S | 104-30 S | 107 S |
| Gyro Angle | 004-30 | 002-30 | 003-30 |
| Depth Set | 4 | 4 | 4 |
| Speed Used | 9 kts | 9 kts | 9 kts |
| Hit or Miss | Miss | Miss | Miss |
| Erratic | No | No | No |
| Mark Torpedo | 18-1 | 18-1 | 18-2 |
| Serial No. | 56015 | 55348 | 57781 |
| Mark Exploder | 8-3 | 8-5 | 8-7 |
| Serial No. | 9480 | 15768 | 8055 |
| Actuation Set | Contact | Contact | Contact |
| Mark Warhead | 18-2 | 18-2 | 18-2 |
| Serial No. | 2748 | 3232 | 4315 |
| Explosive | Torpex 2 | Torpex 2 | Torpex 2 |
| Firing Intervals | 12 sec | 12 sec | 12 sec |
| Type Spread | 3 | 3 | 3 |
| Length of Run | 3,200 yds | 3,200 yds | 3,200 yds |
| Duration of Run | | | |
| Sea Conditions | Light Swells | | |
| Temp. of Electrolyte | 80° F | 80° F | 80° F |
| Injection Temp. | 80° F | 80° F | 80° F |
| Overhaul Activity | N.T.D. | S.R.U. | Navy 137 |

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— page 81 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.
U.S.S. CHUB (SS 329) TORPEDO ATTACK NO. 2 PATROL NO. 2
Time 0248:30 Date 21 May 1945 Lat. 6-15 S Long. 116-01.5 E.

Target Data - Damage Inflicted

Description: Single Ship. AM,DE, or DD (600 tons), picked up at
18,000 yards by SJ radar. At 3,000 yards the target
observed thru the ST periscope was a hazy image with
general contour of an AM,DE, or DD.

Ships Sunk: One 600 ton AM or DE or DD.

Ships Damaged or Probably Sunk: None

Damage Determined by: One timed hit, after which the target's
screws and pinging stopped. Four minutes later a
tremendous explosion was heard. It was much too
loud to be a depth charge as far away as the target
was. Upon surfacing 40 minutes later, SJ had
no contact on the target. A heavy, fresh, strong smell-
ing oil slick and floating debris were found at scene
of attack.

Target Draft: 8' Course 105 Speed 13 Range 3,000 (at firing)

Own Ship Data

Speed 2.5 Course 212-208 Depth 55' Angle 1° Dive (at firing).

Fire Control and Torpedo Data

Type Attack: The target was tracked by SJ radar on the surface for
60 minutes. Submerged 13,000 yards ahead and completed
attack using ST ranges and JT sound bearings. JT sound
bearings, using RLI were excellent and consistent and
considered more reliable than periscope bearings. The
target was changing speed all through the approach from
8 to 17 knots, and at one time slowed to 4 knots. He
was zigging every 5 minutes from 065 to 105. During
the final stages of the approach he checked right on
to bring us 240 yards to target at 107° putting us
on an 83° port track. One minute later 5 torpedoes
were fired. Too much cannot be said for the value and
accuracy of the combination of ST ranges and JT bear-
ings on a single target when the target cannot be seen
clearly and yet detection on the surface is possible
by the enemy's radar.

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CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

TORPEDO ATTACK NO. 2

| | 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|---|
| Tubes Fired | 1 | 2 | 3 | 4 | 5 |
| Track Angle | 98 P | 98-30 P | 100-30 P | 102 P | 104 P |
| Gyro Angle | 335-30 | 336-30 | 334-30 | 332 | 331 |
| Depth Set | 4 | 5 | 4 | 5 | 4 |
| Speed Used | 13 kts | 13 kts | 13 kts | 13 kts | 13 kts |
| Hit or Miss | Miss | Hit | Miss | Miss | Miss |
| Erratic | No | No | No | No | No |
| Mark Torpedo | 18-1 | 18-1 | 18-1 | 18-1 | 18-2 |
| Serial No. | 55259 | 55350 | 53369 | 56992 | 57875 |
| Mark Exploder | 8-5 | 8-5 | 8-5 | 8-5 | 8-5 |
| Serial No. | 10226 | 8954 | 10342 | 11533 | 11001 |
| Actuation Set | Contact | Contact | Contact | Contact | Contact |
| Mark Warhead | 18-1 | 18-2 | 18-2 | 18-2 | 18-2 |
| Serial No. | 4311 | 2009 | 1515 | 4324 | 3970 |
| Explosive | Torpex 2 | Torpex 2 | Torpex 2 | Torpex 2 | Torpex 2 |
| Firing Interval | 10 sec | 10 sec | 10 sec | 10 sec | 10 sec |
| Type Spread | Divergent | Divergent | Divergent | Divergent | Divergent |
| Length of Run | 2,900 yds | 2,900 yds | 2,900 yds | 2,900 yds | 2,900 yds |
| Duration of Run | 3 Minutes 00 Seconds | | | | |
| Sea Conditions | Light Swells | | | | |
| Temp. of Electro. | 80° F | 80° F | 80° F | 80° F | 80° F |
| Injection Temp. | 80° F | 80° F | 80° F | 80° F | 80° F |
| Avorhaul Activity | N.T.D. | S.R.U. | Navy 137 | | |

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— page 83 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

U.S.S. CHUB (SS 329) TORPEDO ATTACK NO. 3 PATROL NO. 2
Time 0502 Date 1 June 1945 Lat. 04-48 S Long. 115 E.

Target Data - Damage Inflicted

Description: Two ship convoy. 800-900 ton Freighter, mast funnel
mast, with an especially tall stack, raised aft and
possibly amidships and forward. Escorted by a PC
stationed on the target's starboard bow. The target
was picked up by SJ radar at 14,000 yards. Visibility
was poor especially at the time of firing when the
target entered a rain squall. The sea was slightly
choppy with three foot swells.

Ships Sunk: None

Ships Damaged or Probably Sunk: None

Damage Determined by:

Target Draft 6' Course 070 Speed 7 Range 1,450 (at firing)

Own Ship Data

Speed 11 Course 269 Depth Surf. Angle

Fire Control and Torpedo Data

Type Attack: Radar surface approach. The target was tracked for an
hour and 32 minutes. The lobing motor was out of com-
mission and bearings were accurate only within 5 degrees.
The target tracked very well at 9.5 knots on base course
260, zigging every 5 minutes from 240 to 280. TBT bear-
ings were used inside of 3,500 yards. Three estimates of
angle on the bow were made when lightning flashes lighted
up the target. On each occasion the observed angle on
the bow agreed exactly with that generated. The attack
was made from the target's port quarter on a 140° track
when the target was on the 240° leg. Neither the target
nor the escort gave any indication of detecting us. The
reason for the miss is unexplainable unless the torpedoes
ran deep.

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— page 84 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.
TORPEDO ATTACK NO. 3

Tubes Fired | 6 | 5 | 4
Track Angle | 144 P | 144 P | 144 P
Gyro Angle | 007-30 | 008 | 004-50
Depth Set | 4 | 4 | 4
Speed Used | 9.5 kts | 9.5 kts | 9.5 kts
Hit or Miss | Miss | Miss | Miss
Erratic | No | No | No
Mark Torpedoes | 18-2 | 18-1 | 18-2
Serial No. | 58104 | 56567 | 57945
Mark Exploder | 8-5 | 8-5 | 8-5
Serial No. | 10088 | 11203 | 9871
Actuation Set | Contact | Contact | Contact
Mark Warhead | 18-2 | 18-2 | 18-2
Serial No. | 3475 | 3012 | 1353
Explosive | Torpex 2 | Torpex 2 | Torpex 2
Firing Interval | 10 sec | 10 sec | 10 sec
Type Spread | Divergent | Divergent | Divergent
Length of Run | 1,900 yds | 1,890 yds | 1,860 yds
Duration of Run |
Sea Conditions | Light Swells
Temp. of Electrolyte | 84° F | 84° F | 84° F
Injection Temp. | 84° F | 84° F | 84° F
Overhaul Activity | N.T.D. | S.R.U. | Navy 137

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CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

U.S.S. CHUB (SS 329) TORPEDO ATTACK NO. [HANDWRITTEN: 4] PATROL NO. 2
Time 0805 Date 1 June 1945 Lat. 04-56 S Long. 115-16 E.

Target Data - Damage Inflicted

Description: Two ship convoy. 1,200 ton Freighter, mast funnel mast,
raised, amidships and aft. Escorted by a PC stationed
on the target's starboard bow. Target was picked up by
SJ radar at 14,000 yards. After sunrise visibility was
good. The sea was slightly choppy with three foot swells.

Ships Sunk: None

Ships Damaged or Probably Sunk: None

Damage Determined by:

Target Draft 8' Course 240 Speed 9.5 Range 1,570 (at firing).

Own Ship Data

Speed 2.5 Course 345 Depth 65' Anglo 1° Divo (at firing).

Fire Control and Torpedo Data

Type Attack: Submerged approach. The target was tracked by radar for
38 minutes. We then submerged at 12,000 yards range,
10° on the target's starboard bow for a dawn attack.
Using ST ranges in to 4,100 yards. We pulled straight
across the target's track to get in position for a
stern shot. Five minutes before firing the target
made a 20° zig to his left. Three steam torpedoes
were fired from the stern tubes on an 82-84 port track,
1,400 yard run. All three torpedoes were seen to pass
under the target. The target did not maneuver to avoid
until the torpedoes had passed under him.

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— page 86 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT

TORPEDO ATTACK NO. 4

Tubes Fired         | 8         | 9         | 10
Track Angle         | 82 P      | 83 P      | 84-30 P
Gyro Angle          | 182       | 182-20    | 177-40
Depth Set           | 5         | 5         | 5
Speed Used          | 7 kts     | 7 kts     | 7 kts
Hit or Miss         | Miss      | Miss      | Miss
Erratic             | No        | No        | No
Mark Torpedo        | 14-3A     | 14-3A     | 14-3A
Serial No.          | 63551     | 66290     | 64154
Mark Exploder       | 6-5       | 6-5       | 6-5
Serial No.          | 25507     | 25523     | 25631
Actuation Set       | Contact   | Contact   | Contact
Mark Warhead        | 16-1      | 16-1      | 16-1
Serial No.          | 16421     | 12852     | 14389
Explosive           | Torpex 2  | Torpex 2  | Torpex 2
Firing Interval     | 8 sec     | 8 sec     | 8 sec
Type Spread         | Divergent | Divergent | Divergent
Length of Run       | 1,400 yds | 1,400 yds | 1,420 yds
Duration of Run     |           |           |
Sea Conditions      | Light Swells |           |
Temp. of Electrolyte| 84° F     | 84° F     | 84° F
Injection Temp.     | 84° F     | 84° F     | 84° F
Overhaul Activity   | N.T.D.    | S.R.U.    | Navy 137

- 32 -
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— page 87 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

U.S.S. CHUB (SS 329) TORPEDO ATTACK NO. 5 PATROL NO. 2
Time 0436 Date 14 June 1945 Lat. 04-41 S Long. 106-22 E.

Target Data - Damage Inflicted

Description: Unidentified. Largest of four ships in column. The
target was picked up by SJ radar at 10,100 yards.
Sensitivity of the radar was known to be low at
the time. The target was visibly seen from the bridge
at 7,000 yards. It was a clear night with no moon.
The sea was calm.

Ships Sunk: One unidentified.

Ships Damaged or Probably Sunk: None

Damage Determined by: Double explosion a few seconds apart. The
explosion was seen from the bridge by the C.O., O.O.D.,
and by one lookout. The second was either an internal
explosion in the target or a torpedo hit in a second
target. Immediately after the explosions the main pip
on the radar showed all the characteristics of a rain
cloud and then disappeared. The target could not be
located by sight shortly after the explosions.

Target Draft 8' Course 050 Speed 4.5 Range 2,535-2,400 (at firing).

Own Ship Data

Speed 10 Course 010 Depth Surf. Angle

Fire Control and Torpedo Data

Type Attack: Surface radar approach. The target was tracked for
54 minutes. TBT bearings were used inside of 3,500
yards. The target changed course twice during the
approach but had no apparent zig plan. Speed check
was good at 4.5 knots. The target gave no indications
of detecting us.

