U.S.S. REDFIN (SS-272) — war patrol report SS-272_REDFIN.pdf

— page 3 —
[HANDWRITTEN: 2nd Copy]

U.S.S. REDFIN(SS272)
c/o Fleet Post Office
San Francisco, Calif.

SS272/A12-1
Serial 01
[STAMP: DECLASSIFIED]

17 February 1944.

From: The Commanding Officer, U.S.S. REDFIN.
To : The Commander in Chief, United States Fleet.
Via : Official Channels.

Subject: U.S.S. REDFIN - Report of War Patrol
Number One.

Enclosure: (A) Subject report.

1. Enclosure (A), covering the first war
patrol of this vessel conducted in the South China Sea
during the period 4 January 1944 to 17 February 1944
is forwarded herewith.

[SIGNATURE: R. D. King]
R. D. KING.

DECLASSIFIED ART. 0445, OPNAVINST 5510.1C.
BY OP-9B9C DATE [HANDWRITTEN: 6/1/22]
[STAMP: DECLASSIFIED]

[HANDWRITTEN: FILMED]
[HANDWRITTEN: 67740]

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U.S.S. REDFIN.

S272/A12-1
Serial 01

CONFIDENTIAL

Report of First War Patrol from 4 January 1944
to 17 February 1944.

(A) PROLOGUE

August 29,1943. Completed by Manitowoc Shipbuilding Company,
Manitowoc, Wisconsin.

August 31,1943. Commissioned.

August 31 - September 26, 1943. Conducted personnel training
and builders trials in Lake Michigan.

September 26 - October 4,1943. Made transit from Lake
Michigan to New Orleans, La.

October 4 - October 9, 1943. Loaded stores, ammunition,
torpedoes and fuel at New Orleans. Ship was flashed during
this period.

October 9 - October 14,1943. Passage from New Orleans to
Panama.

October 14 - November 21,1943. Conducted contract torpedo
trials, preliminary and final training for war under Commander
Panama Sea Frontier. During this period thirty contract
torpedoes were fired. Twenty-two torpedoes were fired for
training. The 4"/50 cal. gun was fired at short range,
spotting, long range, night and a special bombardment practice.
Ship was flashed again.

The training received at Panama was excellent. Every
phase of submarine work was gone into thoroughly. If a larger
training area and two escorts were available at Panama so that
submarines in training could make end around chases on an es-
corted target it is believed they would be greatly benefited
on their first patrol.

November 21,1943. Departed Panama for Brisbane, Australia.

November 23,1943. Arrived Galapagos Islands, fueled and
departed same day.

December 8, 1943. Received despatch from CTF-72 changing
destination from Brisbane, Australia to Milne Bay.

-1-

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December 18, 1943. Arrived Milne Bay.

December 18 - 25, 1943. Upkeep at Milne Bay.

December 25 - 29, 1943. Underway for training under direct-
ion of ComSubDiv-82.

December 29, 1943 - January 3, 1944. Passage from training
area to Darwin, Australia including transit of Torres Strait.

January 3, 1944. Arrived Darwin, Australia. Representative
of CTF-71 was waiting with orders for patrol. Fueled to
capacity.

INSTRUCTIONS FOR FIRST WAR PATROL

When directed about 4 January 1944, depart DARWIN
AUSTRALIA and proceed via EAST of TIMOR, BANDA SEA, MOLUKKA
PASSAGE and SIBUTU PASSAGE, and MINDORO STRAIT, to the SOUTH
CHINA SEA. Patrol area between Latitudes 14°-15' North and
17°-30' North and Longitudes 108° East to 117°-30' East for a
period of about 20 days. Conduct offensive patrol against all
enemy ships encountered.
Depart patrol area at dark 5 February 1944 and return to
FREMANTLE via MINDORO STRAIT, SIBUTU PASSAGE, MAKASSAR STRAIT,
and LOMBOK STRAIT.

(B) NARRATIVE

All times How.

4 JANUARY 1944 (1st DAY)

0700 Underway from Darwin, Australia.

0930 Cleared outer bouys.

0937 Made trim dive.

0945 Commenced submerged operations with RAN Motor Launches.

1100 Completed exercises, surfaced and set course 280 T.

2136 Set course for Babar Pass.

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CONFIDENTIAL

                                                                U.S.S. REDFIN.

                                          5 JANUARY 1944 (2nd DAY)
Underway on surface.
1031      Entered Babar Pass.
1200      Cleared Babar Pass.

                                          6 JANUARY 1944 (3rd DAY)
Underway on surface.

                                          7 JANUARY 1944 (4th DAY)
Underway on surface.
2345      Entered Bangka Pass.

                                          8 JANUARY 1944 (5th DAY)
Underway on surface.
0100      Cleared Bangka Pass.
1200      OOD sighted small unidentified ship in haze. Dove.
          Recognized as U.S. Submarine.
          Surfaced and exchanged signals with Bluefish southbound.
1315      Changed course to run down shipping lane.
2000      Reversed course.
2230      Lookout sighted two columns of smoke abeam to port.
          (Ship Contact # 1). Bright moonlight with scattered
          clouds. Commenced tracking and working ahead of smoke.

                                          9 JANUARY 1944 (6th DAY)
Underway on surface working ahead of target group.
0030      In position ahead of target group. It consisted of
          two AK's and two Corvette escorts on base course 080 T.
          Speed 9 kts.
0130      Dove and commenced radar and periscope approach.
0205      With targets overlapping, range on nearest one 1000 yds.
          and angle on bow 90 port fired # 1 torpedo - premature.

                                                                -3-

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0205-08 Fired # 2 torpedo - premature.
0205-16 Fired # 3 torpedo - premature.
           By this time the closest escort which was about
           700 yds. on our port bow turned and headed for us;
           we went deep. He hunted for awhile then left.
           No depth charges.
0240 Started to periscope depth.
0310 Surfaced and began running on convoy's base course.
           At daylight found pieces of torpedo on the bridge.
0600 Sighted two ships by periscope bearing 060 R.
           (Ship Contact # 2). Commenced working ahead.
           During the morning made an inspection of the top-
           side. Found many pieces of torpedoes scattered
           about varying in size from small slivers to one
           piece which was 3" x 10".
1500 In position ahead of convoy. Base course 100 T.
           Speed 9 kts. The weather from 0600 to 1500 was
           extremely poor with many rain squalls and low
           visibility. The target was lost completely several
           times.
1510 Dove, and commenced approach.
1600 Heavy rain squalls and low visibility set in again.
           Lost sight of target but continued down reverse of
           base course.
1808 Surfaced and sent Redfin One.
1830 Set course for Sibutu Passage.

           10 JANUARY 1944 (7th DAY)

           Underway on surface.
1856 Entered Sibutu Passage.
2145 Cleared Sibutu Passage.
           Received orders to inactivate all warheads
           exploders.

-4-

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                                        U.S.S. REDFIN.

                                        11 JANUARY 1944 (8th DAY)

Underway on surface.

Commenced inactivating warhead exploders. On loosening
the holding studs of the exploder in the torpedo in #
3 tube an excessive pressure and a peculiar odor issued
from the exploder cavity. Investigation showed the war-
head to be cracked around the booster cavity. From
this crack a white foam and a sizzling sound were com-
ing. The warhead was detached from the torpedo, placed
in the outboard end of the tube and ejected. It appa-
rently broke up on ejection as a greenish sludge ap-
peared in the wake.

                                        12 JANUARY 1944 (9th DAY)

Underway on surface.

0800    Entered Mindoro Strait (West Cuyo Pass).

1900    Cleared Mindoro Strait (West Apo Pass).

                                        13 JANUARY 1944 (10th DAY)

0620    Dove.

        Completed inactivation of warhead exploders.

1215    Surfaced.

1233    Began running up traffic lane.

2145    Entered area.

                                        14 JANUARY 1944 (11th DAY)

Patrolling on surface.

1500    Set course for focal point off Macclesfield Bank.
        Force 5 seas from Northeast.

                                        15 JANUARY 1944 (12th DAY)

Patrolling on surface.
Force 5 seas from Northeast.

                                        -5-

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16 JANUARY 1944 (13th DAY)
Patrolling on surface.

1705 Sighted smoke on horizon bearing 065 T. (Ship
Contact #3). Increased speed to 14 kts and com-
menced tracking. Radar picked up convoy at 16,000
yds, 4 ships, changed course to 230 T. Hazy
visibility around horizon.

1715 Determined convoy course to be 230 T. speed 13,
lost radar contact. We are in a perfect position
for night surface attack an hour or two after sun-
set. Moonrise 2300.

1720 SIGHTED mast of another ship dead astern. This ship
was on the starboard side of the convoy, distance
about 5 miles from it. It was 16,000 yds from us.
Mast was dimly visible through thick surface haze.
Angle on the bow appeared to be zero. Four engines
on propulsion, making 240 turns. We are only making
12 kts. due to heavy seas from starboard quarter
which cause us to yaw as much as 15 degrees on each
side of course.

1730 Jap does not seem to be gaining much. He may not have
sighted us but he has the advantage of visibility as
the horizon is much clearer in our direction. Radar
has not picked him up. As sunset at 1809 decided to
stay on surface and try to outrun him in hopes of
getting convoy after dark. If we dive we will never
get a shot at anything.

1800 Jap is closing slowly. Identified him as escort. High
foremast, part of hull is visible, angle on the bow
still zero. Increased speed to 280 turns, making 17
knots.

1809 Sunset and are we glad to see it. However the Jap
soon took some of the joy out of us by blinking a few
times in our direction. Ran blower for five minutes.

1810 Jap lit off his last two boilers, we can see the smoke.
From now on the chase (or is it retreat?) is really
on. Blew safety.

1820 Radar picked up target at 13,000 yds. Consider this
an excellent performance as the best we could get on
old U.S. destroyer was 9000 yds.

-6-

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U.S.S. REDFIN.

CONFIDENTIAL

1830        Range 9000. Went to battle stations. Changed
            course left 10 degrees, 220 T. This did not fool
            the Jap. He came right around after us.

1845        TDC solution is checking nicely. Target speed 28 kts.
            He must be making turns for 34 in this sea. We are
            making turns for 21 and only getting 17. Range rate
            is about 400 yds. per minute, closing.

1847        Jap presented 15° starboard angle on bow then changed
            to zero immediately. Definitely not a yaw.

1848        Repeated above maneuver. Believe he is firing at
            us, although no splashes are seen.

1850        Fired salvo of four torpedoes down the throat,
            torpedo run 2900 yds. Depth setting 6 ft.

1850-30     Jap is definitely firing at us with his forward
            turret. Two splashes, about 50 yds. short in range
            and 20 yds. off in deflection.

1851        More splashes. Enemy is turning slowly to star-
            board, either to avoid torpedoes or to bring after
            turrets to bear. Sighted twin flashes on fore-
            castle and stern of enemy. Identified him as a big
            destroyer, probably a FUBUKI, considering his speed
            and armament. At least one twin turret forward and
            one aft. All his guns firing now, we can see the
            flashes and splashes.

1852        Torpedoes started hitting. FOUR. Target is now
            broadside, stopped, and covered with heavy black
            smoke. Hits were observed on the bridge and felt
            throughout the ship. Radar pip disappearing. Be-
            lieve first torpedo hit pushed Jap completely around
            permitting the next three to hit. Spread used was
            only 1/8 degree.

1852-30     Tremendous explosion on target. Entire sky in his
            direction a bright red for at least 30 seconds.
            Target disintegrated and SANK.

1900        Changed course to 110 T. Changed speed to 14 kts
            to get back on convoy's track.

            Sent Redfin Two.

-7-

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CONFIDENTIAL

17 JANUARY 1944 (14th DAY)
0645 Dove for submerged patrol.
1832 Surfaced.
     Force 5 seas from Northeast.

18 JANUARY 1944 (15th DAY)
0648 Dove for submerged patrol
1830 Surfaced.
     Force 5 seas from Northeast.

19 JANUARY 1944(16th DAY)
0647 Dove for submerged patrol.
1832 Surfaced and set course for Indo China coast.
     Force 5 seas from Northeast.

20 JANUARY 1944 (17th DAY)
0650 Sighted Indo China coast (Kulao Rai).
     Dove for submerged patrol.
1832 Surfaced.

21 JANUARY 1944 (18th DAY)
0654 Dove for submerged patrol off Kulao Rai.
1838 Surfaced.

22 JANUARY 1944 (19th DAY)
0657 Dove for submerged patrol off Kulao Rai.
1835 Surfaced.

23 JANUARY 1944 (20th DAY)
     Patrolling on surface.
0915 Sighted Mitisubushi bomber.(Plane Contact #1).
     Dove.
1832 Surfaced.

-8-

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U.S.S. REDFIN.

24 JANUARY 1944 (21st DAY)

Patrolling on surface.

25 JANUARY 1944 (22nd DAY)

Patrolling on surface, along coast.
0810 Sighted sailboats along coast.
     Dove and patrolled submerged.
1832 Surfaced.

26 JANUARY 1944 (23rd DAY)

Patrolling on surface, along coast.
0850 Sighted sailboats along coast.
     Dove and patrolled submerged.
1835 Surfaced. Set course for Macclesfield Bank.

27 JANUARY 1944 (24th DAY)

Patrolling surface.
0915 Sighted overturned white clinker type wooden life
     boat. Brought it alongside. There were no identify-
     ing marks of any kind.

28 JANUARY 1944 (25th DAY)

Patrolling on surface.
Received despatch changing area boundaries.

29 JANUARY 1944 (26th DAY)

Patrolling on surface.

30 JANUARY 1944 (27th DAY)

Patrolling on surface.
1830 Set course for Indo China coast.

31 JANUARY 1944 (28th DAY)

0705 Dove for submerged patrol.
1842 Surfaced.

-9-

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CONFIDENTIAL

1 FEBRUARY 1944 (29th DAY)
0710 Dove for submerged patrol.

1845 Surfaced.

2 FEBRUARY 1944 (30th DAY)
0715 Dove for submerged patrol.
1842 Surfaced.
1920 Set course for Macclesfield Bank.

3 FEBRUARY 1944 (31st DAY)
Patrolling on surface.

4 FEBRUARY 1944 (32nd DAY)
Patrolling on surface.

5 FEBRUARY 1944 (33rd DAY)
Patrolling on surface.

1805 Departed area and set course for Mindoro Strait.

6 FEBRUARY 1944 (34th DAY)
Underway on surface.
1700 Sighted small (about 25 ft.) sampan tending nets off
     West Apo Pass. Worked around him.
1915 Entered Mindoro Strait (West Apo Pass).

7 FEBRUARY 1944 (35th DAY)
Underway on surface making transit of Mindoro Strait.
0330 Cleared Mindoro Strait (West Cuyo Pass).
0600 Dove.
1600 Surfaced.

-10-

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CONFIDENTIAL
8 FEBRUARY 1944 (36th DAY)

Underway on surface.

0715 Sighted destroyer coming out of haze. (Ship Contact
# 4). Dovo. Relative bearing 035, angle on the bow
about 35 starboard. He was coming out of the passage
east of Pearl Bank which we were trying to make.
He apparently did not see us as he continued on his
way. Closest range estimated about 9000 yds. Esti-
mated course 320, speed 16-18 kts. Sea heavy from
Northeast.

1813 Surfaced and set course for Sibutu Passage.

9 FEBRUARY 1944 (37th DAY)

Underway on surface.

0145 Entered Sibutu Passage.

0300 Cleared Sibutu Passage.

0752 Dove.

1600 Surfaced.

10 FEBRUARY 1944 (38th DAY)

Underway on surface.

0000 Entered Makassar Strait.

1400 Dove off Cape William.

1845 Surfaced.

2112 Cleared Cape William and set course for Lombok Strait.

11 FEBRUARY 1944 (39th DAY)

Underway on surface.

0830 Sighted Mitsubishi medium bomber. (Plane Contact
#2). Dove.

1600 Surfaced and set course for Lombok Strait.

12 FEBRUARY 1944 (40th DAY)

Underway on surface.

-11-

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SS272/A12-1
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CONFIDENTIAL

0100 Entered Lombok Strait.
0400 Cleared Lombok Strait.
0515 Dove.
1600 Made 250 ft. test dive.
1900 Surfaced and set course for Fremantle, W.A.

13 FEBRUARY 1944 (41st DAY)
Underway on surface enroute Fremantle, W.A.
Sent Rodfin Three.

14 FEBRUARY 1944 (42nd DAY)
Underway on surface enroute Fremantle, W.A.

15 FEBRUARY 1944 (43rd DAY)
Underway on surface enroute Fremantle, W.A.

16 FEBRUARY 1944 (44th DAY)
Underway on surface enroute Fremantle, W.A.

17 FEBRUARY 1944 (45th DAY)
Underway on surface enroute Fremantle, W.A.
0615 Sighted Rottnest light.
0900 Moored at Fremantle, W.A.
(C) WEATHER
As per sailing direction.
(D) TIDAL INFORMATION
As per sailing direction.
(E) NAVIGATIONAL AIDS
None sighted.

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(F) SHIP CONTACTS

| No. | Time/ | Posit. | Type | Initial Esti. | C & S | How Con- | Remarks. |
|---|---|---|---|---|---|---|---|
| | Date | | | Range | | tacted. | |
| 1 | 2230 H | 3-23N | 2 AK | 15 mi. | 080T | SN- | one similiar to |
| | 1/8/44 | 121-55E | 2 Cor- | | 9 kts | smoko. | Lisbon Maru. |
| | | | vette | | | | One unidentified. | 2 | 0600 H | 3-30N | | 15 mi. | 100T | SD- | Ships were never |
| | 1/9/44 | 123-23E | | | 9 kts | smoko. | seen, lost in bad |
| | | | | | | | weather after |
| | | | | | | | diving. | 3 | 1715 H | 15-08N | 4 Un- | 7 mi. | 230T | SD- | Lookout sighted |
| | 1/16/44 | 114-58E | known | | 13 kts | smoko. | puff of smoko. |
| | | | 1 DD | | | | No chance to |
| | | | | | | | identify ships |
| | | | | | | | as escort started |
| | | | | | | | closing in. | 4 | 0715 H | 5-57N | 1 DD | 6 mi. | 320T | SD | Mutuki Class. |
| | 2/8/44 | 119-19E | | | 16-18 | | |
| | | | | | kts | | |

(G) AIRCRAFT CONTACTS

| No. | Time/ | Lat-Long. | Type | Range | Course | How | Remarks |
|---|---|---|---|---|---|---|---|
| | Date | | | | | contacted | |
| 1 | 0915 H | 16-35N | Mitsubishi | 12 mi | 180 | Sight | |
| | 1/23/44 | 109-47E | 2 | 0835 H | 5-34S | Mitsubishi | 6 mi | 070 | Sight | |
| | 2/11/44 | 116-58E | | | | | |

-13-

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(H)

U.S.S. REDFIN (SS272) Torpedo Attack No. 1 Patrol No. 1
Time: 0205 H Date: Jan. 9,1944. Lat.: 5-23 N Long:121-55E

Target Data - Damage Inflicted

Description: Sighted smoke on horizon on bright
moonlight night. Visibility about
15000 yards.
Convoy consisted of:-
2 Corvette type escorts
1 AK - Lisbon Maru type
1 smaller unidentified AK

Ship(s) Sunk: None.
Ship(s) Damaged: None.

Damage Determined
by: None.

Target Draft: 27 ft Course: 057 T Speed: 9 kts. Range: 980 yds.
(at firing)

OWN SHIP DATA

Speed: 4 kts. Course: 135 T. Depth: 65 ft. Angle: 0°(at firing)

FIRE CONTROL AND TORPEDO DATA

Type Attack:-
Tracked on surface to a range of 8400 yards.
Then submerged to 40 feet and continued track-
ing by periscope and radar. At 6000 yards
went to periscope depth and made attack using
periscope.
Torpedoes exploded prematurely.

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CONFIDENTIAL

Tubes fired                     No. 1           No. 2           No. 3
Track Angle                     100° Port       104° Port       106° Port
Gyro Angle                      003°            355°            000°
Depth Set                       10              10              10
Power                           High            High            High
Hit or Miss                     Miss            Miss            Miss
Erratic                         No              No              No
Mark Torpedo                    14-3A           14-3A           14-3A
Serial No.                      39886           25226           29858
Mark Exploder                   6-4             6-4             6-4
Serial No.                      6635            7243            6330
Actuation Set                   Contact &       Contact &       Contact &
                                Magnetic        Magnetic        Magnetic
Actuation Actual                Magnetic        Magnetic        Magnetic
Mark Warhead                    16              16              16
Serial No.                      10136           310             9981
Explosive                       Torpex II       Torpex II       Torpex II
Firing Interval                 8 sec.          8 sec.          -
Type Spread                     Divergent       Divergent       Divergent
Sea Conditions                  Cond. 1         Cond.1          Cond.1
Overhaul Activity               NavTorpSta      USS             NavTorpSta
                                Newport, R.I.   Fulton          Newport, R.I.

REMARKS.
All torpedoes exploded prematurely.

-15-

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(H) ATTACK DATA

U.S.S. REDFIN(SS272) Torpedo Attack No. 2 Patrol No. 1
Time: 1850 H Date: January 16,1944 Lat:15°-08'N
Long:114°-58'E

Target Data - Damage Inflicted
Description: DD escort for a four ship convoy searching
10,000 yds on starboard beam of convoy. No
other escort seen. Type of ships in convoy un-
known. Contact made by sighting smoke on a
hazy day at about 15,500 yds.Visibility
16,000 yds.

Ship(s) Sunk: 1 DD FUBUKI Class, 1850 Tons.
Ship(s) Damaged: None.

Damage One hit was seen, four felt throughout the
Determined ship and on bridge and four were observed
by: on the radar. After first hit a large cloud
of black smoke covered target. Following the
other hits a tremendous explosion took place
on the target followed by a bright red glow
which lasted from 30-45 seconds. Target was
seen to disintegrate and sink.

Target Draft: 10 Course: 220T. Speed: 28 kts.Range:4700 yds.
(at firing)

OWN SHIP DATA
Speed: 17 kts.Course:220T.Depth: Surface Angle: Pitching
(at firing)

FIRE CONTROL AND TORPEDO DATA
Type Attack: Attack was made on surface in twilight.
The target course was known as he was follow-
ing dead astern. Speed was obtained by use
of radar and TDC. Firing bearings were taken
from the after TBT. Torpedoes were set at
6 feet. Spread used was about 1/8 degree.

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Tubos Fired | No. 7       | No. 8       | No. 9       | No. 10
||||
Track Angle | 000°        | 000°        | 000°        | 000°
Gyro Angle  | 179-3/4°    | 179-7/8°    | 180-1/8°    | 180-1/4°
Depth Set   | 6           | 6           | 6           | 6
Power       | High        | High        | High        | High
Hit or Miss | Hit         | Hit         | Hit         | Hit
Erratic     | No          | No          | No          | No
Mark Torpedo| 14-3A       | 14-3A       | 14-3A       | 14-3A
Serial No.  | 39866       | 39877       | 39142       | 39385
Mark Explodor| 6-4         | 6-4         | 6-4         | 6-4
Serial No.  | 10290       | 12282       | 6360        | 12275
Actuation Set| Contact     | Contact     | Contact     | Contact
Actuation Actual| Contact     | Contact     | Contact     | Contact
Mark Warhead| 16          | 16          | 16          | 16
Serial No.  | 11389       | 1367        | 2639        | 11383
Explosive   | Torpex II   | Torpex II   | Torpex II   | Torpex-
            |             |             |             | II
Firing Interval| 8 sec.      | 8 sec.      | 8 sec.      | 8 sec.
Type spread | Divergent   | Divergent   | Divergent   | Diver-
            |             |             |             | gent.
Sea Conditions.| Cond. 5     | Cond. 5     | Cond. 5     | Cond.5
Overhaul Activity.| NavTorpSta  | NavTorpSta  | NavTorpSta  | Nav-
            | Newport RI  | Newport RI  | Newport RI  | Torp-
            |             |             |             | Sta.
            |             |             |             | Newport.

REMARKS:
None.

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(I) MINES
No comment.

(J) ANTI-SUBMARINE MEASURES AND EVASION TACTICS
The Fubuki class destroyer sunk on 16 January 1944
was patrolling at about five miles on the beam of the con-
voy. It was about one hour before sunset when the contact
was made. He immediately headed our way and never lost us
although for about an hour all we could see was his mast.
We were never able to ascertain whether or not he had
radar.

(K) MAJOR DEFECTS AND DAMAGE
None.

(L) RADIO
Reception and transmission was normal.

(M) RADAR
Sugar Dog radar developed moisture in antenna
during latter part of patrol and operated erratically.
Sugar Jig radar operation was excellent.

(N) SOUND GEAR AND SOUND CONDITIONS
Sound conditions in Celebes sea and Macclesfield
Bank were excellent, propellor noises being heard at
15000 yards.

(O) DENSITY LAYERS
Density layer was noted at 300 feet in Celebes sea.

(P) HEALTH, FOOD, AND HABITABILITY
Health and habitability were excellent. Food
was good, ample in quantity and variety and well prepared.
Sanitation during patrol was good. There were no sick days.

(Q) PERSONNEL
Performance of duty by all hands was of the highest
order. The perfect execution of a most difficult torpedo
shot, while under shell fire, speaks for the state of train-
ing, particularly of the fire control party.

-18-

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CONFIDENTIAL

(R) MILES STEAMED - FUEL USED

Darwin to area 2701 Miles 28300 Gals.
In area 3698 Miles 24700 Gals.
Area to Fromantle 3230 Miles 34500 Gals.

(S) DURATION

Days enroute to area 10
Days in area 23
Days enroute to base 12
Days submerged 10 in area/15 total.

(T) FACTORS OF ENDURANCE REMAINING

Torpedoes Fuel Provisions Personnel

16 1000 gals 15 days 10 days.

Limiting factor this patrol - Operation Order.

(U) REMARKS.

None.

-19-

— page 23 —
SUBMARINE SQUADRON SIXTEEN
U.S.S. RASHER, FL.G.HIF

FC5-16/16-3
Serial 0118
C O N F I D E N T I A L
FIRST ENDORSEMENT to
REDFIN Report of 1st
War Patrol.

26 February 1944.

From: The Commander Submarine Squadron SIXTEEN.
To : The Commander-in-Chief, United States Fleet,
Via : The Commander Submarines, SEVENTH FLEET.
The Commander SEVENTH FLEET.

Subject: U.S.S. REDFIN (SS272) - Report of First
War Patrol - comment on.

1. The first war patrol of the U.S.S. REDFIN
covered a period of forty-five days of which twenty-three
were spent in the area assigned.

2. Four contacts were made and two developed
into attacks.

TT.CK NO. 1

The approach was well conducted and a favorable
firing position was reached. Unfortunately all three
torpedoes prematured.

TT.CK NO. 2

Four torpedoes were fired "down the throat" at a
destroyer, with a torpedo run of 2900 yards and 4
hits were obtained. This considered an unusual
performance. It is noted that these torpedoes were
fired with sea condition 5, with a 6 foot depth
setting with no apparent erratic depth performance.

3. The material condition of the REDFIN is most
satisfactory and the refit can be completed in the usual
length of time. The ship was unusually clean and well-kept
looking upon arrival from patrol.

4. The Squadron Commander takes pleasure in
welcoming the Commanding Officer, Officers and crew of the
REDFIN and in congratulating them on the damage inflicted
upon the enemy.

[SIGNATURE: J. M. HAINES]
J. M. HAINES.

— page 24 —
F24-71/A16-3                               UNITED STATES NAVY
Serial: 0195                                                              12/gms
<u>C-O-N-F-I-D-E-N-T-I-A-L</u>                                                  4 March 1944.

SECOND ENDORSEMENT to:
USS REDFIN Con.Ltr.
A16-3 Serial 0118 dated
26 Feb., 1944. Report
of 1st War Patrol.

From:      Commander Task Force SEVENTY-ONE.
To:        Commander in Chief, UNITED STATES FLEET.
Via:       Commander SEVENTH FLEET.

Subject:   U.S.S.REDFIN (SS272) - Report of First War Patrol -
           Comment on.

           1. The First War Patrol of the REDFIN was conducted in
the SOUTH CHINA SEA in the area between MACCLLESFIELD BANK and the
INDO-CHINA coast and covered a period of forty-five days.

           2. This patrol is considered "successful" for the purpose
of award of the Submarine Combat Insignia.

           3. The Commander Submarines, SEVENTH FLEET, congratulates
the Commanding Officer, Officers and Crew on the completion of a
successful patrol. The REDFIN is credited with inflicting the follow-
ing damage on the enemy:

           SUNK

           1 - DESTROYER (FUBUKI CLASS) - - - - 1,700 Tons.

DISTRIBUTION:
Cominch         (3) - (Direct)             R. W. CHRISTIE.
Cinc Opnav      (2) - (Direct)
Op-23C          (1)
ComlstFlt       (1)
Com2ndFlt       (1)
Com3rdFlt       (1)
Com7thFlt       (1)
ComSubslstFlt   (1)
ComSubs2ndFlt   (1)
F-71            (4)
F-72            (2)
F-16            (1)
ComsRon-16      (1)
Ch S/M W.A.     (1) - NOT TO BE TAKEN TO SEA - BURN
                                           [SIGNATURE: P. F. Straub, Jr.]
                                           P. F. STRAUB, Jr.,
                                           Flag Secretary.

— page 25 —
UNITED STATES FLEET
COMMANDER SEVENTH FLEET

A16-3/(F-6/cw)
Serial: 0876

18 APR 1944

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

THIRD ENDORSEMENT to:
CO USS REDFIN (SS272)
Conf.ltr. Serial 01
dated 17 February 1944.

From: The Commander SEVENTH FLEET.
To : The Commander in Chief, United States Fleet.

Subject: USS REDFIN (SS272) - Report of First War Patrol.

1. Forwarded.

R. H. CRUSEN.
By direction.

— page 26 —
ORIGINAL
IN BAD
CONDITION
_______

BEST

AVAILABLE

[Image of a circular emblem with a sailing ship, a quill, and a building, flanked by wings, with a banner below]
NAVAL HISTORICAL CENTER

— page 27 —
U.S.S. REDFIN(SS272)
c/o Fleet Post Office
San Francisco, Calif.

[HANDWRITTEN: 2ND COPY]

SS272/A16-3
Serial 014

2 May 1944

[STAMP: CONFIDENTIAL] (crossed out)
[STAMP: DECLASSIFIED]

From: The Commanding Officer, U.S.S. REDFIN(SS272).
To: The Commander in Chief, United States Fleet.
Via: Official Channels.
Subject: U.S.S. REDFIN(SS272), Report of War Patrol
number Two.

Enclosure: (A) Subject report.

1. Enclosure (A), covering the Second War Patrol
of this vessel conducted in the Celebes Sea during the
period 19 March to 2 May 1944 is forwarded herewith.

[SIGNATURE: H. C. KIEFER]

DECLASSIFIED ART. 0445, OPNAVINST 5510.1C
BY [HANDWRITTEN: OP-09B7C] DATE [HANDWRITTEN: 6/1/72]

[STAMP: DECLASSIFIED]

[STAMP: 75509] [STAMP: FILMED]

— page 28 —
U.S.S. REDFIN (SS272)

SS272/A16-3
Serial- 014
CONFIDENTIAL

2 May 1944.

Subject: U.S.S. Redfin, Report of War Patrol No.2.

(A) PROLOGUE

The Redfin arrived Freemantle, W.A., on 17
February 1944, following her first war patrol. The over-
haul was accomplished by the Submarine Repair Unit, Navy
137 and a relief crew from Submarine Division 161. The
refit was normal and well done. No. 1 & 2 main engines
were overhauled and the bridge superstructure forward was
cut down. The vessel was not dry-docked nor did it appear
that it needed docking.

On 2 March 1944 Lieutenant Commander Marshall
H. Austin, U.S.N., relieved Commander Robert D. King, U.S.N.
as Commanding Officer.

The period from 2 March to 7 March was devoted
to training and completion of loading during which time the
ship was sound tested and the magnetic signature taken.

The period from 8 March to 14 March were spent
on a scouting line two hundred miles from Rottnest Light.

The period 15 March to 18 March was devoted
to further training and final loading. Three exercise
torpedoes were fired.

Departed for second war patrol at 1315, on
19 March 1944 with instructions to patrol the SOUTH CHINA
SEA south of latitude 8 degrees North and west of longitude
110 degrees East and to pay particular attention to the
Southern approaches to BALARAC STRAIT, MIRI, and the SINGA-
PORE - MANILA shipping routes.

(B) NARRATIVE (ALL TIMES HOW)

19 March (1st day)

1313 Underway for Darwin.
1500 Commenced training exercises with USS Chanticleer.
2215 Completed training exercises and departed.

20 March (2nd day)

1450 Sighted aircraft and identified as PBY. Shortly
after sighting picked up plane on SD Radar-range
did not close to less than 12 miles.
Aircraft Contact No.1.

(1)

— page 29 —
U.S.S. REDFIN (SS272)

SS272/A16-3                                                    2 May 1944.
Serial 014
CONFIDENTIAL
Subject: U.S.S. Redfin, Report of War Patrol No.2.

— page 30 —
SS272/A16-2
Serial 014
CONFIDENTIAL

U.S.S. REDFIN (SS272)

2 May 1944.

Subject: U.S.S. Redfin, Report of War Patrol No.2.

— page 31 —
U.S.S. REDFIN (SS272)

SS272/A16-3
Serial 014
CONFIDENTIAL

2 May 1944.

Subject: U.S.S. Redfin, Report of War Patrol No.2,

           27 March (9th day - Con't)

1222 Surfaced.
1318 Sighted B-25 plane. Picked up on SD Radar at
     20 miles, least range 18 miles. Did not dive.
     Aircraft Contact No.8.
1420 Aircraft contact on SD Radar - range 22 miles.
     Sighted plane and identified as B-25. Did
     not dive. Aircraft Contact No.9.
1453 Sighted 3 low flying aircraft - identified as
     B-25. Estimated range 20 miles. Did not dive.
     Aircraft Contact No.10.
2152 Passed through Barrier west of Sermata Island.

     Noon Position:-           Lat: 10-08S
                               Long: 129-33E

           28 March (10th day)

0150 Decided to use Manipa Strait in order to obtain
     a satisfactory position in the Ceran Sea for a
     patrol to intercept traffic between Kau Bay
     and Ambon.
1244 Sighted small fishing boat, apparently engaged
     tending nets on Skuro Reef. Ship Contact No.1.
1344 Aircraft contact on SD Radar at 12 miles. Plane
     not sighted. Submerged. Aircraft Contact No.11.
1430 Surfaced.
1435 Sighted low flying plane heading directly for
     Redfin. Identified as Bi-plane, probably type
     "Pete" - submerged to avoid. No bombs or
     depth charges.
1547 Surfaced.
2141 Started through Manipa Strait.

     Noon Position:-           Lat: 05-59S
                               Long: 127-21E

           29 March (11th day)

0030 Completed passage of Manipa Strait. No contacts.
     Headed northeast to obtain position on line be-
     tween Tobalai Strait and Kelang Strait to inter-
     cept traffic from Kau Bay to Ambon.
0555 Submerged.
1800 Surfaced and headed up towards Tobalai Island
     to spend night patrolling Tobalai Strait and
     waters 20 miles to the eastward of Tobalai Is.
     I considered this the best spot to cover traffic
     lanes running both east and west of Halmahera.

(4)

— page 32 —
U.S.S. REDFIN (SS272)

SS272/A16-3                                                              2 May 1944.
Serial 014
CONFIDENTIAL
Subject: U.S.S. Redfin, Report of War Patrol No.2.

— page 33 —
SS272/A16-3
Serial 014
CONFIDENTIAL

U.S.S. REDFIN(SS272)
2 May 1944.

Subject: U.S.S. Redfin, Report of War Patrol No.2.

2 April(15th day)

0200 Received instructions to patrol a section within
     a 120 miles radius of Davao between bearing line
     185 T and 220 T.
0518 Sighted Palmas Island.
0610 Sighted what appeared to be a part of a vessels
     mine sweeping gear. A rough sketch of the above
     gear is appended hereto. Judging from the size
     of the object and the level at which it floated
     it is not considered probable that it could have
     been a loaded mine. It was similar in size to
     a torpedo exercise head.
     Position: Lat:05-29N Long: 126-43E
0635 Submerged for day patrol off Palmas Island.
1725 Surfaced having made no contacts. Headed on a
     westerly course to patrol at outer edge of patrol
     sector on a probable line of traffic between
     Makassar Strait and Davao.
     See part (I) Mines.
     Noon Position: Lat: 05-25N Long:126-32E

3 April (16th day)

0147 Arrived at desired patrol point 63 miles
     260 from Balut Island and commenced patrol
     on a north and south line through point at
     slow speed.
0546 Undo trim dive.
0630 Heard distant explosion which sounded similar
     to depth charges.
0703 Heard another distant explosion. This lead me
     to believe that there might be a target approach-
     ing and the Japs were up to their old trick of
     dropping depth charges indiscriminately prior
     to the passage of a valuable ship. Went to 50 ft.
     for good look, but no luck.
0732 Heard last distant explosion.
0825 Surfaced and commenced patrol on north and south
     line.
1556 Aircraft on SD Radar at 10 miles with range clos-
     ing rapidly. Plane not sighted. Aircraft
     Contact No.14. Submerged.
1743 Surfaced and headed up for patrol station at west
     end of Sarangani Strait.
2000 While checking torpedoes found one torpedo forward
     with bad leak in line from top of starting valve
     to starting gear via turbine bulkhead. Unable to
     repair.

     Noon Position: Lat:05-18N Long:124-23E

(6)

— page 36 —
SS272/A16-3
Serial 014
CONFIDENTIAL
Subject: U.S.S. REDFIN(SS272)
                                                                                                2 May 1944.
                                                                                                U.S.S. Redfin, Report of War Patrol No.2.

— page 39 —
SS272/A16-3
Serial 03
CONFIDENTIAL
Subject: U.S.S. REDFIN(SS272)
                                                                2 May 1944.
                                U.S.S. Redfin, Report of War Patrol No.2.

— page 41 —
S°272/A16-3
Serial 014
CONFIDENTIAL

U.S.S. REDFIN(SS272)

2 May 1944.

Subject: U.S.S. Redfin, Report of War Patrol No.2.

— page 46 —
U.S.S. REDFIN(SS272)

2 May 1944.

SS272/A16-3
Serial 014
CONFIDENTIAL
Subject: U.S.S. Redfin, Report of War Patrol No.2.

— page 48 —
U.S.S. REDFIN(SS272)
SS272/A16-3
Serial 014
CONFIDENTIAL
2 May 1944.

Subject: U.S.S. Redfin, Report of War Patrol No.2.

— page 49 —
U.S.S. REDFIN (SS272)
SS272/A16-3
Serial 014
CONFIDENTIAL
Subject: U.S.S. REDFIN, Report of War Patrol No. 2.
2 May 1944

--- 28 April (41st day - con't.) ---
2101 Transmitted estimated time of arrival at Freemantle.
Noon Position: Lat: 13-08.7S Long.: 114-19E

--- 29 April (42nd day) ---
0800 Made trim dive.
0810 Surfaced.
1406 Sighted B-25 aircraft - range about 12 miles.
1410 Plane turned toward Redfin. Challenged but
     could get no answer. Plane continued directly
     for Redfin.
1416 Submerged to avoid approaching plane. No depth
     charges or bombs.
1504 Surfaced and continued on course.
Noon Position: Lat: 19-22.S Long:112-09E

--- 30 April (43 day) ---
No remarks.
Noon Position: Lat: 25-17S Long: 112-09E

--- 1 May (44 day) ---
No remarks.
Noon Position: Lat: 30-10S Long:113-39E

--- 2 May (45 day) ---
Arrived Freemantle, W. A.

(22)

— page 50 —
U.S.S. REDFIN(SS272)

SS272/A16-3
Serial 014
CONFIDENTIAL

Subject: U.S.S. Redfin, Report of War Patrol No.2.

(C) WEATHER
    The weather during the entire patrol was good.

(D) TIDAL INFORMATION
    Tides agreed with those shown on charts and
    described in Sailing Directions.

(E) NAVIGATIONAL AIDS
    No lighted navigational aids were sighted.

(23)

— page 51 —
(F)
SHIP CONTACTS

NO | TIME | DATE | L.T. LONG | TYPE | INITIAL RANGE YARDS | COURSE SPEED | HOW CON- TACTED | REMARKS
---|------|------||------||||
SHIP CONTACTS
(F)
NO | TIME | DATE | L.T. LONG | TYPE | INITIAL RANGE YARDS | COURSE SPEED | HOW CON- TACTED | REMARKS
---|------|------||------||||

— page 52 —
(G)
NO. TIME | LAT: | AIRCRAFT CONTACT | REMARKS
DATE | LONG: | TYPE INITIAL COURSE HOW CON- |
| | RANGE SPEED TACTED |
| | MILES |
1 1450 | 28-53S | PBY 12 155T SD | Held course and speed
20 Mar | 113-04E | 115kts | Evidently was not
| | | sighted by plane
2 0653 | 15-09S | U/1 17 - R | Not sighted.
24 Mar | 120-50E | |
3 1047 | 15-09S | U/1 - R | Two planes not sight-
24 Mar | 120-03.R. | 6 | ed. Dove to avoid
4 0925 | 13-26S | B-25 5 270T R | Dove when range clos-
25 Mar | 125-53E | 200 | ed to 4 miles.
5 1323 | 12-12S | B-25 12 090T SD | Although plane was
25 Mar | 126-30E | 200 | high (5000 ft) the
| | | SD was not able to
| | | pick it up until co-
| | | ached on. Height of
| | | plane was verified
| | | at Darwin.
6 0935 | 10-25S | B-25 10 340T SD | Plane was high. SD
27 Mar | 129-21.5E | 200 | Radar picked up at
| | | 7 miles. Submerged
| | | to avoid.
7 1213 | 10-01S | B-25 12 170T SD | Submerged to avoid.
27 Mar | 129-35E | 200 |
8 1318 | 09-51S | B-25 20 170T SD | Picked up on SD Radar
27 Mar | 129-42E | 200 | after sighting. Did
| | | not dive.
9 1420 | 09-41S | B-25 22 170T R | Plane was later
27 Mar | 129 51E | 200 | sighted.
10 1453 | 09-34S | B-25 20 170T SD | 3 planes, low flying.
27 Mar | 129-48E | 200 | Not picked up on
| | | | Radar.
11 1344 | 5-29.5S | U/1 12 -- P | Submerged to avoid.
28 Mar | 127-07E | |
12 1435 | 5-29.5S | Poto 10 121T SD | Submerged to avoid.
28 Mar | 127-07E | Unknown |
13 0800 | 1-19N | U/1 16 -- R | Was not sure that
1 Apr | 126-53E | | this an authentic
| | | | contact. Did not dive
14 1556 | 5-11N | U/1 10 -- R | Submerged. Plane was
3 Apr | 124-26E | | never sighted.
15 0553 | 5-32N | Jake 10 230T SD | Submerged to avoid
6 Apr | 124-44E | 150 |
16 1503 | 5-34N | Batty 8 090T P | Was submerged at
6 Apr | 124-44E | 200 | time of contact.
| | | (25) |

— page 53 —
(a)
AIRCRAFT CONTACT..(Continued)

NO.TIME | LAT: | TYPE INITIAL COURSE HOW CON- | REMARKS
DATE | LONG: | RANGE SPEED TACTED |
| | MILES |
17 0847 | 5-05N | U/1 9 | - | R | Submerged to avoid.
8 Apr | 123-54E | | | |
18 1203 | 02-12N | U/1 4 | -- | R | This could have been
18 Apr | 122-05E | | | | a false contact as
| | | | | no bombs were dropped
| | | | | while submerged.
19 0716 | 05-03S | Pote 5 | 004T | SD | Two depth charges.
26 Apr | 117-25E | | 150 | |
20 1406 | 19-52S | B-25 12 | 097T | SD | Submerged to avoid
28 Apr | 112-48E | | 200 | | when plane turned
| | | | | toward Redfin

(26)

— page 54 —
U.S.S. HELFIN TORPEDO ATTACK NO.1 PATROL NO.1
TIME: 1715 Date: 4-11-44 Lat:06° 43'N Long:122° -23'E
DESCRIPTION:
Single destroyer - Shinonome Group of the Fubuki Group Class.
SHIP(S) SUNK:
1 DD 1700 Shinonome
DAMAGE DETERMINED BY:
Observed two hits
Saw ship sink
Target draft: 9½ Course: 085T Speed:19.5 range:1340(at firing)
OWN SHIP DATA
Speed: 2.5 Course: 180.5 Depth 67' Angle: 0(at firing)
FIRE CONTROL AND TORPEDO DATA
This attack was made at periscope depth. Started in for a bow
shot, but at range 4500 yards the target zigged giving a perfect
set up for the stern tubes. Used continuous periscope bearings
while firing.

