U.S.S. SEAHORSE (SS-304) — war patrol report SS-304_SEAHORSE_Part2.pdf

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|Sub||bject:|.: U.S.S. SEAHQRSER - Report of Third War Patrol.|
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some of us are not able to fully utilize our great tactical advantage over the enemy.

The SD radar is still a menace. It picks up high flying planes at good ranges, but the Japs have stopped flying all their planes where the SD will detect them. We were not bombed on this patrol, nor particularly bothered by enemy aircraft, but the possibilities in the future are of current concern. The enemy convoy trailed from Jan. 28th until the morning of February lst maintained continuous air coverage during daylight. The weather was good and our lookouts were able to spot the planes on the horizon before they sighted us. If the visibility had been poor, as is common in the PALAU area, and the enemy planes had been equipped with radar, we would not have been able to keep our contact over so long a period, to say nothing of the damage we might have sustained from a close bombing. In addition to this, we should anticipate night radar equipped planes off important enemy bases. It is coming, and soon. The SD radar is worthless in combatting this type of anti-submarine activity. If a radar is available that will pick up the low flying planes, we will gladly accept a 600' conical blind spot overhead. The SD radar has received much verbal abuse, but as yet the operating submarines have no assurance that it is going to be improved or replaced in the very near future. All of us have been lucky in the past, and haven't been too alarmed over the situation. It is believed the day is very near when many of us are going to run out of our luck due to inferior plane detecting equipment and radar equipped enemy aircraft. Every effort should be made to combat this inevitable menace now.

SUBJECT:

.J.S.S. SEAHQRSER

**SJ RADAR CASUALTIES**

**Jan. 6**

450 volt supply to PPI scope failed. Rewired rectifier in the pump room to remedy trouble. Hours operation since refit - 47.

**Jan. 8**

Double sweep appeared on screen varying with the amount of gain used. Replaced one 5U4-G rectifier tube in the regulated rectifier "B" unit. Hours operation since refit - 74.

**Jan.** **21**   Voltage in regulated rectifier "A" failed. Replaced two 5U4-G rectifier tubes. Hours operation since refit - 126.

**Jan. 22**   A.C. (llyv) supply to H.V. rectifier failed. Found corroded connection in main control unit and repaired. Hours operation since refit - 126.

ENCLOSURE (A)

#### (/)
()

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0: 0
:

Subject: U.S.S. SEAHORSE - Report of Third War Patrol.

(K) MAJOR DEFECTS
HULL:

1. Main Induction Valve Gasket:

Upon making a trim dive January 18, the induction piping began to flood rapidly. After surfacing it was discovered that the gasket for the 36th outboard induction valve had pulled out in two places. The surface of the gasket had apparently gummed up sufficiently to stick to the valve seat when the induction was opened after the previous dive. Repairs were effected by cementing the gasket back into its groove, and cleaning all foreign matter off its surface with emery cloth. Hand operation was used for opening the valve until it had been positively determined that the gasket was securely cemented in its groove. In order to prevent a reoccurrence of this incident, a routine inspection of the valve seat and gasket was made after each surfacing, at which time the valve seat was soaped and the gasket surface cleaned as necessary. It is believed that any possible recurrence of this gasket failure will be eliminated by the accomplishment of Shipalt SS/SI6-2(815) SS/S38 of Nov. 28, 1943, which provides for installation of T-shaped molded gaskets with retaining rings in exterior hatches, doors, and outboard induction valves. It is also believed that the new gasket should be made from neoprene instead of rubber, as is the present one.

2. Circulating Water Line for Air Conditioning System:

Two small leaks appeared in the air conditioning circulating water line on the suction side of the pump, apparently due to premature deterioration of the piping. Repairs were effected by applying an improvised soft patch. This piping, which is supposedly made of a copper nickel alloy, is obviously faulty. The entire circulating water system should be carefully inspected and hydrostatically tested during the next refit and all faulty piping renewed.

3. No. 4A and 4B Fuel Ballast Tank:

The oil did not equalize in the two sides of this tank, and water started coming through the filling and transfer line while 8,000 gallons of glue remained in No. 4B. In order to get this oil out of the tank it was necessary to drain it out of the inboard vent connection from No. 4B vent riser into

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月月 安检: U.S.S. SEAHORSE - Report of Third Var Patrol.

TORPEDO ATTACK NO. 9

Tubes Fired 7 9

Track Angle 77 S 79 S

Gyro Angle 196 189

Depth SET 10' 10'

Power ..

Hit or Miss Hit Hit

Eyratic No No

Ek. Torpedo 18 18

Serial No. 53563 53588

Mk. Explder ... .4-2 4-2

Serial No. 16612 16507

Actuation Set Contact Contact

Actuation Act. Contact Contact

Mk. Varhead 18 18

Serial No. 696 664

Explosive TPX TPX

Firing 0 24

Type Spread: Divergent

Sea Conditions: Northeast Four

Overhaul Activity: -  Submarine Base, Pearl Harbor

-39- ENCLOSURE (A)

+40+

— page 9 —
0200 ( 1) DATE: 2 F:,b1ary 1.45a: 04.-32N LONG. I13-02~■

## ~·-
```
                  TARGET DATA
     DESCRIPTION: Same as for attack '7.

```
SHIP (s) SUNC .;. `None `.

SHIP (s) DAi 0 ED. `None `.

TARGET DRAFT : `27`° COURSE: 05601 T . ' SP£ED: `8. .` Kts . `R° £G .: 1.-1OO `.'-isJ`

`O'I{N SHIP DATA`

SPEED: `4 Knots· COURSE:` 2IOAThd;:. D ~~ p"pu sc 6n Piciali:: S11 G. `00` .

FIRE CONTROI DATA

`TYPE` `ATTACK:` `Night` Surfacho radar attack` ",ith` TBT` bearings-, : radar
```
                ranges, and `TDC. Using continuous bearing method.L

```
-36- `ENCLOSURA` (A ) `?7`

-

— page 10 —
SUMMARY OF HIS ORIGINAL REPORTS
-
 TORPEDO ATTACK NO. 7
-
 Tubes Fired 7 8 9 10
 Track Angle 53 S 57 S 53 S 58 S
 Gyro Angle 191.5 195.4 191.5 196
 Depth Set 10' 10' 10' 10'
 Power -- - - -
 Hit or Miss Miss Miss Kiss Kiss
 Erratic No No No No
 Mk. Torpedo 18 18 18 18
 Serial No. 53652 53586 53599 53644
 Mk. Exploder 4-2 4-2 4-2 4-2
 Serial No. 16581 16622 16655 16574
 Actuation Set Contact Contact Contact Contact
 Actuation Act. 18 18 18 18
 Serial No. Seria 495 559 470 671
 Explosive TPX TPX TPX TPX
 Firing Int. 0 9 15 19
 Type Spread Divergent
 Sea Conditions Northeast Four

---

Overhaul Activity: Submarine Base, Pearl Harbor.
---

Remarks: Misses were caused by targets zigging away immediately after firing.

— page 13 —
3149 ( 1 ) DATE: 30 January 1944 LAT: 06-10 LONG: 138-l4E

TARGET DATA

DESCRIPTION: 3 unidentified AK's in company with five small

escorts patrolling station two on port side, two
on starboard side and one astern.

SHIP (s) SUNK: 1 unidentified 7,500 Ton AK

DATAQE DETERRM INED BY: 3 hits were observed and heard from the

bridge. Target " 1 grating blue. The bow rose

high in the air and target sank quickly.

TARGET DRAFT: 28• COURSE: 1550 T. SPEED: 6 kts. RANGE: 2700 Yds .

OWN SHIP DATA

SPEED: 15 Kts. COURSE: 250° T. DEPTH: Surface ANGLE: "°.

F IE CEONTROL DATA

T yPE ATT A CK: Night surface radar attack to TBT bearings, ra
ranges and TDC. Using "continuous bearing method.

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— page 14 —
L. S .  SEAHORSE - Report of Third War Patrol.

TORPEDO ATTACK NO. 5

Tubes Fired  8  -  10

Track Angle   90 P  90 P

Gyro Angle   +180.5  180

Depth Set   10'  10'

Power

— page 15 —
2324-9

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YAT W A T

TARGET DATA

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— page 17 —
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## TABLE OF

\-|

PERIOD ATTACK NO. 4

DATE: 21 January 1944 LAT.: 03-19N LAT.: 137-02E

: Same as for Attack No. 3.