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— page 88 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

TORPEDO ATTACK NO. 5

| Tubes Fired      | 1         | 2         | 3         | 4         | 6         |
|||||||
| Track Angle      | 144 S     | 144 S     | 144 S     | 145 S     | 145 S     |
| Gyro Angle       | 004       | 004½      | 003½      | 005       | 006       |
| Depth Set        | 3         | 4         | 3         | 4         | 2         |
| Speed Used       | 4.5 kts   | 4.5 kts   | 4.5 kts   | 4.5 kts   | 4.5 kts   |
| Hit or Miss      | Miss      | Miss      | Miss      | Hit       | Pos. Hit  |
| Erratic          | No        | No        | No        | No        | No        |
| Mark Torpedo     | 18-1      | 18-2      | 18-1      | 18-1      | 18-2      |
| Serial No.       | 54226     | 57335     | 56781     | 53979     | 58100     |
| Mark Exploder    | 8-5       | 8-5       | 8-5       | 8-5       | 8-5       |
| Serial No.       | 8465      | 11433     | 11502     | 11579     | 10722     |
| Actuation Set    | Contact   | Contact   | Contact   | Contact   | Contact   |
| Mark Warhead     | 18-2      | 18-2      | 18-2      | 18-2      | 18-2      |
| Serial No.       | 3347      | 4298      | 3215      | 3490      | 4322      |
| Explosive        | Torpex 2  | Torpex 2  | Torpex 2  | Torpex 2  | Torpex 2  |
| Firing Interval  | 10 sec    | 10 sec    | 10 sec    | 10 sec    | 10 sec    |
| Type Spread      | Divergent | Divergent | Divergent | Divergent | Divergent |
| Length of Run    | 2,700 yds | 2,675 yds | 2,625 yds | 2,600 yds | 2,550 yds |
| Duration of Run  |           |           |           | 2 M 50 S  | 2 M 54 S  |
| Sea Conditions   | Calm      |           |           |           |           |
| Temp of Electro. | 84° F     | 84° F     | 84° F     | 84° F     | 84° F     |
| Injection Temp.  | 84° F     | 84° F     | 84° F     | 84° F     | 84° F     |
| Overhaul Activity| N.T.D.    | S.R.U.    | Navy 137  |           |           |

- 34 -
ENCLOSURE (L)

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CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

(I) MINES

None Encountered.

(J) ANTI-SUBMARINE MEASURES AND EVASION TACTICS

In the Java Sea, targets worthy of torpedo fire normally have
air cover during the day, as well as surface escorts. The potential
value of a smoke contact can usually be ascertained by looking above
it for a float plane. No radar equipped night search planes were
encountered. Detection and bombing of the CHUB on 5 June is attri-
buted to our remaining too long at periscope depth in vicinity of
four plane air cover, when sea, though slightly choppy, had no white
caps.

On 20 May the converted freighter type escort was evaded by
slow speed running at 200 feet. Although he dropped 12 depth charges,
he is not believed to have had definite contact on us at any time.
He did not use echo-ranging.

On 1 June, following an unsuccessful attack with Mk 14 tor-
pedoes, a PC or SCS-51 class escort was evaded by firing 1 false
target shell, 1 NAC beacon, and 1 more false target shell. We then
cleared the point by running between 90 and 100 feet at a speed of
4 knots. The escort was later observed to drop 15 depth charges
in the vicinity of the false target shells. Prior to dropping
depth charges, it is suspected that this escort may have dropped
contact projectiles. There is no evidence to substantiate this
suspicion except the 47 minute time lag between our attack and the
first barrage of depth charges.

Sunda Strait appears to be patrolled by a sub chaser which
spends most of his time in the vicinity of Toppers Island and sel-
dom ventures out into the center of the strait.

Night patrol boats were encountered Northeast of the
Thousand Islands and near the entrance to Banteon Bay. In each case
we were challenged by blinker light. Those craft were avoided by
turning away at high speed.

(K) MAJOR DEFECTS AND DAMAGE

HULL

Installed missing gasket in hydraulic accumulator to
remedy air leak.

Installed shims under Third Stage head of No. 1 air
compressor to give proper clearance. Compressor would not de-
liver maximum output.

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CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

MACHINERY:

     Renewed two cracked liners on No. 3 main engine.

     Attached salt water pump on No. 1 main engine failed.
Found both ball bearings carried away. Installed spare pump.

ORDNANCE AND GUNNERY:

     None.

                                                  (L) RADIO

DEFECTS:

     None noted.

RECEPTION, TRANSMISSIONS AND REMARKS:

     Reception of VIXO was good for first two days before shift-
ing to NPT1.

     Reception of NPT1 was difficult during first two weeks due
to distance and transmitting troubles.

     The frequencies most used were 9250 kcs and 4370 kcs. At
times 9250 kcs faded out in the morning and afternoon when 12630 kcs
and 4370 kcs were heard with a good signal.

     The only interference experienced on this schedule was from
a broadcast station on 9250 kcs, whose carrier would block NPT1
signals. By turning off the receiver beat oscillator we were able
to copy NPT1 due to NPT1's signals beating with the broadcast car-
rier.

     The lifeguard frequency of 4475 was guarded whenever friendly
planes were known to be in the area with no interference. The signals
received were weak due to distance.

     Difficulties were again experienced with VHF in communication
with friendly submarines and reception faded completely at ranges
in excess of 2,000 yards.

     The WOLFPAC frequencies were guarded continuously in area
with good results.

     Seven ship to shore transmissions were made during this
patrol. The first was receipted for by NPT1 on 8470 kcs, second and

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— page 91 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

third by VHM on 4235 kcs, fourth by VIXO on 4235 kcs, the fifth was
receipted for by VHM on 4235 kcs with the correct authenticator but
message did not reach addressee, the sixth was received by VIXO on
4235 kcs and the last by VHM on 8470 kcs.

During June enemy signals were heard on the new frequencies
but did not interfere with communications.

A message from the BALAO was intercepted at a distance of
2,800 miles, (WOPACO area frequency).

(M) RADAR

MODEL SJ-1
OPERATION:

The operation of the SJ radar during this patrol was poor
and frequent material troubles resulted in the equipment being often
out of commission.

The SJ was operated continually while on the surface as a
guard against low flying planes.

MATERIAL AND MAINTENANCE:

The material condition of the SJ was very poor and fre-
quent equipment failures resulted in many hours lost operation
and continued servicing and maintainance while submerged.

The following equipment failures were experienced:

Intermittent low transmittor high voltage(1000), high
on-time current(250), double sweeps, apparent change in frequency,
compensation voltage low.
With this trouble in the equipment the H.V. Rectifier, Mod.
Generator, and associated circuits and tubes in the transmitter
were checked to be hot straight and normal, including waveforms.
This trouble caused the radar gang many "sleepless
headaches". Severe jolting of the transmitter case
would intermittently cause the trouble. After a final jolting
at the end of a week of profitless trouble-shooting it disappeared
entirely and never came back again. Wow!

High voltage meter reading low (900) R44 meter multiplier
in Selector Unit had changed in value from 1.5 to 1 Meg. Replaced
for normal operation.

No sweeps PPI and Range Ind. All motors normal. This
was caused by the burned out high voltage winding of the H.V.

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CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.
transformer T-1 in the Range Ind. No spare was carried for this
transformer so the spare transformer in the H.V. circuit of the
SD Range Ind. was used. This transformer is 350 volts higher than
the SJ but gave satisfactory operation.
     There were no apparent causes for the failure of this
transformer, being no grounds and all circuit elements checking
properly. However, the filter resistor, R62, normally 150,000
ohms, 10 watts had been replaced during the last refit by a 48,000
ohm, 2 watt resistor - presumably a modification for the ST in-
stallation. This resistor, though measuring 48,000 ohms, showed
signs of being overheated and was replaced with the 150,000 re-
sistor in spares.
     The increase in current caused by the substitution of
this resistor may have been responsible for the transformer's
failure.

     High voltage fuses burn out when equipment is started.
Replaced the 836's H.V. rectifier tubes.
     Intermittent grass on "A" scope, replaced defective 6LC7.

     No PPI presentation, replaced burned out resistor, R44,
with spare. Before replacement the H.V. circuit was checked as
to resistances and circuit elements (normal). The spare lasted
three days and burned out.
     There was no spare 7 meg. resistor of sufficient wattage
on board and attempts to repair the defective one were fruitless.
The PPI was out for a day and a night until a spare was obtained
from the U.S.S. BLENNY.
     This time the cause was discovered due to the retaining
bushing on the PPI range selector switch grounding out the LP
lamp (pilot) and consequently 220,000 ohms of bleeder resistance.
     The modification of the 20,000 yd PPI sweeps was made
during the last refit and when the switch was replaced the nut
holding the bushing in place was left off allowing the bushing
to be jarred loose.
     As the unit was on its side on the deck when the first
check was made the trouble and/or bushing was free.

     Lobing out. Replaced broken brush on lobing 115 volt
supply slip ring.

     Persistant 1,500 yd tunable falso echo, replaced magnetron.

     No line voltage. Defective line switch. Strapped out
defective side.

RADAR SD-5

     The performance of the SD during this patrol was good
and the ranges obtained on planes were good. While on the surface
the SD was keyod at one minute intervals during the day and two
minute intervals at night.

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CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

With the now long persistant screen of the SD-5 it was only
necessary to key the equipment for one second.
It was found that echos, particularly distant ones (15 miles),
could be more easily seen on the 80 mile sweep, sometimes not even
appearing on the expanded 20 mile sweep.

The only material trouble was arcing 8014's.

RADAR ST

The ST radar gave very good performance during the patrol.
A little trouble was experienced with the tuning drifting but this
was met by constantly checking against the echo box while being used.
Ranges obtained were good for this gear. Typical ranges
were 10,000 yds on a small AM with seven foot periscope exposure, and
6,000 yds on 125 foot land at two foot exposure.
The success of the ST for submerged night attack has been
detailed under SOUND.
No material maintainance was required other than normal
routines and the only equipment casualty was the breaking of the
plastic window in the Adaptor wave guide.

In connection with this casualty it should be mentioned
that the mica window in the adaptor wave guide was not made to
be easily replaced. The brass collar that holds it in place is in
such a position that it cannot be removed without a special tool
or dismantling the adaptor unit. Inasmuch as this would seem to be
a possible frequent casualty, some means of rapid and simple replace-
ment should be provided.

(N) SONAR GEAR AND SOUND CONDITIONS

The JK-QC and the QB sound gear turned in its normal good
performance during this patrol. The gear was manned continually
while submerged and on the surface at speeds up to fifteen knots.

During the latter part of the patrol both sound shafts be-
came noisy and developed what was apparently a hydraulic knock.
This knock and binding seems to be between the inner stationary
piston and the shaft cylinder. It is suspected that the shafts
are out of alignment due to either a bomb explosion or scraping of
the heads on the bottom. The starboard QC head also gives evidence
of being about 90 degrees off in bearing and damage to the head is
suspected.

The JP topside gear gave excellent performance. Besides
detecting enemy screws at great ranges it was also good for lo-
cating own ship's noises. Small patrol ships were detected when
their mast were below the horizon at a depth of 58 feet. An enemy

- 39 - ENCLOSURE (A)

— page 94 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

heavy cruiser was tracked at ranges greater than 40,000 yards.

Too much can not be said for the JT sound equipment. The
accuracy of the bearings (½ to 1 degree) was definitely proved during
a successful torpedo attack in which all bearings obtained were from
the JT.

The combination of the ST radar ranges and JT sound bearings
is ideal for a night submerged attack on a single ship. Ranges were
given to the TDC from the ST immediately following the JT bearings
and resulted in a perfect problem solution.

The CHUB feels that the JT with its associated power train-
ing and RLI is the best sound equipment that has yet been installed
in our submarines.

(O) DENSITY LAYERS

In the area around the Southeast corner of Borneo clear
negative gradients were obtained on almost every dive. These were
two to three degrees and began at about 125 foot extending to 150
to 200 feet.

In the Lombok area a six degree gradient was obtained start-
ing at 125 feet and extending to 180 feet.

The area about the Thousand Islands and the Northwestern tip
of Java was entirely isothermal.