(27)

— page 55 —
ATTACK NO. 1

| | No. 7 | No. 8 | No. 9 | No. 10 |
|---|---|---|---|---|
| Tubes Fired | | | | |
| *Track Angle | 93S | 96S | 102S | 104S |
| *Gyro Angle | 176 | 182 | 189 1/2 | 185 1/2 |
| *Depth Set | 6 | 6 | 6 | 6 |
| *Power | HIGH | HIGH | HIGH | HIGH |
| *Hit or Miss | Hit | Hit | Hit | Miss |
| *Erratic | No | No | No | No |
| (Yes or No) | | | | |
| *Mark Torpedo | 14-3A | 14-3A | 14-3A | 14-3A |
| *Serial No. | 26112 | 23148 | 40486 | 39896 |
| *Mark Exploder | 6-5 | 6-5 | 6-5 | 6-5 |
| *Serial No. | 7327 | 12271 | 7239 | 7237 |
| *#Actuation set | Contact | Contact | Contact | Contact |
| *#Actuation actual | Contact | Contact | Contact | ----- |
| *Mark Warhead | 16 | 16 | 16-1 | 16-1 |
| *Serial No. | 11520 | 5850 | 11848 | 3153 |
| *Explosive | Torpex | Torpex | Torpex | Torpex |
| Firing interval | 8 sec. | 8 sec. | 8 sec. | ----- |
| Type spread | Divergent | Divergent | Divergent | Divergent |
| Sea conditions | 1 1/2 L | 1 1/2 R | 1 4R | 1 4L |
| Overhaul activities | Navy 137 | Navy 137 | Navy 137 | Navy 137 |
| Remarks | None | | | |

*..Enter for each torpedo fired.
#..Enter whether set for magnetic or only contact actuation
when applicable and on next line, your best estimate of type
actuations actually resulting.

(28)

— page 56 —
U.S.S. REDFIN TORPEDO ATTACK NO.2 PATROL NO.2.
Time: 1948 H Date: 12 april 1944 Lat: 5 -12'N Long: 123 -57'E

DESCRIPTION
1 CL which was identified as the Kiso of the Kimo Class
escorted by an unidentified two stack destroyer. Contact
was made by sighting. Visibility conditions were excellent.

SHIP(S) SUNK or DAMAGED
None

Target Draft: 16' Course: 070 Speed:21.0 Range: 4100 yds(at firing)

OWN SHIP DATA
Speed: 10.0 Course: 070 Depth: Surface Angle: 0(at firing)

FIRE-CONTROL AND TORPEDO DATA
Ships were sighted at 1443 at range 37,000 yds. Went immediately
to full power. Was able to hold range and bearing. Own ship's
speed 18.3 knots. At 1610 started in to attain an attack position.
Because of poor SJ Radar performance went in too far before starting
attack. At 1940 unable to get off target's track and with range
closing rapidly decided to fire down the throat. The target zigged
right at the time of firing causing all torpedoes to miss.

(29)

— page 57 —
TT.CK NO. 2

| | No. 7 | No. 8 | No. 9 | No. 10 |
|---|---|---|---|---|
| Tubes fired - | 0 | 0 | 0 | 0 |
| Track angle | 0 | 0 | 0 | 0 |
| *Gyro angle | 179-3/4° | 179-15/16° | 180-1/16° | 180° |
| *Depth set | 8 ft. | 6 ft. | 8 ft. | 6 ft. |
| *Power | High | High | High | High |
| *Hit or Miss | Miss | Miss | Miss | Miss |
| Erratic | No | No | No | No |
| (Yes or No) | | | | |
| *Mark Torpedo | 14-3A | 14-3A | 14-3A | 14-3A |
| *Serial No. | 25316 | 25966 | 24477 | 29873 |
| *Mark Exploder | 6-5 | 6-5 | 6-5 | 6-5 |
| *Serial No. | 12113 | 12279 | 6512 | 7242 |
| *Actuation set | Contact | Contact | Contact | Contact |
| *Actuation actual | Contact | Contact | Contact | Contact |
| *Mark Warhead | 16 | 16 | 16 | 16 |
| *Serial No. | 1544 | 11386 | 10169 | 822 |
| Firing Interval | 8 sec. | 8 sec. | 8 sec. | 8 sec. |
| Type spread | Divergent | Divergent | Divergent | Divergent |
| Sea Conditions | 1 1/4L | 1 1/16L | 1 1/16R | 1 1/4R |
| *Explosive | Torpex | Torpex | Torpex | Torpex |

Overhaul Activities Navy 137 Navy 137 Navy 137 Navy 137
Remarks - Missed due to turning of target at time of firing.

*..Enter for each torpedo.
#..Enter whether set for contact or magnetic or only contact
actuation when applicable and on next line, your best estimate
of type actuations actually resulting.

(30)

— page 58 —
USS REDFIN TORPEDO ATTACK NO.3A PATROL NO. 2.
Time: 2236 H Date:: 15 april 1944 Lat: 06 -41'N Long: 123 -40'E

DESCRIPTION
This ship was a 5000-6000 ton unidentified AK and was the leading
ship in port column, of a 5 ship convoy. When convoy was sighted
early in afternoon there was only one ship in port column. At the
time of this attack the second ship in center column a 10,000 ton
unidentified AO had taken station in port column.

SHIP(S) SUNK
1 AK 5000-6000 Unidentified.

DAMAGE DETERMINED BY
Observed two hits and heard three hits. Lost ship on radar.
Ship was not present when convoy was attacked later although all
escorts were accounted for.

Target Draft: 10' Course: 330 Speed: 10.0 Range: 3200 yds(at firing)

OWN SHIP DATA
Speed: 8.0 Course: 103 Depth: Surface Angle: 0(at firing)

FIRE-CONTROL AND TORPEDO DATA
Attained a position about 30 on port bow of convoy and came in
at 15 knots. It was a very dark night with frequent rain squalls.
Convoy did not zig during attack. Fired with TBT bearings and radar
ranges. Fired at range 3200 yards, however since the torpedo run
about 63 seconds longer than anticipated it is quite evident that
the radar was ranging on the escort which was on the port bow of
the convoy.

(31)

— page 59 —
Attack No. 3A

| | No. 1 | No. 2 | No. 3 |
|---|---|---|---|
| Tubes fired | 48 P | 48 P | 49 P |
| *Track angle | 359 | 000½ | 355½ |
| *Gyro angle | 8 | 6 | 8 |
| *Depth set | High | High | High |
| *Power | Hit | Hit | Hit |
| *Hit or miss | No | No | No |
| *Erratic | | | |
| (Yes or no) | | | |
| *Mark torpedo | 14-3A | 14-3A | 14-3A |
| *Serial no | 26087 | 22182 | 24483 |
| *Mark exploder | 6-5 | 6-5 | 6-5 |
| *Serial no. | 7883 | 12414 | 6260 |
| *#Actuation set | Contact | Contact | Contact |
| *#Actuation actual | Contact | Contact | Contact |
| *Mark warhead | 16 | 16-1 | 16 |
| *Serial no. | 2858 | 3811 | 1472 |
| *Explosive | Torpex | Torpex | Torpex |
| Firing interval | 8 sec. | 8 sec. | 8 sec. |
| Type spread | Divergent | Divergent | Divergent |
| Sea conditions | 1⁰ | 1²R | 1²L |
| Overhaul activities | Navy 137 | U.S.S. Holland | Navy 137 |
| Remarks - None | | | |

*..Enter for each torpedo fired.
#..Enter whether set for contact or magnetic or only contact
actuation when applicable and on next line, your best
estimate of type actuation actually resulting.

(32)

— page 60 —
U. S. S. REDFIN
TORPEDO ATTACK NO. 3B PATROL NO. 2
Time: 2237 H Date: 15 April 1944 Lat: 06 -41'N Long:123 -40E

DESCRIPTION:
This ship was a 10,000 ton AO and was the second
ship in the port column of a 5 ship convoy.

SHIP(S) SUNK:-

1 AO 10,000 unidentified.

DAMAGE DETERMINED BY:

Observed and heard two hits. This ship was not present
when the convoy was attacked later, although all escorts
were accounted for.

Target Draft: 12 Course: 340 Speed: 10. Range at time of firing:3320

OWN SHIP DATA

Speed: 8.0 Course 103 Depth: Surface Angle 0 (at firing)

FIRE-CONTROL & TORPEDO DATA

Radar surface attack using TBT bearings as in attack 3A the
ranges as obtained on radar were incorrect.

(33)

— page 61 —
.TT.CK No. 3B

Tubes fired                               No. 4      No. 5      No. 6
*Track angle                              58P        58P        58P
*Gyro angle                               000        001½       357
Depth set                                 6          8          6
*Power                                    High       High       High
*Hit or miss                              Hit        Miss       Hit
*Erratic                                  No         No         No
(Yes or No)
*Mark torpedo                             14-3A      14-3A      14-3A
*Serial no.                               22156      22507      23130
*Mark exploder                            6-5        6-5        6-5
*Serial no.                               7263       13146      12,274
*#.ctuation set                           Contact    Contact    Contact
*#.ctuation actual                        Contact    Contact    Contact
*Mark warhead                             16         16-1       16-1
*Serial no.                               2026       12004      6230
*Explosive                                Torpex     Torpex     Torpex
Firing intervals                          8 sec.     8 sec.
Type spread                               Divergent  Divergent  Divergent
                                          0          2 R        2 L
Sea conditions                            1          1          1
Overhaul activities                       U.B.S.     Navy 137   Navy 137
Remarks - One miss                        due to     spread.
                                          Holland

*..Enter for each torpedo fired.

#..Enter whether set for contact or magnetic or only contact
actuation when applicable and on next line, your best
estimate of type actuations actually resulting.

(34)

— page 62 —
USS REDFIN TORPEDO ATTACK NO. 4A PATROL NO.2.
Time: 0133 H Date: [HANDWRITTEN: 14] April 1944 Lat: 07 -04'N Long: 123 -27'E

DESCRIPTION
This ship 8215 ton AK similar to the Najina Muroto page 133
ONI 208 J. It was the leading ship of a column of three ships.
The convoy had consisted of five ships, but two were missing after
attack Nos. 3A & 3B.

SHIP(S) SUNK
1 AK 8215 Similar to Najina Muroto page 133 ONI J

DAMAGE DETERMINED BY
Observed two hits. Noted heavy smoke amidships. Ship was seen
to settle. Ship was not present later when returned to scene of
attack. Two escorts were at scene engaged in picking up survivors.

Target Draft: 12' Course: 300 Speed: 11.0 Range: 2700 yds.(at firi

OWN SHIP DATA
Speed: 6.0 Course 180 Depth: Surface Angle: 0(at firing)

FIRE-CONTROL AND TORPEDO DATA
Night surface radar ranges and TBT bearings. Started attack
from a position 16,000 yards 60° on starboard bow of leading ship.
At 12,000 yards the convoy commenced a changed of course in
succession. At time of firing first two ships were steadied on
new course. Fired at leading ship.

(35)

— page 63 —
ATTACK NO. #.4A

| | No. 1 | No. 2 | No. 3
Tubes Fired | | |
*Track angle | 69° S | 67° S | 71° S
*Gyro angle | 008½ | 009 | -010
*Depth set | 6 | 8 | 6
*Power | High | High | High
*Hit or Miss | Hit | Hit | Miss
*Erratic | No | No | No
(Yes or No) | | |
*Mark torpedo | 14-3A | 14-3A | 14-3A
*Serial No. | 24398 | 25979 | 26088
*Mark exploder | 6-5 | 6-5 | 6-5
*Serial No. | 12403 | 7264 | 10806
*#Actuation set | Contact | Contact | Contact
*#Actuation actual | Contact | Contact | Contact
*Mark warhead | 16-1 | 16-1 | 16-1
*Serial No. | 11129 | 3072 | 11375
*Explosive | Torpex | Torpex | Torpex
Firing interval | 8 sec. | 8 sec. | 8 sec.
Type spread | Divergent | Divergent 0 | Divergent 2R/
Sea conditions | 2 | 2 | 2
Overhaul activities | SUB*Base | U.S.S. | Navy 137
| PHTH | Holland |
Remarks - One miss due to | : | spread u.s. |

*..Enter for each torpedo fired
#..Enter whether set for contact or magnetic or only contact
actuation when applicable and onnext line, your nest
estimate of type of actuations actually resulting.

(36)

— page 64 —
U.S.S. REDFIN TORPEDO ATTACK NO. 4B PATROL NO. 2.
Time: 0133 H Date: 16 April 1944 Lat: 7°-04'N Long: 123°-27'

DESCRIPTION
Third ship in column an unidentified 8000 ton AK

SHIP(S) SUNK
1 AK 8000 Unidentified.

DAMAGE DETERMINED BY
Observed two hits. Ship was not present when I returned
later to the scene of attack. Two escorts were at scene
engaged in picking up survivors.

Target Draft: 12 Course: 3000 Speed: 11.0 Range: 2800 yds(at firing)

OWN SHIP DATA
Speed: 6.0 Course: 180 Depth:Surface. Angle: 0(at firing)

FIRE-CONTROL AND TORPEDO DATA
Similar to attack No. 4A except that this ship had not started turn,
Used sight estimate of angle on the bow.

(37)

— page 65 —
TT. CK NO. #4 B
| | No. 4 | No. 5 | No. 6 |
|---|---|---|---|
| Tubes fired | | | |
| *Track angle | 66 S | 68 S | 60 S |
| *Gyro angle | 006½ | 006½ | 002½ |
| *Depth set | 8 | 8 | 8 |
| *Power | High | High | High |
| *Hit or miss | Hit | Hit | Miss |
| *Erratic (Yes or No) | No | No | No |
| *Mark of torpedo | 14-3. | 14-3. | 14-3. |
| *Serial no. | 25922 | 24572 | 40487 |
| *Mark exploder | 6-5 | 6-5 | 6-5 |
| *Serial no. | 6631 | 12278 | 7830 |
| *#Actuation set | Contact | Contact | Contact |
| *#Actuation actual | Contact | Contact | Contact |
| *Mark warhead | 16-1 | 16 | 16-1 |
| *Serial no | 11151 | 11168 | 11694 |
| *Explosive | Torpex | Torpex | Torpex |
| Firing interval | 8 sec. | 8 sec. | 8 sec. |
| Type spread | Divergent | Divergent | Divergent |
| Sea conditions | 2 0 | 2 2 R | 2 2 L |
| Overhaul activities | J.S.S. [HANDWRITTEN: Holland] | Navy 137 | Navy 137 |
| | | | |
| Remarks - One missed due to . . . spread . . . | *..Enter for each torpedo fired. | #..Enter whether set for contact or magnetic or only contact | | | |
| actuation when applicable and on next line, your best | | | |
| estimate of type actuations actually resulting. |

— page 66 —
U.S.S. REDFIN (SS272)
S3272/A16-3
Seri. 1 014
CONFIDENTIAL
2 May 1944
Subject: U.S.S. Redfin, Report of War Patrol No.2.
(I) MINES

No mines nor vessels engaged in laying of or
sweeping mines were sighted. What was thought
to be the tip of a vessels mine sweeping gear
was sighted at 0610 on 2 April at Lat:5-29N,
Lon:126-43E. This object floated so high in
the water and moved so freely with the motion
of the water that it is not considered possi-
ble for it to have been a mine or a depth charge
towed astern of a vessel. A sketch is appended
hereto.

(J) ANTI-SUBMARINE MEASURES AND EVASION TACTICS

Little anti-submarine activity was encountered
during this patrol. There seems to be a nightly
patrol of probably not more than one submarine
along the southwest coast of Mindanao about 10
miles off the beach. This patrol goes as far
southeast as Sarangani Islands and as far north-
west as Hilbuk on Mindanao; however he may go
out into Moro Gulf or up the coast to Lebak.
Pote type planes carry only two depth charges
and try to get them off as quickly as possible
once they make contact with a submarine. The
Redfin was attacked at 0716 on 26 April off the
Sima Islands at the lower end of Makassar Strait.
I evaded the depth charges by diving to 200 ft.
at 80 feet I closed all vents and turned 90°
to the right with full rudder and full speed.
I did not open the vents again to let out the
residual air until I felt sure the attack was
over. The first charge sounded astern apparently
close to the diving point and the second on the
port hand along the track we had last been seen
on.

(K) MAJOR DEFECTS AND DAMAGES

On 22 March # 1 IC Motor Generator began vibrating
excessively. Ships force replaced the bearing in
the generator and ground down the slip rings and
replaced the brushes. This did not remedy
vibration. Secured this Motor Generator for the
remainder of patrol. We could have used it only
in emergency.

(39)

— page 69 —
SS272/.A.16-3
Serial 014
CONFIDENTIAL

U.S.S. REDFIN (SS272)

2 May 1944.

Subject: U.S.S. Redfin, Report of War Patrol No.2.

— page 70 —
9
U.S.S. REDFIN (SS272)

SS272/16-3
Serial 014
CONFIDENTIAL                                            2 May 1944.

Subject: U.S.S. Redfin, Report of War Patrol No.2.

— page 71 —
S-272/A16-3
Serial 014
CONFIDENTIAL

U.S.S. REDFIN(SS272)

2 May 1944.

Subject: U.S.S. Redfin, Report of War Patrol No.2

(Q) PERSONNEL

The performance of the officers and men was under
all conditions in keeping with the highest tradition
of the service. I was particularly impressed on the
morning of 16 April by the eagerness with which they
manned their battle stations for what turned out to
be two escorts. They had just gone through almost
ten hours of continuous battle station which included
two attacks followed by a depth charge attack.

The high state of training of this crew is a credit
to the first Commanding Officer Commander Robert D.
King, U.S.N. and to Lieutenant Commander Maurice W.
Shea, U.S.N., the present executive officer.

Lieutenant Commander Maurice W. Shea's fine work
in organizing and running the fire-control party,
his excellent navigation and his all around know-
ledge of submarine warfare was of unestimatable
value on this patrol. He is a thoroughly capable
officer and should be given a command at an early
date.

Special credit is given Lieutenant Charles K. Miller,
U.S.N., the Engineering Officer for his outstanding
performance of duty as the Officer of the Deck
on surface attacks and as Diving Officer submerged.
His coolness during attacks and good judgment was
a great help.

(R) MILES STEAMED - FUEL USED

Fremantle to area3502 miles---37,112 gals.
In area4309 miles---40,568 gals.
Area to Fremantle2160 miles---28,625 gals.

(S) DURATION

Days enroute to area-------13
Days in area23
Days enroute to base------- 8
Days submerged18

(44)

— page 72 —
U.S.S. REDFIN(SS272)

SS272/.16-3
Serial 014
CONFIDENTIAL                                                              2 May 1944.

Subject: U.S.S. Redfin, Report of War Patrol No.12.

(T)             TORPEDOES       FUEL            PROVISION       PERSONNEL FACTOR
                4               10,500          14 days         14 days

                Limiting factor this patrol ORDERS

(U)             REMARKS
                No remarks.

(45)

— page 73 —
FC5-16/A16-3
Serial # 0295

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

FIRST ENDORSEMENT to
CO USS REDFIN Conf. ltr.
SS272/A16-3 serial 014
dated 2 May 1944, Report
of 2nd War Patrol.

Subject:

1.
Commanding Officer, covered a period of forty-four days, twenty-three
days being spent in assigned areas.

2.
manner, with area coverage being excellent.

3.
different torpedo attacks.

Attack #1
Class Destroyer resulted in two hits out of three torpedoes fired.

Attack #2
escorted by a destroyer. The target was sighted during daylight and
tracked until dark in order to make a night surface approach. Due to
poor radar performance and a zig at time of firing, all four torpedoes
fired missed.

Attacks #3 and #4
escorted by three escorts. At 2236, 15 April, the first attack was
made on the surface and six torpedoes were fired using divided fire
of three torpedoes at each of two ships. The REDFIN then pulled clear
and reloaded and came in for the second attack at 0133, 16 April. The
convoy at this time consisted of three ships and three escorts. Divi-
ded fire was again used on two of the remaining three ships. Eight
torpedoes were observed to hit on four different ships.

- 1 - (Es)
U.S.S. RASHER, Flagship,
12 May 1944.

From: The Commander Submarine Squadron SIXTEEN.
To : The Commander-in-Chief, UNITED STATES FLEET.
Via : The Commander Submarines, SEVENTH FLEET.
The Commander SEVENTH FLEET.

U.S.S. REDFIN (SS272) - Report of SECOND War Patrol -
Comment on.

The second war patrol of the REDFIN, the first for the

The patrol was conducted in an aggressive and determined

Twenty torpedoes were fired for twelve hits in four

A submerged periscope attack on a single FUBUKI Group

This attack was made on a cruiser of the KIMO Class

Attacks #3 and #4 were made on a five-ship convoy

— page 74 —
FC5-16/A16-3
Serial # 0295

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

Subject: U.S.S. REDFIN (SS272) - Report of SECOND War Patrol -
         Comment on.

— page 75 —
6 085
FE24-71/A16-3 UNITED STATES NAVY 12/gr
Serial: 0464 19 May 1944.

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

SECOND ENFORSEMENT to:
USS.REDFIN (SS272) Con. 014
SS272/A16-3 Serial 014
dated 2 May, 1944.
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. REDFIN (SS272) - Second War Patrol -
Comment on.

1. REDFIN's second patrol, the first for the
Commanding Officer as such, was conducted in the CELEBES
SEA Area. The remarks of the Commander Submarine Squadron
SIXTEEN are concurred in.

2. The entire patrol was marked by most commend-
able aggressiveness and persistence in seeking the enemy and
inflicting damage once contact was made. The daring manner
in which REDFIN attempted to execute her Special Mission and
the unflinching courage displayed by the landing party is an-
other example of the high calibre of our Submarine Personnel.

3. This patrol is designated as "Successful" for
purposes of award of the Submarine Combat Insignia.

4. The Force Commander extends his most sincere
congratulations to the Commanding Officer, Officers, and Crew
of the REDFIN on this very excellent patrol in which the
following severe damage was inflicted on the enemy:

SUNK
1 - DD (AKIGUMO) 1,500 Tons
1 - AO (Large Unidentified) - - - 10,000 Tons
1 - AK (Large Unidentified) - - - 7,500 Tons
1 - AK (Medium Unidentified) - - - 4,000 Tons
1 - AK (NOJIMA MUROTO TYPE) - - - 7,190 Tons
Total - 30,190 Tons

R. W. CHRISTIE.

[STAMP: FILMED]
- 1 -

— page 76 —
FE24-71/A16-3 UNITED STATES NAVY 12/gr
Serial: 0464 19 May 1944.

C-O-N-F-I-D-E-N-T-I-A-L
SECOND ENDORSEMENT TO:
USS.REDFIN Conf. Ltr.
SS272/A16-3 Serial 014
dated 2 May, 1944.
Report of Second War
Patrol.

Subject: U.S.S. REDFIN (SS272) - Second War Patrol -
Comment on.

DISTRIBUTION:
Cominch (3) - (Direct)
Vice Opnav (2) - (Direct)
Vice Opnav Op-23o (1)
ComlstFlt (1)
Com2ndFlt (1)
Com3rdFlt (1)
Com7thFlt (2)
ComSubs1stFlt (4)
ComSubs2ndFlt (4)
CTF-71 (4)
CTF-72 (2)
CSS-12 (1)
CSS-16 (1)
DivComs Ron-12 (1)
DivComs Ron-16 (1)
S/M School N.L.Conn. (2)
Each S/M W.A. (1) - NOT TO BE TAKEN TO SEA - BURN.

[SIGNATURE: P. F. Straub Jr.]
P. F. STRAUB, JR.
Flag Secretary.

[HANDWRITTEN: (3)]
- 2 -
[HANDWRITTEN: 50]

— page 77 —
U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16-3
Serial 03
[STAMP: DECLASSIFIED]
[CROSSED OUT TYPED TEXT: CONFIDENTIAL]
14 July 1944.

From: The Commanding Officer, U.S.S. REDFIN(SS272)
To : The Commander in Chief, United States Fleet.
Via : (Official Channels).

Subject: U.S.S. REDFIN(SS272), Report of War Patrol
number THREE.

Enclosure: (A) Subject Report.

1. Enclosure (A), covering the Third War
Patrol of this vessel conducted in the Sulu Sea during
the period 26 May 1944 to 14 July 1944 is forwarded
herewith.

[SIGNATURE: M.H. Austin]
M.H. AUSTIN.

DECLASSIFIED-ART. 0445, OPNAVINST 5510.1C
BY [HANDWRITTEN: OP-09B2C] DATE [HANDWRITTEN: 6/1/72] [STAMP: DECLASSIFIED]

[HANDWRITTEN: FILMED]
[HANDWRITTEN: 83425]

— page 78 —
U.S.S. REDFIN(SS272)

SS272/A16-3
Serial 033
CONFIDENTIAL
Subject: U.S.S. REDFIN(SS272) Report of War Patrol
No.3.

— page 79 —
U.S.S. REDFIN(SS272)

SS272/A16-3
Serial 033
CONFIDENTIAL
Subject: U.S. S. Redfin Report of War Patrol No.3.

— page 80 —
U.S.S. REDFIN

SS272/A16-3
Serial 033
CONFIDENTIAL

Subject: U.S.S. Redfin Report of War Patrol No.3.

2 June 1944 (8th day)

0315 Sighted and identified Nusa Besar Island bearing 006 T.,
     range about 15 miles. Range unit on SJ Radar went out.
     was only able to obtain bearings on contacts with a good
     guess at range. We had experienced a strong southwesterly
     set causing us to be a little over an hour behind our
     schedule.
0420 Entered Lombok Strait.
0553 Submerged about three quarters of the way through Lombok
     Strait. Commenced repair of SJ Radar range unit.
1600 SJ Radar back in commission.
1846 Surfaced about 6 miles north of Lombok Strait having bucked
     a 2 knot southerly current all day. No contacts in strait.
     Headed up towards Makassar Strait.
2012 Sighted sailboat and avoided on the surface.
     Moon Position: Lat: 8-27S; Long: 115-51

3 June 1944 (9th day)

0722 Submerged about 25 miles southeast of Lima Islands.
1200 Sighted a sailboat.
1545 Surfaced 9 miles 090 T. from Lima Islands and headed
     up Makassar Straits.
     Moon Position: Lat: 5-16.0S; Long: 117-16.5E

4 June 1944 (10th day)

0124 Noted interference on SJ Radar. Presumed this to be south-
     bound Cabrilla which was expected at this time.
0352 Sighted sailboat or debris, avoided on the surface.
0600 Submerged about 40 miles northwest of Cape William.
1558 Surfaced.
2225 Sighted sailboat and avoided on surface.
     Moon Position: Lat: 2-07.5S; Long: 118-37E

5 June 1944 (11th day)

0404 Passed Tg. Nangkalibat abeam to port, distance 11 miles.
     Cleared Makassar Straits. Decided to remain on the surface
     in order to get in position to patrol traffic lane between
     Sibutu Passage and Tarakan. During the day sighted more
     than the normal number of large logs and tree trunks which
     would have made navigation at night a hazzard.
1402 Submerged to kill time in order not to arrive at Sibutu
     during daylight.
1710 Surfaced.
2113 Noted interference on SJ Radar from a position about 15
     miles south of Alice Channel. Presumed this to be Bluefish.
2242 Sighted land marks around Sibutu Passage. Commenced pat-
     rolling between Sibutu and Alice Channel on a line 232 T -
     052 T a distance of 10 miles off reefs. I presumed this
     to be the most likely route followed by ships between

-3-

— page 81 —
SS272/A16-3
Serial 033
CONFIDENTIAL
Subject: U.S.S. REDFIN(SS272)
          U.S.S. Redfin Report of War Patrol No.3.
          5 June 1944 (con't)

Sibutu and Tarakan.
Noon Position: Lat: 2-41N; Long: 119-29.5

6 June 1944 (12th day)

0126 Made Radar and sight contact on what appeared to be a
     US submarine, bearing 143 T - range 12000 yards. Re-
     ceived very strong radar interference from that bearing.
     Presumed it to be Bluefish.
     Ship contact No.4.
     Did not attempt to contact Bluefish as I had made no
     enemy contacts and we seemed to be patrolling on parallel
     courses about 6 miles apart.
0145 Received word of Puffer's success. Decided that there
     would be little traffic through Sibutu for the next
     few days so headed up to get as far through Sibutu
     as possible prior to daylight.
0452 Entered Sibutu Passage.
0510 Sighted what appeared to be a destroyer in the channel
     between Bongao and Simunul Islands. Bearing 030 T -
     range about 30000. This ship evidently went into
     anchorage at Tawi Tawi as it was not seen again.
     Ship contact No.5. Submerged.
1035 Cleared Sibutu Passage having received a 2 knot north-
     erly set.
1851 Surfaced and headed up to patrol traffic lane between
     Balabac and Cebu while enroute to execute Special Mission
2004 Passed west of Pearl Bank.
     Noon Position: Lat: 5-11N; Long: 119-35E

7 June 1944 (13th day)

0441 Sighted Bancoran Island and later passed 12 miles
     to the eastward.
0630 Sighted peaks on Palawan.
0635 Arrived on normal traffic lane between Balabac and
     Tubbataba Reef. Commenced patrolling on station.
0735 Submerged to avoid possible detection prior to execution
     of Special Mission.
1545 Surfaced and continued patrol.
1800 Headed over to conduct Special Mission, which is the
     subject of a special report and will not be covered in
     this report.
     Noon Position: Lat: 08-15N; Long: 119-36E

-4-

— page 82 —
U.S.S. REDFIN(SS272)
SS272/A16-3
Serial 033
CONFIDENTIAL
Subject; U.S.S. Redfin Report of War Patrol No.3.

— page 83 —
U.S.S. REDFIN(SS272)
SS272/A16-3
Serial 033
CONFIDENTIAL
Subject: U.S.S. Redfin Report of War Patrol No. 3.

— page 85 —
U.S.S. REDFIN(SS272)

S-272/A16-3
Serial 033
CONFIDENTIAL
Subject: U.S.S. Redfin Report of War Patrol No.3.

13 June 1944(18th day)

0504 Submerged 5 miles bearing 290 T from Bongao Island.
0547 Sighted type Rufe plane patrolling between Sibutu Hill
     and Bongao Island.
     Aircraft contact No.9.
0616 Sighted what appeared to be 2 heavy cruisers - planes on
     catapults; 4 destroyers and 1 chidori type torpedo boat
     coming out of Tawi Tawi anchorage. Attempted to attack
     a heavy cruiser but failed due to extremely radical zig
     plan. Each leg was about two or three minutes in length
     and some zigs were as high as 150°. These targets dis-
     appeared to the northwest towards the coast of Borneo.
     Ship contact No.8.
0749 Observed the Chidori and 4 destroyers return to Bongao
     Channel at that time noted more ships coming from Tawi
     Tawi anchorage.
     Ship contact No.9.
0900 Main body of Jap fleet passed Redfin. Nearest range on
     a big ship was 4500 yards on a FUSO Class Battleship. It
     is my guess that the Japs sent the cruisers out at 0616
     ahead of the main body so that any submarines would dis-
     close its presence prior to the approach of the main body.
     Had I been able to get in an attack on the first group I
     would never have seen the second.
     This second force consisted of:-

6 Carriers - | With planes on deck.
4 Battleships - | 2 FUSO Type &
             | 2 U/I
5 Heavy Cruisers - | No planes on catapults, but booms
             | and slides rigged for recovery of
             | aircraft.
1 Light Cruiser - | Yubari Type.
2 Destroyers - | (These are in addition to the four
             | in the first sortie which returned
             | to pick up the main body.)

The zig plan used was similar to that of the first force.
An attempt was made to attack a Fuso Class Battleship but
was unable to close. The above is an actual count of
ships seen. There could have been more destroyers and
possibly more cruisers but it is not likely that there
were more than the 4 battleships and 6 carriers in this
task force.
The air screen seemed to have been furnished by the
cruisers as their planes were not on the catapults and
they all were rigged for recovery of aircraft.
Several type Rufe planes were seen overhead.
Aircraft contact No.9.

-8-

— page 86 —
U.S.S. REDFIN(SS272)

SS272/A16-3
Serial 033
CONFIDENTIAL

Subject: U.S.S. Redfin Report of War Patrol No.3.
13 June 1944 (con't)

All carriers had about one-half of their flight deck
filled with planes.
One large destroyer had what appeared to be a fire-control
radar antenna just over the bridge. It was similar to
our Fox Charlie type radar antenna. No other ship was
seen to have this equipment, however, at the ranges at
which they passed it would have been easy to have over-
looked this item.
0930 Noted bad air leak forward. Bled down No.5 impulse bottle
     and leak stopped. A gasket was renewed on this bottle
     during last refit.
1005 Observed tops of a Fuso type battleship close to the
     coast of Borneo - range 30000 yards, course 320 T. This
     was the last contact with this force.
1905 Surfaced and headed over to a spot about 7 miles off
     Borneo.
2000 Transmitted contact report and headed back over to patrol
     northern entrance of Sibutu Strait.
2010 Sent man on deck to attempt to repair No.5 impulse bottle
     leak - no success.
Noon Position: Lat: 4-59N; Long: 119-40E

14 June 1944 (19th day)

0510 Submerged about 5 miles bearing 290 T from Bongao Island.
1907 Surfaced.
2016 Noted interference on SJ Radar caused by similar radar.
     The interference seem to come from the south so presumed
     it to be Haddo.
2030 Lost radar interference.
Noon Position: Lat: 5-00 N; Long: 119-39.5E

15 June 1944 (20th day)

0505 Submerged off Bongao Island.
0548 Sighted two trawler type AS vessels apparently engaged
     in a search. One vessel towed a small row boat astern.
     Avoided. Those ships disappeared to the northward.
     Ship contact No.10.
1433 Aircraft contact No.10 - type Pete circling over Sanga
     Sanga Island.
1900 Surfaced.
1930 SJ contact on small ship bearing 042 T - range 8800 yards.
     Determined course 260 T - speed 6 knots. Screws sounded
     similar to those heard on trawler contact at 0548 there-
     fore presumed this to be one of the above trawlers that
     had to stay out all night.
     Ship contact No.11.
-9-

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U.S.S. REDFIN(SS272)

SS272/A16-3
Serial 033
CONFIDENTIAL

Subject: U.S.S. Redfin Report of War Patrol No.3.

— page 89 —
SS272/A16-3
Serial 033
CONFIDENTIAL

U.S.S. REDFIN(SS272)

Subject: U.S.S. Redfin Report of War Patrol No. 3.

21 June 1944 (con't)

1843 Surfaced. Range to A/S vessels - 15000 yards. Continued
     retirement. Lost contact at 25000 yards.
2116 Changed course to the eastward in order to approach
     Surigao Strait from the south. Received instructions to
     patrol Surigao Strait, which we were already doing.
     Noon Position: Lat: 9-52N; Long: 125-10E

22 June 1944 (27th day)

0158 Arrived off Surigao Strait and commenced patrolling
     southern side in the vicinity of Bilas Point on Mindanao.
0500 Submerged and tried to work way up into the strait but
     the southerly current was too strong.
1328 Sighted two type XAM patrol boats making a swoop to the
     south along the coast of Mindanao.
     Ship contact No.16.
     The two boats appeared to be the two escorts of the con-
     voy attacked on 21 June. Avoided to the eastward.
1802 Sighted two type XAM patrol boats approaching from the
     southwest on course 060 T.
     Ship contact No.17.
     Lost sight of these boats in the vicinity of Binit Point.
1857 Surfaced and commenced patrol across Surigao Strait.
     Noon Position: Lat: 9-37N; Long: 125-13E

23 June 1944 (28th day)

0447 Submerged 3 miles south of Binit Point.
0715 Sighted one type XAM patrol boat making a swoop to the
     south along the coast of Mindanao.
     Ship contact No.18.
1100 Sighted one type XAM patrol boat returning from the
     southwest. This patrol went south around the eastern
     side of Mindanao.
     Ship contact No.19.
1314 Sighted two type "A" landing craft heading northwest
     from Bilas Point on Mindanao.
     Ship contact No.20.
     These craft evidently came from the eastern side of
     Mindanao.
1545 Sighted one type XAM patrol boat making a swoop up to-
     wards Limasawa Island.
     Ship contact No.21.
1723 Sighted one type XAM patrol boat coming back from his
     swoop up north.
     Ship contact No.22.
1847 Surfaced and commenced patrol off Binit Point. Numerous
     contacts during night but presumed them all to be sail-
     boats as their speed was very slow. There is hardly over
     a time night or day that there isn't several sailboats
     in sight. Noon Position: Lat: 9-53N; Long:125-12.2E
     -12-

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U.S.S. REDFIN(SS272)

SS272/A16-3
Serial 033
CONFIDENTIAL

Subject: U.S.S. Redfin Report of War Patrol No.3.

24 June 1944 (29th day)

0455 Submerged and commenced patrolling on a line between
     Binit Point and the north end of Limasawa Island.

0720 Sighted what appeared to be the same two medium Able
     Tenders attacked on 21 June, with the same two XAM's
     escorts.
     Ship contact No.23.
     The first ship was similar to a Yokohama Maru and the
     second ship was similar to the Anyo Maru. These vessels
     were approaching from the east side of Mindanao through
     Surigao Strait and were heading up towards the pass north
     of Limasawa Island. The ships were zigging independently
     which made it hard to make out their formation. However,
     decided to try shooting three torpedoes at each. The
     escorts were out on the beams of the formation.

0816 Commenced firing salvo of three torpedoes at first ship,
     8 second intervals - range 1400 yards, 90 port track -
     speed 8 knots, depth set 6 ft. continuous periscope bear-
     ing. Second target at this time became blocked out
     completely by the first. Checked and saw port escort
     very close and coming in fast with a zero angle on the
     bow so I took evasive action to the southward. Torpedoes
     were seen to be running straight for the target.

0817 Heard 2 hits. Not seen as periscope was trained on
     escorts.

0816- Received 22 depth charges - some of them fairly close.
0930

1002 Took look and saw second target and both escorts milling
     around in the vicinity of the attack, apparently picking
     up survivors. I looked closely for the ship which had
     been hit but could not see it.
     I believe that it sank.

1015 The three remaining ships were seen to settle down on an
     almost northerly course indicating that they were con-
     tinuing their voyage. I decided to go around the south-
     ern end of Limasawa Island to the western side and possi-
     bly work the same traffic lane between Limasawa Island
     and Sanigao Channel.

1100 Lost sight of ships.
1122 Was very busy checking torpedoes and getting trim when
     sound reported screws to the northward. Took a look and
     saw what appeared to be second target with one escort
     close aboard to port on a southerly course. The second
     escort was about 3 miles astern. The range was about
     10000 yards, angle on bow 80 starboard. It appeared
     that instead of running north of Limasawa Island the
     target had decided to go out through Surigao Strait.
     I did not know quite what to make of her actions but
     went to the normal approach course just in case she
     changed her mind. Noted a lot of people on deck and
     around bridge.

-13-

— page 91 —
U.S.S. REDFIN(SS272)

SS272/A16-3
Serial 030
CONFIDENTIAL

Subject: U.S.S. Redfin Report of War Patrol No.3.

24 June 1944 (con't)

1155 The target seemed to be coming around gradually to a
     westerly course. This put her almost over the spot where
     I thought the two escorts had lost their contact with
     the Redfin. However if this was no trap her only course
     of action would be to pass south of Limasawa Island.
     Perhaps they thought the Redfin had retired to the north
     into Bogos Bay. I changed course to 180 T and as it turned
     out I had to go ahead at standard speed in order to get
     off the track. I didn't want to be run over for fear
     of a towed depth charge. I believe the Jap convoy com-
     mander simply made a very bad mistake, but I still can
     not see why anyone would return so quickly to the spot
     of an attack.
1222 Commenced firing a salvo of 4 torpedoes from aft at 8
     second intervals - range 1200 yards - 130° port track -
     speed 9 knots. Continuous periscope bearing. Watched
     the torpedoes run down the range. It appeared that two
     were going ahead and two were going to hit.
1223- Heard one low order explosion. People throughout the
1223-30thought it was a hit, however it did not shake the Redfin
     as did the previous hits that morning. All personnel in
     the conning tower heard the explosion plainly over the
     sound headsets.
1228 Received 12 depth charges, some of which were fairly
1400 close but no material damage, except a tube in the SJ
     Radar.
1428 Took look - only one escort in sight.
1458 Sighted type Jake plane over escort.
     Aircraft contact No.12.
1600 Lost sight of escort searching area between Bohol and
     Limasawa Island.
1646 Sighted type Pete plane.
     Aircraft contact No.13.
1905 Surfaced and headed down to Camiguin Island to tune
     SJ Radar.
2015 Headed east to approach Surigao Strait from the south
     along the coast of Mindanao.
     Noon Position: Lat: 9-53N; Long: 125-06.2E

25 June 1944 (30th day)

0455 Submerged about 6 miles south of Surigao Strait and tried
     but failed to reach the straits because of southerly
     current.
1239 Sighted three patrol boats - 2 XAM (our old friends) and
     1 small unidentified. These boats were making a sweep
     south along the coast of Mindanao.

-14-

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SS272/A16-3
Serial 033
CONFIDENTIAL

Subject: U.S.S. REDFIN Report of War Patrol No.3.

— page 93 —
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SS272/A16-3
Serial 033
CONFIDENTIAL

Subject: U.S.S. Redfin Report of War Patrol No. 7

26 June 1944 (con't)

1846 Surfaced and headed down towards Caniguin Island.
2120 Transmitted report of attack and headed down to
     patrol off Tagolo Point on the northeast coast of
     Mindanao.
     Noon Position: Lat: 9-52.5N; Long: 125-02E

27 June 1944 (32nd day)

0532 Submerged off Tagolo Point.
1730 Surfaced and headed up to patrol off Guimaras Strait.
     Noon Position: Lat: 8-49N; Long: 123-08E

28 June 1944 (33rd day)

0400 Arrived 5 miles off Danjugan Island at the western-
     most point of Negros and commenced patrol.
0523 Sighted the mast of a ship bearing 015 T. Submerged.
0533 Sighted the masts of what was later identified as three
     Shigure-Class destroyers on course about 200 T. bear-
     ing 014 T - speed 20 knots - range 20000 yards.
     Changed course to 270 T. to put myself across their
     track and take what shots presented themselves. These
     ships had nothing that resembled a radar. They were
     very weather-beaten and rusty. The ships were in a
     "V" formation at a interval of about 3000 yards. The
     formation were zigzagging simultaneously on about 4 min-
     ute logs.
     Ship contact No. 29.
0600 Was all set up to fire at port target on about 80°
     port track - range approximately 1200 yards when the
     target zigged left and passed about 200 yards ahead
     of Redfin. I do not think I would have hit with a
     small track using the large gyro I would have had to
     use.
1827 Surfaced and continued patrol on an east and west
     line.
     Noon Position: Lat: 9-53.7N; Long: 122-19.5E

29 June 1944 (34th day)

0527 Submerged and continued patrol 3 miles off shore.
0832 Sighted Pete type plane on a southeasterly course.
     Aircraft contact No.15.
1735 Surfaced and continued patrol.
2015 Opened out to the west to transmit report of sighting
     3 destroyers. Had not thought this force important
     enough to report but since information of this nature
     was requested I decided to send in the report.

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Serial 033
CONFIDENTIAL
Subject: U.S.S. Redfin Report of War Patrol No.3.
               29 June 1944 (con't)

2151 Transmitted report.
     Noon Position: Lat: 9-55N; Long: 122-19.5E

               30 June 1944 (35th day)

0010 PLUTA, Leonard Joseph, TM2c, 234 39 73, USN, was admitted
     to the sick-list: Diagnosi: Appendicitis - Acute (Meli-
     cal No.304). Sulfa-therapy and ice-packs treatment were
     started immediately. I decided to wait a few days to
     see how Pluta responded to the treatments before re-
     porting case.
0317 Arrived back at patrol station off Danjugan Island.
0530 Submerged.
0830 Sighted small motor-launch towing a small canvas covered
     barge, on a southerly course in very close to the shore
     line.
     Still contact No.30.
1830 Surfaced and continued patrol.
2207 Opened out to the westward to patrol on the surface for
     one day in the vicinity of Lat: 9-00N.Long:121-50E.
     All of us were getting tired of so much submerged work.
     Noon Position: Lat: 9-52.5N.Long: 122-18.5E

               1 July 1944 (36th day)

0628 Arrived at desired point and commenced patrolling on an
     east west line.
1950 Transmitted message reporting case of acute appendicitis.
2040 Headed back to patrol traffic lane from Guimaras Strait.
     Noon Position: Lat: 8-52.3N. Long: 121-44E

               2 July 1944 (37th day)

0520 Submerged 3 miles off Camponanes Bay. Looked into bay
     to see if it were used as an overnight anchorage for
     convoys. There were no ships in the bay.
1834 Surfaced and headed up to make a sweep across Panay Gulf
     and to patrol tomorrow off Naso Point the southwestern
     tip of Panay.
2216 Received instructions to take patient to Darwin and to
     return to Freemantle. Headed down towards Sibutu Strait.
     Noon Position: Lat: 9-42.3N. Long: 122-18.7E

-17-

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U.S.S. REDFIN(SS272)
SS272/A16-3
Serial 033
CONFIDENTIAL

Subject: U.S.S. Redfin Report of War Patrol No.3.