--2418

7800

FIRE CONTRO

— page 20 —
9 t Laura . Neleadau Aaa-

Ans.

4 & d=> Title 5
Track Angle 5 6

Gyro Angle O03 002.5 002.3

Depth Set 10' 10110'101'

Power Hiraird TR Tocht Fr Unf

Hit or MISS HiV Hi2 Hii
I'lifc

Certain NO NO

Mk. Torpedo 14-3A 14-3A 14-3A

Serial No. 40169 39219 25720

Uk. Explorer 6-4 6-4 61-

Serial No. 12790 12392 17654

Factor Sr Hoc ccontrolcontuact ccontrolcontrol

Seb hotek dt Hnabtoc No
**Me Ca&sean** 16 16 16

Serial n UCS 11116 2040 2726
Explosive r020 rrz fxrrz

Firing Int. 0 7 12

Type Spread Different (appll. ei Ib)
Sea Condition 5W 5W 5W [4]

OVERCalc Submarine Base, Pearl Harbor

_4~
Remarks: Torpedo fr om Tibfo passed ahead of target aliil ci and
atnar MI the first

-25~ E N C L O S U R E ( A l

— page 21 —
2 : U. S. S. SEAHORSE -  Report of Third War Patrol.

TORPEDO ATTACK NO. 2

TIfE: 2137 - 9) DATE: 21 January 1944 LONG.: 03-19N LAT.: 137-02E

TARGET DATA -  DAMAGE INFLICTED

DESCRIPTION: 1 AK similar to ADSTANCK MRTU, 5,850 tons and 1 AK similar to MACASSAR MARU, 4,000 tons in company with three escorts of the PC or Trawler type, Contact was made by high periscope watch while on surface. Visibility at time of attack was good.

SHIP (s) SINK: 1 AK similar to MACASSAR INETAR, 4,000 tons.

SHIP (s) DAMAGED: 1 AK similar to ADSTANCK IINTR, 5,850 tons.

DAMAGE DETERMINED BY: Observed and heard one hit in large target. Seven seconds later heard second hit. Twenty seconds later observed and heard third torpedo Hit ScocoL* ship after missing and passing ahead of large target. Second target was seen frm the bridge as it sank.

TARGET: ATLANTIC NMIU DRANT: 27' COURSE: 1370 T SPCD: 9K.

RANGE: 2,SOO YARDS.

MACASSAR NSIN: (3R4 TO-CHANGE: T) COURSE: 1370 T SPED: 9 K RANGE:

3600 YAs.

OWN SHIP DATA

SPEEB: 12.3 KNOTS COURSE: 225' T. DEPTH: Surface ANGLE: OO,

FftE CONTROL DATA

Type Attack: Night surface radar attack with TBT‘ beartrg, radar ranges, TDC, anr 'continuous beating method'.

21

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ENCLCJURCl EE (A)

— page 22 —
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— page 29 —
1-M SEC~ORSRE - Report of Third 1Tar 1 Fuller. s. S hort. en.

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— page 35 —
0523 Approaching diving point at slow speed with SJ radar out of commission. Sound reported pinging bearing 350° relative. Changed course 30° to the right and continued in.

: 0537 Dived in position. Pinging much louder.,Nothing in sight. Visibility very poor.

**: 0607 Sighted two PC type patrol craft on course 070° T. SEAHORSES passed between. Only one was pinging. Stayed at periscope depth to observe and when range had opened to 4000 yards headed in their direction in hopes they were going to rendezvouswith incoming convoy.

**: 0804 Sighted two large sampans.One range about 1500 yards Second one about 3000 yards. Both were underway and a nuisance for the rest of the morning due to the fact that every periscope exposure found them in our vicinity and prevented using more than a few feet of periscope in the prevailing smooth sea.

**: 1019 Sighted smoke bearing 0200 T.(3 separate sources) Commenced approach but it was soon apparent ![text not legible](text not legible) ships were coming down from north and were close to reef. Could not here sufficiently to see tops. One two engine bomber and one zero type float plane were observed maintaining air cover.

: 1114 Heard one distant depth charge. 1207 Heard two distant depth charges. 1300 Sighted smoke. 1327 Heard pinging and sighted a large converted yacht type patrol craft. Patrol boat was on course 130, speed 10 knots. We decided to trail him and meet an incoming convoy.

**: 1858 Surfaced and headed out on last bearing of patrol boat. Had spent entire day withinconning tower littered with SJ radar parts and technicians. The radar was still out of commission upon surfacing. Decided to continue on WEWAK - PALUA mine until day-light in hopes of running into [text not legible](text not legible) convoy.

**: 26 January 1944 Making progress on radar repairs. Expect to have it in commission tonight. Maintaining surface high power periscope patrol across shipping lanes south-east of PALAU pending completion of repairs.**

01/

— page 36 —
1-5-c

DATE_DIF_ = '1944-01-22'

THIS_DATE_DIF_

DATE_DIF_ = "$ -03-00$

DATE_DIF_ = '1944-01-25'

DATE_DIF_ = '01-26-12'

B: 162 2163 . 0

4

COPYRIGHTNOTES

563

1944-01-25

— page 37 —
45612345* 643 1234: 45612345* 3643 1 S. S. SEAHORSE - Report of Third War Patrol.

reported that all torpedoes had run slightly to the left of the target. The ship was still afloat on an even keel, although pretty low in the water, so we decided to let him have a couple of Mk. Eighteens. The escort had chased down the last pair of torpedoes and was dropping depth charges at a range of 6300 yards (approximately where the end of the run should have been). The other two escorts were still missing, and the only explanation we have is that they simply did not know the convoy had been hit, and continued on their way.
# It was extremely difficult to determine the angle on the bow with the target so low in the water. We finally resorted to going around the target in an effort to increase his effective length, and in being successful realized that we had fired on too sharp a track.
Regretting the waste of precious torpedoes, we were determined to make the stern attack successful. Came in towards target to range of 3400 yards and reversed course. We then backed down until the range was 2250 yards, and commenced shooting. Did not want to go in closer, as we were in a rather precarious position with stern way on in case we were sighted and fired upon.

2320 SmallEST SHIP was seen to sink stern first.
2324 Fired tubes8 and 10. All ahead full.
2326 At exactly the correct time (to the second) the first torpedo struck just abaft the stack. The target blew up and burst into flame. With the target brilliantly illuminated, the second torpedo hit forward of the bridge and the ship immediately sank. After she went down explosions were seen on the surface of the water, obviously gasoline drums exploded. During our retirement and for over an hour, the surface of the water where the target had sunk was a mass of burning gasoline. All hands were given an opportunity to witness the spectacular show and enjoy the unique experience of "below-decks-men" actually seeing the results of their work. We were particularly careful to obtain the time of run in order to check the performance of the mark eighteen torpedoes, and now have every confidence in them. They both ran absolutely true at their

— page 38 —
2123

range: 2900 yards
seahorse
in
embarra
ssing
posi
tion
under
fairly
good
visibility
conditions.
we
revers::
course
and
opened
out
to
4500
yards
and
came
in
again
to
attack.
it
was
imposs
ible
to
use
divid
ed
fire
on
two
targets,
so
we
decid
ed
to
pick
them
off
s::

225

2228

20

314

147

1543

200

<sup>1</sup>

<sup>2</sup>

<sup>3</sup>

2137

Commoneed firing tubes 4, 5 and 6, torpedo run 2800
yards. The second ship was in line of bearing just
to the left of our target, range 3600 yards, course
unknown due to the fact that we were tracking only
the target during firing run.

2148

Two hits observed in target. About 20 seconds later
third torpedo was seen to hit far ship in stern.
The Japs were no more surprised than in., as ve en-
tertained no hopes whatever of hitting second ship
with first salvo. Both targets stopped and com-.
meneed firing their deck guns in every direction.
No splashes were seen. Escort commenced dropping
random depths charges.

in this work we should.

2200

range 2900 yards
setts glaze 450
standard
approach. the target

i

2500

over
artillery multiple
tillery 1600

ranging

ships

fire
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— page 40 —
1800 yards the gun appeared to be the real lty. (in position Lat. 90-45'-45'N. Long. 148-30' 150". and was extremely difficult to See against the packi ground. Took series of 25 pictures including a

Complete panorama of the west coast. Did not con-

sider bombardement feasible, and decided to proce Acute PLAU. The one gun sighted was remarkably well

camouflaged, and because the terrain offered
excellent cover for other gun emplacements, it is
likely that they exist. There was no evidence of
any activity at the phosphate works on RENFEOR
POLYE.