(P) HEALTH, FOOD AND HABITABILITY

HEALTH:

The health of the crew in general has been excellent. The
MoMMs and the baker were troubled with heat rash the first half of
the patrol run. Two minor injuries occured causing some extra work
for the Radio and Quartermaster gangs, and one man was troubled
with a kidney.

FOOD:

The food was good and well prepared. The baking was ex-
cellent.

HABITABILITY:

The boat was cool and comfortable throughout most of the run.
There were times during the first of the patrol, however, when the
air conditioning could have been better.

- 40 -

ENCLOSURE (A)

— page 95 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

(Q) PERSONNEL

(a) Number of men detached after previous patrol14
(b) Number of men on board during patrol79
(c) Number of men qualified at start of patrol64
(d) Number of men qualified at end of patrol71
(e) Number of men unqualified making their first patrol.... 10

COMMENTS:

The performance of duty of both officers and men was
excellent.

(R) MILES STEAMED - FUEL USED

                 MILES      GALLONS
Base to area     1,579.5    20,438
In area          7,058.8    82,697
Area to base     1,201      14,545

(S) DURATION

                 DAYS
Days enroute to area  5
Days in area         30
Days enroute to base  3
Days Submerged       23

(T) FACTORS OF ENDURANCE REMAINING

TORPEDOES    FUEL     PROVISIONS    PERSONNEL FACTOR
2            2,600    20 Days       14 Days

Limiting factor this patrol: Torpedoes.

(U) COMMUNICATION, RADAR, AND SONAR COUNTERMEASURES

COMMUNICATION COUNTERMEASURES

No enemy signals were intercepted.

- 41 -                               ENCLOSURE (L)

— page 96 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) SECOND WAR PATROL REPORT.

     The usual expected jamming and interference was experienced
with none of it being too effective. Foreign voice interference was
encountered on all the June WOLFPAC frequencies.

RADAR COUNTERMEASURES

     None.

SONAR COUNTERMEASURES

     None.

(V) REMARKS

     This patrol was handicapped throughout by poor and un-
reliable performance of the SJ radar. This equipment often went
out of commission at the most inopportune time. Towards the end
of the patrol the sensitivity of the radar became definitely low
and the equipment could not be depended on to give warning of the
nearby presence of small craft.

     The performance of the JT sound gear (JP with RLI) on
this patrol was excellent. On several occasions this equipment
picked up propeller noises beyond the range of visibility.

     It was most disappointing to see the Jap heavy cruiser
slip by us twice without getting off a shot. On the first try
we came close but were still outguessed. On the second passage
we were completely outguessed.

     All hands worked hard this patrol and we feel that we
gave the Japs a good run for their money. We do not have a
great deal to show for the number of torpedoes we fired; but we
feel that a lower percentage of hits must be expected nowadays.
Ships are scarce, most of them are small, and the small ones
are harder to hit than the large ones.

     The directives of Commander Submarines, SEVENTH FLEET
confidential letter FE24-71/L13-1 Serial 0243 of 2 February
1945 have been complied with.

                                   - 42 -                               ENCLOSURE (A)

— page 97 —
FC5-22/A16-3
Serial 0138

CONFIDENTIAL

FIRST ENDORSEMENT to
U.S.S. CHUB (SS329) -
Report of Second War Patrol.

SUBMARINE SQUADRON TWENTY-TWO

Care of Fleet Post Office,
San Francisco, California,
24 June 1945.

00/Bn

From: Commander Submarine Squadron Twenty-two.
To : Commander in Chief, United States Fleet.
Via : (1) Commander Submarines, SEVENTH FLEET.
      (2) Commander, SEVENTH FLEET.

Subject: U.S.S. CHUB (SS329) - Report of Second War Patrol.

      1. The U.S.S. CHUB (SS329) departed FREMANTLE, W.A., 14 May 1945, on
her second war patrol under the command of Commander C. D. RHYMES, Jr., U.S. Navy.
She arrived SUBIC BAY, LUZON, P.I., on 21 June 1945, after a patrol of thirty-eight
(38) days, of which thirty (30) days were spent in assigned areas in the JAVA SEA.

      2. Area coverage was good. Handicapped by the material difficulties
and failures of the SJ radar, nevertheless an aggressive search was made for
targets in shallow and confined waters.

      3. Torpedo Attack #1. In a day periscope attack on 20 May, attacked
a 600 ton escort of converted freighter type escorting a small engine-aft freighter.
Fired three (3) Mk. 18-1 torpedoes, torpedo run 3200 yds., average track angle
105 S, average gyro angle 003°, depth set 4 feet. No hits. Target apparently
detected and avoided torpedoes.

      Torpedo Attack #2. On 21 May, in a night submerged approach using
ST radar and SJ sound bearings, fired five (5) torpedoes at an AM-DE type target.
Torpedo run 2900 yds., average track 101 P, average gry 330°, depth set 4 and 5
feet. One hit. Target sunk.

      Torpedo Attack #3. 1 June. In a night surface radar attack, fired
three (3) Mk. 18-1 torpedoes at a small escorted AK. Torpedo run 1875 yds., average
track 144 P, average gyro 006°, depth set 4 feet. No hits. Torpedoes may have
run under target, more likely misses may be attributed to control errors with a
foreshortened target.

      Torpedo Attack #4. 1 June. In a day periscope attack on a 1200
ton stack aft freighter escorted by one (1) SCS-51 sub chaser, fired three (3)
Mk. 14 torpedoes, depth set 6 feet, torpedo run 1400 yds., average track 820 P,
average gyro angle 181°. No hits. Torpedoes passed under target.

      Torpedo Attack #5. 14 June. Night surface radar attack on four (4)
ship convoy, using TBT bearings, fired five (5) Mk. 18-1 torpedoes, torpedo run
2650 yds., average track 144° S, depths set 2, 3, and 4 feet staggered. One,
possibly two, hits. Target, estimated approximately 1000 tons by the Commanding
Officer, sunk.

-1-
[STAMP: 7 05114]

— page 98 —
FC5-22/A16-3
Serial 0138
CONFIDENTIAL
Subject:

SUBMARINE SQUADRON TWENTY-TWO

00/Bn
24 June 1945.

U.S.S. CHUB (SS329) - Report of Second War Patrol.

4.
Successful use was made of false target shells and N/C Beacon in
evasion following the unsuccessful attack on 1 June.

5.
The CHUB returned from patrol in an excellent state of cleanliness.
A normal refit is indicated with docking scheduled to determine possible damage
from bottoming in mud. The SJ radar will be given most diligent attention in
order to insure that this smart ship is not handicapped on her next patrol.

6.
The Commanding Officer, officers and crew are congratulated upon the
completion of this alert and aggressive patrol and for the damage inflicted upon
the enemy.

[SIGNATURE: E. S. Hutchinson]
E. S. HUTCHINSON.

— page 99 —
[HANDWRITTEN: 7-9-45]

FE24-71/A16-3
Serial 0174-A
[STAMP: C O N F I D E N T I A L]

UNITED STATES NAVY
12/ms
3 July 1945

SECOND ENDORSEMENT to:
USS CHUB Conf. Ltr. A16-3
Serial 065, dated 21 June,
1945. Report of Second 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. CHUB (SS329) - Report of Second War
Patrol - Comment on.

1. The Second War Patrol of the U.S.S. CHUB (SS329) un-
der the command of Commander C. D. RHYMES, Jr., U.S.N., was con-
ducted in assigned areas in the JAVA SEA.

2. Although hampered the entire patrol by material dif-
ficulties and failures of the SJ radar, the CHUB aggressively
searched out and made five torpedo attacks on enemy shipping. Two
of these attacks resulted in damage to the enemy. It is regret-
able that the CHUB was not able to close the HAGURO class heavy
cruiser with a MINEKAZE class DD escort which were sighted on 5
June and again on 7 June.

3. The award of the Submarine Combat Insignia is author-
ized for this patrol.

4. The Force Commander congratulates the CHUB on her
aggressiveness in penetrating shallow and confined waters to seek
out the enemy at a time when his shipping is extremely scarce and
each ship extremely valuable to him. The CHUB is credited with in-
flicting the following damage on the enemy:

SUNK
* 1 Freighter (EU) 600 Tons.
1 AM (EU) 630 Tons.
1 Unident (EU) 1,500 Tons.
Total 2,730 Tons.

* This sinking covered by special report.

[HANDWRITTEN: 7-9-45]
- 1 - [SIGNATURE: James Fife]
ORIGINAL COPY 7 05114

— page 100 —
FE24-71/A16-3
[STAMP: Serial 0174]
[STAMP: CONFIDENTIAL]
C-O-N-F-I-D-E-N-T-I-A-L

SECOND ENDORSEMENT to:
USS CHUB Conf. Ltr. A16-3
Serial 065 dated 21 June,
1945. Report of Second War
Patrol.

Subject: U.S.S. CHUB (SS329) - Report of Second War
Patrol - Comment on.

DISTRIBUTION:

Cominch (3) Direct CTG-71.8 (2)
Opnav (2) Direct ComSubRon-22 (2)
Opnav Op-33c (1) ComSubRon-26 (2)
ComlstFlt (1) ComSubRon-30 (2)
Com2ndFlt (1) DivComsSubRon-22 (1 each)
Com7thFlt (2) DivComsSubRon-26 (1 each)
ComSubslstFlt (30) DivComsSubRon-30 (1 each)
ComSubs2ndFlt (4) S/M School, N.L. Conn. (2)
CTF-71 (7) Comdt. NYD, Puget Sound (1)
CTG-71.5 (2) SubAd, Mare Island (2)
S/Ms 7thFlt (1)

[SIGNATURE: J. B. Miller]
J. B. MILLER,
Flag Secretary.

UNITED STATES NAVY

12/ms

3 July 1945

THIS REPORT WILL BE DESTROYED
PRIOR TO ENTRY INTO ENEMY
CONTROLLED WATERS.

[STAMP: COMMANDER]
[STAMP: 1 JUL 1945]
[STAMP: RECEIVED]
[STAMP: 48064]

- 2 -

— page 101 —
[STAMP: RE NO F574]
[STAMP: 7 0511]
[STAMP: REG. SHEET NO 280]
UNITED STATES FLEET
COMMANDER SEVENTH FLEET

[HANDWRITTEN: 20 JUL 1945]

A16-3(8)(P-3c/cgj)
Serial: 04983

C-O-N-F-I-D-E-N-T-I-A-L
THIRD ENDORSEMENT to:
CO USS CHUB conf ltr
A16-3, serial 065,
dated 21 June 1945.

From: Commander Seventh Fleet.
To : Commander-in-Chief, United States Fleet.

Subject: U.S.S. CHUB (SS329) - Report of Second War
Patrol - comment on.

1. Forwarded.

2. The Commander Seventh Fleet congratulates
the CHUB for damage inflicted on the enemy.

[SIGNATURE: J.G. Kinkaid]
T. C. KINKAID
[HANDWRITTEN: R+L]
[HANDWRITTEN: was]

Copy to:
ComSubs7th
ComSubRon-22
CO USS CHUB (SS329)

— page 102 —
U.S.S. CHUB (SS 329)

SS329/A16-3
Serial ( 075 )

Care of Fleet Post Office,
San Francisco, California,
17 August 1945.

DECLASSIFIED I-A-L

From: The Commanding Officer, U.S.S. CHUB (SS329).
To : The Commander-in-Chief, UNITED STATES FLEET.
Via : (1) The Commander Submarine Division THREE HUNDRED ONE.
(2) The Commander Submarine Squadron THIRTY.
(3) The Commander Submarines, SEVENTH FLEET.

Subject: U.S.S. CHUB - Report of War Patrol Number Three.

Enclosure: (A) Subject Report.
(B) Track Chart (Seventh Fleet only).

1. Enclosure (A), covering the THIRD war patrol of this
vessel conducted in the waters of Java Sea during the period of 10
July 1945 to 13 August 1945, is forwarded herewith.

[SIGNATURE: C. D. Rhymes Jr.]
C. D. RHYMES, Jr.

[STAMP: DECLASSIFIED-ART. 0445, OPNAVINST 5510.1C]
[HANDWRITTEN: BY OP-09B9C DATE 5/25/72]

[STAMP: DECLASSIFIED]

10 01324

— page 103 —
CONFIDENTIAL J.S.S. CHUB (SS 329) THIRD WAR PATROL REPORT.