3 July 1944 (38th day)

0640 Sighted low flying Pete type aircraft bearing 270 T.
       range about 15 miles. This plane did not appear to
       sight Redfin and was soon lost from sight in haze.
       Aircraft contact No.16.
0802 Made radar contact on unidentified aircraft at range
       11 miles closing rapidly. Submerged when range reached
       8½ miles.
       Aircraft contact No.17.
0905 Surfaced.
0940 Sighted Pete type aircraft on easterly course at a
       range of about 12 miles. This plane did not appear
       to sight Redfin.
       Submerged to avoid detection.
       Aircraft contact No.18.
       The Jack had transmitted one message and the Redfin
       had transmitted two in this vicinity in the past four
       days. I imagine the Jap is well convinced that there
       are submarines in this area.
1226 Surfaced.
1954 Passed between Doc Can Island and Pearl Bank.
2121 Started getting interference on SJ Radar from all
       directions. Presumed it must be the Mingo or Jack.
2151 Sighted what appeared to be a submarine bearing 195 T.
       Ship contact No. 31.
       No radar contact was made. Changed course to the west-
       ward to avoid. The target evidently headed east at
       high speed as the bearing changed rapidly. Presumed
       this to be USS Mingo making north passage of Sibutu.
2212 Sighted what appeared to be a second submarine bearing
       280 T.
       Ship contact No. 31.
       Still no radar contact. The moon was almost full and
       the night was very clear. Changed course to the south
       to make passage through Sibutu. The second target
       evidently reversed course as he was soon lost from
       sight. Presumed this second target to be USS Jack.
2258 Lost radar interference.
       Noon Position: Lat: 7-29N; Long: 120-50E

4 July 1944 (39th day)

0058 Cleared Sibutu Strait and headed down towards Bangka
       Passage.
0135 SJ Radar went out of commission.
0325 SJ Radar back in commission, having used our last spare
       condenser (part 669C-19). On last failure, this time we
       had to use a jury-rig. This part should be redesigned
       or sufficient spares provided.

-18-

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U.S.S. PEDFIN(SS272)
SS272/A16-3
Serial 033
CONFIDENTIAL
Subject: U.S.S. Redfin Report of War Patrol No.3.

4 July 1944 (con't)
1815 Converted #3 FBT for use as a ballast tank. Time
     required 20 minutes.
     Noon Position: Lat: 3-29.3N; Long: 122-20

5 July 1944 (40th day)
0116 Cleared Bangka Passage and headed down Molukka Passage.
0526 Made trim dive to wash out #3 FBT.
0555 Surfaced.
1309 Made radar contact on an unidentified aircraft at
     range 12 miles - closing rapidly.
     Submerged.
     Aircraft contact No.20.
1405 Surfaced.
     Noon Position: Lat: 1-48S; Long: 126-00E

6 July 1944 (41st day)
0208 Passed west of Buru Island and headed towards Wetar
     Strait.
1715 Passed Goenoeing Api abeam to port.
1940 Entered passage east of Wetar and Timor Islands.
     Noon Position: Lat: 5-32 Long: 125-53

7 July 1944 (42nd day)
0015 Cleared passage east of Timor.
0155 Commenced receiving interference on SJ Radar from what
     appeared to be a similar radar. Since I was expecting
     to pass the USS Hoe I presumed this interference to
     come from the Hoe.
0235 Made radar contact on a north bound target at range
     6900 yards bearing 081 T, also received strong radar
     interference from this direction I did not see the tar-
     get and did not investigate it as I felt sure it was
     the Hoe.
     Ship contact No. 32.
0345 Lost all radar interference.
0417 Noted radar interference again, this time to the west-
     ward.
0445 Made radar contact on a north bound target at range
     11400 yards bearing 249 T. Since the radar interference
     on this contact was much stronger and the target was
     picked up at a range at which I would expect to contact
     a U.S. submarine I presumed this target to be the Hoe
     and the previous contact to be an unidentified radar
     equipped ship. I did not sight this second target nor
     did I attempt to close to investigate it.
     Ship contact No. 33.
     -19-

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SS272/A16-3
Serial 033
CONFIDENTIAL

Subject: U.S.S. REDFIN(SS272) Report of War Patrol No.3.

— page 98 —
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SS272/A16-3
Serial 033
CONFIDENTIAL

Subject: U.S.S. Redfin(SS272) Report of War Patrol No.3.

12 July 1944 (47th day)

0640 Enroute Frecmnntle, W.A.
0652 Indo trim dive.
1000 Surfaced.
1600 Indo test discharge of battery.
Noon Position: Lat: 25-12 Long: 112-26

13 July 1944 (48th day)

0725 Enroute Frecmnntle, W.A.
Indo deep dive to test for leaks -
condition satisfactory, and leaks
noted in refit list.
0746 Surfaced.
Noon Position: Lat: 23-10S Long: 113-00E

14 July 1944 (49th day)

Arrived Fremantle, W.A. completing Third
War Patrol.

-21-

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SS272/A16-3
Serial 033
CONFIDENTIAL
Subject: U.S.S. Redfin(SS272) Report of War Patrol No.3.

                     12 July 1944 (47th day)

0640         Enroute Fremantle, W.A.
0652         Made trim dive.
1200         Surfaced.
             Made test discharge of battery.
             Noon Position: Lat: 25-12 Long: 112-26

                     13 July 1944 (48th day)

0725         Enroute Fremantle, W.A.
             Made deep dive to test for leaks -
             condition satisfactory, and leaks
             noted in refit list.
0746         Surfaced.
             Noon Position: Lat: 29-10S Long: 113-00E

                     14 July 1944 (49th day)

             Arrived Fremantle, W.A. completing Third
             War Patrol.

-21-

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Serial 033
CONFIDENTIAL

Subject: U.S.S. REDFIN Report of War Patrol No.3.

— page 103 —
U.S.S. REDFIN(SS272)

(F) SHIP CONTACTS

NG | TIME/ | L/L/ | TYPE | INITIAL | COURSE/ | HOW CON- | REMARKS
   | DATE  | LONG |      | RANGE YD| SPEED   | TACTED   |
---|-------|------|||||
1  | 1215  | 29-29S | SS Crevalle |         | 143 T   |          |
   | 27 May| 113-18E| SS Flasher | 14000   | 12 kts  | SD       |
2  | 1739  | 23-33S | SS Bone- |         | 186 T   |          |
   | 28 May| 113-32E| fish     | 13250   | 14 kts  | SD       |
3  | 2307  | 9-50S  | U/I      |         | 180 T   |          |
   | 1 Jun | 115-30E|          | 6700    | 6 kts   | R        |
4  | 0126  | 4-00N  | SS Blue- | 12000   | 052 T   |          |
   | 6 June| 119-17E| fish     |         | 12 kts  | SD       |
5  | 0510  | 4-38N  |          | 30000   | 040 T   |          |
   | 6 June| 119-36E| DD       |         |         | SD       |
6  | 0025  | 5-52N  | 1-AO     | 16000   | 040 T   | SN       | Damaged
   | 11 Jun| 120-42E| 1-SC     |         | 13 kts  |          | tanker.
7  | 1005  | 5-04N  | 1-Trawler| 6000    |         | P        | Apparently went
   | 12 Jun| 119-40E| type A/S |         |         |          | into Tawi Tawi
   |       |        |          |         |         |          | anchorage.
8  | 0616  | 5-04N  | 1-TB Chidori |     | 320 T   | P        | 1st sortie.
   | 13 Jun| 119-40E| 4-DD;2-CA| 10000   | 18 kts  |          |
9  | 0900  | 5-04N  | 4-BB(2-Fusd |     | 320 T   | P        | 2nd sortie.
   | 13 Jun| 119-40E| 2-U/I)   |         | 18 kts  |          |
   |       |        | 5-CA U/I | 10000   |         |          |
   |       |        | 1-CL Yubari;2-DD U/I;6-CV U/I |         |          |
10 | 0548  | 5-04N  | 2-Trawler| 6000    |         | P        | Engaged in A/S
   | 15 Jun| 119-40E| type A/S |         | 6 kts   |          | sweep.
11 | 1930  | 5-30N  | 1-Trawler| 8800    | 260 T   | R        | Patrolling.
   | 15 Jun| 119-47E| type A/S |         | 6 kts   |          |
12 | 0742  | 8-40N  | 4-Type "A" | 6000  | 240 T   | P        |
   | 19 Jun| 120-20E| landing craft |     | 6 kts   |          |
13 | 0822  | 9-35N  | 5-Type "A" | 4000  | 330 T   | P        |
   | 21 Jun| 125-10E| landing craft |     | 6 kts   |          |
   |       |        | 1-Motorboat|         |         |          |
14 | 1415  | 9-53N  | 2-AP     |         |         |          |
   | 21 Jun| 125-14E| 2-XAM    |         |         |          |
15 | 1800  | 9-50N  | 2-A/S    | 6000    | 243 T   | P        | Lost on radar
   | 21 Jun| 125-10E| U/I      |         | 6 kts   |          | after surfacing
   |       |        |          |         |         |          | at 25000 yards.
16 | 1328  | 7-26N  | 2-XAM    | 5000    | 180 T   | P        | Engaged in
   | 22 Jun| 121-26E|          |         | 6 kts   |          | A/S sweep.
17 | 1802  | 9-37N  | 2-XAM    | 5000    | 060 T   | P        | Patrolling.
   | 22 Jun| 125-00E|          |         | 6 kts   |          |
18 | 0715  | 9-51N  | 1-XAM    | 4000    | 180 T   | P        | Patrolling.
   | 23 Jun| 125-20E|          |         | 6 kts   |          |
19 | 1100  | 9-55N  |          | 4000    | 060 T   | P        | Patrolling.
   | 23 Jun| 125-15E| 1-XAM    |         | 6 kts   |          |

-23-

— page 104 —
(F) SHIP CONTACTS - Con't.
U.S.S. REDFIN(SS272)
NO|TIME/|LAT/|TYPE|INITIAL|COURSE/|HOW CON-|REMARKS
  |DATE |LONG|    |RANGE YD|SPEED  |TACTED  |
--|-----|----|----||-------||

— page 105 —
U.S.S. REDFIN (SS272).

(G) AIRCRAFT CONTACTS

NO | TIME/ | LAT/ | TYPE | INITIAL | COURSE/ | HOW CON- | REMARKS
   | DATE  | LONG |      | RANGE MI| SPEED   | TACTED   |
---|-------|------|------||||
1  | 0643  | 21-44N| King- | 8 MI    | -       | R        | Air escort for
   | 29 May| 113-02E| Fisher|         |         |          | Redfin & Harler
2  | 1449  | 21-37N| TBY   | 20 MI   | 090 T   | R        | Exchanged recogni-
   | 30 May| 113-00E|       |         | 120     |          | tion signals.
3  | 1137  | 7-11N | Betty | 12 MI   | 344 T   | SD       | Submerged to avoid
   | 9 Jun | 119-05E|       |         | 200     |          |
4  | 0123  | 5-44N | U/I   | 4 MI    | 145 T   | SN       | Submerged to avoid
   | 10 Jun| 119-34E|       |         | 300     |          |
5  | 0434  | 6-12N | U/I   | 6 MI    | -       | R        | Submerged to avoid
   | 11 Jun| 120-32E|       |         |         |          |
6  | 1403  | 5-08N | 3-Tote| 7 MI    | -       | P        | In formation over
   | 12 Jun| 119-40E|       |         |         |          | Sanga Sanga Is.
7  | 1738  | 5-04N | Rufe  | 3 MI    | -       | P        | Patrolling Sibutu
   | 12 Jun| 119-40E|       |         |         |          |
8  | 1825  | 5-04N | Rufe  | 3 MI    | -       | P        | Patrolling Sibutu
   | 12 Jun| 119-40E|       |         |         |          |
9  | 0900  | 5-04N | Several| -       | -       | P        | Patrolling Sibutu
   | 13 Jun| 119-40E| Rufe  |         |         |          |
10 | 1433  | 5-12N | Tote  | 10 MI   | -       | P        | Patrolling Sibutu
   | 15 Jun| 119-42E|       |         |         |          |
11 | 1455  | 9-53N | Tote  | 4 MI    | Convoy  | P        | A/S search
   | 21 Jun| 125-14E|       |         | duty    |          |
12 | 1458  | 9-51N | Jake  | 3 MI    | -       | P        | A/S search
   | 24 Jun| 125-15E|       |         |         |          |
13 | 1646  | 9-49N | Tote  | 3 MI    | -       | P        | A/S search
   | 24 Jun| 125-15E|       |         |         |          |
14 | 1106  | 9-49N | Jake  | 5 MI    | 180 T   | P        | A/S search
   | 26 Jun| 125-20E|       |         | 180     |          |
15 | 0832  | 9-57.5N| Tote  | 4 MI    | 135 T   | P        |
   | 29 Jun| 122-22E|       |         | 180     |          |
16 | 0640  | 7-38N | Tote  | 15 MI   | 150 T   | SD       |
   | 3 July| 120-56E|       |         |         |          |
17 | 0802  | 7-29N | U/I   | 11 MI   | -       | R        |
   | 3 July| 120-55E|       |         |         |          |
18 | 0940  | 7-35N | Tote  | 12 MI   | 090 T   | SD       |
   | 3 July| 120-55E|       |         | 200     |          |
19 | 0718  | 0-27N | U/I   | 8 MI    | -       | R        |
   | 5 July| 125-54E|       |         |         |          |
20 | 1309  | 00-40S| U/I   | 12 MI   | -       | R        |
   | 5 July| 126-15E|       |         |         |          |

-25-

— page 106 —
U.S.S. REDFIN(SS272)

(H) ATTACK DATA #1
U.S.S. REDFIN(SS272) TORPEDO ATTACK NO: 1 PATROL NO: 3
TIME: 0116 DATE: June 11, 1944. LAT: 6-02N; Long: 120-47.7E

TARGET DATA & DAMAGE INFLICTED
DESCRIPTION: One (1) large tanker and one escort, Chidori-
type. Contact by sight and radar.
Bright moonlight night.

SHIPS SUNK: None.

SHIPS DAMAGED: One (1) large tanker - 10,000 tons.

DAMAGED DETERMINED BY:
Heard one (1) hit and saw ship stop and begin
smoking heavily. Plotted ship less than 1000
yards from shore in vicinity of Matos Shoal
off Jolo Island.

TARGET DRAFT: 25 ft. COURSE: 030 T. SPEED 12 knots.
RANGE: 3070 yds (at firing).

OWN SHIP DATA
SPEED: 5 kts. COURSE: 100 T. DEPTH: 66 ft. ANGLE: zero
(at firing)

FIRE CONTROL AND TORPEDO DATA
TYPE ATTACK: Combination radar & periscope.
Fired at periscope depth after tracking
target with radar. Continuous periscope
bearing while firing.

-26-

— page 107 —
U.S.S. REDFIN(SS272)

(H) FIRING DATA #1

|                   | No.1    | No.2    | No.3    | No.4    | No.5    | No.6    | Tubes Fired       | -       | -       | -       | -       | -       | -       |
| Track angle       | 108 P   | 109 P   | 110 P   | 110 P   | 112 P   | 112 P   |
| Gyro angle        | 002     | 003     | 000     | 358     | 357     | 004     |
| Depth set         | 6 ft    | 6 ft    | 6 ft    | 6 ft    | 6 ft    | 6 ft    |
| Power             | High    | High    | High    | High    | High    | High    |
| Hit or Miss       | Miss    | Miss    | Miss    | Miss    | Miss    | Miss    |
| Erratic           | No      | No      | No      | No      | No      | No      |
| Mark Torped       | 23      | 23      | 23      | 23      | 23      | 23      |
| Serial No.        | 53149   | 53128   | 53144   | 53088   | 53240   | 53099   |
| Mark Explodor     | 6-5     | 6-5     | 6-5     | 6-5     | 6-5     | 6-5     |
| Serial No.        | 13719   | 17253   | 14229   | 6702    | 13039   | 7232    |
| Actuation set     | Contact | Contact | Contact | Contact | Contact | Cont.   |
| Actuation actual  | -       | -       | -       | Contact | -       | -       |
| Mark Warhead      | 16      | 16-1    | 16-1    | 16-1    | 16-1    | 16-1    |
| Serial No.        | 6128    | 1306    | 12844   | 12755   | 3956    | 12401   |
| Explosive         | TNT     | Torpex  | Torpex  | Torpex  | Torpex  | Torpex  |
| Firing interval   | 8 sec   | 8 sec   | 8 sec   | 8 sec   | 8 sec   | 8 sec   |

Type spread         Divergent
Sea conditions      Flat - calm.
Overhaul activity:- U.S.S. ORION.
REMARKS:- Used continuous periscope bearings while firing.

-27-

— page 108 —
U.S.S. REDFIN(SS272)
(H) ATTACK DATA #2
U.S.S. REDFIN(SS272)-TORPEDO ATTACK NO.2 - PATROL NO.3
TILT: 1524 DATE: June 21, 1944. LAT: 9-53.2N LONG:125-
14E.

TARGET DATA & DAMAGE INFLICTED

DESCRIPTION:
Two (2) medium transports - 7000 - 8000 tons.
Two (2) XAI escorts.
Contact made by periscope - visibility
excellent.

SHIPS SUNK:
None.

SHIPS DAMAGED:
None.

TARGET DRAFT: 10 ft. COURSE 114 T. SPEED. 7½ kts.
RANGE: 2200 yds(at firing)

OWN SHIP DATA

SPEED: 3 kts. COURSE 035 T. DEPTH 67 ft. ANGLE: 1 degree -
dive(at firing)

FIRE CONTROL AND TORPEDO DATA

TYPE ATTACK:-
Submerged periscope approach.
Continuous periscope bearing.
All torpedoes missed.
Believe target speed was actually less
than that used and that target saw torpedo
track and avoided.

-28-

— page 109 —
U.S.S. REDFIN (SS272)

(H) FIRING DATA #2

Tubes fired             No.1      No.2      No.3      No.4
Track angle             090 S     093 S     096 S     092 S
Gyro angle              349½      351½      354½      350½
Depth set               8 ft      6 ft      8 ft      6 ft
Power                   High      High      High      High
Hit or miss             Miss      Miss      Miss      Miss
Erratic                 No        No        No        No
Mark Torpedo            23        23        23        23
Serial No.              46153     53070     52971     53097
Mark exploder.          6-5       6-5       6-5       6-5
Serial No.              17266     14167     14177     14191
Actuation set           Contact   Contact   Contact   Contact
Actuation actual        -         -         -         -
Mark Warhead            16        16        16        16
Serial No.              6475      8997      9060      3033
Explosive               TNT       TNT       TNT       Torpex
Firing interval         8 sec     8 sec     8 sec     8 sec
Type spread             Divergent
Sea conditions          Calm
Overhaul activity-U.S.S. ORION.

REMARKS:- Believe we over estimated target's speed and
          that target saw torpedoes and avoided.

-29-

— page 110 —
(H) ATTACK DATA #3
U.S.S. REDFIN(SS272).
U.S.S. REDFIN(SS272) TORPEDO ATTACK NO.3 PATROL NO.3.
TIME: 0816 DATE: June 24, 1944. LAT:09-57N. LONG:125-07E
TARGET DATA & DAMAGE INFLICTED

DESCRIPTION:
Two (2) medium transports. The first was similar
to the Yokohama Maru, 6143 tons, and the second
was similar to the Anyo Maru, 9257 tons, page 68
ONI 208-J (Revised).
Two (2) escorts - XAM.

SHIPS SUNK:-
One (1) medium transport similar to Yokohama Maru,
6143 tons.

SHIPS DAMAGED:
None.

DAMAGED DETERMINED BY:-
Heard two (2) hits and later observed only one
remaining transport. Watched both escorts and
second target milling around at the scene of
attack apparently engaged in picking up survivors.
Later saw second target and both escorts depart
on a northerly course.

TARGET DRAFT: 10 ft. COURSE: 338 T. SPEED: 8 kts. RANGE:1400 yds
(at firing)

OWN SHIP DATA

SPEED: 3 kts. COURSE: 059 T. DEPTH: 66 ft. ANGLE:1 degree dive.
(at firing)

FIRE CONTROL AND TORPEDO DATA

TYPE ATTACK: Submerged periscope.
Continuous periscope bearings during firing.

-30-

— page 111 —
U.S.S. REDFIN(SS272)

(H) FIRING DATA #3

| | No.1 | No.2 | No.3 |
|---|---|---|---|
| Tubos fired | | | |
| Track angle | | 094 P | 096 P |
| Gyro angle | 100 | 007 | 005 |
| Depth set | 6 ft | 6 ft | 6 ft |
| Power | High | High | High |
| Hit or miss | Miss | Hit | Hit |
| Erratic | No | No | No |
| Mark Torpedo | 23 | 23 | 23 |
| Serial No. | 53179 | 41505 | 41595 |
| Mark Exploder | 6-5 | 6-5 | 6-5 |
| Serial No. | 13065 | 7819 | 11308 |
| Actuation set | Contact | Contact | Contact |
| Actuation Actual | - | Contact | Contact |
| Mark Warhead | 16-1 | 16-1 | 16-1 |
| Serial No. | 11834 | 12432 | 12916 |
| Explosive | Torpex | Torpex | Torpex |
| Firing interval | 8 sec | 8 sec | 8 sec |
| Typo spread | Divergent | | |
| Sea conditions | Calm | | |
| Overhaul activity | U.S.S. ORION. | | |

REMARKS:- The reason for a 100° gyro angle on first torpedo
          fired was not ascertained. The gyro regulator
          operated normally when checked just prior to
          firing. The circuits were checked afterwards
          and found to be satisfactory, however the observer
          in the forward torpedo room stated that No.1
          torpedo went out with 100° gyro angle. This
          would put it very close to the near escort.

-31-

— page 112 —
U.S.S. REDFIN(SS272)
(H) ATTACK DATA #4
U.S.S. REDFIN(SS272)-TORPEDO ATTACK NO.4 -PATROL NO.3
TIME: 1222 DATE: June 24, 1944. LAT:9-53.5N. LONG:125-06E.

TARGET DATA & DAMAGE INFLICTED

DESCRIPTION: One (1) transport similar to the Anyo Maru,
             9257 tons, page 68 ONI 208-J (Revised).
             Two (2) XAM escorts.

SHIPS SUNK: None.

SHIPS DAMAGED: One (1) transport - similar to Anyo Maru -
               9257 tons.

DAMAGED DETERMINED BY:-
             One (1) hit heard through the hull and over
             sound 66 seconds after firing first torpedo.

TARGET DRAFT: 10 ft. COURSE: 267 T.SPEED: 8 kts.RANGE:1200 yds.
                                            (at time of firing)

OWN SHIP DATA

SPEED: 3 kts. COURSE: 130 T DEPTH: 66 ft. ANGLE: Zero(at firing)

FIRE CONTROL AND TORPEDO DATA.

TYPE ATTACK: Submerged periscope.
             Continuous periscope bearings while firing.

-32-

— page 113 —
U.S.S. REDFIN(SS272)
(H) FIRING DATA #4

Tubes fired | No. 7 | N.8 | No.9 | No.10
Track angle | 133 P | 139 P | 138½ P | 138 P
Gyro angle | 184 | 178 | 177½ | 179
Depth set | 6 ft | 6 ft | 6 ft | 6 ft
Power | High | High | High | High
Hit or Miss | Miss | Miss | Hit | Miss
Erratic | No | No | No | No
Mark Torpedo | 23 | 23 | 23 | 23
Serial No. | 52920 | 52764 | 52930 | 53085
Mark Exploder | 6-5 | 6-5 | 6-5 | 6-5
Serial No. | 17256 | 4337 | 14862 | 6916
Actuation set | Contact | Contact | Contact | Contact
Actuation actual | - | - | Contact | -
Mark Warhead | 16 | 16-1 | 16-1 | 16-1
Serial No. | 3047 | 1052 | 12146 | 10492
Explosive | TNT | Torpex | Torpex | Torpex
Firing interval | 8 sec | 8 sec | 8 sec | 8 sec
Type spread | Divergent
Sea conditions | Calm
Overhaul activity - U.S.S. ORION.
REMARKS:- The target turned away to avoid.

-33-

— page 114 —
S3272/A16-3
Serial 033
CONFIDENTIAL

U.S.S. REDFIN(SS272)
Subject: U.S.S. REDFIN Report of War Patrol No. 3

(I) MINES

     No mine laying or mine sweeping operations were
     observed.

(J) ANTI-SUBMARINE MEASURES AND EVASION TACTICS

     No unexpected anti-submarine measures were encountered.
     No anti-submarine patrols were noted in Surigao Strait
     until after our first attack on 21 June. A contin-
     uous sea and air patrol was set after this attack.

     The Sulu Sea is fairly well patrolled by type Pete
     planes; however the Redfin's three contacts on 3
     July might have been caused by recent radio trans-
     missions in that area.

     Molukka Passage is well patrolled by air.

(K) MAJOR DEFECTS AND DAMAGE

     1-MC Bridge talkback system.
     During the whole patrol the bridge talkback failed
     miserably. All words to and from the bridge had to
     be passed through the hatch. This always creates
     confusion. Particular attention should be paid to the
     repair of the present equipment and to the develop-
     ment of a more adequate design.

     Stern plane casualty.
     The sprocket chains connecting the motor and the
     clutch, and the clutch drive are too slack. This
     condition allowed the chain to ride over the teeth
     of the sprocket and jam between the sprocket and
     housing of the clutch assembly. Several times power
     was lost on the stern planes. The condition was remed-
     ied to some extent by moving the clutch assembly by
     means of the centering screws, and by repeatedly
     greasing the chain.
     It is suggested that links be removed from the chains
     during the next refit, and also that adjustable idler
     sprockets be installed to allow slack to be removed.
     It is considered impractical to remove links from the
     chains while in combat areas.
     It is further suggested that a more positive power
     switch be installed in Bow and Stern plane circuits.

                                        -34-

— page 115 —
U.S.S. REDFIN(SS272)
SS272/-16-3
Serial 033
CONFIDENTIAL

Subject: U.S. S. Redfin Report of War Patrol No.3.

(L) RADIO

     Equipment operated satisfactorily and all serials
     were received. Japs jamming of the transmission
     frequency 8470 kcs was particularly concentrated
     in the vicinity of Tawi Tawi.

(M) RADAR - SD

     With the usual exception of low-flying planes, per-
     formance of the SD Radar was satisfactory.

     SJ- RADAR

     A great deal of trouble was again experienced with con-
     denser C(18) in the bias circuit of the transmitter-re-
     ceiver. A total of three such condensers were burned out;
     one in the exercise area and two in patrol. During the
     last week of patrol a jury-rig was used due to lack of
     spares. It is recommended that either the cause of
     this continual failure be eliminated or the allowance
     of spares be increased to 300%.

     Poor connection of the flexible cable to the moveable
     crystal assembly of the range unit gave us many head-
     aches. In twice repairing this connection we were forced
     to shorten the flexible cable so much that it was im-
     possible to run the range out beyond 3500 yards.

     There was a consistent false echo at 1200 yards. This
     was thought at first to be due to a gassy 715 tube.
     However a careful circuit check indicates that the
     trouble is coming from some other source.

(N) SOUND AND SOUND CONDITIONS

     Because of a sprung training gear pinion shaft, the
     QC-JK equipment was used only to a limited degree.
     This equipment was very noisy when trained fast, there-
     fore the QB was used for normal listening. Results
     were satisfactory. Particular mention is again made
     of the JP1 as a highly valuable piece of equipment,
     especially for slow moving targets and for close-in
     work. As A/S vessels came close aboard to the Redfin in
     their search and attacks, contact would be frequently
     lost on the QB- and QC-JK gear. However in every case
     the JP1 was able to maintain the contact with those
     A/S vessels.

                               -35-

— page 116 —
U. S. S. REDFIN(SS272)

SS272/A16-3
Serial 033
CONFIDENTIAL

Subject: U.S.S. Rodfin Report of War Patrol No.3,
(N) - Con't.

Sound conditions were generally good both at Sibutu and
Surigao. However at Surigao fish and other background
noises increased greatly in the late afternoon hours
and slightly interfered with sound gear listening.

(O) DENSITY LAYERS

Bathothermograph cards will be forwarded to the
Hydrographic Office.

(P) HEALTH, FOOD AND HABITABILITY

The food was well prepared and varied. Several hundred
pounds of fresh frozen vegetables added to the diet.
The meats carried were excellent which is a great improve-
ment over that carried on the last patrol.

Many of the crew suffered from colds contracted during
during leave and training period. These rapidly cleared
up as the submarine entered warmer climate.

The water on the previous patrol was unsatisfactory, causing
vomiting and nausea in numerous cases. This was attributed
to high copper content of water. Prior departure on this
patrol a Glauconite Filter was installed in scuttlebutt
in crew's mess. This did not appear to remove the impurity
in the water as the officers drank water direct from the
ship's line and none became sick. The water did prove
still caused a turnover of the stomach when drank in the
morning before eating but no sickness occurred. The cause
is still unknown. The used filters will be delivered to
the Squadron Medical Officer.

(Q) PERSONNEL

It is with pride that the Commanding Officer notes the ex-
cellent performance of duty of all the officers and crew.
All hands met every situation and emergency like seasoned
veterans. There is always present that spirit and desire
to bring the ship to grips with our enemy. The following
are particularly commended for their outstanding perfor-
mance of duty in action:
Lt-Cdr. C.K. MILLER, USN for his perfect organization of the
and coordination of the fire and ship control parties;
Lt. W.E. BABBITT, USNR as Diving Officer;
Lt(jg). F.R. MITCHELL, USN as Plotting Officer;
Lt(jg). G.L. REINHART, USNR as TDC Operator;
C'HARA, W.H., CTM(PA), USN as Chief-of-the-Boat;
HUGHES, John O., CMOM(PA), USN for his excellent care and up-
keep of the main engines;
HOEPER, R.E., RT1c, USN for his excellent care and operation of
the ship's radar equipment.

36-

— page 117 —
S272/A16-3
Serial 033
CONFIDENTIAL
U.S.S. REDFIN(SS272)
Subject: U.S.S. Redfin Report of War Patrol No.3.

— page 118 —
U.S.S. REDFIN(SS272)

SS272/A16/3
Serial 03
CONFIDENTIAL

Subject: U.S.S. REDFIN(SS272) Report of War Patrol
No.3.

(U) REMARKS - Con't.

Traffic between Surigao Strait and Cebu
passes close to Binit Point on Panaon Island and then
proceeds north of Limasawa Island.

The personal mail, fresh vegetable, etc.
received at Darwin were greatly appreciated by all hands.

-38-

— page 119 —
FC5-16/A16-3
Serial: 0406

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

FIRST ENDORSEMENT to
CO USS REDFIN Conf. ltr.
SS272/A16-3 Serial 033
dated 14 July 1944,
Report of 3rd War Patrol.

From:
To :
Via :

Subject:

SUBMARINE SQUADRON SIXTEEN (Ee)
U.S.S. RASHER, Flagship,
22 July 1944.

The Commander Submarine Squadron SIXTEEN.
The Commander-in-Chief, UNITED STATES FLEET.
The Commander Submarines, SEVENTH FLEET.
The Commander SEVENTH FLEET.

U.S.S. REDFIN (SS272) - Report of Third War Patrol -
Comment on.

1. The third war patrol of the U.S.S. REDFIN was conducted
in the SULU SEA during the period 26 May to 14 July 1944. The patrol
was of forty-nine days duration with thirty-five days being spent north
of the Barrier.

2. Four torpedo attacks were made resulting in serious damage
to the enemy. A special mission was successfully completed and valuable
information was obtained during reconnaissance.

ATTACK NO. 1 - Long range attack (3,000 yards) completed before
target entered restricted waters. Salvo of six torpedoes fired
with a spread of 300 yards between wing torpedoes. Believe the
fourth or fifth torpedo hit; all others passing ahead due to over-
estimate of speed.

ATTACK NO. 2 - Long range attack (3,200 yards) on a small AK
close inshore. Salvo of four torpedoes missed probably because
of error in speed estimation and target maneuvers.

ATTACK NO. 3 - Medium range attack (1,400 yards) on medium AP of
a convoy consisting of two AP's escorted by two CM's. Salvo of
three torpedoes of which two were heard to hit and the third had
an abnormal gyro angle set through error. Before an attack could
be made on second ship in convoy an escort close aboard forced the
REDFIN to take evasive action. Observation, taken one hour and
forty-five minutes after attack, showed one target and the two
escorts remaining.

ATTACK NO. 4 - Attack at 1,200 yards on an AP believed to be the
second ship of the convoy attacked in No. 3. The torpedoes
appeared to be running normally when REDFIN was forced to evasive
action by escorts. Two hours after firing, only one escort in
sight. Damaged ship and other escort probably made off.

- 1 -

— page 120 —
F05-16/A16-3
Serial: 0406
C-O-N-F-I-D-E-N-T-I-A-L

SUBMARINE SQUADRON SIXTEEN

(Es)
U.S.S. RASHER, Flagship,
22 July 1944.

Subject: U.S.S. REDFIN (SS272) - Report of Third War Patrol -
Comment on.

3. The trouble experienced in the SJA Radar was due to
failure of condenser (C-18) and the moving crystal in the Range Unit.
This weakness is inherent in this equipment. The parts themselves
are critical items in this area. The false echo at 1,200 yards is
being investigated.

4. A new type SD head was installed during last refit and
appears to have improved the overall performance of the SD. Overhaul
will be completed during the normal refit.

5. The Squadron Commander congratulates the Commanding
Officer, Officers and crew on the conduct of this patrol in which
serious damage was inflicted on the enemy.

[SIGNATURE: H. H. MCLEAN.]
H. H. MCLEAN.

— page 121 —
FE24-71/A16-3
Serial: 0758
C-O-N-F-I-D-E-N-T-I-A-L

SECOND ENDORSEMENT to:
USS REDFIN Comdt.
A16-3 Serial 035 dated.
14 July, 1944. Report
of Third War Patrol.

From:
To :
Via :
Subject:

1.
ducted in the SULU SEA. The assigned area was thoroughly covered.

2.
REDFIN was disappointed in not being able to drive
home a torpedo attack on a large Task Force, which sorted from
the enemy fleet anchorage at TAWI TAWI, but did transmit the
vitally important contact report.

3.
A Special Mission was well executed as a result of
intelligent planning, careful rehearsal, and hard work by all
hands.

4.
This patrol is designated "successful" for the pur-
pose of the award of the Submarine Combat Insignia.

5.
The Force Commander congratulates the Commanding
Officer, Officers and Crew, of the U.S.S. REDFIN on this patrol
in which important services were rendered and the following heavy
damage inflicted on the enemy:

SUNK
1 - AO (Large - EU) - - - - - - - 10,000 Tons (Attack No. 1)
1 - AP (YOKOHAMA MARU Class - EC) 6,100 Tons (Attack No. 3)
Total - 16,100 Tons.

DAMAGED
1 - AP (ANYO MARU Class - EC) - - - 9,300 Tons (Attack No. 4)
Grand Total - 25,400 Tons.

[HANDWRITTEN: P. F. STRAUB, Jr.,]
Flag Secretary.

DISTRIBUTION:
Cominch (3) - Direct CTF-71 (4)
Vice Opnav (2) - Direct CTF-72 (2)
Vice Opnav Op-23c (1) CSS- (1)
Com1stFlt (1) CSS-16 (1)
Com2ndFlt (1) DivComRons-12 (1)
Com3rdFlt (1) DivComRons-16 (1)
Com7thFlt (2) S/M School N.L.Conn. (2)
Comsubs1stFlt (4) *Each S/M "A". (1)
Comsubs2ndFlt (4) *NOT TO BE TAKEN TO SEA - BURNUNITED STATES NAVY
12/ms [HANDWRITTEN: SOG]
30 July 1944.

[HANDWRITTEN: SW]

The Commander Submarines, SEVENTH FLEET.
The Commander-in-Chief, UNITED STATES FLEET.
The Commander, SEVENTH FLEET.
U.S.S. REDFIN (SS272) - Report of Third War Patrol.-
Comment on.

The Third War Patrol of the U.S. REDFIN was con-

R. W. CHRISTIE.

— page 122 —
[HANDWRITTEN: 2nd Copy]

U.S.S. L.D.II (SS272)
c/o Fleet Post Office
San Francisco, Calif.

35272/:16
DECLASSIFIED

4 October 1944.

From: The Commanding Officer, U.S.S. L.D.II.
To : The Commander-in-Chief, United States Fleet.
Via : (Official Channels).

Subject: U.S.S. L.D.II (SS272), Report of War Patrol
Number 4.

Enclosure: (A) Subject Report.

1. Enclosure (A), covering the Fourth War
Patrol of this vessel conducted in SOUTH CHINA SEA,
South of Lat:9°-N and East of Lon: 112°-E, during
the period 6 August to 5 September and in an area
around the South and East coasts of Celebes Island
during the period 5 September to 4 October, is for-
warded herewith.

[SIGNATURE: M.H. Austin]
[UNCLEAR: M.H. AUSTIN]

DECLASSIFIED ART. 0445, OPNAVINST 5510.1C
[HANDWRITTEN: BY OP-09B9C DATE 6/1/72]
[STAMP: DECLASSIFIED]

[HANDWRITTEN: FILMED]
[HANDWRITTEN: 91850]

— page 124 —
SS272/A16
CONFIDENTIAL

U.S.S. REDFIN(SS272)

Subject: Report of War Patrol U.S.S. REDFIN NO.4.

7 August 1944(2nd day)

Enroute Exmouth Gulf conducting training exercises with
U.S.S. JACK.
0015 Passed southbound U.S.S. FLASHER.
       Ship Contact No.1.
       Noon Position: Lat: 29-01.4 S.; Long: 113-00 E.

8 August 1944(3rd day)

Enroute Exmouth Gulf conducting training exercises with
U.S.S. JACK.
1501 Passed southbound U.S.S. LAFON.
       Ship Contact No.2.
       Noon Position: Lat: 24-54 S.; Long: 112-29.5 E.

9 August 1944(4th day)

Enroute Exmouth Gulf in company with U.S.S. JACK.
0700 Entered Exmouth Gulf.
1007 Moored port side to U.S.S. JACK at Fuel Barge at
       Exmouth Gulf and commenced fueling ship.
       Completed fueling having received 11,000 gallons of
       diesel fuel.
2008 Underway for training exercises in the use of special
       equipment.
       Noon Position: Exmouth Gulf.

10 August 1944(5th day)

Underway in Exmouth Gulf.
0024 Anchored 2000 yards from Fuel Barge.
0700 Underway engaged in training exercises.
1056 Held gunnery drill on wreck on Northwest Capo.
1224 Completed exercises and departed Exmouth Gulf for
       War Patrol.
1819 Joined company with U.S.S. JACK and each ship made
       one night practice approach.
2100 Departed company with U.S.S. JACK.
       Noon Position: Exmouth Gulf.

11 August 1944(6th day)

Enroute Lombok Strait - during day hold various
diving and fire control drills.
Noon Position: Lat: 17-34 S.; Long: 113-50.5 E.

-2-

— page 126 —
SS272/A16
CONFIDENTIAL
Subject: Report of U.S.S. REDFIN War Patrol No.4.
U.S.S. REDFIN (SS272)
15 August 1944 (10th day)

0207 Radar contact at 11,000 yards.
    Ship Contact No.5.
    Tracked on course 050 with a constant helm zig plan
    at 14 knots. Went in for an attack at range 4000 yds.
    Target appeared very small. Broke off attack because
    I did not think I would be able to hit so small a
    target.
0514 Noted Radar interference bearing 300 T. It appeared
    to be from another SJ Radar. Attempted and failed to
    obtain recognition. Our first challenge was for the
    following day but later the mistake was corrected.
    This might have aroused his suspicion. Probably
    U.S.S. ANGLER.
    Ship Contact No.6.
0550 Suddenly lost radar interference. Change course to
    avoid just in case he wasn't sure we were friends.
0600 Submerged and headed up for Discovery East Bank Light.
1850 Surfaced.
    Noon Position: Lat: 5-10 S.; Long: 112-18 E.

16 August 1944 (11th day)

0637 Submerged.
1035 Sighted Discovery East Bank Light.
1042 Changed course to 000 to pass east of light by about
    11 miles. Noted strong northwesterly set. Actually
    cleared the light by about 5 miles.
1905 Surfaced.
    Noon Position: Lat: 3-36 S.; Long: 109-12.5 E.

17 August 1944 (12th day)

0136 Passed 12 miles south of Sorutu Island.
0728 Submerged.
1810 Surfaced.
1816 Sighted large sailboat - avoided.
2039 Passed 14 miles west of Datu Island.
    Noon Position: Lat: 00-29.5 S.; Long: 108-11 E.

18 August 1944 (13th day)

0340 Sighted St Pierre Island and light, single white flash
    every 5 seconds. Radar range was 32000 yds. At time of
    sighting it is quite possible that Marundung Island light
    was also lighted for both a lookout and the Officer of
    the Deck thought they saw a light in that direction.
0810 Submerged.
1927 Surfaced and headed eastward to pass 12 miles north of
    Soubi Island of the South Natuna Group.

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U.S.S. REDFIN (SS272.
SS272/.16
CONFIDENTIAL

18 August 1944 (con't)

2000 Sighted Soubi Island light group flashing two every
     11 seconds. This agrees very closely with that des-
     cribed in the Light List. Strength of light greatly
     reduced.
2023 Headed down towards Datu Point.
     Noon Position: Lat: 3-02 N.; Long: 108-37 E.

19 August 1944 (14th day)

0635 Submerged about 25 miles from Datu Point and headed
     down for Datu Point.
1243 Picked up pinging from in the direction of Datu Point.
     Later saw three columns of smoke but never made
     sight contact with ships. These ships passed
     close to Datu Point and headed down the coast to-
     wards the Sarawak River entrance.
     Ship Contact No.7.
1254 Sighted type "Lily" aircraft over apparent position
     of convoy.
     Aircraft Contact No.1.
1405 Lost sound contact with convoy.
1940 Surfaced.
2028 Executed Special Mission - See Special Report.
2116 Headed for Cape Sirik. I hoped to make contact with
     convoy which I heard this afternoon. Expect them
     to be off Cape Sirik between 1500-1600 on 20 August.
     Noon Postion: Lat: 2-22.5 N.; Long: 109-45 E.

20 August 1944 (15th day)

0613 Sighted Cape Sirik - range 13 miles - bearing 146 T.
     Commenced surface patrol. Keying SD Radar 10 seconds
     out of each minute.
1149 SD contact on an aircraft at range 15 miles. The pip
     was very strong indicating a large plane.
     Aircraft Contact No.2.
     Submerged. If this is a convoy it has to pass close
     to this position.
1525 Sighted smoke bearing 078 T.
     Ship Contact No.8 (EU)
     This later turned out to be a convoy of at least
     2 DD or SC's; 1 small tanker; 1 medium freighter
     3 large transports about 8000-10000; 2 large freighters
     and 1 large tanker. Course 270, speed 9 knots. The
     Escorts were pinging continuously. The transports
     and two of the freighters were crowded with troops.
     There was no air cover.

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SS272/A16
CONFIDENTIAL

U.S.S. REDFIN(SS272)

20 August 1944(con't)

Below is a sketch of the formation:-

(1) AK-Mod. (3) AK Largo (4) AP (5) AK DD
                     tanker. MKFKM
DD (2) AD-Small
                     MMF
(6) AP (8) AO
                     MFK
(7) AP
                     MFF

None of these ships had a conventional type radar antenna
although ship No.4 had a single pipe-like crosstree at the
top of the stub foremast. It was of a peculiar appearance
and could have been used for signal halliards.