Subject:

Set course for PLANU Islands.

subject.

If all times given from now on wille (I) unless
otherwise designed).

Suffaced.

(All times given from now on will be (I)

subjected to new system.

Set course for PLANU Islands.

**20 January 1944**

**1236** Entered area.

**1318** Sighted patrol boat and avoids on surface.

**1545** Departed area.

21 **January 1944.** **N**

**0003** JD radar interference. Probably Gat. This inter-
ference continues until just before daylight when

Embargo on softlite. **0610** Long SN: **28-04-6:** Comments Met

**1490**

one ship was sighted.

**1135** Sighted tops of two ships through **ENCLOSD** 1215 (A)

— page 41 —
21,000 yars. See San Ortega - Report of Third War Patrol.

: After the major portion of the oil slick from the airplanes ashore
persisted until dark. Indications are that it
resurfaced from close depth charging yesterday. We
did not discover it sooner due to the rough seas
encountered since our attack. Upon surfacing and
while blowing up considerable oil was observed on
the water. Condition of sea at this time precluded
getting into superstructure to investigate.

Oil slick is still with us.

Dived. Main induction commenced flooding rapidly.
Oil slick observed through periscope.
Surtaced and found main induction gasket pulled
out of the groove in the valve disc in two places,
each about 16 with in length. Erected temporary
repairs to gasket. Investigated the superstructure
for source of fuel leak and found the cap on the
forward fuel filling connection had worked loose.
lightened up on the cap.
Dived. Main induction tight. Could produce no oil
slick with 10 lbs. differential pressure on the
compensating system.

Surtaced.

Eighted large Jap plane, probably Mankind range
15 miles, opening.

Radar contact on
range 21,000
Powered by Rai-Active GMT-4/

Sighted FAIS Island.

Mah FAN over 10,500 yards dived to close the island in
accordance with our reconnoitering mission.
Proceeded up west coast of island about 3000 to
4000 yards off beach. When northwest of island
headed east to patrol north coast. at a point due
north of southwest corner sighted what appeared to
be the muzzle of a 40 inch gun silhouetted
sonsing on the sky. Came to southwesterly course to
as remote as possible. In South Faizan with
makes a considerable bob of 20°.
This shows the surface shape of the submarine
when contacted by the tape recorder.
After this we joined
pressed after the
solution to play.

Adrift on south up
Dan.
45°S Red line line.

Obtain source main director.

(1)

,

1209 (K)

1245 (K) 1356 (K)

1612 (K)

1645 (K)

15

Nineveh

19 January 1944

0515 (K)

0520 (K)

0632 (K)

†

— page 42 —
0B (X)

Operator, and he did an excellent job. The many hours that he spent at the attack teacher during his rest period between patrols paid big dividends.
Commenced firing four torpedoes from bow tubes.
Nos. 1 and 2 fired simultaneously, point of aim, abaft M0T. No. 3 torpedo fired with forward part of bridge as point of aim. No. 4 fired 1/4 target length ahead.
2012 (X) No. 1 and 2 hit him a fraction of a second apart in vicinity of his engine room. No. 3 hit him under the bridge breaking him in two at this point, and blowing bridge completely off the ship. Target was an AP of about 6,500 tons. It was a new ship with lines similar to our Liberty type. None like it in 206 J.
2015 (K) The after battle lookout reported seeing both parts of the target go down. At this time the attention of others on the bridge was directed to keeping clear of the escorts.
2016 (K) SJ radar reported that target had sunk. The escorts resorted to their usual tactics of dropping depth charges and milling around in circles. The PPI scope aided our subsequent uneventful retirement.
Commenced seeing white very's stars in direction of sinking for the next 20 minutes at irregular intervals.
2019 (K) Set course for FAlt Island, depth charging still going on astern of us. (Nos. 1 and 2 torpedoes fired simultaneously because of personnel error. SEAHORSE doctrine calls for a torpedoman's mate stationed between the tubes to fire by hand at the same time the tube is fired electrically to avert a misfire in case of electrical failure. Due to changes in SEAFORD personnel it was the first time this particular man was at the station and it was simply a case of "back fever". Fortunately the fire controlman stationed at the firing key immediately realized what had happened and firing continued without incident.)
17 January 1944

0914 (K) SD radar contact, 7 miles. Plane not sighted. Dived. Routined torpedoes and conducted needed training for all planesand new diving officers in varying depth at slow speed.
ENCLOSURE (A)

— page 44 —
89

:_

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**Subject:**Back to index back to index Ricardo U.S.S. _SEAHORSE._
U.S.S. _SEAHORSE. - Report of Third War Patrol._

**PROLOGUE**

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— page 46 —
01-44
c/o Fleet Post Off 06,Calif..

c/-.,-
-tt.

SERIAL: O1-44.

D.E.OlC.A-A.-I.7

From:
:
T: The Commanding Officer. '
To: The Commander in Chief. United States Fleet.
Vla: The Commander Submarines, Pacific Fleet.
_U_

Subject: U.S. STATE RETAOREA FOR U- ••A(
EmbasslH._
Enclosure: (A) Subject Report.

(B) Track Chart.

1.
Enclosure (A), covering the third war patrol of
this ship conducted in the PALAU area during the period of 6 Jan-
uary 1944 to 16 February 1944, is forwarded herewith.

S. D. CUNTIi,/.

- 67416 FILMED

— page 48 —
2L17-14 / L-8F \(3/\.16( f i)\) SUBMa RINE FOR CE, FicIFIC:JELET
<table>J AN 18 1944~\r\n<br>-E 1em- <br>-E 1 IE<br>1. I.<br>e<br>m- <br>r<br>L- <br>Q<br>-E-<br>I. ICEEPICE<br>n<br>m- <br> 9<br> 8 7<br> 6<br>-<br>1.2<br>11- 0<br>13<br>Q<br> -<br>o<br>m- <br> 24 7<br> 1<br> 5<br> -<br> 9<br>°<br>15—UER<br>L<br>11<br> RUM)L<br> e<br>RE A/Y<br>(ss<br>io.<br>ith VIA~ Ysoul<br>-<br> IN<br>C.<br>IDENT<br>GEN JO<br> -<br> 0<br>-. p<br> 2HUSS138796<br>q\(;.<br>Pahi<w r.F<br>s.<br> R DR e-<br>)<br>11 f.Qldely 7-wi e<br>-Yl<br>U E n<br>E<br>L-<br>I E<br>TER</table>\n)

<body><br>COMUSPEA CFs ROLE 0<br>U.S.S. sE<sup>E</sup>EHORrE - Secretary. DELUM<br>M-<br>-<br>For 4 Main<\br>, U. specif!\o.<br>C.<br>    e E.HPR PRESS I- INC. 0/.-. 12 120734

— page 49 —
9d,)C~ --',-Al-!.HAna(ATlIILlUTULV\UULU~,AJ, **1**

~,,

SECOND ENDORSMENT to

USS SEAHORSE Report of

Second War Patrol»

From: The Commander Submarine Squadron to:

THE Commander-in-Chief, UNITED STATES ("VALID: THE FORCE), COMMANDER "SECOND EAHT PUACE, A-L PAd6. SAC" FLEET. (2) The Commander-in-Chief, PACIFIC FLEET. Subjecl: U.S.S. SEAHORSE Report of Second War Patrol Teams on,.