(A) PROLOGUE

Arrived Subic Bay, P.I., 21 June 1945 from Second War Patrol.
Normal refit conducted by Relief Crew of Submarine Division 222 and
the U.S.S. GILMORE. Ship was docked to determine damage from bottom-
ing on Second Patrol. Regular officers and crew returned on 6 July
1945. We were well pleased with the refit job. The following offi-
cer was detached: Lieut(jg) Evan E. WATTS, USN. The following offi-
cers reported aboard for duty: Lieutenant David HUME, USNR and Ensign
Roy K. JONES, II, USN. Conducted 3 days training exercises under Cap-
tain T. C. LAKE, USN and received several valuable suggestions from
him. Ready for sea 15 July 1945.

(B) NARRATIVE

| File No. | Officers             | Rank             | Total Patrols Including This One |
| :------- | :| :| :|
| 74884    | RHYMES, Cassius D. Jr. | Commander, USN   | Nine                             |
| 97004    | CARROLL, Robert M.   | Lieutenant, USNR | Ten                              |
| 102372   | HUME, David          | Lieutenant, USNR | Three                            |
| 187845   | REHTMEYER, Robert T. | Lieut(jg), USNR  | Two                              |
| 223881   | CORDRAY, Austin E.   | Lieut(jg), USNR  | Three                            |
| 253682   | QUINLAN, John W.     | Lieut(jg), USNR  | Five                             |
| 199373   | SCHLICHT, John M.    | Lieut(jg), USN   | Three                            |
| 258456   | CLARY, Everett B.    | Lieut(jg), USNR  | Three                            |
| 390057   | TAYLOR, Arnott B.    | Ensign, USN      | Two                              |
| 389703   | JONES, Roy K. II     | Ensign, USN      | One                              |

Chief Petty Officers

| Ser. No. | Chief Petty Officers | Rate  | Total Patrols Including This One |
| :------- | :| :---- | :|
| 228 2774 | ADAMS, Edward A.     | CTN   | Five                             |
| 201 3234 | BROOKS, Charles (n)  | CMOMM | Eight                            |
| 300 1245 | CONFORS, Jack T.     | CEM   | Nine                             |
| 616 7775 | EMMONS, Charles R.   | GMOMM | Three                            |
| 381 1759 | HERFELD, Marvin E.   | CEM   | Twelve                           |
| 337 0322 | SCHMIDT, Fred H.     | CMOMM | Eight                            |
| 238 7164 | SULLIVAN, Ephriam R. | CPHM  | Three                            |
| 407 2323 | WELSH, Robert A.     | CRM   | Nine                             |

15 July 1945 (1)
ALL TIMES ITEM (-9)

1405 Departed Subic Bay, P.I. for Third War Patrol.
1548 Submerged to conduct Sound Training exercises with WOODSON
     (DE359).
1629 Surfaced and went to maximum sustained speed to conduct
     search for downed aviators North of us.

- 1 - ENCLOSURE (A)

— page 104 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) THIRD WAR PATROL REPORT.

16 July 1945 (2)
Noon: Lat. 18-37 N Long. 117-13 E.

1620 Conducting search for downed aviators; running at four engine
     speed to give increased coverage.
     Received message from aircraft: "Services Completed".
     Set course for area at 3 engine speed.

17-21 July 1945 (3-7)
Enroute patrol area conducting training dives, drills, and
school of the boat. Passed BLUEFISH, LIZARDFISH and BLENNY
enroute.

1200 17 July Lat. 14-07 N Long. 116-22 E.
1200 18 July Lat. 12-16 N Long. 113-18 E.
1200 19 July Lat. 9-19 N Long. 110-20 E.
1200 20 July Lat. 5-08 N Long. 107-37 E.
1200 21 July Lat. 0-15 S Long. 106-44 E.

22 July 1945 (8)
Noon: Lat. 4-19 S Long. 109-44 E.

0015 Commenced transit of Karimata Strait.
0845 Completed transit of Karimata Strait.
1431 Entered assigned patrol area.
1848 Went alongside two masted sail boat to investigate. Crew
     definitely natives and carrying no suspicious cargo.
2313 Set course to rendezvous with BOARFISH.

23 July 1945 (9)
Noon: Lat. 5-50 S Long. 113-31 E.

0222 Went close aboard BOARFISH and passed instructions via line
     throwing gun for patrol of area.
0236 Stood clear and set course towards Kangoan Islands.
0900 Submerged for training of planesmen.
1210 Surfaced and resumed surface patrol.

24 July 1945 (10)
Noon: Lat. 7-43 S Long. 114-26 E.

0020 Passed East of GoaGoa Island. Set course towards Bali.
0415 Went close aboard HARDHEAD and passed instructions via line
     throwing gun, then stood clear.
0714 Submerged Southeast of Meindorts Reef Light.

1343 Sighted smoke and stack bearing 165° T.
1402 At 59 feet got ST radar range of 8,400 yards. Target identi-

- 2 - ENCLOSURE (A)

— page 105 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) THIRD WAR PATROL REPORT.

1440 fied as a large fleet type ocean going tug, rounding Cape
     Sedano close inshore. Later sighted small diesel tug on
     large tug's bow. Targets too far inshore for torpedo at-
     tack.
     Made battle surface on target's quarter and opened fire
     with 5" at initial range of 5,000 yards. The target was
     maneuvering radically and we scored no hits until the range
     had closed to 3,500 yards. Thereupon both tugs boached them-
     selves and abandoned ship. Closed range to 1,700 yards and
     made two runs parallel to beach at 7 knots, firing 5" gun at
     the large fleet tug which was built of steel, and firing the
     40mm at the small diesel tug, which was made of wood. Got
     46 hits with 5" in the large tug and 50 hits with 40mm in the
     small tug, setting both of thon and the grass on the beach
     ablaze.
1522 Ceased firing having expended 113 rounds of 5" and 212 rounds
     of 40mm.
1540 Commenced maneuvering to pick up a prisoner.
1552 Picked up one volunteer Indonese prisoner and set course to
     open out from beach at 4 engine speed. Just in time.
1557 Submerged on sighting plane coming in from direction of land.
     Stern planes jammed on hard rise and we came back up to 55
     feet before catching boat and starting down again.
1559:02 One plane bomb close as we passed 70 feet on way down again;
     apparently dropped on our second swirl. Had this plane came
     out ten minutes earlier he could have caught us flat footed,
     backing and twisting.

COMMENT:

1. Tugs were observed to be still burning 4 hours later and
   beach fires 5 hours later. Consider small tug completely
   destroyed; and large tug damaged beyond salvage.
2. Close inshore it was necessary to keep close check on
   alertness of lookouts; as SD radar was blanked off by
   nearby mountains and hills, and consequently useless.
3. Obtained following information from prisoner:
   (a) Two German submarines in Soerabaja manned by Japs have
       made short runs out of harbor. He did not know whether
       these were trial runs or anti-submarine runs.
   (b) Very few Japs and very little shipping in Soerabaja.
   (c) Tugs were on a grocery run to and from Gradjagan.
   (d) There is a Jap Army camp near spot where tugs were
       boached. (We observed this camp while firing, two
       miles to the Westward).

                                        25 July 1945 (II)
Noon: Lat. 7-10 S Long. 115-10 E.
0711 Submerged and commenced patrolling off Kangean Island. BOARFISH

                                        - 3 -                                        ENCLOSURE (A)

— page 106 —
CONFIDENTIAL - U.S.S. CHUE (SS 329) THIRD WAR PATROL REPORT.

1553 is West of us off of GoeGoe Island. HARDHEAD and STUBBORN
1600 are East of us.
1604 Sighted float plane bearing 270° T.
1607 JT sound picked up screws bearing 270° T.
1607 Sighted masts bearing 270° T, headed towards.
1607 Target zigged away to pass North of Komirian Island. Came to
normal approach at 6 knots between looks; but unable to close.
Last range 6,800 yards as target headed up to Kangoan Island
and skirted its Southern Coast. The target was a converted
2 stack DM or APD. Target had apparently passed well South of
the BOARFISH on a base course of about 090° T, then went North
of us on a base course of 060° T, then out of sight on base
course 100° T.
1825 Heard two distant explosions that sounded like torpedo hits.
2005 Surfaced and called HARDHEAD, CABRILLA, and H.S STUBBORN.
Learned that STUBBORN had sunk target with two hits, as it
passed Saibus Island.

26 July 1945 (12)
Noon: Lat. 6-21 S Long. 114-42 E.

Conducting surface patrol Northwest of Kangoan Island. Made
7 training dives during the day.

27 July 1945 (13)
Noon: Lat. 5-45 S Long. 112-24 E.

0040 Converted No. 4 F.B.T. into a ballast tank and submerged for
20 minutes to flush it out.
0716 Submerged and conducted submerged patrol Southwest of Bawean
Island. Working on Master Gyro which has been giving us trou-
ble since start of patrol.
2014 Surfaced and set course Westward. Sent message to BRILL and
CABRILLA requesting that they give us what 5" ammunition they
have remaining when they depart their area.

28 July 1945 (14)
Noon: Lat. 5-39 S Long. 110-36 E.

Conducting surface patrol Northeast of Karinoon Islands. At
dark headed West to patrol off Kangoan Islands.

29 July 1945 (15)
Noon: Lat. 6-36 S Long. 114-31 E.

Conducting surface patrol Northwest of Kangoan Island.
1527 Submerged and closed Kangoan Island.
2010 Surfaced and commenced patrol South of Kenirian Island.

- 4 - ENCLOSURE (A)

— page 107 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) THIRD WAR PATROL REPORT.

30 July 1945 (16)
Noon: Lat. 6-19 S Long. 113-25 E.

Conducting surface patrol Northeast of Soerabaja. Sighted
well over a hundred sailboats during the day. Normally we
see about 20 to 40.
1430 Submerged North of Soerabaja, as we are ahead of schedule
on our proposed plans.
1913 Surfaced and set course to close coast West of Soerabaja.
Made radar sweep pass AwarAwar Cape during the evening.

31 July 1945 (17)
Noon: Lat. 6-00 S Long. 112-39 E.

0100 Converted No. 5 F.B.T. and submerged for twenty minutes to
flush it out.
0723 Submerged South of Bawean Island.
2009 Surfaced. Received message from BRILL designating rendezvous
point for ammunition transfer.

1 August 1945 (18)
Noon: Lat. 5-42 S Long. 112-18 E.

Conducting surface patrol North of Bawean Island.
0736 Made trim dive and surfaced 50 minutes later.
0855 Sighted probable periscope. Shifted patrol station Westward
20 miles.
2137 Set course to rendezvous with the BRILL.

2 August 1945 (19)
Noon: Lat. 5-17 S Long. 112-45 E.

0030 Maneuvering to receive ammunition from BRILL. Sea quite
choppy. Both boats lying to in trough of sea, bows on, with
CHUB maneuvering to maintain proper clearance. Using rubber
boat with lines run from it to each submarine. Sea became
so rough that only nine rounds were transferred in two trips,
with two other rounds lost over the side. On third trip boat
started leaking so attempt was abandoned. Net gain was 9
rounds of 5" ammunition.
0207 Stood clear of BRILL and set course Southeast. Conducting
surface patrol during the day. Investigated one sailboat.
1850 Set course to head down towards Soerabaja.

3 August 1945 (20)
Noon: Lat. 6-57 S Long. 115-01 E.

0452 Patrolling Northeast of Soerabaja.
Exchanged calls with HARDHEAD.

- 5 - ENCLOSURE (A)
[STAMP: 10 01324]

— page 108 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) THIRD WAR PATROL REPORT.

1050 Sighted shoal water ahead through high periscope. Identi-
     fied as Karang Takat Reef. We are about 5 miles East of
     our DR position.
1115 Submerged West of Kangean Island.
2002 Surfaced Southwest of Kemirian Island. Exchanged plans
     with HARDHEAD, THOROUGH, TACITURN.