1535 Sighted smoke of a second group of ships bearing 157 T.
The smoke indicated there were at least three ships in
this group. Those ships were never sighted. No ping-
ing was heard from the direction of this group. The
bearing changes indicated that these ships would pass
well to the westward. It is quite possible that this
was the same ships heard yesterday when they passed
Datu Point. There was no air cover sighted.
Ship Contact No.9.
Since the soundings in this vicinity were from 10 to
20 fathoms and I was quite sure I could maintain sight
contact, I decided not to attack until after dark and
then on the surface.
1738 Main body of first group (Contact No.8) passed overhead.
1921 Surfaced with the masts still in sight. Commenced end-
around run. Made radar contact on main body at 2300 yds.
and on Escorts at 12000 yards.

The night was clear, no moon, and only a few clouds
around the horizon. The convoy ran on base course 270 T
until about 2000 at which time they began to gradually
change course towards the south. This late change of
course to the south gave me the impression that they
intended to run directly across to Api Passage instead
of going in close to the shore line. This made the dis-
tance to be covered by the Redfin much greater as I
wanted to attack from the seaward side. At 2230 I was
in position to attack but found it difficult to get in
because of the extreme maneuvers of the starboard escort.
He was continuously changing position between the bow and
quarter of the convoy. In this shallow water I considered
it better to make a surface approach so decided to go in
firing three torpedoes at the leading starboard target
and after the turn fire the stern tubes at the trailing
ship in the starboard column.
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— page 129 —
U.S.S. REDFIN (SS272)

SS272/A16
CONFIDENTIAL

20 August 1944 (con't)

2234 Started in for attack.
    Convoy's base course 180 - now heading towards Sarawak
    River at range of about 4000 yards the escort speeded up
    and zigged right presenting a small angle on the bow;
    however, he gave no definite indications of having con-
    tacted the Redfin. At torpedo run of 2700 yards fired four
    torpedoes at escort and turned away because the range to
    the convoy was much too great to fire. All torpedoes
    were seen to miss astern. The escort did not turn towards
    so I fired two more at him - those also missed. These
    torpedoes were electrics and were not seen. At range
    8000 yards paralleled convoy course and reloaded. I de-
    cided that the escort was maneuvering too much for me to
    waste further torpedoes on.

2311 Started in for second attack, from the starboard quarter
    on the column of three transports. This was an attack
    from the rear center. At range of about 5000 yards on
    the target and 7000 yards on the starboard escort, the
    convoy turned towards and started closing the range very
    fast.

At 2339 when the range had closed to 3600 yards I turned
    away at flank speed. The range closed to 3100 yards before
    it steadied down. He opened fire with one gun just as the
    range steadied down. All shots passed directly over Redfin
    and because I was presenting a 160 starboard angle on the
    bow they will fall close in on the port bow. I did not put him
    directly astern because I thought that was what he expected
    me to do and that I would be more likely to walk right in-
    to his fire. Blow safety tank almost dry and was very glad
    to see the pitlog register 20.5 knots. The range then be-
    gan to open slowly. The target did not present a zero
    angle on the bow but once and when he did the range closed
    rapidly. I thought he might be attempting to try a deep
    chase so I fired one down the throat. This missed but it
    might have worried him for he very quickly broke off the
    chase. At 2348 he fired his 8th and last shot. The range
    at this time was 3800 yards.
    Noon Position: Lat: 2-58 N.; Long: 111-14 E.

21 August 1944 (16th day)

0009 Commenced tracking convoy to determine destination.
0041 Tracked convoy into shallow water. It appeared to be
    headed for the vicinity of Cruiser Rock off Sarawak River.
    I think they would then turn west toward Api Passago.
    Reversed course to clear area and head up towards Balabac
    Island.

0307 Transmitted contact report.
0650 Submerged about 30 miles northwest of Capo Sirik.
1213 Surfaced.

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S.S. REDFIN (SS272)

SS272/A16
CONFIDENTIAL

21 August 1944(con't)

1419 Sighted periscope - bearing 160 relative. At the time
of the contact own speed was 14 knots and we were carry-
ing out a constant helm zig plan, 30 degrees each side
of the base course using 5 degrees rudder. Cleared area
at maximum speed. Both the Junior Officer of the Deck
and the stern lookout made independent sight contact
of the periscope and its wake. They both agreed as to
its course.
Ship Contact No.10-A.

1435 Aircraft contact on SD Radar at 19 miles. We were still
evading the submarine so submerged to avoid further
complications.
Aircraft Contact No.3.

1816 Surfaced and headed northeast to patrol off Miri.
Noon Position: Lat: 3-37.4 N.; Long: 111-22 E.

22 August 1944(17th day)

0316 Arrived off Miri and commenced surface patrol.
0650 Submerged and started in towards Miri.
1413 Changed course to North to clear area. I did not know
my position very well and was afraid of the mine fields.
1715 Surfaced. Set course for Balabac Island.
Noon Position: Lat: 4-35 N.; Long: 116-34 E.

23 August 1944(18th day)

Enroute Balabac Island.
1041 Sighted Balabac Island.
1230 Submerged 15 miles west of Balabac Island.
1840 Surfaced and set course up Palawan Passage to patrol
focal point of traffic passing close aboard Balabac
Island through Palawan Passage.
2227 Arrived on station and commenced patrolling on an East
and West line.
Noon Position: Lat: 7-46 N.; Long: 116-34 E.

24 August 1944(19th day)

0750 Submerged.
0927 Surfaced because of low visibility.
1130 Submerged because extremely heavy rain storm had complete-
ly blocked out SJ Radar.
1557 Surfaced and continued patrol.
2100 Received instructions to proceed to patrol in the Sulu
Sea. Set course up Palawan Passage.
Noon Position: Lat: 8-22.8 N.; Long: 116-52 E.

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— page 131 —
SS272/.16
CONFIDENTIAL

U.S.S. REDFIN(SS272)

25 August 1944(20th day)

Surface patrol in Palawan Passage.
1915 Entered Apo West Pass.
Noon Position: Lat: 11-32 N.; Long: 118-41.8 E.

26 August 1944(21st day)

0317 Cleared Apo West Pass, no contacts. Set course for
Cuyo West Pass.
0604 Submerged at southern end of Cuyo West Pass.
1503 Surfaced in rain storm to obtain position on
Calandagan Island.
1516 Submerged and set course for Tagalinog Island off
1840 the coast of Palawan Island. This appeared to be
a good patrol station for traffic heading for Balabac
from Cuyo West Pass.
Noon Position: Lat: 10-34.9 N.; Long: 120-29.2 E

27 August 1944(22nd day)

0610 Submerged about 20 miles west of Tagalinog Island.
1240 Sighted Tagalinog Island.
1840 Received instructions to patrol the central part of
the Sulu Sea. Headed east to patrol focal points
south and east of Tubbataha Reefs.
Noon Position: Lat: 8-53.2 N.; Long: 118-25 E.

28 August 1944(23rd day)

0600 Arrived on station and commenced patrolling.
0939 Aircraft contact on SD Radar - range 4 miles.
Submerged. Plane not sighted.
Aircraft Contact No.4.
1118 Surfaced and continued patrol.
2330 Received instructions to conduct Special Mission.
Noon Position: Lat: 8-24 N.; Long: 120-17 E.

29 August 1944(24th day)

Patrolling south and east of Tubbataha Reefs.
0830 Submerged to avoid being sighted in this vicinity.
Now about 15 miles - 230 T. from Tubbataha Reef light.
1840 Surfaced and set course to execute Special Mission:
See Special Report.
Noon Position: Lat: 8-31 N.; Long: 119-44 E.

30 August 1944(25th day)

Special Mission.
Received instructions to return Darwin via
MOLUKKA PASSAGE.

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— page 132 —
SS272/A16
CONFIDENTIAL

U.S. REDFIN (SS272)

31 August 1944 (26th day)

0100 Completed Special Mission - commenced patrolling.
0218 Had radar contact on small anchored ship. Scantruck
     typo, estimate 200 tons. Commenced approach for gun
     action.
0241 Commenced firing/ 10-B.
0255 Ceased firing, having fired 27 rounds 4" and 60 rounds
     20mm ammunition. Shortly before the firing was stopped
     the target got underway and proceeded in close towards
     the shore at 7 knots. Not more than two or three hits
     were obtained because of the darkness, the moon had
     just set. Very little if any damage is claimed.
0600 Submerged, enroute Sibutu Passage.
1053 Surfaced proceeding at 17 knots.
1105 Aircraft contact on SD Radar - range 17 miles.
     Sighted plane on southerly course.
     Submerged.
     Plane closed range but did not appear to be headed
     directly for Redfin.
     Aircraft Contact No.5.
2238 Passed 12 miles west of Pearl Bank.
     Noon Position: Lat: 8-20 N.; Long: 118-50 E.

1 September 1944 (27th day)

0016 Commenced passage of Sibutu Strait.
0204 Cleared Sibutu Strait only contact a small sailboat
     at southern entrance. No light, or other activity
     was noted in vicinity. Headed southeast enroute
     Bangka Strait.
0834 Aircraft contact on SD Radar - range 12 miles - closing
     rapidly. Plane not sighted.
     Submerged.
     Aircraft Contact No.6.
0915 Surfaced.
1212 Aircraft contact on SD Radar - range 28 miles.
     Plane not sighted. The range opened slightly and
     then contact was lost. Because of a rainstorm which
     set in very soon after the contact was made I doubt
     if this plane saw the Redfin.
     Aircraft Contact No.7.
1450 Noted interference on both SD and SJ Radars, presumed
     this to be a U.S. Submarine in this vicinity:
     Position: Lat: 3-17 N.; Long: 122-48 E.
2307 Commenced passage of Bangka Strait.
     Noon Position: Lat: 3-32.5N.; Long: 122-06 E.

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[STAMP: CONFIDENTIAL]
U.S.S. REDFIN (SS272)

SS272/A16
CONFIDENTIAL

2 September 1944 (28th day)

0015 Cleared Bangka Strait - no contacts. Headed south
     through Molukka Passage.
0133 Made SJ Radar contact at 10000 yards - bearing 160 T.
     range closing fairly fast. The pip was large enough
     to have been a destroyer. Turned away. No track.
0134 Turned towards to track and attack - range closing
     rapidly. Stopped.
0138 Sighted very large flying boat - range 6500 yards -
     bearing 160 T. Plane appeared to be reversing course.
     Picked out to 17000 yards range although I could
     not definitely identify the plane it had the appear-
     ance of either a Mariner or a Coronado. It did not
     attempt to presume it to be a friendly aircraft.
     Aircraft Contact No.8.
0345 Set keying watch on SD Radar.
0347 Aircraft contact on SD Radar - range 8 miles -
     SJ then made contact at 18000 yards bearing 050 T.
     Aircraft Contact No.9.
0936 Plane worked south to bearing 090 T and then headed
     directly east. Contact was lost on SJ Radar at 22000
     yards. Plane not sighted.
1017 Aircraft contact on SD Radar - 8 miles - closing
     rapidly.
     Submerged.
     Aircraft Contact No.10.
1404 Surfaced.
1406 Sighted small patrol boat - bearing 175 T. range
     about 7 miles. It appeared to have a zero angle
     on the bow.
1408 Ship Contact No.11.
     Headed for patrol boat and submerged.
     Picked up pinging bearing 175 T. Came up to
     50 feet but still unable to see ship. He apparently
     reversed course just as Redfin submerged as the
     pinging was soon lost and was never picked up again.
1800 Surfaced and entered Ceram Sea. Set course to pass
     west of Buru Island.
2215 Transmitted TA Darwin.
     Noon Position: Lat: 00-57.5 S.; Long: 126-19 E.

3 September 1944 (29th day)

0126 Passed about 20 miles west of Buru Island and set
     course south for Wetar Island.
1201 Sighted aircraft - bearing 320 T. Later SD range put
     the range at about 12 miles. Course about 160 T. The
     plane appeared to be either a B-24 or B-25. He did
     not approach Redfin so stayed on surface.
     Aircraft Contact No.11.

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— page 134 —
U.S.S. REDFIN (SS272)

SS272/A16
CONFIDENTIAL

3 September 1944(con't)

1800 Noted occasional radar interference on SD Radar.
     Position: Lat.7-10.S, Long: 126-10 E. The interference
     seemed to come from about 290 T. This could have been
     the Mingo. This interference only lasted about 30
     minutes.
2145 Commenced passage through Barrier east of Wetar and
     Timor Islands.
2345 Cleared Strait east of Timor. No contacts. Set
     course for Darwin.
     Noon Position: Lat: 05-12. S. Long: 125-37.3 E.

4 September 1944(30th day)

0625 Aircraft contact on SD Radar - range 12 miles.
     Aircraft Contact No.12.
0626 Submerged. Range on plane had closed to 8 miles.
     Plane not sighted.
0750 Surfaced.
0914 Aircraft contact on SD Radar - range 15 miles - closing
     rapidly. Plane not sighted.
     Aircraft Contact No.13.
     Submerged.
1000 Surfaced.
1047 Sighted two B-25 aircrafts on northwesterly course,
     later SD Radar range put them at 36 miles.
     Aircraft Contact No.14.
     Noon Position: Lat: 10-36 S; Long: 127-42 E.

5 September 1944(31st day)

     Between the hours of 0130 and 0330 about 15 or 20
     aircrafts passed overhead in a southerly direction.
     We were at this time within 20 miles of the rendezvous
     point at Darwin, therefore I did not dive. Two of
     these aircrafts seemed to be a bit nosey so I challenged
     them on the light and received the proper reply.
0402 Exchanged recognition signals with H.M.A.S. L 814.
     Stopped at buoy No.5 to wait for Nautilus.
0448 Exchanged recognition signals with U.S.S. Nautilus
     and proceeded into harbor.
0740 Moored at Main Jetty at Darwin, Australia commenced
     fueling and loading torpedoes. Repair forces from
     U.S.S. Coucal commenced effecting minor repairs.
1500 Completed fueling and loading torpedoes, having de-
     livered 2 Mk 18 to the dock and received 10 Mk 23 and
     2 Mk 14-3A.
1800 Orders and mail arrived from Forth. Decided to de-
     part evening of 6th.
     Noon Position: Darwin.

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— page 135 —
U.S.S. REDFIN(SS272.

SS272/A16-3
CONFIDENTIAL

6 September 1944(32nd day)

Spent the day completing stores. Had a morning
and an afternoon softball game. Beer was furnished
by the U.S.S. Coucal. This relaxation proved most
beneficial for all hands. In the early evening
Lt-Cdr. D.H. Byerly, USN, held a steak fry at the
new submarine officer's quarters for the officers
of the Redfin and Nautilus.
2100 Departed Darwin to patrol area around the south and
east coasts of Celebes Island. Special attention
was to be given Salcior Strait, south of Salcior
Island, Pomalaa, eastern and western approaches to
Tioro Strait, Boeton Passage, Konari and Greyhound
Strait, on 27 September start return Fremantle, via
Ombai Strait.
Special mention is made here of the excellent services
provided at Darwin by Lt-Cdr. D.H. Byerly, USN, with
the limited facilities at his disposal. He was
most cooperative in providing recreation for all
hands. This was very much appreciated.
Noon Position: Darwin.

7 September 1944(33rd day)

0018 Noted interference on SJ Radar. It seemed to be
caused by another SJ Radar.
0025 Exchanged recognition signals with U.S.S. Stingray.
0135 Set course for strait east of Timor Island.
0620 Made trim dive.
0705 Surfaced.
1525 Aircraft contact on SD Radar at 22 miles. This
contact closed to 20.5 miles and then was lost
at 23 miles.
Aircraft Contact No.15.
2100 Entered Strait east of Timor.
2249 SJ Radar went out of commission.
2317 Cleared strait - no contacts. Set course for
Salcior Strait.
Noon Position: Lat: 11-26 S.; Long: 126-56 E.

8 September 1944(34th day)

0520 Made trim dive.
0531 Surfaced.
1117 SJ Radar back in commission.
1410 Sighted two small two-masted native sailboats,
decided to board and search.
1445 Fired a burst of 20mm fwd. of 1st boat and he
immediately dropped his sails.

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SS272/A16
CONFIDENTIAL

                                                                .S.S. REDFIN(SS272)

                                                        8 September 1944(con't)

1514 Native in dugout canoe came alongside. He gave us very
     little information so brought sailboat alongside and
     searched. The crew consisted of six men. Their cargo
     consisted of about 10 tons of rice, dried sweet potatoes, broad
     beans, and coconuts. I searched carefully and confiscated all
     papers I could find. I gave them some cigarettes, bread
     and other food in exchange for some bananas and coconuts.
     They told me that they came from Flores Island and were
     headed for Boston Island. I doubt very much if they
     came from Flores Island. Position: Lat: 6-46 S.; Long:
     123-53 E.
1540 Cleared 1st boat and headed towards 2nd.
1610 Brought 2nd sailboat alongside and searched. It carried
     a similar cargo as the other boat. There were four men
     two boys and one old woman aboard. I made a similar ex-
     change of articles as before. I tried unsuccessfully to
     get these people to show me on a chart where they were
     going. I also tried to get any information about
     the Japs but had no luck. I did not bring any volunt-
     eers because I did not want them on board for so long a
     time. The papers taken from both boats will be delivered
     to the Force Commander upon return to Fremantle.
1648 Cleared boat and continued course.
     Noon Position: Lat: 06-50 S.; Long: 124-35 E.

                                                        9 September 1944(35th day)

0400 Arrived off Salcier Strait.
0554 Submerged for patrol about 5 miles east of Sarontang
     Island, which is the center of Salcier Strait. There
     are great many sailboats in this vicinity.
1820 Surfaced and commenced a patrol covering eastern approaches
     to Salcier Strait. During day saw a great number of sail-
     boats.
     Noon Position: Lat: 5-37 S.; Long: 120-36 E.

                                                        10 September 1944(36th day)

0550 Submerged and commenced patrol of that part of Salcier
     Strait which lies between Sarontang Island and Tg Lassa
     (the southern tip of Celebes Island). Keeping 5 miles
     east of a line between these two points.
1011 Sighted single small ship bearing 291 T. distance about
     15000 yards. It appeared to be approaching from the
     west. Went to normal approach course.
1030 Sighted two more ships, making total of three. One
     small MFM freighter and two small unidentified escorts.
     Instead of being on an easterly course these ships had
     approached from the north very close along the shore
     line and by the time contact was made they were turning

                                                          -14-

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U.S.S. REDFIN (SS27)
SS272/A16
CONFIDENTIAL

10 September 1944 (con't)

west into Saloier Strait very close to the Celebes
Coast and were already in shallow water. These ships
got by because I had presumed that they would cross
Boni Gulf on a direct line between Saloier Strait and
Tioro Strait. However, this proves that groups go to
the northward and approach Saloier close along the
Celebes coast.
Ship Contact No.12.
1035 Headed north to be able to intercept traffic before
it reached Tg Lassa.
1601 Sighted small power boat. This boat was about 60 ft.
long with a chariot type bridge and a canopy over the
stern. It appeared to be capable of high speeds but
I could not make out any torpedo dropping gear which
would class it as a MTB. There was an unidentified
object at the stern which might have been 2 to 4 depth
charges. This boat went south along the coast at
about 10 knots.
Ship Contact No.13.
1834 Surfaced and commenced surface patrol in this vicinity.
During the day saw a great many sailboats.
Noon Position: Lat: 5-32.5 S.;Long: 120-33.5 E.

11 September 1944 (37th day)

0537 Submerged 8 miles east of Tiro Bay on Celebes Island
and headed in to patrol a line parallel to the coast
about 3 miles off.
1834 Surfaced and commenced surface patrol in this vicinity.
During the day saw a great many sailboats.
Noon Position: Lat: 5-33.5 S.;Long: 120-34.5 E.

12 September 1944 (38th day)

0552 Submerged about 8 miles east of Tiro Bay on Celebes
Island and headed in to patrol along coast.
0718 Sighted smoke of ship rounding Tg Lassa. Commenced
closing coast at full speed. I was at this time about
6-7 miles off the coast and these ships travel very
close to the coast.
Ship Contact No.14.
0747 Sighted small MYK Freighter about 2000 tons on souther-
ly course. Range estimated at 8000 yards. Because he
blended in with the land background so well he was
extremely hard to see.
0758 Sighted Net Tender type escort. This vessel was very
small and had the lines of an AM, however, two "I"
beams protruded over the bow and were fitted with sheaves
which gave it the appearance of a Net Tender.

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— page 138 —
S3272/A16
CONFIDENTIAL

.S.S. RLDFFIN (SS272)

12 September 1944 (con't)

0820 Target passed at closest range of 4000 yards. He
     must have been not more than 500 yards off the beach.
0823 Sighted second escort which appeared to be an MTB
     and appeared to carry depth charges. The colors at
     the gaff on this boat appeared to be that of the Dutch.
     Several observations were made trying to accurately
     determine if this boat was actually showing Dutch colors
     and none other than Dutch could be made out on the MTB
     while those on the freighter and the not tanker were
     clearly Japanese.
     Continued in to patrol 3 miles off coast of Tiro Bay.
1310 Heard pinging t 180 T.
1315 Sighted smoke of northbound ship just clearing Saleior
     Strait, and heading north. Started closing the beach.
     I know he would run close in and zig very little.
1335 Sighted two ships. One engines aft, tanker about
     5000 tons and one PC Type Escort on starboard boom of
     tanker. These ships are approaching on a northerly
     course and are very close to the shore line. The
     tanker was MKMT-Type with the bridge just aft of the
     kingpost. The Escort was not definitely identified,
     it was small, probably a PC 13 type.
1417 Escort passed not more than 500 yards ahead pinging
     constantly but failed to pick up Rudfin. His pings
     were reverberating so many times off the sharp coast
     line that I doubt he could have distinguished a true
     contact.
1422 Attempted to get a ping range on target, so many echoes
     came back that the range scale was lighted almost
     solidly from 500 yards to 3000 yards. Got a 2500 yds.
     periscope range.
1423 Fired four torpedoes at 8 second firing interval with
     a constant periscope bearing.
1424 Noted escort which was close turn towards. Not deep.
1424 Heard one torpedo hit. The other three probably ex-
55  pending themselves in Tiro Bay, however no other tor-
     pedo explosions were heard.
1429 1st depth charge - not close.
1436 10 depth charges at the rate of one every 2 seconds -
     none close. I have never heard a Jap drop charges
     so fast before. He either had a good contact on a
     coral head or the firing catch on his depth charge
     racks stuck in the fire position.
     My evasive action consisting of paralleling the coast
     for about 1½ miles and then heading out on 090 T.
1446 Fast light screws (240 rpm) passed between Rudfin and
     escort. These were in addition to the original escort
     which was still pinging from northerly bearing in the
     vicinity of the attack. These light screws must have
     come from a very small escort which had been inboard
     of the target. I can not account for them otherwise
     unless it was a Coastal Patrol which happened to be
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U.S.S. REDFIN (SS272)

SS272/A16
CONFIDENTIAL
12 September 1944 (con't)

1509 passing at this time.
     Camo up to periscope depth and could only see PC Escort,
     bearing 340 T. which put him still in the close vicinity
     of the attack. There was no sign of the target. If
     he did not sink he certainly cleared the area in a hurry
     leaving his escort.
1838 Surfaced and headed away from coast. We could still
     hear the pinger off Tiro Bay.
1907 Noted large fire in vicinity of Tiro Bay. I thought
     this might be our tanker burning, so headed directly
     for it on 295 T.
1943 Noted a fairly strong white light bearing 270 T. range
     close. Stopped. Made radar contact at 7200 yards also
     heard pinger from this same bearing. Someone on the
     escort forgot to turn out a light before he opened a
     door. Unable to pick up any other contact and since
     it appeared the escort intended to patrol the only good
     spot for an attack on this coast I headed east to patrol
     the western entrance to Tioro Strait.
     Noon Position: Lat: 5-25.5 S. Long: 120-30.2 E.

13 September 1944 (39th day)

0200 Arrived on station at western entrance to Tioro Strait.
0538 Submerged and headed up toward Celebos coast staying
     outside of 100 fathom curve.
1132 Took careful look into Pising Bay on Kabaona Island.
     No ships sighted.
1517 Noted large two-masted sailboat approach Kabaona Island.
     I intended to search him but he closed land before sunset
1826 Surfaced and headed up to patrol Boni Gulf. I have
     hopes of finding the traffic routes used when crossing
     to Pomala and to Tioro Strait from Saloier. All the
     traffic I have sighted seems to pass through Saloier
     Strait north of Linkang Loo Island and then pass along
     the coast to anchor at night within the reefs north of
     Tg Labua in the vicinity of Lat: 5-10 S Long:120-20 E.
     South and West bound traffic passes Tiro Bay Lat:5-28 S.
     Long: 120-27 E. about 0800 while North and East bound
     traffic passes this Bay at about 1430.
     Noon Position: Lat: 4-57.4 S.; Long: 121-52.4 E.

14 September 1944 (40th day)

0115 Arrived on station about the center of Boni Gulf west
     of Pomala and commenced patrolling a line 30 mile long
     in a north and south direction.
1147 Aircraft contact on SD Radar - range 8 miles- closing.
     Aircraft Contact No.16.
     Plane not sighted. Submerged. During the morning we
     had had several radar contacts all about 20 miles at
     steady ranges. I considered these land contacts as we
     were very nearly that distance from land.
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SS272/A16
CONFIDENTIAL

U.S.S. REDFIN (SS272)

14 September 1944 (con't)

1233 Surfaced and continued patrol.
1504 Aircraft contact on SD Radar at range 19 miles -
     closing.
     Aircraft Contact No.17.
     Plane not sighted.
1507 Submerged at range 14 miles to avoid detection.
1758 Surfaced. Set course to patrol line between Tioro
     and Salcier Straits and to patrol tomorrow off Tioro
     Bay.
2200 Made radar contact on ship bearing 318 T. range 12650
     yards.
     Ship Contact No.16.
     Tracked target at 8 knots running on various courses
     between 340 T and 060 T.
2228 Closed target to 7000 yards about which time picked
     up target from bridge and made it out as a very small
     ship. There was still only one contact on the radar.
     Lowered soundhead and heard pinging from direction of
     target. I then decided he was a small escort and
     changed course to continue patrol. This ship was
     either out searching for us caused by aircraft re-
     port or was making passage to Pomalaa to report for
     escort duty. However, I hardly think an escort mak-
     ing passage would make a sound search, change course
     so often and run so slow if he were only making pass-
     age.
     Noon Position: Lat: 4-30 S. Long: 121-15 E.

15 September 1944 (1st day)

0318 Arrived on station off Tioro Bay and commenced surface
     patrol.
0536 Submerged and closed land to 2 miles for a patrol
     off Tioro Bay.
1103 Small engines aft, seatruck-type, ship about 300 tons,
     high bow with a raised gun platform on the bow passed
     on a northerly course. It carried a gun about the
     size of 40 mm.
     Ship Contact No.17.
     I had hoped surfaced and sunk him with the 4" but
     I had high hopes of more valuable ships passing soon.
1832 Surfaced.
2243 Made Radar contact on a ship at range 14600 yards,
     bearing 140 T.
     Ship Contact No.18.
     I closed this ship and saw he was very small. He pinged
     continuously. His screws were light and fast. De-
     cided he was too small to shoot but followed him to
     to see where he was going. He came from the direction
     of Pomalaa and went west through Salcier Strait. He
     probably was the same patrol contacted on a northwesterly
     -18-

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U. S. S. REDFIN (SS272
SS272/A16
CONFIDENTIAL

15 September 1944 (con't)

course at 2228 on 14 September.
2332 Broke off contact as target entered Saloier Strait.
     Continued patrolling.
     Noon Position: Lat: 5-31 S.; Long: 120-30. 8 E.

16 September 1944 (42nd day)

0531 Submerged and closed land for a patrol 2 miles off
     Tiro Bay.
1834 Surfaced. Set course to patrol the passes at the
     southern end of Saloier Island.
2009 Picked up radar interference on SJ Radar. It appeared
     to come from another SJ Radar, probably the Bonefish.
2019 Lost Radar interference.
     Noon Position: Lat: 5-32.5 S.; Long: 120-30.9 E.

17 September 1944 (43rd day)

0521 Arrived on station and commenced patrolling.
0700 Submerged off Strait at southern end of Saloier
     Island.
1555 Surfaced and headed east to patrol in Bocton Passage.
     Noon Position: Lat: 6-30 S.; Long: 120-33 E.

18 September 1944 (44th day)

0246 Passed south of Bocton Island and headed up Bocton
     Passage to hunt for traffic running close to shore.
0638 Submerged off Wajo Bay on the southern coast of
     Bocton Island. Headed into look around in Bay.
1351 Completed looking around in Wajo Bay. Nothing sighted.
     Headed out of bay in order to be 4 miles off land
     for surfacing.
1820 Surfaced and headed up towards Kendari and Staring Bay.
2033 Decided to return to Saloier Strait for patrol. It
     seems that our aircraft cover this area sufficiently.
     The distance to Saloier Strait is too great to make
     the approach during darkness therefore I will patrol
     tomorrow off the southern entrance to Bocton Strait
     and the Port of Bocton.
     Noon Position: Lat: 5-30.2 S.; Long: 122-58.8 E.

19 September 1944 (45th day)

0505 Arrived 15 miles southwest of Bocton and headed in
     toward the land for submerged patrol.
0510 Sighted small ship bearing 038 T. range about 20000
     yards. Unable to make radar contact.

-19-

— page 142 —
U.S.S. REDFIN (SS272)

SS272/A16
CONFIDENTIAL

19 September 1944 (con't)

0523 Ship Contact No.19.
     Submerged. Range closing rapidly and ship look
     like a patrol boat or very small Maru.
0554 Identified contact as small apparently unarmed
     fishing boat. Later identified by prisoner as
     the Nanko Maru a miscellaneous fishing trawler
     of 85 tons. As she passed close aboard the Redfin
     her crew could be seen throwing bait over the
     stern. Decided to surface and sink ship with gun.
0608 Surfaced with target at 7000 yards bearing 240 T.
     and headed towards at full speed. We were at this
     time only about 12 miles from the Tolaga Islands
     off the southern end of Kabacna Island.
0621 Commenced firing. Second shot was a hit. I do not
     believe that target saw the Redfin much before we
     opened fire as we approached from out of the sun.
     This belief was substantiated by the prisoner
     telling us that they were just starting to send
     out a distress signal when the radio operator
     was killed.
0624 Target turned towards the beach making all the
     speed she could.
0625 Changed course and placed Redfin between target
     and the beach. The target then turned south
     and very soon stopped. She had numerous holes
     in her waterline but would not catch fire. She
     put up absolutely no resistance at all.
0628 Slowed down to finish her off with slow deliberate
     fire. There was no sign of life aboard. The pilot
     house and all topside gear was a complete wreck.
0632 Sent 4" gun crew below and tried to set target on
     fire with 20 mm guns. We had fired about 35 rounds
     of high capacity and common together leaving great
     holes all along the waterline but had not fired
     the ship.
0638 No better luck with 20 mm. Stationed 4" gun crew
     and fired 4 more rounds of common into the hull.
     The first shot hit the right spot and the target
     burst into tremendous flames.
0643 Secured gun crews.

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U.S.S. REDFIN (SS272)

SS272/A16
CONFIDENTIAL

19 September 1944 (con't)

0654 Submerged to watch target burn and to see if there
     were any survivors.
0700 Noted several persons crawling around in wreckage.
     Did not try to pick up prisoners. Circled target three
     times and could see several persons swimming around
     ship to keep on off side from Redfin.
0730 Fired a few rounds of .45 cal and 20mm into super-
     structure of wreck. Large oil flame started which
     burned out into the water. This forced the survivors
     to swim away from the wreckage.
0742 Sighted a second ship, bearing 110 T., range about
     20000 yards. This ship appeared to be similar to the
     one we had just sunk. He did not appear to want to
     help his pal but instead headed back into port. At
     the time of this sighting he was very close to Kadatua
     Island and would have been in shallow water before I
     could have gotten within gun range.
     Ship Contact No.20.
0744 Had a hard time but finally succeeded in getting a
     prisoner aboard. They would pull all sorts of tricks
     such as play dead or hide under the debris. We caught
     this one by getting his feet tangled up in a heaving
     line and then dragging him alongside struggling as
     hard as he could. As soon as he found out that we
     were not going to kill him he lost all his nervous-
     ness and tried to answer all my questions. He said
     there were a total of 6 of these Trawlers at Bocton
     operated by civilians. They were originally stationed
     at Ambon, but the air raids there had driven them over
     to Bocton. He was only questioned regarding ships
     in this area and the route they used. Information re-
     ceived was of very little value. I did not attempt
     to pick up any more prisoners. The one I had seemed
     fairly intelligent and a good healthy boy. His only
     defect was a glass eye, which he kept wanting to take
     out and show to everyone. He said he was not in the
     navy.
0803 Submerged to watch wreck sink.
1218 Observed wreck sink and counted 15 survivors hanging
     onto debris which they had collected and tied together.
     The prisoner stated that there were 20 men aboard;
     therefore only four were killed during the attack.
     I imagine most of the 15 survivors reached the shore
     which was only 12 miles away with a good wind blowing
     them in that direction.
1703 Surfaced and headed for Saloier Strait.
     Noon Position: Lat: 5-34 S.; Long: 122-14 E.

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U.S.S. REDFIN(SS272)

SS272/A16
CONFIDENTIAL

20 September 1944 (46th day)

0206 Arrived off Tiro Bay and commenced patrol.
0530 Submerged and closed land to patrol 2 miles off beach.
1533 Sighted ship which was later identified as a new
     Japanese Auxiliary Transport, shown on page 11 of
     United States Pacific Fleet and Pacific Ocean Area
     Weekly Intelligence Bulletin, dated 28 July 1944.
     Ship Contact No.21.
     At time of sighting it was on true bearing 320 T.,
     range about 8000 yards, course 000 T. His escort
     a Trawler type was following astern about 1000 yards.
     Went ahead full speed for 10 minutes, but lost range
     and bearing rapidly. At the time of sighting this
     target was already by. When picked up we were 2½
     miles from Tg Tiro. We were just making a turn and
     trying to close the beach. This accounts for the
     Officer of the Deck not making contact earlier. This
     ship being very low and blending in with the shore
     background made him extremely hard to see. His speed
     was estimated at 12-15 knots.
1837 Surfaced and commenced patrol on east and west line
     keeping within 15000 yards of beach.
     Noon Position: Lat: 5-27.6 S.; Long: 120-30.2 E.

21 September 1944 (47th day)

0022 SJ Radar out of commission.
0235 SJ Radar back in commission.
0300 Made Radar contact on a single ship contact at range
     13400 yards, 047 T.
     Ship Contact No.22.
0309 Started approach. Tracked target on course 210 T.,
     speed 11 knots.
0315 Sighted target. It appeared to be very small. Slowed
     and set watch on sound. No pinging heard. Target's
     turn count 85 R.P.M. This turn count and the large
     radar pip lead me to believe this ship to be a worthy
     torpedo target.
0353 Fired four torpedoes spread for 150 % target length
     of 300 foot torpedo run of 2600 yards, depth set
     at 4 feet. The second torpedo ran erratic. It was
     one of the two set to hit. This torpedo curved left
     and for a few seconds was heading almost at the Redfin
     on a 90 degree port track. It then curved right and
     steadied down on a course about 60 degrees to the
     left of firing bearing. The other three ran straight
     and appeared to pass under or very close to the target.
     No hits.
0354 Turned away and opened range to 8000 yards and continued
     to track target. He took no counter measures but in-
     stead appeared to stop or circle in the very close
     vicinity of where he was when the torpedoes passed him.

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— page 145 —
S3272/A16
CONFIDENTIAL
U.S.S. REDFIN(SS272)

21 September 1944(con't)

0415 Decided I had made a mistake in firing at such a
     small target. Headed back in to be in position for
     patrol off Tiro Bay.
0519 Submerged and commenced patrol 2 miles off Tiro Bay.
     Target still in sight and would probably sight us very
     soon.
0600 Heard 3 very distant depth charges.
1015 Decided to close target of last attack for identifi-
     cation and to see what he was doing. He was still
     in the position of the attack.
1058 Identified target as Ex-Whale-Killer Boat. His tall
     heavy masts account for the large radar pip. He was
     making short swoops apparently searching with listen-
     ing gear only. No pinging was heard.
1100 Headed back in to patrol in close to the shore. This
     target remained in sight all day long.
1430 Sighted two ships approaching from the south very
     close into the beach.
     Contact No.23.
     Identified as 1-Scatruck, about 500-800 tons; and
     1-Trawler type. Both ships had guns on bow. Started
     in for attack.
1500 Broke off attack and watched ships go by at range of
     about 1200 yards. These ships were too small for
     torpedo attack. Continued patrol.
1545 Lost sight of targets.
1720 Sighted Pete-type aircraft flying very low on a west-
     erly course.
     Aircraft Contact No.18.
     This contact was very soon lost due to the haze.
     He was probably flying an A/S Patrol.
1746 Observed Trawler, which passed with Scatruck, at
     1500 join the Ex-Whale-Killer and start patrolling.
1810 Observed the following signal passed by light from
     Ex-Whale-Killer to Trawler, "DUL-MIT-206-MIT-071 UU".
     There was further signalling but unable to read it.
     Decided to surface in close to the beach and slip
     out with the land as a background.
1830 Surfaced and headed south at full speed. Range to
     closest escort 7500 yards. They were on southerly
     courses at speed of about 13 knots.
1836 Observed Red and Green flares fired either by the
     escorts or by a sailboat, which we had just passed
     close aboard and was at the time very nearly on a
     bearing with the escorts. The escorts then turned
     towards the Redfin but were unable to close due to
     our superiority in speed. I was surprised that they
     did not open fire.

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U.S.S. REDFIN(SS272)
SS272/A16
CONFIDENTIAL

21 September 1944 (con't)

1842 With range opening nicely changed course to open
     the land and to head down to patrol tomorrow at
     the south end of Saleier Island.
1905 Lost contact with pursuing escorts. I think they
     gave up the chase and headed in a little towards
     Tiro Bay.
     Noon Position: Lat: 5-26.8 S.; Long: 120-26.8 E.

22 September 1944 (48th day)

0002 Arrived on station and commenced patrol about 8
     miles 090 T. from the southern end of Saleier Island.
0230 Noted strong radar interference on SJ Radar, apparently
     coming from another SJ Radar.
0245 Exchanged challenge and calls with Coro.
0256 Made radar contact on Coro at 12800 yards, 035 T.
     Opened out so as not to be in his way, going south
     and then continued patrol.
0400 Lost contact with Coro at 16450 yards.
0547 Submerged and closed land for patrol 2 miles off
     Tg Batulaja on Saleier Island.
1823 Surfaced and headed northeast to patrol tomorrow off
     Tg Lamulu. Lat: 4-41 S.; Long: 121-27 E. This spot
     will cover traffic going south towards Tioro Straits.
     Noon Position: Lat: 6-31 S.; Long: 120-32 E.

23 September 1944 (49th day)

0607 Arrived on station. Submerged and commenced patrolling
     a north and south line off Tg Lamulu.
1308 Sighted two small ships on course 090 T., speed about
     8 knots, bearing 250 T., range about 16000 yards.
     Ship Contact No.24-A
     Started in for attack.
1330 Broke off attack when I saw they were the same two
     ships as Ship Contact No.23 (1-Scntruck and 1-Trawler).
     This area is certainly full of small stuff.
     This contact was valuable in that it told me where
     the traffic crosses Boni Gulf. These ships approached
     Tg Lamulu from a bearing of 270 and when about 2 miles
     off the beach they turned southeast and passed be-
     tween the reefs and the coast of Celebes. This is a
     much better place for patrol as it gives you a good
     clear view of approaching targets. This group of
     ships spent an extra day on the west coast of Boni Gulf.

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U.S.S. REDFIN (SS272)

SS272/A16
CONFIDENTIAL

23 September 1944(con't)

1838 I guess the Trawler had to help the Ex-Whale-Killer
     all day 22 September searching for us near Tiro Bay.
     Surfaced and continued patrol in this vicinity.
     Noon Position: Lat: 4-40.5 S; Long:121-25.4 E.

24 September 1944(50th day)

0047 Received instructions to proceed to Makassar Straits
     in the vicinity of Balikpapan for life guard duty
     starting at dawn 25th. Headed for Seleier Strait
     at 18 knots.
0525 Cleared Seleier Strait just at sunrise. It was
     a hard push to arrive on station on time. We were
     lucky not being any later as I would have to run
     this pass, which is only 3 miles wide, any later
     in the day.
0650 Aircraft contact on SD Radar - range 12 miles.
     Submerged to avoid detection.
     Aircraft Contact No.19.
     Plane not sighted.
0800 Surfaced and proceeded at 18 knots.
1348 Passed 10 miles northeast of Bankaulunan Island -
     Lat: 6-30 S.; Long: 118-38 E., and directed course to
     pass midway between Marasende Island and Taka Bakang
     Reef.
1536 Cleared Islands and Reefs and headed north towards
     Cape Mandar. I was very much surprised not to be
     molested with aircraft nor patrol boats while passing
     so near Makassar City during daylight. Noted a large
     bush fire which covered practically all of Marasende
     Island.
1745 Sighted single sailboat on a crossing course. He
     seemed about 20 tons and since it would delay me to
     run around him I decided to board and search.
     Ship Contact No.24-B.
1815 Fired a short burst across bow of sailboat with 20mm.
     He was on an easterly course making about 6 knots. He
     paid absolutely no attention to my fire. I then went
     close aboard and noted several people on board. Noted
     a flag at his peak that appeared to be Japanese.
1817 For the next five minutes I tried every means possible
     to make this boat stop. I fired forward and aft. of
     him and then through his sails and still he would not
     stop. This convinced me that the boat was either
     carrying Japanese or in the hire of the Japs.
1823 Opened fire on boat with 20mm. These had very little
     effect. He continued to hold course and speed. One
     burst parted his main sheet but he repaired this and
     continued on his way.
1832 Opened fire with 4" gun.
1836 Ceased fire with 4" gun. Boat sunk.

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SS272/A16
CONFIDENTIAL
U.S.S. REDFIN(SS272)

24 September 1944(con't)

1848 Wont alongside and picked up two very slight
     wounded survivors, both Malayans and very much
     shell-shocked.
1913 Unable to pick up anymore survivors, continued on
     towards Cape Mandar at 17 knots.
     Noon Position: Lat: 5-44.3 S.; Long: 119-03 E.

25 September 1944(51st [HANDWRITTEN: Day])

0100 Received instructions to take station between point
     45 and 55 miles 090 from Balikpapan for life guard
     duty commencing at 1100 today.
0142 Cleared Cape William and directed a course for station.
0600 Set watch on life guard frequency and secured submarine
     voice circuits.
0808 Arrived on station and submerged.
1039 Surfaced and commenced patrolling a line 090-270,
     10 miles in length. The western end of the line was
     45 miles 090 from Balikpapan. Zigzagging at 14 knots.
1540 Sighted what turned out to be a single unescorted
     loaded medium sized tanker about 5000 tons(SU) on
     course about 090 T., speed 10 knots, bearing 345 T.,
     range 24000 yards.
     Ship Contact No.25.
     Changed course to the east to track and attack. I was
     able to maintain sight contact and to get on his track
     without being sighted.
1743 Commenced hearing conversation between planes apparently
     engaged in a strike, also heard one plane say that he
     was going to "Pancake" but no reference point was given.
     Thinking that this might be the strike on Balikpapan I
     decided to attack immediately and return to life guard
     station.
1758 Submerged and commenced approach.
1827 Target making 85 R.P.M.
1844 Obtained a ping range of 1700 yards. This agreed with-
     in a 100 yards of the periscope range. I had been using
     50 feet for stack height above waterline. The tanker
     was loaded and low in the water. Because of darkness
     I was unable to identify target.
1845 Fired four torpedoes, depth set at 5 feet.
1847 Observed and heard one hit amidships. Target immediately
     exploded and commenced to burn from bow to stern with
     fire spreading rapidly out on water. The flames were
     about 300 feet high. There may have been more hits but
     they were not heard. It is believed that the target was
     actually making less than 10 knots and that the last
     torpedo is the one which hit.
1848 Came left to open out.

