U.S.S. HAMMERHEAD (SS-364) — war patrol report SS-364_HAMMERHEAD.pdf

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START OF REEL
JOB NO. [HANDWRITTEN: B-111-9861-2]

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OPERATOR [HANDWRITTEN: Brooks]

DATE [HANDWRITTEN: 5-15-67]

THIS MICROFILM IS
THE PROPERTY OF
THE UNITED STATES
GOVERNMENT

[SEAL: DEPARTMENT OF DEFENSE UNITED STATES OF AMERICA]

MICROFILMED BY
DEFENSE PRINTING SERVICE-WASHINGTON
MICROFILM SECTION

REEL TARGET, START & END
NAVEXOS 3968

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SS364/A16-3
Serial ( 10 )
[STAMP: DECLASSIFIED]
[HANDWRITTEN: E.O. 11652]
[HANDWRITTEN: Sec. 3(E)]
[HANDWRITTEN: NARS, Date 5-11-77]

U.S.S. HAMMERHEAD

August 17, 1944.

From: The Commanding Officer, U.S.S. HAMMERHEAD (SS364).
To : The Commander-in-Chief, United States Fleet.
Via : Official Channels.

Subject: U.S.S. HAMMERHEAD (SS364) - Report of War Patrol
          No. One.

Enclosure: (A) Subject Report.
          (B) Track Chart. (CTF 71 only).

1. Enclosures (A) and (B), covering the first war patrol of
this vessel conducted in the area south of Formosa during the period
6 June 1944 to 17 August 1944 is forwarded herewith.

[SIGNATURE: J.C. Martin]
J.C. MARTIN

[STAMP: DECLASSIFIED NARS, DATE 5-11-77]
BY [HANDWRITTEN: J.C.C]

[HANDWRITTEN: 89507]
9 04089

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SS364/A16-3
Serial ( 10 )
(A) PROLOGUE

U.S.S. HAMMERHEAD (SS364)
Report of First War Patrol.

On 8 April reported for duty in the U.S. Fleet and departed
New Orleans, La. Arrived Balboa, C.Z. on 13 May for preliminary
training period under supervision of Commander Submarine Squadron
THREE. Training period 15 April - 1 May. Assigned four days voyage
repair and loading period. On 5 May 1944 reported for duty in SubPac
and departed Balboa, C.Z. Arrived Pearl Harbor 20 May 1944 and was
assigned to SubRon FOUR for three days voyage repairs. Training
period 24 May - 4 June under supervision of Commander Submarine
Division FORTY-FIVE. No convoy exercise due to necessity of early
arrival Midway for exercises as part of coordinated attack group.
Sound tested in Panama and Depermed in New Orleans. Readiness for
sea 6 June 1944.

(B) NARRATIVE

Assigned to coordinated attack group consisting of STEELHEAD,
PARCHE and HAMMERHEAD, Comdr. L.S. Parks, U.S.N., Comtask Group 17.15
in PARCHE, ComTaskFor 17 Operation Order No. 202-44.

6 June
1330 YW Departed Pearl in company with LITCHFIELD enroute MIDWAY to
report to ComTask Group 17.5 in accordance with ComTaskFor 17
Operation Order 196-44 to join up with coordinated attack group
and carry out Operation Order No. 202-44.

7 - 9 June
Enroute MIDWAY made daily dives, held drills and made practice
torpedo approaches on LITCHFIELD.

10 June
0830 Y Arrived MIDWAY. Assigned to Submarine Division 202 for voyage
repairs and training in connection with Task Group 17.15 consist-
ing of coordinated attack group composed of STEELHEAD, PARCHE
and HAMMERHEAD.

11-15 June
Training period and exercises with coordinated attack group under
supervision of ComTask Group 17.15. Fired 4 exercise torpedoes.

16 June
Topped off with fuel and provisions. Filled both negative tank
and safety tank with fuel. Total 102,000 gals. O.T.C. held
conference of Commanding Officers. Received Detailed Plan of
Coordinated Patrol and Attack for this group.

17 June
0930 Y Departed MIDWAY. Formed column interval 7 miles. STEELHEAD and
HAMMERHEAD to West and East respectively.
2355 Y Crossed 180th Meridian.

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This is a detailed transcription of the provided image, distinguishing between typed and handwritten text, preserving formatting, and noting unclear sections.

SS364/A16-3
Serial ( 10 )

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SS364/A16-3
Serial ( 10 )
U.S.S. HAMMERHEAD - Report of First War Patrol

19 July
1000 I Sent message to CTG 17.15 informing him of contact and my course
        of action and requested instructions. Also informed him of losing
        radar contact. Message was receipted for by him.
1032 I Received message from CTG 17.15 to change course to 055° and
        submerge.
1049 I Abandoned chase and submerged as directed.
1204 I Received "INT CONTACT" from PARCHE.
1300 I Sent amplifying message of contact. No receipt however.
1400 I Repeated message. No receipt. Depth control at 52 ft. in this
        heavy sea is most difficult and communication is rather poor
        what with control of the boat and heavy sea breaking over antenna.
1604 I Received message from PARCHE of aircraft carrier contact at 1330 I
        but directions for us in message were so garbled we were unable to
        determine course of action we should take. Decided to surface at
        1700 I if no further word received.
1657 I Aircraft contact #10. Sighted MAVIS type 4 engine patrol plane,
        distance 3 miles away. Appeared to be patrolling, came to 55 ft.
        depth to see better in hopes that he was patrolling in advance of
        a ship but could see nothing.
1715 I Patrol plane departed from our vicinity.
1958 I Surfaced.
2026 I Received message from CTG 17.15 to take station 35 miles to the south-
        east, Lat. 18 - 21N., Long. 110 - 19E. At this time he also informed
        us that PARCHE had seen an aircraft carrier and her 1400 I contact
        message was not receipted for by us or STEELHEAD. First information
        we were able to receive of this contact was at 1607 I. Depth control
        in heavy sea at 1400 I was practically impossible and at that time we
        were sending a message to PARCHE.

20 July
0000 I Arrived at designated position and patrolled on surface.
0623 I Submerged conducting routine patrol in vicinity of designated
        position. Heavy seas.
1303 I Received message from CTG 17.15 to proceed to a new area,
        setting course 010° T., speed 9.
1332 I Surfaced.

21 July
0600 I Arrived in position in eastern portion of grid. Sent message to
        CTG 17.15 stating difficulty of depth control at 52 ft. in these
        heavy seas to effect hourly radio listening period. He receipted
        for message.
0615 I Received message from CTG 17.15 to maintain surface patrol. No
        receipt for message.
0635 I Contact # 8. Lat. 21 - 06N., Long. 118 - 52E. Radar and sight
        contact of SJ radar, distance 4 miles. Headed for target.
0640 I Identified vessel as PGE type patrol craft.
0645 I Notified CTG 17.15 that patrol craft had been sighted and decided
        to submerge as he was evidently searching the area, there being
        no radar indication of any other ships with him. Very heavy seas.

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SS364/116-3                                         U.S.S. HAMMERHEAD - Report of First War Patrol.
Serial ( 10 )

CONTACT NO.                 6             7             8             9             10
DATE                        7-4-44        7-7-44        7-18-44       7-19-44       7-19-44
TIME (ZONE)                 1703          0651          1244          0721          1657
                            -9            -9            -9            -9            -9
POSITION: LAT.              20 - 00N      18 - 43N      18 - 31N      18 - 20N      18 - 28N
                            120 - 54E     119 - 10E     120 - 01E     117 - 50E     117 - 55E

SPEED                       2.5           17.0          2.5           12.0          3.0
COURSE                      015           130           270           030           055
TRIM                        52' Depth     Surface       64' Depth     Surface       64' Depth
MINUTES SINCE
LAST SEARCH                 15 minutes    continuous    3 minutes     continuous    10 minutes

NUMBER                      1             1             1             1             1

TYPE                        L.VIS         BETTY         NELL          BETTY         L.VIS

PROBABLE MISSION            Search        -             Search        Search        Search

HOW CONTACTED               Periscope     SD radar      Periscope     Bridge        Periscope
                                          and periscope               watch
ELEVATION ANGLE             1°            6°            7°            4°            3°
INIT'L RANGE                5 miles       6 miles       2 miles       6 miles       3 miles
ANGLE & REL. BRG.           -             -             -             4             -
OF PLANE                                                              000

SEA STATE (BEAU)            2             2             4             4             5
DIRECTION (REL)             120           130           130           150           130

VISIBILITY (MILES)          9             25            10            10            10

CLOUDS (HT in FT)           15000         10000         15000         10000         10000
                            50%           20%           80%           90%           90%

MOON ING. (REL)
ANGLE                       Day           Day           Day           Day           Day
PERCENT ILLUM.

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SS364/A16-3
Serial ( 10 ) U.S.S. H HAMMERHEAD - Report of First War Patrol.

CONTACT NO | 16         | 17         | 18         | 19         | 20
DATE       | 7-25-44    | 7-26-44    | 7-29-44    | 7-29-44    | 7-30-44
TIME (ZONE)| 1430       | 1655       | 0901       | 1154       | 0740
           | -9         | -9         | -9         | -9         | -9
POSITION: LAT. 20-45 | 20-01      | 21-05      | 21-00      | 20-52
           LONG. 120-57 | 122-01     | 121-18     | 121-15     | 120-48
SPEED      | 2.5        | 2.5        | 2.5        | 2.5        | 2.5
COURSE     | 110        | 130        | 210        | 210        | 160
TRIM       | 64' Depth  | 64' Depth  | 64' Depth  | 64' Depth  | 64' Depth
MINUTES SINCE| 15 minutes | 10 minutes | 2 minutes  | 15 minutes | 5 minutes
LAST SEARCH|            |            |            |            |
NUMBER     | 1          |            |            | 1          | 1
TYPE       | S.I.T      |            |            | H.VIS      | H.VIS
PROBABLE MISSION| Search     |            |            | Search     | Search
HOW CONTACTED| Periscope  |            |            | Periscope  | Periscope
ELEVATION ANGLE| 10°        | U          | U          | 5°         | 2°
INITIAL RANGE| 2 miles    | N          | N          | 2½ miles   | 5 miles
ANGEL & REL. BRG. OF| -          | K          | K          | -          | -
PLANE      |            | N          | N          |            |
WHEN IT DETECTED S/M| -          | O          | O          | -          | -
           |            | W          | W          |            |
           |            | N          | N          |            |
STATE (BEAU)| 2          | 1          | 1          | 1          | 2
SEA DIRECTION (REL)| 020        | 000        | 320        | 320        | 000
VISIBILITY (MILES)| 10 miles   | 10 miles   | 10 miles   | 10 miles   | 10 miles
CLOUDS (HT in FT)| 10000      | 10000      | 5000       | 5000       | 5000
           PERCENT ILLUM.| 90%        | 30%        | 10%        | 10%        | 80%
MOON ANG. (REL)| Day        | Day        | Day        | Day        | Day
           ANGLE|            |            |            |            |
           PERCENT ILLUM.|            |            |            |            |

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SS364/A16-3
Serial ( 10 ) U.S.S. HAMMERHEAD - Report of First War Patrol.

CONTACT NO. 21 22 23 24 25
DATE 7-30-44 7-30-44 7-30-44 7-30-44 8-2-44

TIME (ZONE) 0849 1223 1600 2133 1455
-9 -9 -9 -9 -9

POSITION: LAT. 20 - 52N 20 - 46N 20 - 39 20 - 18 14 - 50
120 - 48E 120 - 50E 121 - 05 121 - 15 128 - 27

SPEED 2.5 2.5 2.5 16.0 10.5
COURSE 165 160 160 145 150
TRIM 64' Depth 64' depth 64' depth Surface Surface

MINUTES SINCE
LAST SEARCH 5 minutes 30 minutes 30 minutes continuous continuous

NUMBER 1 1 2 1 1
TYPE JAKE JAKE MAVIS Unknown Unknown

PROBABLE MISSION Search Search Search Search Search

HOW CONTACTED Lookout Periscope Periscope SJ Radar SD radar
radar
ELEVATION ANGLE 4° 3° 3° 2° -
INITIAL RANGE 6 miles 2 miles 7 miles 8½ miles 8 miles
ANGLE & REL. BRG.
OF PLANE - - - - -
THEN IT DETECTED S/M - - - - -

STATE (BEAU) 2 2 2 2 1
SEA DIRECTION (REL) 045 000 035 065 070

VISIBILITY (MILES) 10 miles 10 miles 10 miles 15 miles 10 miles

CLOUDS (HT in FT) 15000 5000 15000 15000 6000
%OVERCAST 60% 70% 50% 20% 70%

MOON ANG. (REL) Day Day Day 320 Day
ANGLE 40
PERCENT ILLUM. 80

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SS364/A16-3.
Serial (10) U.S.S. HAMMERHEAD - Report of First War Patrol.

CONTACT NO. | 26 | 27 | 28 | 29 | 30
D.ATE | 8-3-44 | 8-3-44 | 8-4-44 | 8-7-44 | 8-7-44
TIME (ZONE) | 0724 | 1539 | 1740 | 0645 | 1145'
            | -9 | -9 | -9 | -9 | -9
POSITION: LAT. | 12 - 13N | 10 - 52 N | 7 - 00N | 4 - 30S | 5 - 10S
          LONG. | 128 - 27 | 128 - 57E | 127 - 30E | 125 - 30E | 125 - 30E
SPEED | 10.5 | 10.5 | 11.0 | 14.0 | 14.0
COURSE | 180 | 165 | 197 | 183 | 183
TRIM | Surface | Surface | Surface | Surface | Surface
MINUTES SINCE | Continuous | Continuous | Continuous | Continuous | Continuous
LAST SEARCH
NUMBER | 1 | 1 | 1 | 1 | 1
TYPE | BETTY | JAKE | BETTY | BETTY | SALLY
PROBABLE MISSION | Search | Search | Search | Search | Search
HOW CONTACTED | Lookout | Lookout & | Lookout | Lookout | Lookout
              |         | SD radar |         |         |
ELEVATION ANGLE | 7° | 5° | 7° | 40° | 3°
INITIAL RANGE | 7 miles | 3.5 miles | 6 miles | 3 miles | 8 miles
.ANGLE & REL. BRG. | - | - | - | - | -
OF PLANE | - | - | - | - | -
WHEN IT DETECTED S/M | - | - | - | - | -
STATE (BEAU) | 2 | 2 | 2 | 1 | 1
SEA DIRECTION (REL) | 020 | 040 | 010 | 015 | 015
VISIBILITY (MILES) | 10 | 8 miles | 12 miles | 15 miles | 15 miles
CLOUDS (HT in FT) | 10000 | 5000 | 10000 | 8000 | 8000
%OVERCAST | 40% | 80% | 60% | 50% | 50%
MOON ANG. (REL) | Day | Day | Day | Day | Day
ANGLE
PERCENT ILLUM.
TYPE S/M CAMOUFLAGE ON THIS PATROL: Modified Gray.

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The following is a transcription of the provided image, distinguishing between typed and handwritten text, and preserving formatting:

SS364/A16-3
Serial ( 10 )

U.S.S. HAMMERHEAD - Report of First War Patrol.

— page 39 —
- Sayreville Public Library - Board of Trustees Meeting Minutes - 10/17/2023

**SAYREVILLE PUBLIC LIBRARY**
**BOARD OF TRUSTEES MEETING MINUTES**
**October 17, 2023**

**1. Call to Order:**
The meeting was called to order by President, Alan H. Johnson, at 6:30 PM.

**2. Statement of Compliance:**
In accordance with the Open Public Meetings Act, notice of this meeting was sent to the Home News Tribune and the Star Ledger on January 10, 2023. A copy of this notice was posted on the bulletin board at the Sayreville Public Library and filed with the Municipal Clerk.

**3. Roll Call:**
**Present:** Alan H. Johnson, President; Mary Ann R. Johnson, Vice President; Mary Ann R. Johnson, Treasurer; Mary Ann R. Johnson, Secretary; Mary Ann R. Johnson, Trustee; Mary Ann R. Johnson

— page 42 —
FC5-12/A16-3
Serial 0161
[STAMP: DECLASSIFIED]
FIRST ENDORSEMENT to
U.S.S. HAMMERHEAD (SS364) -
Report of First War Patrol.

SUBMARINE SQUADRON TWELVE
Care of Fleet Post Office,
San Francisco, California,
20 August 1944.

From: The Commander Submarine Squadron TWELVE.
To: The Commander in Chief, United States Fleet.
Via: (1) The Commander Submarines, SEVENTH FLEET.
(2) The Commander SEVENTH FLEET.
Subject: U.S.S. HAMMERHEAD (SS364) - Report of First War Patrol -
Comment on.

1. The first war patrol of HAMMERHEAD, conducted as a member of a
coordinated attack group with PARCHE and STEELHEAD, was of 72 days duration
from departure Pearl to arrival Fremantle. Thirty-three days were spent in the
assigned patrol area south of Formosa. Contacts with worth while torpedo targets
were disappointingly few and HAMMERHEAD did not participate in any coordinated
attacks. Thirteen torpedoes were expended in three attacks in the last two days in
the area and a patrol sampan was destroyed by gunfire on 9 July 1944. This was
the first patrol as such for the Commanding Officer, Lieut-Comdr J.P. MARTIN,
U.S. Navy.