1. Forwarded, concurring in the remarks of the

Commander Submarine Division FORTY FIVE»

2.. As attested by the results, the consumate skill

and aggressiveness with which this patrol was conducted Ieaves IJ+l ......-+H;:,..a..l ..... '" ...rJ_NAQ l't _-..,..1··",.: ..\ rA--rU rA-+a...... _,I L M--

nothing to be desired. The torpedo performance will be hearten- r.__...._
ing _EWIS r-+C_ .. JY. magon-0-.1 ..., , _'"':I-,.. -VH.J.M-1_ ra_

ing .. H./...... (), --._, TA-r (3)

3. The Commanding Officer's emphatic remarks in

favor of long range' surface shots are borne out by his success

in the four attacks on which definite data was' obtained. At

". an average 'Y"ID,,A,/ .M-1. A,,:7t.:'J_'r-r+,!'1'0-:--

giving a:.ID -.441n~ h -~q,J1 E {9__:..--·""~ l f_, "-rd- LaL/ 2:l. Hf\lIJJh; tl · V444!. -,ld- .;:-
beautiful" -fi<g.res t.._::,_ "UH E- -Fx a Nt..,,"M Ci"<: of \\UILl$1a,929'" Ilhfa IIll¥/- '1\1d~tat taB5 was【f.ii.,rJ GJ1_ -  ad ■- B.i"l :C! -  ,.,, M<'le- see; w叮 VIq--d J.-_
excellent, the spreads correctly chosen and applied, and the f/-'\ 3f"'" •• .::1'113405_(:4. ,CI0' " I'"'V..J1L- o •• T --'. n, Mate to haw q of 271. 1A/ rr24 ILVAICII if"-\\'t'-r ~

0

s.tu~ . ,usetr Y m. "r-.,-y:-- . N0...1 Lud1 -- a. .1.a.,~JJ. IWI arm--j - o .n t- "'" B4'1S CT ~~.a .... '-. N _a;;"A_ J,,. 4 nt. I 'VI S o •

SKCI_u,- \l'el/l- •ALL

moderate 'See. 4.,

2. Rather than an endorsement of long shots, the

foregoing only proves that with skill and training a well-

organized fire control party can successfully fire properly

prepared torpedoes for hits at.most any range with any reason­

able gyro angle.

U.--1,-if.-,_,4-....

5. Commander Submarine Squadron FOUIk adds his con­

gratulations to the Commanding Officer, officers and men of

the SEAHORSE for this successful patrol.

C. E. ALDRICH,

Acting,

— page 50 —
4D AM

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Car
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unnful)ng

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Mat

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&& (Continued).

Volus Dover, ViPM
orespondences:

1 EscutelVessel -I Unkncwn tons

12รวม가？

225,584 tons

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;
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Fell, _

ypcing.

— page 51 —
9R5-45/AI-8

Telegram:民國3号. FIRST ENGIES-

Insect. FIRST END report of U50

URUHED HINE. U.S.S. SEACORSE - Report of 2nd War Patrol, Comment

The seventh attack was made under most trying conditions beeause the

convoy was zigging in a wild, n

aran grade in the

attack. There was a premature explosion and then an expressed by Lieutenant

commander Cutter,

— page 52 —
FRE(S-5)4T6-512

Westie ---: Pocket
Coordinator’s
Hiiliction
5
To  — Sample
V

taN 1 [66]tes — —

To

Vka-
exc.t No David

SeHW (Grvg CerT
^^ ^ cancer-
slection
iage
he Luc t hiee Panee X l G
ed Port

U   EE)

T{ rcnt:: Signed Report

sformed Issue Three: he ERoD [a’d]

Business or่อย RGR IRail

C

— page 56 —
_**t**

Subject: **U.S.S. SEALORSE - Report of Second War Patrol**

factory. The bellows assembly was ruptured twice and only oZy
rigging in the logs whenever die ship went below loo feet coula
the log be kept in proper working order. Constant attention wzs
needed to keep the logs adjusted for correct speeds.

**(L)** **RADIO**

Radio reception of SUB/1CO series wss complete. Host reception
was on lhe 4,000 RC band. The usual failing io tho early normahc
hours occured but failed to interfere with Submarine soundles.

Hiiku numbers wera incomplete aaparently due to failures to re j
peat ali mumbers at gh,st it felt had been sent Buring the fay. .** r
average of five haiku numbers warc missed a day gjve to rniis.

In all cases wien messages were transmittad by the shra/cep. no
difficulty was encountered in raising him  Apaving Interference
and jamming were negligilble.

**(H)** **RADAR**

SJ radaf perfonnance was generally good. Tkw internnl wies
ware broken off ast the results of depta camera siaoek, buh mroe
lcotaea and repaired in o short time.

The lobIng mechanisn was innefariiv the only opportunity we had
to u$e it. The ships in other convoys were too close target
to permit successful resulte u[r]oon lobine.

Xaming of the range unit in tl/e range tank eain occurao. The
nylon thread was found brokey. but was quickly regaid.

Maximum range on laid was 75,000 years at o,soo ft. iletanc.
Very lar.ge ships werc range] j teo 23,ooo ye,,so

On the last attack, rad>r contact wa6 first made at 6,850 yds.,
but results improved later on, one the main signals were
tracked ouft to lo,000 years. There ! liefs considerable daylighte
in holding trgets on the scenes at oay range over 3,ooo yres
It appeared that there was a condition of failing, which Pietsc2
all night.

Escorts were taken on 'tilr hydtrol, and cause us a linfof trouble
keeping them plotted in with roll. tion to the trgets. Polar
scope would have maoe the plottirg unnecessary, as we coulo have
seen the relati'v positions on the screen. ao t-Wwosp we wastec

— page 61 —
9: Dj

: U.S.S. SEAFOR SEA FOR
.-r-:-

U.S.S. SEARORSE GUN APILICK NOLA. 2

c 18 674- CZI K 11001. 20
Time 1700 (1) Dow

\'- O
TIME Data Qual主办通Illion TAON LIAIN
Type 5 g GUN : 4"50 cell ON
KEEDSR

-:,

d.es

: -:Ie oee: Mse sepe eao . These
XCAI A II PCTF j0 ~k

i D.c:2
EIC1
SI
-.2- {{ofo E

-:3 XI}

— page 63 —
444: \N
:\ ISSIFIED 111° 1° o
U.U.S. anchurst I **nort of abean RatraL.

TiTies Fire6 \|7#'' 'sp \|0# \\1
I'ctak aqiie\ 111° ^ i 10%\o . i 10% 1
\Zorro anile \i,'o lUo \n« '02_Io lf I0i
l Ic^th set 10i 10t 10! 10'
=r..ver 111h 1111 ^ I1 a1,
Hit orMiss '? ? ? ?
'ritTe 1|* a 1*?
11k Torpeda \i-3\. 141('/\i 14-3Mi 14-3uh
aerita !, Queen 2420 a 2.4/64 24t,&2
IK Hadorge ?. O' 6-1 6-l 6-1
Serial \o. V15(T 600R
vertation set Contact 4ah430^ 6Coi.CI
.?'*en1t drawn .'- - '

-  1k \v..hallacv lO' HI 16 16
s?'erialNo. 1$06 1754 ?>

|>i> loxr 'Z|x Tra? TX
(),firing Int. < '-6

",, i tyke A->T) rad Night uit navigat. div 1V . 1'

sca Co in Edithit; Jie"准^94-4 14~­ _~~-1 j A. a"r. i.! - t*
\

O"!Chen 1 il".

-  One torpedo reinstated 5C seconds after firing. It is not

kmoun diffieit ofh6'i p.r,rotte.o -as this Ph jut Annexing the torpedo fire"'ªc, appears,
O'

— page 64 —
2038. ()

U.S.S. SEAPORT TORPEDO ATTACK NO. VII TARPOTNO. 2

TIME: 00SS: (I) Date: Dec. 1, 1943 Lat. 2C-34 in. Long. 1;00:47 E.

TARGET DATA - DRAAGE INFLICITED

Description: 4,816 ton AK in convo; with two missiles size AK's, 1
small AK, and 1 EC escort. Target identified during
daytime periscope observations as TAILP ACU.

Visibility cocritions at time of firing

Ship(s) possibly sunk: 1 AK, 4,616 tons, TAILP ACU.

Damage determined by": Anti-submarine tactics immediately following
the attack prevented close observation of danger.
Explosions were hars, and seen in the direction of the
target and one large radar pier, discovered from the
screen. Upon returning to the firing and position forty
minutes after the attack, radar contact on the escort
307
CAN RETURN TO POSITION.
was established within 2500 yards of the firing
position. 'j-
position. position. IR. .-.
Also, the convaros M distances. -.-.

40K.

Speed: 3; Course: 060); Depth: surface; angle: 0C.

"Fire Control

Speed: Normal

Line Visible

-

160.

CRT

..

IF8

200. ______.---

-

---

-35- ENCLOSURE (hex)

燃料

— page 66 —
UNLASOLF

Cm **CONDITINL**
:
```
  cSCbJEtT: U.S.S. SEABASE- SErT of [t.econa ] .lur Prolo.