                          4 August 1945 (21)
               Noon: Lat. 7-41 S Long. 114-19 E.

0711 Submerged off Meinderts Reef and closed the Java Coast.
     Made two runs past the large fleet tug that we had beached
     on the 24th of July. Made following observations:

     1. Torpedo net stretched to seaward of tug.
     2. Salvage barge alongside tug inshore.
     3. Japs have commenced to camouflage the tug with grass
        and leaves.

     The camouflage indicates that the operation will take some
     time. An immediate attack is considered unnecessary. De-
     cided to pull out and make careful exact plans. The big
     boss has already congratulated us for destroying this tug,
     so cannot afford to let the Japs make a liar of us.

2000 Surfaced and stood clear to Eastward.

                          5 August 1945 (22)
               Noon: Lat. 7-49 S Long. 114-30 E.

0705 Submerged off Meinderts Reef. During day made careful ex-
     amination of beached tug and the adjacent shore line.

                          OBSERVATIONS

     1. Tug is short distance off shore almost parallel to the
        beach and listed slightly to port. It has been partial-
        ly deceivingly camouflaged. A wire hawser extends from
        bow of tug to a tree on the beach.
     2. The torpedo net extends from shore out to seaward, par-
        allel to port side of tug but does not enclose the stern
        of the tug. The buoys have been camouflaged to resemble
        a grass fence.
     3. Salvage barge alongside inshore has been partially cam-
        ouflaged and protrudes slightly astern of the tug.
     4. Considerable activity on the beach. Apparently Japs and
        natives gathering grass for camouflage.
     5. Observed several neat rows of rectangular huts 2 miles
        Westward which Indonose says is a Jap observation post.

                          - 6 - ENCLOSURE (A)

— page 109 —
CONFIDENTIAL - U.S.S. CHUE (SS 329) THIRD WAR PATROL REPORT.

     6. Fathometer shows good deep water within 1,500 yards of
        the shore.

                       PLAN OF ACTION

     1. Will surface 15 or 20 minutes before sunset; at which
        time the probability of an air patrol should be the
        least and the element of surprise greatest.
     2. Will surface on the batteries, trimmed down, and out-
        side 2,000 yards, with fathometer going steady.
     3. Will make initial, exploratory attack with 40mm only;
        keeping other gun crews standing by below. Thus we
        will have minimum personnel topside in case of a trap,
        and other guns can be manned quickly when wanted.
     4. Plan to destroy barge and discourage any resistance by
        gunfire. Will then move in close and sink some of the
        torpedo net buoys. Next plan to finish off beached tug
        with a torpedo.

1850 Manned stations for Battle Surface. During past half hour
     have observed about one dozen people go ashore and walk up
     the beach.

1903 Surfaced and opened fire with the 40mm at 2,200 yards. Ob-
     served numerous people jump into water and swim for shore.
     Closed in to 700 yards from the barge, at which point we
     killed our headway, as we were encountering intermittent
     but inaccurate small arms fire. Fired 100 rounds of 40mm
     for approximately 90 hits in the salvage barge, making a
     smouldering wreck of it.

1916 In position 350 yards from beach and behind the line of the
     torpedo net buoys. Fired one torpedo on 160 port track,
     720 yard torpedo run. The torpedo hit aft with a terrific
     blast and blew one engine up on dock.

     Started swinging left to open out, believing our work done.
     Called up 20mm crew for anti-personnel coverage during turn
     away. As the smoke cleared away we found that the blast
     of the torpedo had done several things:

     1. Cleared away most of the camouflage.
     2. Completed the sinking of the wooden salvage barge.
     3. Jarred loose another tug which had been moored forward
        of the barge and hidden by camouflage, probably the
        source of the small arms fire. As the second tug drift-
        ed out into view it was soon to be of medium size and
        steel construction (about 200 tons).

                       - 7 -

                                                 ENCLOSURE (A)

— page 110 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) THIRD WAR PATROL REPORT.

Made circle to the left and opened fire with the 40mm.
Closed tug to 500 yards and fired one electric torpedo
which went to left, due to fire control error, and skid-
ded high and dry onto the beach, stopping just short of
a tree. Backed out 600 yards and fired a second torpedo,
which broached and then sank after a 15 second run.

Meanwhile we were still firing 40mm into the tug for 100
percent hits. Small arms return fire now coming from the
beach to the left of the fleet tug. Called up the 5" gun
crew to finish off the second tug.

Twisted around broadside to the tug to bring all guns to
bear at 600 yards. The 20mm sprayed ammunition wildly.
The 5" gun fired our last 16 rounds for 14 hits (misses
due to smoke obscuring target). The 40mm completed firing
a total of 90 rounds into this second tug without a miss.
The impact of the shells drove the tug to the beach where
it settled to the bottom, completely demolished topside.

1950 Secured guns, tubes, and fathometer. Pumped up and stood
clear at 4 engine speed, as this area becomes a blind bomb-
ing zone at 2100 and we have 25 miles to go to be clear.

We are positive that all three targets are completely de-
stroyed. The only things the Japs can salvage are their
anti-torpedo net and one of our torpedoes, which unfortu-
nately beached. No attempt was made to destroy the beached
torpedo due to insufficient light remaining.

The large fleet tug has been identified by P.O.W. as the Ex-
Dutch "GIMAN" (725 tons) built in 1940. It is an exact like-
ness of the British ST-ABBS Class (820 tons). Computations
based on comparative dimensions and draft give a tonnage of
725 for the GIMAN.

                                6 August 1945 (23)
                        Noon: Lat. 7-05 S Long. 117-07 E.

0238 Set course Eastward at 3 engine speed to search for lugger
        reported by HARDHEAD and TACITURN.
0712 Submerged for 20 minutes to flush out No. 5. F.B.T.
1232 Surfaced and exchanged calls with CALIAN.
1500 Abandoned search and set course to return to own area. Be-
        lieve CALIAN must have gotten the lugger.

                                7 August 1945 (24)
                        Noon: Lat. 7-50 S Long. 115-30 E.
Patrolling surface South of Kangean Island.

                                - 8 -                                 ENCLOSURE (A)

— page 111 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) THIRD WAR PATROL REPORT.

0822 C.O. heard aircraft and looked aft and up to see float plane
     coming in fast from astern, almost overhead. Clear the bridge!!!
     J.O.O.D. who had been absorbed in verifying a possible ship
     contact aft looked up to see a black shiny bomb headed his way.
     This bomb and one other cleared the ship by a narrow margin
     and landed close aboard to starboard. Both splashes were ob-
     served by O.O.D. and one lookout. These two bombs were close
     enough that people below heard the splash before the bombs
     detonated. Explosion of the bombs gave us quite a jolt as the
     bridge watch came down the hatch two at a time.

0823 One bomb close aboard as we passed 55 feet.
0823:40 One bomb close aboard as we passed 100 feet.

                                COMMENT

1. At the time we were caught flat footed the bridge watch
   consisted of an O.O.D. fwd, J.O.O.D. aft, 2 forward look-
   outs, 2 after lookouts, and a sun lookout. In addition
   the C.O. was on the bridge for a breath of air.
2. SJ radar was manned and sweeping with no contact. SD radar
   was being keyed at one minute intervals with no contact.
   High periscope watch was manned.
3. It is felt the J.O.O.D. aft was primarily responsible,
   through allowing his attention to be absorbed in verifi-
   cation of a possible ship contact, instead of directing
   the high periscope to verify it.
4. There is no explanation for the fact that neither SD nor
   SJ made contact on the plane at any time during its ap-
   proach.
5. During this emergency the quick thinking and acting of three
   men probably saved the ship and is worthy of high commen-
   dation. In the rush of clearing the bridge the O.O.D. had
   forgotten to sound the diving alarm. BROOKS, Charles, CMoM,
   USN, on the hydraulic manifold grasped the situation, assumed
   the diving alarm to be out, opened all vents and shut the
   main induction while engines were still running. BRUNNER,
   Paul F., MoMMlc, USN, and OLSON, Eric H., MoMMlc, USN, throt-
   tlemen in the engine rooms, on hearing the first two bombs,
   stood by their throttles immediately and watched the induc-
   tion light. When the induction light snapped to shut, they
   stopped and secured their engines immediately.
6. Damage from this bombing was surprisingly minor, principal
   items being the gyro and the SJ radar. These were repaired
   during the day.
7. Believe that enemy planes in the future will have a diffi-
   cult time slipping in on our lookouts. Experience is a
   great teacher, but at times it's a hectic way to learn.

0839 Returned to periscope depth to see if plane was air coverage

                                - 9 -
[STAMP: ENCLOSURE 0132-1]

— page 112 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) THIRD WAR PATROL REPORT.

for a torpedo target. Thought at least the escorts might
come our way. Numerous sweeps revealed nothing but the
plane which hung around closely for over an hour.

1143 Surfaced and notified COD that this spot was not satisfac-
     tory for daytime transfer of ammunition (scheduled for 1500).
1302 Submerged after arranging night rendezvous with COD.
1400 Raised periscope and sighted float plane. He was full field
     in low power. Lowered periscope.
1807 Surfaced and headed for rendezvous.
2110 Went close aboard COD and received 35 rounds of 5" and 48
     rounds of 40mm; passed by Breeches buoy in a most efficient
     manner. Also exchanged nine movies and received a can of
     baking powder.
2230 Parted company with COD.

8 August 1945 (25)
Noon: Lat. 8-01 S Long. 115-13 E.

0705 Submerged and patrolled off North Bali coast.
1957 Surfaced.

9 August 1945 (26)
Noon: Lat. 7-54 S Long. 114-31 E.

0706 Submerged off Meinderts Reef and closed Cape Sodano.
1145 Sighted masts and bridge bearing 000° T headed South along
     coast. Examined and tracked this target for over half an
     hour, having difficulty deciding what he was with foggy
     periscope against the land background. His antics were
     those of a patrol vessel, but thought several times that
     he might be a small coastal vessel.
1220 Manned stations for Battle Surface.
1229 SJ radar gives range of 2,200 yards.
1230 Surfaced and opened fire with 5" and 40mm. Received re-
     turn fire from the target. Both of us far from shore and giv-
     ing the intervening water a rough going over.

Soon found by SJ that the range to the target was 4,500
yards instead of 2,200 yards. With clear binoculars saw
that he was a Sub Chaser (SC51 class) instead of a smaller
craft. (Radar had given a range to nearest land instead
of target before surfacing).

Fortunately our 5" and 40mm got on quickly and scored a
few hits, silencing his return fire except for small arms
or machine gun. Target was maneuvering radically, and
very difficult to hit.

Closed range at 4 engine speed to 2,800 yards, at which

- 10 - ENCLOSURE (A)

— page 113 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) THIRD PATROL REPORT.

point target headed towards us. We swung out to keep range
open and our guns began to really pour him, causing him to
change his mind and start a turn away. Several good hits
caught him as he was broadside to and he sank quickly, leav-
ing only his bridge superstructure and his flag showing where
he settled on an off shore reef.

1245 Secured from battle stations.
1250 Submerged and resumed patrol.

1800 Closed reef to 1,000 yards and examined sunken target. The
     following parts projected above the water:
     1. One 40mm gun mounted well forward and very similar to
        our own.
     2. One 20mm gun mounted just forward of bridge.
     3. Top of bridge, mast, and a few other miscellaneous items
        of superstructure.
     4. Flag mast projecting out of the water, from which the
        Japanese colors waved briskly in the breeze.

1947 Surfaced and closed reef in a fruitless effort to obtain the
     flag. Had planned to approach reef from windward with decks
     awash and let rubber boat out on a long line. Unfortunately
     the wind was strong and the sea choppy. At 700 yards from
     the sunken Sub Chaser our fathometer stopped registering.
     People forward reported that they believed we had struck bot-
     tom twice. We could keep our stern into the wind, but the
     current began to set us into the beach, until we were 560
     yards offshore.
2105 Decided that one craft on this small reef is enough. No use
     getting the flag if we cannot take it away. Started twist-
     ing and backing until clear.
2115 Set course to open out from the coast.
2230 Sent message to BUMPER requesting ammunition.

     Note: Had the C.O. known before surfacing that the target
          mounted a 40mm and a 20mm, he would have let the tar-
          get go by.

