U.S.S. LAMPREY (SS-372) — war patrol report SS-372_LAMPREY.pdf

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START OF REEL
JOB NO. [HANDWRITTEN: F-108]
[HANDWRITTEN: AR-40-79]

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OPERATOR [HANDWRITTEN: HARRIS]
DATE [HANDWRITTEN: 1-15-79]

THIS MICROFILM IS
THE PROPERTY OF
THE UNITED STATES
GOVERNMENT

[STAMP: DEPARTMENT OF DEFENSE UNITED STATES OF AMERICA (with eagle emblem)]

MICROFILMED BY
NPPSO-NAVAL DISTRICT WASHINGTON
MICROFILM SECTION

REEL TARGET - START AND END
NDW-NPPSO-5210/1 (6-78)

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[HANDWRITTEN: LAMPREY (SS-372)
WWII PATROL FILE
ALL MATERIAL ON THIS REEL IS DECLASSIFIED.

FOR DECK LOGS NOVEMBER 1944-JUNE 1945
CONSULT NATIONAL ARCHIVES WHICH HAS
CUSTODY.

J.A. KOONTZ]

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NAVY DEPARTMENT
OFFICE OF THE CHIEF
DIVISION OF NAVAL OPERATIONS
DIVISION OF NAVAL HISTORY (OP 09B9)
SHIPS' HISTORIES SECTION

HISTORY OF USS LAMPREY (SS 372)

USS LAMPREY is named for an arctic sea eel whose scientific name
is Lampetra borealis (Girard). She was built by the Manitowoc
Shipbuilding Company, Manitowoc, Wisconsin. Her keel was laid 22
February 1944 and she was launched 18 June 1944, under the sponsorship
of Mrs. William T. Nelson, wife of Commander Nelson, U. S. Navy, who
was the prospective commanding officer of LAMPREY.

LAMPREY was placed in commission at Manitowoc on 17 November 1944,
Commander William T. Nelson, USN, in command. After trials and training
in Lake Michigan she was taken down the Mississippi River to New Orleans,
and from that port, set course for the Canal Zone where she arrived on
22 December 1944. She completed twenty-one days of training in the
Perlas Islands area under Commander Submarine Squadron THREE and cleared
Balboa on 13 January 1945 for the Hawaiian Islands. She reached Pearl
Harbor on the 29th and was assigned to Submarine Squadron FOUR and
Submarine Division 42 for voyage repairs and final training. She put to
sea from Pearl Harbor on 17 February 1945 to conduct her first war patrol.
She searched off the Coast of Luzon until 12 March when she steamed for
life guard station in support of the air strikes on Formosa. There were
no calls for rescue service by the 25th when she was ordered to a new
life guard station off Hong Kong. On 29 March she left her station to
rendezvous with submarine TIGRONE off Hainan Strait where she surfaced
on the 30th to find herself surrounded by about seventy-five junks. She
went under them and four hours before midnight proceeded on a scouting
line with TIGRONE. She sighted smoke on the 31st and flashed a contact
report to TIGRONE who identified the target to be a hospital ship. The
two submarines transited Singapore Straits on 8 April and steamed through
the Karimata Straits the next day to enter the Java Sea. Finding no
targets worthy of torpedo fire, LAMPREY transited Lombok Strait on 17
April bound for Fremantle, Western Australia, where she arrived on 22
April 1945.

LAMPREY cleared Fremantle on 21 May 1945 and entered the Java Sea
five days later, bound for her assigned area in the Siam Gulf. Off
Karimoen Djawa Island the night of 28 May she made rendezvous to exchange
information with BLUEBACK by blinker. While this was in progress she
made radar contact with a 600 ton escort vessel, and falling astern of
BLUEBACK, closed for a coordinated gun attack. Both submarines opened
with their five-inch gun to score damage but the burning target escaped
to the north, still firing his guns. LAMPREY exchanged gossip with
British submarine HMS TRENCHANT on 3 June and patrolled north of Atas
Island the next day. She inspected the anchorage of Pula Panjang on the
24th, and ten minutes before midnight received a request from fleet

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USS LAMPREY (SS 372)

submarine CHARR for rendezvous. At 0110, 25 June 1945, CHARR came
alongside to transfer Torpedoman Karl Anthony Dalier, USNR, for
transportation to a hospital. LAMPREY set course for Subic Bay where
she put her patient ashore on 29 June 1945, terminating her second war
patrol.

LAMPREY put to sea from Subic Bay on 26 July 1945 for her third
war patrol and spent much of her time in a fruitless search along the
east side of the Gulf of Siam. She entered the Singapore area on 8
August to patrol west of Pengiboe Island where she destroyed a small
craft with gunfire. She was relieved of duties in the Singapore area
the same day by British submarine HMS SPEARHEAD and then set course
for Borneo. On 13 August 1945 a convoy of three ships with two small
escorts was sighted on the other side of the Thousand Islands. LAMPREY
had no chance at them as they kept to the westward side of the Island
but found a two-masted schooner on 15 August 1945. She was closing in
for the kill at 1855 when she received word to cease hostilities. The
attack approach was broken off and she returned to Subic Bay on 20
August 1945.