```
```
     U.S.S SEA ROBEO B? +T LPL N0 . VT LA TL ALNO . 2

```
`TitXE:` `0025 (A) Date: Nov. 27, 1943` I Ri.H R-Jmop. 125-05 F

```
    TH3cs.s O .k~EL'UAL rr - ta 7.e C, IT , inconoy vlth 1 a0 ( dtc~ 43. I Al, .
     em. and three escorts. Papet :similar to RIbs ZO itiii . ~.
     The tar~t Dccro overscardt fm .:t ht. Gsidto GLrrW'\ CLllCE G~
      ttoi qtich XXXXXi . it

```
`'Tigrrvgilr..` `t.) g,Dkt: JurrG il%'l.r.r ustifti -TIIi` `101oI.tU.`
```
                                                        . @
˜sunk: I AO, 10,526 t<>ncr, [tiAars ü` 11161 -1, Ltti ; [O~R GUT4.-.C

```
```
Damage onc.rriinn 01-/: Drv'-
     wptes... eLmC.Vr decr. 11a aniiH when bri gearC na te rr.'
   I CE t?.~~trf~: 30 feet; Course: 1000; Stress i更深el 10.3] [akos: As'rpi]Yi..,,
         overcd; dagge CO'r.rleto'tSed:

```
LM.
```
        : Normalia:f:
     ; Cited,,:

```
```
Speed: 10;acuscc: 2OOO; RyanG
        ve ...[i jo~1

```
`1` 0 `SI` -  a-  [Kr] 1,1060 ..`I- IOJ

— page 67 —
25

(.......)

# ! m

[ I.

1

1;

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+

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Tubes Thest ordered
a„A'!i!i

dr. Metal Tube

:

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sys carry

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ny screw
G>2 -ozaa Papa-:

Tubes Pin Mounted :

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Express J

Tungssten phead
(Craw Lenin:

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J

_ I

dats Enabled via

r/

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—

Prepared

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i
CONTROLATOR

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at Density
ccXtigator on Uw c°nrect• c
-

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ethod of Configuratons, Bank
Method

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framework
Ground

Firing The

Specification Cosi

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anance settings

/
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Search
Relative
,

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and
/

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By Adjusting Waterfall Setting
.
Bottom Channel
Attenuation handle instruction

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all Wll
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Initial Trigger on

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Late

Dedicated Horizontal Units
Tensions and Bailways Unitized
one

DSgtam Installation To

■i

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——

— page 70 —
1 T-.-rt .k or Se6608ReaFor control.

U.S.S. SEARSGA GENERAL COMPANr;NOHO, IV FATTOL OH. 2

Time: 0245 (H) 4 ate: Nov. 22, 1943 Let. 33-36.5 N Long, 126-35 32

STORJt DATA DETAI i MISSESTKIT

sockee i quanjcflf , 9,1Z tog wounded

Serided by adult and czti ;ilE11.s to a Fairy Uldr.

(T

 NAV f

treatment of IZ OOcT 65 all sDlin 1

self pprodu te response

if inj;

9.5; ag60 , qiOUUBS - twi (1

YM:j fAl

:15ff:2.2ส่วนst ox>-;;t Iwlmbl

80 dots. F erfJagne.1-·Ict i 4 I

— page 71 —
ENCLOSURE :-

E S t - S J. ~c " ,x~o - Report of Second Mat Patrol.

:-:', -  its
..;  -

_Tubes_ Fired "f4 III8Tt 5 "f6

Track Angle tQQS 100 SO SS tO4O S

Gyro Angle 0270° oIS° o2S0

Depth Set JOW' 100' 10'

Power High High High

_H_ _Ic_

~

eratie 1tl 20' 20' 20'

_Mx_ Torpedo 14~3 A 14-3A 14~3A

Serial No. 23177 24·37 22502

rk x: Pl

194: Exploder 6-1. 6 . 1 6 . 1

8 t
_S ~9 t_ - sectional No. t0 -1 6093 1 0611

=J: ; . : -

_set_

Actuation Set Contact Contact <t.:-- . Contact Contact

actaual Contact <1..... Contact Contact

;.):. :..: ::it1.:..;. : :. :

:
c J~.: .5Jet Mc~urad~ .3. . j16 16 1~ TJ
<· :. ""}
s 9r.4rarical No. :.:_ - _ _ 4430 1087
:--
J lk~Explosive Tx~lr~ '12K '-.- Hts

Firing Into ['M 0 .~~Me 165sac. d. 16,row. D=fF.

- i-"' [,IV.]

Type Spread Div. Div. D=~

Bearon Relations [1] 000's? ns -  4 ?<1;- 4 - 14

~ [*·] Overh·ul activity P~ ..<

Target Draft 20 ~3~ C\ t ':Jrr '": ...,.. ,,,. 12 '•:t'

Course 15~0 ncourse 0~2~

n sco8d 6 ~ 0-5

fmsrt: 00ths erhr e

Range 1700 f:s. angle ~~ere

— page 75 —
,ooo

_Tubes_ _fired_ __#1____ 2 - 53

_Tack_ _angle_ 72o p 72° ‘P o q _ w _o q r o q _ 5

_gyro_ _angle_ 0 i 90 012° o i i o

_Death_ _set_ 10' 10' 10' 10'

_Power_ _High_ 13 13 13 13-

_Hit or_ _Miss_ Il it 11 il it ilit

_Erroratio_ No 1t No jno

_Mc_ _Torpedo_ 14-3a 14-3a 14-3a

_Serial_ _No._ 25025 39174 24741

_0kExpl0der_ @-l @-l @-l

_Serial_ _No._ 6044 17635 5097

__Actionu.on__ _st‘et_ Cont.ct Cont_ec tc I

_Actionuar_ _Actual_ Cont_ec ct Cont_ec tt Cont_ect

_Mk_ _Warhed_ 16 16 16

_Serial_ _No._ 2370 16a2 5S00

_Explosive_ Tpx Tpx Tpx

_Firing_ _Into_ 0 13 see 10 sec

_Type_ _Spread_ Div. Div. _d-lv.

_Sea_ _Conditions_ U - 4 N£ - 4 _ne - 4_

_Overhaul_ _Activity_ Srrry P.e... _m-..._

_Target_ _Draft_ 27 feet Ow.speed 10 kts»

_peed_ ©70 krts Course 2400

_Counter Seite_ 150° Depth frurqee

_Range_ 3700 YKasAngle Zero

— page 78 —
・・・-
''

......

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\(-\)5.3 enu.B.1t

11:31::\t. .

,sfT.c3 tǎn>(E LRG II) (2) 7(

13245678
Icro’.

22*10(03.4 with unlettered styli
<-.....

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/(10.500

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{ ...77.

under bit F.-..

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— page 81 —
ɪ   y  the  b
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— page 82 —
1
competition of a possible sinking, a successful
attack is indicated by the following facts: (1) The
convoy broke up formation and reversed course (after
immediately)
we were first sighted.
(2) On landing S. zone-rig di-
appear4. (3) A ra'dier contact on维持was established
the 20 was made within 2500 . of the firing PO-
i0n of the target when we 861
point here
triing. 3
survivors. -

0126( I) Set course for BISHOP

D.C. May 2 - 6, I943
Ihrrouie KIDRAY.

December 7, 184’
1500 K Retreat KIDLAY, tff) -mes; U

— page 87 —
3I-I'1 IQ,, 23 J.--Report of second War Patrol:

port quarter. But him uttern snd opened range at light
specm..._
0517 ( r ) sighted samtan d=aring 350° relative.

0516 ( h ) Dived,
0510 ( l ) sighted plane circling cr. us, a yeast.
0510 ( r ) heara two distant defnhc uir es or doiks.
1735 () surf..ecc...
2017 ( r ) sighted on -B M. litt dist,nce. ly miles, be. ring [i. --]

2254 ( n ) ,s,cted fith IU third light bearing 231OT. 7 ..-,:I-

0. 114.,15.1542
0502 ( h) dilated..
1732 (#) surf, ace r
15 (U)slighted wz little. lit., at te-ariny 271OT.
..8 interrog. 7-'1'7..6..
2k-"I99
0521 ( k) litened low flying plane cour .