2. During the morning of 29 July, HAMMERHEAD delivered a well con-
ducted submerged attack with three torpedoes on a small coastal tanker escorted
by two P.C. type escorts. All torpedoes missed due to overrunning or fire con-
trol errors. On 30 July radar contact was made before daylight with a convoy
which was determined to consist of fourteen ships with five radar equipped escorts.
HAMMERHEAD decided to come in on the flank for a surface attack and fired six
torpedoes at a large passenger-freighter from a range of about 4,200 yards and
a 140° track. Four hits were observed and the ship sank six minutes later.
HAMMERHEAD was swung for the third attack and in the fast approaching dawn four
torpedoes were fired from the stern tubes at the ship astern of the first target,
range 3,300 yards, 135° port track. A change of course of this ship caused all
torpedoes to miss but three torpedo explosions were heard and the leading ship
in the center column was observed to swing to port and list to port while the
ship next astern also slowed. Both ships appeared to be sinking from torpedo
hits. HAMMERHEAD dived on the increasing daylight and attempted a submerged at-
tack upon a ship which was sighted astern of the convoy which turned out to be
an AO. HAMMERHEAD was unable to gain attack position submerged and was prevented
from surfacing and chasing by maneuvers of the escorts and plane cover. The gun
attack on 9 July was well conducted with the third round of 4"/50 hitting
effectively.

3. HAMMERHEAD encountered considerable enemy air activity in the area
and was ineffectively bombed on three occasions. No unusual anti-submarine
measures were encountered.

-1-
[STAMP: 9 04089]

— page 43 —
FC5-12/A16-3
Serial 0161
[STAMP: DECLASSIFIED]
[STAMP: FIRST ENDORSEMENT]
U.S.S. HAMMERHEAD (SS364)
Report of First War Patrol

Subject: U.S.S. HAMMERHEAD (SS364) - Report of First War Patrol -
Comment on.

— page 44 —
FE24-71/A16-3
Serial: 0941

[STAMP: DECLASSIFIED I-A-L]

UNITED STATES NAVY
12a/cr.
29 August 1944.

SECOND ENDORSEMENT to
USS HAMMERHEAD Conf. Ltr.
Report of First War Patrol.

From: Commander Submarines, SEVENTH FLEET.
To : Commander in Chief, UNITED STATES FLEET.
Via : Commander SEVENTH FLEET.

Subject: U.S.S. HAMMERHEAD (SS364) - Report of First War
Patrol - Comments on.

1. The First War Patrol of HAMMERHEAD was conducted in
the area between FORMOSA and LUZON as a unit in a coordinated
attack group. This was the first patrol for the Commanding Officer,
Lieutenant Commander J.P. MARTIN, U.S. Navy, as such.

2. There were few enemy contacts during this long patrol.
It is noted that seventy-two of the seventy-four men on board were
qualified in Submarines at the end of the first war patrol.

3. The following quotation from the Commanding Officer's
Remarks is of special interest: "Identification of friendly sub-
marines was adequately solved by the SJ radar using the special call
letters devised by the three boats."

4. This patrol is designated "successful" for the purpose
of the award of the Submarine Combat Insignia.

5. The Force Commander welcomes the HAMMERHEAD to this
Force, and congratulates the Commanding Officer, Officers, and Crew,
for inflicting the following damage on the enemy:

SUNK
1 AK (KANSAI MARU CLASS - EC) 5,600 Tons (Attack No. 2)
1 MIS 100 Tons (Gun Attack No.1)
Total 5,700 Tons

[STAMP (upside down):
SEVENTH FLEET
COMMANDER
6 - SEP 1944
1655
RECEIVED]

- 1 -

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The user wants a full transcription of the provided image.

FE24-71/A16-3
Serial: 0941
DECLASSIFIED [STAMP: A-L]

UNITED STATES NAVY
12a/gr.
29 August 1944.

SECOND ENDORSEMENT to:
USS HAMMERHEAD Conf. Ltr.
Report of First War Patrol.

Subject: U.S.S. HAMMERHEAD (SS364) - Report of First War
Patrol - [UNCLEAR: Commander] on.

— page 46 —
UNITED STATES FLEET
COMMANDER SEVENTH FLEET

A16-3(1)(F-3/ro])
Serial: 083-4

S-E-C-R-E-T
[STAMP: DECLASSIFIED]

THIRD ENDORSEMENT to:
USS HAMMERHEAD conf. ltr.
Report of First War Patrol.

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

Subject: U.S.S. HAMMERHEAD (SS364) - Report of First
War Patrol.

1. Forwarded.

[HANDWRITTEN: 12-35-A]
[HANDWRITTEN: 9 04089]

[STAMP: 21 SEP 1944]

[SIGNATURE: R. H. Cruzen]
R. H. CRUZE,
By direction.

— page 47 —
SS 64/A16-3
[STAMP: DECLASSIFIED] L
U.S.S. HAMMERHEAD
November 2, 1944.

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

Via : Official Channels.

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

Enclosure: (A) Subject Report.

1. Enclosure (A), covering the second war patrol of this
vessel conducted in the South China Sea during the period 9 September to
2 November is forwarded herewith.

[SIGNATURE: J.C. Martin]
J.C. MARTIN.

[HANDWRITTEN: DECLASSIFIED AUT DATE 05-11-07]
[HANDWRITTEN: BY 91C]

[HANDWRITTEN: 97566]

— page 49 —
U.S.S. HAMMERHEAD
U.S.S. HAMMERHEAD - Report of Second War Patrol.

10 September
1200 Position: 29-25 S, 113 - 22 E; miles steamed 190; fuel used 2007
     gallons.

11 September
0459 Submerged to conduct training dive.
0641 Surfaced.
1058 Manned gun action stations and exercised gun crew by firing.
     deck gun, 20 MM's and 30 cal. M.G.'s.
1200 Position: 24 - 05 S, 112 - 19 E; miles steamed 320; fuel used
     4067 gallons.

12 September
0549 Made landfall on NORTH WEST CAPE, WEST CAPE, W.A. and set course
     in EXMOUTH GULF for oil barge.
1034 Moored port side to oil barge and commenced fueling ship.
1200 Position: 22 - 10 S, 114 - 05 E; miles steamed 252; fuel used
     2544 gallons.
1632 Underway to clear EXMOUTH GULF having completed fueling ship.
     Received 21,000 gallons of diesel fuel oil. Both safety and neg-
     ative tanks were filled with fuel giving a total capacity of
     102,000 gallons.
1707 Slid over unchartered shoal in Lat. 22 - 02 - 40 S. and Long.
     114 - 13 - 00 E. with estimated depth of water over shoal of 16
     feet. There was no apparent damage. We were ½ mile to eastward
     of our entering track and 3/4 of a mile from nearest charted
     shoal.
1829 Took departure from NORTH WEST CAPE and set course for LOMBOK
     STRAITS and patrol area.

13 September
0537 Submerged for trim and training dive.
0713 Surfaced.
1032 Submerged to conduct simulated approach to exercise fire control
     party.
1112 Surfaced.
1200 Position: 19 - 05 S, 113 - 15 E; miles steamed 252; fuel used
     2517 gallons.

14 September
0537 Submerged for morning dive.
0705 Surfaced.
1023 Submerged conducting simulated approach to exercise fire control
     party.
1105 Manned gun action stations and at
1111 made battle surface.
1200 Position: 14 - 07 S, 114 - 45 E; miles steamed 312; fuel used
     3301 gallons.

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U.S.S. HAMMERHEAD
U.S.S. HAMMERHEAD - Report of Second War Patrol.

2334    Commenced shooting aft with a nicely checking solution
        of 10° R. gyro, range of 3800 yds. and 95° track angle.
        Heard a timed hit on the medium AK and all bridge personnel
        saw a nice big spurt of flame on the medium AK.
2335    Heard two timed hits on AO and saw explosion on AO.
2336    Large column of heavy white smoke was billowing a couple
        of hundred feet in the air from the medium AK and AO
        and we must have hit them in the engine space. Was
        a little disappointed that the AO wasn't making as much
        fireworks as the two large AKs we hit, as he was heavily
        loaded.
2337    By this time nothing was visible of the two AKs hit by
        the bow tubes although the third large AK was still
        plainly visible and there was no doubt that we could
        qualify both ships in the submarine class with a
        6 minute dive. Two Down.
2338    The medium AK and AO were no longer visible and the
        white smoke was stopped although we could see the
        trailing escort which had been in the immediate vicinity.
        Visibility was getting better now and the rain was almost
        stopped.
2339    At this time radar operator and executive officer in
        conning tower definitely determined that only the second
        AK and the three escorts were making a pip and these
        were checked by visual bearings. Range was 6500 yds.
        As we had picked them up at 15000 yds. this was definite
        proof in addition to visible proof by all bridge personnel
        that the medium AK and AO had also taken a dive along
        with the two AKs. Two More Down.
2340    Commenced reload and worked to the southwestward to head
        around the barrier reefs and come back inside again to
        intercept the one remaining ship at his estimated 3 o'clock
        position covering all possible positions between his
        probable 0100 to 0400 posits. The escorts never chased
        us and they seemed to be very confused, they milled
        around helter and skelter.

2 October
0243    Passed through the reefs with MANTANANI ISLAND abeam to
        starboard 3 miles. Made a search of the area and unable
        to find any trace of our Nip friends. I guess the
        sad-eyed escorts are taking there cargo into a bay or
        are going back to JESSELTON or BRUNEI with him.
0342    Commenced heading out through reefs to get in deeper
        water by daylight at this time we were 9 miles off
        AGAL POINT (6-52N, 116 - 38E) in about 17 fathoms.
0550    Submerged conducting routine patrol in offshore shipping
        lanes in the midst of floating islands and many logs.

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The provided image is a page from a document, likely a military report or log, given the "U.S.S. HAMMERHEAD - Report of Second War Patrol" header. The text is typed, possibly with a typewriter, and appears somewhat faded in places. There are also some handwritten annotations or corrections.

Here's the transcription, preserving line breaks and distinguishing between typed and handwritten text:

U.S.S. HAMMERHEAD - Report of Second War Patrol.

— page 69 —
The provided image is a page from a WWII submarine patrol report. Here's the transcription, preserving formatting and distinguishing between typed and handwritten text.

U.S.S. LIMERHEID
U.S.S. HAM RHEAD -- Report of Second War Patrol.

Time       Lat.                               Est. How
No. Date   Long.      Type(s)                 Initial course con-
                                              Range & speed tacted   Remarks

— page 72 —
"
"The 1980s were a decade of significant cultural and technological change, marked by the rise of personal computers, the emergence of MTV, and a distinct fashion sense. The Cold War continued to cast a long shadow, but the decade also saw the beginning of its end with the fall of the Berlin Wall in 1989. Economically, it was a period of deregulation and globalization, leading to both prosperity and increased inequality. Socially, movements for civil rights and environmental protection gained momentum, while the AIDS epidemic brought new challenges to public health. The music scene was dominated by pop, new wave, and hair metal, with iconic artists like Michael Jackson, Madonna, and Prince defining the sound of the era. Movies like "E.T. the Extra-Terrestrial," "Back to the Future," and "The Breakfast Club" captured the imagination of audiences, reflecting themes of adventure, youth, and social commentary. Overall, the 1980s were a complex and transformative decade, laying the groundwork for many of the trends and issues that would define the late 20th and early 21st centuries."

— page 74 —
U.S.S. HAMMERHEAD
U.S.S. HAMMERHEAD - Report of Second War Patrol.

| | #1 | #2 | #3 | #4 |
|:|:|:|:|:|
| TUBES FIR D | #1 | #2 | #3 | #4 |
| TRACK ANGLE | 96S | 95S | 96S | 95S |
| GYRO ANGLE | 006.5 | 005.0 | 003.0 | 005.0 |
| DEPTH SET | 6 | 6 | 6 | 6 |
| POWER | High | High | High | High |
| HIT OR MISS | Miss | Miss | Hit | Hit |
| ERRATIC (YorN) | No | No | No | No |
| MARK TORPEDO NO. | 23 | 14-3A | 23 | 23 |
| MARK EXPLODER NO. | 14060 | 24772 | 61640 | 26407 |
| SERIAL NO. | 25882 | 25875 | 25774 | 25730 |
| ACTUATION SET | Contact | Contact | Contact | Contact |
| ACTUATION ACTUAL | None | None | Contact | Contact |
| MARK WARHEAD SERIAL NO. | 16-1 | 16-1 | 16-1 | 16-1 |
| SERIAL NO. | 13179 | 17343 | 11975 | 11285 |
| EXPLOSIVE | TPX | TPX | TPX | TPX |
| FIRING INTERVAL | - | 8 | 8 | 9 |
| TYPE SPREAD | 1R | 1L | 2R | 2L |
| SEA CONDITION | 1 | 1 | 1 | 1 |
| OVERHAUL ACTIVITY | U.S.S. GRIFFIN | | | |

(I) MINES. No mines encountered but we remained 8 miles from
any expected mine fields, keeping within at least 12 fathoms of
water.

(J) Anti-submarine measures encountered this patrol were nothing
new nor were they intensive. Radar was only evident on one escort
during one attack and the it was only used for 1 minute. Accurate
echo ranging up to 3000 yds. was encountered during the attack on
the night of 20 October. All escorts encountered seemed to depend
solely on sound detection. A tendency was noted for escorts to
stick close to undamaged ships and not letting themselves be drawn
out into a chase after attacking. A belated use of the gun on
attack #3 was attempted but was not accurate. Used earlier it
could have been very discriminating.
Evasive measures were to run at 7 knots during the approach
on a glassy sea with 4 engines idling, then to use that smoke
cloud given off as power was applied to escape at high speed.
Advantage was taken whenever possible of light and background
conditions and the paint job helped a lot.

- 27 -

— page 85 —
USS HAMMERHEAD
Attack No. 243
20 October '44
Firing point:
4°04'N 113°35 E
Depth: 170 ft
Scale 1"=2mile
All times- How

                                                              Hammerhead
                                                              c-055°g-8kt
                                                    0145 Initial contact
                                                                    0157
Course 350°T to
clear area s-18kt
0355
                                                                    0202
0349
                                                              0224 0221
0344                                                                    0248
0323
                                                                    0212
0327                                                    Fired#1-6 0232
                                                                    0217
0331                                                                    0240
fired #1-4                                                      0234 Fired
0334                                                                    #9&10
                                                    Missed Escort
0314                                0302

0336                                                    0302
2 hits                                          Convoy Base Course 200°T
                                                                    0157
                                                                    0236
                                                                    2 hits

Only 3 AK's, 3 Escorts
                                                                    6 Large AK's
                                                                    3 Escorts
                                                                    Speed 8.2kt

— page 86 —
USS HAMMERHEAD
attack No. One
1 October 1944
Firing point ;
6°30 N 116°12E
Depth 23f
Scale 1"=2mile
All times- How

St. Joseph Rock

Course 250°T to
clear area s-18kt

Initial
contact
Hammerhead
c-185°s-7.5kt

Fired
#1-6
Fired
#7-10

3hits 3hits
1 ship 3escorts
c-030° s-7.2kt

5ships 3escorts
c-030° s-7.2kt

Layne Rock

North Hill Rock

Usukan Island

BORNEO

— page 87 —
FC5-12/A16-3
Serial 0354
[STAMP: DECLASSIFIED]
[HANDWRITTEN: FIRST ENDORSEMENT to]
[HANDWRITTEN: U.S.S. HAMMERHEAD - Report]
[HANDWRITTEN: of Second War Patrol.]

SUBMARINE SQUADRON TWELVE
Care of Fleet Post Office,
San Francisco, California.
5 November 1944.

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

Subject: U.S.S. HAMMERHEAD (SS364) - Report of Second
         War Patrol.

1. The second war patrol of HAMMERHEAD covered a period of
54 days, 42 days of which were spent north of the Malay Barrier in the
Java and South China Seas. The patrol was excellently conducted, and
the area coverage of the close inshore areas on the northwest Borneo
coast was well conceived and executed in the face of numerous navigational
hazards.

2. Two Jap convoys were contacted and both contacts were
developed into well executed and effective torpedo attacks. It is note-
worthy that the exhaust smoke screen was so effective in aiding HAMMER-
HEAD's escape on the surface. This does not constitute an endorsement
of smoky exhaust, but rather of turning a potential liability into a real
asset.

Attack No. 1: On the night of 1 October, a convoy consisting of
4 AK's and 1 AO, with 3 escorts was attacked on the surface. Ten
torpedoes were fired for a total of six hits, either observed or
timed, in four of the five ships of the convoy. Two AK's were
observed to sink and the disappearance of the AO and the third AK
from the radar screen, indicates a strong likelihood that these
ships also sank. Attempts to intercept the remaining ship of
this convoy were unsuccessful.