LAMPREY stood out of Subic Bay on 31 August 1945 for return to
the United States. After touching at Pearl Harbor, she entered in the
Tiburon Anchorage of San Francisco Bay on 22 September 1945 and remained
until 20 February 1946. She then entered the Mare Island Navy Yard for
inactivation and was decommissioned on 3 June 1946. She has remained
inactive since that time and is scheduled for loan to the Government of
Argentina on 21 July 1960, under terms of the Military Assistance
Program.

LAMPREY earned four battle stars for operations listed below:

1 Star/IWO JIMA OPERATION:
Assault and Occupation of Iwo Jima: 9-16 Mar 1945

1 Star/OKINAWA GUNTO OPERATION:
Assault and Occupation of Okinawa Gunto: 17 Mar-4 Apr 1945

1 Star/SECOND WAR PATROL-PACIFIC: 21 May-29 Jun 1945

1 Star/THIRD WAR PATROL-PACIFIC: 26 Jul-20 Aug 1945

LIST OF COMMANDING OFFICERS

Commander William T. Nelson, USN: 17 Nov 1944 - 8 May 1945
Lieutenant Commander Lucien B. McDonald, USN: 8 May 1945 - 17 Dec 1945
Lieutenant Commander William T. Russell, Jr., USNR:
17 Dec 1945 - 3 Jun 1946

2

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USS LAMPREY (SS 372)

ORIGINAL STATISTICS

LENGTH OVERALL:                               311 feet, 9 inches
EXTREME BEAM:                                 27 feet, 3 inches

STANDARD DISPLACEMENT:
    Tons:                                     1,526
    Mean Draft:                               15 feet, 3 inches

SUBMERGED DISPLACEMENT:
    Tons:                                     2424

DESIGNED SPEED:
    Surfaced:=                                20.25
    Submerged:                                8.75

DESIGNED DEPTH:                               400 feet

DESIGNED COMPLEMENT:
    Officers:                                 6
    Men:                                      60

ARMAMENT:
    Torpedo Tubes:                            (10) 21-inch
    Secondary:                                (1) 5-inch .25 caliber
                                              (1) 40-mm
                                              (2) 20-mm
TORPEDOES:                                    24

                                              Compiled and stenciled 22 Jun 1960 (ks)

3

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[HANDWRITTEN: 1ST COPY]

U.S.S. LAMPREY (SS372)

SS372/ A16
c/o Fleet Post Office,
San Francisco, California,
Serial 019
22 April 1945.

CONFIDENTIAL
[STAMP: DECLASSIFIED]

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

Subject: U.S.S. LAMPREY (SS372), Report of War Patrol Number One.

Enclosure: (A) Subject Report.
(B) Track Charts.

1. Enclosure (A), covering the first war patrol of this vessel
conducted in Luzon Straits, South China Sea and Java Sea during the period
February 17, 1945 to April 22, 1945, is forwarded herewith.

[SIGNATURE: W. T. Nelson]
W. T. NELSON.

DECLASSIFIED

DECLASSIFIED-ART. 0445, OPNAVINST 5510.1C
BY [HANDWRITTEN: OP-09C] DATE [HANDWRITTEN: 5/31/72]

[HANDWRITTEN: 121897]
6 0580

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CONFIDENTIAL

A. PROLOGUE

Commissioned November 17, 1944 at building yard, MANITOWOC SHIPBUILDING
COMPANY, MANITOWOC, WISCONSIN. November 21 to December 2, 1944 conducted trials,
tests and training in LAKE MICHIGAN. December 6, 1944 departed MANITOWOC, WISCON-
SIN for NEW ORLEANS, LA., arriving December 13, 1944. Departed NEW ORLEANS, LA.,
December 17, 1944 and arrived CANAL ZONE December 22, 1944. Conducted 21 days
training in PERLAS IS: area under Commander Submarine Squadron THREE. Departed
CANAL ZONE January 13, 1945 in company with U.S.S. BUGARA and Submarine Division
FORTY-THREE for administration, voyage repairs and final training. Arrived PEARL HARBOR,
T.H. January 29, 1945. Assigned to Submarine Squadron FOUR at Submarine Base
PEARL HARBOR, T.H. and installed following new items of equipment:

1. Booster blower and cooling coils in control room.
2. V.H.F.
3. SPA/SPR
4. RBH and RBS receivers.
5. Stop valves in hydraulic lines to #5 F.B.T. vent operating mechanism.
6. Structural alterations preliminary to installation of ST radar, but
   ST radar NOT installed.
7. Arma Course Clock.
8. Altered foundation of sound head training motor to accommodate lathe
   motor.
9. Modified angle solver range counter in T.D.C. to read double the
   range keeper range.