                     10 August 1945 (27)
          Noon: Lat. 7-46 S Long. 114-45 E.

0230 Made rendezvous with BUMPER.
0305 BUMPER dashed off to investigate radar contact which turned
     out to be a sailboat.
0314 Crankcase explosion. Slowed to one engine speed. Notified
     BUMPER that British TACITURN and THOROUGH were in this area.
0500 Went close aboard BUMPER and received 10 rounds of 5" and
     16 rounds of 40mm ammunition via rubber boat.
0712 Submerged on sighting fighter plane.
1947 Surfaced.

                     - 11 -

                                               ENCLOSURE (A)

— page 114 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) THIRD WAR PATROL REPORT.

11 August 1945 (28)
Noon: Lat. 8-36 S Long. 115-42 E.

0650 Submerged Northeast of Bali Island and commenced submerged
     transit of Lombok Strait.

1117 Sighted large Sea Truck towed by small tug and escorted by
     a small Picket Boat, South of us and headed Eastward across
     Lombok Strait.

1145 Manned stations for Battle Surface and ordered 40mm to keep
     Picket Boat under fire while 5" worked on the Sea Truck.

1203 Surfaced and opened fire at 4,200 yards and closed range to
     2,200 yards on 3 engines.

     The 40mm jammed on first loading and the Picket Boat head-
     ed towards us firing small arms until the 40 finally start-
     ed working and made things too hot for him. About 60 rounds
     of 40mm were fired at this small elusive craft for 5 hits,
     starting one fire which was extinguished. The Picket Boat
     was only slightly damaged but thoroughly discouraged from
     interference.

     The 5" gun fired 13 rounds for 4 hits in the Sea Truck and
     the 40mm added 4 hits, leaving the Sea Truck listed towards
     about 30 degrees and sinking.

1221 Commenced firing our last few rounds of 40mm at the tug
     which had slipped the tow and is headed away.

1223 Lookout sighted plane which disappeared in cloud bank. Have
     5 rounds of 40mm remaining and ordered them fired before
     diving.

1224 O.O.D. sighted plane again coming out of clouds and headed
     towards. Cleared bridge and submerged immediately, leaving
     two unfired rounds in the 40mm gun.

1250 Returned to periscope depth and observed Sea Truck listed
     to port 60 degrees, trailing an oil slick and with approx-
     imately 100 oil drums floating in the vicinity.
     Sea Truck now lying almost on its side, 75 degree angle,
     with very little freeboard, and drifting through strait to
     seaward.

1320 Sighted 2 engine bomber, full field in low power, banking
     towards. During the ensuing two hours either the bomber,
     or a fighter, or an obsolete land biplane was in sight on
     every look, covering our area thoroughly, and preventing
     further observation of the Sea Truck.

1330 The Sea Truck is considered sunk or destroyed. Even if the
     unsalvagable hulk had continued to float for several hours,
     it would have drifted through the strait and out to sea with
     the strong southerly current prevailing in the strait.

- 12 -                                        ENCLOSURE (A)

— page 115 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) THIRD PATROL REPORT.

12 August 1945 (30)
Noon: Lat. 00-41 S Long. 114-21 E.

0136 Entered Gradjagan Bay and commenced visual and radar search
       for anchored targets.
0310 Stood clear, having found the bay empty.
0707 Submerged and conducted close inshore patrol off Gradjagan
       Bay and Cape Bantenan during day.
1921 Surfaced and set course for Fremantle in accordance with
       operation order. Sent serial 4 to ComTaskFor SEVENTH OND.

14 August 1945 (31)
Noon: Lat. 12-51 S Long. 115-01 E.

15 August 1945 (32)
Noon: Lat. 18-47 S Long. 113-31 E.
Received welcome news of Japanese surrender.

16 August 1945 (33)
Noon: Lat. 25-14 S Long. 112-30 E.

1340 Stopped for half an hour and jumped out No. 4 main motor,
       due to sparking.

17 August 1945 (34)
Noon: Lat. 30-42 S Long. 114-36 E.

0016 Stopped for half an hour and jumped out No. 3 main motor,
       due to sparking.
1920 Arrived Fremantle, West Australia.

- 13 -
10 C1324
ENCLOSURE (A)

— page 116 —
CONFIDENTIAL - U.S.S. CHUE (SS 329) THIRD WAR PATROL REPORT.

(C) WEATHER

Enroute area the sky was overcast the entire time. However,
while in area, the weather encountered was as per Sailing Directions
mild and clear.

(D) TIDAL INFORMATION

Currents held closely to those indicated on various H.O. charts
and Sailing Directions. A current of 1.5 knots, 100° T set was experi-
enced off Cape Bantenan on the S.W. coast of Java, a current of 4 knots,
180° T set, in Lombok Strait.

(D) NAVIGATIONAL AIDS

No Comments.

(F) SHIP CONTACTS

| Time No.Date | Lat. Long. | Type(s) | Initial Range | Est. Course Speed | How contacted | Remarks |
|---|---|---|---|---|---|---|
| 1. 1343I 7-24 | 7-46 S 114-21 E | 1. Fleet Tug 2. Small Diesel Tug | 10,000 yds | 300° T 7 kts | Periscope | Destroyed both by Gunfire |
| 2. 1600I 7-25 | 7-05.5 S 115-13 E | 1. Converted DM | 12,000 yds | 090° T 13 kts | JP Sound | Could not close |
| 3. 1905I 8-5 | 7-45 S 114-21 E | 1. Fleet Tug 2. Barge 3. Small Tug | 2,800 yds | On beach | Periscope | See Narrative |
| 4. 1115I 8-9 | 7-52.5 S 114-28.5E | 1. Sub Chaser | 8,000 yds | 180° T 8 kts | Periscope | Sunk by Gunfire |
| 5. 1117I 8-11 | 8-33.6 S 115-46 E | 1. Sea Truck 2. Tug 3. Picket Boat | 6,000 yds | 090° T 5.5 kts | JP Sound | Sunk Sea Truck by Gunfire. Damaged Picket Boat. |

- 14 - ENCLOSURE (A)

— page 117 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) THIRD WAR PATROL REPORT.

ADDITIONAL INFORMATION FOR TARGETS PICKED UP BY SOUND

Depth S/M      Keel     Rel.     Sound     Other Equip.
Water Speed    Depth    Bearing  Equip.    In Use    Frequency

2. 60 F        2.5 kts 66'  225°     JP        QB        17.5 Kcs.
5. 600 F       2.5 kts 66'  10°      JP        QB        17.5 Kcs.

(C) AIRCRAFT CONTACTS

Current trends are discussed under Anti-Submarine measures.
No new types were encountered.

- 15 -                               ENCLOSURE (A)[HANDWRITTEN: 10 01324]

— page 118 —
AIRCRAFT CONTACT NO. 4
CHUB 3rd WAR PATROL

[HANDWRITTEN: ALL CLEAR ON RADAR]

[HANDWRITTEN: PLANE!!]

- 754 -
ENCLOSURE (A)

— page 120 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) THIRD WAR PATROL REPORT.

(H) ATTACK DATA

U.S.S. CHUB (SS 329) TORPEDO ATTACK NO. 1 A PATROL NO. 3
Time 1916 Date 5 Aug. 1945 Lat. 7-46 S Long. 114-24 E.

Target Data - Damage Inflicted

Description: Fleet tug with heavy stack, two masts, high bridge
 and forecastle. Ex-Dutch "GINAH" (725 tons), beached
 and camouflaged with torpedo net to seaward. A sal-
 vage barge and another tug alongside inshore. The
 fleet tug had been previously damaged and left ablaze
 with 46 hits by CHUB 5" gun.

Ships Sunk One fleet type ocean going tug. 725 tons.
or Destroyed:

Ships Damaged: One salvage barge (100 tons), wooden construction. One
 medium tug (200 tons), steel construction. (Note: Final
 destruction above 2 vessels by gun attacks 2 and 3).

Damage Determined by: Torpedo hit aft with terrific explosion, blasting
 hole up through after section of ship, leaving one engine
 visible topside. Ship listed a few more degrees to port
 with no apparent change in draft. Having been previously
 damaged and burned out by 46 hits from 5" gun, this tar-
 get is considered completely destroyed. The medium tug
 and the salvage barge were damaged by shock of explosion.

Target Draft 13'* Course 160 Speed 0 Range 750 (at firing).
 (Normal draft - F.O.)

Own Ship Data

Speed 0 Course 172 Depth Surface Angle 0

Fire Control and Torpedo Data

Type Attack: Day surface attack. Periscope bearings and radar ranges.
 One Mk 18 fired from tube No. 4. Large track accepted in
 order to fire behind torpedo net. Torpedo did not broach.

- 16 - ENCLOSURE (A)

— page 121 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) THIRD WAR PATROL REPORT.

U.S.S. CHUB (SS 329) TORPEDO ATTACK NO. 1B-1C PATROL NO. 3
Time 1929 Date 5 Aug. 1945 Lat. 7-46 S Long. 114-24 E.

Target Data - Damage Inflicted

Description: Medium tug, steel construction, 200 tons. Had been
tied up alongside tug of torpedo attack 1A and hidden
by camouflage. Torpedo explosion had jarred it out
to seaward with consequent damage.

Ships Sunk: None.

Ships Damaged: None.

Damage Determined by:

Target Draft 5' Course 150 Speed 0 Range 500-600

Own Ship Data

Speed 0 Course 192 184 Depth Surface Angle 0

Fire Control and Torpedo Data

Type Attack: Day surface attack. Periscope bearings and radar ranges.
Two Mk 18 torpedoes were fired. First torpedo missed to
left, due to fire control error and ran up onto the beach.
The second broached then sank after about a 15 second run.
(It may have gone erratic and been caught in torpedo net).

- 17 -
[STAMP: 10 01324]
ENCLOSURE (A)

— page 122 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) THIRD WAR PATROL REPORT.

TORPEDO ATTACK NO. 1

| | A. | B. | C. |
|---|---|---|---|
| Tubes Fired | No. 4 | No. 3 | No. 1 |
| Track Angle | 160 P | 150 P | 150 P |
| Gyro Angle | 007.5 | 347.5 | 357.5 |
| Depth Set | 2 | 2 | 2 |
| Speed Used | 27.5 | 27.5 | 27.5 |
| Hit or Miss | Hit | Miss | Miss |
| Erratic | No | No | Yes |
| Mark Torpedo | 18-2 | 18-1 | 18-1 |
| Serial No. | 53191 | 54130 | 55539 |
| Mark Exploder | 8-7 | 8-5 | 8-5 |
| Serial No. | 16445 | 11114 | 8998 |
| Actuation Set | Contact | Contact | Contact |
| Mark Warhead | 18-2 | 18-2 | 18-2 |
| Serial No. | 5431 | 5396 | 5244 |
| Explosive | Torpex 2 | Torpex 2 | Torpex 2 |
| Firing Interval | | | |
| Type Spread | None | Single Shots | |
| Length of Run | 720 yds | 500 yds | 600 yds |
| Duration of Run | 43 sec. | | |
| Sea Conditions | Choppy | Choppy | Choppy |
| Electrolytic Temp. | 83 | 83 | 83 |
| Injection Temp. | 82 | 82 | 82 |
| Overhaul Activity | U.S.S. HOWARD W. GILMORE (AS-16) | | |

- 18 -
ENCLOSURE (A)

— page 123 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) THIRD WAR PATROL REPORT.

U.S.S. CHUB (SS 329) GUN ATTACK NO. [HANDWRITTEN: 1] PATROL NO. [HANDWRITTEN: 3]
Time [HANDWRITTEN: 1440] Date [HANDWRITTEN: 24 July 1945] Lat. [HANDWRITTEN: 7-46 S] Long. [HANDWRITTEN: 114-24 E]

Target Data - Damage Inflicted

Sunk or | One Diesel tug, 100 tons, wooden construction.
Destroyed: |

Damaged or | One fleet type tug, 725 tons, Ex-Dutch "GINAH". Steel
Probably | construction. Identified by P.O.'s.
Destroyed: | (Destruction of this tug completed by torpedo attack No.1).

Damage Deter- | Observed 46 hits from 5" gun in large fleet tug and 50
mined by: | hits from 40mm gun in the small Diesel tug. The small
| tug blazed briskly for 4 hours. The large tug blazed
| and smouldered intermittently for four hours. The
| small tug, being of wooden construction, is considered
| completely destroyed by fire. The large tug is con-
| sidered heavily damaged by shell hits and by fire.