Attack No. 2: During early morning of 20 October, contact was
made with a 6 ship convoy with 3 escorts. After one unsuccessful
attempt to close was thwarted by one of the escorts, a 6 torpedo
attack was delivered from a range of 5000 yards. Two timed hits
were obtained, and a half-hour later two explosions were observed,
followed immediately by two ships bursting into flames. In the
meanwhile, two torpedoes were run down the throat at a chasing escort
1400 yards distant, but in spite of observed explosions, no damage
apparently resulted.

- 1 -

— page 88 —
FC5-12/A16-3
Serial 0354
[STAMP: DECLASSIFIED]
[STAMP: CONFIDENTIAL]
[STAMP: FIRST ENDORSEMENT]
U.S.S. HAMMERHEAD -- Report
of Second War Patrol.

Subject: U.S.S. HAMMERHEAD (SS364) - Report of Second
War Patrol.

— page 89 —
[HANDWRITTEN: J.B]
FE24-71/A16-5
Serial 01382
DECLASSIFIED I-A-L
[STAMP: DECLASSIFIED]

UNITED STATES NAVY
12a/pr
17 November 1944.

SECOND ENDORSEMENT to:
USS HAMMERHEAD Conf.
Ltr. A16-3 No Serial,
dated 2 November 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. HAMMERHEAD (SS364) - Report of Second War
Patrol - Comment on.

1. HAMMERHEAD's Second War Patrol was conducted in the
SOUTH CHINA SEA. Commander J. C. MARTIN, U.S.N., proved himself to
be a daring and effective Commanding Officer by the manner in which
he conducted this patrol and by the results achieved.

2. Three night surface attacks were made upon two
convoys. On the first attack the enemy had sought protection by
routing the convoy through shallow water inshore of reefs which
fringe the Northwest Coast of BORNEO. HAMMERHEAD foiled their
measures by going in after them and delivering an attack which
resulted in six hits on four targets. Three of these were observed
to sink and the fourth was heavily damaged. Three weeks later,
also in navigationally hazardous waters, HAMMERHEAD cleverly utilized
her engine smoke for a screen and delivered two attacks on an
alerted convoy. Three ships were set afire and observed to sink.

3. The Cleanliness and general condition of materiel
upkeep on HAMMERHEAD upon return were outstanding.

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

5. HAMMERHEAD reported being fired upon by a shore
battery, apparently radar controlled, located on the Southwest
Coast of LOMBOK near "steep cliff" shown on B.A. Chart 1653(c).
Reports from other submarines verify this location and indicate a
maximum range of approximately 12,000 to 14,000 yards.

6. The Force Commander takes pleasure in congratulating
[HANDWRITTEN: X] the Commanding Officer, Officers, and Crew on this very successful
patrol.

- 1 -
1 0518

— page 90 —
- Page 1

FE24-71/A16-3
Serial: 01382
DECLASSIFIED I-A-L

UNITED STATES NAVY
12a/gr.
17 November 1944.

SECOND ENDORSEMENT to:
USS HAMMERHEAD (SS364)
Ltr. A16-3 No Serial,
dated 2 November, 1944.
Report of Second War
Patrol.

Subject: U.S.S. HAMMERHEAD (SS364) - Report of Second War
Patrol - Comment on.

— page 91 —
UNITED STATES FLEET
COMMANDER SEVENTH FLEET

A16-3(F-3-4/cg)
Serial: [HANDWRITTEN: 0258]

[STAMP: DECLASSIFIED]

THIRD ENDORSEMENT to:
USS HAMMERHEAD Conf.
Ltr. A16-3, No Serial
of 2 November 1944.

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

Subject: U.S.S. HAMMERHEAD (SS364) - Report of
Second War Patrol - Comment on.

1. Forwarded.

2. The subject report discloses a highly
successful War Patrol by the USS HAMMERHEAD. Three night
surface attacks upon two convoys resulted in the sinking of
six targets and damage to another. This again demonstrates
the value of high speed night surface attacks whenever they
can be made. No depth charges were dropped on the HAMMERHEAD
during the patrol.

3. The Commander Seventh Fleet congratulates
the Captain, Officers and crew of the USS HAMMERHEAD on the
excellent performance in conducting a highly successful patrol
which resulted in serious loss and damage to the Japanese.

Copies to:
ComSubs7thFlt
ComSubRon12
CO, USS HAMMERHEAD

[SIGNATURE: C. E. Van Hook]
C. E. VAN HOOK,
Deputy

1 0518

— page 92 —
U.S.S. HALLIBUT
Care of Fleet Post Office,
San Francisco, California.
17 January 1945.

SS364
A16-3
[STAMP: DECLASSIFIED]

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

Via: Official Channels.

Subject: U.S.S. HALLIBUT - Report of War Patrol Number Three.
[STAMP: 3 02176]

Enclosure: (A) Subject Report.

1. Enclosure (A) covering the third war patrol of this
vessel conducted in the South China Sea during the period 25 November
to 17 January is forwarded herewith.

[SIGNATURE: J. C. Martin]
J. C. MARTIN.

[STAMP: DECLASSIFIED PER SEC. OF NAVY MEMO]
BY [HANDWRITTEN: 916] DATE [HANDWRITTEN: 5-11-67]

[HANDWRITTEN: 110219]

— page 97 —
U.S.S. HAMMERHEAD - Report of Third War Patrol.

depending on clarity of water and sky conditions.
1200 Position: 7 - 30 S, 116 - 10 E; miles steamed 256, fuel used;
      3296 gallons.
1902 Surfaced.

3 December
0525 Submerged conducting routine patrol. Hatch, J.R., Slc., USNR,
      received a nasty lacerated lip and tongue while descending
      into Conning Tower from bridge. Treated by pharmacist's mate
      and stitches taken in lip and tongue.
1200 Position: 5 - 47 S, 114 - 29 E; miles steamed 221; fuel used
      2814 gallons. Sighted several fishing vessels off GREAT MAS-
      LEMBO ISLAND during the day.
1430 Sighted GREAT MASALEMBO ISLAND, distance 11 miles.
1907 Surfaced with two fishing vessels in sight and maneuvered to
      avoid being sighted.

4 December
0533 Submerged, conducting routine patrol.
1200 Position: 5 - 5 S, 114 - 48 E; miles steamed 197, fuel used;
      1874 gallons.
1923 Surfaced: Engineer officer reports that our lube oil consump-
      tion is excessive due to a leaky oil cooler on #2 main engine
      and a multitude of leaks that have appeared since high speed
      running at night time. Will eliminate leaks as much as possi-
      ble by tightening of cylinder heads, lube oil line and using
      #2 engine as little as possible.

5 December
0531 Submerged conducting routine patrol.
1200 Position: 3 - 53 S, 109 - 32 E; miles steamed 180; fuel used;
      1481 gallons.
1935 Surfaced, commenced transit of KARIMATA STRAIT.

6 December
0015 SJ radar out of commission just as we were about to pick up
      S ROETOE ISLAND - a big help.
0235 Sighted and passed southbound U.S.S. Submarine, distance about
      3 miles. Did not feel too good about this as he was probab-
      ly trying to get some recognition on SJ and we were too close to
      the island to use blinker. Probably the FLOUNDER.
0315 Cleared KARIMATA STRAIT.
0546 Submerged off entrance to Strait conducting routine patrol.
1200 Position: 01 - 20 S, 108 - 03 E; miles steamed 215; fuel used;
      3805 gallons.
1934 Surfaced, proceeding eastward of TAKELAN ISLANDS.

-5-

— page 98 —
## The Story of the USS Halibut's Third War Patrol

The USS Halibut, a Gato-class submarine, embarked on its third war patrol on December 7, 1943, a date etched in history for the attack on Pearl Harbor. This patrol would take them through the treacherous waters of the Pacific, hunting for Japanese shipping.

**Early Days and Sightings:**

The patrol began with the Halibut passing Palawan Island and manning their SD and SJ radars for a power slow-speed sweep. The crew was on high alert, trimming the boat heavy for passage through the low-flying plane island chain. The hope was to avoid being forced down and to make contact at full speed if necessary.

Over the next few hours, the Halibut made several radar contacts:
*   **0814:** Sighted SCRAG Island.
*   **1008:** Sighted MIDI Island.
*   **1012:** Sighted Great Natcena Island.
*   **1150:** Sighted SOLEIL Island.

By noon, their position was 3° 13' N, 108° 26' E, having steamed 321 miles and used 4855 gallons of fuel.

**A Developing Situation:**

At 1300, the Halibut cleared the pass between Great Natcena Island and Soleil Island, 21 miles from the latter, and set a course for an intercept position.

The evening brought more activity:
*   **

— page 102 —
U.S.S. HAMMERHEAD - Report of Third War Patrol.

0200        MINGO reported that she was being chased at 17 knots. That
            couldn't have been the small escort that disappeared from
            our convoy.
0211        PADDLE sent message "Submerging." Now what?
0245        PADDLE sent welcome news that she had sunk one large tanker,
            one CHIDORI. Thanks to MINGO and had 10 forward and 1 aft.
            Sent congratulations and nice work to PADDLE and that I was
            sending dispatch.
0400        MINGO reported that she had lost escorts. The results
            of this impromptu wolf pack were pretty fair with the
            sinking of two large tankers and one CHIDORI. It was most
            fortunate that we all got together before any attacks had
            been made and the co-operation of all hands were excellent.
            I'm very sorry that MINGO didn't bag anything but
            PADDLE's message MINGO was a great help. I still don't
            know the details of the PADDLE attack as we heard no
            explosions. I wonder if she was working on another outfit.
            However I'll report to the boss what I know and then send
            a correction if necessary after rendezvousing with PADDLE
            tonight.
0615        This "impromptu wolf pack" certainly demonstrated the
            soundness of the co-ordinated attack doctrine. The
            communications and co-operation of all hands was of a high
            standard.
0624        Sent Serial #2 to ComTaskGroup 71.1.
0615        Sent message to both ships that I was submerging for day.
            Submerged conducting routine patrol heading for rendez-
            vous point with LAPON and MINGO.
1200        Position: 5 - 07 N, 110 - 01 E; miles steamed; 314, fuel
            used 5297 gallons.
1908        Surfaced, proceeding toward rendezvous.
1920        Aircraft contact #1, Lat. 5 - 25 N, Long. 109 - 53 E.
            Commanding Officer sighted lights of plane coming from
            starboard to port, distance about 4 miles. Submerged in
            quite a bit of confusion with Navigation dept., Gunnery
            dept., and spare quartermaster being strained through the
            hatch. Famous last words - quartermaster as he was jumping
            down hatch to close it - "Here comes the water."
1958        Surfaced.

9 December
0110        Rendezvoused with PADDLE and passed information on daily
            stations for next two weeks. Interesting note: Substi-
            tution for the well-known bottle container was achieved by
            use of one of the articles for sale in the rubber goods
            department of the ships' store. At the time PADDLE was able
            to clear up last night's attack with the information that
            her attack was delivered almost simultaneously with ours

-10-

— page 103 —
U.S.S. HAMMERHEAD - Report of Third War Patrol

but 20 miles away on another section of the convoy which con-
sisted of 4 tankers and at least 5 escorts, at least three of
which were CHIDORI type. He was unable to maintain contact
due to counter measures and remaining target group of 3
tankers and 3 CHIDORI were last seen heading west. Wish I had
known that last night and we might have been able to knock off
a few more tonight. Will send a correction of my message to
the boss and tell him that those tankers didn't return to
port. Looks now as if MINGO was chased by escorts from the
section PADDLE attacked. The escorts he drew off helped the
PADDLE greatly.

0159 Completed rendezvous and headed toward position in accordance
     with my plans. Don't know where LAPON is, have called him
     several times but no answer. Will come back here tomorrow
     night for him if possible.

0457 Sent Serial #3 to ComTaskGroup 71.1 giving additional infor-
     mation that part of convoy did not return to port.

0618 Arrived in position and commenced uniform patrol as co-ordin-
     ated attack group with PADDLE.

0657 MINGO requested to become a part of our pack for co-ordinated
     attack in his area on reported shipping.

0800 Sent instructions to PADDLE and MINGO to operate as a co-ord-
     inated group and to be in position by 2200 tonight and pro-
     ceeded toward that position.

1200 Position: 6 - 33 N, 110 - 39 E; miles steamed 196; fuel
     used 1786 gallons.

1537 Received first message from LAPON saying he had been calling
     PADDLE since 1100.

1605 Told LAPON to rendezvous with me at my 2200 position tonight
     if possible otherwise at 2100 tomorrow night.

2230 Received Serial 93 from ComTaskGroup 71.1 assigning specific
     stations to all 4 of us for the next few days.

2300 PADDLE sent message stating when she would have to leave our
     co-ordinated attack group in order to take new station assig-
     ned by CTF 71.1

2312 Informed LAPON we would rendezvous with him at 2400 tomorrow
     at his assigned station.

10 December

0455 No contacts, so sent message to MINGO, PADDLE and LAPON
     "Cease co-ordinated search, proceed in accordance with Serial
     93. Commenced proceeding toward designated position.

0610 Asked LAPON to confirm rendezvous for tonight as it is out of
     my way and if he can't make it I want to know.

-11-

— page 105 —
U.S.S. HAMMERHEAD - Report of Third War Patrol

14 December.
0556     Submerged for trim dive and torpedo routine.
0753     Surfaced conducting surface patrol on assigned station.
1200     Position: 10 - 46 N, 111 - 31 E; miles steamed 184; fuel
         975 gallons.

15 December.
0200     Received CTF Serial 31 directing us to take position off coast
         of MINDORO STRAIT in company with other submarines. Proceeded
         to head for position at best speed. We should arrive there
         about sunrise tomorrow morning.
1200     Position: 11 - 52 N, 113 - 21 E; miles steamed 255, fuel used
         2562 gallons.
1430     Received CTF Serial #33 slightly altering our assigned posi-
         tion.
1715     Sighted smoke on horizon and soon after picked up LAPON with
         high periscope. Exchanged calls with him and he indicated
         wished to pass us a message.
1814     Passed messages back and forth. Sent him same info I had
         given the PADDLE night of the eighth and his message told me
         of his trip from LOMBOK to area. He had a wolf pack of 4
         chase him in the strait the night after I went through.
         Arrangements for a rendezvous the 24th of December, but it
         looks to me as if our wolf pack is fast dissolving into nothing
         in view of more important operations.
1827     Resumed course proceeding toward our assigned position.

16 December.
0550     Arrived in assigned position.
0558     Submerged for trim dive and torpedo routine.
0752     Surfaced conducting routine surface patrol.
1003     Aircraft contact #3, Lat. 13 - 50 N, Long. 117 - 56 E. Sighted
         EMILY type patrol plane distance 5 miles. Submerged.
1200     Position: 13 - 35 N., 118 - 02 E; miles steamed 314; fuel
         used 4016 gallons.
1252     Surfaced, resumed surface patrol.
1752     Sighted U.S.S. LAPON, distance 7 miles.

17 December.
0556     Submerged for trim dive and torpedo routine.
0746     Surfaced, resumed surface patrol.
1017     Aircraft contact #4. Lat. 15 - 20 N., Long., 117 - 50 E.
         Sighted unknown type land-based bomber, distance 5 miles.
         IFF interference. Submerged. Looks like they may have us
         spotted in.
1200     Position: 15 - 18 N, 117 - 50 E; miles steamed 154; fuel
         used 792 gallons.
1252     Surfaced; resumed surface patrol.

-13-

— page 106 —
U. S. S. HAMMERHEAD - Report Of Third War Patrol.

18 December
0552 Submerged for trim dive and torpedo routine.
0719 Surfaced; resumed surface patrol.
1005 Aircraft contact #5, Lat 13 - 12 N, Long. 117 - 50 E.
     Liberator type bomber. No contact 11 miles and then sighted.
     As he did not close and triggered the IFF, did not dive. He
     disappeared bearing toward the west.
1200 Position: 12 - 58 N, 117 - 52 E; miles steamed 149; fuel
     used 959 gallons.
1305 Aircraft contact #6. Lat. 13 - 07 N, Long. 117 - 50 E.
     Sighted unidentified bomber distance 5 miles. Submerged.
1500 Surfaced; resumed surface patrol.
1505 Message from LAPON giving position and that he had sighted
     smoke. Commenced bearing in that direction.
1834 LAPON sent message that convoy was identified as one AO and
     one AO and 2 DD, giving their course as 240, speed 10 and
     that he was tracking.
1841 Changed course to intercept convoy at estimated 2130
     position.
2132 Ship contact #6. Lat 13 - 51, Long. 117 - 17. Made radar
     contact 17,000 yards.
2159 Contact determined to consist of 2 large ships and 2
     escorts. Manned battle stations.
2215 LAPON sent message "No attack yet, escort trouble". At this
     time we had placed LAPON with his radar interference as
     being astern of convoy so decided to attack from port flank
     on port bow of convoy. Visibility just fair.
     Began maneuver for attack position on port beam of convoy.
     The swells are about 7 feet high and I hope they don't inter-
     fere with the torpedo running correctly.
2238 In excellent attack position and have sneaked in behind
     rear of the port escort who is at a steady range of about
     2500 yards with the target 3,500 yards away. No indication
     of radar. Firing slightly 4° port, track at least 450 feet
     long and escorts appear to be about CHIDORI size. With track
     of 102° port, gyro 350 and torpedo run of 3650 yards, fired
     6 torpedoes. Solution checked nicely throughout, firing
     target course 240°, speed 10. A very nice set-up.
     All torpedoes left tubes and appeared to be running normal
     until out of sight. As both targets were almost overlapping,
     used a large spread for 700 feet to cover them both.
2239 Completed firing and turned to have stern tubes bear. How-
     ever I didn't want to shoot if nothing happened as with such
     a good set up, the only thing that could probably make us miss
     would be the sea condition.
2245 No results so commenced opening target staying on his beam and
     sent a message to LAPON "Attack completed, trailing from
     port." If he attacked and has any luck. I'll go in with my
     remaining three torpedoes.