Lieutenant (jg) J. R. CONANT (DE) U.S.N.R. reported on board for duty.

Ship was depermed. Two days were allotted for loading and the readiness
for sea date set as February 17, 1945.

B. NARRATIVE

ROSTER OF OFFICERS AND C.P.O.s ON BOARD AT START OF PATROL

OFFICERS

Commander W. T. NELSON, U.S.N. | Commanding | 4 Patrols
Lieutenant W. T. ROSSELL, Jr., (DE) USNR. | Exec.,Nav. | 5 Patrols
Lieutenant L. A. FRANZ, U.S.N. | Eng.,Elec. | 4 Patrols
Lieutenant (jg) M.W. BATTERMAN, (DE) USNR. | Torp. | 5 Patrols
Lieutenant (jg) C.C. BIESECKER, (DE) USNR. | 1st Comms'y. | 0 Patrols
Lieutenant (jg) R. P. BARTLETT, U.S.N. | Ass't. Torp. | 0 Patrols
Lieutenant (jg) J. R. CONANT, (DE) USNR. | Gunner | 3 Patrols
Lieutenant (jg) J. D. AIDEN, (DE) USNR. | Comm. | 0 Patrols
Ensign L. C. MORRIS, U.S.N. | Ass't. Eng. | 6 Patrols
Machinist L. O. MORGAN, U.S.N. | Ass't. 1st Lieut. | 7 Patrols

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[STAMP: 6 0580]

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CONFIDENTIAL
B. NARRATIVE (Cont'd)

CHIEF TTY OFFICERS
CTM(PA)(SS) J. D. TOMLINSON, USN. 6 Patrols
CQM(T)(SS) G. B. OBBINS, USN. 7 Patrols
CMOMM(PA)(SS) G.L HAYCRAFT, USN. 5 Patrols
CMOMM(PA)(SS) C. F. STIMAC, USN. 7 Patrols
CMOMM(AA)(SS) W. D. WARNER, USN. 5 Patrols
CEM(PA)(SS) R. H. AKERS, USN. 8 Patrols
CEM(AA)(T)(SS) L.A. WARD, USN. 8 Patrols
CRM(PA)(SS) J. T. WOFFORD, USN. 9 Patrols

February 17, 1945
1430(VW) Underway for first patrol from Submarine Base, PEARL HARBOR,
          T.H. in accordance with COMSUBPACADCOM OP. Order 17-A-45. Es-
          corted by P.C. 570
2000(VW) Released escort.
2100(VW) Set clocks back to (plus) 11 zone time.

February 18-24, 1945
Made training dives, held fire control and emergency drills
daily. Numerous friendly plane contacts.
Daily 1200 positions:
| | Lat. | Long.
| February 18 | 20° 48.4'N. | 162° 58.9'W.
| February 19 | 20° 30.2'N. | 168° 38.0'W.
| February 20 | 20° 17.1'N. | 174° 07.7'W.
| February 21 | 20° 06.5'N. | 179° 23.0'W.
| February 22 | Omitted from calendar.
| February 23 | 19° 48.8'N. | 175° 28.9'E.
| February 24 | 19° 53.5'N. | 170° 17.0'E.

February 25, 1945
1200(L) Position: Lat. 19° 52'N. Long. 164° 38'E.
2258(L) Interference of another SJ on radar. Unsuccessful in attempt
          to establish recognition. Position: Lat. 19° 38'N. Long. 162°
          49'E.

February 26, 1945
1200(L) Position: Lat. 19° 22'N. Long. 159° 56'E.

February 27, 1945
0015(L) Entered JOINT ZONE "SHORTCUT".
1200(K) Position: Lat. 18° 40'N. Long. 154° 16' E.

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CONFIDENTIAL

February 28, 1945
    1200(K) Position: Lat. 17° 12'N. Long. 147° 39'E. From here to SAIPAN
            had many contacts with friendly planes.
    2241(K) Made radar contact with SARIGAN IS. bearing 268° T. range 80,000
            yards.
    2310(K) Radar contact with expected friendly submarine showing SJ in-
            terference. Unsuccessful in attempt to establish recognition
            by means of SJ. Position: Lat. 16° 39'N. Long. 146° 15'E.

March 1, 1945
    0500(K) Exchanged recognition with escort SC 775.
    1233(K) Moored to port side U.S.S. FULTON in TANAPAG HARBOR, SAIPAN.
    1300(K) Commander N. LÜCKER, USN., reported on board for temporary duty
            as P.C.O.

March 2-3, 1945
            At SAIPAN awaiting orders.