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— page 149 —
SS272/-16
CONFIDENTIAL
U.S.S. R.DFIN(SS272,

25 September 1944(con't)

1850 Surfaced and proceeded at 17 knots to regain life
     guard station. Took pictures of burning ship. It
     appeared that the bow was under, his stern was
     tilted upward slightly and burning furiously. I
     am sure the destruction of this target was complete.
     I did not deem it worth while to search for survivors,
     because the fire completely enveloped the target in-
     stantly. I think the target was carrying gasoline.
     The Japs must have needed gas at some station pretty
     badly to send such a valuable target out unescorted.
     From his course at time of firing I think the target
     was heading over for the Celebes coast and going then
     north through McKassar Strait.
2025 Arrived back on station and continued patrol.
     No more word from aviators.
     Noon Position: Lat: 1-00 S.; Long: 117-45 E.

26 September 1944(52nd day)

0545 Made trim dive.
0603 Surfaced.
0946 Submerged, because numerous sailboats in this vicinity.
     Made hourly searches on SD Radar and listening on
     voice frequency for word of strike.
1732 Surfaced.
1746 Noted interference on SJ Radar. Unable to determine
     direction. It did not last more than 5 minutes.
     It appeared to come from another SJ Radar.
     Noon Position: Lat: 1-10 S.; Long: 117-45 E.

27 September 1944(53rd day)

0558 Submerged to avoid detection - making 30 minutes
     sweep with SD Radar and radio voice frequency.
0927 Surfaced to take sun line. We have had no fix for
     two days navigating during this time by fathometer.
0937 Aircraft contact on SD Radar at range 12 miles.
     No word over voice frequency.
     Submerged to avoid detection.
     Aircraft Contact No.20.
1712 Surfaced and continued patrol of spot on surface.
     Noon Position: Lat: 1- 5 S.; Long: 117-50 E.

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CONFIDENTIAL

U.S.S. REDFIN (SS272)

28 September 1944 (54th day)

0042 Received instructions to return to Fremantle, via
     Lombok Strait. Set course for Cape William at
     18 knots.
0600 Passed Cape William about 16 miles.
0648 Passed close aboard large sailboat. He dropped his
     sails and all hands lined the rail and started bowing.
     Continued on course.
0720 Set course for Lima Islands.
0843 Sighted small ship bearing 275 T., range about 20000 yds.,
     course 110 T.
     Ship Contact No.26 (EU)
     Commenced tracking.
0907 Submerged on target's track and headed directly for
     him. This target approached very slowly on a steady
     course.
1025 Changed course to get off target's track. Range
     2500 yards. Target was identified as a small patrol
     boat. Apparently stopped at time I changed course.
     He had a single mast forward, engines aft, with what
     appeared to be depth charge racks protruding over the
     stern, and a small gun forward. He was painted war
     color and had white lettering on his bow. His lines
     indicated that he was capable of making good speeds.
     I presume that he had seen us and had gone over to
     make a sound search.
1245 Patrol boat apparently got underway and stood off as
     he was suddenly lost from sight.
1305 Surfaced and continued towards Lima Islands at 17
     knots.
1904 Passed east of Lima Islands and headed down towards
     Lombok Strait.
     Noon Position: Lat: 3-34 S.; Long: 118-06.5 E.

29 September 1944 (55th day)

0515 Noted interference on SJ Radar, apparently coming
     from another SJ Radar.
0542 Exchanged recognition signals and calls with USS Ray.
     Ship Contact No.27.
0649 Submerged about 25 miles north of Lombok Strait.
     At time of diving noted interference on SD Radar.
     Continued course to pass through Lombok Strait
     submerged.
1835 Cleared Lombok Strait - no contacts.
1900 Surfaced and set course for Fremantle at 4 engine
     speeds.
2200 Rigged No. 3 F.B.T. as a M.B.T.
     Noon Position: Lat: 08-19 S.; Long: 115-53 E.

-28-

— page 151 —
U.S.S. RELFIN(SS272)
SS272/A16
CONFIDENTIAL

30 September 1944(56th day)
Enroute Lombok to Fremantle, W.A.
0715 Sighted submarine bearing 185 T. on course
     005 T.
     Ship Contact No.28.
0720 Submarine submerged. I then changed course
     to avoid.
0728 Submarine surfaced. Resumed course and
     exchanged recognition signals.

Noon Position: Lat: 13-17.5S Long: 114-57.S

1 October 1944(57th day)

Enroute Fremantle, W.A.

2 October 1944(58th day)

Enroute Fremantle, W.A.

3 October 1944(59th day)

Enroute Fremantle, W.A.

4 October 1944(60th day)

Arrived Fremantle, W.A.

-29-

— page 152 —
U.S.S. REDFIN (SS272)

SS272/A16
CONFIDENTIAL
(C) WEATHER

The weather throughout the patrol was good, except
during our short stay off Balikpapan it was contin-
uously overcast making it extremely difficult to
maintain station.

(D) TIDAL INFORMATION

The tides encountered agreed with those described
in the Coast Pilot and other Aids to Navigation.

(E) NAVIGATIONAL AIDS

St Pierre (Petrus Island Light, Lat: 1-54 S.
Long: 108-40 E. and South Natuna Islands Light,
summit of Sulikochil Island, Lat: 3-03 S.
Long: 108-51 E were seen to be burning on
17 August with normal characteristics and
apparently reduced power.

-30-

— page 153 —
SS272/A16
CONFIDENTIAL

U.S.S. REDFIN (SS272)

(F)
SHIP CONTACTS
No | Time/ | Lat/ | Type | Initial | Course/ | How con- | Remarks
   | Date  | Long. |      | range-yds. | Speed   | tacted   |
---|-------|-------|||||
1  | 0015  | 23-50N | US SS              | 12000      | 143 T.    | S        |
   |       | 7 Aug 112-36E. (EC) |                    |            | 14 kts.   |          |
---|-------|-------|||||
2  | 1501  | 21-00S. US SS | 12000      | 187 T.    | S        |
   |       | 8 Aug 113-00E. (EC) |                    |            | 15 kts.   |          |
---|-------|-------|||||
3  | 0220  | 14-30S. US SS | 7800       | 198 T.    | R        |
   |       | 12 Aug 114-51E (EC) |                    |            | 11 kts.   |          |
---|-------|-------|||||
4  | 2057  | 6-34S Cabrilla | 60000      | 180 T.    | R        | Exchanged
   |       | 13 Aug 116-37E (EC) |                    |            | 17 kts.   |          | recognition
   |       |                     |            |           |          | signals.
---|-------|-------|||||
5  | 0207  | 5-42S SC           | 11000      | 050 T.    | R        |
   |       | 15 Aug 113-22E (EU) |                    |            | 14 kts.   |          |
---|-------|-------|||||
6  | 0514  | 4-46S US SS        | Unknown    | Unknown   | R        |
   |       | 15 Aug 110-58E (EU) |                    |            | (poorly   |          |
   |       |                     |            |           | sound)    |          | Not sighted
   |       |                     |            |           | (esti.)   |          |
---|-------|-------|||||
7  | 1243  | 2-28N 3 U/I        | Unknown    | 100 T.    |          | Not sighted
   |       | 19 Aug 110-02E (EU) |                    |            |           |          |
---|-------|-------|||||
8  | 1525  | 3-02N 2-DD or SC | 16000      | 270 T.    | F        | Attacked
   |       | 20 Aug 111-23E 1-AO small |                    |            | 9 kts.    |          | on surface.
   |       |                     |            |           |          |          | No Hits.
   |       |                     |            |           |          |          | 1-AO large
   |       |                     |            |           |          |          | 1-AK med.
   |       |                     |            |           |          |          | 3-AP large
   |       |                     |            |           |          |          | 2-AK large
---|-------|-------|||||
9  | 1535  | 3-02N 3-U/I        | Unknown    | Unknown   | P        | Only smoke
   |       | 20 Aug 111-23E (EU) |                    |            |           |          | sighted.
---|-------|-------|||||
10 | 1419  | 3-40N SS (EU)      | 1000       | 140 T.    |          | Periscope
   | A.    | 21 Aug 111-40E |                    |            | 3 kts.    | SD of SS |
   | 0218  | 8-48N 1-Seatruck | 6000       | Anchored  | R        | (Gun action
   | B.    | 31 Aug 117-54E (EU) 200 tons |                    |            |           |          | & very little
   |       |                     |            |           |          |          | damage due
   |       |                     |            |           |          |          | to darkness).
---|-------|-------|||||
11 | 1404  | 1-38S SC(EU)       | 14000      | 355 T.    | SD       |
   |       | 2 Sep 126-35E |                    |            |           |          |
---|-------|-------|||||
12 | 1011  | 5-39S 1-AK(3000 tons-EU) |            | 270 T.    | F        | Unable to
   |       | 10 Sep 120-29E 2-U/I Escorts-EU. | 15000      | 7 kts.    |          | close.
---|-------|-------|||||
13 | 1601  | 5-35S 1-M/L        | 5000       | 180 T.    | F.       | (Small boat
   |       | 10 Sep 120-29E (EU) |                    |            | 10 kts.   |          | apparently
   |       |                     |            |           |          |          | used for inter-island
   |       |                     |            |           |          |          | communication)
---|-------|-------|||||
14 | 0718  | 5-29S 1-AK(2000 tonsEU) | 10000      | 100 T.    |          | Unable
   |       | 12 Sep 120-29E 1-YN(EU) |                    |            | 6 kts.    |          | to close
   |       |                     |            |           |          |          | 1-MTB(EU)
---|-------|-------|||||
15 | 1335  | 5-29 S 1-AO(5000 tons) | 20000      | 000 T.    | F        | One hit
   |       | 12 Sep 120-29.8 1-PC(EU) |                    |            | 6 kts.    |          | in AO
---|-------|-------|||||
16 | 2200  | 5-25S SC(EU)       | 12650      | 340-060   | R.       | Patrolling
   |       | 14 Sep 120-59E |                    |            | 6 kts.    |          |
---|-------|-------|||||
17 | 1103  | 5-25S Seatruck     | 6000       | 000 T.    | I.       |
   |       | 15 Sep 120-29E (EU) |                    |            | 6 kts.    |          |
---|-------|-------|||||
18 | 2243  | 5-28S SC(EU)       | 14600      | 230 T.    | R        |
   |       | 15 Sep 120-54E |                    |            | 6 kts.    |          |
---|-------|-------|||||
                                                                    -31-

— page 154 —
CONFIDENTIAL
U.S.S. REDFIN (SS272)

(F)
No | Time/ | Lat/ | SHIP CONTACTS -CON'T
   | Date  | Lon  | Type | Initial | course/ | Remarks
   |       |      |      | ran_c-yds. | speed. |
19 | 0510 | 5-36S | Fishing Trawler | 20000 | 230 T. | SD Sank
   | 19 Sep | 122-16E | (EC) 85 tons. |       | 7 kts. | with
   |        |         | Nanko-Maru. |       |        | gun.
20 | 0742 | 5-38S | Fishing Trawler(EU) | 20000 | 000 T. | SD Heading
   | 19 Sep | 122-24E | 85 tons. |       | 7 kts. | into port.
21 | 1533 | 5-25S | 1-New Jap.Aux. | 8000 | 000 T. | P Unable to
   | 20 Sep | 120-29E | transport(EC) |       | 12-15 kts. | close for
   |        |         | 1-Trawler type escort(EU) |       |        | attack.
22 | 0300 | 5-26S | 1-Ex-Whale-Killer boat | 13400 | 247T. | P 4 misses.
   | 21 Sep | 120-46E | (EC) |       | 11 kts. |
23 | 1430 | 5-25S | 1-Scoutruck(EU) | 11000 | 000 T | P Too small
   | 21 Sep | 120-29E | 1-Trawler(EU) |       | 8 kts. | for torpedo
   |        |         |               |       |        | attack.
24 | 1300 | 5-05S | Same as (EU) | 16000 | 090T | P do
   | A. 23 Sep | 121-25E | contact No.23 |       | 8 kts. |
24 | 1745 | 4-31S | 1-20ton Native | 6000 | 120 T. | SD Sunk, by
   | B. 24 Sep | 118-26E | Prau(EU) |       | 6 kts. | gun fire.
25 | 1540 | 1-08S | 1-Mod. Tanker | 24000 | 090 T. | SD Sunk.
   | 25 Sep | 117-45E | (EU) 5000 tons. |       | 10 kts. |
26 | 0043 | 3-38S | 1- Patrol craft | 20000 | 120 T. | SD Apparently
   | 28 Sep | 118-13E | (EU) |       | 3 kts. | engaged
   |        |         |               |       |        | in A/S
   |        |         |               |       |        | patrol.
27 | 0542 | 7-55S | SS-USS Ray(EC) | 40000 | 020T. | R
   | 29 Sep | 116-10E |               |       | 15kts. |
28 | 0715 | 12-06S | SS-British(EC) | 10000 | 005T | SD exchanged
   | 30 Sep | 115-20E |               |       | 12 kts. | recognition
   |        |         |               |       |        | signals
   |        |         |               |       |        | only.

-32-

— page 155 —
SS272/A16
CONFIDENTIAL
U.S.S. REDFIN

AIRCRAFT CONTACTS
No | time/ | Lat,    | (G) | Type         | Initial   | Course/ | How con- | Remarks.
   | date  | Long.   |     |              | range-Mi. | Speed.  | tacted.  |
1  | 1254  | 02-18N  |     | Emily        | 10        | 200 kt  | P        | Air cover for
   | 19 Aug| 109-46E |     |              |           |         |          | convoy.
2  | 1149  | 03-01N  |     | U/I          | 15        |         | R        | Sighted.
   | 20 Aug| 111-10E |     |              |           |         |          | Not
3  | 1435  | 3-41N   |     | U/I          | 19        |         | R        | Sighted.
   | 21 Aug| 111-41E |     |              |           |         |          | Not
4  | 0939  | 8-14N   |     | U/I          | 4         |         | R        | Not sighted.
   | 28 Aug| 120-30E |     |              |           |         |          |
5  | 1105  | 8-13N   |     | Sally        | 14        | 120T    | R        |
   | 31 Aug| 118-39E |     |              |           | 200     |          |
6  | 0834  | 3-54N   |     | U/I          | 14        |         | R        | Not sighted.
   | 1 Sep | 121-27E |     |              |           |         |          |
7  | 1212  | 3-42N   |     | U/I          | 28        |         | R        | Not sighted.
   | 1 Sep | 122-05E |     |              |           |         |          |
8  | 0138  | 1-45N   |     | U/I          | 5         | 340 T   | R        | Later sighted,
   | 2 Sep | 125-22E |     |              |           | 160     |          | very bright moon.
9  | 0347  | 00-30N  |     | U/I          | 6         | 180 T   | R        | Not sighted.
   | 2 Sep | 125-52E |     |              |           | 160     |          |
10 | 0936  | 0-28N   |     | U/I          | 8         |         | R        | Not sighted.
   | 2 Sep | 126-05E |     |              |           |         |          |
11 | 1201  | 6-06N   |     | B-24 or B-25 | 12        | 160T    | SD       | Probably a return-
   | 3 Sep | 125-49E |     |              |           | 200     |          | ing Recco.
12 | 0625  | 10-05S  |     | U/I          | 12        |         | R        | Probably a Jap
   | 4 Sep | 128-25E |     |              |           |         |          | search or a friend-
   |       |         |     |              |           |         |          | ly bomber returning.
13 | 0914  | 10-14S  |     | U/I          | 15        |         | R        | do
   | 4 Sep | 128-32E |     |              |           |         |          |
14 | 1647  | 5-08S   |     | B-25         | 36        | 330T    | SD       | Bombing mission.
   | 4 Sep | 125-37E |     |              |           | 250     |          |
15 | 1525  | 9-35S   |     | U/I          | 22        |         | R        | Not sighted
   | 7 Sep | 128-05E |     |              |           |         |          |
16 | 1147  | 4-29S   |     | U/I          | 8         |         | R        | Not sighted
   | 14 Sep| 121-14E |     |              |           |         |          |
17 | 1504  | 4-24S   |     | U/I          | 19        |         | R        | Not sighted
   | 14 Sep| 121-14E |     |              |           |         |          |
18 | 1720  | 5-36S   |     | Foto         | 4         | 270T    | P        | A/S Patrol.
   | 21 Sep| 122-16E |     |              |           | 150     |          |
19 | 0650  | 5-54S   |     | U/I          | 12        |         | R        | Not sighted.
   | 24 Sep| 120-05E |     |              |           |         |          |
20 | 0937  | 01-10S  |     | U/I          | 12        |         | R        | Not sighted.
   | 27 Sep| 117-44E |     |              |           |         |          |

-33-

— page 156 —
U.S.S. REDFIN(SS272)

SS272/416
CONFIDENTIAL
(H)
U.S.S. REDFIN(SS272) GUN ATTACK NO. 1 PATROL NO. 4
TIME: 0241 DATE: 31 Aug.1944: LAT: 8-48 N.LONG: 117-54 E.

TARGET DATA - DAMAGE INFLICTED

Sunk:
None.

Damaged or
Probably Sunk: 1-Seatrack - 200 tons (JU)
             Ship Contact No.10B.

Damage Determined by:

             It is thought that we got two or three
hits. The hits were determined by radar spots. All
other splashes could be seen but those which were
called hits by radar could not be seen. It was a
dark night with land background. During the action
the target got underway and stood in closer to land.
He could not be very badly damaged.

DETAILS OF ACTION

             Target at anchor. Opened fire at
2800 yards, visibility poor with land background.
Closed range to 2200 yards during firing. Pointor
and Trainor had difficulty seeing target, making
fire erratic and spotting by radar failed to bring
shots on the target. 27 of 4" and 58 rounds of
20mm were expended. Target got underway after
about ten shots and retired toward shore. Continued
fire until unable to see target through sights.

-34-

— page 157 —
U.S.S. REELFIN (SS272)

SS272/A16
CONFIDENTIAL
(H)
U.S.S. REELFIN (SS272) GUN ATTACK NO. 2 PATROL NO.4
TIME: 0621 DATE: 19 Sept.1944 LAT: 5-36 S; LONG:122-16 E

TARGET DATA - DAMAGE INFLICTED

Sunk: 1-Fishing Trawler - Nanko Maru - 85 tons (M)
Ship Contact No.19.

Damaged or
Probably sunk: None.

Damage Determined
by: Observed target burn and later sink.
Picked up one Japanese survivor who
gave me the name and tonnage of his
ship. Observed 15 other survivors
clinging to wreckage after ship sank.

DETAILS OF ACTION

Surfaced with target at 3800 yards. Opened fire
at 3800 yards range, second shot was a hit.
Fired 41 rounds high capacity and 3 rounds of common
ammunition from 4" gun. Average range was 1500 yards.
Second round fired was a hit and obtained a total of
about 35 hits. Used Radar to assist spotting. Fired
600 rounds of 20mm ammunition to attempt sinking target.
20mm was not effective against heavy wooden hull.

-35-

— page 158 —
SS272/A16
CONFIDENTIAL
(H)

U.S.S. REDFIN(SS272)

U.S.S. REDFIN(SS272) GUN ATTACK NO.3 PATROL NO.4
TIME: 1815 DATE: 24 Sept.1944 LAT: 4-31 S. LONG:118-26 E.

TARGET DATA - DAMAGE INFLICTED

Sunk: One Sailboat - Native Prau About 20 tons.
Ship Contact No.24.B

Damaged or
Probably Sunk: None.

Damaged
determined by: Observed target sink and picked up
two survivors.

DETAILS OF ACTION

Fired 360 rounds of 20mm - range 800 yards.
Did not set target on fire. Fired 10 rounds of
4" ammunition at range 500 yards. Seven rounds
of common had little effect, failing to detonate
on hitting light structure of boat. Two hits of
the three high capacity quickly sank the target.

-36-

— page 159 —
U.S.S. REDFIN(SS272)
SS272/A16
CONFIDENTIAL
(H)
U.S.S. REDFIN(SS272) TORPEDO ATTACK NO.1 PATROL NO.4

TIME: 2248 DATE: 20 Aug.1944 LAT: 2-43.2 N. LONG:110-39.5 E

TARGET DATA - DAMAGE INFLICTED

Description: Convoy of eight ships and at least two
escorts. See page 5 of Narrative for
description of formation. The target of
this attack was the starboard escort(LU)

Ship(s) Sunk: None.

Ship(s) Damaged: None.

Damage Determined by: No damage.

Target craft: 8 Course: 207 Speed:11 Range:3200 yds.
(at firing)

OWN SHIP DATA

Speed: 12 Course:115 Depth: Surface Angle:

FIRE CONTROL AND TORPEDO DATA:

Type Attack:

Because of the shallow water it was decided
to make a surface attack. The starboard
escort was most active in his patrol. It
appeared that the only chance to get in
was to first sink this escort.
Continuous TBT bearings were used in
firing.
All torpedoes missed astern.

-37-

— page 160 —
SS272/A16
CONFIDENTIAL
(H)
U.S.S. REDFIN(SS272)

U.S.S. REDFIN(SS272) TORPEDO ATTACK NO. 2 PATROL NO.4
TIME: 2250 DATE: 20 Aug.1944 LAT:2-43.2 N. LONG:110-39.5E.

TARGET DATA - DAMAGE INFLICTED

Description: Same as attack No.1.

Ship(s) Sunk: None.

Ship(s) damaged
or probably sunk: None.

Damage determined by: No damage.

Target draft: 8 Course: 217 Speed: 11 Range: 3200(at firing)

OWN SHIP DATA

Speed: 20 Course: 295 Depth: Surface Angle:

FIRE CONTROL AND TORPEDO DATA

Type Attack:-

Radar surface. Since all four torpedoes of
attack No.1 missed two more were fired after
the turn still trying to sink this starboard
escort.
Torpedoes were not seen.

-38-

— page 161 —
U.S.S. REDFIN(SS272)
SS272/A16
CONFIDENTIAL
(H)

U.S.S. REDFIN(SS272) TORPEDO ATTACK NO. 3 PATROL NO.4.
TIME: 2348 DATE: 20 Aug.1944 LAT: 2-27.2 N. LONG:110-38.3 E.

TARGET DATA - DAMAGE INFLICTED

Description: Same formation as in Attacks Nos. 1 and 2.
The target was again the starboard escort.

Ship(s) sunk: None.

Ship(s) damaged
or probably sunk: None.

Damage determined by: No damage.

Target draft: 8 Course: 060 Speed: 14.5 Range: 3900 (at firing)

OWN SHIP DATA

Speed: 20 Course: 080 Depth: Surface Angle:

FIRE CONTROL AND TORPEDO DATA

Type Attack:
Since we had missed the starboard escort
with six I decided my best chance of getting in
would be to come up from the rear. Accordingly
I got astern of the convoy and started closing on
Ship No.7 I intended to approach from the starboard
quarter and fire when the target zigged right. The
starboard escort detected us coming in and opened
fire at range 3100 yards. One torpedo was fired
down the throat just to confuse him.

-39-

— page 162 —
SS272/A16
CONFIDENTIAL

U.S.S. REDFIN(SS272)

(H)

U.S.S. REDFIN(SS272) TORPEDO ATTACK NO. 4 PATROL NO. 4.

TIME: 1423 DATE: 12 Sept.1944 LAT: 5-29 S.; LONG:120-29.8 E.

TARGET DATA - DAMAGE INFLICTED

Description: 1-Medium Tanker (MKF) 5000 tons(EU)
             1-Escort PC-13 type(EU)

Ship Contact No.15.

Ship(s) Sunk: None.

Ship(s) Damaged
or probably sunk: 1-Medium Tanker - 5000 tons(EU)

Damage determined by:

             One hit heard at proper time for range to target.
             Escort remained in immediate vicinity of attack
             for several hours, leading me to believe he
             might be picking up survivors. He made only
             one depth charge attack.
Target Draft: 24 Course: 357 Speed: 8.5 Range:2300 yds.
                                                (at firing)

OWN SHIP DATA

Speed: 3 Course: 270 Depth: 65 Angle: Zero(at firing)

FIRE CONTROL AND TORPEDO DATA

Type Attack: Submerged periscope attack - continuous
             periscope bearings.
             We were so close to land that it was impossible
             to get a ping range.

-40-

— page 163 —
U.S.S. REDFIN (SS272)
SS272/A16
CONFIDENTIAL
(H)
U.S.S. REDFIN (SS272) TORPEDO ATTACK NO.5 PATROL NO.4
TIME: 0353 DATE: 21 Sept.1944 LAT: 5-26 S. LONG: 120-46 E.

TARGET DATA - DAMAGE INFLICTED

Description: Single ship, Ex-Whale-Killer - 264 tons.
  At the time of this attack it was thought
  that this target was much larger, however
  a careful examination during daylight placed
  it definitely as an Ex-Whale-Killer(SC).
  Ship Contact No.22.

Ship(s)
Sunk or
Damaged: None.

Damage determined by: No damage.

Target draft: 5 Course: 235 Speed: 10.5 Range: 2400 yds.
  (at firing)

OWN SHIP DATA

Speed: 12 Course: 297 Depth: Surface Angle: [UNCLEAR: blank]

FIRE CONTROL AND TORPEDO DATA

Type Attack: Night radar surface attack. Target was
  zig-zagging very little. Number 2 torpedo
  ran erratic. The three good torpedoes
  ran under or very close to the target.
  I am sure had he been just a little larger
  we would have gotten a hit.

-41-

— page 164 —
SS272/A16
CONFIDENTIAL
(H)
U.S.S. REDFIN(SS272)

U.S.S. REDFIN(SS272) TORPEDO ATTACK NO. 6 PATROL NO. 4.

TIME: 1845 DATE: 25 Sept. 1944 LAT: 1-06 S. LONG: 116-01 E.

TARGET DATA - DAMAGE INFLICTED

Description: Unescorted medium tanker, estimate 5000 tons.
           Poor visibility during daylight prevented
           better identification.
           Ship Contact No.25.

Ship(s) Sunk: 1-Medium Tanker(EU) 5000 tons.
           Observed and heard one hit. Ship exploded
           and burned with flames reaching 300 feet.
           Burning gasoline spread out on water
           all around target, except stern. The stern
           was seen to be up in the air and burning
           furiously.

Ship(s) Damaged
or Probably Sunk:
           None.

Damage Determined by: Surfaced five minutes after
           firing and watched target burn.

Target draft: 24 Course: 076 Speed: 10 Range: 1570 yds.
           (at firing)

OWN SHIP DATA

Speed: 3 Course: 345 Depth: 63 Angle: Zero(at firing)

FIRE CONTROL AND TORPEDO DATA

Type Attack:
           Submerged periscope attack with continuous
           bearings during the firing of torpedoes.
           Made contact while cruising on surface in
           daylight. Made one around run and attacked
           just after sunset. As an aid to possible
           better identification of this target I
           used 50 feet stack height to waterline.
           Periscope ranges agreed within 100 yards
           of ping range.

-42-

— page 165 —
U.S.S. REDFIN(SS:   )
SS272/416
CONFIDENTIAL

(H) Torpedo Attack No.1

|             | NO. 1   | NO. 2   | NO. 3   | NO. 4   |
||||||
| Tubes fired.| 078 S   | 077 S   | 076 S   | 075 S   |
| Track angle | 350     | 349     | 349     | 346     |
| Gyro angle  | 6       | 6       | 6       | 6       |
| Depth set   | High    | High    | High    | High    |
| Power       | Miss    | Miss    | Miss    | Miss    |
| Hit or Miss | No      | No      | No      | No      |
| Erratic     | 23      | 23      | 23      | 23      |
| Mark Torpedo| 41666   | 49769   | 49850   | 49888   |
| Serial No.  | 6-5     | 6-5     | 6-5     | 6-5     |
| Mark Exploder| 257 29  | 25369   | 25771   | 25682   |
| Serial No.  | Contact | Contact | Contact | Contact |
| Actuation set.| -     | -       | -       | -       |
| Actuation actual.| 16-1 | 16-1    | 16-1    | 16-1    |
| Mark Warhead| 17085   | 17441   | 17435   | 17383   |
| Serial No.  | TPX     | TPX     | TPX     | TPX     |
| Explosive   |         |         |         |         |
| Firing interval 8 Sec. |         |         |         |
| Type spread | Divergent. |         |         |         |
| Sea conditions. Calm.  |         |         |         |
| Overhaul activity U.S.S. ORION. |         |         |         |
| Remarks.    |         |         |         |         |

-43-

— page 166 —
SS272/A16
CONFIDENTIAL

(H)

Tubes fired
Track angle
Depth set
Power
Hit or Miss
Erratic
Mark Torpedo
Serial No.
Mark Exploder
Serial No.
Actuation set
Actuation actual
Mark Warhead
Serial No.
Explosive
Firing interval
Type spread
Sea conditions.
Overhaul activity
Remarks. U.S.S. REDFIN (SS272)

Torpedo Attack No.2.

No. 7 | No. 8
100 S | 102 S
204 | 206
6 | 6
High | High
Miss | Miss
No | No
18 | 18
53956 | 53925
4-7 | 4-7
16804 | 16937
Contact | Contact
- | -
18 | 18
886 | 650
TPX | TPX
10 sec.
Divergent
Calm.
Subicco.

-44-

— page 168 —
SS272/A16
CONFIDENTIAL
(H)

                                U.S.S. REDFIN (SS272)

                                Torpedo attack No.4
              No.1   | No.2   | No.3   | No.4
Tubos fired.  105S   | 106S   | 108 S  | 109S
Track angle   12½    | 13     | 13½    | 14
Gyro angle    6      | 6      | 6      | 6
Depth set     High   | High   | High   | High
Power         Miss   | Miss   | Hit    | Miss
Hit or Miss   No     | No     | No     | No
Erratic       23     | 23     | 23     | 23
Mark Torpedo  49659  | 49178  | 49756  | 49692
Serial No.    6-5    | 6-5    | 6-5    | 6-5
Mark Exploder 25341  | 21885  | 25676  | 17351
Serial No.    Contact| Contact| Contact| Contact
Actuation set Contact| Contact| Contact| Contact
Actuation actual
Mark warhead  16-1   | 16-1   | 16-1   | 16-1
Serial No.    17485  | 9819   | 17404  | 14187
Explosive     TPX    | TPX    | TPX    | TPX
Firing Interval 8 Sec.
Type Spread   Divergent
Sea conditions. Calm
Overhaul Activity U.S.S. ORION.
Remarks.

                                      -46-

— page 169 —
SS272/A16
CONFIDENTIAL
(H)

                                                                U.S.S. REDFIN(SS272)

                                                                Torpedo Attack No.5.
Tubes fired.                                    No. 6           No. 5           No. 4           No.3
Track angle.                                    120 P           121 F           121 P           123 F
Gyro angle.                                     009             358             358½            358½
Depth set.                                      4               4               4               4
Power.                                          High            High            High            High
Hit or Miss.                                    Miss            Miss            Miss            Miss
Erratic.                                        No              Yes             No              No
Mark Torpedo.                                   23              23              23              23
Serial No.                                      49789           49565           41564           41149
Mark Exploder.                                  6-5             6-5             6-5             6-5
Serial No.                                      65684           25762           17258           12513
Actuation Set                                   Contact         Contact         Contact         Contact
Actuation Actual                                -               -               -               -
Mark Warhead                                    16-1            16-1            16              16-1
Serial No.                                      17376           17379           2995            3797
Explosive.                                      TPX             TPX             TPX             TPX
Firing Interval.                                8 Sec.
Type Spread.                                    Divergent.
Sea conditions.                                 Calm.
Overhaul Activity. U.S.S. ORION.
Remarks.

                                                                -47-

— page 170 —
S3272/A16
CONFIDENTIAL

U.S.S. REDFIN (SS272)

(H)                                 Torpedo Attack No.6
                                    No.1      No. 2     No.3      No.4
Tubes fired.
Track angle.                        084 S     086 S     085 S     087 S
Gyro angle.                         356½      000       003½      358
Depth set.                          5         5         5         5
Power                               high      high      high      high
Hit or Miss                         miss      miss      possible  hit
                                                        hit
Erratic                             no        no        no        no
Mark Torpedo                        23        23        23        23
Serial No.                          41407     33889     49699     49961
Mark Exploder.                      6-5       6-5       6-5       6-5
Serial No.                          17263     14023     25746     25766
Actuation Set.                      Contact   Contact   Contact   Contact
Actuation manual.                   -         -         Contact   Contact
Mark Warhead.                       16-1      16-1      16-1      16-1
Serial No.                          1606      9669      17397     17351
Explosive.                          TFX       TFX       TFX       TFX
Firing Interval. 3 Sec.
Type spread.                        Divergent.
Sea conditions.                     Calm
Overhaul activity.                  U.S.S. ORION and NavStaSubBase, Navy 245.
Remarks.

-48-

— page 171 —
SS272/A16
CONFIDENTIAL

U.S.S. REDFIN(SS272)

(I) MINES

No mines or mining activity were observed.

(J) ANTI-SUBMARINE MEASURES AND EVASION TACTICS

No unusual anti-Submarine activities were
encountered.

(K) MAJOR DEFECTS AND DAMAGE

Talk-Back System:

Once again the bridge talk-back system was of
little use throughout the entire patrol. There were
two main sources of trouble:-
(1) Continual failure of the Loach Contactors.
(2) Lack of spares for the moving elements of
the bridge speakers.
By keeping a careful check on the former we were
able to partly correct the trouble thus induced.
But because of a complete lack of spares for the
speakers we were unable to keep them in any sort
of efficient operating condition.
It is suggested that if we are not provided
with an entirely new Talk-Back System that we at
least be provided with enough spares for the
present one.

MAIN ENGINES

On the evening of 26 August it became impossible
to fully open No. 2 main engine outside exhaust
valve. Men were sent on deck to inspect the valve.
The valve inspection cover was removed and several
short pieces of box, or crate wood, were found jammed
underneath the valve. This wood must have floated
up into the valve while submerged. The only possi-
ble source of this wood was the muffler. It is
quite possible that the wood had been used to hold
the inside baffle in place while welding and had
not been removed after completion of the muffler.
This muffler had been renewed during the last re-
fit. Although this casualty did not cause any
flooding it could have been quite serious had
some gotten in as far as the inside valve. A
careful check of all new mufflers should be made
to insure that no material is in them that might
jam an exhaust valve.

-49-

— page 172 —
SS272/A16
CONFIDENTIAL
U.S.S. REDFIN (SS272)

MAJOR DEFECTS AND DAMAGE (CON'T)

Torpedo Performance And Casualties:

Torpedo No. 41095 Mk 23 received from Torpedo Station,
Darwin on 5 September 1944. On September 12th torpedo
tubes were flooded at periscope depth for approximately
20 minutes. Upon inspection this torpedo was found to
have a completely flooded afterbody. All the prescribed
routines for flooded torpedoes were taken. The torpedo
was then loaded back into the tube and tested at 20 lbs.
per square inch for 10 minutes. The afterbody again
flooded. The afterbody was then removed from the air
flask, the gyro housing removed, the starting gear re-
moved and a most thorough check made for the leak. No
leaks, or possible leaks were found, although it was
possible to take up some on the turbino bulkhead. All
gaskets, except for turbino bulkhead, were renewed and
the torpedo was reassembled and tested in the tube
for a period of 20 minutes at about 10 lbs. per square
inch. Afterbody did not leak. On September 25th the
tubes were flooded at periscope depth for approximately
30 minutes. Upon inspection this torpedo was found to
have a completely flooded afterbody. All the prescribed
routines for flooded torpedoes were taken and the torpedo
was placed in a reload position. Every effort was made
to preserve the machinery from corrosion. The gyro
was thoroughly soaked in alcohol, blown down and oiled.
There is a fairly deep gouged place on the tail, near
the tail bulkhead (not caused during loading on this
vessel) which may have loosened the tail bulkhead seal
and caused a leak.

Torpedo No. 49789 Mk 23 received from U.S.S. Orion
on 5 August 1944. On September 12th torpedo tubes
were flooded at periscope depth for approximately 30
minutes. Upon inspection this torpedo was found to
have a completely flooded afterbody. All the prescribed
routines for flooded torpedoes were taken and both
handhole gaskets gave evidence of having admitted water,
even after the precautionary inspection given then upon
receiving the torpedo aboard. The handhole gaskets
were renewed and the torpedo was placed back in the
tube and tested for leakage. Did not leak. This torpedo
was fired and ran hot, straight and normal scor-
ing a hit on an enemy ship.

-50-

— page 173 —
U.S.S. REDFIN(SS272)

SS272/416
CONFIDENTIAL

MAJOR DEFECTS AND DAMAGE (CON'T)

Torpedo Performance and Casualties (con't).

Torpedo No. 49756 Mk 23 received from U.S.S. Orion.
The packing gland on the gyro socket of this torpedo was
found to be too tight to permit the operation of the
angle setting mechanism. This was remedied by loosening
packing gland.

Torpedo No. 49565 Mk.23 received from U.S.S. Ori.
This torpedo was fired on September 21st, depth setting
4 ft. Upon firing it immediately took a turn to the left
and continued on a radical course until nearly abeam of the
U.S.S. Redfin. It was "porpoiseing" and soon completely
out of control. It then made a turn to the right and
headed back in the general direction of the other torpedoes
that ran straight. This torpedo had previously been in a
flooded tube at periscope depth without leaking, and since
this was a surface attack there is no reason to believe
that the erratic performance was caused by a flooded gyro.
It is believed that the shallow depth setting did not give
the torpedo time to settle down before it porpoised causing
the gyro to tumble.

(L) RADIO

The performance of all radio gear was excellent. No
serials were missed. All of our transmissions were cleared
with very little difficulty. In one instance when VIXO
asked for a repeat on several groups of our message, NPM
immediately broke in with the necessary groups. In this
way our actual time on the air was reduced by nearly fifty
percent.
While on life guard duty near Balikpapan continuous
enemy signals were heard on 4475 kcs, our primary frequency.
Those signals cannot be classified as jamming because they
consisted of one station were talking to another. But
the fact that the same stations were keying twenty-four
hours a day leads us to believe that his purpose is
not the form, was interference with our reception on that
frequency.

(M) RADAR

S.J. - Performance of the SJ Radar was excellent through-
out the entire patrol. The newly installed system of key-
ing proved a highly efficient means of communication and
identification.

-51-

— page 174 —
U.S. S. REDFIN(SS272)

SS272/A16
CONFIDENTIAL

(M) RADAR (CON'T)

The principal difficulties encountered are listed
below:
(1) Casualty: PPI pattern shifting centering al-
          though continuing to operate.
    Remedy: R44, a bleeder resistor in the power
          supply circuit was found to be open
          circuited. Replacement of this resistor
          restored normal operation.
(2) Casualty: Sweep jittered badly for sometime and
          then HV current dropped to 30 MA and
          equipment ceased to operate at all.
    Remedy: The screen grid dropping resistor R51
          of tube V(1)13 was found to be part-
          ially open circuited. When cold its
          resistance was the correct value of
          4700 ohms. When warmed up its re-
          sistance increased to 100,000 ohms.
          Replacement of this resistor restored
          normal operation.
(3) Casualty: HV current dropped to 30 MA and the
          transmitter ceased to operate.
    Remedy: Replacement of condenser C(1)22A
          which was found to be short-circuited
          restored normal operation.

S.D. RADAR

The SD Radar gave the best performance we have
yet obtained from this gear. When keyed 10 seconds out
of every minute, it detected planes at ranges from 8 to
30 miles. Toward the end of the patrol however, the
equipment became very unstable for the first few minutes
after each surfacing. This is probably due to the fact
that the masthead insulator does not dry off properly,
thus allowing the antenna to arc between conductors.
During this "drying out" period it is impossible to
apply more than half power without erratic pulsing.
Consequently it is doubtful if planes can be detected
at other than very close ranges. After two or three
minutes on the surface, operation is again normal.

(N) SOUND GEAR AND SOUND CONDITIONS

No unusual sound conditions were encountered
throughout the entire patrol. All sound gear operated
very well. Pinging was detected by the QB at ranges
well over 20,000 yards. Screws of the target of 25
September were heard by the JPI at 10,000 yards with
bearing accuracy of one degree. A QO ping range of
1700 yards on the same target checked the TDC generated
range within 100 yards. In this connection, the system
-52-

— page 175 —
U.S.S. REDFIN(SS272)
SS272/A16
CONFIDENTIAL

(N) SOUND GEAR AND SOUND CONDITIONS - (CON'T)

    of pinging with the QC and listening for the return
    echo on both the C and B receiver vol very effective.
    If the soundmen agree in the range there can be
    very little doubt that it is a solid contact.
    Considerable trouble was encountered with the
    sound regulator on the O.A. tone generator. It
    is still erratic and should be thoroughly checked
    during the refit period.

(O) DENSITY LAYERS

    Bathymographic cards will be turned into
    the Hydrographic Office.

-53-

— page 176 —
U.S.S. REDFIN (SS272)

S3272/A16
CONFIDENTIAL

(P) HEALTH, FOOD, AND HABITABILITY

The health of the crew was above average. There were
no serious illnesses and only two sick days.

The food was satisfactory. As usual a few fresh
frozen foods and plenty of fruit juices were
a welcome relief from the regular diet. The quality
of meat was above average but we still have not re-
conciled ourselves to Australian sausage.

The habitability was good. Ten officers and a crew
of 77 were carried. Due to a variety of passengers
including one Jap and two Malayans it is requested
that the boat be fumigated and the mattresses be
renovated.

(Q) PERSONNEL

(a) No. of men on board during patrol. | 75
(b) No. of men qualified at start of patrol. | 69
(c) No. of men qualified at end of patrol. | 69
(d) No. of unqualified men making first patrol. | 10
(e) No. of men advanced in rating. | 14.

The performance of duty of the Officers and Crew under
combat conditions was in keeping with the highest
traditions of the service. Lt(jg) R. A. Taylor, U.S.N.R.
and Ensign H. P. Hayes, U.S.N.R. were recommended for
qualification in submarines at the beginning of this
patrol. These two officers came to the Redfin in
March 1944 from the September 1943 class at the Sub-
marine School, and have made two patrols on board
prior to this patrol. They have made themselves
very valuable men to this ship. Their actions on
board ship speak well both for themselves and for
their training prior to reporting to the Redfin.

(R) MILES STEAMED - FUEL USED

| * Miles Steamed | Fuel Used.
Fremantle, to Barrier | 1818 | 22480
On station-First part | 5064 | 55364
Barrier to Darwin to Barrier | 722 | 10239
On station-Second part | 4052 | 40001
Barrier to Fremantle | 1560 | 25500
Total | 13,216 | 153,584

* Fit log miles used.

-54-

— page 177 —
U.S.S. REDFIN(SS272)

SS272/A16
CONFIDENTIAL

(S) DURATION

Fremantle to Barrier.                                7 days.
On station-First part.                               21 days.
Barrier to Darwin to Barrier                         5 days.
On station-Second part.                              21 days.
Barrier to Fremantle.                                6 days.
                                Total                60 days.

(T) FACTORS OF ENDURANCE REMAINING

Torpedoes           Fuel           Provisions     Personnel Factor

12                  44,000 gal.    20 days.       10 days.

(V) REMARKS

    (a) No enemy mine sweeping was noted.
    (b) Enemy traffic routes and focal points noted
were as follows:-

    Traffic running between Makassar City and Kendari runs
fairly well on a set schedule.
    Eastbound traffic passed through Saloier Strait between
Liukang Loc Island and Tg. Lassa at about noon, How time,
and heads north very close to the coast passing Tiro Bay
about 1330-1430 proceeding on north for an overnight
anchorage in the vicinity of Lat: 5-10 S., Long:120-20 E.
The following day it proceeds directly across Boni Gulf
approaching Tg. Lamulu from 270 T at about 1330 and
then turns southeast along coast passing between Lamulu
Reef and the Celebes.
    Westbound traffic arrives off Tiro Bay on a southerly
course about 0700 to 0800.
    A good patrol station is a point not more than two
miles 090 T. from Tg. Tiro. This point gives you a
chance of seeing traffic approaching from both north
and south. The approaching ships at this point are
extremely difficult to see because of the land background.
A better patrol station would be three miles 270 T. from
Tg. Lamulu. This point has the advantage of clearer
view of approaching ships without the land background.
Both patrol stations are very badly infested with native
fishing boats. It is a rare occasion when you have
less than six sailboats in sight at once.