-14-

— page 107 —
U.S.S. HAMMERHEAD - Report of Third War Patrol

19 December
0015 Still trailing from port about 5 miles on his beam and waiting
       for LAPON to attack.
0035 LAPON sent message that he had fired 9 torpedoes, no hits
       and requested opinion on the sea condition.
0110 Sent message that we were returning to assigned station and
       considered sea condition unfavorable for further attack.
       Figured I shouldn't leave my assigned position any longer,
       especially with such an unfavorable sea.
0507 LAPON sent message that he was returning to station. Sea
       getting heavier.
0541 Back in position on station.
0551 Submerged for trim dive and torpedo routine.
0754 Surfaced; resumed surface patrol.
1105 Aircraft contact #7. Lat. 13 - 15 N., Long. 117 - 19 E.
       Sighted CHERRY type enemy patrol bomber distance 6 miles,
       heading for us. Submerged -- They seem to have us spotted
       on their morning patrol sweep.
1200 Position: 13 - 15 N., 117 - 43 E; miles steamed 193; fuel
       used 1441 gallons.
1303 Surfaced, resumed surface patrol. Seas getting heavier.
2030 Received CTF Serial # 57, directing us to patrol off SUBIC BAY
       area.
2045 Headed for position at best speed considering sea condition.
       Taking good about 7 knots at 2 engine speed - a young typhoon.
22 Sent message to CTC in HAMBILL that we would arrive station
       10 hours tomorrow and that we had 3 torpedoes remaining.

20 December
0630 Aircraft contact #8. Lat. 14 - 38N., Long. 118 - 12 E. SD
       contact. Least range 12 miles and he triggered our IFF.
       Very heavy sea. Typhoon proportions.
1040 Aircraft contact #9. Lat. 14 - 49 N., Long 118 - 33 E.
       SD and sight contact. B-17 type. Least range 11 miles. Trig-
       gered IFF.
1200 Position: 14 - 48 N. 118 - 39 E; miles steamed; 198, fuel
       used 1861 gallons.
1204 Heavy sea pooped us and a small flood occurred in various
       sections of boat. Will ride this out in trough - uncomfor-
       table but safer.

21 December
0650 Aircraft contact #10. Lat. 14 - 50 N., Long. 118 - 40 E. SD
       contact. Did not trigger IFF. When range closed to 6 miles
       submerged. Plane not sighted.
0940 Surfaced; resumed surface patrol.

-15-

— page 112 —
U.S.S. HAMMERHEAD - Report of Third War Patrol.

1458 Submerged.
1904 Surfaced.
2125 PADDLE 30 miles to northeast, informed as she was diving for
      plane. Friend or foe?
2236 PADDLE again reported diving for plane.

29 December
0750 Aircraft contact #27. Lat. 14 - 48 N., Long. 118 - 42 E.
      SD contact, IFF at 32 miles. Closed to 29 miles then opened
      range. Plane not sighted.
0845 Aircraft contact #28. Lat. 14 - 49 N., Long. 118 - 37 E.
      Sighted 4 engine bomber at 5 miles. No IFF. Looked like a
      B-24 but heading in fast and at
0846 Submerged -- Damn these zoomies.
1103 Surfaced; conducting surface patrol.
1200 Position: 14 - 52 N., 118 - 34 E; miles steamed 151; fuel
      used 756 gallons.
1519 Aircraft contact #29. Lat. 14 - 52 N., Long. 118 - 40 E.
      SD contact, IFF 28 miles. Closed to 24 miles then opened
      range. Not sighted.
1631 Aircraft contact #30. Lat. 14 - 56 N., Long. 118 - 37 E.
      SD contact, IFF at 20 miles. Closed to 8 miles, sighted,
      headed at ship, 2 engine BETTY bomber and at-
1634 Submerged.
1906 Surfaced, conducting surface patrol.

30 December
0652 Aircraft contact #31. Lat. 14 - 56 N., Long. 118 - 42 E.
      SD contact, IFF 40 miles - 2 planes. One plane closed to
      9 miles. Not sighted and at-
0709 Submerged.
0958 Surfaced, conducting surface patrol.
1200 Position: 15 - 00 N., 118 - 27 E; miles steamed 154; fuel
      used 762.
1528 Aircraft contact #32. Lat. 14 - 58 N., Long. 118 - 33 E.
      Sight and SD contact on 4 engine LIBERATOR type bomber.
      Range 12 miles. Plane did not close and soon passed out of
      sight.
1620 Aircraft contact #33. Lat. 14 -55 N., Long. 118 - 36 E.
      Sight and SD contact on single engine plane similar to
      CORSAIR. Plane began closing rapidly at 10 miles and when
      7 miles away at-
1631 Submerged.
1905 Surfaced, conducting surface patrol.

31 December
0010 Despite all remedial measures and economical running of
      engine our lubricating oil supply is now down to 2000
      gallons. I estimate that it will take over 1,500 gallons at
      present consumption rate on economical speed to reach
      FREMANTLE. So believe that I do not have over 4 days
      -20-

— page 120 —
U.S.S. HAMMERHEAD - Report of Third War Patrol.
(G) Aircraft Contacts

| Con-taot No. | Time Date | Lat. Long. | Types | Ini-tial Range | Est. Course Speed | How Contacted | Remarks |
|---|---|---|---|---|---|---|---|
| 1. | 1920H 8 Dec. | 5-25N 109-53E | Unknown | - | - | S | Sighted during evening twilight. |
| 2. | 1713H 11 Dec. | 10-42N 111-45E | BETTY | 5 miles | 310 200E | S | - |
| 3. | 003H 16 Dec. | 13-50N 117-56E | EMILY | 5 miles | 290° - | S | - |
| 4. | 1017H 17 Dec. | 13-20N 117-50E | Unknown | 5 miles | 270 - | S-R | - |
| 5. | 1005H 18 Dec. | 13-12N 117-50E | 4 engine Bomber | 11 miles | 270 - | R-S | Least range 11 miles. Not sighted. |
| 6. | 1305H 18 Dec. | 13-07N 117-50E | Bomber (Est) | 6 miles | 220 - | S | Not sighted. |
| 7. | 1105H 19 Dec. | 13-15N 117-49E | CHERRY | 6 miles | 120 - | S | - |
| 8. | 0630H 20 Dec. | 14-30N 118-12E | Unknown | 12 miles | - | R | Not sighted. |
| 9. | 1040H 20 Dec. | 14-49N 118-33E | FLYING FORTRESS | 11 miles | - | S-R | Not sighted. |
| 10. | 0650H 21 Dec. | 14-58N 118-40E | Unknown | 6 miles | - | R | Not sighted. |
| 11. | 1325H 21 Dec. | 15-03N 118-06E | Unknown | 28 miles | - | R | Not sighted |
| 12. | 0830H 22 Dec. | 15-00N 118-29E | LIBERATOR | 13 miles (Est) | 270 - | S | Not sighted |
| 13. | 1243H 22 Dec. | 15-04N 118-07E | BETTY | 6 miles | 180° | S | Headed at ship. |
| 14. | 1635H 22 Dec. | 15-02N 118-29E | 2 small unidentified | 9 miles (Est) | - | S | Not sighted |
| 15. | 1230H 23 Dec. | 15-26N 118-05E | Unknown | 30 miles | - | R | Not sighted. |

— page 121 —
U.S.S. HAMMERHEAD - Report of Third War Patrol.
(G) Aircraft Contacts (Continued)

| Con-tact No. | Time Date | Lat. Long. | Type | Ini-tial Range | Est. Course Speed | How Cont-acted | Remarks |
|---|---|---|---|---|---|---|---|
| 16. | 1433H 23 Dec. | 15-33N 118-00E | Unknown | 7 miles | - | R | Not sighted. |
| 17. | 1757H 23 Dec. | 15-20N 118-18E | Unknown | 7 miles | - | R | Not sighted. |
| 18. | 0820 24 Dec. | 15-36N 118-01E | Unknown | 32 miles | - | R | Dove at 7 miles Not sighted but plane was head-ed in fast. |
| 19. | 1140H 24 Dec. | 16-00N 118-12E | Unknown | 30 miles | - | R | Least range 30 miles, not sighted. |
| 20. | 1402H 24 Dec. | 16-12N 118-28E | LIBERATOR | 12 miles | - | R | Least range 10 miles. |
| 21. | 0837H 25 Dec. | 16-15N 118-30 | Unknown | 30 miles | - | R | Least range 26 miles, plane not sighted. |
| 22. | 0826H 26 Dec. | 15-52N 118-32E | Unknown | 29 miles | - | R | Dove at range 6 miles, plane not sighted. |
| 23. | 0909H 26 Dec. | 15-51N 118-28E | Unknown | f 6 miles | 0 | R | Dove at range 4½ miles, plane not sighted. |
| 24. | 1528H 26 Dec. | 15-45N 118-28E | BETTY | 29 miles | - | R | Dove at range 7 miles, plane coming in, 0° angle on bow. Submerged. |
| 25. | 0722H 28 Dec. | 14-53N 118-32E | LIBERATOR | 28 miles | 270 | R | Least range 15 miles. Plane not sighted. |
| 26. | 1432H 28 Dec. | 14-52N 118-30E | LIBERATOR | 37 miles | Var. | R | At range 15 miles plane headed toward. Dove at range of 6 miles. |

— page 122 —
U.S.S. HAMMERHEAD - Report of Third War Patrol.
(G) Aircraft Contacts (Continued)

| Con-tact No. | Time Date | Lat. Long. | Type | Ini-tial Range | Est. Course Speed | How Cont-acted | Remarks |
|---|---|---|---|---|---|---|---|
| 27. | 0750H 29 Dec. | 14-48N 118-42E | --- | 32 miles | - - | R | Least range 29 miles. Not sigh-ted. |
| 28. | 0845H 29 Dec. | 14-49N 118-37E | Unknown | 5 miles | - - | S | Headed toward ship. No pip on SD radar. |
| 29. | 1519H 29 Dec. | 14-52N 118-40E | Unknown | 28 miles | - - | R | Least range 24 miles. |
| 30. | 1731H 29 Dec. | 14-52N 118-37E | BETTY | 20 miles | - - | R | Headed toward ship. Dove. |
| 31. | 0652H 30 Dec. | 14-58N 118-42E | Unknown | 40 miles | - - | R | Range closing rapidly. Dove. |
| 32. | 1528H 30 Dec. | 14-58N 118-33E | LIBERATOR | 12 miles | - - | S-R | Not sighted by plane. |
| 33. | 1620H 30 Dec. | 14-55N 118-36E | CORSAIR | 10 miles | 100T - | S-R | Range closing rapidly. Submerged. |
| 34. | 0657H 31 Dec. | 14-57N 118-32E | CATALINA | 5 miles | - - | S | Small angle on bow. No pip on SD and no IFF return. Submerged. |
| 35. | 2345H 1 Jan. | 12-52N 115-10E | BETTY | 6,900 Yards | Var - | R(SJ) | Plane picked up bearing 190T and on port bow. Made a complete circle of ship at 7000-7500 yards. Then he began heading in for the kill. |
| 36. | 1145H 2 Jan. | 11-54N 113-40E | Unknown | 20 miles | - - | R | Dove when range reached 6 miles. |
| 37. | 0905H 3 Jan. | 11-31N 113-01E | Unknown | 15 miles | - - | R | Least range 15 miles. |

-30-

— page 126 —
Okay, I will transcribe the text from the provided image.

Here is the transcription:

**U.S.S. PANGBORN. Report of Third War Patrol.**

— page 136 —
U.S.S. HALIBUT
THIRD WAR PATROL
THIRD ATTACK
December 18, 1944.

FIRING POINT - 13°04'N.
DEPTH OF WATER - 117°17'E.
SEA FORCE - 3 - 2300F.

[HANDWRITTEN: 234]
[HANDWRITTEN: 222]
[HANDWRITTEN: 233]
[HANDWRITTEN: 222]
[HANDWRITTEN: 233]
[HANDWRITTEN: 222]
[HANDWRITTEN: CONVOY'S COURSE 340°]
[HANDWRITTEN: X]
[HANDWRITTEN: TORP'S]
[HANDWRITTEN: HITS]
[HANDWRITTEN: MC HITS]

SCALE - 1 inch = 1 mile.

1 A.K.
1 Tanker
2 Escorts

-44-

— page 137 —
3 Tankers
3 Escorts
Base Course 0200
Speed: 8.5 knots

Firing Point 4°12' N.
111°30' E.
Depth of water - 33f.
Scale - 1 inch = 2 miles
All times - HOW

[HANDWRITTEN: 2105]
[HANDWRITTEN: 2330]
[HANDWRITTEN: 2120]
[HANDWRITTEN: FIRED]
[HANDWRITTEN: #1-#4]
[HANDWRITTEN: 2240]
[HANDWRITTEN: 2249 FIRED #7-#8]
[HANDWRITTEN: 0112]
[HANDWRITTEN: 0009]
[HANDWRITTEN: 0030]
[HANDWRITTEN: 2 HITS]
[HANDWRITTEN: SUNK ONE LARGE]
[HANDWRITTEN: TANKER]

U.S.S. HAMMERHEAD
THIRD WAR PATROL
ATTACK #1 & #2
December 7 & 8, 1944.
RESULTS:
SUNK ONE LARGE
TANKER

-45-

— page 138 —
FC5-26/A16-3
Serial (30)
DECLASSIFIED

FIRST ENDORSEMENT To
USS HAMMERHEAD ltr. SS364/A16-3 dated
17 January 1945 - Report of Third War Patrol.

From: The Commander Submarine Squadron TWENTY SIX.
To : The Commander in Chief, UNITED STATES FLEET.
Via : (1) The Commander Submarines, SEVENTH FLEET.
(2) The Commander, SEVENTH FLEET.

Subject: USS HAMMERHEAD (SS364) - Report of Third War Patrol.

1. The Third War Patrol of HAMMERHEAD covered a period of 53 days, 40
of which were spent north of the Malay Barrier, and 13 days in transit to and from
the area. During a part of this period HAMMERHEAD was one of a Coordinated Attack
Group consisting of HAMMERHEAD, LIPON, and PADDLE, with the Commanding Officer
HAMMERHEAD as Group Commander. This group functioned as such for only 5 days due
to subsequent orders.

2. Area coverage, although hampered by unusually bad weather, was good.
Only seven ship contacts were made, two of which were worth while torpedo targets.
Both of these developed into attacks, in which a total of 21 torpedoes were fired
for a total of 2 hits. There was no indication of erratic torpedo performance,
although rough seas may have been the cause of failure to hit in one case.
It appears that a combination of control errors, and firing "on the knuckle"
contributed to the large incidences of misses.

Torpedo attack No. 1. On the night of 7 December, a night surface attack was
made on a convoy consisting of 3 escorted AO's, previously contacted and reported
by HINGO, in whose area the action occurred. Four torpedoes forward and two aft
were fired at the last oiler in column, and all missed. The target was observed
to change course immediately after the first four were fired, and the last two
torpedoes were fired from the stern tubes at a range of 4200 yards. Considering
the urgency, and the somewhat excessive range, it is likely that the latter
two misses were due to miscalculation of target course and speed.

Torpedo attack No. 2. One hour and twenty minutes after unsuccessful attack,
a second surface attack was made on the same convoy, and nine torpedoes were fired
at a large tanker, similar in appearance but much larger than the NIKKO MARU. As
events proved, the three torpedoes fired from aft were unnecessary as two from the
forward salvo hit and the tanker, obviously gasoline loaded, immediately exploded.
During all this time HINGO was being chased by two escorts and PADDLE was engaged
in sinking a tanker and a CHIDORI. As HAMMERHEAD had no indication of PADDLE's
attack and the chase on escorts present did not jibe with HINGO's report of two on
her, it appears that PADDLE and HINGO must have been working on another convoy
section some distance away.

Torpedo Attack No. 3. On the night of 18 December a surface attack was made
on a convoy previously reported by LIPON. The convoy consisted of one AK, one AO,
and two escorts. From a favorable firing position, range about 3500 yards, six
torpedoes were fired to cover both the AK and the AO. All torpedoes missed. LIPON
later fired nine torpedoes at same convoy with negative results. High seas may
have been the contributing cause of the lack of results in this attack.