March 4, 1945
    1000(K) Underway for patrol, escorted by SC 775.
    1545(K) Released escort. Proceeding thru JOINT ZONE "SMOKESTACK".
            Numerous contacts with friendly planes until dark.

March 5, 1945
    0900(K) Set clocks back to zone (-) 9 time.
    1200(I) Position: Lat. 16° 14' N. Long. 140° 44' E.
    1350(I) Passed U.S. Submarine on opposite course.

March 6, 1945
    1200(I) Position: Lat. 18° 59' N. Long. 136° 12' E.

March 7, 1945
    0345(I) Entered SUBMARINE PATROL ZONE.
    1200(I) Position: Lat. 20° 51'. Long. 131° 31' E.

March 8, 1945
    1200(I) Position: Lat 20° 50' N. Long. 126° 29' E.
    1300(I) Set clocks back to zone -8 time.
    1620(H) Plane contact on SD at 8 miles. No IFF. Dived.
    1710(H) Surfaced.

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CONFIDENTIAL

March 9, 1945

Note: All times hereafter are HOW unless indicated otherwise.

0533 Sighted BALINTANG IS.
0540 Dived.
1200 Position: Lat. 19° 52' N. Long. 122° 21' E.
1841 Surfaced. Proceeding through BALINTANG CHANNEL.

March 10, 1945

Patrolling LUZON STRAITS south of 21° 30'N.
0324 SPR commenced keying SD.
0331 Dived when SD range was f 8 miles and steady saturated pip in-
dicated two planes in the vicinity at
one at 18 miles, which was believed the original con-
tact, and the second, which must have been low, as it first
appeared on SD screen at 5 miles.
0435 Came to 40 ft. Plane on SD at 12 miles and indications of plane
radar on SPR. Went back down.
0505 Surfaced, all clear on SD and SPR.
0541 Dived.
1200 Position: Lat. 19° 47'N. Long. 120° 56' E.
1832 Surfaced. Commenced working to southward to patrol to west of
DALUPIRI ISLAND.

March 11, 1945

0325 Indications of radar equipped plane on SPR. Commenced keying SD.
Contact at 17 miles. The plane remained in the vicinity at
ranges of 17 miles to 7 miles, but did not make a run, although it
appeared he had us by radar due to the steady saturated pip.
0405 Lost radar indications on SPR.
0535 Dived.
1200 Position: Lat. 19° 02' N. Long. 121° 03' E.
1845 Surfaced.

March 12, 1945

0545 Dived.
1200 Position: Lat. 20° 06' N. Long. 120° 58' E.
1835 Surfaced. Plane contact on SD at 3 miles.
1836 Dived.
1901 Surfaced. Set course for new patrol and life guard station assigned
by COMSUBPAC north of 20° 30' and between 120° E. and 121° E. Long.
2400 Received message assigning life guard duties for strike on FORMOSA
March 13th. Proceeding to station.

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CONFIDENTIAL
March 13, 1945

0550 Dived. On station for life guard duties. Many B-24s sighted
1115 Surfaced. headed for home after raid. There was no call for services and
intercepts of voice conversation indicated that only plane in
trouble was nearing north coast of LUZON.
1200 Position: Lat. 21° 27' N. Long. 120° 00' E.
1515 Dived.
1837 Surfaced.

March 14, 1945

0010 Received message assigning life guard station for another strike
on FORMOSA this date. Proceeding to station. During night there
were numerous weak indications of JAP plane radars on SPR but
nothing developed.
0549 Dived. No star sights this morning so at
0857 Surfaced for sun line and at
0900 Dived.
0930 Sighted PB2Y and 3 P-38s heading northwest. Assumed to be detail
on way to another rescue job we had heard of.
1130 Made attempt to surface but were kept down due to close plane con-
tacts on SD that could not be seen or identified through periscope.
Finally
1210 Surfaced and established VHF contact with fighter cover.
1200 Position: Lat. 21° 40' N. Long. 119° 50' E.
1311 Dived.
1325 Surfaced.
1500 Fighter cover stated they had to leave and they headed off for home
(one hour early).
1600 No calls for services and no indications of planes in trouble so
started clearing area to southward due to fact our presence and
position had been disclosed by conversations with fighter cover
over VHF.
1926 Weak indications of 149 Meg. radar on SPR. This was unlike pre-
vious JAP plane radars and may possibly have been a friendly plane.
For details see section U. At
1939 Keyed SD and found plane at 3 miles, so dived. Due to weakness of
signal on SPR believed the set was not working properly.
2100 Surfaced. Almost immediately picked up JAP plane radar on SPR.
Started keying SD and at
2116 With range 8 miles, dived. Decided to stay down and work on SPR,
which again had shown a very weak signal, and also to make re-
pairs to broken latch on conning tower hatch, which made it awk-
ward to close hatch.
2319 All repairs completed. Surfaced.