-55-

— page 178 —
SS272/A16
CONFIDENTIAL
RADAR INTERFERENCE - SJA

U.S.S. REDFIN(SS272)

1. No Radar Jamming was experienced.

2. On 8 September at 1850(H) in position, Lat:5-35 S.,
Long: 120-35 E., strong interference appeared very suddenly
on the port quarter over a sector about 30 degrees in width,
bearing 205 T. The only other contact at the time was land
over a bearing 205-320 T. The interference was detected while
we were making fast sweeps with the PPI and showed up plainly
on both A and C scopes. The sweep was stopped and the antenna
trained to the bearing of the interference. Headphones were
plugged in and the transmitter key opened. Interference appeared
4 or 5 times momentarily as if a transmitter were being trained
rapidly. The interval between indications was rather long.
The interference was not picked up in the headphones. Although
it appeared to be our own type radar it never remained on the
screen for more than one second at a time so comparison was
difficult. It disappeared entirely after about two minutes
but reappeared half an hour later while we were making sweeps.
It remained for only a few seconds. Although receiver tuning
was varied between the two times the interference was picked
up, there was no noticeable difference in the appearance of
the interference.
S-K-E-T-C-H

A-SCOPE
[Diagram of vertical lines]
C-SCOPE
[Diagram of horizontal lines]

3. On 9 September at 2000(H) in position, Lat: 6-30 S.,
Long: 120-45 E., strong interference appeared at 105 T. There
were no other radar contacts at the time. Although headphones
were plugged in, no signal could be heard. The interference
faded in and out for a period of 10 minutes before finally
disappearing. Since the pattern was very similar to that of
our own SJ Radar, it was concluded the interference was pro-
bably from the U.S.S. Bonefish.
S-K-E-T-C-H
[Diagram of vertical lines]

4. On 14 September at 1243(H) in position, Lat:4-50 S.,
Long: 121-15 E., mild interference showed up for a few
seconds at a time bearing 140 T. There were no other contacts
at the time. However, a short while before we contacted this
interference we were forced to submerge by an unidentified
plane contact on the SD Radar. Except for the irregular
-56-

— page 179 —
U.S.S. REDFIN(SS272)

SS272/A16
CONFIDENTIAL

RADAR INTERFERENCE - SJA (Con't)

height the interference pattern was very similar to that
of our SJ Radar. It flashed into the A scope at two
minute intervals for a period of 16 minutes then dis-
appeared altogether. The pattern was not stationary on
the screen but swept slowly from left to right. It was
not picked up on the C scope.

S-K-E-T-C-H

5. On 24 September at 0650(H) in position, Lat:5-50 S.,
Long: 120-22 E., interference was picked up momentarily on
the A scope. There were no other unusual contacts at that
time. The interference flashed on and off at intervals
for a period of one minute. The swoop was stopped and an
attempt was made to obtain a bearing, but before further
investigation could be made we were forced to submerge
by a plane contact on the SD Radar. The only unusual
feature of the interference was the fact that the pips
were very far apart.

S-K-E-T-C-H

-57-

— page 180 —
FC5-18/A16-3/(c1)
Serial 0197
CONFIDENTIAL
FIRST ENDORSEMENT to
U.S.S. REDFIN (SS272)
Report of 4th War Patrol

SUBMARINE SQUADRON EIGHTEEN
Wx
Care of Fleet Post Office
San Francisco, California,
8 October 1944

From: The Commander Submarine Squadron EIGHTEEN.
To: The Commander in Chief, UNITED STATES FLEET.
Via: The Commander Submarines, SEVENTH FLEET.

Subject: U.S.S. REDFIN (SS272) - Report of Fourth War Patrol,
comment on.

1. During this patrol six contacts worthy of torpedoes
were encountered. Firing position could not be obtained in the case
of three contacts. Six attacks were made, three of which were on
one escorting destroyer. One attack was made on what later turned
out to be a small "Whale-Killer" boat.

Attacks 1, 2 and 3 - All three of these attacks were
made against a destroyer escorting a convoy of eight ships, in night
surface attacks. Four electric torpedoes were fired on the first
attack at 3200 yard range with good track angles. All torpedoes
missed. Shortly thereafter two more electric torpedoes were fired
but also missed. Misses were probably caused by the radical man-
euvers of the destroyer in patrolling his station because REDFIN re-
mained undetected. The commanding officer then attempted to attack
the convoy from a different sector but was detected by this same des-
troyer who opened fire at 3100 yards range frustrating the attack.
One torpedo was fired "Down-the-throat" which missed, but did app-
arently cause the destroyer to break off the pursuit and allowed the
REDFIN to escape on the surface. Further attacks on the convoy was
not attempted due to the shallow water in this area.

Attack No. 4 - This was a daylight submerged attack
against a medium tanker escorted by a small PC type boat. Four torp-
edoes fired at 2300 yards range, resulted in one timed hit. Results
were not observed due to counter action by the escort.

Attack No. 5 - A night surface attack against an un-
identified target which appeared fairly large based on the size of the
radar pip. Four torpedoes were fired. One ran erratic and the others
missed. After daylight the target was seen to be a "Whale-Killer"
boat, actually too small for torpedoes. Her heavy masts had given the
impression that she was a much larger ship at the time of the attack.

- 1 -

— page 181 —
FC5-18/A16-3/(01)
Serial 0197
CONFIDENTIAL

SUBMARINE SQUADRON EIGHTEEN
Wx
Care of Fleet Post Office
San Francisco, California,
8 October 1944

Subject: U.S.S. REDFIN (SS272) - Report of Fourth War Patrol,
comment on.

1. Attack No. 6 - Four torpedoes were fired at an unescorted,
loaded, medium tanker in a submerged attack at dusk, range 1600 yards 85°
track. One hit resulted. REDFIN surfaced a few minutes after the attack
to proceed to assigned life-guard station. At this time the bow of tanker
was under water and she was burning furiously all over.

2. In three separate gun attacks, a small sea-truck was prob-
ably damaged slightly; a fishing boat identified by one prisoner who was
picked up, as the NANKO MARU of 85 tons; and a 20 ton sail boat were sunk.
Two Malayan survivors were rescued from the latter.

3. The material condition of the REDFIN is very good. No
major casualties were experienced during the patrol. She will be given
a normal rofit by the U.S.S. EURYALE (AS22) and Submarine Division ONE
EIGHTY-TWO Relief Crew.

4. The health of the officers and crew is excellent and the
state of morale is high.

5. The Squadron Commander congratulates the commanding
officer, his officers and crew on the damage inflicted upon the enemy.

[HANDWRITTEN: J. H. B.]
[SIGNATURE: ELIOT H. BRYANT]
[HANDWRITTEN: Comdr. USN]

— page 182 —
FE24-71/A16-3
Serial 01167
C-O-N-F-I-D-E-N-T-I-A-L

UNITED STATES NAVY
12a/pr
[STAMP: RECEIVED S-O FILES]
[STAMP: Room 2055]
[STAMP: DATE 27 OCT 1944]
[HANDWRITTEN: 140469]
[HANDWRITTEN: 2nd Copy]
October 1944.

SECOND ENDORSEMENT to:
USS REDFIN Conf. Ltr.
A16 dated 4 October
1944. Report of Fourth
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. REDFIN (SS272) - Report of Fourth War
Patrol - Comment on.

1. REDFIN'S Fourth War Patrol was conducted in the
SOUTH CHINA SEA or the West Coast of BORNEO, followed by a short
patrol in the FLORES SEA after a reload at DARWIN.

2. Two hazardous Special Missions were successfully
and expeditiously accomplished, and Life Guard duties were
performed off BALIKPAPAN.

3. Six torpedo attacks were made, two of which were
successful, resulting in sinking one, and damaging another
medium tanker.

4. The Commanding Officer's remarks on the traffic
routes in the vicinity of SALEIER STRAIT should be helpful to
submarines patrolling that area.

5. The award of the Submarine Combat Insignia is
authorized for this patrol.

6. The Force Commander congratulates REDFIN'S
Commanding Officer, Officers, and Crew, on this aggressive and
well conducted patrol, in which three special assignments were
executed, and the following damage inflicted on the enemy:

SUNK
1 - AO (Medium - EU) 5,000 Tons (Attack No. 6)
2 - MIS 100 Tons (Gun Attacks
No. 2 and 3 )
[HANDWRITTEN: 25] Total 5,100 Tons

[STAMP: Office of the Chief of Naval Operations
FLEET MAINTENANCE
28 OCT 1944
RECEIVED
NAVY DEPARTMENT]
- 1 -

— page 183 —
F224-71/A16-3
Serial 01187
C-O-N-F-I-D-E-N-T-I-A-L

UNITED STATES NAVY
12a/pr
15 October 1944.

SECOND ENDORSEMENT to:
USS REDFIN (SS272) Conf. Ltr.
A16 dated 4 October
1944. Report of Fourth
War Patrol.

Subject: U.S.S. REDFIN (SS272) - Report of Fourth War
Patrol - Comment on.

— page 184 —
A16-3(P-S-4/whr)
Serial 02726
CONFIDENTIAL
[STAMP: 28OCT1944]

THIRD ENDORSEMENT to:
CO, U.S.S. REDFIN (SS272)
Conf. Ltr. file A16 of
4 October 1944.

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

Subject: U.S.S. REDFIN (SS272) - Report of Fourth War
Patrol.

1. Forwarded.

J. H. LONG
By Direction

11 0003

— page 185 —
U.S.S. REDFIN (SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 051

7 January 1945.

[STRIKE-THROUGH: CONFIDENTIAL]
DECLASSIFIED

From: The Commanding Officer, U.S.S. REDFIN (SS272).
To : The Commander-in-Chief, United States Fleet.
Via : Official Channels.

Subject: U.S.S. REDFIN (SS272), Report of War Patrol
         Number FIVE.

Enclosure: (A) Subject Report.

         1. Enclosure (A), covering the 5th war patrol of
         this vessel conducted in Central part of South China Sea
         just north of Dangerous Ground during the period 26 October
         1944 to 18 November 1944, and vicinity of Palawan Passage
         including North and South ends of passage during the period
         18 November 1944 to 7 January 1945, is forwarded herewith.

[SIGNATURE: M. H. Austin]
M. H. AUSTIN.

[STAMP: DECLASSIFIED ART. 0445, OPNAVINST 5510.1C]
BY [HANDWRITTEN: OP-09B2C] DATE [HANDWRITTEN: 6/4/73]

[STAMP: DECLASSIFIED]

[HANDWRITTEN: FILMED]
[HANDWRITTEN: 103529]

— page 186 —
U.S.S. REDFIN(SS272)
Fleet Post Master, San
Francisco, Calif.

SS272/A16
Serial 051

CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol
number 5.

— page 187 —
SS272/A16
Serial 051
CONFIDENTIAL

U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

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U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 051

CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.
REDFIN (SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 051

CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

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Serial 051

U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

— page 193 —
U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 051

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Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

— page 194 —
U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 051

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Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

8 November 1944 (con't)

All torpedoes of the first salvo missed ahead except
two which ran erratic and passed astern. No.3 and
either No.5 or No.6. were the erratic torpedoes. All
three of the above were heard to hit the shutters.
Had No.3 and No.6 been the erratic torpedoes and the
speed of the target been over estimated the misses
can be accounted for.
The spread used was as follows:

No.1 1 degree left.
No.2 1 degree right.
No.3 3 degrees right.
No.4 3 degrees left.
No.5 4 degrees left.
No.6 4 degrees right.

The second salvo was Mk.18 torpedoes and it is not
known on which side they missed.
The approach was undetected, the set up checked all
the way in, and the angles on the bow agreed with the
visual estimate. The enemy evidently thought
the attack came from his starboard for all shelling
and depth charging was done to starboard.
2035 Parallel target group, started radar tracking again.
Noted Barbero's interference on SJ Radar.
2057 Informed Barbero of our misses.
2108 Barbero made radar contact.
2129 Targets had separated into two groups. The large tankor
was by herself out about 5 miles ahead of the second
tanker. Two escorts were with the second tanker and
one was about halfway between the groups.
2151 Commenced firing 6 torpedoes at large tanker. Torpedo
run 2200 yards.
2152 Turned away to open out as escort was closing rapidly
although he did not have contact on us.
2153 Observed and heard one hit just aft of bridge.
2153-10 Observed and heard one hit about even with the stack
which was aft.
2155 Target fired about six shells at Redfin missing by a
good hundred yards. His gun crew was well trained.
The tanker was on fire from the bridge to the stern
with periodic explosions. The escort did not give
chase. He evidently thought we were submerged for he
threw over about a dozen depth charges and remained in
the immediate vicinity of the target.

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U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

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Subject:

U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

Report of U.S.S. REDFIN(SS272) War Patrol No.5.

10 November 1944 (16th day)

     Patrolling line between 13-50 N. and 14-15 N. about
     30 miles west of Cabra Island.
1204 Aircraft contact on SD Radar. Not sighted.
     Submerged.
     Aircraft Contact No.6.
1245 Surfaced and continued patrol.
1814 Noted radar interference on SJ Radar. Presumed this to
     be Haddo near Cape Calavite. Unable to make satisfactory
     recognition signals.
     Noon Position: Lat: 14-03 N.; Long: 119-35 E.

11 November 1944 (17th day)

0541 Submerged 7 miles 310 T. from Calavite Light. Heading
     in to patrol a line 4,000 yards off beach staying north
     of the Light.
0630 Sighted small motor fishing launch, about 60 feet long.
     He had two small row boats hanging from davits on each
     side and a Jap merchant flag painted on his deck house.
     He did not appear to be armed. Decided against battle
     because of nearness to land and frequent air
     patrols.
     Ship Contact No.11.
0810 Sighted Jake-type plane flying low.
     Aircraft Contact No.7.
0913 Sighted Jake-type plane flying low.
     Aircraft Contact No.8.
1200 Sighted two-engine bomber - probably - Betty.
     Aircraft Contact No.9.
1525 Sighted two-engine bomber - probably a Betty.
     Aircraft Contact No.10.
     This spot seems well patrolled by aircraft. I will spend
     tomorrow on the surface northwest of Cabra Island Light.
1809 Surfaced and headed out for patrol station.
1814 Noted radar interference on SJ Radar coming from the
     south. Exchanged calls with U.S.S. Haddo and at his
     request headed towards him for rendezvous. I directed
     him to lay to and I would come close aboard.
2050 Stopped close aboard Haddo and held conversation concern-
     ing area.
2051 Parted company with Haddo heading for patrol station
     northwest of Cabra Island Light.
2306 Arrived on station and commenced patrolling a North-South
     line west of Cabra Island Light between Lats: 14-15 N. and
     13-50 N. at Long: 119-46 E.
     Noon Position: Lat: 13-32 N.; Long: 120-29 E.

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Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

             12 November 1944 (18th day)

0210 Picked up indications of enemy radar on APR (150 mos).
     Radar Detection No.8. (See Radar Section).
0241 Sighted what appeared to be the lights of a correctly
     lighted hospital ship on a northerly course. Did not
     close to investigate.
     Ship Contact No.12.
0400 Opened out to the west 20 miles in order to make surface
     patrol during daylight.
0611 Aircraft contact on SD Radar - range 8 miles.
     Submerged.
     I suspect he is making a sweep ahead of a convoy.
     Aircraft Contact No.11.
0704 Surfaced and continued patrol.
0734 Sighted two-engine bomber - probably a Betty, on
     course 000 T., bearing 090 T. from Redfin.
     Aircraft Contact No.12.
     Submerged.
     The Quartermaster on the periscope thought he sighted
     smoke on bearing 070 T. just prior to our diving for
     the plane contact.
0903 Sighted smoke by periscope - bearing 045 T.
     Ship Contact No.13.
     This appeared to be at least two ships. Since this
     bearing was so near zero we were too far off the track
     of any probable course for a submerged attack.
0930 Surfaced and started end around run. The bearing change
     indicated that the targets were on a northwesterly
     course, therefore directed course to make sight contact.
     At this point being too engrossed in trying to make
     sight contact on the two smokers I neglected to make
     the usual all around looks through the periscope. I
     was quite surprised when the Officer of the Deck informed
     me that he thought the ships to the left were the
     closest.
1035 Sighted second group of ships bearing 355 T. - range
     about 20,000 yards on a westerly course. This contact
     turned out to be one large enginos-aft, Able King; two
     medium Able Kings; one two-stack destroyer, and two
     subchasers.
     Ship Contact No.14.
     I was so surprised by this close contact that I quickly
     lowered the periscope and turned away to prevent being
     sighted. I did not realize at this time that I had two
     different convoys in sight. I thought they were separate
     groups of the same convoy.

-12-
U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

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U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 051

CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

12 November 1944 (con't)

1058 Resumed end-around-run. All day and up until mid-
     night I attempted to contact Haddox by radio, but
     met with no success. Each time after failing to get
     an answer to our call-up we broadcasted blind in
     hopes some submarine in the vicinity would come in
     to help. We had only 8 torpedoes.
1143 Sighted Jake-type plane in vicinity of convoy. He
     looked very much like he was coming directly for
     Redfin.
     Aircraft Contact No.13.
     Submerged.
     Since we were still too far off what I thought was
     the track for a submerged attack I paralleled the
     convoy's course with the idea of letting them go by
     and try again to make an end-around-run. My assumption
     that I was too far off the track proved correct, for
     at 1245 the convoy passed at closest range of about
     12,000 yards. However, if I had attempted to open the
     range by taking the normal departure course I would
     have run smack into a very large fast transport.
1245 Convoy passed at range of 10,000 to 12,000 yards.
     Identified the one large ship as a large engines-aft
     Able-King and one of the escorts as a two-stack des-
     troyer. The Jake was patrolling over the convoy.
     There were two small unidentified Able-Kings and
     two subchasers.
1258 Sighted large transport about 12,000 tons LKFKMK.
     Angle on the bow 90 starboard - range 10,000 yards -
     bearing 060 T. Attempted but failed to close target.
     No escorts were seen with this ship. The Redfin was
     at this time between the convoy and the transport.
     My best estimate is that the two groups were about
     10 miles apart. I think the transport was making
     about 15 or 16 knots (95 RPM).
     Ship Contact No.14.
1456 Surfaced with only the convoy in sight through the
     periscope. Started end-around-run. His course
     indicated that he was making for Palawan Passage.
     The air cover was not sighted again. This leads me
     to believe that air cover is not too strong after
     1530 or 1600.

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U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 051

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Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

— page 205 —
U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 051

CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

14 November 1944 (con't)

This contact was made by the periscope watch taking
a sweep every 10 minutes.
0846 Slowed to permit Bluegill to tune her SJ Radar.
0909 Continued course and speed heading for Sibutu Passage.
1223 Radar contact on IFF (friendly plane) at 19 miles.
Aircraft Contact No.15.
Cut in ABK and noted that it was being triggered.
2049 Cleared Pearl Bank.
2326 Entered Sibutu Strait.
2335 Lookout reported a very definite green flare on
Bong Island. He seemed quite sure that he had seen
the flare rise to about 400 feet and then descend.
No one else saw the flare and nothing further happened
to indicate that Redfin had been sighted. I am not
at all sure that it was an actual flare.
Noon Position: Lat: 7-59 N; Long: 120-01 E.

15 November 1944 (21st day)

0023 Cleared Sibutu Passage - no contacts.
0024 Noted radar interference on SJ Radar caused by
another SJ Radar. Unable to exchange recognition
signals.
Ship Contact No.17.
0723 Sighted low flying plane on starboard beam. Lookout
said it was close and very large. It probably was a
friendly plane.
Submerged.
Aircraft Contact No.16.
0801 Surfaced.
0923 IFF indication of friendly planes at 22 miles.
Aircraft Contact No.17.
ABK indicated that planes knew we were friendly.
0953 Sighted six P-38's directly overhead at range 2 miles.
1007 Sighted low flying PBY on starboard beam on a parallel
course.
Aircraft Contact No.18.
1213 IFF indication of friendly plane at 23 miles.
Aircraft Contact No.19.
Plane not sighted.
1418 SD contact on plane at 20 miles (friendly)
Aircraft Contact No.20.
Plane not sighted.
1623 IFF indication of a friendly plane at 40 miles.
Aircraft Contact No.21.

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U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 051
CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

21 November 1944 (27th day)

Spent the entire day training. Two Australian Corvettes
were furnished as targets.
Noon Position: Mios Woendi.

22 November 1944 (28th day)

0700 Departed Mios Woendi in company with HMAS Strahan
enroute Area A-4 to conduct coordinated search and
attack with Barbero and Haddo as directed by Commanding
Officer Barbero.
1346 Made trim dive.
2401 Surfaced.
Noon Position: Lat: 00-34 S.; Long: 136-27 E.

23 November 1944 (29th day)

Enroute area in company with HMAS Strahan.
0100 Released HMAS Strahan with orders to return to Mios Woendi.
0628 Made trim dive.
0640 Surfaced.
During day sighted several friendly planes.
Noon Position: Lat: 1-50 N.; Long: 132-37 E.

24 November 1944 (30th day)

0358 Made radar contact on ship bearing 205 T. - range
12,600 yards.
Ship Contact No.19.
Was expecting friendly ship at this time.
0430 Exchanged recognition signals by light with HMAS Kiama.
He inquired if we had seen U.S.S. Blackfin.
0513 Noted radar interference ahead - probably Blackfin.
Notified Kiama to follow and that we would assist him
in rendezvousing with Blackfin.
0533 Exchanged recognition signals by SJ Radar with Blackfin.
Ship Contact No.20.
0605 Sighted Blackfin and informed him by light the location
of HMAS Kiama.
During the day sighted many friendly planes.
1149 Aircraft contact on SD Radar at 6 miles. No indications
that he was friendly.
Aircraft Contact No.22.
Submerged.
This probably was a friendly plane whose IFF was not
operating.

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U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 051
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Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

24 November 1944 (con't)

1208 Surfaced.
1528 Aircraft contact on SD Radar at 25 miles. No
        friendly indication.
        Aircraft Contact No.23.
1534 Submerged when range had closed to 6 miles with still
        no friendly indication.
1550 Surfaced.
1622 Sunset.
1623 Aircraft contact on SD Radar at 18 miles. The range
        closed to about 15 miles and then opened out. No
        friendly indication.
        Aircraft Contact No.24.
        Picked up indication of another radar (325 mcs).
        Radar Detection No.11. (See Radar Section).
1830 Entered Siao Pass.
1910 Cleared Siao Pass - no contacts - headed for Sibutu
        Passage.
        Noon Position: Lat: 2-41 N.; Long: 127-15 E.

25 November 1944 (31st day)

0233 Picked up indications of enemy radar on APR at 150 mcs.
        Radar Detection No.12. (See Radar Section).
0244 Enemy radar faded out.
1419 Picked up indication of another radar on APR at 200 mcs.
        This was only twenty minutes after a friendly plane
        had passed over.
        Radar Detection No.13. (See Radar Section).
1445 Lost indication of other radar.
1838 Entered Sibutu Passage.
1949 Avoided two sailboats.
2030 Noted radar interference caused by another SJ Radar.
2100 Cleared Sibutu Passage.
2101 Sighted submarine bearing 012 T. - range 8,800 yards.
        This submarine was sighted prior to actual radar
        contact because the radar was being used for signalling.
        Ship Contact No.21.
        Probably U.S.S. Besugo.
2102 Exchanged recognition signals with a friendly submarine.
        Noon Position: Lat: 3-54 N.; Long: 121-11 E.

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c/o Fleet Post Office,
San Francisco, Calif.

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— page 211 —
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U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

29 November 1944 (con't)

Sent word to Barbero that we could not attain attack
position and were maintaining station.
1249 Submerged.
1458 Surfaced.
1500 Received word to rendezvous with Barbero at 0200 at
     Lat: 13-20 N. Long: 118-40 E.
1823 Headed for rendezvous.
2217 Noted SJ Radar interference to the northward.
     Noon Position: Lat: 12-16.5 N.; Long: 119-14.5 E.

30 November 1944 (36th day)

0006 Exchanged recognition signals with Barbero by SJ Radar.
0020 Made simultaneous radar and sight contact on Barbero
     bearing 290 T., range 12,000 yards. The visibility was
     excellent.
0038 Closed to 4,000 yards and held conversation by VHF.
     Received instructions to patrol south of Lat: 13-40 N.
     and west of Long: 119-E.
0050 Headed south to patrol in the vicinity of Lat: 12-20 N.
     Long: 118-30 E.
0810 Arrived on station.
1322 SD contact of aircraft at 10 miles - closing slowly.
     Aircraft Contact No.33.
     Submerged.
1522 Surfaced.
     During the day Haddo received instructions to depart
     for special patrol station.
1904 Received instructions to rendezvous with Barbero at
     Lat: 11-10 N. Long: 118-30 E. at 0200.
     Headed for rendezvous at slow speed.
2036 Noted SJ interference astern - presumed this to be
     Haddo or Barbero.
2100 Received instructions breaking up attack group each
     boat being assigned special patrol stations. Redfin
     to patrol Northern Palawan Passage.
2103 Submerged to wash out No. 4 M.B.T.
2110 Surfaced.
     Noon Position: Lat: 12-32 N.; Long: 118-29 E.

1 December 1944 (37th day)

0100 Intercepted message from Barbero in which she stated
     that she did not have chart of Dangerous Ground. We
     have two sets and will pass her one set.

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                                                                U.S.S. REDFIN(SS272)
                                                                c/o Fleet Post Office,
                                                                San Francisco, Calif.

CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

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U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

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Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

11 December 1944 (con't)

2212 Hit pit log swordarm on submerged object. We were
     able to adjust for satisfactory operation; however,
     swordarm will not house. The coasts of Borneo are
     always bad for debris even as far out as three
     hundred miles.
     Noon Position: Lat: 7-05 N.;Long: 115-55 E.

12 December 1944 (48th day)

1059 Aircraft contact on SD at range 10 miles - closing
     quickly to 8 miles. Plane not sighted.
     Aircraft Contact No.55.
1157 Submerged.
1827 Surfaced.
     Converted No. 3 F.B.T. to use as a ballast tank.
     Time required - 30 minutes. Most of the time used
     in conversion was consumed in removing and replacing
     the screen. This time could be materially reduced
     if the screen were fitted so that the deck locker door
     opened directly into the screened compartment.
1912 Submerged to wash out No. 3 M.B.T.
1939 Surfaced.
     Noon Position: Lat: 8-10 N.;Long: 115-50 E.

13 December 1944 (49th day)

0624 Made trim dive.
0633 Surfaced.
1402 Submerged to repair switch for IC Motor Generator.
     This repair necessitated cutting off all IC Power.
     See Derangement Section.
1428 Surfaced.
     Noon Position: Lat: 7-49 N.;Long:115-46 E.

14 December 1944 (50th day)

0619 Made trim dive.
0628 Surfaced.
0618 Aircraft contact on SD at 24 miles.
     Aircraft Contact No.56.
     Plane not sighted.
0823 Lost aircraft contact - least range 23 miles.
1150 Aircraft contact on SD at 20 miles.
     Aircraft Contact No.57.

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U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

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U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

21 December 1944 (57th day)

0602 Made trim dive.
0614 Surfaced.
0749 SD contact on two planes at 14 and 28 miles.
     Aircraft Contact No.62.
0800 Lost aircraft contact with range opening.
     Closest range obtained was 9 miles.
0936 SD contact on aircraft at 13 miles.
     Aircraft Contact No.63.
     Range closed to about 11 miles and then opened.
0944 Lost aircraft contact.
0945 Cleared Palawan Passage and directed course to stay
     west of Long:118. East.
1117 Aircraft contact on SD at range 32 miles.
     Aircraft Contact No.64.
     Did not appear to be closing.
1122 Lost aircraft contact.
1149 Sighted large low flying plane - bearing 300 T. on
     an easterly course.
     Aircraft Contact No.65.
     Submerged.
1153 Through periscope plane appeared to be a B-24.
1205 Surfaced with plane still in sight heading towards
     APO Passage.
1535 SD contact on aircraft at 18 miles - closing slowly.
     Aircraft Contact No.66.
1538 Sighted plane bearing 142 T. on an easterly course.
     Identified plane as a B-24.
1543 Lost sight and radar contact with plane.
     Closest range 15 miles.
2031 Contact on SJ bearing 135 T. - range 14,000 yards
     and closing very fast.
2033 Set watch on SD and obtained an aircraft contact at
     2 miles. Checked APR for usual Jap radar frequencies,
     with no indications.
     Aircraft Contact No. 67.
     Submerged.
2108 Surfaced and maintained a SD watch until moonset.
     Noon Position: Lat: 11-12 N Long: 118-06.5 E.

22 December 1944 (58th day)

0743 SD contact on aircraft at range 24 miles and closing
     steadily.
     Aircraft Contact No.68.

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c/o Fleet Post Office,
San Francisco, Calif.

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Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

22 December 1944 (58th day)

0754 Sighted B-24 at range 7 miles on course 300 T.,
     bearing 045 T.
0805 Lost contact at range 25 miles.
0829 Passed west of Scarborough Shoal and headed north.
1204 SD contact on aircraft at range 8 miles - closing rapidly.
     Aircraft Contact No.69.
     Submerged.
1232 Surfaced.
1252 SD contact on aircraft at range 19 miles -
     closing slowly.
     Aircraft Contact No.70.
1300 Sighted plane bearing 070 T. - range 12 miles -
     on course 130 T. Appeared to be a B-24.
1304 Lost plane contact.
2002 Noted SJ interference from another SJ Radar.
2141 Transmitted first message to ComTaskForce 717.
2200 Exchanged recognition signals and calls with
     U.S.S. Lapon.
     Ship Contact No.23.
     Noon Position: Lat: 15-50 N. Long: 117-34 E.

23 December 1944 (59th day)

0927 Sighted by periscope two unidentified single stack
     destroyers on undetermined course at high speed,
     bearing 001 T., range about 16,000 yards. The foggy
     weather and rough seas account for this late sighting.
0932 Changed course to 175 T. to open range and track at
     full speed.
0940 Bearing began to draw left at a good rate and range
     increased rapidly.
0943 Changed course to 220 T.
0945 Unable to maintain sight contact because of changing
     visibility.
0956 Changed course to 260 T. to close track and get good
     look at target group.
0958 Submerged and ran at 2/3 speed. I thought I was close
     enough to the track to possibly get in an attack or
     to get a good look at the target group.
1040 At depth 30 feet sighted target group bearing 280 T.,
     range about 20,000 yards. Their course must have been
     225 T or greater and about 17 to 20 knots. No other
     ships were with this group.

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                                        23 December 1944 (con't)

          Ship Contact No.24.
1045 Lost contact.
1055 Surfaced and continued on course.
1137 SD contact on aircraft at range 24 miles.
          The range did not change.
          Aircraft Contact No.71.
1140 Lost plane contact.
1359 SD contact on aircraft at range 25 miles.
          Aircraft Contact No.72.
1412 Lost plane contact at 30 miles. Lost range
          23 miles.
          Noon Position: Lat: 19-42 N. Long: 118-24 E.

                                        24 December 1944 (60th day)

0429 Entered Balintang Channel passing north of Balintang
          Island.
0605 Cleared Balintang Channel just at sunrise.
          No contacts.
          If there are spotters on Balintang Island they could
          have seen us easily; however, no counter measures
          were experienced.
1002 SD contact on aircraft at range 20 miles -
          closing steadily.
          Aircraft Contact No.73.
1005 Submerged to avoid detection. Range 13 miles and
          plane still not sighted. Unable to sight plane
          through periscope. Sky was completely overcast.
1031 Surfaced.
1550 Noted very weak interference from another SJ Radar -
          bearing about southeast. Probably a friendly submarine.
          This interference was noted intermittently until it was
          lost at 2000. Tried to attract his attention in order
          to exchange recognition signals but the signal strength
          was too weak.
          Noon Position: Lat: 20-26.5 N. Long:126-23 E.

                                        25 December 1944 (61st day)

0000 Changed zone time to zone (-9). Hereafter zone time
          used will be indicated in the margin.

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Subject:

U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

7 January 1945.

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

29 December 1944 (65th day)
0700 Rendezvoused with U.S.S. Pipefish and
     DE Escort.
1426 Moored to U.S.S. FULTON at Tanapag Harbor, Saipan.

     Fueled ship, unloaded torpedoes and made
     minor repairs.

30 December 1944 (66th day)
1447 Departed Saipan in company with Pipefish and
     Escort enroute Pearl Harbor.
2017 Parted company with Pipefish and Escort.

31 December 1944 (67th day)
     to
     6 January 1945 (74th day)

     Enroute Saipan to Pearl Harbor.

     Repeated day of 4 January 1945.

     Enroute sighted several friendly planes
     and submarines.

7 January 1945 (75th day)
0505 Contacted Escort.
0925 Arrived Pearl Harbor.

-35-

— page 225 —
SS272/A16
Serial 051
CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

(C) WEATHER
    The weather in the South China Sea during the
    months of November and December was typical
    of this time of the year. There was consider-
    able cloudy weather making sights infrequent.

(D) TIDAL INFORMATION
    Tides and currents encountered agreed with
    those predicted in the Coast Pilot.

(E) NAVIGATIONAL AIDS
    No Lighted Navigational Aids were sighted.

U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

-36-

— page 226 —
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Serial 051

U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

CONFIDENTIAL
Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

(F) SHIP CONTACTS

No:Time : Lat. : Type :Initial:Est. :How :
:Date : Long.: :range :Course:Con-: Remarks.
: : : :(yds) :Speed :tacted

— page 227 —
U.S.S. FEDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 051

CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

(F) SHIP CONTACTS - (Con't)
No:Time : Lat : Type :Initial:Est.: How:
:Date : Long : :range :Course:Con- : Remarks.
: : : :(yds) :Speed:tacted
12:0241 : 14-05N:Hospital :UNK. :North:SN :Fully lighted.
:12.Nov:119-46E:Ship. : : : : :Did not investi-
: : : : : : :gate.
13:0734 : 14-03N:2-AK's - :30000 :310 T :SD :Did not engage
:12.Nov:119-27E:Escorts(U/I): : :10 kts: :[UNCLEAR: due to poor visibility]
: : : : : : :
14:1035 : 14-00N:1-Large AK :25000 :270 T :P :One (1) hit in
:12-Nov:119-07E:(MMF)-9000 Tons- : :10 kts: :large AK
: : :EU;2-Med.AK's(U/I);: : :
: : :1-2 Stack DD; : : :
: : :2 Escorts(U/I) : : :
15:1300 : 13-56N:1-Large AP :12000 :240 T :P :20000 yds.off
:12-Nov:119-05E:MRFKM : : :15 kts: :port beam of con-
: : : : : : :voy(Contact No.14
: : : : : : :proceeding indep.
16:0808 : 09-00N:SS U.S.S. :12000 :000 T :SD :Ident.as Bluegill
:13-Nov:120-12E:Bluegill. : : :14 kts: :by recog.sig.sent
: : : : : : :over SJ.
17:0024 : 04-43N:SS U.S. :UNK. :UNK. :R :SJ interference.
:15-Nov:119-50E: : : : : :Could not secure
: : : : : : :recog.sig.Pro-
: : : : : : :bably Flounder or
: : : : : : :Bashaw.
18:0040 : 02-31N:SS U.S.S. :UNK. :UNK. :R :SJ interference.
:16-Nov:125-16E:Gar. : : : : :Could not secure
: : : : : : :recog.sig.Pro-
: : : : : : :bably U.S.S.Gar.
19:0458 : 02-54N:HMAS :12600 :285 T :R :Ident.as HMAS
:24-Nov:128-55E:Kiama : : :10 kts: :Kiama by recog.
: : : : : : :sig.
20:0615 : 02-28N:SS U.S.S. :10000 :075 T :R :Ident.as Blackfin
:24-Nov:128-17E:Blackfin. : : :14 kts: :by recog.sig.
: : : : : : :sent over SJ.

-38

— page 228 —
U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 051

CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

(F) SHIP CONTACTS - (Con't)
No:Time :Lat :Type :Initial:Est :How:
:Date :Long : :range. :Course:Cont-
: : : :(yds) :Speed.:acted. Remarks.

21:2101 : 05-00N:SS U.S.S. :8300 :180 T.:R :Ident.as Besugo by
:25-Nov:119-35E:Besugo. : :17 kts: :recog.sig.sent over
: : : : : : :SJ.

22:1254 :12-27.5N:No.1 Class : :015 T.:SD :Avoided.
:28.Nov:119-21.5:AML-6 :20000 :16 kts: :
: : :E: : : : :

23:2200 :17-46N :SS U.S.S.:UNK. :UNK. :R :Radar interference
:22.Dec:117-47E :Lapon. : : : :only.Ident.as Lapon
: : : : : : :by recog.sig.sent
: : : : : : :over SJ.

24:0927 :19-41N :2-DD's :14000 :240 T.:R :Unable to close
:23.Dec:118-23E :UN-1 : : : :
: : :Class : :16 kts: :
: : : : : : :

25:1921 : 20-00N :SS U.S.S. : : : :R :Radar interference
:26.Dec:135-30E :Kraken :UNK. :UNK. : :only.Ident. as
: : : : : : :Kraken by recog.
: : : : : : :sig.sent over SJ.

-39

— page 230 —
SS272/A16
Serial 051

U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

(G) AIRCRAFT CONTACTS - (Con't)
Contact No. : 7 : 8 : 9 : 10 : 11 : 12
Date : Nov.11: Nov.11: Nov.11: Nov.11: Nov.12: Nov.12
S Time(zone): 0810 : 0913 : 1200 : 1525 : 0611 : 0734
U Posit: Lat: 13-31N: 13-31N: 13-33N: 13-30N: 13-37N: 14-03N
B Long: 120-17E: 120-17E: 120-19E: 120-23E: 119-27E: 119-27E
M Speed : 9 : 9 : 8 : 9 : 9 : 9
A Course : 090 : 090 : 050 : 035 : 000 : 000
R Trim : Per : Per : Per : Per : Surf. : Surf.
I Min.Since : : : : : :
N last SD : 170 : 243 : 380 : 585 : 0 : 0
E Search. : : : : : :

Numb: : 1 : 1 : 1 : 1 : 1 : 1

A Type : JAKE : JAKE : BETTY : BETTY : UNK. : BETTY
I Probable : : : : : :
R Mission : PAT : PAT : PAT : PAT : ESC : ESC
C How Con- : : : : : :
R tacted : PER : PER : PER : PER : SD : SIGHT
A Initial : : : : : :
F range : 3 : 5 : 2 : 5 : 8 : 11
T Elevation : : : : : :
angle : 3° : 3° : 3° : 2° : UNK. : 1-1/2
Range&Rel. : : : : : :
bearing of : ND : ND : ND : ND : ND : ND
plane when detected S/M: : : : : :

SEA- (State) : : : : : :
C Beaufort : 3 : 3 : 3 : 3 : 2 : 2
O Direction: : : : : : :
N relative : 290 : 290 : 290 : 290 : 005 : 000
D Visibility : : : : : :
I (miles) : 10 : 10 : 10 : 10 : 30 : 30
T CLOUDS: : : : : :
I Height in: : : : : : :
O feet : 1500 : 1500 : 1500 : 1500 : 2000 : 2000
N Percent : 20 : 20 : 20 : 20 : 60 : 60
S Overcast: : : : : :

[HANDWRITTEN: 41]

— page 231 —
SS272/A16
Serial 051

CONFIDENTIAL

U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

(G) AIRCRAFT CONTACTS (Con't)
Contact No. : 13 : 14 : 15 : 16 : 17 : 18
Date : Nov.12 : Nov.13 : Nov.14 : Nov.15 : Nov.15 : Nov.15
S Time(zone): 1143 : 1004 : 1223 : 0733 : 0923 : 1007
U Posit:Lat : 13-57N : 13-48N : 8-51N : 3-58N : 3-48N : 3-41N
B Long: 119-07E:119-47E:120-00E:121-27E:121-51E:122-02E
M Speed : 15 : 2 : 17.5 : 17.5 : 17.5 : 17.5
A Course : 190 : 132 : 192 : 111 : 111 : 111
R Trim : Surf. : Per. : Surf. : Surf. : Surf. : Surf.
I Min.Since : 0 : 240 : 0 : 0 : 0 : 0
N last SD :
E Search. :

Number : 1 : 1 : 1 : 1 : 6 : 1
: : : FRIEND- : : :
A Type : UNK. : NELL : LY. : BOMBER : P-38 : PBY
I Probable :
R Mission : ESC : RECCO : PAT : UNK : UNK. : PAT.
C How Con- :
R tacted : SIGHT : PER : IFF : SIGHT : IFF : SIGHT
A Initial :
F range : 6 : 8 : 19 : 8 : 22 : 20
T Elevation : : : : : 80When:
angle : 3° : 2° : UNK. : 3° : seen : 1°
Range&Rel :
bearing of: ND : ND : UNK. : ND : UNK. : UNK.
plane when it detected S/M:

SEA-(State :
Beaufort) : 2 : 1 : 1 : 1 : 1 : 1
C Direction :
O relative : 000 : 030 : 050 : 100 : 110 : 100
N Visibility :
D (miles) : 30 : 10 : 30 : 10 : 10 : 30
I CLOUDS- :
T Height in :
I feet. : 1500 : 3000 : 2000 : 1500 : 1500 : 2500
O Percent :
N overcast : 50 : 20 : 50 : 30 : 50 : 60
S

[HANDWRITTEN: 42]

— page 232 —
SS272/A16
Serial 051
CONFIDENTIAL

U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

(G) AIRCRAFT CONTACTS - (Con't)

Contact No. : 19      : 20      : 21      : 22      : 23      : 24
Date        : Nov.15  : Nov.15  : Nov.15  : Nov.24  : Nov.24  : Nov.24
S Time(zone): 1213    : 1418    : 1623    : 1149    : 1528    : 1623
U Posit:Lat : 3-31N   : 3-20N   : 3-10N   : 2-34N   : 2-24N   : 2-24N
B Long      : 122-36E : 123-05E : 123-35E : 127-04E : 126-10E : 126-02E
M Speed     : 16      : 16      : 16      : 16      : 16      : 16
A Course    : 111     : 111     : 111     : 255     : 255     : 270
R Trim      : Surf.   : Surf.   : Surf.   : Surf.   : Surf.   : Surf.
I Min.Since :         :         :         :         :         :
N Last SD   : 0       : 0       : 0       : 0       : 0       : 0
E Search    :         :         :         :         :         :

Number      : 1       : 1       : 1       : 1       : 1       : 1
A Type      : FRIEND- : FRIEND- : FRIEND- : UNK.    : UNK.    : UNK.
T Probable  : LY.     : LY.     : LY.     :         :         :
I Probable  : UNK.    : UNK.    : UNK.    : UNK.    : RECCO.  : UNK.
R Mission   :         :         :         :         :         :
C How Con-  : SD      : IFF     : IFF     : SD      : SD      : SD
R tacted    :         :         :         :         :         :
A Initial   : 23      : 20      : 32      : 6       : 25      : 18
F range     :         :         :         :         :         :
T Elevation : UNK.    : UNK.    : UNK.    : UNK.    : UNK.    : UNK.
angle       :         :         :         :         :         :
Range&Rel.: : UNK.    : UNK.    : UNK.    : ND      : ND      : ND
bearing of: plane when it detected S/M:

SEA-(State  :
Beaufort)   : 1       : 1       : 1       : 1       : 0       : 1
C Direction :
O relative  : 090     : 090     : 055     : 020     : 0       : 040
N Visibility:
D (miles)   : 30      : 30      : 30      : 30      : 20      : 20
S CLOUDS-   :
T Height in :
I feet.     : 2500    : 2500    : 2000    : 2000    : 1500    : 5000
O Percent   :
N overcast  : 40      : 30      : 20      : 40      : 30      : 20
S

[HANDWRITTEN: 43]

— page 233 —
U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 051

CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

(G) AIRCRAFT CONTACTS - (Con't)
Contact No. : 25 : 26 : 27 : 28 : 29 : 30

Date : Nov.26: Nov.26: Nov.26: Nov.27: Nov.27: Nov.27
S Time(zone): 1151 : 1328 : 1515 : 0504 : 0800 : 1645
U Posit:Lat : 8-23N : 8-49N : 9-13N : 12-17N : 12-35N: 12-48N
B Long:119-37E:119-37E:119-45E:120-43E:120-43E:120-38E
M Speed : 16 : 16 : 16 : 14 : 2 : 2
A Course : 000 : 000 : 025 : 354 : 015 : 310
R Trim : Surf. : Surf. : Surf. : Surf. : Per. : Per.
I Min.Since :
N last SD : 0 : 0 : 0 : 0 : [HANDWRITTEN: 15]s. : 6 hrs.
E Search. :

Number : 2 : 1 : 1 : 1 : 1 : 1

Type : FRIEND: FRIEND: SINGLE : : :
A Probable : LY. : LY. : ENG.LAND: UNK. : RUFE : RUFE.
I Mission : PAT : PAT. : UNK. : UNK. : PAT : PAT.
R How Con- :
C tacted : IFF : SD : SIGHT. : SD. : PER. : PER.
R Initial :
A range : 32 : 20 : 12 : 15 : 8 : 12
F Elevation :
T angle : UNK. : UNK. : [HANDWRITTEN: 1°] : UNK. : [HANDWRITTEN: 3°] : [HANDWRITTEN: 2°]
Range&Rel.:
bearing of: UNK. : UNK. : ND : ND. : ND. : ND.
plane when it detected S/M:

SEA-(State :
Beaufort) : 3 : 2 : 2 : 3 : 3 : 3
C Direction :
O relative : 050 : 040 : 040 : 030 : 030 : 030
N Visibility:
D (miles) : 30 : 30 : 30 : 20 : 30 : 30
I CLOUDS- :
T Height in :
I Feet. : 2000 : 2000 : 2000 : 1000 : 1000 : 1000
O Percent :
N Overcast : 60 : 50 : 30 : 0 : 0 : 0
S

[HANDWRITTEN: 4-4]

— page 234 —
SC272/A16
Serial 051

CONFIDENTIAL

U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

(G) AIRCRAFT CONTACTS - (Con't)
Contact No. : 31 : 32 : 33 : 34 : 35 : 36
Date : Nov.28 : Nov.28: Nov.30: Dec.1 : Dec.2 : Dec.3
S Time(zone): 0632 : 1507 : 1322 : 10630 : 1153 : 0746.
U Posit:Lat : 12-26N: 12-26N: 12-23N: 11-04N : 11-41N : 11-41N
B Long: 119-20E:119-06E:118-37E:118-22E:117-56E: 118-01E
M Speed : 10 : 10 : 10 : 10 : 10 : 10
A Course : 090 : 270 : 150 : 090 : 270 : 270
R Trim : Surf. : Surf. : Surf. : Surf. : Surf. : Surf.
I Min.Since : . : . : . : . : . : .
N last SD : 0 : 0 : 0 : 0 : 0 : 0
E Search. : . : . : . : . : . : .