Details of Action

Made battle surface on target's quarter and opened fire with
5" gun at initial range of 5,000 yards. Target maneuvered radically
and we scored no hits until the range had closed to 3,500 yards.
Whereupon both tugs beached themselves and abandoned ship. Closed
range to 1,700 yards and made two runs parallel to the beach at 7
knots, firing the 5" gun at the large fleet tug which was built of
steel, and firing the 40mm at the small Diesel tug, which was made
of wood. Scored 46 hits with 5" gun in the large tug and 50 hits
with 40mm in the small tug; leaving them both ablaze before being
forced down by a plane. While submerged observed fires for 4 hours
before surfacing.

Expended: 113 rounds 5" for 46 hits, 212 rounds 40mm for 50 hits.
Fire Control: Periscope spotting for 5". Local spotting for 40mm.
Notes: One misfire and one premature on 5" gun.

U.S.S. CHUB (SS 329) GUN ATTACK NO. [HANDWRITTEN: 2] PATROL NO. [HANDWRITTEN: 3]
Time [HANDWRITTEN: 1903] Date [HANDWRITTEN: 5 Aug. 1945] Lat. [HANDWRITTEN: 7-46 S] Long. [HANDWRITTEN: 114-24 E]

Target Data - Damage Inflicted

Sunk or | One salvage barge, rounded stern, large deck house
Destroyed: | aft, freshly painted, wooden construction. C.O.'s
| best estimate 100 tons.

- 19 -

ENCLOSURE (A)

— page 124 —
CONFIDENTIAL - U.S.S. CHU (SS 329) THIRD WAR PATROL REPORT.

Determined
Damage by: Observed approximately 90 hits from 40mm gun, setting
             barge on fire and demolishing its topside. Later the
             barge was observed to sink.

                       Details of Action

     The salvage barge was tied up alongside of beached fleet tug
with stern protruding aft. Surfaced and opened fire with 40mm at
2,200 yards, local control and spotting. Fired 100 rounds for approxi-
mately 90 hits in the barge, setting the barge afire, demolishing the
topside, and starting it to sink. Torpedo attacks Nos. 1A, 1B, 1C,
followed, during which time the barge sank.

U.S.S. CHU (SS 329) GUN ATTACK NO. 3 PATROL NO. 3
Time 1935 Date 5 Aug. 1945 Lat. 7-46 S Long. 114-24 E.

                       Target Data - Damage Inflicted

Sunk or        One medium sized tug, steel construction. C.O.'s best
Destroyed:     estimate 200 tons.

Determined     Observed 14 hits with 5" gun and 90 hits with 40mm gun
Damage by:     in this tug. Observed tug settle to the bottom, heavily
               battered and smouldering topside.

                       Details of Action

     This tug had been moored alongside the beached fleet tug and
hidden by camouflage. The explosion of the torpedo hit in the fleet
tug had jarred this tug loose from its moorings and into open view.
Two torpedoes were fired at this second tug with negative results,
due to fire control error and erratic performance. The submarine
was then twisted around broadside to the tug at 600 yards to bring
all guns to bear. Fired 16 rounds of 5" for 14 hits in the tug.
Misses were due to smoke obscuring the target. Fired 90 rounds of
40mm for 100 percent hits in the tug. The impact of the shells
drove the tug towards the beach where it was observed to settle to
the bottom, heavily demolished topside. Had one loading jam in the
40mm gun. Fired 164 rounds of 20mm for anti-personnel coverage.

- 20 - ENCLOSURE (A)

— page 125 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) THIRD WAR PATROL REPORT.

U.S.S. CHUB (SS 329) GUN ATTACK NO. 4 PATROL NO. 3
Time 1230 Date 9 Aug. 1945 Lat.7-52.5 S Long. 114-28 E.

Target Data - Damage Inflicted

Sunk: One Sub Chaser (SC51 Class), 170 tons, armed with 40mm,
20mm, and depth charges.

Determined Observed target sink.
Damage by:

Details of Action

Surfaced and opened fire with 40mm and 5" at range of 4,500
yards. Received 40mm return fire from target until we scored our
first hits. Received only small arms return fire thereafter. Tar-
get was maneuvering radically and difficult to hit. Closed range
on 4 engines to 2,000 yards. Target headed toward us but 5" and 40mm
began to really batter him as he headed in, changing his mind and
forcing him to turn away again. Several good hits caught him when
he was broadside to and he sank quickly in shoal water leaving only
the following parts showing above water: Top of bridge, 40mm and
20mm guns, miscellaneous superstructure aft of bridge, foremast, and
mainmast with flag waving briskly in the breeze. Expended 29 rounds
5" for 8 hits, and 49 rounds 40mm for 12 hits.

U.S.S. CHUB (SS 329) GUN ATTACK NO. 5 PATROL NO. 3
Time 1203 Date 11 Aug 1945 Lat.6-33.6 S Long. 115-46 E.

Target Data - Damage Inflicted

Sunk: One Sea Truck, 200 tons (C.O.'s best estimate).

Damaged: One Picket Boat escort armed only with machine guns,
small arms, and depth charges. 75 tons (C.O.'s best
estimate).

Determined Observed 4 hits from 5" and 4 hits from 40mm in Sea
Damage by: Truck leaving it in a sinking condition listed 75
degrees to port with very little freeboard. Observed
5 hits from 40mm in the Picket Boat, starting one fire
which was extinguished.

- 21 - ENCLOSURE (A)

— page 126 —
CONFIDENTIAL - U.S.S. CHU (SS 329) THIRD WAR PATROL REPORT.

Details of Action

Target group consisted of a large Sea Truck, towed by a small
tug, and escorted by a Picket Boat. Surfaced and opened fire at
4,200 yards; firing 5" at the Sea Truck and 40mm at the Picket Boat.
The 40mm jammed on first loading and the Picket Boat headed towards,
firing small arms, until 40mm finally got to working and hit him.
Five hits from 60 rounds of 40mm did little damage to the Picket Boat
but did drive him off. Closed range to 2,200 yards on the Sea Truck.
The 5" fired a total of 13 rounds for 4 hits in the Sea Truck and the
40mm added 4 more, leaving it in a sinking condition. Fired last few
rounds of 40mm at the tug, which had cut his tow, before being forced
down by a plane. No hits in the tug. Total 40mm expended 75 rounds
for 9 hits; the 40mm scored only a small percentage of hits; but it
accomplished the purpose intended - that of keeping the Picket Boat
at a safe range, while the 5" worked on the Sea Truck. The low percent-
age of 40mm hits is explained by loss of communications between peri-
scope and gun.

(I) MINES

None Encountered.

(J) ANTI-SUBMARINE MEASURES AND EVASION TACTICS

Float plane air patrol and float plane coverage for shipping
is the principal anti-submarine measure employed and also the most
effective. Float plane air patrols are occasionally supplemented by
2 engine bombers, fighters, and obsolete land planes with fixed land-
ing gear. In areas where submarine attack may be expected, shipping
will normally have air coverage and surface escorts.

Based on observations from two patrols in the Java Sea, it is
believed that air patrols when not escorting, normally come out a-
round 0730 to 0900 in the morning and returns to base around 1100 to
1130 for lunch. They come out again around 1330 and return to base
around 1730. This schedule varies and should be considered only a
rough guide of what to expect. When flying air coverage for ship-
ping the planes normally stay with the ships throughout daylight, ap-
parently being relieved by another plane when necessary to return to
base.

The Submarine Chaser we sank on 9 August off Cape Sedano ap-
peared to be on anti-submarine patrol. It is quite probable that he
was looking for us as he was contacted only a few miles from the
point where we had destroyed the three tugs and the salvage barge.

- 22 -
ENCLOSURE (A)

— page 127 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) THIRD WAR PATROL REPORT.

Then sighted he was rounding Cape Sedano at good speed, but on arrival
in our vicinity he slowed to bare steerage way.

Unfortunately for him, a combination of foggy periscopes, land
background, and an inaccurate ST radar range led to his being mistaken
for a smaller target at half the actual range. If this Sub Chaser was
actually in search of the CHUB, the survivors are entitled to file an
honorable report of success.

(K) MAJOR DEFECTS AND DAMAGE

HULL AND MACHINERY

The only major casualty to occur was the failure of the
Kleinschmidt Vapor Compressor Evaporators to distill battery water
from sea water during the entire patrol and finally the failure to
make fresh water under normal operating procedure.

The evaporators have now approximately 1000 hours of operation,
with the original set of tube coils. They have been flushed with acid
three times, the first time being before this vessel's first patrol,
the second time during the refit after the first patrol and the third
time during the refit after the second patrol.

During this vessel's second patrol the pressure on the stills
showed a sudden increase after approximately 100 hours of operation.
This continued until the number 1 unit had to be secured entirely.
During the refit new coils were asked for but were not received. Mean-
while they were flushed with acid and inspected. The water was tested
and was found to be satisfactory for battery water, but five days
after the start of the patrol the evaporators would not make battery
water from sea water. So fresh water had to be redistilled, thus in-
creasing the consumption of fresh water and overloading the units.
The pressure on both units continued to rise until the prospect of
taking the number 2 unit down at sea and sealing the tube coils arose,
but by trying every method of operation it was finally kept operating
by keeping the by-pass slightly cracked. This cut down on its capacity
but saved us the necessity of overhauling the unit at sea.

It is requested that new tube coils be installed during the
refit.

ORDNANCE AND GUNNERY:

No major defects or damage.

- 23 -

ENCLOSURE (A)

— page 128 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) THIRD WAR PATROL REPORT.

(L) RADIO

DEFECTS:
None Noted.

RECEPTION, TRANSMISSIONS AND REMARKS:
Reception of NPT1 was good throughout patrol. The frequencies
used while in area north of Java were 4370 Kcs. and 9250 Kcs. For the
two days off the South coast of Java it was necessary to change to
12630 Kcs; the other two being very weak.

The lifeguard frequency of 4475 Kcs. was guarded during search
for downed aviators with good results using CW transmission.

VHF communication was good with surface ships and planes during
final training period and search for aviators, planes contacted as far
as 15 miles. Reception of other submarine's transmissions during ren-
dezvous was very poor being undependable at ranges greater than 1,000
yards. The other submarine could hear us and sometimes his transmis-
sion was picked up on our APR at ranges greater than 1,000 yards. The
fault must be in our receiver.

The WOLFPAC frequencies were guarded continuously in area with
good results.

Four ship to shore transmissions were made during the patrol.
The first and third were received for by NPT1 on 4235 Kcs, the second
and fourth by VJ on 4235 Kcs.

(M) RADAR

MODEL SJ-1
OPERATION:
The operation of the SJ during this patrol was very good with
normal maximum ranges obtained.

In one instance, however, two enemy light patrol planes got
in close enough to bomb the CHUB on the surface with no contact on
the SJ or the SD. Both of these equipments were known to be in nor-
mal operating condition at the time and no explanation can be offered
for this failure. Experienced operators were manning both equipments.

- 24 - ENCLOSURE (A)

— page 129 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) THIRD PATROL REPORT.

It is possible the planes were in that sector aft in which the SJ is
blanked by the SD mast or possibly the operator was just not on his
toes.

MATERIAL AND MAINTENANCE:

During this patrol the SJ was secured during daylight whenever
visibility conditions permitted. This allowed the equipment to cool
(in this installation the gear is too hot to touch after 36 hours oper-
ation) and also allowed time for a system of thorough routine main-
tenance. It is believed that the excellent material performance of
the SJ with only 15 minutes lost operation is a result of this system.

Normal tube replacements were made. All but one of which was
found during the times when the equipment was secured.

During a close bombing the Transmitter and Regulated Rectifier
went out due to tube failures. The lower (1 & 2) collector rings on
the Feeder Unit were jolted together and forced against the feeder
base. These put the Range Indicator lobe separation unit out of com-
mission but it wasn't considered advisable to remove the Feeder Unit
to effect the necessary repairs.

RADAR SD-5

The performance of the SD was good and normal ranges were ob-
tained. It is believed that the planes mentioned under SJ were too
low to be picked up by SD.