March 15, 1945

0534 Dived.
1200 Position: Lat. 20° 47' N. Long. 120° 58' E.
1233 Surfaced for 10 minutes for sun line.
1833 Surfaced. Set course to close southwest coast of FORMOSA for a
submerged patrol tomorrow.

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CONFIDENTIAL

March 16, 1945

0055 Received orders for life guard duties today. Proceeding to station.
0507 Indications of JAP plane on SPR. Keyed SD and obtained range of
     plane at 13 miles.
0508 Dived, as dawn was breaking.
0851 Surfaced. Cruising in vicinity of assigned station.
1016 Fighter cover, 4 P-38s, reported for duty.
1129 Fighter cover relieved the watch. Four other P-38s taking over.
1200 Position: Lat. 21° 57' N. Long. 119° 57' E.
1302 Fighter cover departed. Numerous flights of B-24s passed overhead
     during afternoon. Unable to contact flights we were guarding but
     every indication was that no plane was in trouble so at
1419 Dived.
1834 Surfaced. Headed in to coast of FORMOSA to make a sweep along the
     100 fathom curve.
2140 Detected sweeping JAP land based radar on SPR.
2152 Two JAP land based radars steadied on us and apparently they commenc-
     ed tracking. One radar probably was located at GARAM BI. Location
     of other unknown.
2158 JAP plane seen on SPR. Keyed SD and found plane at 8 miles closing
     so at
2159 Dived. Apparently it didn't take long to vector a plane over us
     once the tracking party got organized.
2258 Surfaced.
2355 Received orders for life guard station for tomorrow. Proceeding to
     station.

March 17, 1945

     Land based radars sweeping until 0100 when contact was lost on SPR.
0150 Radar of 159 megs. on SPR. Indications that it was making regular
     sweeps at 10 RPM. This was similar to one picked up 1926 on March
     14, 1945. Contact at 20 miles on SD. Decided to investigate so
     turned on BN. Received IFF from plane showing code 5. SPR contact
     was evidently on his BK.
0528 Dived.
0832 Surfaced.
0923 Fighter cover, 4 P-38s, arrived on station.
1005 Sighted several squadrons of B-24s headed NW. This must be another
     strike so no B-24s were assigned to our area.
1200 Fighter cover relieved the watch. The relieving section had diffi-
     culty finding us and had to be coached in by SD ranges, using the
     "You're getting Warmer" system.
1200 Position: Lat. 21° 46' N. Long. 120° 07' E.
1305 Fighter cover shoved off.
1337 Numerous B-24s overhead headed for home. There were no indications
     of any planes needing assistance and everyone contacted by VHF or
     Life Guard frequency reported they had nothing for us, so at
1546 Dived.

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— page 13 —
CONFIDENTIAL
March 17, 1945 (Cont'd)

1836 Surfaced.
1907 Indications at 159 megs. on SPR. Evidently a BK as it was coming
      in every 6 seconds. Keyed SD and BN and found plane at 13 miles
      showing IFF, code 1.
2030 Indications at 175 megs. on SPR. Out of curiosity turned on BN
      and found two planes at 10 miles, one of which was showing IFF,
      code 6.
2202 Indications at 158 megs. on SPR. Plane at 7 miles on SD showing
      IFF, code 5.

March 18, 1945

0115 Received orders for life guard duty today. Proceeding.
0355 Picked up BK on SPR. Friendly plane at 12 miles showing code 1.
0536 Dived.
0934 Surfaced.
1058 Fighter cover, 4 P-38s, reported.
1200 Position: Lat. 22° 02' N. Long. 120° 00' E.
1205 Many B-24s sighted headed home. Received word that our services
      were not required.
1300 Fighter cover departed.
1400 Dived.
1831 Surfaced. During night had two radars on SPR, one at 97 megs. and
      one at 157 megs. Both appeared to be land based. Wonder if the
      one at 157 megs. is what is triggering all the BKs in the area?

March 19, 1945

0531 Dived.
1200 Position: Lat. 21° 10' N. Long. 120° 20' E.
1226 Surfaced for sun line.
1357 Dived.
1828 Surfaced. During night had contact with several friendly planes by
      detecting their BK on the SPR at 157 megs. Also had JAP land based
      radar at 157 megs.

March 20, 1945

0758 Dived.
1038 Surfaced on life guard station.
1200 Position: Lat. 21° 53' N. Long. 120° 08' E. Many friendly planes
      on SD returning from raid and several B-24s passed overhead. All
      looked all right, so at
1332 Dived.
1832 Surfaced.
2059 Detected radar on SPR at 175 megs. SD contact at 21 miles showing
      IFF.
2110 Radar on SPR at 155 megs. SD contact 7 miles, closing fast, no IFF.
      Dived.
2207 Surfaced.