Number : 1 : 1 : 1 : 1 : 1 : 1
A Type : UNK. : LAND- : UNK. : UNK. : UNK. : UNK.
: : BASED-TRAN:
I Probable : UNK. : UNK. : UNK. : UNK. : UNK. : UNK.
R Mission : . : . : . : . : . : .
C How Con- : SD. : SIGHT : SD. : SD. : SD. : SD.
R tacted : . : . : . : . : . : .
A Initial : 10 : 12 : 10 : 12 : 10 : 18
F range : . : . : . : . : . : .
T Elevation : UNK. : 3° : UNK. : UNK. : UNK. : UNK.
angle : . : . : . : . : . : .
Range&Rel. : ND. : ND. : ND. : ND. : ND. : ND.
bearing of: . : . : . : . : . : .
plane when it detected S/M: . : . : . : . : . : .

SEA-(State* : . : . : . : . : . : .
Beaufort) : 2 : 1 : 1 : 1 : 1 : 2
C Direction : . : . : . : . : . : .
O relative : 060 : 030 : 045 : 060 : 050 : 100
N Visibility: . : . : . : . : . : .
D (miles) : 30 : 30 : 30 : 15 : 5 : 5
I CLOUDS- : . : . : . : . : . : .
T Height in : 2000 : 2500 : 2000 : 1500 : 2000 : 1500
I feet. : . : . : . : . : . : .
O Percent : 20 : 40 : 40 : 60 : 100 : 70
N overcast : . : . : . : . : . : .

[HANDWRITTEN: 45]

— page 235 —
SS272/A16
Serial 051

U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

(G) AIRCRAFT CONTACTS - (Con't)

| Contact No. | : | 37 | : | 38 | : | 39 | : | 40 | : | 41 | : | 42 |
| Date | : | Dec. 3 | : | Dec. 3 | : | Dec. 4 | : | Dec. 4 | : | Dec. 4 | : | Dec. 4 |
| S Time(zone) | : | 0951 | : | 1243 | : | 1050 | : | 1158 | : | 1210 | : | 1524 |
| U Posit:Lat | : | 11-42N | : | 11-42N | : | 12-03N | : | 12-02N | : | 12-01N | : | 12-00N |
| B Long | : | 118-08E | : | 118-20E | : | 118-08E | : | 118-09E | : | 118-10E | : | 118-18E |
| M Speed | : | 10 | : | 10 | : | 10 | : | 2 | : | 2 | : | 10 |
| A Course | : | 090 | : | 090 | : | 090 | : | 090 | : | 090 | : | 090 |
| R Trim | : | Surf. | : | Surf. | : | Surf. | : | Per. | : | Per. | : | Surf. |
| I Min.Since: | N last SD | : | 0 | : | 0 | : | 0 | : | - | : | - | : | 0 |
| E Search. | : | | : | | : | | : | | : | | : | |

| Number | : | 1 | : | 1 | : | 1 | : | 1 | : | 1 | : | 1 |
| A Type | : | UNK. | : | UNK. | : | FLOAT | : | 2-ENG. | : | 2-ENG. | : | UNK. |
| P Probable | R Mission | : | UNK. | : | UNK. | : | UNK. | : | UNK. | : | UNK. | : | UNK. |
| C How Con- | R tacted | : | SIGHT | : | SIGHT | : | SIGHT | : | PER. | : | PER. | : | SD. |
| A Initial | F range | : | 10 | : | 10 | : | 10 | : | 5 | : | 12 | : | 23 |
| T Elevation | angle | : | 3° | : | 2° | : | 3° | : | 2° | : | 2° | : | UNK. |
| Range&Rel. | bearing of | : | ND. | : | ND. | : | ND. | : | ND. | : | ND. | : | ND. |
| plane when it detected S/M: | SEA-(State | C Beaufort) | : | 2 | : | 2 | : | 2 | : | 2 | : | 2 | : | 2 |
| O Direction | N relative | : | 100 | : | 090 | : | 110 | : | 110 | : | 110 | : | 110 |
| D Visibility: | I (miles) | : | 10 | : | 10 | : | 2 | : | 2 | : | 2 | : | 2 |
| T CLOUDS- | I Height in | : | 2000 | : | 1500 | : | 2500 | : | 2500 | : | 2500 | : | 6000 |
| O feet. | N Percent | S overcast | : | 70 | : | 50 | : | 80 | : | 80 | : | 80 | : | 70 |

[HANDWRITTEN: 4-8]

— page 236 —
U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 051

CONFIDENTIAL
Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

(G) AIRCRAFT CONTACTS - (Con't)
Contact No. | : 43 | : 44 | : 45 | : 46 | : 47 | : 48
Date | : Dec. 5 | : Dec.6 | : Dec.6 | : Dec.6 | : Dec.7 | : Dec.8
S Time(zone) | : 0734 | : 0912 | : 1151 | : 1258 | : 0934 | : 0622
U Posit: Lat | : 11-52N | : 12-10N | : 11-56N | : 11-52N | : 11-18N | : 11-43N
B | Long | : 118-20E | : 118-26E | : 118-38E | : 118-40E | : 118-17E | : 117-55E
M Speed | : 13 | : 10 | : 10 | : 10 | : 10 | : 10
A Course | : 192 | : 060 | : 150 | : 150 | : 210 | : 280
R Trim | : Surf. | : Surf. | : Surf. | : Surf. | : Surf. | : Surf.
I Min.Since | : | : | : | : | : | :
N last SD | : 0 | : 0 | : 0 | : 0 | : 0 | : 0
E Search. | : | : | : | : | : | :

Number | : 1 | : 1 | : 1 | : 1 | : 1 | : 1
Type | : UNK. | : 2-ENG. | : UNK. | : SINGLE | : FRIEND- | :
A Probable | : | : | : | : ENG. | : LY. | : UNK.
I Mission | : UNK. | : UNK. | : UNK. | : UNK. | : UNK. | : UNK.
R How Con- | : | : | : | : | :
C tacted | : SD. | : SIGHT | : SD. | : SIGHT | : SD. & | : SD.
R Initial | : | : | : | : | : SIGHT. | :
A range. | : 6 | : 10 | : 9 | : 8 | : 22 | : 24
T Elevation | : | : | : | : | :
T angle. | : UNK. | : 3º | : UNK. | : 2º | : 1º | : UNK.
Range&Rel. | : | : | : | : | :
bearing of: | : UNK. | : ND. | : ND. | : UNK. | : ND. | : ND.
plane when it detected S/M: | : | : | : | : | :

SEA-(State- | : 1 | : 1 | : 1 | : 1 | : 2 | : 2
Beaufort) | : | : | : | : | :
C Direction | : 110 | : 090 | : 090 | : 090 | : 020 | : 060
O relative | : | : | : | : | :
N Visibility: | : 10 | : 30 | : 30 | : 30 | : 15 | : 15
D (miles) | : | : | : | : | :
I CLOUDS- | : | : | : | : | :
T Height in | : 3000 | : 4000 | : 4000 | : 4000 | : 5000 | : 5000
I feet. | : | : | : | : | :
O Percent | : | : | : | : | :
N overcast | : 60 | : 60 | : 60 | : 60 | : 40 | : 60
S | : | : | : | : | :

[HANDWRITTEN: 47]

— page 237 —
SS272/A16
Serial 051
CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

(G) AIRCRAFT CONTACTS - (Con't)
Contact No. : 49 : 50 : 51 : 52 : 53 : 54
Date : Dec.9 : Dec.9 : Dec.10:Dec.10 : Dec.11: Dec.11
S Time(zone): 0548 : 0553 : 1023 : 1254 : 1206 : 1349
U Posit:Lat : 11-52N: 11-51N: 10-02N: 9-42N : 7-55N: 7-51N
B Long : 118-05E:118-05E:117-41E:117-25E:115-24E:115-30E
M Speed : 10 : 10 : 10 : 10 : 9 : 9
A Course : 230 : 230 : 218 : 218 : 288 : 108
R Trim : Surf. : Surf. : Surf. : Surf. : Surf. : Surf.
I Min.Since :
N last SD : 0 : 0 : 0 : 0 : 0 : 0
E Search. :

Number : : 1 : 1 : 1 : 1 : 1 : 1

Type : LY : LY : UNK. : UNK. : BOMBER : UNK.
A Probable :
I Mission : UNK. : UNK. : UNK. : UNK. : UNK. : UNK.
R How Con- :
C tacted : IFF : IFF : SD. : SD. : SIGHT. : SD.
R Initial :
A range : 25 : 40 : 24 : 11 : 9 : 26
F Elevation :
T Angle : UNK. : UNK. : UNK. : UNK. : 10 : UNK.
Range&Rel.:
bearing of: : UNK. : UNK. : ND. : ND. : UNK. : UNK.
plane when it detected S/M:

SEA-(State- :
Beaufort) : 3 : 3 : 3 : 3 : 3 : 3
C Direction :
O relative : 030 : 030 : 030 : 030 : 140 : 140
N Visibility:
D (Miles) : 10 : 10 : 10 : 10 : 15 : 15
I CLOUDS. :
T Height in : 2500 : 2500 : 500 : 500 : 3000 : 3000
I feet. :
O Percent : 100 : 100 : 100 : 100 : 80 : 80
N cast :
S

U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

[HANDWRITTEN: 48]

— page 238 —
SS272/A16
Serial 051

CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

(G) AIRCRAFT CONTACTS - (Con't)

Contact No. : 55 : 56 : 57 : 58 : 59 : 60
Date : Dec.12:Dec.14:Dec.14:Dec.14:Dec.15:Dec.15
S Time(zone): 1059 : 0818 : 1150 : 1500 : 0847 : 1502
U Posit:Lat : 8-52N : 7-53N : 7-53N : 7-56N : 7-41N : 7-46N
B Long:115-26E:115-39E:115-39E:115-45E:115-44E:115-52E
M Speed : 9 : 10 : 10 : 10 : 10 : 10
A Course : 108 : 288 : 288 : 108 : 225 : 225
R Trim : Surf. : Surf. : Surf. : Surf. : Surf. : Surf.
I Min.Since : . : . : . : . : . : .
N last SD : 0 : 0 : 0 : 0 : 0 : 0
E Search. : . : . : . : . : . : .

Number : 1 : 1 : 1 : 1 : 1 : 1
Type : UNK. : UNK. : TRANS- : UNK. : UNK. : FRIENDLY.
A Probable : . : . : PORT : . : . : .
I Mission : UNK. : UNK. : UNK. : UNK. : UNK. : PAT.
R How Con- : . : . : . : . : . : .
C tacted : SD. : SD. : SD. : SD. : SD. : SD.
R Initial : . : . : . : . : . : .
A range. : 10 : 24 : 20 : 29 : 35 : 16
F Elevation : . : . : . : . : . : .
T angle. : UNK. : UNK. : 2° : UNK. : UNK. : 6°
Range&Rel. : . : . : . : . : . : .
bearing of: ND. : ND. : UNK. : ND. : ND. : UNK.
plane when it detected S/M: . : . : . : . : . : .

SEA-(State- : . : . : . : . : . : .
Beaufort): 2 : 1 : 1 : 1 : 1 : 1
C Direction : . : . : . : . : . : .
O relative : 170 : 060 : 060 : 060 : 030 : 020
N Visibility: . : . : . : . : . : .
D (Miles) : 15 : 30 : 30 : 30 : 30 : 30
I CLOUDS- : . : . : . : . : . : .
I Height in : 3500 : 4500 : 6000 : 2500 : 5000 : 3000
I feet. : . : . : . : . : . : .
O Percent : . : . : . : . : . : .
N overcast : 90 : 80 : 60 : 40 : 30 : 80
S : . : . : . : . : . : .

[HANDWRITTEN: 49]

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SS272/A16
Serial 051

CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.
U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

(C) AIRCRAFT CONTACTS - (con't)
Contact No. : 61 : 62 : 63 : 64 : 65 : 66
Date : Dec.20 : Dec.21 : Dec.21 : Dec.21 : Dec.21 : Dec.21
Time(zone): 0717 : 0749 : 0936 : 1117 : 1149 : 1535
S Posit:Lat : 7-42N : 10-30N: 10-47N: 11-05N: 11-12N: 11-52N
U Long:115-17E:117-57E:118-10E:118-07E:118-06E:118-02E
B Speed : 10 : 12 : 12 : 12 : 12 : 12
M Course : 045 : 036 : 036 : 352 : 352 : 352
A Trim : Surf. : Surf. : Surf. : Surf. : Surf. : Surf.
R Min.Since :
I last SD : 0 : 0 : 0 : 0 : 0 : 0
N Search. :
E
Number : 1 : 2 : 1 : 1 : 1 : 1
Type : UNK. : UNK. : UNK. : UNK. : B-24 : B-24
A Probable :
I Mission : UNK. : UNK. : UNK. : UNK. : UNK. : UNK.
R How Con- :
C tacted : SD. : SD. : SD. : SD. : SIGHT. : SD.
R Initial :
A range : 9 : 14 & 28: 13 : 32 : 10 : 18
F Elevation :
T angle : UNK. : UNK. : UNK. : UNK. : 2° : 3°
Range&Rel :
bearing of: ND. : UNK. : UNK. : ND. : UNK. : UNK.
plane when it detected S/M:
SEA-(State- :
Beaufort) : 2 : 3 : 3 : 2 : 2 : 2
C Direction :
O relative : 035 : 030 : 030 : 050 : 050 : 000
N Visibility:
D (Miles) : 15 : 15 : 30 : 30 : 30 : 15
I CLOUDS- :
T Height : 1800 : 5000 : 3000 : 3000 : 3000 : 3000
O in feet :
N Percent : 80 : 60 : 40 : 60 : 60 : 40
S overcast :

[HANDWRITTEN: 50]

— page 240 —
SS272/A16
Serial 051

U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

(G) AIRCRAFT CONTACTS - (Con't)
Contact No. | 67      | 68      | 69      | 70      | 71      | 72
||||||
Date.       | Dec.21  | Dec.22  | Dec.22  | Dec.22  | Dec.23  | Dec.23
S Time(zone)| 2031    | 0743    | 1204    | 1252    | 1137    | 1359
U Posit:Lat | 12-50N  | 14-58N  | 15-52N  | 15-57N  | 19-41N  | 20-00N
B Long.     | 117-54E | 117-25E | 117-29E | 117-30E | 118-23E | 118-39E
M Speed.    | 12      | 14      | 13      | 13      | 12      | 12
A Course.   | 345     | 345     | 010     | 010     | 040     | 040
R Trim.     | Surf.   | Surf.   | Surf.   | Surf.   | Surf.   | Surf.
I Min.Since |         |         |         |         |         |
N Last SD   | 136     | 0       | 0       | 0       | 0       | 0
E Search.   |
Number      | 1       | 1       | 1       | 1       | 1       | 1
            |         |         |         |         |         |
A Type      | UNK.    | B-24    | UNK.    | B-24    | UNK.    | Unk.
I Probable  |         |         |         |         |         |
R Mission.  | UNK.    | UNK.    | UNK.    | UNK.    | UNK.    | UNK.
C How Con-  |         |         |         |         |         |
R tacted.   | SJ.     | SD.     | SD.     | SD.     | SD.     | SD.
A Initial   |         |         |         |         |         |
F range.    | 7       | 24      | 8       | 19      | 24      | 25
T Elevation |         |         |         |         |         |
Angle       | UNK.    | 8°      | UNK.    | 8°      | UNK.    | UNK.
Range&Rel   |         |         |         |         |         |
bearing of  | UNK.    | UNK.    | UNK.    | UNK.    | ND.     | ND.
plane when it detected S/M: |
SEA-State   |         |         |         |         |         |
(Beaufort   | 2       | 2       | 2       | 2       | 3       | 3
C Direction | 010     | 010     | 020     | 020     | 020     | 020
O relative  |         |         |         |         |         |
N Visibility:| 10      | 15      | 30      | 30      | 10      | 10
D (Miles)   |         |         |         |         |         |
I CLOUDS-   |         |         |         |         |         |
T Height in | 3000    | 2000    | 3500    | 3500    | 3000    | 2000
I feet.     |         |         |         |         |         |
N Percent   | 10      | 60      | 60      | 60      | 100     | 100
S overcast  |         |         |         |         |         |

[HANDWRITTEN: 51]

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SS272/A16
Serial 051

U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

(G) AIRCRAFT CONTACTS - (Con't)

Contact No. | 73 | 74 | 75
Date | 24 Dec. | 26 Dec. | 27 Dec.
S Time(zone): | 1002 | 1007 | 1247
U Posit:Lat | 20-23 N | 20-37 N | 19-14 N
B Long | 123-05 E | 133-24 E | 138-57 E
M Speed. | 15 | 15 | 13
A Course. | 080 | 090 | 100
R Trim. | Surf. | Surf. | Surf.
I Min.Since | | |
N last SD | 0 | 0 | 0
E Search. | | |

Number | 1 | 1 | 1

Type | UNK. | UNK. | UNK.
A Probable | | |
I Mission. | UNK. | UNK. | UNK.
R How Con- | | |
C tacted | SD. | SD. | SD
R Initial | | |
A range | 28 | 28 | 20
F Elevation | | |
T angle | UNK. | UNK. | UNK.
Range&Rel | | |
bearing of | UNK. | UNK. | ND
plane when it detected S/M

SEA-(State- | | |
Beaufort. | 1 | 3 | 2
C Direction | 045 | 050 | 060
O relative | | |
N Visibility: | 30 | 30 | 30
D (Miles) | | |
I CLOUDS- | 3000 | 3500 | 3000
T Height in | | |
I feet. | | |
O Percent | 100 | 100 | 50
N overcast | | |
S | | |

[HANDWRITTEN: 52]

— page 242 —
[HANDWRITTEN: T]
[HANDWRITTEN: 1]
SS272/A16
Serial 051
CONFIDENTIAL

U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

(H) ATTACK DATA

U.S.S. REDFIN(SS272) - Torpedo Attack No.ONE - Patrol No.FIVE.
Time: 2019. DATE: Nov.8,1944. Lat: 13-54E. Long: 117-04E.

Target Data - Damage Inflicted

Description:
  Large Tanker - 10,000 Tons EU.
  Three small escorts, unidentified.
  Second Tanker - EU.
  The targets were in a column about 1000 yards apart.
Ships Sunk:
  None.
Ships Damaged or Probably Sunk:
  None.
Target Draft: 25 ft. Course: 230 T. Speed: 11 kts. Range:3200
                                                    yds(at firing)

Own Ship Data

Speed: 12 kts. Course: 330 T. Depth: Surf. Angle: Zero(at firing)

Fire Control and Torpedo Data

Type Attack:
  Surface Radar. TBT bearings continuously during the
  firing. This attack was made from the target's port
  beam. The port escort was well back on the port quarter
  and in no way molested the attack. Bridge estimate
  of the angle on the bow checked all the way in with
  those obtained on TDC. Six (6) torpedoes were fired
  with no hits. Two (2) torpedoes ran erratic and passed
  astern the others passed ahead. It is believed that
  Nos. 3 & 6 were the erratic torpedoes. Torpedoes
  Nos. 3, 5, & 6 were heard to hit the shutters as they
  left the tubes.

[HANDWRITTEN: 53]

— page 244 —
U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 051

CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

(H) ATTACK DATA.

U.S.S. REDFIN(SS272) - Torpedo Attack No.THREE - Patrol No.FIVE.
Time: 2151 Date: Nov.8,1944 Lat: 13-46.5 N. Long: 116-53 E.

Target Data - Damage Inflicted

Description:

Large Tanker - 10,000 Tons, EU.
Three (3) small unidentified escorts.

Ships Sunk:

One (1) Tanker - 10,000 Tons. EU.

Damaged or Probably Sunk:

None.

Damaged Determined by:

Two (2) hits were heard and observed. First hit just aft of
bridge - second hit in engine space. The target was seen
to stop and smoke heavily with intermittent flames.
Tracked at zero speed. Later the target was observed to
sink and the smoke cleared. The target also disappeared
from radar screen at time of sinking.

Target Draft: 25 Ft. Course: 210 T. Speed: 11 kts.Range:2750 yds.
(at firing)

Own Ship Data

Speed: 10 kts. Course: 33C T. Depth: Surf. Angle:Zero(at firing)

Fire Control and Torpedo Data

Type Attack:

Radar Surface - continuous TBT bearings from time of
sighting target. The target had been in a column but as a
result of Attack No.1 and 2 they had become separated by
about 5 miles. Two escorts were back close to the second
tanker and one was about half way between trying to close
up.This permitted a slow deliberate attack unmolested
by escorts.
[HANDWRITTEN: 55]

— page 245 —
U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 051

CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

(H) ATTACK DATA

U.S.S. REDFIN(SS272) - Torpedo Attack No.FOUR - Patrol No.FIVE.

Time: 2042 Date: Nov.12,1944 Lat: 13-00. 5 N. Long: 118-13.5E.

Target Data - Damage Inflicted

Description:
Target group consisted on one large engines aft. AK (9000
tons) EU leading two smaller unidentified AK's in column.
One two-stack DD (U/I) and one small escort on port beam,
and one small U/I escort on starboard beam.

Ships Sunk:
None.

Ships Damaged or Probably Sunk:
One (1) large engines aft. AK (9000 tons) EU.

Damaged Determined by:
One (1) hit was observed and heard. Target stopped. Opened
range to 8000 yards and stopped. Observed target group for
two hours. The target was stopped with the escorts milling
around, doing considerable depth charging. Contact with the
two smaller AK's was lost immediately along with one of
the escorts. Only one pip besides the target's pip remained
on the radar; however, two pingers continued to be heard.
The target pip became progressively smaller until it reached
the size of the escort. Later one of the remaining pips
was lost but the two pingers persisted. It is possible that
the target sank, however, only damage is claimed. Only one
small silhouette could be seen at time of departure.

Target Draft: 18 ft. Course: 210 T. Speed: 10.5 kts.Range:
4050 yds(at firing)

Own Ship Data

Speed: 13 kts.Course: 135 T. Depth: Surf. Angle: Zero(at firing)

Fire Control and Torpedo Data

Type Attack:
Radar Surface with continuous TBT bearings from time of
sighting target.

5 6

— page 246 —
SS272 16
Serial 051
CONFIDENTIAL

U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

(H) ATTACK DATA

U.S.S. REDFIN(SS272) - Torpedo Attack No.FIVE - Patrol No.FIVE.
Time: 2044 Date: Nov.12,1944 Lat: 12-00.5N Long: 118-13.5E.

Target Data - Damage Inflicted.

Description:

1 Small U/I Escort EU

Ships Sunk:

None.

Ships Damaged or Probably Sunk:

None.

Target Draft: 8 ft. Course: 210 T. Speed: 10.5 kts. Range: 1200
                                                    yds.(at firing)

Own Ship Data

Speed: 16 kts. Course: 250 T. Depth: Surf. Angle: Zero(at firing)

Fire Control and Torpedo Data

Type Attack:

Radar Surface with continuous TBT bearings.
This was a surface down-the-throat shot.
All torpedoes missed probably because target
was maneuvering more than was thought.

[HANDWRITTEN: 3-7]

— page 247 —
U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 051

CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.
(H) FIRST ATTACK (First Salvo)

| | No. 1 | No. 2 | No. 3 | No. 4 | No. 5 | No. 6 |
|:|:|:|:|:|:|:|
| TUBES FIRED | : 88 P. | 89 P. | 89-1/2P. | 91 P. | 93 P. | 90 P |
| TRACK ANGLE | : 353-1/2 | 353 | 352-1/2 | 347 | 345 | 341 |
| DEPTH SET | : 6 ft. | 6 ft. | 6 ft. | 6 ft. | 6 ft. | 6 ft. |
| POWER | : High | High | High | High | High | High |
| HIT or MISS | : Miss | Miss | Miss | Miss | Miss | Miss |
| ERRATIC | : No | No | Yes | No | Yes | No |
| MARK TORPEDO | : 23 | 23 | 23 | 23 | 23 | 23 |
| SERIAL NO. | : 41376 | 41095 | 53002 | 41298 | 41396 | 49466 |
| MARK EXPLODER | : 6-5 | 6-5 | 6-5 | 6-5 | 6-5 | 6-5 |
| SERIAL NO. | : 7716 | 26057 | 14638 | 14216 | 6697 | 13237 |
| ACTUATION SET | : Contact | Contact | Contact | Contact | Contact | Contact |
| ACTUATION ACTUAL | : - | - | - | - | - | - |
| MARK WARHEAD | : 16-1 | 16-1 | 16-1 | 16-1 | 16-1 | 16-1 |
| SERIAL NO. | : 3444 | 11014 | 9223 | 2957 | 11110 | 2561 |
| EXPLOSIVE | : TPX | TPX | TPX | TPX | TPX | TPX |

FIRING INTERVAL : 8 Seconds.
TYPE SPREAD : Divergent
SEA CONDITIONS : Calm.
OVERHAUL ACTIVITY: U.S.S. EURYALE.
REMARKS : Number 3 and 5 torpedoes were seen to run
erratic and pass well aft of the target.
Number 3,5 and 6 were heard to hit the
shutters when fired.

[HANDWRITTEN: 58]

— page 248 —
SS272/A16
Serial 051

U. S. S. REDFIN (SS272)
c/o Fleet Post Office,
San Francisco, Calif.

CONFIDENTIAL
Subject: Report of U.S.S. REDFIN (SS272) War Patrol No.5.
(H) SECOND ATTACK

TUBES FIRED | No. 7 | No. 8 | No. 9 | No. 10
|-------|||
TRACK ANGLE | : 125 P | 128 P | 130 P | 132 P
GYRO ANGLE | : 185 | 186 | 189 | 186
DEPTH.SET | : 6 ft. | 6 ft. | 6 ft. | 6 ft.
HIT or MISS | : Miss | Miss | Miss | Miss
ERRATIC | : No | No | No | No
MARK TORPEDO | : 18-1 | 18-1 | 18-1 | 18-1
SERIAL NO. | : 56242 | 55843 | 56251 | 55096
MARK EXPLODER | : 8-5 | 8-5 | 8-5 | 8-5
SERIAL NO. | : 8022 | 8165 | 9068 | 9103
ACTUATION SET | : Contact | Contact | Contact | Contact
ACTUATION ACTUAL | : - | - | - | -
MARK WARHEAD | : 18-2 | 18-2 | 18-2 | 18-2
SERIAL NO. | : 1878 | 1922 | 3261 | 2704
EXPLOSIVE | : TPX | TPX | TPX | TPX
FIRING INTERVAL | : 8 Seconds
TYPE SPREAD | : Divergent
SEA CONDITIONS | : Calm.
OVERHAUL ACTIVITY: U.S.S. EURYALE.
REMARKS | : Torpedoes ran normal from all indications.

5-9

— page 249 —
U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 051

CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

(H) THIRD ATTACK

| | : No. 1 | N° 2 | No. 3 | No. 4 | No.5 | No.6 |
|---|---|---|---|---|---|---|
| TUBES FIRED | :60 P | 61 P | 62 P | 63 P | 64 P | 65 P |
| TRACK ANGLE | :358½ | 359½ | 359½ | 358 | 357 | 359 |
| DEPTH SET | :6 ft. | 6 ft. | 6 ft. | 6 ft. | 6 ft. | 6 ft. |
| POWER | :High | High | High | High | High | High |
| HIT or MISS | :Miss | Miss | Miss | Hit | Miss | Hit |
| ERRATIC | :No | No | No | No | No | No |
| MARK TORPEDO | :23 | 23 | 23 | 23 | 23 | 23 |
| SERIAL NO. | :49809 | 33861 | 41197 | 33821 | 41384 | 41425 |
| MARK EXPLODER | :6-5 | 6-5 | 6-5 | 6-5 | 6-5 | 6-5 |
| SERIAL NO. | :12841 | 26786 | 26746 | 6774 | 26757 | 26785 |
| ACTUATION SET | :Contact | Contact | Contact | Contact | Contact | Contact |
| ACTUATION ACTUAL | :- | - | - | Contact | * | Contact |
| MARK WARHEAD | :16-1 | 16-1 | 16-1 | 16-1 | 16-1 | 16-1 |
| SERIAL NO. | :19384 | 6188 | 34266 | 17394 | 16234 | 12996 |
| EXPLOSIVE | :TPX | TPX | TPX | TPX | TPX | TPX |

FIRING INTERVAL :8 Seconds
TYPE SPREAD :Divergent
SEA CONDITIONS :Calm.
OVERHAUL ACTIVITY: U.S.S. EURYALE.
REMARKS :Torpedoes ran hot straight and normal.

60

— page 250 —
U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 051

CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

(H) ATTACK NO. FOUR

TUBES FIRED       :
TRACK ANGLE       : 80 S         81 S         81 S         82 S
GYRO ANGLE        : 335          336-1/2      336-1/2      339
DEPTH SET         : 6 ft.        6 ft.        6 ft.        6 ft.
POWER             : High         High         High         High
HIT or MISS       : Miss         Miss         Miss         Hit
ERRATIC           : No           No           No           No
MARK TORPEDO      : 23           23           23           23
SERIAL NO.        : 49648        49990        49216        52847
MARK EXPLODER     : 6-5          6-5          6-5          6-5
SERIAL NO.        : 26767        10761        12139        8048
ACTUATION SET     : Contact      Contact      Contact      Contact
ACTUATION ACTUAL  : -            -            Contact
MARK WARHEAD      : 16-1         16-1         16-1         16-1
SERIAL NO.        : 19419        19409        11315        2973
EXPLOSIVE         : TPX          TPX          TPX          TPX

FIRING INTERVAL   : 8 Seconds
TYPE SPREAD       : Divergent
SEA CONDITIONS    : Light Sea
OVERHAUL ACTIVITY: U.S.S. EURYALE.
REMARKS           : Torpedoes ran hot straight and normal.

[HANDWRITTEN: L I]

— page 252 —
U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 051

CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

— page 253 —
U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 051

CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

MAJOR DEFECTS AND DAMAGE (Con't)

(2) Electrical:
(a) Because of the danger of losing all I.C.
Power and also their being a fire hazard, the cut-out switches
in the D.C. Supply to the I.C. Motor-Generator sets contractor
panels were removed from the circuit. The switches were badly
burned and pitted and on several occasions smoked. Before
removal one of the switches was snapped to the off position
and the metal contactors fell apart.
These switches designed for 60 amps were carrying a much
larger load. The overload relays in the contactor panels are
set at 108 amps and have never been tripped out by overload.
The 108 amps D.C. overload relay setting is no protection for
the 60 amps switch. Fuses mounted in place of the switches
would solve the problem in all respects.
(b) On the night of December 16th a submerged
object struck the Pit-log rod-meter temporarily putting Pit-
log out of commission. Rod-meter could not be housed, indi-
cating a bent rod-meter. After blowing out the dynamic ori-
fice Pit-log worked accurately. But not being able to house
the rod-meter, prevented a deep submergence without the
possibility of damage to the Pitometer Log Control Unit.

(L) RADIO

Radio reception was good throughout the entire
patrol. The Army Air Force schedule (4155 kcs at 1800 -
1830 Z) was copied regularly with no difficulty. However,
because of the patrol areas assigned to the Redfin, we were
unable to take advantage of any of the contact reports re-
ceived from this source.
In the RBO, shorting of a 6x5 rectifier tube
burned out the power transformer. Ships force rewound the
transformer and made temporary repairs.

(M) RADAR
1. S.J. Radar:
Performance of the SJ Radar was excellent.
Typical initial ranges were:
Large Tanker 23000 yards.
Destroyer 16000 yards.
Low flying plane 10000 yards.

[HANDWRITTEN: 64]

— page 254 —
U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 051

CONFIDENTIAL
Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

RADAR - (Con't)

The principal source of trouble was condensor
C(1)22 which failed four times. Fortunately we were able to
piece together enough halves of this twin condensor to effect
the necessary repairs. The reason for such consistent failure
of this part is still unknown. The only other casualty worthy
of mention was failure of the Modulation Network in the trans-
mitter. The SJ was out of commission for eight hours while
circuits were checked and a spare part installed.

2. S.D. Radar:

Contacts were obtained on the SD at ranges varying
from 6 to 26 miles. Consistent performance of this gear was of
great help to us with our more than plentiful aircraft contacts
on this patrol.
Although the SD was keyed from sunrise to sunset for
more than 60 days, the only material failure was oscillator tube
801A. This tube was replaced three times.

3. I.F.F.
Both the BN and the ABK gave good performance. BN
ranges varying from 14 to 45 miles were obtained. The ABK was
"triggered off" at ranges up to 35 miles.
Failure of the relay used in BN interconnection with
the SD was the only critical difficulty encountered. Since no
spare part was provided we used an identical relay from the WCA
Sonar spares. A minor source of trouble was number 15 transmitter
tube which was replaced twice.

4. SPA/APR
Results obtained from this gear are tabulated in
paragraph 6 of this section.
Although a nearly continuous watch was maintained on
the SPA/APR, the only casualty was failure of high voltage
rectifier tube 2x2. A short in this tube burned out resistor
R201. Both were replaced with spares.

5. VHF
Condensation from a ventilation duct above the
VHF caused a ground on this equipment, which ground in turn
showed up on the main battery. Since the ground could not
be entirely eliminated, the VHF was secured until replaced
by another of the same type at Mios Woendi.
Both units gave satisfactory communications with
other submarines at ranges up to 6000 yards.

[HANDWRITTEN: 65]

— page 255 —
U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 051
CONFIDENTIAL
Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

RADAR DETECTION CONTACTS (Radar Section)

— page 256 —
U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 051
CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

RADAR INTERCEPTIONS - (Con't).
No.         : 6     : 7     : 8     : 9     : 10    : 11    : 12    : 13
:-------:-------:-------:-------:-------:-------:-------:-------
Date        : 7-Nov : 7-Nov : 12-Nov: 12-Nov: 16-Nov: 24-Nov: 25 Nov.: 25 Nov.
Time        :       : 2133  :       : 1700  :       : 1723  :       : 1419
(zone)      : 0510  :       : 0210  :       : 2115  :       : 0235  :
Posit:About :       : 14-00N:       : 13-22N:       : 2-44N :       : 4-04 N
Lat         : 13-40N:       : 14-10.5N:       : 2-45N :       : 3-3.5N:
Long:116-   : 118-  : 119-  : 118-  : 130-  : 126-  : 123-  : 121-
            : 40E   : 00 E  : 45 E  : 54 E  : 5 E   : 1 E   : 57 E  : 00 E
Course:295  : 270   : 180   : 195   : 110   : 310   : 290   : 283
Speed :13.5 : 6.5   : 10    : 17.5  : 16.5  : 17.5  : 14    : 15.5
Freq        :       :       :       :       :       :       :       :
of          : 145   : 150   : 150   : 248   : 110   : 325   : 150   : 200
signal:     :       :       :       :       :       :       :
(mcs)       :       :       :       :       :       :       :       :
Pulse       :       :       :       :       :       :       :       :
Width       :       :       :       :       :       :       :       :
(Micro      : 1.5   : 5     : 5     : 12    : 4     : 5     : 3
Sec's):     :       :       :       :       :       :       :
Pulse       :       :       :       :       :       :       :       :
Rate        : 40    : 500   : 500   : 1000  : 500   : 500   : 500   : 1600
(C.P.S.     :       :       :       :       :       :       :       :
:-------:-------:-------:-------:-------:-------:-------:-------
R           :Apparently:Fairly:Weak :Appar :Sweep  :Showed :Came in:Picked up
E           :sweep  :strong:sig- :ently :about  :up     :&remain:shortly
M           :radar. :for   :nal. :sweep :every  :with   :ed steady:after
A           :A few  :about :     :radar :2 min  :U/I    :until  :friendly
R           :strong :1.5   :     :Weak  :Fair-  :plane  :faded  :planes
K           :signals:min.  :     :sig-  :ly     :con-   :out.   :passed us.
S           :for about:Be-  :     :nal.  :weak.  :tact   :       :Steady
            :2 minutes:came :     :Be-   :       :on SD  :       :signal.
            :       :weaker:     :lieved:       :       :       :Lost 1445.
            :       :Faded :     :to be :       :       :       :
            :       :out in:     :ship- :       :       :       :
            :       :about :     :borne :       :       :       :
            :       :3 min.:     :air-  :       :       :       :
            :       :      :     :craft :       :       :       :
            :       :      :     :search:       :       :       :

.67

— page 257 —
U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 051
CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

— page 258 —
U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 051

CONFIDENTIAL

Subject: Report of U.S.S. REDFIN(SS272) War Patrol No.5.

(N) SOUND AND SOUND CONDITIONS

Since practically all of our time was spent in
surface running, there are no comments to be made
on this subject.

(O) DENSITY LAYERS

Bathytnermographic cards will be turned into the
Hydrographic Office. Because of a casualty early
in the patrol which prevented housing the pit-log
sworlarm very few deep dives were made.

(P) HEALTH, FOOD AND HABITABILITY

The health of the crew was above average. There
were no serious illnesses. The greatest improve-
ment in this line for this patrol was the instal-
lation of an ice cream freezer.

69

— page 259 —
U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 051.
CONFIDENTIAL

Subject: U.S.S. REDFIN(SS272) War Patrol No.5. report of.

— page 261 —
FC5-16/A16-3
Serial: 06
C-O-N-F-I-D-E-N-T-I-A-L

FIRST ENDORSEMENT to
U.S.S. REDFIN (SS272)
Report of Fifth War Patrol.

SUBMARINE SQUADRON SIXTEEN
Care of Fleet Post Office,
San Francisco, California,
7 January 1945.

From: Commander Submarine Squadron SIXTEEN.
To : Commander in Chief, United States Fleet.
Via : Commander Submarine Force, Pacific Fleet.
Commander in Chief, U. S. Pacific Fleet.
Subject: U.S.S. REDFIN (SS272) - Report of Fifth War Patrol.

1. The first phase of the fifth war patrol of the U.S.S. REDFIN
was conducted just north of Dangerous Ground in the South China Sea and the
second phase of the patrol covered the vicinity of Palawan passage. The
duration of patrol was 75 days of which 46 days were spent in assigned areas,
4 days alongside tenders in Advanced Bases while 25 days were consumed in
passage to and from the areas.

2. It is indeed unfortunate that erratic torpedo performance
prevented full realization of the opportunities encountered in the first
phase of the patrol. It is also regretted that opportunities for attack were
not available during the arduous second phase of the patrol. The Commanding
Officer's action in coordinated attack with the BARBERO resulting in the
destruction of the enemy convoy is considered worthy of special mention.
The description of the REDFIN's transit of Lombok Strait, outlining its shore
batteries, the disposition of small craft, current sets and enemy air patrols
is recommended for persual by Commanding Officers' expecting to make this
passage for the first time.

3. The REDFIN passed through Sibutu on the night of November
fourth and arrived in the assigned area three days later. On November eighth
contact was made with two large tankers screened by at least three escorts.
An attack with ten torpedoes was made, all of which missed in spite of the
fact that the problem checked perfectly by visual observation and generated
data as indicated by the computer. Because of his aggressive and persistent
action, the Commanding Officer finally attained a position to attack the
large tanker which had gone on ahead alone and which resulted in the ob-
servation of two direct hits from the six torpedoes in the salvo. Twenty-
four minutes later the tanker was seen to sink. The REDFIN then cleared the
area for the BARBERO's approach and observed the latter successfully attack
the second tanker.

4. On November eleventh, in the development of a smoke contact,
another convoy was intercepted. An end around run was made and four tor-
pedoes were fired at a large cargo ship. One hit was observed and it is
probable that this vessel was sunk also but conditions were such to preclude
accurate observations of the damage inflicted.

-1-

— page 262 —
FC5-16/A16-3
Serial: 06
C-O-N-F-I-D-E-N-T-I-A-L
FIRST ENDORSEMENT to
USS REDFIN (SS272)
Report of Fifth War Patrol.

SUBMARINE SQUADRON SIXTEEN
Care of Fleet Post Office,
San Francisco, California,
7 January 1945.

Subject: U.S.S. REDFIN (SS272) - Report of Fifth War Patrol.

5. The ship is clean and, in spite of the extended duration
of the patrol, presented a smart appearance. The morale of both officers
and men are high and although physical fatigue is apparent, all hands are
in excellent spirit. Navy Yard availability has been scheduled in the Bay
Area and only voyage repairs will be accomplished by the U.S.S. ORION. No
changes in personnel are anticipated at this time.

6. Recommended assessment of damage to the enemy is:
SUNK
1 large tanker 10,000 tons

DAMAGED
1 large AK 10,000 tons

7. The Squadron Commander extends a hearty welcome to officers
and men of the REDFIN and congratulates them all upon completion of a long
and arduous patrol that inflicted such heavy damage upon the enemy.

[SIGNATURE: G. L. SHAN]
G. L. SHAN,
Acting.

— page 263 —
FF12-10/A16-3(15) SUBMARINE FORCE, PACIFIC FLEET
Serial 0113 [STAMP: RECEIVED S-C FILES] DP
CONFIDENTIAL [HANDWRITTEN: 23c] Room 2055 Care of Fleet Post Office;
San Francisco, California.
[HANDWRITTEN: NOTE TO:] 22 JAN 1945 12 January 1945.
SECOND ENDORSEMENT on [HANDWRITTEN: F1-9a. (B6)] [HANDWRITTEN: A16-3/23] [HANDWRITTEN: 151534] NOTE: THIS REPORT WILL BE
REDFIN Report of Des. No. DESTROYED PRIOR TO
Fifth War Patrol. [HANDWRITTEN: Copy No.] ENTERING PATROL ARE...

COMSUBSPAC PATROL REPORT NO. 64.0 [HANDWRITTEN: destroyed]
U.S.S. REDFIN - FIFTH WAR PATROL. [HANDWRITTEN: 2. (Copy)]

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

Subject: U.S.S. REDFIN (SS272) - Report of Fifth War Patrol
(26 October, 1944, to 7 January, 1945).

1. The fifth war patrol of the REDFIN, under the command of
Commander M. H. Austin, U.S. Navy, was conducted in the central part
of the South China Sea and vicinity of Palawan Passago. The REDFIN,
along with the U.S.S. HADDO (SS255) and the U.S.S. BARBERO (SS317),
formed a coordinated attack group with the commanding officer of the
BARBERO as the group commander.

2. Despite thorough and alert area coverage, few contacts
were made during this long patrol, all of which were made during the
first part of the patrol prior to the reload at Mios Woendi except
two DD's which could not be closed during the latter part of the pa-
trol. The first contact made consisted of two AO's and three escorts.
The REDFIN sank one of the AO's and observed the attack made by the
BARBERO on the other, which apparently was sunk. On 12 November,
three contacts were made within a short period of time, one of which
was developed into an attack. Four torpedoes were fired at a large,
stacks-aft AK, and one hit was seen and heard. Three more were fired
at one of the escorts in a short range, down-the-throat attack with-
out success.