The SD was keyed at one minute intervals while on the surface.

MATERIAL TROUBLES:

Shorted 801A's in transmitter. No sweeps on indicator - shorted
synch pulse cable. Intermittent sweeps on indicator - broken sweep
generator lead on range selector switch.

RADAR ST:

The operation of the ST was very satisfactory, and gave very
little trouble. Ranges of 24,000 yards were obtained on 1,500 foot
land with a three foot exposure.

A little trouble was experienced with the B.O. tuning drift-
ing but this was checked often and crystal current readjusted.

The only material troubles were a bad crystal and broken wave
guide window. The broken window does not seem to affect the ranges
obtainable.

- 25 -
ENCLOSURE (A)

— page 130 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) THIRD WAR PATROL REPORT.

Some means should be provided for readily replacing these
windows and they should be of thicker, less fragile material.

(N) SONAR GEAR AND SOUND CONDITIONS

The performance of all sound equipment was satisfactory and
material troubles were few.

The JF in one instance of tracking gave bearings apparently
10 degrees off from the periscope. The equipment checks normal on
the topside test oscillator but will be given a thorough check dur-
ing refit.

A hydraulic knock developed in the QB sound shaft during the
latter part of the patrol.

(O) DENSITY LAYERS

The BT cards showed consistent isothermal water throughout
the area. In and around Lombok Straits the usual shifting and un-
predictable gradients and temperatures were noted.

The familiar Java fish noises were frequent ranging from
base to soprano and heavy slow tankers to fast speedboats.

(P) HEALTH, FOOD, AND HABITABILITY

HEALTH:

The health of the crew as a whole was excellent. There were
no communicable diseases during the run.

FOOD:

The food was of good quality, ample in quantity and well pre-
pared.

HABITABILITY:

The habitability throughout the entire patrol was excellent.

- 26 - ENCLOSURE (A)

— page 131 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) THIRD WAR PATROL REPORT.

(Q) PERSONNEL

(a) Number of men detached after previous patrol19
(b) Number of men on board during patrol80
(c) Number of men qualified at start of patrol56
(d) Number of men qualified at end of patrol71
(e) Number of men unqualified making first patrol14

The performance of both officers and enlisted men during the
patrol was excellent.

It has been noted that the big weakness amongst new men re-
porting aboard after each refit is their lack of schooling as helms-
men. Apparently they are not given any instructions in this phase
at the Submarine School as they have no idea of the terminology or
what the job consists of.

(R) MILES STEAMED - FUEL USED

Base to area                                988 miles           14,465 gallons
In area                                     5358 miles          71,492 gallons
Area to base                                1487 miles          23,470 gallons

(S) DURATION

Days enroute to area3
Days in area26
Days enroute to base5
Days submerged14

(T) FACTORS OF ENDURANCE REMAINING

TORPEDOES           FUEL            PROVISIONS          PERSONNEL FACTOR

19 & 3              8,200 gals      20                  14

Limiting factor this patrol: Terminated by operation order.

(U) COMMUNICATION, RADAR, AND SONAR COUNTERMEASURES

COMMUNICATION COUNTERMEASURES:

There was some enemy interference on the WOLFF.C frequencies
[HANDWRITTEN: 10 01324]

- 27 -

— page 132 —
CONFIDENTIAL - U.S.S. CHUB (SS 329) THIRD WAR PATROL REPORT.
but none of it was effective in jamming the signal.
No enemy signals were intercepted.

RADAR COUNTERMEASURES:
     None Encountered.

SONAR COUNTERMEASURES:
     None Encountered.

(V) REMARKS

The directives of Commander Submarines, SEVENTH FLEET con-
fidential letter W22-71/113-1 Serial 0243 of 2 February 1945 have
been complied with.

The end of this patrol leaves us all groping around in the
dark. The news of the Japanese surrender came as a most welcome
surprise to all hands. After almost four years war the idea of
peaceful pursuits and peace time training seems rather strange. We
all look forward to the future with the utmost curiosity. The Com-
manding Officer is all set for the first stop forward. He will go
over to a certain house in Perth and pick up a couple of suits of
civilian clothes that he left there in 1942; at a time when there
was no room for them on a submarine, and such clothes looked to be
out of fashion for a long time to come.

ADDITIONAL MATERIAL DEFECTS

While enroute Fremantle heavy sparking developed in Number
3 and 4 main motors. Analysis indicates that the close bombing of
7 August had probably loosened the brush rigging assemblies; but the
trouble did not show up until heavy seas were encountered while en-
route Fremantle. Four engine speed was used in smooth seas with no
indications of trouble for two days. During the evening of the 15th
the sea became rough and No. 4 motor began to spark slightly. The
sparking on this motor remained about the same for about 12 hours,
then began to increase. At 1340 the 16th No. 4 motor was jumped
out to prevent possible damage. By midnight of the 16th No. 3 motor
had started to spark in a manner similar to No. 4. This motor was
also jumped out and propulsion continued on Nos. 1 and 2 motors.
All running done on the 4 motors during this patrol was at less than
80 percent power.

- 28 -
ENCLOSURE (A)

— page 133 —
FC5-30/A16-3
Serial: 0156
C-O-N-F-I-D-E-N-T-I-A-L

FIRST ENDORSEMENT to
U.S.S. CHUB (SS329) -
Report of Third War Patrol.

From: The Commander Submarine Squadron THIRTY.
To : (1) The Commander Submarines, SEVENTH FLEET.
Via : (2) The Commander SEVENTH FLEET.

Subject: U.S.S. CHUB (SS329) - Report of Third War Patrol.

1. The third war patrol of the U.S.S. CHUB (SS329) under the
command of Commander C. D. RHYMES, Jr., U. S. Navy, was conducted in the
JAVA SEA. The patrol was of thirty-four days duration with twenty-six days
spent in the area. A series of 5 aggressive successful gun actions were
fought.

2. On 24 July, the CHUB attacked with divided fire a fleet tug
with 5" and a small diesel tug with 40MM. Both were driven aground in a
sinking condition. CHUB withdrew from the beach at high speed and only 5
minutes after the completion of attack was forced down and bombed by an enemy
plane.

3. On 4 August, the CHUB reconnoitered submerged close to the
beach where she had driven the large tug aground 11 days before. Jap salvage
operations were observed. This 750 ton tug had been hit with 46 rounds of
5" ammunition. Just prior to sunset CHUB surfaced, closed the beach to 350
yards, and completed destruction of the tug by firing a torpedo from behind
an anti-torpedo net which had been rigged to seaward. Two more torpedoes
were fired at a small tug alongside the large cripple, but both missed. One
salvage barge and the small tug were demolished by gunfire. CHUB received
return small arms fire from the small tug and the beach during this engage-
ment of 47 minutes duration.

4. On 7 August, the CHUB was closely bombed by a plane which
caught her unawares. It is interesting to note that the OOD saw both bombs
hit the water. About one minute later the first exploded as CHUB passed
55 feet. 40 seconds after that the second bomb exploded as CHUB passed 100
feet. This first hand information, obtained the hard way, on Jap bombing
technique, would have been most useful had the war continued.

5. On 10 August, the CHUB battle surfaced in shoal water on what
was thought to be a smaller vessel and engaged a Jap subchaser in gun battle.
The Subchaser's return fire was quickly silenced by the deadly fire of CHUB
and SC sank at the conclusion of 15 minutes action.

6. A final gun action was fought on 11 August against a tug
towing a sea truck escorted by a picket boat. The picket boat and tug were
hit and the sea truck destroyed. After 20 minutes action CHUB was forced to
break off and submerge on plane contact.

- 1 - SUBMARINE SQUADRON THIRTY
Mlk
Care Fleet Post Office
San Francisco, California
20 August 1945.

— page 134 —
FC5-30/A16-3
Serial: 0156
C-O-N-F-I-D-E-N-T-I-A-L
Subject: U.S.S. CHUB (SS329) - Report of Third War Patrol.

SUBMARINE SQUADRON THIRTY
Hlk
Care of Fleet Post Office
San Francisco, California
20 August 1945.

7.
The CHUB arrived with all hands in excellent spirits with the
satisfaction of knowing she had aided materially in bringing the enemy to his
knees. Material condition is good except for 2 main motors which need close
inspection to determine the extent of repairs necessary.

8.
The Squadron Commander heartily welcomes the first boat of
SubDiv 301 to return to port on conclusion of the war and congratulates the
Commanding Officer, officers, and crew on their straight shooting, hard
hitting patrol.

[SIGNATURE: J. Smith]
SMITH.

— page 135 —
F24-71/A16-3
UNITED STATES NAVY 11/dn
Serial 0561-A [HANDWRITTEN: CONFIDENTIAL]
C-O-N-F-I-D-E-N-T-I-A-L 11 September 1945

SECOND ENDORSEMENT to:
USS CHUB Conf. Ltr. A16-3,
Serial (075) of 17 August,
1945, Report of Third War
Patrol.

Subject: U.S.S. CHUB (SS329) - Report of Third War Patrol
(15 July to 17 August, 1945).

— page 136 —
FE24-71/A16-3                               UNITED STATES NAVY
                                                               11/dn
Serial 0561-A
[STAMP: C-O-N-F-I-D-E-N-T-I-A-L]
                                                               11 September 1945

SECOND ENDORSEMENT to:
USS CHUB Conf. Ltr. A16-3,
Serial (075) of 17 August,
1945. Report of Third 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. CHUB (SS329) - Report of Third War Patrol
             (15 July to 17 August, 1945).

             1. The Third War Patrol of the CHUB was conducted in the
JAVA SEA under the command of Commander C. D. RHYMES, Jr., U.S.N.

             2. The CHUB exploited her area to the fullest extent and
found targets enough to keep her gun's crew busy in five gun ac-
tions. One large fleet type tug and a subchaser returned fire,
but without inflicting damage on the CHUB. One torpedo was used to
apply the coup de grace to the large tug which had previously ab-
sorbed numerous 5 inch and 40 millimeter hits.

             3. All attacks were made in shallow water. They were
well planned and aggressively executed. CHUB had a very narrow
escape when she was caught on the surface by a previously unde-
tected plane and closely bombed. Fortunately only minor damage
was sustained.

             4. The award of the Submarine Combat Insignia for this
patrol is authorized.

             5. The Force Commander congratulates the Commanding Of-
ficer, Officers and Crew of the CHUB on the completion of this
aggressive successful patrol and on their safe return to port.
Impressive damage to the enemy was inflicted.

[STAMP: COMMANDER SEVENTH FLEET]
[STAMP: 1* 27 SEP 1945]
[HANDWRITTEN: 1355]
                               S-U-N-K

             Fleet Tug (Ex-Dutch GILLEH) (EC) | 725 Tons
             Diesel Tug                      | 100 Tons
             Salvage Barge                   | 100 Tons
             Medium Tug                      | 200 Tons
             SC-51 Subchaser (EC)            | 170 Tons
             Sea Truck                       | 200 Tons
                                       Total | 1,495 Tons
                                         - 1 -

— page 137 —
UNITED STATES FLEET                                RE. NO [HANDWRITTEN: 0446]
COMMANDER SEVENTH FLEET                               R. S. NO [HANDWRITTEN: 10] [HANDWRITTEN: 01324]
                                                      REG. SHEET NO [HANDWRITTEN: 110]

A16-3(P-3-2/Sw)
Serial: [HANDWRITTEN: 0345]

CONFIDENTIAL                                          [STAMP: 10 OCT 1945]

THIRD ENDORSEMENT to:
USS CHUB Conf. Ltr. A16-3,
Serial (075) of 17 August
1945. Report of Third War
Patrol.

From:                                                 Commander Seventh Fleet.
To :                                                  Commander-in-Chief, United States Fleet.

Subject:                                              U.S.S. CHUB (SS329) - Report of Third War Patrol
                                                      (18 July to 13 August, 1945).

1.                                                    Forwarded.

                                                      [SIGNATURE: J. H. Long]
                                                      J. H. LONG
                                                      By direction

[HANDWRITTEN: 10-23X]
[HANDWRITTEN: 0900 10 23]

— page 138 —
END OF REEL
JOB NO. [HANDWRITTEN: F 108]
[HANDWRITTEN: AR 116-78]

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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

D-52264