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CONFIDENTIAL
March 21, 1945

Starting at 0340 two land based radars at 97 and 157 megs. commenced
sweeping. On occasions they would steady on us for 4 or 5 minutes.
We were 35 miles from land so it is believed they were steadying on
our SJ interference.
0526 Dived.
1011 Surfaced on life guard station. No call for services, all planes
returned safely.
1200 Position: Lat. 22° 02' N. Long. 120° 21' E.
1350 Dived.
1836 Surfaced.

March 22, 1945

0527 Dived.
1107 Surfaced on life guard station.
1130 Fighter cover reported, 4 P-38s. Many friendly planes on SD re-
turning from raid. No call for services.
1200 Position: Lat. 21° 57' N. Long. 120° 20' E.
1330 Fighters departed.
1355 Dived.
1837 Surfaced.

March 23, 1945

0532 Dived.
0818 Surfaced proceeding to life guard station.
0950 Fighter cover reported.
1112 Fighters relieved the watch.
1200 Position: Lat. 21° 54'N. Long. 120° 03' E.
1300 Fighter cover departed. Numerous B-24s sighted headed home and
no request for services and no planes in trouble, so at
1400 Dived.
1831 Surfaced.

March 24, 1945

0458 SPR contact with radar at 175 megs. SD contact at 19 miles with
friendly plane.
0523 Dived.
1010 Surfaced on life guard station.
1018 Fighter cover reported.
1200 Position: Lat. 21° 47' N. Long. 120° 32' E.
1230 Fighters left. Many planes on SD returning from raid. Finally
heard that all planes were all right, so at
1355 Dived.
1833 Surfaced.
1924 Flare dropped about 1 mile to westward, dived.
2045 Surfaced.

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CONFIDENTIAL

March 25, 1945

0528 Dived.
1100 Surfaced on life guard station.
1130 Contacted fighter cover.
1200 Position: Lat. 21° 54' N. Long. 120° 23' E.
1230 Converted #4 F.B.T. to M.B.T. while fighter cover was overhead.
1340 Fighters departed.
     Heard conversation on VHF regarding a crashed plane. No call for
     services. Finally contacted a DUMBO by VHF and asked if we could
     help. Received reply that DUMBO had flown over the scene invest-
     igating and that there were no survivors. Position of crash given
     just North of PESCADORES so we couldn't have assisted anyway.
1500 Everything clear so dived.
1831 Surfaced.
2025 Received orders to new life guard station off HONG KONG. Changed
     course to 272° T.

March 26, 1945

0250 SD and SJ picked up plane at range of 7 miles closing, so dived.
0322 Surfaced.
0530 Dived.
0700 Surfaced.
1200 Position: Lat. 21° 40' N. Long. 116° 43' E.
1449 Dived.
1848 Surfaced.

March 27, 1945

0226 SJ contact on plane distance 9 miles. Not detected by SD and no
     indications on SPR. Plane did not close.
0409 Plane contact at 9 miles on SD closing, so dived. Nothing on SPR
     but moon nearly full and very bright.
0507 Started to get up but found plane at 8 miles so went back down.
0533 Surfaced for morning stars.
0549 Dived.
1200 Position: Lat. 21° 39' N. Long. 114° 22' E.
     During day had many junks in sight.
1909 Surfaced.
     During night two radars kept steadying on us. One, at 80 megs.,
     was rather weak but one at 157 megs. gave the most saturated pip
     we have experienced. Both believed to be land based. Spent greater
     part of night avoiding the numerous junks.

March 28, 1945

0335 Unfriendly plane at 15 miles on SD. Closed to 5 miles, so at
0340 Dived. No indications of radar. Night bright moonlight.
0507 Surfaced. Forced to delay surfacing due to close proximity of 8
     junks.
0547 Dived.

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CONFIDENTIAL
March 28, 1945 (Cont'd)

1200 Position: Lat. 21° 30' N. Long. 114° 25' E.
1552 Sighted floating mine, at range 300 yds. by periscope. Avoided.
1906 Surfaced. Same land based radars tracked us for our interference
     throughout night.

March 29, 1945

0500 SD contact on plane at 11 miles opening to 14.
0548 Dived.
1200 Position: Lat. 21° 48' N. Long. 114° 27' E.
1915 Surfaced. Same two land based radars on SPR. Received orders to
     scout and join TIGRONE, so at
2116 Set course 242° T. at 3 engine speed.

March 30, 1945

     At least one hundred junks contacted and avoided during night while
     steaming to position off HAINAN STRAIT.
0908 Sighted unidentified low plane heading toward us from astern. Dived.
1019 Surfaced.
1200 Position: Lat. 20° 21' N. Long. 112° 21' E.
1600 Surrounded by about 75 junks so dived.
1910 Surfaced.
2000 Proceeding to scouting line with TIGRONE. SJ out of commission.