3. Award of the Submarine Combat Insignia for this patrol
is authorized.

4. The Commander Submarine Force, Pacific Fleet, congratu-
lates the commanding officer, officers, and crew for this aggressive
and successful patrol. The REDFIN is credited with having inflicted
the following damage upon the enemy during this patrol:

S U N K
1 - Large AO (EU) - 10,000 tons

[STAMP: OFFICE of the Chief of Naval Operations]
[STAMP: FLEET MAINTENANCE]
[STAMP: 24 JAN 1945]
[STAMP: (Attack No. 3)]
[STAMP: RECEIVED]
[STAMP: NAVY DEPARTMENT]

276 CONFIDENTIAL
- 1 -

— page 265 —
[HANDWRITTEN: 2ND COPY]

U.S.S. REDFIN (SS272)
c/o Fleet Post Office
San Francisco, Calif.

SS272/A4-3/
Serial 031
[TYPED, STRUCK THROUGH: DECLASSIFIED]
10 July 1945.

From: The Commanding Officer, U.S.S. REDFIN (SS272).
To : The Commander in Chief, United States Fleet.
Via : (1) The Commander Submarine Division 341.
(2) The Commander Submarine Squadron 34.
(3) The Commander Submarine Force, Pacific Fleet.
(4) The Commander in Chief, United States Pac.Flt.

Subject: U.S.S. REDFIN (SS272) - Report of War Patrol
number SIX.

Enclosures: (A) Subject Report.
(B) Track Chart.
(C) Special Report for COMSUBPAC only.
(D) Two (2) Special Track Charts for COMSUBPAC only.

1. Enclosure (A) covering the SIXTH War Patrol of
this vessel conducted in the areas off the south coasts of
HONSHU and HOKKAIDO during the period 30 May, 1945 to 10 July
1945, is forwarded herewith.

C. K. MILLER.

[STAMP: DECLASSIFIED ART. 0445, OPNAVINST 5510.1C]
[HANDWRITTEN: BY OP-09B9C DATE 6/1/72]
[STAMP: DECLASSIFIED]

[HANDWRITTEN: FILMED]
[HANDWRITTEN: 133520]

— page 266 —
SS272/A4-3/A9
Serial 031
CONFIDENTIAL

U.S.S. REDFIN (SS272)
c/o Fleet Post Office,
San Francisco, Calif.

10 July 1945.

(A) PROLOGUE

Arrived San Francisco, California for Navy Yard over-
haul on 15 January 1945 following 5th war patrol. The
Redfin had departed Fremantle, W.A. on October 26, 1944 and
cruised 21,500 miles in 81 days. No major and very few
minor casualties occurred during this period which is a
splendid tribute to the building yard, Manitowoc Shipbuild-
ing Co., Manitowoc, Wisconsin and the last refit activity,
the U.S.S. EURYALE (AS22) and SUBDIV-182.

The overhaul was normal and completed in the scheduled
time. Forward battery was not rearranged due to shortage
of sheet metal workers. The following important alterations
and repairs were accomplished:-

1. SD Radar installation.
2. Relocated SD Radar mast in radio room.
3. MK.IV Range and bearing repeaters in C.T. and Control.
4. Changed armament to one 5"/25, one 40 MM, and one
   twin 20 MM.
5. Hydraulic periscopes.
6. Additional TC Motor Generator.
7. MK. VIII TBT.
8. DRT with 200, 500, 1000, 2000 yards, and 1 to 8
   miles range scale.
9. Bolted type blanks on all deck hatches.
10. T.D. topside QB head, SOL, and MAT.
11. Changed from aluminum to cast iron pistons.
12. Installed propeller guards and cable clearing wires.

Lieutenant Commander C. K. MILLER relieved Commander
M. H. AUSTIN as Commanding Officer 23 February 1945. Two
more officers were detached and two replacements reported
on board at Pearl Harbor. Two officers and nine men were
married.

Departed Bay area 16 April and arrived San Diego 19 April.
Commenced 10 days special tests and training. Departed San
Diego 30 April and arrived Pearl Harbor 7 May. Had 5 days
voyage repairs and two weeks intensive training under direct-
ion of Commander C. E. LOUGHLIN. Departure delayed four
to replace propellers and faulty cable clearing wires.

-1-
(ENCLOSURE A)

— page 267 —
U.S.S. REDFIN (SS272)
10 July 1945.

SS272/A4-3/
Serial 031
CONFIDENTIAL
(B) NARRATIVE
30 May 1945

1316 Underway enroute Saipan in company with U.S.S. SILVER-
     SIDES U.S.S. QUILLBACK, U.S.S. PC 1070 as escort,
     with the below listed officers and chief petty officer
     on board:-

     NAME                      DUTY                      NO. WAR PATROL
     C. K. MILLER,             Lt-Cdr, USN Comdg.        11
     G. R. MITCHEL,            Lieut., USN Exec. & Nav.  6
     L. L. REINHARDT,          Lieut., USNR 1st Lt.      6
     J. A. TAYLOR,             Lt(jg), USNR Eng. & Elec. 5
     W. F. MEINERS,            Lt(jg), USNR Asst. 1st Lt. 1
     H. P. HAYES,              Lt(jg), USNR Gun. & Torp. 5
     B. M. GRAHAM,             Lt(jg), USNR Communications. 3
     W. M. HANLEY,             Ensign, USNR. Asst. Comm. 1
     L. W. COLEMAN,            Elec., USN Asst. Eng.     12

     Chief Petty Officers
     O'HARA, W. H.,            USN CTM(PA)               9
     HENDERSON, F.C.,          USN CEM(T)                10
     DAVIS, S.,                USN CMOMM(T)              7
     GRANT, P.H.,              USN CMOMM(AA)(T)          6
     HARRINGTON, K.G.,         USN CY(T)                 6
     FIAROWSKI, F.,            USN CPhM(T)               5
     BURR, R. W.,              USN CCS(PA)               3

31 May 1945
1200(W) Position:-          Lat: 20-54.7' N.
                            Long: 163-09.0' W.

1 June 1945
1000(Y) Passed eastbound U.S.S. GATO.
1200    Position:-          Lat: 20-58.2' N.
                            Long: 168-27.0' W.

2 June 1945
1200(Y) Position:-          Lat: 20-51' N.
                            Long: 173-46' W.

-2-
(ENCLOSURE A)

— page 268 —
SS272/A4-3/A
Serial 031

CONFIDENTIAL

3 June 1945
0320(Y) Passed eastbound U.S.S. PERCH.
1200 Position: Lat: 20-52.4' N.
Long:179-19' W.
1400 Crossed 180th meridian. 4 June omitted.

5 June 1945
1200(M) Position: Lat: 20-54.7' N.
Long:175-14' E.

6 June 1945
1200(M) Position: Lat: 21-07' N.
Long:169-54.5'E.

7 June 1945
120(L) Position: Lat: 20-50.1' N.
Long:164-04.0' E.

8 June 1945
1200(L) Position: Lat: 19-36.2' N.
Long:158-46.5' E.

9 June 1945
1200(K) Position: Lat: 18-15.5' N.
Long:153-19.0' E.
1700 Passed eastbound U.S.S. BREAM.
1800 Received orders changing destination to GUAM.

10 June 1945
0600(K) Parted company U.S.S. SILVERSIDE and U.S.S. QUILIBACK.
1200 Position: Lat: 16-53.0' N.
Long:147-27.0' E.

11 June 1945
0800(K) Made rendezvous with escort and U.S.S. SCABBARD FISH,
proceeded to Guam.
1100 Moored alongside U.S.S. HOLLAND with U.S.S. GUNIEL and
U.S.S. STEELHEAD. Made minor voyage repairs, topped off
fuel and stores. Two days special training, one day's
loading.

-3- (ENCLOSURE A)
U.S.S. REDFIN(SS272)
10 July 1945

— page 269 —
U.S.S. REDFIN (SS272)
10 July 1945

SS272/A4-3/
Serial 031

CONFIDENTIAL

15 June 1945
1500(K) Departed GUAM in company with U.S.S. TREPANG, escorted
to joint zone. SOA 14 knots.

16 June 1945
0000 Proceeding up joint zone. Had numerous contacts with
friendly planes.
1200 Position: Lat: 16-59.5' N.
Long: 144-06.5' E.

17 June 1945
0850 Sighted friendly southbound submarine.
Did not exchange recognition.
1200 Position: Lat: 20-17.4' N.
Long: 140-10' E.
1341 Sighted southbound U.S.S. TORO. Made rendezvous.
1430 Received needed spare from Toro via rubber boat.
Continued northward in joint zone.

18 June 1945
1105 Passed close aboard a neat sign with notations
"POSITIVELY NO SMOKING IN THIS AREA."
1200 Position: Lat: 25-26 N.
Long: 139-40 E.

19 June 1945.
0800 Commenced being troubled with bow clearing cables
fouling on starboard cleat.
0855 Bar protecting forward cleats snapped. Slowed, put
men on deck, removed bar. Sea state 4.
1200 Position: Lat: 30-38N.
Long: 140-05E.
1209 Slowed to 2 engine speed, making 10 knots.
1930 Put men on deck and completed repairs to special rigging
forward. Definitely a jury rig, but the best we can do.
2230 Received orders changing 1st Assignment.
Acknowledged.

-4-
(ENCLOSURE A)

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SS272/LL-3/A9
Serial 031
[HANDWRITTEN: C U.S.S. REDFIN (SS272)]
10 July 1945.
CONFIDENTIAL

20 June 1945

0203 Contact on SJ, probably plane. Verified on SD at
     12 miles. Did not bother us.
0309 Weak contact on APR 155 meg. Could have been JAP sub
     but decided it was search radar on HACHIJO JIMA,
     distance 75 miles.
0400 Increased speed to 3 engine speed.
1200 Position: Lat: 33-40 N.
     Long:142-01 E.
1429 Sighted possible floating mine, position: Lat-34-46 N.,
     Long: 142-27 E. Too rough to play with.
2256 APR contact 155 meg., probably located on HONSHU.

21 June 1945

1200 Position: Lat: 38-05.6 N.
     Long:144-02.0 E.
1604 Submerged to jump one cell in each battery (See
     casualty section).
1927 Surfaced.

22 June 1945

1200 Position: Lat: 42-04 N.
     Long: 144-14 E.
1334 Contact on SD, 3 miles - closing. Visibility poor.
     Submerged.
1408 Surfaced. Lookout sighted 2-engine bomber close
     aboard headed towards.
     Submerged.
     Tested all sound gear. Worked on radar.
1840 Surfaced in heavy fog, visibility 500 yards.
1900 Radar contact on south coast of HOKKAIDO.

23 June 1945 - 29 June 1945

     Period covered in TOP SECRET report.

29 June 1945

2100 Took departure from south coast HOKKAIDO for next area.

-5-
(ENCLOSURE A)

— page 271 —
U.S.S. REDFIN(SS272)
SS272/A4-3/A9
Serial 031
10 July 1945.
CONFIDENTIAL
30 June 1945

1200 Position: Lat: 38-57' N.
Long: 143-53 E.
1930 Sighted floating mine in position: 37-02 N., Long:
143-23.5 E. Wasted two pans of 20 MM at 200 yards.
Finally called our chief yeoman, ex-marine sergeant
HARRINGTON, K.G., to the bridge and exploded it with a
30-30 at 100 yards. All hands impressed by the explosion.
2000 Converted #3 FBT to ballast tank.
2247 Exchanged recognition signals with U.S.S. DEVILFISH.
At her request tried to make contact on VFH.
No success.

1 July 1945

1151 OOD dove for two large unidentified planes approaching
from the south. No SD contact. Probably were search
planes out of IWO JIMA.
1200 Position: Lat: 33-51.0 N.
Long: 140-51.0 E.
1228 Surfaced.
1630 Sighted HIKURA and HACHIJO JIMA to the westward.
1751 Submerged for 2-engine plane closing astern.
2006 Surfaced.
2120 Took departure from INAMBA JIMA for south coast of HONSHU.

2 July 1945 - 6 July 1945

Period covered in TOP SECRET report.

6 July 1945

0500 Received orders to proceed to GUAM for refit.
Changed course to 175 and increased speed to 17 knots.
1200 Position: Lat: 31-42 N.
Long: 138-55 E.

-6-

(ENCLOSURE A)

— page 272 —
U.S.S. REDFIN (SS272)

SS272/A4-3/A9
Serial 031
CONFIDENTIAL                                                    10 July 1945.

6 July 1945 (con't)

1221     Contact with 5 friendly search planes during morning.
2322     Sighted floating mine - exploded same with 20 MM.
2334     Commenced sighting numerous Japan bound B-29's.
2354     Exchanged recognition with U.S.S. BLACKFISH.

7 July 1945

0700     Made dive to test depth.
1200     Position:                               Lat: 26-14.5 N.
                                                Long: 139-17.5 E.

8 July 1945

0134     Exchanged recognition with U.S.S. SCABBARDFISH.
1116     Doubtful periscope sighting by O.O.D., turned away.
         Lat: 21-00 N.; Long: 139-30 E.
1200     Position:                               Lat: 20-51 N.
                                                Long: 139-41 E.

9 July 1945

0134     Exchanged recognition with U.S.S. WHALE.
1200     Position:                               Lat: 17-36.5 N.
                                                Long: 143-46 E.

10 July 1945

1000     Arrived GUAM.

-7-
(ENCLOSURE A)

— page 273 —
SS272/A4-3
Serial 031
CONFIDENTIAL

U.S.S. REDFIN (SS272)
10 July 1945

(C) WEATHER
No unusual weather conditions occurred.

(D) TIDAL INFORMATION
The Japanese current was found to be unusual strong in
the passage between HIKURA JIMA and HACHIJO JIMA, pro-
bably 2.5 knots. Along the south coast of HONSHU a
slight westerly set was found.

(E) NAVIGATIONAL AIDS
No lighted navigational lights were sighted. Aerial
beacons along the south coasts of HONSHU and HOKKAIDO
were sighted. Radar was of great assistance in navi-
gation along coasts.

(F) SHIP CONTACTS
The only ship contacts this patrol except friendly
submarines, were small fishing vessels along the
south coast of HOKKAIDO.

(G) AIRCRAFT CONTACTS
Two medium bombers were sighted over the HOKKAIDO coast
during the morning of 23 June. Two night dives were
made for fast closing SJ contacts on the night of 28 June.
Commanding Officer believes these were PIXIES.

Over South HONSHU numerous aircraft were sighted, most
of them in the afternoon. All were on east or west
courses. A few fighters were noted zooming close to the
water. None of these contacts were considered as anti-
submarine patrol.

(H) ATTACK DATA
Unfortunately there were no opportunities to attack.

(I) MINES
Two rusty floating mines were exploded. Two more were
sighted but we were not in a position to fire on them.
Dates and positions are as follows:-
20 June Lat: 33-40 N.; Long: 142-01 E.
*30 June Lat: 38-57 N.; Long: 143-53 E.
2 July Lat: 34-17.45 N.; Long: 137-32 E.
* 6 July Lat: 32-49 N.; Long: 139-00 E.

(*Exploded) -2- (ENCLOSURE A)

— page 274 —
U.S.S. REDFIN (SS272)
SS272/A4-3/A9
Serial 031
CONFIDENTIAL
10 July 1945.

(J) ANTI-SUBMARINE MEASURES AND EVASION TACTICS

No anti-submarine vessels were encountered. Two air-
craft contacts at night off HOKKAIDO may have been on
anti-submarine patrol.

(K) MAJOR DEFECTS AND DAMAGE

Ordnance and Gunnery:-

1. On 13 June, torpedo #99982 was found to have a
53-31 volt ground which could not be cleared. The ground
was due to metal filings in the tops of 8 cell casings.
This torpedo was transferred to the U.S.S. PROTEUS.

2. On 22 June, torpedo #100016 was found to have a
45-31 volt ground which could not be cleared by ordinary
means. The ground was cleared by jumping out cell #27.

Eng. & Elec:-

1. June 21 a high ground was discovered on cell #84,
after battery. After removing voltmeter leads and
ventilation piping the ground still existed. Cell #84
was then jumped out, also cell 102 in forward battery
(to provide equal number of active cells in each battery).
Cell top was thoroughly scraped to remove any possible
leakage track. Cell #84 was reconnected to battery on
June 29 and high ground had disappeared. Cell #102 was
also reconnected.

2. On the morning of June 27 bow plane tilting operati
was observed to be very sluggish. Upon inspection the
brake disc housing was found to be abnormally hot. It
was assumed that the solenoid was failing to release the
brake. Test showed that the solenoid was short circuited.
The trouble was remedied by replacing brake assembly
with one removed from steering motor. Normal operation
then resumed.

Radio:-

1. The power unit for the CCM failed on 16 June due
to a short circuit between two of the armature coils.
Machine was operated by hand power until replacement
power was received from U.S.S. TORO next day.

-9-
(ENCLOSURE A)

— page 275 —
U.S.S. REDFIN (SS272)

SS272/A4-3/
Serial 031
CONFIDENTIAL
10 July 1945.

(L) RADIO

Reception was normal at all times, and no serial
messages were missed. SIX messages were transmitted,
and all were cleared promptly to NPN or NPN4 on
4235 kilocycles.

(M) RADAR

SJa - ST Casualties:-

6/15/45: SJ Magnetron failed, and due to normal period
of use, and restoration to normal operation when replaced,
failure was believed due to expiration of normal life.

6/19/45: C22B in bias circuit of SJ transmitter failed
and was replaced - Magnetron was noted to be very weak
and was also replaced. Since replacement of magnetron
restored transmitter to normal power, failure of mag-
netron was attributed to poor magnetron.

6/22/45: Magnetron once more failed. Fil.voltage was
found to be intermittent due to bad connection at term
#7 of modulation network. Since fil. voltage on old mag-
netron was still intermittent, modulation network was sus-
pected and so replaced with spare, although this did not
change condition, which was found to be intermittent short-
circuit in this mag.fil. itself. Replaced magnetron and
no further trouble has been encountered in this circuit
during remainder of patrol, so entire mag. trouble is
assumed to have been caused originally by bad connection
at term #7 of mod. net.

7/3/45: Due to loud arcing in PPI Unit inspected H.V. rect.
circuit and found R-45 in this circuit to have failed. Re-
placed with spare part and operation normal.

7/5/45: Due to lack of intensity and poor focus of PPI
replaced cathode ray tube (type 5FP7), this made decided
improvement and restored unit to normal operation.

ST required only occassional tuning. No failures except
mechanical (periscope adaptor & window).

SD Radar - This equipment gave little trouble except for
one set of OSC tubes which had to be changed on July 1st
and some trouble with the "fast disconnect type" mast shoe
which became disengaged from the end connectors of mast
transmission line upon raising of mast and caused SD to be
NOT operating properly, when the operator thought it to be
operating quite normally.

-10-
(ENCLOSURE A)

— page 276 —
SS272/A4-3/A9
Serial 031
CONFIDENTIAL

U.S.S. REDFIN (SS-272)
10 July 1945.

(N) SONAR GEAR AND SOUND CONDITIONS

Sound conditions off South HONSHU the first part of July
were considered good. Off South HOKKAIDO sharp negative
gradients as high as 20 degrees were found between the
surface and 100 feet. Listening conditions were poor.

(O) DENSITY LAYERS

Cards were taken on each dive and will be forwarded to
the Hydrographic Office. Gradients were found to agree
with H.O. Pub. No.231 generally.

(P) HEALTH, FOOD, AND HABITABILITY

Food was well prepared. Health of crew was excellent.
With the present set-up about 15 of the crew are re-
quired to "hot bunk". If two less torpedoes were
carried forward on special and life guard missions,
six of the crew could sleep on mattresses on the skids.

(Q) PERSONNEL:

Number of men detached after previous patrol25
Number of men on board during patrol78
Number of men qualified at start of patrol58
Number of men qualified at end of patrol64
No. of men non-qualified making first patrol12
Number of men advanced in rating this patrol5

(R) MILES STEAMED - FUEL USED

| | Miles | Fuel |
| | Steamed | Used |
| Pearl to Guam| 3834 | 44,620 |
| Guam to Area| 1309 | 17,735 |
| In Area| 3471 | 39,164 |
| Area to Guam| 1300 | 16,200 |
| Totals| 9914 | 117,719 |

(S) DURATION

Days enroute Pearl to Guam11
Days enroute Guam to Area5
Days in Area16
Days enroute to Base5
Days submerged12

-11- (ENCLOSURE A)

— page 277 —
U.S.S. REDFIN(SS272)

SS272/A-3/
Serial 031
CONFIDENTIAL                                                              10 July 1945.

(T) FACTORS OF ENDURANCE REMAINING

Torpedoes | Fuel   | Provisions | Personnel Factor
          |        | Days       | Days
25        | 42,400 | 50         | 15

Limiting factor this patrol - Despatch Orders.

(U) COMMUNICATIONS, RADAR, AND SONAR COUNTERMEASURES

A huge bedspring type radar mast, estimated 80' by 100 ft.
was observed on south coast HONSHU near a prominent peak.
Exact location - Lat: 34-36 N.; Long: 137-09 E.

APR

Date/   | Position | Frequency | P.R.F. | Pulse Width | Remarks
Time    |          |           |        |             |
6/18/45 | 23-52    | 110       | 300    | 12          | Rotating
0430    | 139-39   |           |        |             |
6/18/45 | 25-32    | 210       | 350    | 5           | Rotating -
1200    | 139-39   |           |        |             | Very weak.
6/19/45 | 28-03    | 215       | 75     | 5           | Keying - 30 seconds
0015    | 139-42   |           |        |             | every 3 minutes.
6/20/45 | 32-16    | 160       | 750    | 4           | Strong - Fast sweep
0345    | 140-02   |           |        |             | 5 sec. intervals.
6/20/45 | 35-31    | 153       | 500    | 8           | Very weak - Showed
2240    | 143-11   |           |        |             | at several min.inter.
6/22/45 | 42-45    | 72-80     | 500    | 50          | Very strong and
1900    | 144-22   |           |        |             | steady.
6/22/45 | 42-41    | 92        | 130    | -           | Loud and strong -
2200    | 144-22   |           |        |             | steady.
6/30/45 | 41-30    | 150-153   | 500    | 5           | Sweeping - strong 2½
0140    | 144-7    |           |        |             | minute intervals.
7/1/45  | 35-49    | 68        | 500    | 27          | Steady.
0015    | 142-49   |           |        |             |
7/1/45  | 35-41    | 80        | 500    | 40          | Steady - Believe to
0040    | 142-49   |           |        |             | be land based radar.

-12-
(ENCLOSURE A)

— page 278 —
SS272/AA-3/A9
Serial 031
CONFIDENTIAL

APR (cont.)

Date/ | Position | Frequency | P.R.F. | Pulse | Remarks
Time | | | | Width |
------||||-------|U.

— page 279 —
SUBMARINE DIVISION THREE FORTY ONE
Care of Fleet Post Office,
San Francisco, California,
10 July 1945.

FB5-341/A-18
Serial (04)
CONFIDENTIAL

FIRST ENDORSEMENT to
CO USS REDFIN ltr. SS272/A4-3/
A9) Serial 034 of 7/10/45
Report of War Patrol No. 6.

From:
To :
Via : (1) The Commander Submarine Division Three Forty-One.
      (2) The Commander in Chief, United States Fleet.
      (3) The Commander Submarine Squadron Thirty-Four.
      (4) The Commander Submarine Force, Pacific Fleet.
      (5) The Commander in Chief, U.S. Pacific Fleet.

Subject: U.S.S. REDFIN (SS272) - Report of War Patrol
         Number SIX.

1. The sixth War Patrol of the U.S.S. REDFIN, under
the command of Lieutenant Commander C. K. Miller, U.S. Navy,
was conducted off the south coasts of Honshu and Hokkaido during
the period 30 May 1945 to 10 July 1945. Sixteen days were spent
in the area, during twelve of which a special mission (covered
by separate report) was performed.

2. Although practically the entire time on station
was spent close to enemy shores there were no contacts worthy
of torpedo fire.

3. On 19 June while making 3 engine speed in a state
4 sea the bow clearing cables fouled and cleared the bow cleat
several times making it impossible to rig out the bow planes
when the cables were in the fouled condition. This is obviously
a hazard to safe operation. It is recommended, therefore, that
the bow cleats of all boats rigged with clearing cables similar to
the REDFIN be removed at the first opportunity.

4. On her return from patrol the REDFIN was clean,
shipshape and in very good material condition. Refit will be
accomplished in the twelve days assigned.

5. The Administrative Division Commander congratulates
the commanding officer, officers, and crew on the completion of
their special mission, and regrets that the REDFIN had no oppor-
tunity to inflict damage on the enemy.

[SIGNATURE: J. W. BLANCHARD]
J. W. BLANCHARD.

— page 280 —
SUBMARINE SQUADRON THIRTY-FOUR
(Yg)

FC5-34/A16-3
Care of Fleet Post Office,
Serial ( C19 )
San Francisco, California.
11 July 1945.
C-O-N-F-I-D-E-N-T-I-A-L

SECOND ENDORSEMENT to CO USS
REDFIN ltr. SS272/A4-3/A9
Serial 031 of 10 July 1945.

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

Subject: U.S.S. REDFIN (SS272) - Report of War Patrol Number SIX.

1. Forwarded, concurring in the remarks made by the Commander
Submarine Division THREE HUNDRED FORTY-ONE.

2. The Commanding Officer, officers and crew of the REDFIN are
heartily congratulated for having successfully completed a very important
mission.

E. W. GRENFELL.

— page 281 —
FF12-10(A)/A16-3(18)
Serial: 01838
[STAMP: CONFIDENTIAL]
THIRD ENDORSEMENT
REDFIN Report of
Sixth War Patrol.

SUBMARINE FORCE, PACIFIC FLEET
Care of Fleet Post Office,
San Francisco, California,
24 July 1945.
NOTE: THIS REPORT WILL BE
DESTROYED PRIOR TO
ENTERING PATROL AREA.
[HANDWRITTEN: mr]

From: The Commander Submarine Force, Pacific Fleet.
To : The Commander in Chief, United States Fleet.
Via : The Commander in Chief, U.S. Pacific Fleet.
Subject: U.S.S. REDFIN (SS272) - Report of Sixth War Patrol
(30 May to 10 July 1945).

1. The sixth war patrol of the REDFIN, under the command of Lieutenant
Commander O. K. Miller, U.S. Navy, was conducted in the area off the Southern
Coast of Honshu and Hokkaido.
2. This patrol was devoted to a special mission which was carried
out by the REDFIN in a skillful, efficient manner. The special mission is the
subject of a separate report.
3. Award of Submarine Combat Insignia for this patrol is authorized.
4. The Commander Submarine Force, Pacific Fleet, congratulates the
commanding officer, officers, and crew of the REDFIN for the successful completion
of this important, hazardous, special mission.

DISTRIBUTION:
(Complete Reports)
Cominch (7)
CNO (5)
Cincpac (6)
JICPOA (1)
AdICPOA (1)
Comservpac (1)
Cinclant (1)
Comsubslent (1)
S/M School, NL (8)
CO, S/M Base, PH (2)
Comsspae (1)
Comsub7thFlt (Fwd Echelon) (2)
Comsub7thFlt (Rear Echelon) (2)
Comserpac (1)
Comsubspa (3)
ComsubspaAdCond (40)
SUBAD, NI (2)
ComsubspacSubordcom (3)

[STAMP: MERRILL COMSTOCK,
Deputy.
RECEIVED S-C FILES
23 Room 2055
DATE REC'D 2 AUG 1945
BY]
[HANDWRITTEN: FILE NO. (00) A16-3(23)/S-272
180953]

All Squadron and Div. (2)
Commanders, Pacific (5)
ComSubOpTraGrBalboa (2)
Substrainpac (2)
All Submarines, Pacific (1)
[SIGNATURE: H. L. Giller]
E. L. HYNES, 2nd,
Flag Secretary.

— page 282 —
[HANDWRITTEN: c/o Fleet Post Office]
[HANDWRITTEN: San Francisco, Calif.]
[HANDWRITTEN: 2nd Copy]
[TYPED: 5 September 1945.]

[TYPED: SS272/A16]
[TYPED: Serial 0101]
[STAMP: DECLASSIFIED]
[TYPED: CONFIDENTIAL]

[TYPED: From:]
[TYPED: To :]
[TYPED: Via :]

[TYPED: The Commanding Officer.]
[TYPED: The Commander-in-Chief, United States Fleet.]
[TYPED: (1) The Commander Submarine Division]
[TYPED: (2) The Commander Submarine Squadron]
[TYPED: (3) The Commander Submarine Force, Pacific Fleet.]
[TYPED: (4) The Commander-in-Chief, U.S. Pacific Fleet.]

[TYPED: Subject:]
[TYPED: U.S.S. REDFIN(SS272) War Patrol No. 7 -]
[TYPED: Report of.]

[TYPED: Enclosures:]
[TYPED: (A) Subject Report.]
[TYPED: (B) Track Chart.]

[TYPED: 1.]
[TYPED: Enclosure (A), covering the 7th war patrol of]
[TYPED: this vessel conducted in the EAST CHINA SEA area during the]
[TYPED: period 30 July, 1945 to 5 September 1945, is forwarded here-]
[TYPED: with.]

[SIGNATURE: C K Miller]
[TYPED: C. K. MILLER.]

[STAMP: DECLASSIFIED-ART. 0445, OPNAVINST 5510.1C]
[HANDWRITTEN: BY OP-09X DATE 6/1/72]

[STAMP: DECLASSIFIED]

[HANDWRITTEN: FILMED]
[HANDWRITTEN: 138975]

— page 283 —
U.S.S. REDFIN(SS272).
c/o Fleet Post Office,
San Francisco, Calif.

5 September 1945.

SS272/A16
Serial 0101

CONFIDENTIAL

Subject: U.S.S. REDFIN(SS272) War Patrol No.7 - report of.

— page 285 —
U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 0101
5 September 1945.

CONFIDENTIAL

Subject: U.S.S. REDFIN(SS272) War Patrol No.7 - report of.

5 August 1945 (con't)

Just as we were backing clear received a greatly appre-
ciated bag of air mail.
1130 Joined up with escort and proceeded to rendezvous point.
1530 Rendezvoused with U.S.S. SHAD. Stoodby while Shad trans-
ferred patient to escort.
1600 Proceeding up safety lane with U.S.S. SHAD.

6 August 1945

1200 Position: Lat: 18-37 N. Long: 142-30 E.

7 August 1945

1200 Position: Lat: 22-37 N. Long: 139-55 E.
Commenced having considerable trouble with moisture
collecting in refrigeration system. There was some
doubt if we could save our meat supply so started
serving the best cuts twice a day.

8 August 1945

1200 Position: Lat: 27-50 N. Long: 139-56 E.
1300 Parted company with U.S.S. SHAD.

9 August 1945

1100 Received U.S.S. BLACKFIN'S message concerning positive
periscope sighting 200 miles ahead on our track. Altered
course to pass 20 miles south of sighting point.
1200 Position: Lat: 29-25 N. Long: 135-15 E.

10 August 1945

0557 Submerged in COLETT STRAIT. Spent remainder of day
proving there is a 2.0 knot easterly set through the
pass.
1200 Position: Lat: 30-06 N. Long: 130-14 E.
1800 Set clocks one hour back to -9(I) time.
1940 Surfaced 8 miles from diving point.
2005 Exchanged calls with U.S.S. PIPE who is following us
through pass.

-3-

— page 286 —
U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16
Serial 0101

CONFIDENTIAL

5 September 1945.

Subject: U.S.S. REDFIN(SS272) War Patrol No.7 - report of.

— page 287 —
U.S.S. REDFIN (SS272)
c/o Fleet Post Office
San Francisco, Calif.

SS272/A16
Serial 0101

5 September 1945.

CONFIDENTIAL

Subject: U.S.S. REDFIN (SS272) War Patrol No.7 - report of

13 August 1945

0000 Bothered by numerous friendly planes who insist on
     closing to 4 miles before showing friendly and numerous
     phantom SJ pips. War isn't what it used to be.
0457 Submerged.
0615 Set watch on MATD. Numerous contacts during day.
     Seven (7) good contacts plot along the 80 fathom curve.
     Initial ranges varied between 200 and 600 yards. All
     contacts easily avoided.
1200 Position: Lat: 31-28 N. Long: 129-59 E.
1815 Secured MATD. 13 hours of mine detecting in one day are
     sufficient. We are fortunate to have an excellent
     operator, T.M. WANN, SoMlc, on board. The fact that he
     is a student of the ministry contributes somewhat to
     the peace of mind of the Commanding Officer.
1946 Surfaced.

14 August 1945

0445 Submerged.
0450 Set watch on MATD. Our general plan the last few days
     has been to sweep 30 degrees on each bow with automatic
     reversing gear, using the QB keel-mounted head. By remaining
     at periscope depth with one degree up angle we believe
     we have the most favorable conditions for mine detecting.
     Take out every half hour and sounding every 15 minutes
     to check position.
0545 Contact 200 yards near 80 fathom curve.
0616- Seven (7) good contacts along 80 fathom curve.
0837
0924- Four (4) more good contacts.
0932 Depth 74 fathoms.
1030 Two (2) good contacts; depth 80 fathoms. Some
1350 Six (6) more contacts; depth 80 fathoms. Some
     difficulty in avoiding all of them. Two were picked
     up at 175 yards range.
1400 Changed course to 270 T. to clear this area. There is
     no doubt in my mind that the 80 fathom curve north of
     Lat. 31-26 is mined. We crossed this curve six times
     at intervals of at least one mile. Twenty-eight ex-
     cellent contacts were made, usually five or six at one
     time, indicating two or perhaps three rows of mines.
     If future information proves these are not mines the MATD
     should be considered as an unreliable mine detector.

-5-

— page 288 —
U.S.S. REDFIN(SS272)
c/o Fleet Post Office
San Francisco, Calif.

SS272/A16
Serial 0101

CONFIDENTIAL

Subject: U.S.S. REDFIN(SS272) War Patrol No.7 - report of.

**5 September 1945.**

SS272/A16
Serial 0101

CONFIDENTIAL

Subject: U.S.S. REDFIN(SS272) War Patrol No.7 - report of.

— page 289 —
U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

SS272/A16                                                5 September 1945
Serial 0101

CONFIDENTIAL

Subject: U.S.S. REDFIN(SS272) War Patrol No.7 - report of.

29 August 1945

0830 Took departure from Japanese homeland and headed
       for rendezvous with U.S.S. CATFISH, U.S.S. SEADEVIL,
       and U.S.S. BLACKFIN.
1200 Position: Lat: 32-09 N.Long: 127-12 E.

30 August 1945

0720 Sighted shears of three submarines - bearing 230 T.
0800 Effected rendezvous, took station in formation.
1200 Position: Lat: 28-08.5 N. Long: 123-58 E.

31 August 1945

1200 Position: Lat: 22-31 N. Long: 126-22 E.
1735 Sighted and passed well clear of northbound convoy
       of at least 15 ships.
1800 Barometer dropping, seas building up. All indications
       pointed to a typhoon.

1 September 1945.

0022 Finally slowed to one-third speed.
0800 Gave up attempt to stay in formation. Tried
       various speeds to ride out the typhoon. By
       making 90 turns we had rudder control and could
       keep the bow headed into the sea. Took very little
       water down the hatch. The wind was 50 to 60 knots,
       seas from 20 to 40 feet high. We were very satis-
       fied with the manner the Redfin took the weather.
1200 Position: Lat: 20-28 N. Long: 127-15.4 E.

2 September 1945

0924 Sighted another northbound convoy. Notified DE by
       light that 2 more submarines were somewhere astern
       of us.
1000 Increased speed to 6 knots.
1200 Position: Lat: 19-48.3 N. Long: 128-07.1 E.
1700 Rejoined CATFISH and BLACKFIN.

— page 290 —
U.S.S. REDFIN(SS272)
c/o Fleet Post Office,
San Francisco, Calif.

5 September 1945.

SS272/A16
Serial 0101

CONFIDENTIAL

Subject: U.S.S. REDFIN(SS272) War Patrol No. 7 -
Report of:

— page 291 —
U.S.S. REDFIN (SS272)
c/o Fleet Post Office
San Francisco, Calif.

SS272/A16
Serial 0101

5 September 1945.

CONFIDENTIAL

Subject: U.S.S. REDFIN(SS272) War Patrol No. 7 - report of.

(C) WEATHER
Excellent weather conditions prevailed in the EAST
CHINA SEA during August. The TOKYO TYPHOON which
delayed allied landings cause only slight discomfort.

(D) TIDAL INFORMATION
Currents conformed to charts. Exceptionally strong
counter currents were found close to the beach of
southwest KYUSHU.

(E) NAVIGATIONAL AIDS
At evening twilight, 26 August OSE SAKI LIGHT was
turned on with its normal characteristics and power.

(F) SHIP CONTACTS
One unidentified small ship, probably a submarine was
contacted at 0450, 11 August in position Lat: 31-25 N.
Long: 124-52 E. Initial range 8300 yards, target
course 200, speed 10.

(G) AIRCRAFT CONTACTS
All friendly.

(H) ATTACK DATA
No comments.

(I) MINES
Four (4) drifting mines were exploded.

(J) ANTI SUBMARINE MEASURES
No comments.

(K) MAJOR DEFECTS AND DAMAGE
Refrigeration Unit:- On the first day out of Guam, the
ice box and coolroom temperatures suddenly rose causing
the unit to cycle continuously. The system was recharged
with freon with no noticeable improvement. Further in-
vestigation revealed that salt water had penetrated the

— page 292 —
SS272/A16
Serial 0101
CONFIDENTIAL

U.S.S. REDFIN (SS272)
c/o Fleet Post Office
San Francisco, Calif.

5 September 1945.

Subject: U.S.S. REDFIN(SS272) War Patrol No. 7 - report of.

(K) MAJOR DEFECTS AND DAMAGE (con't)

entire system including the compressor, through a leak,
probably in the condenser, which rendered the unit in-
operative. The Orion replaced the condenser and com-
pressor, and at time of departure the unit was operating
satisfactorily, at an ice box temperature of 20 degrees
F. Throughout the remainder of the patrol moisture re-
maining in the system continued to cause trouble and
only constant attention of the ship's force kept it in
operation.

(L) RADIO

Reception was uniformly excellent. Schedules were easily
copied at 52 feet. The news that the war was ended was
first received at 50 feet direct from San Francisco.

(M) RADAR

Good performance with no casualties worthy of comment.

(N) SONAR AND SOUND CONDITIONS

Performance of the MATD as a mine detector is considered
satisfactory. Initial ranges of contacts varied from
600 to 175 yards. The other mine detecting device installed
in this vessel, the OL, was not used.

(O) DENSITY LAYERS

No comments.

(P) HEALTH, FOOD, AND HABITABILITY

Excellent.

(Q) PERSONNEL

(a) Number of men transferred after previous patrol.... 10
(b) Number of men on board during patrol78
(c) Number of men qualified at start of patrol53
(d) Number of men qualified at end of patrol68
(e) Number of non-qualified men making first patrol... 7

-9-

— page 293 —
U.S.S. REDFIN (SS272)
c/o Fleet Post Office
San Francisco, Calif.

SS272/A16
Serial 0101                                                 5 September 1945.

CONFIDENTIAL

Subject: U.S.S. REDFIN (SS272) War Patrol No. 7 - report of.

(R) MILES STEAMED                                          FUEL USED

                                                Miles           Fuel
    Guam to Area, via Saipan.....               2,773           36,975 gal.
    In Area                3,974           37,411 "
    Area to Guam                1,700           25,500 "
                                                -
                                  Total         8,427           99,886

(S) DURATION

    Days enroute to Area       12
    Days in Area       20
    Days enroute Base       5
    Days submerged       12

(T) FACTORS OF ENDURANCE REMAINING

    Torpedoes           Fuel           Provisions Days     Personnel Factor
    All                 25,000 gal.    40                  30

(U) COMMUNICATIONS, RADAR, AND SONAR COUNTER-MEASURES

    All APR contacts agreed with those previously listed
    in this area by other submarines.

(V) REMARKS

    None.

-10-

— page 294 —
SUBMARINE DIVISION THREE HUNDRED SIXTY TWO

FB5-362/A16-3
Serial: (0100)

Care of Fleet Post Office,
San Francisco, California,
6 September 1945.

S-E-C-R-E-T-I-A-L

FIRST ENDORSEMENT to
USS REDFIN - Report of
War Patrol No. 7, ser. 0101
dated 5 September 1945,

From: The Commander Submarine Division THREE HUNDRED
SIXTY-TWO (ADMINISTRATIVE COMMAND).
To : The Commander in Chief, UNITED STATES FLEET.
Via : (1) The Commander Submarine Squadron THIRTY-SIX.
(2) The Commander Submarine Force, PACIFIC FLEET.
(3) The Commander in Chief, U.S. PACIFIC FLEET.

Subject: U.S.S. REDFIN (SS272) - Report of War Patrol
Number NINE.

1. The seventh war patrol of the U.S.S. REDFIN was
conducted in the East China Sea area. The patrol was of
thirty-seven days duration in which twenty days were spent
in the area.

2. One small ship, possibly an enemy submarine, was
contacted but soon lost. No opportunity presented itself for
life guard rescue. A moored mine field was found and inspec-
ted. Four drifting mines were exploded.

3. The Administrative Commander of Submarine Division
THREE HUNDRED SIXTY-TWO congratulates the officers and the
crew on the completion of this patrol and their return clean
and shipshape. Voyage repairs will be made and major defects
corrected.

[SIGNATURE: UNCLEAR]
D. F. WILLIAMS.

— page 296 —
[HANDWRITTEN: ALL MATERIAL]
[HANDWRITTEN: ON THIS FICHE]
[HANDWRITTEN: HAS BEEN]
[HANDWRITTEN: DECLASSIFIED]
[HANDWRITTEN: ---]
[HANDWRITTEN: ---]
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— page 299 —
SUBMARINE SQUADRON THIRTY SIX

F05-36/A16-3                                Care of Fleet Post Office,
Serial: 067                                 San Francisco, California,
                                            6 September 1945.
C-O-N-F-I-D-E-N-T-I-A-L

SECOND ENDORSEMENT to
U.S.S. REDFIN (SS272) -
Report of War Patrol
Number Seven.

From:       Commander Submarine Squadron THIRTY-SIX.
To   :      The Commander-in-Chief, United States Fleet.
Via  :      (1) The Commander Submarine Force, Pacific Fleet,
                Administration.
            (2) The Commander-in-Chief, U.S. Pacific Fleet.

Subject:    U.S.S. REDFIN (SS272) - Report of War Patrol
            Number Seven.

            1. Forwarded, concurring in the remarks of Commander
Submarine Division THREE HUNDRED SIXTY-TWO.

            2. The Administrative Squadron Commander congratulates
the Commanding Officer, officers and crew of the REDFIN upon the
completion of a well conducted patrol and the location of a mine
field.

[SIGNATURE: Jesse L. Hull]
JESSE L. HULL

— page 300 —
[HANDWRITTEN: 2ND Copy]
SUBMARINE FORCE, PACIFIC FLEET
Care of Fleet Post Office,
San Francisco, California,
11 September 1945

FF13-10/A16-3 Rf
Serial 0305

CONFIDENTIAL

THIRD ENDORSEMENT to
REDFIN Report of [HANDWRITTEN: 187387] NOTE: THIS REPORT WILL BE
SEVENTH WAR PATROL. DESTROYED PRIOR TO
ENTERING PATROL AREA.

COMSUBSPAC PATROL REPORT NO. 904
U.S.S. REDFIN - SEVENTH WAR PATROL.

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

Subject: U.S.S. REDFIN (SS272) - Report of Seventh War Patrol
(30 July to 5 September 1945).

1. The seventh war patrol of the REDFIN, under the command of
Lieutenant Commander C. K. Miller, U.S. Navy, was conducted off the West
Coast of Kyushu.

2. The patrol was divided into two phases, the first phase being
a mine survey of certain designated areas, while the second phase was a
lifeguard mission carried out after the termination of hostilities. Only a
part of the assigned area was searched for mines prior to the discontinuance
of this mission. The REDFIN had numerous contacts on her sound equipment
which she believed to be mines. The area concerned has not as yet been
swept by our own forces.

3. The award of the Submarine Combat Insignia for this patrol is
authorized.

4. The Commander Submarine Force, Pacific Fleet congratulates
the Commanding Officer, officers and crew of the REDFIN for the completion
of this patrol and the accomplishment of the assigned special mission.

[STAMP: OFFICE of the CHIEF of NAVAL OPERATIONS
FLEET MAINTENANCE
2 - OCT 1945
RECEIVED
NAVY DEPARTMENT] C. A. LOCKWOOD, Jr.

DISTRIBUTION:
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Comsubs7thFlt (Fwd Echelon) (2) | [SIGNATURE: J. F. Auer]
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