- 1 -
SUBMARINE SQUADRON TWENTY SIX
Care of Fleet Post Office,
San Francisco, California,

[STAMP: 1945 JAN 26]
2 02176

— page 139 —
FC5-26/A16-3
Serial ( )
[STAMP: DECLASSIFIED L]

SUBMARINE SQUADRON TWENTY SIX
Care of Fleet Post Office,
San Francisco, California,

FIRST ENDORSEMENT To
USS HAMMERHEAD ltr. SS364/A16-3 dated
17 January 1945 - Report of Third War Patrol.
Subject: USS HAMMERHEAD (SS 364) - Report of Third War Patrol.

The state of the weather and the belief that he should return to his assigned
patrol station prior to dawn, coupled with the fact that he had only three torpedoes
remaining influenced the Commanding Officer in abandoning further pursuit of this
convoy and returning to station.

3. HAMMERHEAD returned to Fremantle, W.A., in good material condition.
The cause of excessive lubricating oil consumption has been determined and will be
remedied. Refit will be accomplished by ANTHEDON and Submarine Division 261 Relief
Crew in regular refit period.

4. The Squadron Commander congratulates the Commanding Officer, officers,
and crew of HAMMERHEAD on completion of another successful patrol, replete with
bad weather and many torpedo misses; may the next patrol witness a return to
HAMMERHEAD's fine record of high percentage of hits.

[HANDWRITTEN SIGNATURE: L. J. Huffman]
L. J. HUFFMAN.

— page 140 —
FE24-71/A16-3
Serial 0268
[STAMP: c-DECLASSIFIED -L]

UNITED STATES NAVY
[STAMP: 3 02476]
14/hr
7 February 1945.

SECOND ENDORSEMENT to:
USS HAMMERHEAD Conf. Ltr.
A16-3, dated 17 January
1945. Report of Third
War Patrol.

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

Subject: U.S.S. HAMMERHEAD (SS364) - Report of Third War
Patrol - Comment on.

1. The Third War Patrol of the HAMMERHEAD, under the
command of Commander J. C. MARTIN, U.S.N., was conducted in the
areas of the SOUTH CHINA SEA, as one of a Coordinated Search and
Attack Group consisting of HAMMERHEAD (OTC), LAPON and PADDLE.

2. The first attack, on 7 December, was one of a series
of coordinated attacks by MINGO, PADDLE and HAMMERHEAD. At 2245,
despite materiel difficulties with the range step on the SJ radar,
HAMMERHEAD closed the target and fired four Mk-18 and two Mk-18
torpedoes with a mean run of approximately 4,500 yards. All
missed. At 2322 MINGO reported that she was being driven away from
the convoy by two pursuing escorts. HAMMERHEAD made his second
attack at 0005, with six Mk-23 and three Mk-18 torpedoes, mean run
approximately 4,000 yards. Two hits blew up the target which
was observed to be an AO. The third attack took place on 18
December when six torpedoes were fired with a run of 3,600 yards.
No hits resulted. All attacks were night surface radar attacks.

3. Reconnaissance duty was performed from 16 December
to 3 January in support of PHILIPPINE invasion operations.

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

5. The Force Commander congratulates the Commanding
Officer, Officers, and Crew of the HAMMERHEAD upon their perfor-
mance of reconnaissance duty and upon inflicting the following
damage on the enemy:

[HANDWRITTEN: 27754]
- 1 -

— page 142 —
UNITED STATES FLEET
COMMANDER SEVENTH FLEET

A16-3(8)(F-3-4/eeh)
Serial: [HANDWRITTEN: 02392]
[HANDWRITTEN: 142]
[HANDWRITTEN: 3 82176]
Reg. No. [HANDWRITTEN: OM-4122 (ON-03171)]
R. S. No. [HANDWRITTEN: 5] MAR 1945

[STAMP: DECLASSIFIED]
THIRD ENDORSEMENT to:
CO, USS HAMMERHEAD conf
ltr A16-3 dated 17 Jan.,
1945.Third War Patrol

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

Subject: U.S.S. HAMMERHEAD (SS364) - Report of Third
War Patrol.

1. Forwarded.

[SIGNATURE: R. H. Cruzen]
R. H. CRUZEN,
By direction.

— page 144 —
START OF REEL
JOB NO. [HANDWRITTEN: B11-96-67-1]

| 1.0 | 2.8 | 2.5 | OPERATOR [HANDWRITTEN: Brooke]
|     | 3.15| 2.2 |
| 1.1 | 3.5 | 2.0 |
|     | 4.0 |     |
|     | 4.5 | 1.8 |
| 1.25| 1.4 | 1.6 | DATE [HANDWRITTEN: 5-15-67]

THIS MICROFILM IS
THE PROPERTY OF
THE UNITED STATES
GOVERNMENT

[SEAL: DEPARTMENT OF DEFENSE, UNITED STATES OF AMERICA]

MICROFILMED BY
DEFENSE PRINTING SERVICE-WASHINGTON
MICROFILM SECTION

REEL TARGET, START & END
NAVEXOS 3968

— page 145 —
SS364/A16-3
Serial (02-45)

- DECLASSIFIED

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

Via: (1) Commander Submarine Division TWO SIXTY-ONE.
(2) Commander Submarine Squadron TWENTY-SIX.
(3) Commander Submarines SEVENTH FLEET.

Subject: U.S.S. HAMMERHEAD (SS364) - Report of War Patrol Number FOUR.

Enclosure: (a) Subject Report
(b) Track charts for subject report (Commander Submarines
SEVENTH FLEET Only.

1. Enclosure (A) covering the FOURTH War Patrol of this vessel
conducted in the South China Sea during the period 10 February, 1945 to 3 March,
1945 is forwarded herewith.

U.S.S. HAMMERHEAD
Care of Fleet Post Office
San Francisco, California.
6 April 1945.

W. A. WHITMAN
for
G. H. LAIRD.

[STAMP: DECLASSIFIED ART. 0445, OPNAVINST 5510.10]
BY [HANDWRITTEN: JLC] DATE [HANDWRITTEN: 5-11-67]

[HANDWRITTEN: 122766]

[HANDWRITTEN: 6 0823]

— page 149 —
[HANDWRITTEN: CONFIDENTIAL]
[HANDWRITTEN: -----]
DECLASSIFIED
Subject: U.S.S. HAMMERHEAD - Report of War Patrol Number Four.

— page 152 —
## The Hammerhead's War Patrol: A Glimpse into Submarine Warfare

This document, a page from the U.S.S. HAMMERHEAD's War Patrol Number Four report, offers a fascinating, albeit brief, insight into the daily life and encounters of a submarine crew during World War II. The entries, dated February 26th, 27th, and 28th, 1945, detail a series of events ranging from enemy aircraft sightings and depth charge attacks to rendezvous with other Allied vessels and investigations of unidentified contacts.

**February 26, 1945:**
The day begins with a tense encounter at 1428 hours. The HAMMERHEAD sights a Japanese "BETTY" aircraft two miles away, emerging from a cloud. The submarine submerges for one hour, but fortunately, the aircraft does not attack. This highlights the constant threat posed by enemy air patrols and the necessity for quick evasive action.

**February 27, 1945:**
The 27th is marked by a "day dive, due to heavy seas" at 0057, indicating challenging weather conditions. The submarine surfaces at 1919. Later, at 2210, the HAMMERHEAD effects a rendezvous with the U.S.S. BAYA, another submarine, exchanging information and patrol stations. This suggests a coordinated effort between submarines in the area. The entry notes that the HAMMERHEAD is now inshore, while the BAYA is offshore. The day

— page 154 —
DECLASSIFIED -L
Subject: U.S.S. HAMMERHEAD - Report of War Patrol Number Four.

(C) WEATHER

     All weather was normal for this season and for the areas passed
     through.

(D) TIDAL INFORMATION

     A southerly set from 180° to 200° was experienced off Cape Varella
     and Hongom Peninsula. A drift of 2 to 3.5 knots existed 2 to 5
     miles off-shore, which dropped to 1 knot 30 miles off-shore.

(E) NAVIGATIONAL AIDS

     The LORAN equipment was successfully used to obtain latitude lines
     within 200 miles south of LOMBOK Straits. No new navigational aids
     were sighted.

-9-

— page 156 —
DECLASSIFIED
Subject: U.S.S. HAMMERHEAD - Report of War Patrol Number Four,
AIRCRAFT CONTACTS

| No. | Date | Time | Lat. | Long. | Type (Aircraft) | Initial Range | How Contacted | Remarks |
|---|---|---|---|---|---|---|---|---|
| 1. | 2/10/45 | 1220 | 6-10S | 115-59E | 2 engine l.w. ringed medium bomber JAKE | 15 miles | SD radar | Plane when first sighted was 15 miles away. He did not think he saw us. |
| 2. | 2/16/45 | 1220 | 6-17S | 117-37E | UNIDENT. | 7 miles | Sight | Submerged, he apparently did not see us. |
| 3. | 2/16/45 | 1502 | 6-17S | 117-37E | KATE | 4 miles | Sight | Both were patrolling ahead of a convoy. |
| 4. | 2/16/45 | 1504 | 6-17S | 117-37E | 1-JAKE 1-RUFE UNIDENT. | 5 miles | Periscope | 2 minutes after contact had pla SD at 6 miles. |
| 5. | 2/23/45 | 1005 | 12-46N | 109-31E | UNIDENT. | 6 miles | A.P.R. | Soon disappeared. |
| 6. | 2/23/45 | 2005 | 12-31N | 109-50E | 2 BETTYS | 5 miles | Periscope | Soon disappeared. |
| 7. | 2/24/45 | 0808 | 12-41N | 109-31E | 1 MAVIS | 5 miles | Periscope | Patrolling ahead of convoy. |
| 8. | 2/24/45 | 1145 | 12-35N | 109-30E | 2 Jakes | 5 miles | Periscope | He did not close in. |
| 9. | 2/24/45 | 1345 | 12-35N | 109-31E | UNIDENT. | 22 miles | SD radar | Lost contact at 1135. |
| 10. | 2/25/45 | 1057 | 12-55N | 110-31E | 1 BETTY | 10 miles | SD radar | Submerged when he closed to 7 miles. |
| 11. | 2/25/45 | 1128 | 12-50N | 110-31E | | | | | |
| 12. | | | | | | | | |

-11-

— page 160 —
## The following is a transcription of the provided image:

[STAMP: DECLASSIFIED]

Subject: U.S.S. HAMMERHEAD - Report of War Patrol Number Four.

— page 163 —
DECLASSIFIED
Subject: U.S.S. HAMMERHEAD - Report of War Patrol Number Four.

(P) HEALTH, FOOD AND HABITABILITY

     Health, food and habitability were normal and satisfactory.

(Q) PERSONNEL

     (a) Number of men on board during patrol                     73
     (b) Number of men qualified at start of patrol.              57
     (c) Number of men qualified at end of patrol.                57
     (d) Number of unqualified men making their first patrol.     14
     (e) Number of men advanced in rating during patrol.           0

     With the exception of one unfortunate incident when a throttleman
     did not properly secure #1 and #2 M.E.'s on surfacing, the perfor-
     mance and the training of both officers and men are excellent.

(R) MILES STEAMED

     Fremantle W.A. to area     1715 pat log miles     FUEL USED
     In area                    3710 "   "   "         17,400 gallons
     Area to                      65 "   "   "         39,850 gallons
                                                       1,135 gallons

(S) DURATION

     Days enroute to area                               6
     Days in area                                      16
     Days enroute to base                               0
     Days submerged                                     2

(T) FACTORS OF ENDURANCE REMAINING

     Torpedoes (7-Mk 18-1, 12-Mk 14-3A)                19
     Fuel                                              53,900 gallons
     Provisions for                                    49 days
     Personnel Factor

     Limiting factor this patrol:
     Illness of Commanding Officer.

-18-

— page 164 —
[STAMP: DECLASSIFIED]
[HANDWRITTEN: 1-1]

Subject: U.S.S. HAMMERHEAD - Report of War Patrol Number Four.

— page 166 —
[FADED TYPED: SECRET]
F05-26/A16-3
Serial (084)
[FADED TYPED: DECLASSIFIED]
[STAMP: DECLASSIFIED]

SUBMARINE SQUADRON TWENTY SIX

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

[FADED TYPED: ENDORSEMENT to:]
F05-26/A16-3
Serial (02-45)
of 6 April 1945,

From: Commander Submarine Squadron TWENTY SIX.
To : Commander in Chief, UNITED STATES FLEET.
Via : (1) Commander Submarines, SEVENTH FLEET.
(2) Commander SEVENTH FLEET.

Subject: U.S.S. HAMMERHEAD (SS364) - Report of Fourth War
Patrol.

1. The fourth war patrol of the U.S.S. HAMMERHEAD was conducted
in the South China Sea off the east coast of French Indo China from 10
February 1945 to 3 March 1945, under command of Commander George H. LAIRD,
U.S. Navy. Seven days were spent in the assigned area, five days of which
were submerged. The patrol was terminated due to the necessity for reliev-
ing the Commanding Officer because of illness.

2. During this patrol HAMMERHEAD and BAYA alternated in inshore
submerged and offshore surface patrol. Better coverage would have resulted
if HAMMERHEAD had patrolled closer to the beach when it was her turn to
cover the inshore traffic routes. Four ship contacts were made, two of which
were suitable torpedo targets, all inshore of HAMMERHEAD, and only one vessel
was closed for attack.

TORPEDO ATTACK No. 1. A convoy consisting of a small AK escorted by two
PG(E)-1 escort vessels, was detected by sound then sighted on a northerly
course around Doi Moi Island. Four steam torpedoes were fired from the star-
board screen from the bow tubes on a two degree port track. Two timed hits
were heard which immediately stopped the pinging and screws and character-
istic breaking-up noises followed. The most conclusive evidence of the sink-
ing was the failure of the escort to conduct the depth charge attack.

3. HAMMERHEAD returned from patrol clean and in good material con-
dition with the exception of evaporators and master gyro compass. Voyage
repairs will be completed by U.S.S. GRIFFIN (AS13) and underway training
given the new Commanding Officer before departure on patrol. Health and morale
of the crew were very good.

4. It is regretted that the illness of Commander George H. LAIRD
terminated his command of HAMMERHEAD during the early stage of her fourth
war patrol. The Squadron Commander congratulates the Commanding Officer,
officers, and crew on the damage inflicted on the enemy.

B. E. BACON, Jr.

6 0823

— page 167 —
FE24-71/A16-3
Serial 0794
DECLASSIFIED I-A-L
UNITED STATES NAVY
1 May 1945
14/PP

SECOND INDORSEMENT to:
USS HAMMERHEAD Conf. Ltr.
A16-3 Serial 02-45 dated
6 April 1945. 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. HAMMERHEAD (SS364) - Report of Fourth War
Patrol - Comment on.

1. The Fourth War Patrol of the HAMMERHEAD, under the
command of Commander C. H. LAIRD, U.S.N., was of twenty-one days
duration, and was conducted in the general vicinity of CAPE VARELLA.
HAMMERHEAD (OTC) coordinated her patrol with RAY during the period
from 21 to 28 February on which date the illness of the Commanding
Officer necessitated termination of the HAMMERHEAD's patrol.

2. On 23 February, HAMMERHEAD dived at dawn to conduct
a submerged patrol off CAPE VARELLA. However, the prevailing cur-
rent at this season is so strong that by 1010 the ship was nearing
DOI MOI ISLAND, about fifteen miles south of the diving point. At
this time a convoy was sighted consisting of one small AK and two
escorts which were carefully searching water near the coast and
occasionally swinging to seaward to sweep. For the next hour the
HAMMERHEAD concentrated her attention on the small AK, but at 1110,
on a periodic seaward sweep, one DE escort presented a perfect
down-the-throat setup. HAMMERHEAD fired four torpedoes and sank
the DE with two hits. This attack took place approximately one mile
off DOI MOI ISLAND.

3. Three other worthwhile targets could not be closed
because they were reported to have been hugging the indented and
shallow coastline between CAPE VARELLA and DOI MOI ISLAND.

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

5. The Force Commander congratulates the Commanding
Officer, Officers and Crew of the HAMMERHEAD upon the completion
of this short but active patrol during which the following damage
was inflicted upon the enemy:

6 0823
- 1 -

— page 168 —
F24-71/A16-3
Serial 0794
DECLASSIFIED IAL
UNITED STATES NAVY
1 May 1945

SECOND ENDORSEMENT to:
USS HAMMERHEAD Conf. Ltr.
A16-3 Serial 02-45 dated
6 April, 1945. Report of
Fourth War Patrol.

Subject: U.S.S. HAMMERHEAD (SS364) - Report of Fourth War
Patrol - Comment on.

S-U-N-K

[HANDWRITTEN: 200 Tons]
[HANDWRITTEN: Names for]
[STAMP: ORIGINAL COPY]

1 - DE (EU)

DISTRIBUTION:
Cominch (3) Direct
Vice Opnav (2) Direct
Vice Opnav Op-23C (1)
ComlstFlt (1)
Com2ndFlt (1)
Com7thFlt (2)
ComSubslstFlt (30)
ComSubs2ndFlt (4)
CTF-71 (7)
CTG-71.5 (2)
CTG-71.8 (2)

ComSubRon-22 (2)
ComSubRon-26 (2)
ComSubRon-30 (2)
DivComSubRon-22 (1 ea)
DivComSubRon-26 (1 ea)
DivComSubRon-30 (1 ea)
S/M School, N.L. Conn. (2)
Comdt. NMD. Puget Sound (1)
SubAd, Mare Island (1)
S/Ms 7thFlt (2)

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

THIS REPORT WILL BE DESTROYED PRIOR TO
ENTRY INTO NEW CO. ROLLED FILES.