March 31, 1945

0037 SJ back in commission.
0038 Sight contact with what appeared to be submarine. Simultaneously
     had interference on SJ. Exchanged recognition with USS SEA ROBIN.
0113 Gained position on scouting line.
0337 Submerged for plane contact 4 miles closing.
0358 Surfaced.
0640 Dived for plane contact 9 miles.
0750 Surfaced.
1039 Sighted smoke on horizon, commenced tracking. Course appeared to
     be about 225° T. Speed 16 kts. Sent contact report to TIGRONE.
     Commenced working to get on base course.
1120 Sighted TIGRONE through high periscope. TIGRONE much closer to
     target and at 1135 received word she had dived for attack.
     Continued working to get on base course.
1200 Position: Lat. 19° 08' N. Long. 112° 13' E.
1256 Lost course of contact waiting for word of result of TIGRONE
     attack.
1300 TIGRONE sent message saying contact was hospital ship. Commenced
     pulling clear.

April 1, 1945

1200 Position: Lat. 18° 48' N. Long. 115° 41' E.

     - 10 -

— page 17 —
CONFIDENTIAL
April 2, 1945

0544 Dived for trim.
0658 Surfaced. Set course to close HAINAN ISLAND.
1200 Position: Lat. 18° 57' N. Long. 112° 20' E.

April 3, 1945

0542 Dived.
0649 Surfaced.
1200 Position: Lat. 18° 33' N. Long. 111° 29' E.

April 4, 1945

0540 Dived.
0716 Surfaced.
1200 Position: Lat. 18° 28' N. Long. 111° 49' E.

April 5, 1945

0001 Reported to COMTASKFORCE SEVENTY-ONE for duty and headed south.
0553 Dived.
0710 Surfaced. Proceeding to Area E-8 in JAVA SEA at two engine speed.

April 6, 1945

0605 Dived.
0710 Surfaced.
1200 Position: Lat. 11° 15' N. Long. 110° 41' E.

April 7, 1945

0627 Dived.
0720 Surfaced.
1200 Position: Lat. 6° 59' N. Long. 108° 09' E.

April 8, 1945

0637 Dived.
0729 Surfaced.
1200 Position: Lat. 2° 07' N. Long. 107° 02' E.
1347 Sighted SADDLE IS. bearing 173° T. Sighted several sailboats on
horizon while transiting SINGAPORE STRAITS.

April 9, 1945

0612 Dived at northern approaches to KARIMATA STRAIT.
1200 Position: Lat. 1° 15' S. Long. 107° 56' E.
1813 Sighted SERUTO IS. bearing 116° T.
1938 Surfaced. Proceeding through KARIMATA STRAITS on 3 engines.
2150 SERUTO IS. abeam to port, distance 6 miles.

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— page 18 —
CONFIDENTIAL

April 10, 1945
  0613 Dived.
  1200 Position: Lat. 4° 05' S. Long. 109° 36' E.
  1935 Surfaced.
  2140 Entered Area E-8 at Northwest corner.

April 11, 1945
  0600 Dived.
  1200 Position: Lat. 5° 19' S. Long. 112° 26' E.
  1903 Surfaced.

April 12, 1945
  0549 Dived.
  0830 Surfaced.
  1200 Position: Lat. 6° 24' S. Long. 114° 15' E.
  1915 Exchanged recognition by SJ with friendly submarine.

April 13, 1945
  0553 Dived.
  0900 Surfaced.
  1200 Position: Lat. 6° 08' S. Long. 114° 38' E.

April 14, 1945
  0552 Dived.
  0849 Surfaced.
  1200 Position: Lat. 6° 03' S. Long. 114° 45' E.
  1340 Plane on SD distance 10 miles. Dived.
  1527 Surfaced.

April 15, 1945
  0550 Dived.
  1200 Position: Lat. 5° 46' S. Long. 113° 58' E.
  1844 Surfaced.
  2230 Received life guard assignment for tomorrow. Proceeding.

April 16, 1945
  0556 Dived.
  0658 Surfaced on life guard station. No call for services, so at 1100
    commenced clearing area.
  1200 Position: Lat. 6° 24' S. Long. 113° 30' E. Passed through about
    100 sail boats during day.

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— page 19 —
CONFIDENTIAL

April 17, 1945

0024 Picked up LOMBOK on radar bearing 175° T., 94,000 yards.
0215 For about 3 minutes had strong radar interference on SJ. Origin
     and character unknown.
0435 SJ contact 8000 yds. Maneuvered to avoid. There was sweeping SJ
     type interference from this target but it never steadied on us.
     Target tracked on course 010° T., at speed about 10 kts., for a
     while and then seemed to mill around. Possibly a patrol boat but
     probably a friendly submarine northbound.
0520 Dived for transit of LOMBOK STRAIT.
0905 NUSAR IS. abeam to starboard. Transit uneventful, thanks
     to a favorable current which reached a maximum of 5.5 kts., through
     narrowest portion.
1832 Surfaced.