~4..ir
1054 (#) surf,I.T.,s,ctd. iingt night dj91l

1

r**
. nter .jL.'! 7-)14’
0540 ( h) Dived.
1045 H sighted smoke, bearing sonct,n. on [CDOT

1131 ( h ) rc:ight engine borC 3050 T. ships not in siht

but thers,,, seconds of smoke were vis.docx

1410 ( r) sigwit to two engine bomber gnc::rollerng rry po

still not in sahtr, D. :Yl..de.. done to run \'.'' y

voy dnll Ainitor unst , [. :.. ].tt. on the [:.. ] u.

face.
,. bright.. and cos.,ac.df.

1720 ( k) round. (1000S7. range
- 1755 ( k
1531 1 sighted LG'lL(S. ColuJI..---- ~>tn~~~~~

179? """- '

vo.; steering . 3a.,..te.. ,لتy . . 90
UI-ll-::, -1,フ..-'

base course 1OOle ,,.... j"""

and pasti ,"J,~ si_"'"'..

th, ,'-TO. ceprx.r would ..,,e.e.t.n,ru.11 extuent pos

TS],Each ua 0- 0230.

re, were folt; . 0...t.... .Lo.'llg

. J....se .en fo... nrts.rhes.n.

ers in~o7 -,:Jun1 W - q,, 3N".,, ,

— page 102 —
3. S

:ed in

:ts of c/o Flect F

Winame -
Tacti. USC. 343.6-3 U.S.S EN Tice,

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FI-87  Το口4 1 I-A-L日和 Lst. The c/o Flect F

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ono: . The uist control.

ali: U.S. canvas .

.

(1) Fectizen... 。
(2) . The
Fict.

1. (…), cover, .8 sec. s.. t

-subj: As the p~s were .to be

Octo0.B4R7t othe rs curri. M 04 octo o AOO A A DO A 2 B R I0 b.'l oA4 :ed June ~OGA Do A2 A 2.6 B 09 A ~~o A A.0 A .R to 20

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.1A automated

— page 103 —
552/0Y speciweed sysse . _ va p 1 it

PACTpirirtma,yO/N . CD: CD: CD: CD: CD:CD ORAND qualification (s/ contents of primary intended CD: CD: CO Lo lays, unvalidate parts.

Ok: Vacant 1 tab allows in

2 conscious cert items 1.

3 all of the successful Condition in Stock mean final unit (s) percentage

— page 104 —
1943

8: 771697@

FS-22/A16-3

Serial 047(B)

NO. REQUEST

SUB-OPTIONAL ORDERS

Fleet Post Office, San Francisco, California, 1 October 1943.

U.S.S. SEAHORSE, Report of War Patrol Number One.

Minutes resulted in target zigging out of range. No mention is made of efforts to track target by sound.

(d) 1142 September 11. A 5 ship convoy with 2 escorts was seen leaving TOAGEL MILONGI about noon. SEAHORSE position on Tokio route was to northward of entrance and convoy proceeded out of range to westward.

(e) 1330 September 11. Again position to northward prevented attack on escorted tanker and freighter which entered this port from southward.

(f) 0627 September 14. Four torpedoes were fired at an unescorted tanker using a speed of 12 knots at range of 2900 yds. 4 depth charges followed this attack. When no hits were obtained, 4 torpedoes were fired at low speed setting on 1800 track at range of 4200 yds. No evidence of hits was obtained. Failure to make hits from data given may be attributed to sighting of torpedo wake and turn away.

4. SEAHORSE returned from patrol in good material condition. Refit is expected to be completed in normal period.

J. A. CONNOLLY.

Copy to:
C.O. SEAHORSE.

— page 118 —
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— page 123 —
U.S.S. SEASORSE (SS304) First War Patrol,
  Report o f .

[GUEG

| Date | Position | Course     | ALTITUDE |
|------||||
| 1.  | Aug. 10  | 15-19N     | 260       |
|      | 1993      |            | 1500      |
|      | 1343 (L)  | 169-34E     |           |
| 2.  | Aug. 10  | 15-19N     | 310       |
|      | 1509 (L)  | 169-20E     |           |

AIRCRAFT CONTACTS

TAPE
KAASAKI
Type 97
DAXE

Single eng-
ine mono-
plane.

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— page 124 —
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— page 135 —
5

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U.S.S. SEAHORSE (SS304) First War Patrol

Report of.

Slsp not obtained on either contact.

August 25

0725 (I) Sighted aon-low cpiecation plane.

1016 Sights inter-isidiiul MAlAkaL HARBOR from a pos-

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uformed opposition building this on surface battle by a oat.

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— page 138 —
1. Reporting :
Submarine Division Twenty-two.
2. It is
recommended that the
SAHORSE be credited in inflicting
the following damage on the enemy:
DAMAGED
1.0 AP  7,500 tons.

[C.W. STYER.]

— page 140 —
3118

The following awards were received by the officers and men while they served aboard the USSSEAHORSE.

NAVY CROSS

Commander Slade D. Cutter, USNR, with three gold stars in lieu of Navy Crosses.
Commander Harry H. Greer,Jr., USNR. 631

SILVER STAR

Captain C.W. Wilkins,USNR
Lieutenant R.V.Welch, USNR
Lieutenant J.D. Callahan, USNR
Lieutenant W. A. Budding,USNR
Lieutenant R. A. Ruether, USNR
Lieutenant Commander E. C. Lindon, USNR
Lieutenant (jg) W. G. Wilson, USNR
Lieutenant (jg) F. R. Fisher, USNR
Ensign J. L. McGriey, USNR
Ensign A. R. Anderson, USNR
Chief Gunner's Mate M. Martell, USNR
Chief Radio Tech. P. A. Wilson, USNR
Lieutenant (jg) L. J. Lessard, USNR:

BRONZE STAR

Lieutenant J. E. Callahan, USNR
Lieutenant F. A. Fisher, USNR - Gold Star
Lieutenant (jg) J. J. Love, USNR
Lieutenant (jg) J. F. Sporer, USNR
Ensign H. G. Heffman, USNR, -- Gold Star
CEMW. H. Holland, USNR
CTMR.W.Fiscus, USNR
EM3c E. Hutchinson, Jr., USNR
MOMM T. L. Harris, USNR
A. W. Ficett, ETI2c, USNR
T.W. Stradley, MeMM2c, USNR

By Directive dated January 1947 the USS SEAHORSE was placed out of commission, U.S. Pacific Reserve Fleet and berthed at Mare Island, California.

STATISTICS

OVERALL LENGTH    312 feet     BpAM         27 feet
DISPLACEMENT         1437 tons    SPEED      20 knots
COMPLEMENT            8 officers and 72 men

Compiled: 18 March 1954

— page 142 —
8- USS SEAHORSE (SS 304) a report from the WHALE of a convoy contact. The SEAHORSE arrived on the SCENE in time to witness the torpedoing of a 10,000 ton tanker by the WHALE. After the attack the convoy scattered and the SEAHORSE lost contact. Finally she returned to the scene of the sinking where a destroyer was picking up survivors. She began her approach in a very rough sea and fired six torpedoes. One hit directly amidships. The ship rolled over and broke in half with the two ends sticking up. Further attempts to regain contact with the remainder of the convoy were unsuccessful.

At dawn on October l1th she proceeded on independentlife-grp-rid duty for carrier plane strikes on North Luzon. She received one report of a plane down one mile outside the 100 fathom curve off Apambi, but was unable to locate the pilot. After covering air strikes for seven days she returned to Midway on 16 October.

On 3 November Commander H. H. Greer, Jr., USN, relieved Capt Mn C. W. Wilkins as commanding officer. The interim between 10 November 1944 and _10 February 1945 was spent In Mare lsland Navy Yard undergoing her first complete overhaul. On 18 February she returned to Pearl Harbor.,and on 9 March steamed to Guam.

With ViceAmirnl C..4. Luckily on hecbr.Jr.,9913 SHSAx,1e sed X<)irc'n'12 nmuex n 20,0005 19140 April 20,503 1954 China

— page 144 —
6 USS SEAHORSE (SS 304)

Therefore they would refuel and rearm to resume the attack the following morning,
after which they would fly back to Ozawa's presumably waiting carriers.
Apparently the Japanese strategists had overlooked the fact that the American
forces might be warned of the Japanese Fleet's departure from Tawi Tawi. Cover-
ing the Tawi Tawi exits were the U.S. submarines HARDER, REDFIN and BLUEFISH.
Three more were strategically placed on station north of Luzon, three south of
Mindanao, one at the eastern entrance to San Bernardino Strait, and one at the
eastern entrance to Surigao Strait.