[HANDWRITTEN: 38558]

[HANDWRITTEN: - 2 - 6 0823]
[HANDWRITTEN: 20]

— page 169 —
UNITED STATES FLEET
COMMANDER SEVENTH FLEET F.S. No.
A16-3(2) (F-3-4/whr)
Serial 0 3 / 5 4

[STAMP: DECLASSIFIED]

THIRD ENDORSEMENT on:
USS HAMMERHEAD Conf. Ltr.
Serial 02-45 dated 6
April 1945.

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

Subject: U.S.S. HAMMERHEAD (SS364) - Report of Fourth
War Patrol - Comment on.

1. Forwarded.

2. The Commander Seventh Fleet congratulates the
HAMMERHEAD, and notes with satisfaction that another
valuable Jap escort vessel has been destroyed.

[SIGNATURE: Thos. S. Combs]
THOS. S. COMBS
Chief of Staff.

Copy to:
ComSubs7thFlt
ComSubRon 26
CO, USS HAMMERHEAD (SS364)
F.S. No.
6 0823

[STAMP: 26 MAY 1945]

— page 170 —
SS364/A16-3
Serial (03-45)
[STAMP: DECLASSIFIED]

DECLASSIFIED PER O.A.S. [UNCLEAR: CONWAY] 510 IC
BY [HANDWRITTEN: JHC] DATE [HANDWRITTEN: 5-1-67]
U.S.S. HAMMERHEAD
Care of Fleet Post Office
San Francisco, California.

6 April 1945.

From: Commanding Officer.
To : The Commander-in-Chief, United States Fleet.
Via : (1) Commander Submarine Division TWENTY-ONE.
      (2) Commander Submarine Squadron TWENTY-ONE.
      (3) Commander Submarines SEVENTH FLEET.
Subject: U.S.S. HAMMERHEAD (SS364) - Report of War Patrol Number FIVE.
Enclosure: (A) Subject Report.
           (B) Track Charts for Subject report (Commander Submarines
               SEVENTH Fleet Only).

1. Enclosure (A) covering the FIFTH War Patrol of this vessel
conducted in the South China Sea during the period 10 March to 6 April, 1945
is forwarded herewith.

F. M. SMITH.

[HANDWRITTEN: 122713]
[STAMP: 6 0825]

— page 174 —
[STAMP: DECLASSIFIED - L]
Subject: U.S.S. HAMMERHEAD - [REDACTED] Report of [REDACTED] Patrol Number FIVE.

— page 177 —
A. The provided image is a scan of a document titled "U.S.S. HAMMERHEAD - Report of War Patrol Number FIVE." It contains a log of events for March 28th and 29th.

Here is the transcription of the text from the image:

[STAMP: DECLASSIFIED]
Subject: U.S.S. HAMMERHEAD - Report of War Patrol Number FIVE.

— page 181 —
[STAMP: DECLASSIFIED]
[HANDWRITTEN: 88]
T-I-A-L

Subject: U.S.S. HAMMERHEAD - Report of War Patrol Number FIVE.

(C) WEATHER
    All weather encountered was normal for this area during
    the current season.

(D) TIDAL INFORMATION

    12 March to 30 March

    Within 10 miles of the coast the current sets 150 to 180 with
    a drift of 1 to 2.5 kts. Offshore the set was southerly
    averaging 1 knot drift.

    31 March to 4 April

    Average current along the coast dropped to 1 knot. and
    to .2 knots outside of 10 miles.

(E) NAVIGATIONAL AIDS

    No new navigational aids were noted.

-10-

— page 182 —
[STAMP: DECLASSIFIED]
Subject: U.S.S. HAMMERHEAD - Report of War Patrol Number VII.

(F) SHIP CONTACTS

| NO. | TIME & DATE | LAT. & LONG. | TYPE(S) | INITIAL RANGE | ESTIMATED COURSE & SPEED | HOW CONTACTED | REMARKS |
|---|---|---|---|---|---|---|---|
| 1. | 0022 | 14-59N | 1-AH | 13½ | 010° | Sight | He was properly lighted |
| | 3/12 | 110-44E | | miles | 11 Kts | (Binoculars) | and used 10 cm radar |
| | | | | | | | twice for short interv- |
| | | | | | | | als. |
| 2. | 1725 | 14-06N | Periscope of UNI- | 1500 | --- | --- | He turned away and ran |
| | 3/21 | 109-44E | DENT submerged | yards | | | at high speed. |
| | | | submarine. | | | | |
| 3. | 0305 | 15-28N | Two DE's | 8000 | 145° | SJ radar | Fired 4 torpedoes at |
| | 3/26 | 108-56E | | yards | 12 Kts | | trailing ships, all |
| | | | | | | | missed probably due to |
| | | | | | | | the heavy seas. |
| 4. | 0405 | 14-40N | Convoy, 1-AO, 5 es- | 18,500 | 345° | SJ radar | Sank one DD similar to |
| | 3/29 | 109-10E | corts. Possibly 2 | yards | 10 Kts | | HIMI group. |
| | | | additional escorts. | | | | |
| 5. | 0013 | 14-16N | Periscope of | 26,000 | 170° | Sight | Properly lighted, using |
| | 3/30 | 109-44E | UNIDENT submerged | yards | 11 Kts | | 10 cm radar continu- |
| | | | submarine. | | | | | ously. |
| 6. | 1713 | 14-44N | Periscope of | 3000 | --- | Sight | He cleared area at |
| | 4/5 | 118-21 | UNIDENT submerged | yards | | | high speed zigzagging. |
| | | 5E | submarine. | | | | |

-11
6 0826

— page 184 —
DECLASSIFIED

subject: U.S.S. HAMMERHEAD - Report of War Patrol Number FIVE.
(C) AIRCRAFT CONTACTS (Continued).

| NO. | TIME (H) DATE | LAT. & LONG. | TYPE(S) | ESTIM. INITIAL RANGE | COURSE & SPEED | HOW CONTACTED | REMARKS |
|---|---|---|---|---|---|---|---|
| 16. | 1615 3/27 | 14-11N 109-44E | 1-UNIDENT | 12 Miles | | SD radar | Range opened to 13 miles where contact was lost. |
| 17. | 1055 3/29 | 14-40N 109-27E | 1-UNIDENT | 4.5 miles | | SD radar | Submerged, not sighted. |
| 18. | 1305(I) 4/4 | 14-20N 110-21E | Possibly 1 PB4Y | 3 miles | 090° 200 | Sight | He was headed towards us at low altitude so submerged. |
| 19. | 2010(I) 4/4 | 14-23N 114-22E | 1 Liberator | 5 miles | | Sight | Communicated by VIF. |
| 20. | 0915(I) 4/5 | 14-47N 114-29E | 1 PBM | 8 miles | | Sight | Fired recognition flares. |

- 13 -
6 0826

— page 186 —
DECLASSIFIED

Subject: U.S.S. ELMERFELD - Report of War Patrol Number FIVE.

(H) ATTACK DATA (Continued)

|                       | #1      | #2      | #3      | #4      |
| :| :------ | :------ | :------ | :------ |
| TUBES FIRED:          |         |         |         |         |
| TRACK ANGLE:          | 110 P   | 109 P   | 109 P   | 117 P   |
| GYRO ANGLE:           | 349     | 347     | 350     | 342     |
| DEPTH SET:            | 6       | 6       | 6       | 6       |
| POWER:                | High    | High    | High    | High    |
| HIT OR MISS:          | Miss    | Miss    | Miss    | Miss    |
| ERRATIC(YorN)         | No      | No      | No      | No      |
| MARK TORPEDO:         | 14-3A   | 14-3A   | 14-3A   | 14-3A   |
| SERIAL NO.            | 63911   | 63932   | 63947   | 63930   |
| MARK EXPLODER:        | 6-5     | 6-5     | 6-5     | 6-5     |
| SERIAL NO.            | 32575   | 25732   | 32631   | 26857   |
| ACTUATION SET:        | Contact | Contact | Contact | Contact |
| ACTUATION ACTUAL:     | None    | None    | None    | None    |
| MARK WARHEAD:         | 16-1    | 16-1    | 16-1    | 16-1    |
| SERIAL NO.            | 16672   | 16630   | 13024   | 14793   |
| EXPLOSIVE:            | Torpex  | Torpex  | Torpex  | Torpex  |
| FIRING INTERVAL:      | -       | 9       | 8       | 10      |
| TYPE SPREAD:          | 1R      | 1L      | 3½R     | 3½L     |

SEA CONDITIONS: No. 5 sea.

OVERHAUL ACTIVITY - U.S.S. ANTHEDON.

REMARKS: Shallow draft of Target and heavy seas caused
         torpedoes to run under target.

-15-

— page 189 —
DECLASSIFIED
Subject: U.S.S. HAMMERHEAD - Report of War Patrol Number FIVE.

(I) MINES

This vessel carried out no mining activities. No evidence was seen
of enemy mines or mining activities.

(J) ANTI-SUBMARINE MEASURES AND EVASION TACTICS

Five escorts of the convoy encountered on 29 March were pinging long
scale and hand. After the attack, a team of two escorts conducted
search. Sometimes one and sometimes both pinged. Short scale was
not used. Depth charges were generally two per run with exception
of one run, which both of us probably thought was good, a pattern
of twenty was dropped.

During moonlight on morning of 3 April made radar contact on a
target at 16,000 yards. Target was tracked between 16,000 and
20,000 yards with a good pin. Speed was zero, target was about 3
miles northeast of NUOK ISLAND. Due to enemy submarine activity,
commenced approach at good speed and pinging. On two occasions
observed definite signalling in direction of target and NUOK Light-
house. Radar interference, appearing as SJ, from direction of
target. SJ challenge not answered. At 9,000 yards, target clearly
seen to be about 40-50 foot sailboat of the kind that is normally
given us a best range of 8,000 yards. Highly suspecting submerged
submarine in area, cleared the scene. About fifteen minutes prior
to dawn the sailboat had a speed of five knots. Radar pip decreas-
ed and disappeared rapidly. It is believed a sailboat had radar
tar of hoisted, which he hauled in prior to dawn, and was operating
in conjunction with an enemy submarine.

(K) MAJOR DEFECTS AND DAMAGE

1. Kleinschmidt Evaporators.
After routine acid bath cleaning by GRIFFIN on 5 March the stills
made battery water from sea water for only one week. Then it was
necessary to make battery water from fresh water. This same trouble
was experienced after the ANTHELDON routine then on 1 February
and pronounced them in good shape. Both were more operated in
accordance with existing approved instructions.

2. SJ Radar
A great deal of intermittent vertical jitter is present on "A"
scope. At times it was bad enough to temporarily block out pips.

3. Forward Gyro Regulator
In the forward controller relay, piece No. 213258, the tension
spring conductor broke - thus putting the regulator motor out of
commission. Gyros were set by hand for attack #2.

-18-

— page 198 —
FC5-26/416-3
Serial (083 )
RECLASSIFIED

SUBMARINE SQUADRON TWENTY SIX

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

FIRST ENDORSEMENT to
USS HAMMERHEAD Ltr.
A16-3 Serial (03-45)
of 6 April 1945.

From: Commander Submarine Squadron TWENTY SIX.
To : Commander in Chief, UNITED STATES FLEET.
Via : (1) Commander Submarines, SEVENTH FLEET.
(2) Commander SEVENTH FLEET.

Subject: U.S.S. HAMMERHEAD (SS364) - Report of Fifth War
Patrol.

1. The fifth war patrol of the U.S.S. HAMMERHEAD was conducted in
the South China Sea off the east coast of French Indo China from 10 March
1945 to 5 April 1945, under command of Commander F. U. CONRAD, U.S. Navy, his
first patrol as commanding officer. Twenty-four days were spent in the area,
nine of which were submerged.

2. The patrol was coordinated with GUAVINA and later with GUINARD.
The area was covered thoroughly during this patrol, submerged patrol was gen-
erally within five miles of the beach and with few exceptions, surface patrol
was within fifteen miles. Of the six ship contacts, two were properly mark-
ed hospital ships, two were periscopes of unidentified submarines and torpedo
attacks were made on the remaining two.

TORPEDO ATTACK No. 1. Two DEs in column on base course 130° were contacted
by radar. After tracking for almost two hours a surface radar attack was
made on the trailing ship while GUINARD was attacking the leading ship.
Four steam torpedoes were fired from the bow tubes at a range of 2600 yards.
All torpedoes missed probably due to the six-foot depth setting necessitated
by the sea conditions.

TORPEDO ATTACK No. 2. Radar contact was made on a tanker, an unidentified
ship and at least five escorts, one of which was identified as a DD and two
as DEs. A surface and radar depth approach was made and, after being driven
deep by escorts, three bow torpedoes were fired at a HIBIKI type DD. One
torpedo hit and sank the target.

TORPEDO ATTACK No. 3. Immediately following the attack on the DD, HAMMERHEAD
swung 55° to the left and fired the remaining bow tubes at a DE which was
swinging towards the scene of the attack. An explosion which could have been
a torpedo hit was heard but the target was not observed because of a second
DE closing for attack which subsequently dropped 37 depth charges, fortun-
ately no major damage was inflicted on HAMMERHEAD.

- 1 -
G 0826

— page 199 —
FC5-26/A16-3
Serial ( 083 )
DECLASSIFIED -L

SUBMARINE SQUADRON TWENTY SIX
Care of Fleet Post Office,
San Francisco, California.
18 April 1945.

Subject: U.S.S. HAMMERHEAD (SS364) - Report of Fifth War
Patrol.

5. HAMMERHEAD returned from patrol clean and with the health and
morale of the crew good. Normal refit will be conducted by ANTHEDON and
Submarine Division 261 Relief Crew during which the coils of both Kleinschmidt
evaporators will be renewed.

6. The Squadron Commander congratulates the Commanding Officer on
the aggressive tactics and damage inflicted on his first patrol in command,
and the officers and crew of HAMMERHEAD on completion of another successful
patrol.

(
B. E. BACON, Jr.

— page 200 —
FE24-71/A16-3
Serial 0803
[STAMP: C-DECLASSIFIED]
UNITED STATES NAVY
14/hr
4 May 1945.

SECOND ENDORSEMENT to:
USS HAMMERHEAD Conf. Ltr.
A16-3 Serial 03-45 dated
6 April 1945. Report of
Fifth 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. HAMMERHEAD (SS364) - Report of Fifth War
Patrol - Comment on.

1. The Fifth War Patrol of the HAMMERHEAD, the first
in command for Commander F. M. SMITH, U.S.N., was conducted off
the coast of INDO-CHINA from 12 to 22 March. HAMMERHEAD was a
member of a Coordinated Group consisting of CAVALLA (OTC), and
HAMMERHEAD.

2. At 0315, on 29 March, under conditions of bright
moonlight, calm sea and good visibility, HAMMERHEAD observed un-
identified radar interference to the south. At 0405, this
developed into an enemy convoy, range 18,500 yards, steaming north
on a track about eight miles from the coast. HAMMERHEAD decided
that the situation called for immediate attack before the convoy
returned to the coast at dawn. At 0445, he sub-
merged, and at 0530 went to 120 feet and penetrated the outer screen
of escorts. At 0611 he was able to return to periscope depth and
place himself in position to fire three bow tubes at an escorting
DD, range 860 yards. The Commanding Officer observed the DD to
sink after one hit had broken her back. Seven minutes later, still
at periscope depth, three more torpedoes were fired, and one hit
damaged a DE. Not only is this attack of intrinsic interest, but
also it has the distinction of being the last submarine torpedo
attack (to date) on a convoy along the central part of the INDO-
CHINA coast; no enemy traffic having been observed since then.

3. HAMMERHEAD's experience with a radar equipped sail-
boat on 3 April is of interest, and the report under section (J) is
worthy of study.

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

- 1 G 0826
[STAMP: 38574]

— page 201 —
FE24-71/A16-3                                                              UNITED STATES NAVY                                                              14/hr
Serial 0803
[STAMP: DECLASSIFIED]

— page 202 —
A16-3(8)(F-3-4/bc)
Serial: o 3145

[STAMP: DECLASSIFIED]
THIRD ENDORSEMENT on:
USS HAMMERHEAD Conf. ltr.
A16-3 serial 03145 dated
6 April 1945. Report of
Fifth War Patrol.

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

Subject: U.S.S. HAMMERHEAD (SS364) - Report of Fifth
War Patrol.

1. Forwarded.

2. The Commander Seventh Fleet sends a well done
to the HAMMERHEAD for sinking another badly needed enemy des-
troyer. It is also noted with satisfaction that this is the
fifth consecutive successful patrol for this vessel.

[SIGNATURE: Thos. S. Combs]
THOS. S. COMBS
Chief of Staff.