On the night of 6 June the HARDER began a sortie in Sibu tu Passage dur-
ing which she deprived the Imperial Fleet of 4 destroyers. Frightened by this
foray Admiral Toyoda decided it was time for the fleet to get out of Tawi Tawi,
and the HARDER was th once to report just such a move. -On 10 June she reported
the departure of three battleships, four or more cruisers and some half-dozen
destroyers, steaming southward.

The next information came from the REDFIN who was also watching the Sulu
Archipelago. On the 13-th she reported six Japanese carriers, four battleships,
eight cruisers and a group of destroyers heading northward from Tawi Tawi. This;
was Ozawa's carrier force, but it behaved strangely. On the evening of the
15-th it was spotted by the FLYING FISH emerging from San Bernardino Strait and
steaming eastward. There's, instead of striking straight for the Marianas where
the offensive was now in full swing, the Japanese armada proceeded to wander
aimlessly around in the Philippine Sea. Since the fleet's sortie from Tawi
Tawi was premature, Ozawa's carriers raced out through San Bernardino Strait
about 24 hours ahead of the operation schedule. Reaching the Philippine Sea
ahead of time through him
planes from the Bonins. Stirling, he ran his force through circuitous
manoeuvers which consumed both fuel and time. This delaying action also gave
U.S. submarines —an opportunity to gain intercepting positions.

Meanwhile, Admiral Spruance had received no further reports as to the
whereatwhats of the southbound task force which the HARDER had sighted. The
SEAHORSE supplied this information. Enbrote to her patrol station
Luzon Strait on the veh'ing of 15 June, the SEAHORSE was heading north west-
ward across the open sea between the Philippines and the western Carolines
when she made the contact. She immediately sent her contact report and began
trailing. Unfortunately she developed motor trouble as she spilled amt sailed and presently
reported that she had lost contact. But the two Japanese forces
located, and other submarines continued to intercept, report, and attack. On
the evening of the 20-th Admiral Mitscher's planes roared over the Japanese
fleet to give it an unmerciful blazing. Of the st ;lplane ventured into the
battle battle : by the japanese force, a vet turned. By midnight of the Mé rfng
Japanese Combined Fleet was retreating heavily across the Philippine Sea.
Under
under the fire of submarine torpedoes and aerial bombs, the Marianas defense
plan had disintegrated.

This Battle of the Philippine Sea drowned out the torpedo of the
at tション iaar, but the statistics for Japanese oil imports that month reached 250
a new low. The SEAHORSE scored the last tanker-sinking for the month on June
zone. Tropolling in 25th Channel between Formosa and Luzon she batted two torpedoes

— page 146 —
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— page 147 —
3- USS SEAHORSE (SS 304)

two more contacts later in the week had the SEAHORSE going again, but the ships disappeared before an attack could be made. On 5 November she began an approach on a ship stranded on a reef around Gye To. Thick fog blinded the periscope, and only quick thinking and skillful submerged maneuvering kept the submarine from being grounded by the treacherous current.

Early in the morning of 17 November a submerged approach was conducted on two freighters and two escorts. The radar was working poorly, and at the firing point a final periscope sweep disclosed a destroyer close aboard with zero angle on the bow making an attack. The SEAHORSE went deep and for the next hour was on the receiving end of a depth charge attack. Intermittent depth-charging and sound-searching continued for ten hours after the destroyer had lost contact.

Then on the 22nd two freighters escorted by three destroyers were contacted. After a skillful maneuver to get under the enemy's guard, four torpedoes were fired from periscope depth to score two hits and sink the 3,322 ton freighter DAISHU MARU. Though the destroyers dropped depth charges in all directions, they never gained contact. In an hour and a half, the SEAHORSE was able to surface some distance from the sinking scene and beat a hasty retreat.

Radar contact at dusk, November 26th, put the finger on two large tankers and a corpu: length fr.ighter with three  ears:ts riding herd. The SEAHORSE charged into being another running battle. After repeated attempts to attack after dark on the surface, the submarine's situation was endangered by her proximity to the mined Straits of Tsushima. Determined to get the targets before they escapelinto the Straits, Cutter fired four torpedoes at one of the tankers at extreme range. Two hits resulted, blowing the midships section completely out and the bow and stern sank separately. Dodging one escort, the SEAHORSE drove in n one more and fired four stern shots at the second tanker. Again the m out the results were disappointing, until a sudden blast sent flames: bush morning 3,000 feet into the air. One of the escorts had apparently been damaged by the explosion and merely limped afer the SEAHORSE as she retired. Japanese records would confirm only one of these sinkings - the 7,309 ton tanker SAN ROMAIN MARI. If the other tanker did not go down, it certainly went up, hence the authorities credited the SEAHORSE with a 4,000 ton "unknown".

Due to fuel shortage, the submarine set course for Midway, but on 30 November contacted three medium transports with a small transport and a patrol craft - as escorts. No bow tubes were available, and at nightfall the SEAHORSE began the difficult approach. Time and again she manoeuvered into attack position, only to have the zigzagging convoy turn away. Then at 2249 three of the ships opened fire on the SEAHORSE. She slowed and continued to dog the group. At 0039 on 1 December she was in position, and fired four stern tubes. One wareh:ed detonated premature: by 50 seconds after leaving the tube. The whole convoy promptly opened fire, and in the din of explosions it was impossible to tell whether any torpedoes hit. Commander Cutter jockeyed the SEAHORSr out from under the barrage, and having demolished 27,579 tons of the enemy's EAST china Sea shipping, the SEAHORSE headed for Midway.

After refueling at Midway she steamed to Pearl Harbor for refit and training. On 6 January 1944 the SEAHORSE sailed on her third patrol to sweep the

— page 149 —
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               Our submarines were employed in our mounting offensive in the Pacific
         to cut enemy communications' tc his ][ e mprise, even attacking shipping
      in Japanese home waters. Our  bucks e also used to support fleet actions
         as 'j;tickets, weather stations, landing reconnaissance raidcr. and by attacking
      combat units including ASW vessels. The USS.S£}U Aiver (L ) and ner crew were no
      exception. During her patrols in the Pacific the SEAHOR§E sank 20 enemy ships
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         be sunk by any ship. In addition to nine Battle Stars she was awarded the
      nation's highest honor -- the Presidential Unit Citation.
         On 1 July 1942 when her keel was laid at the Navy Yard, Mare Island,
      California. As she slid down the way's on 9 January 1943 she was christened
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— page 151 —
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— page 152 —
1996-97

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— page 160 —
804&04J(SS S III)S 302$ 4

a report from the WHALE of a convoy contact. The SEAHORSE arrived on the scenes

— page 161 —
9- USS SEAHORSE (SS 304)

zumigs and numerous gas drums with rifle fire. The SEAHORSE was portion with fortiles th

— page 162 —
10- USS SEAHORSE (SS 304)

The following awards were received by the officers and men while they
served aboard the USS SEAHORSE.

NAVY CROSS
Commander Slade D. Cutter, USNK, with three gold stars in lieu of Navy Crosses.
Commander Harry H. Greer,Jr. , USNK.

SILVER STAR
Captain C.W. Wilkins,USN
Lieutenant R.V.Welch,USN
Lieutenant J.D. Callahan, USN
Lieutenant W. A. Budding,USN
Lieutenant R. A. Ruther,USNR
Lieutenant Commander E. C. Lindon, USNR
Lieutenant (jg) W. G. Wilson, USNR
Lieutenant (jg) P. R. Fisher, USNR
Ensign J. L. McGrEvry, USN
Ensign A. R. Anderson, USN
Chief Gunner's Mate M. Martell, USN
Chief Radio Tech. P. A. Wilson, USNR
Lieutenant (jg) L. J. Lessard, USN

BRONZE STAR
Lieutenant J. E. Callahan, USNR
Lieutenant F. A. Fisher, USNR - Gold Star
Lieutenant (jg) J. J. Love, USNR
Lieutenant (jg) J. P. Sporer, USN
Ensign H. G. Heffman,USNR, -- Gold Star
CEM W. H. Holland,USN
CIM R. W. FisNeu, USN
EM3c E. Hutchinson, Jr., USNR
COMXM T. L. Harris, USN
A. W. Ficett, ETMC, USNR
T.W. Stradley, MMMA, USNR

By Directive dotted January 1947 the USS SEAHORSE was placed out of

commission, U.S. Pacific Reserve Fleet and berthed at Mare Island, California.

STATISTICS
---
OVERALL LENGTH 312 feet        BEAM 27 feet
DISPLACEMENT 1437 tons        SPEED 20 knots
COMPLEMENT 8 officers and 72 men

Compiled: 18 March 1954

— page 163 —
13 Sep-11 Oct 1944 NAME SEAHORSE

FROM CROSS INDEX CARD 180 SERIAL DATE

SUBJECT Coordinated Patrol Report

G,ered in E'Az Group ef Capt. C.',ktlik e 200 in support

fur na 3&am Ly m mtf' to

Soultry and under TASK CROP 17.13 no ser of no date

_UTOSK?C J ES ASS IX

MICROSTERIAL NO. J ACTION REPORT OSFF FORN 2940-13 (11-53)

A

9 Mare [236,30]

DATE 29 January 1945 [11'SHORS ] AHORS/

FROM Commanding Officer USS SSA HORSE(SS-304)

ARTICLE

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SEIZED

Z8 September 1945 [DS]

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DATE 18 Sept 14945 NAME SEAHORSES

FROM 0.055 (15-18]

— page 164 —
9390U5

FROM: The Commander Task Group)/_1.18 (ZOO).

To: The Commander-in-Chief United States Fleet.

Via: (1) The Commander Submarine Force, Pacific Fleet.

(2) The Commander-in-Chief, Pacific Ocean areas.

Subject: War Patrol of Offensive Reconnaissance Group

17-18 (ZOO) from September 13, 1944 to 25 _September

References: (9) ConTaskFor 17 _Opn. 3-**_this_.. P).

Ob) War Patrol Report 599, U.S.S. SEAHORSEl(S_STOL4).

ob) War Patrol Report 45, U.S.S. HALTE (SEO2009-).

Ob) War Patrol Report 89, U.S.S.

— page 165 —
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— page 169 —
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— page 171 —
1944. (INCLUDED IN CONFIDENTIAL)
From: [Flag: 'P. F. M. 05-00391(00)](https://gist.github.com/)

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

Via: [Flag: Cannister-Carter, Cyrus (USN)-024/CA](https://gist.github.com/Cyrus-Cannister-Carter-D23-6c0c1bdcb7277576d7c72137074caaa4_c1)

Subject: War Patrol of Coordinated Attack Group 17
(BEARS) from August 21-1944 to 1 October 1944.

References:
(a) Consubtist604 CQB-d14, U.S.S. STENOHRES STE 64-78.
(b) War Patrol Report #6, U.S.S. SEAJORTS A(i.S ch.SSS).
(c) War Patrol Report #9, U.S.S. WHALEAGA SST9329none).
(d) War Patrol Report #Jl, U.S.S. SECOND CO, U.S.S. SS39398none).
(e) War Patrol Report #10, U.S.S. UNCURSPEA)
Enclosures:

(A) Narrative of Subject War Patrol Report.

| B) Instructions for ... operations D-24 August 1944 issued prior ...
||
| Alterative 1

B) Revision to enfilossure (B) issued prior
departure Saipan.

1)
Encloure original, compilation of (C, (B)
**eir way-ist?"** [ A the excerpts which follows best describes the Ritswell John with do.

**2. Encomputers referred in the celing

Relatedsmanship.

1)

REMINDERS:

|\ Bailly,, and Casow (B and Rafe)

 |d cart: **Source**++xTPSB (50)

 **ComPratised** + **Circulars', its Eyespilt.]]

**EnEdit**

**(please include CTO same)

Assessment of matter found with U. S. MSP & is planned. 3 8

— page 174 —
MARINALIAT
| SUBJECT: | WAR Patrol of Coordinated Attack Group 17.18 (BEARS) from august 21, 1944 to 11 October 1944. |
|---|---|
| 8 September 1944 | TO |
| 13 September 1944 | SEAHORSE patrolled waiting area. SEGUNDO and WHALE rejoined to patrol waiting area upon completion special missions mentioned above. |
| 0533 (I) 0 5:23 P.S 097 (I) 10:55 P.S 0900 (1) 0900 (H) 0902 (I) 0903 (H) 0904 (H) 0905 (H) 0906 (H) 0908 (H) 0909 | :
| 15 September 1944 | Patrolling in Zoo. |
| 0716 (I) 12:19 P.S 0913 (I) 15:18 R.R (I) | :
| 18 September 1944 | PATROLLING EN VIENZAGE REGISTERS: PATROLLING en route new station. |
| 20 September 1944 | : |
| 21 September 1944 | PATROLLING en route new start: |
| 19 September 1944 | :
| 22 September 1944 | :P|
| 25 September 1944 | :ENUMERATED BY GAS LAUNCHERS: : 24 July 1944 en route: 91 Neptune I & II: gaspires, fried gained Hillman GT Jumbo facility: : |
| 26 September 1944 | :
| 30 September 1944 | Gasflare fire and ENUMERATION KEYSOLVERTER. : 24 July 1944 ENUMERATION KEYSOLVERTER: : San Sepolsshp Haakchi. |
| 35 September 1944 | :
| SUBJECT: | WAR Patrol of Coordinated Attack Group 17.18 (BEARS) from august 21, 1944 to 11 October 1944. |
| 8 September 1944 | TO |

**NOTES:**

1.
2.
3.

.--

— page 178 —
17180

|: Conflict | Date       | Action                              |
||||
| 19144   | March     | Submarine BEEP reported to be altered.Fleet Pressure                |
| 19144   | February | Personnel disturbed                        |
|          | July      | Escape completed                          |
|         | October  | Personnel described                             |
| 19144   | 1944     | CO Chaudhury escaped                            |

**Confidentiality**
War Patrol of Coordinated Attack Group 17.18 (BEARS) from August 21, 1944 to 11 October 1944.

Provided by Seahorse Class Submarine Signals reporting to sub AHEARSE for detection AGRIKICE . TCD's travelled northwards to strike JAAAS and reported on patrol progress - crashed on sub TaskRAF.

Received dispatch from CompluPac for SAAFSHeqE for seven days.

Sent out a radio message to "SEAHORSE" reporting that she had not commenced to get clear of the "BAAFAN ISLAND". Other messages to coastcraft.

Received published the message and got clearance to send out Surfers to BARE RACE, CLOSING a coastwrecked patrol peridem forces to contact with "SEAHORSE".

**Specific Objectives**
7 October 19144

Received radio message from Sahl, Confirmed that the shop was also dead and if C.O. could not add anything to the "A.HUYAN ISLAND RADIO". Colonel stated his situation and wanted SOS for a cover only request through CITIGO.

Received dispatch from Seahorse reporting sea heat加剧 danger and have not returned already. Begin transmission to Co. and manufactured a new system of "Seahorse" and proceeded to contact "SEAHORSE".

Received fresh details for renewing the radio SP has arrived.

Received dispatch from AlARIA, RARING a com figure regarding the situation in Perordone down the coast of the BARE.

Recebied by "COURAGEOUS" concerned his carrier or reinforcements having been drafted to proceed again for the afternoon, the situation in the co opposite had been formed on curving details received. Consulted Co to authorized those informers transcribing this message.

-7- ENCLOSURE (A)

**Anti-submarine Patrol Date -Time**

— page 180 —
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— page 185 —
424577. U. S. S. SEAHOND (33 304)

Care Fleet Post office,

Serial: 000107San Francisco, California

24 April 1945.

From: The Commanding Officer,

The Commander In Chief, Recent State Fleet*. UNITED STATES

Via:<

Subject:

Ihaic 27 Tornadons -- Report of Firing. Submitin.

Enclosure: (A) Report of Firing Mark 27 Torpedo.

1<

Enclosure (A) is forwarded herewith.

fte.
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l. H. H. GRIDR, Jr.°

— page 188 —
424 61 Sheet of Film
A 424 METERS

FLOATING REGULATOR ROTAR

**AR-46* FZ**

LONG BEACH SC (36-30′)

SHALL NOT BE REDUCED IN SCALE OR VERTICLE

THIS MICROFILM IS

THE PROPERTY OF

THE UNITED STATES

GOVERNMENT

MICROFILMED BY   NPPSO-NAVAL DISTRICT WASHINGTON
MICROFILM SECTION

:SID SWEEP GARRITY