Copy to:
ComSubRon 26
CO USS HAMMERHEAD (SS364)
ComSubs7thFlt

UNITED STATES FLEET
COMMANDER SEVENTH FLEET

[STAMP: Reg. No. 47]
[STAMP: R. S. No. 6 0825]

[STAMP: 26 MAY 1945]

— page 203 —
U.S.S. HAMMERHEAD
                                                                Care of Fleet Post Office,
                                                                San Francisco, California.
                                                                24 May 1945.

SS364
A13
Serial: (3-45)
[STAMP: DECLASSIFIED][HANDWRITTEN: 1]

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

Via :          (1) Commander Submarine Division THREE ZERO ONE.
               (2) Commander Submarine Squadron THIRTY.
               (3) Commander Submarines SEVENTH FLEET.

Subject:       U.S.S. HAMMERHEAD (SS364) - Report of War Patrol
               Number Six.

Enclosure:     (A) Subject report.
               (B) Track charts. (For Commander Submarines SEVENTH
                   FLEET only.).

               1. Enclosure (A), covering the sixth war patrol of this
vessel conducted in the Gulf of Siam during the period 30 April 1945
to 24 May 1945, is forwarded herewith.

                                                                F. M. SMITH.
                                                                Commander, U.S. Navy.

[STAMP: DECLASSIFIED ART 0445, OPNAVINST 5510.1C]
BY [HANDWRITTEN: JCC] DATE [HANDWRITTEN: 5-11-07]

[HANDWRITTEN: 130074]
                                                                3

— page 205 —
DECLASSIFIED
Subject: U.S.S. HAMMERHEAD (SS364) - Report of War Patrol Number Six.

4 May
1700: Entered area.
2100: Effected rendezvous with BAYA for delivery of mail and
      publications.

5 May
0744: Submerged to grind in safety tank blow valve.
1043: Surfaced.
1120: Sank an object which could have been anything from a mine to
      a hot water heater.
1125: Reversed course.

6 May
0245: Ship contact #1. SJ contact bearing 139° T., range 18,000
      yards. Commenced tracking. No moon but fairly clear.
0300: Three pips. Large, medium and small.
0309: Base course 270° T., radical zigs.
0330: Commenced approach. Have a loaded tanker with engines and
      superstructure aft similar to the type TM(Modified) Sugar
      Able Sugar (EU), 2,800 tons gross. One escort apparently a
      large PC, on his port quarter and one believed to be an SC or
      landing craft ranging on his starboard quarter..
0353: Commenced firing four Mk 18-2 torpedoes at tanker, torpedo
      run 3,500 yards, 87° S. track, 37° gyro, depth set 3 feet.
      Fired across bow of SC who was 1,000 yards from us. Saw him
      blink toward target as we turned to pull out. No hits. Range
      and gyros too large.
0355: Commenced reload.
0450: Commenced second approach, aided by a rain squall. Crossed
      close astern of the SC this time.
0501⁵⁵: Commenced firing four Mk 18-2 bow torpedoes at tanker, tor-
      pedo run 2250 yards, 125° S, track, depth set zero, small
      gyro.

5

— page 207 —
DECLASSIFIED [HANDWRITTEN: I-A-L]

Subject: U.S.S. HAMMERHEAD (SS364) - Report of War Patrol Number Six.

— page 210 —
DECLASSIFIED [HANDWRITTEN: 1]

Subject: U.S.S. HAMMERHEAD (SS364) - Report of War Patrol Number Six.

— page 217 —
The image provided is a scan of a document. I will transcribe all the text visible in the image.

DECLASSIFIED
1-L
Subject: U.S.S. HAMMERHEAD (SS364) - Report of War Patrol Number Six.

— page 221 —
DECLASSIFIED-1-
Subject: U.S.S. HAMMERHEAD (SS364) - Report of War Patrol Number Six.

(H) ATTACK DATA (Continued) ATTACK NO. 4.

| | NO. 7. | NO. 8. | NO. 9. |
|---|---|---|---|
| TUBES FIRED | | | |
| TRACK ANGLE | 96 S. | 97 S. | 103 S. |
| GYRO ANGLE | 176° | 184° | 192° |
| DEPTH SET | 2' | 2' | 2' |
| POWER | Hi | Hi | Hi |
| HIT OR MISS | Miss | Miss | Miss |
| ERRATIC (YorN) | No | No | No |
| MARK TORPEDO | 14-3A | 14-3A | 14-3A |
| SERIAL NUMBER | 66249 | 18071 | 66388 |
| MARK EXPLODER | 6-5 | 6-5 | 6-5 |
| SERIAL NUMBER | 26767 | 32525 | 20002 |
| ACTUATION SET | Contact | Contact | Contact |
| ACTUATION ACTUAL | --- | --- | --- |
| MARK WARHEAD | 16 | 16 | 16 |
| SERIAL NUMBER | 18180 | 17672 | 19236 |
| EXPLOSIVE | Tpx | Tpx | Tpx |
| FIRING INTERVAL | --- | 8 Sec. | 9 Sec. |
| TYPE SPREAD | 2 3/4 L. | 0 | 2 3/4 R. |
| SEA CONDITIONS | One | | |
| OVERHAUL ACTIVITY | U.S.S. ANTHEDON (AS24) | | |
| REMARKS | --- | | |

21

— page 225 —
[STAMP: DECLASSIFIED]
Subject: U.S.S. HAMMERHEAD (SS364) - Report of War Patrol Number Six.

(H) ATTACK DATA (Continued)                 ATTACK NO. 6.

                                            NO. 1.      NO. 3.      NO. 4.
TUBES FIRED
TRACK ANGLE                                 80 S.       78 S.       78 S.
GYRO ANGLE                                  10°         9°          7°
DEPTH SET                                   1'          1'          1'
POWER                                       ---         ---         ---
HIT OR MISS                                 Miss        Hit         Hit
ERRATIC (YorN)                              No          No          No
MARK TORPEDO                                18-2        18-2        18-2
SERIAL NUMBER                               57728       57886       57573
MARK EXPLODER                               8-7         8-7         8-7
SERIAL NUMBER                               10614       16466       11149
ACTUATION SET                               Contact     Contact     Contact
ACTUATION ACTUAL                            ---         Do          Do
MARK WARHEAD                                18-2        18-2        18-2
SERIAL NUMBER                               3473        1296        2723
EXPLOSIVE                                   Tpx         Tpx         Tpx
FIRING INTERVAL                             ---         10 Sec.     10 Sec.
TYPE SPREAD                                 2½ R.       0           2½ L.
SEA CONDITIONS                              One
OVERHAUL ACTIVITY                           U.S.S. ANTHEDON (AS24)
REMARKS                                     ---

25

— page 226 —
[STAMP: DECLASSIFIED] [HANDWRITTEN: D-L]
Subject: U.S.S. HAMMERHEAD (SS364) - Report of War Patrol Number Six.

— page 227 —
VLØ schedules were poor at all times in the Gulf of Siam
was 9250. NPT-1 schedules were poor at all times in the Gulf of Siam
and Java Sea; probably due to our location. Signal faded out about
1800 GCT and did not return till about 0000 GCT. Best frequency
9250 Kc, second best is 12,630, no others heard at all. A loud
foreign station broadcasts on about 9255 and interfers very much.
Reception south of the barrier was weak but readable at all times.
WolfPac frequency was good at all times.

(M) RADAR

SJ - Operation was exceptionally good. Had contact on 6,000 ton
AK and escort minelayer at 30,000 yards. Submarines up to 15,000
yards. Only trouble was all sweeps moving to the left, remedied by
replacing potentiometer R13 in range indicator with one of higher
resistance. The extreme ranges are believed due to atmospheric
conditions encountered in the Gulf of Siam. Communications by
radar were successful except for blowing #9 fuse several times.
Believe equipment to be underfused as this occurs only on starting
equipment or during current surge while keying. Land contacts were
good with range up to 95 miles on 2nd sweep echoes.

SD - Operation not too satisfactory. No aircraft contacts although
several were seen by lookouts. Contacted land at 1

— page 231 —
FC5-30/A16-3
Serial: 068
[STAMP: DECLASSIFIED]
FIRST ENDORSEMENT TO
CO HAMMERHEAD (SS364)'s
Report of Sixth War Patrol.

SUBMARINE SQUADRON THIRTY

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

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

Subject: U.S.S. HAMMERHEAD (SS364) - Report of Sixth War Patrol.

1. The sixth war patrol of the U.S.S. HAMMERHEAD conducted in the
Gulf of Siam, was of 25 days duration, 19 of which were spent in the assigned
area. The patrol was terminated by the expenditure of torpedoes. From 14 to
15 May, the HAMMERHEAD formed a coordinated attack group with the COBIA and
SUPREME of which the Commanding Officer of the COBIA was O.T.C.

2. Area coverage was excellent. Only three enemy air contacts were
made and these were air cover for ships sighted. Four ship contacts worthy of
torpedo fire were made, three of which were developed into attacks.

TORPEDO ATTACK NO. 1: On 6 May a night surface attack was made on a small tanker
with two escorts. Four Mk.18 torpedoes were fired on a favorable track, large
gyros, depth set 3 feet, torpedo run 3500 yards. No hits were obtained, prob-
ably due to excessive torpedo run.

TORPEDO ATTACK NO. 2: This attack was on same convoy as previously attacked.
Four Mk.18 torpedoes were fired on large track, small gyros, depth set five feet,
torpedo run 2250 yards. Two hits were obtained and the tanker blew up and sank
almost immediately.

TORPEDO ATTACK NO. 3: On 6 May a day periscope attack was made on a small trawler
escorted cargo ship. Four Mk. 18 torpedoes were fired on a favorable track, small
gyros, torpedo run 2300 yards, depth set zero, for no hits. The target undoubtedly
sighted these torpedoes long before they reached the target due to the shallow
depth setting used and successfully maneuvered to avoid.

TORPEDO ATTACK NO. 4: This attack immediately followed attack #3, on the same
ship. Three Mk. 14 torpedoes were fired on favorable track, small gyros, torpedo
run 1000 yards, depth set 2 feet. Target maneuvered to avoid and lightly depth
charged the HAMMERHEAD. The subject of attacks #3 and #4 was apparently the es-
corts of the tanker in attack #2.

TORPEDO ATTACK NO. 5: On 14 May a day periscope attack was made on a medium AK
with an air escort only. Surface escort which joined up later was apparently busy
with the COBIA at this time. Three Mk. 14 torpedoes were fired from a favorable
position for no hits. One apparent air flask explosion was noted.

- 1 -

— page 233 —
FE24-71/A16-3 UNITED STATES NAVY 12/hr
Serial 0109-A

DECLASSIFIED [STAMP: I-A-L]

SECOND ENDORSEMENT to: 17 June 1945.
USS HAMMERHEAD Conf. Ltr.
A13 Serial 3-45 dated
24 May, 1945. Report
of Sixth 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. HAMMERHEAD (SS364) - Report of Sixth War
Patrol - Comment on.

1. The Sixth War Patrol of the HAMMERHEAD under the com-
mand of Comdr. F. M. SMITH, U.S.N., was characterized by thorough
area coverage and tenacious and aggressive torpedo attacks in the
shallow waters of the GULF of SIAM which resulted in the sinking of
two ships.

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

3. The Force Commander congratulates the Commanding
Officer, Officers and Crew of the HAMMERHEAD on this aggressive
patrol in which the following damage was inflicted on the enemy:

S-U-N-K

1 Tanker (EU) 2,800 Tons
1 Freighter (EU) 6,800 Tons
Total Sunk 9,600 Tons

[SIGNATURE: James Fife]
JAMES FIFE.
ORIGINAL COPY.

Distribution and authentication
on next page.

- 1 -

— page 234 —
FE24-71/A16-3
Serial 0109-A
[HANDWRITTEN: S-A-L]
DECLASSIFIED
SECOND ENDORSEMENT to:
ComSubPac Conf. Ltr.
A13 Serial 3-45 dated
24 May, 1945. Report
of Sixth War Patrol.

Subject: U.S.S. HAMMERHEAD (SS364) - Report of Sixth War
Patrol - Comment on.

— page 235 —
FE24-71/A16-3
Serial 0135-A
CO[STAMP: DECLASSIFIED]NTIAL (typed, struck through)

UNITED STATES NAVY
1L/ar
27 June 1945.

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

Subject: U.S.S. HAMMERHEAD (SS-364) - Report of Sixth War
         Patrol, Correction to Second Endorsement.

1. The HAMMERHEAD reported sinking a 2,800 ton tanker
at 0353 May 6 1945. COBIA has subsequently reported observing the
attack, seeing two hits, watching the target sink and recovering
a life ring which identifies the target as the TOTTORI MARU, 5,725
gross tons.

2. It is requested that all copies of the Second
Endorsement to HAMMERHEAD Fifth War Patrol be corrected to read
as follows:

S-U-N-K

1 AK - TOTTORI MARU (EC) 5,725 Tons.
1 Freighter (EU) 6,800 Tons.

Total sunk 12,525 Tons.

[SIGNATURE: illegible]
JAMES FIFE,
ORIGINAL COPY

DISTRIBUTION
Cominch (3) Direct ComSubRon-22 (2)
Opnav (2) Direct ComSubRon-26 (2)
Opnav Op-23c (1) ComSubRon-30 (2)
ComlstFlt (1) DivComSubRon-22 (1ea)
Com2ndFlt (1) DivComSubRon-26 (1ea)
Com7thFlt (1) DivComSubRon-30 (1ea)
ComSubslstFlt (30) S/M School, N.L. Conn. (2)
ComSubs2ndFlt (4) Comdt. NYD, Puget Sound (1)
CTF-71 (7) SubAd, Mare Island (2)
CTG-71.5 (2) S/Ms 7thFlt (1)
CTG-71.8 (2)

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

[HANDWRITTEN: 7 13 77ille]
J. R. MILLER,
Flag Secretary.
[HANDWRITTEN: 7 05131]

— page 236 —
[STAMP: REC'D] [HANDWRITTEN: F496]
[HANDWRITTEN: 7 05131]
[HANDWRITTEN: 280]

UNITED STATES FLEET
COMMANDER SEVENTH FLEET

A16-3(9)(F-3c/cgj)
Serial: [HANDWRITTEN: 04962]

19 JUL 1945

[STAMP: DECLASSIFIED] [HANDWRITTEN: I-A-L]

FIRST ENDORSEMENT to:
ComSubs7th conf ltr
FE24-71/A16-3, serial
0175-A, dated 27 June
1945.

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

Subject: USS HAMMERHEAD (SS364) - Report of Sixth
War Patrol, Correction to Second Endorsement.

1. Forwarded.

[SIGNATURE: J. H. Long]
J. H. LONG
By direction

Copy to:
ComSubs7th
CO USS HAMMERHEAD

— page 237 —
FE24-71/A16-3
Serial 0445-A
[STAMP: DECLASSIFIED]

UNITED STATES NAVY
12/fg
22 August 1945.

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

Subject: U.S.S. HAMMERHEAD (SS364) - Report of Sixth War
Patrol, Correction to Second Endorsement.

Reference: (a) Comsubs/7thFlt Conf. Ltr. Serial 01350-A of
27 June 1945.

1. The HAMMERHEAD reported sinking a 6,800 ton
freighter at 0151, May 15, 1945. COBIA has subsequently
reported observing the attack, seeing two hits, watching
the target sink and recovering a life ring which indentifies
the target as the TOTTORI MARU, 5,725 gross tons.

2. Reference (a) is hereby cancelled because of
incorrect damage assessment.

3. It is requested that all copies of the Second
Endorsement to HAMMERHEAD Fifth War Patrol Report be corrected
to read as follows:

SUNK

1 Tanker (EU) 2,800 Tons.

1 AK - TOTTORI MARU (EC) 5,725 Tons.

Total 8,525 Tons.

[STAMP: RECEIVED
23 SEP 1945
COMMANDER
SEVENTH FLEET]

[SIGNATURE: JAMES FIFE.]
ORIGINAL COPY.

10 01288

- 1 -

— page 238 —
FE24-71/A16-3 UNITED STATES NAVY 12/fg
Serial 0445-A 22 August 1945.
[STAMP: DECLASSIFIED]

Subject: U.S.S. HAMMERHEAD (SS364) - Report of Sixth War
Patrol. Correction to Second Endorsement.

— page 239 —
[STAMP: P-1694]
[STAMP: U.S.S. NO 10 01288]
[STAMP: REG. SHEET NO 106]

PHILIPPINE SEA FRONTIER

Phil/F3/mdd
A4-3(1)(8)

Serial: 0864
[STAMP: DECLASSIFIED]

29 SEP 1945

FIRST ENDORSEMENT to
ComSubs7thFlt Conf. ltr.
FE24-71/A16-3, Ser. 0445-a,
of 22 August 1945.

From: Commander Philippine Sea Frontier.
To : Commander in Chief, UNITED STATES FLEET.

Subject: U.S.S. HAMMERHEAD (SS 364) - Report of Sixth War
Patrol, Correction to Second Endorsement.

1. Forwarded.

2. Routing has been changed to substitute Commander Philippine
Sea Frontier for Commander Seventh Fleet, as Commander Submarines Seventh
Fleet is now Commander Submarines Philippine Sea Frontier.

[SIGNATURE: N. C. Gillette]
N. C. GILLETTE
Chief of Staff

Copy to:
ComSubsPSF

— page 240 —
A16-3(8)(F-3-o/bc)
Serial 04495

DECLASSIFIED

THIRD ENDORSEMENT on:
CO, USS HAMMERHEAD (SS364)
Conf. ltr., serial 3-45,
dated 24 May 1945. Report
of Sixth War Patrol.

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

Subject: U.S.S. HAMMERHEAD (SS364) - Report of Sixth
War Patrol.

1. Forwarded.

2. The Commander Seventh Fleet congratulates the
HAMMERHEAD for the damage inflicted on the enemy and notes
with satisfaction the completion of the sixth consecutive
successful patrol for this ship.

Copy to:
ComSubs7thFlt
ComSubRon 30
CO, USS HAMMERHEAD (SS364) UNITED STATES FLEET
COMMANDER SEVENTH FLEET NO [HANDWRITTEN: F-15] [HANDWRITTEN: 02269]
R. S. NO
REG. SHEET NO 117

[HANDWRITTEN: 1 JUL 1945]

[SIGNATURE: T. C. Kinkaid]
T. C. KINKAID

— page 241 —
U.S.S. HAMMERHEAD

SS364/A16-3
Serial 05-45

DECLASSIFIED

c/o Fleet Post Office
San Francisco, California,
21 August 1945.

From: The Commanding Officer.
To: The Commander-in-Chief, United States Fleet.
Via: (1) The Commander Submarine Division 102.
     (2) The Commander Submarine Squadron Ten.
     (3) The Commander Submarines, Pacific Fleet.

SUBJECT: USS HAMMERHEAD (SS364) - Report of War Patrol Number Seven.

Enclosure: (A) Subject report.
           (B) Four (4) track charts (Comsubspac only).

1. Enclosure (A) covering the seventh war patrol of this vessel,
conducted in the Gulf of Siam and South China Sea, during the period 21
June 1945 to 21 August 1945, is forwarded herewith.

F. M. SMITH.

DECLASSIFIED ADT 0415, OPNAVINST 5510.1C
BY [HANDWRITTEN: 9/C] DATE [HANDWRITTEN: 5-11-67]

[HANDWRITTEN: 138729]

— page 251 —
## The Hammerhead's Seventh War Patrol: A Glimpse into WWII Submarine Operations

This document, a page from the USS Hammerhead (SS364)'s Seventh War Patrol Report, offers a fascinating, albeit brief, look into the daily life and operational challenges of a submarine crew during World War II. The report, now declassified, details events from July 19th to July 21st, providing insights into their encounters, communications, and strategic decisions.

**July 19th: A Day of Evasion and Observation**

The 19th of July began with the Hammerhead still submerged, with "Air cover still being sighted" at 1615. This indicates the persistent threat of enemy aircraft, forcing the submarine to remain hidden. Later, at 1821, the crew "Commenced hearing several distant depth charges," a chilling reminder of the ongoing naval warfare and the proximity of enemy anti-submarine efforts.

The most intriguing entry for this day comes at 2030: "Surfaced. Did not go after convoy as they are north of our area, three boats there are in contact and COD, from our pack is trail-ing." This reveals a coordinated "pack" operation with other submarines. The "COD" likely refers to another submarine, possibly the USS Cod (SS-224), which was known to operate in the same general area during the war. The decision not to engage the convoy suggests a strategic assessment that it was outside their designated patrol area or that another submarine was already in a

— page 255 —
DECLASSIFIED.
SUBJECT: USS HAMMERHEAD (SS364) Report of War Patrol Number Seven.

23 July (cont'd)

1410: Started around to northwest of PULO TENGGOL. COD reported observ-
      ing the smoke.

2042: Closed coast. Patrolling close inshore tonight. BLENNY reported
      having attacked a target today who turned out to be a patrol
      launch with 37 MM, depth charges and sound gear, with fighter
      cover.

2200: LIZZARDFISH reported having sunk motor sampan and tracked two
      small patrol boats at two knots, this afternoon and tonight.
      She is going on to a lifeguard station.

24 July

0625: Have seen nothing but numerous sailboats and one small patrol
      launch. Set course to get north of exits from REDANG ISLANDS
      for surface patrol today.

1200: E. Posit. Lat. 006-04 N.; Long. 103-10 E.

2100: Rendezvoused with BLENNY, gave her all our 5" and 40 MM ammuni-
      tion and received one Jap prisoner from her. Passed 90 rounds
      5" and 500 rounds of 40 MM in an hour and a half by breeches
      buoy between shears of one boat and cigarette deck of other.
      Upon completion of rendezvous proceeded to patrol in REDANG
      ISLANDS.

2330: Received orders to remain in area, fuel permitting.

2400: Directed COD to patrol south of PULO TENGGOL, BLENNY north of
      there. HAMMERHEAD will remain in or near REDANG ISLANDS.

25 July

0730: Submerged for patrol in northern REDANG ISLANDS.

1200: E. Posit. Lat. 005° 51' N.; Long. 102° 51' E.

2056: Surfaced for night patrol same area.

26 July

0330: Received orders to proceed Subic. Commenced return.

0430: Sent HAMMERHEAD second serial, giving summary of patrol and say-
      ing that we have fuel and would like to stay. Unless otherwise
      ordered, will be clear of area at dawn.

12.

— page 256 —
DECLASSIFIED
SUBJECT: USS HAMMERHEAD (SS364) Report of War Patrol Number Seven.

2 August.
1407: Underway for return to SubsPac, escorted by USS WOODSON (DE359).

1540-
1800: Provided services for escort sound training.

2100: Released escort. Proceeding singly in joint zone.

3 August
1200: E. Posit. Lat. 16-57 N.; Long. 116-18.5 E.

1305: A/C Contact #13. Sighted unidentified plane, range 10 miles.
     Did not close.

2021: A/C Contact #14. Sighted and SJ contact on plane at two miles.
     Possible C-47. Opened out and lost.

4 August
0300: Transmitted tenth to ComTaskFor 71. Will pass opcontrol 1900
     tonight.

0445: A/C Contact #15. SJ Contact at 9 miles. Lost immediately.

1200: E. Posit. Lat. 20-31 N.; Long. 120-39 E.

1300: Sighted BATAN Island, range 35 miles.

1330: Received as an information addressee, an urgent message being
     passed by CTF 71.1 to CTF 17 for information. COMPHILSEAFRON
     desires to be informed when HAMMERHEAD has acknowledged orders
     from CTF 71.1 to remain clear of a hunter-killer group in vicin-
     ity of 20° 17' N., 128° 07' E. My reaction to message is that
     HAMMERHEAD is not desired to pass opcontrol. Informed CTF 71.1
     that we would not pass opcontrol until situation cleared.
     Remaining in area DECAP to west of 120° E.

5 August
1200: E. Posit. Lat. 20-40 N.; Long. 121-08 E.

2230: Received information that hunter-killer group had secured.

2310: Transmitted HAMMERHEAD's twelfth.

15.

— page 267 —
This appears to be a page from a WWII submarine patrol report, likely from the USS HAMMERHEAD (SS364) for its seventh war patrol. The document has been declassified.

Here's the transcription:

[STAMP: DECLASSIFIED L.]
SUBJECT: USS HAMMERHEAD (SS364) Report of War Patrol Number Seven.

— page 275 —
DECLASSIFIED A.L.

SUBJ CT: USS H.L. HERNDON (SS364) Report of War Patrol Number Seven.

(U) COMMUNICATIONS, RADAR AND SONAR COUNTERMEASURES.

Equipment: SPR-1, SPA-1, SPR-5AR.

DATE | POSITION | FREQ. | PPS | P.W. | TUNING | REMARKS
TIME | OF SHIP  | MC    | CPS | M.S. | UNIT   |
-----||-------|-----|------||
6/26 | 009° E.  | 193   | 1000| 7    | TN2/4  | Came on for 10 seconds
     |          |       |     |      |        | every three minutes,
     |          |       |     |      |        | weak but steady. Pro-
     |          |       |     |      |        | bably Lombok air search.

7/14 | 005°27' N. 143 | 500 | 5 | TN2/4 | Continuous 30 second
2140 | 109°20' E.    |     |   |       | sweeps. Probably enemy
     |               |     |   |       | anti-sub radar as in-
     |               |     |   |       | dication disappeared
     |               |     |   |       | with permanent displace-
     |               |     |   |       | ment of sub.

7/19 |               | 210 | 500 | 3½ | TN2/4 | Very strong, sweeping,
0235 |               |     |     |    |       | comes in every few min-
     |               |     |     |    |       | utes irregularly. Stays
     |               |     |     |    |       | on for about 10 seconds.
     |               |     |     |    |       | Light have been land
     |               |     |     |    |       | based. Has a low buzzing
     |               |     |     |    |       | sound. Lost signal at
     |               |     |     |    |       | 0310.

(V) REMARKS.

The requirements of Commander Submarines, Seventh Fleet, Serial
0243 dated 2 February 1945, have been complied with.

34.

— page 276 —
[STAMP: DECLASSIFIED]
FB5/102/A16-3

serial: 0129

FIRST ENDORSEMENT to
CO, USS HAMMERHEAD
(SS364) Conf. ltr:
SS364/A16-3 of 21
August 1945.

SUBMARINE DIVISION 102

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

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

Subject: U.S.S. HAMMERHEAD (SS364) - Report of War Patrol Number
SEVEN - Comments on.

1. The seventh war patrol of the U.S.S. HAMMERHEAD, under
the command of Commander F. M. SMITH, U.S. Navy, was conducted in
the Gulf of Siam and the South China Sea during the period 21 June
to 21 August 1945. Thirty five days were spent in the area, during
which two contacts worthy of torpedo attack were encountered and one
army aviator rescued. The HAMMERHEAD formed part of a coordinated
attack group consisting of various submarines operating in the Gulf
of Siam and South China Sea areas and from 21 July until 26 July, the
commanding officer of the HAMMERHEAD acted as OTC of a coordinated
attack group consisting of BLENNY, LIZZARDFISH and COD.

2. On 9 July, a convoy consisting of two coastal freigh-
ters of SCS type escorted by two small escorts of the PC or SC type
was contacted by radar. Six bow Mark 18 torpedoes fired in two
night surface attacks at ranges of 2100 and 1800 yards with favorable
tracks, small gyro and depth settings of 2½ feet resulted in
misses. Since the targets were tracked on a steady course at a
speed of 5½ knots over a period of six hours, it is believed that
these misses can be attributed to a combination of shallow draft
targets and the prevailing force three seas.

3. On 18 July while part of a coordinated attack group
under the tactical command of the commanding officer of the HAWK-
BILL, the HAMMERHEAD radar contacted, tracked and reported a convoy
of three ships and three escorts proceeding along the coast inside
the ten fathom curve during bright moonlight. While attempting to
obtain a suitable attack position, during the time the convoy was
rounding a coastal island and heading toward deeper water, the
HAMMERHEAD was ordered by the OTC to take station on the convoy's
track for submerged attack. Although attaining this station nec-
essitated abandoning immediate attack, the commanding officer
reasoned that any attempted attack in the unfavorable conditions
still prevailing would divert the convoy and prevent attacks by six
other submarines then deployed in favorable positions along the
convoy's probable route. Unfortunately the HAMMERHEAD, after sub-
merging on the designated station, was unable to close the range
sufficiently for attack.

-1-

— page 277 —
SUBMARINE DIVISION 102
                                                Care of Fleet Post Office,
                                                San Francisco, California,
                                                23 August 1945.

FB5/102/A16-3

Serial: 0129

Subject: U.S.S. HAMMERHEAD (SS364) - Report of War Patrol Number
         SEVEN - Comments on.

         4. On 28 July, while enroute Subic Bay from her operating
area and having ascertained from an encountered British submarine that
a B24 had been ditched on 23 July, the HAMMERHEAD had the good fort-
une to rescue an Army aviator approximately 300 miles from the pos-
ition of the ditched plane. HAMMERHEAD then obtained permission to
spend two additional days searching for other possible survivors.

         5. With the exception of number two main generator which
will probably require armature replacement during the forthcoming
Navy Yard overhaul, the HAMMERHEAD arrived in good condition and out-
standingly clean.

         6. The Administrative Division Commander congratulates
the Commanding Officer, officers and crew upon the completion of this
proficient patrol, and upon the magnificent record of sinkings and
damages accomplished by the HAMMERHEAD in her seven war patrols
against the enemy.

                                                J. C. DEMPSEY.

— page 278 —
SUBMARINE SQUADRON TEN
Fleet Post Office
San Francisco, California

11/rhb

25 August 1945

FC5-10/A16-3
Serial: ( 0255 )
[STAMP: DECLASSIFIED]
SECOND ENDORSEMENT to
U.S.S. HAMMERHEAD (SS364)-
Report of War Patrol
Number Seven.

From: The Commander Submarine Squadron TEN.
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. HAMMERHEAD (SS364) - Report of War Patrol
         Number Seven.

1. Forwarded, concurring in the remarks of the
Commander Submarine Division ONE HUNDRED TWO.

2. The Commander Submarine Squadron TEN congratulates
the Commanding Officer, officers and men of the U.S.S. HAMMERHEAD
upon completion of her Seventh War Patrol.

[SIGNATURE: G.E. Peterson]
G.E. PETERSON

— page 279 —
10 0118
FF12-10(A)/A16-3(18)
SUBMARINE FORCE, PACIFIC FLEET
Serial 02265
Care of Fleet Post Office,
San Francisco, California,
11 September, 1945.

[STAMP: DECLASSIFIED]

NOTE: THIS REPORT WILL BE
DESTROYED PRIOR TO
ENTERING PATROL AREA.

THIRD ENDORSEMENT to
HAMMERHEAD Report of
Seventh War Patrol.

COMSUBSPAC PATROL REPORT No. 866
U.S.S. HAMMERHEAD - SEVENTH WAR PATROL.

[STAMP: EXTRA : ORIGINAL
SORC. MICRO
PHOTO-LAB OP-18
RETURN TO F-4253]

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. HAMMERHEAD (SS364) - Report of Seventh War Patrol
(21 June to 21 August 1945).

1. The seventh war patrol of the U.S.S. HAMMERHEAD, under the com-
mand of Commander F. M. Smith, U.S. Navy, was conducted in the Gulf of Siam and
the South China Sea.

2. This patrol was devoted to normal offensive operations in which
the HAMMERHEAD participated as a unit of a coordinated attack group. The patrol
is noteworthy for its excellent area coverage and penetration of very shallow
waters in endeavors to locate and destroy enemy shipping. Only two groups of
targets worthy of torpedo fire were encountered on this patrol. One group con-
sisted of a destroyer and five ships which the HAMMERHEAD was unable to close;
the other group consisted of two SCS's accompanied by two smaller patrol craft.
The HAMMERHEAD succeeded in sinking one of these SCS's and one of the escorts.
While enroute from her patrol area the HAMMERHEAD sighted and recovered an
aviator who had been adrift for five days.

3. Award of Submarine Combat Insignia for this patrol is authorized.

4. The Commander Submarine Force, Pacific Fleet, welcomes the com-
manding officer, officers, and crew of the HAMMERHEAD to the Central Pacific,
and congratulates them for the completion of this well planned and smartly con-
ducted patrol, for the rescue of an Army pilot, and for the damage inflicted
upon the enemy. The HAMMERHEAD is credited with having inflicted the following
damage upon the enemy during this patrol:

S U N K

1 - SCS (EU) 880 tons (Separate Report)
1 - PC (EU) 250 tons (Separate Report)

TOTAL SUNK 1,130 tons*

*NOTE: Since the above damage was done in areas under the operational
control of Commander Task Force SEVENTY-ONE, he is requested to assume credit
accordingly.

Distribution and Authentication
on next page.

MERRILL COMSTOCK,
Deputy.

- 1 -

— page 280 —
FF12-10(A)/A16-3(18)

Serial 02265
[STAMP: DECLASSIFIED]
THIRD ENDORSEMENT to
HAMMERHEAD Report of
Seventh War Patrol.

SUBMARINE FORCE, PACIFIC FLEET

Care of Fleet Post Office,
San Francisco, California,
11 September, 1945.

NOTE: THIS REPORT WILL BE
DESTROYED PRIOR TO
ENTERING PATROL AREA.

COMSUBPAC PATROL REPORT No. 866
U.S.S. HAMMERHEAD - SEVENTH WAR PATROL.

Subject: U.S.S. HAMMERHEAD (SS364) - Report of Seventh War Patrol
(21 June to 21 August 1945).

— page 281 —
END OF REEL
JOB NO. [HANDWRITTEN: B11-9867-1]

1.0
1.1
1.25

2.8
3.15
3.5
4.0
4.5
5.0

1.4
1.6

2.5
2.2
2.0
1.8

THIS MICROFILM IS
THE PROPERTY OF
THE UNITED STATES
GOVERNMENT

DEPARTMENT OF DEFENSE
UNITED STATES OF AMERICA

MICROFILMED BY
DEFENSE PRINTING SERVICE—WASHINGTON
MICROFILM SECTION

D-52264