April 18-21, 1945

Proceeding to FREEMANTLE at 2 engine speed. Daily 1200 positions:

     18th   Lat. 13° 26' S.   Long. 114° 49' E.
     19th   Lat. 18° 18' S.   Long. 113° 25' E.
     20th   Lat. 23° 12' S.   Long. 112° 23' E.
     21st   Lat. 28° 24' S.   Long. 112° 36' E.

April 22, 1945

0800 Rendezvous with escort and proceeded to FREEMANTLE, WESTERN
     AUSTRALIA.

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— page 20 —
CONFIDENTIAL

C. WEATHER
Weather was normal for the period concerned, and in accordance with the
description in the Coast Pilots.

D. TIDAL INFORMATION
a. While steaming a rhumb line rom PEARL to SAIPAN a set of 0.3 to 1.2
kts. to the northeast was observed during the latter half of February.
b. At Lat. 21° 30' N. Long. 120° E. a set of 260° to 290°, drift 1 to 1.5
kts., was observed during the latter part of March.
c. At Lat. 21° 30' to 22° N. Long. 114°-115° E. zero current was observed
on March 28 and 29.
All other observations conformed with H.O. Publications.

E. NAVIGATIONAL AIDS
None observed.

F. SHIP CONTACTS
No. | Time | Lat.      | Type(s)  | Initial | Est. Course | How       | Remarks
    | Date | Long.     |          | Range   | and speed   | Contacted |
----|------||||||
1   | 1039 | 19°26'N   | Hospital | 30,000  | 225/16 kts. | Smoke     | Identified by
    | 3/31/45| 112°32'E. | ship     |         |             |           | TIGRONE who dove
    |      |           |          |         |             |           | for attack.
2   | 0435 | 8°17'S    | Unknown  | 8,000   | 010/10 kts. | SJ        | Either a north bound
    | 4/17/45| 115°52'E. |          |         |             |           | friendly submarine
    |      |           |          |         |             |           | or a patrol vessel.

G. AIRCRAFT CONTACTS
Of the hundreds of planes seen west of FORMOSA and in the SOUTH CHINA SEA
all but three or four were identified as friendly. Of the numerous en-
counters with night flying planes at least half of the contacts were
identified as friendly by IFF. From the above it is considered that enemy
air activity in that area is at a low ebb.

From the SOUTH CHINA SEA to the JAVA SEA, including 5 days spent in the
JAVA SEA, only three or four plane contacts were made, one of which was
a friendly search plane. It is considered that enemy air searches in
this area are very ineffective.

I. MINES
Sighted a floating mine through periscope in position Lat. 21° 41' N.
Long. 114° 42' E.

J. ANTI-SUBMARINE MEASURES AND EVASION TACTICS
No anti-submarine vessels encountered.

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— page 21 —
CONFIDENTIAL

K. MAJOR DEFECTS AND DAMAGE

ENGINEERING AND ELECTRICAL

1. Main Engines

     The only abnormal conditions experienced were the number of bearing
     and liner failures. It was necessary to replace nineteen upper connect-
     ing rod bearing halves on #3 main engine. This is the only engine with
     Satco bearings, the others being steel backed, and all replacements were
     made with Satco bearings.
     Six cylinder liners were replaced, and with one exception they were
     all found to be cracked near the top of the water space just below one of
     the liner studs.

2. Hull Ventilation System

     The booster blower unit was found to be unsatisfactory. Moisture
     collected in the blower housing because of the inadequacy of the drains
     from the cooling coils. The motor failed when this moisture grounded the
     field coils. In addition the blower makes so much noise that normal con-
     versation cannot be heard in the control room or forward battery with the
     blower running.

HULL AND MACHINERY

1. Bow plane rigging and tilting gear does not operate properly. The
     time necessary to rig-out the planes varies from 35 to 40 seconds. This
     time should not exceed 25 seconds. The rigging-in time is also excessive.
     When the planes reach a position approximately 3° from the fully
     rigged-out position, a loud, hammer-like noise is heard in the forward
     torpedo room and is transmitted through hydraulic lines to the control
     room. The noise suggests air in the system, but the system was complete-
     ly vented daily for one week with negative results. The bow-planes are
     also noisy when tilting. Causes for this noise are unknown to the ship's
     force.
2. Both periscopes have been unsatisfactory during the patrol. The
     periscopes have been subjected to a vacuum and then recharged with
     nitrogen on six different occasions while at PEARL and SAIPAN. The
     upper window in periscope #2 was replaced in SAIPAN. Neither measures
     have improved the performance of the periscopes. The periscopes are
     foggy and appear to have internal dirt present on the prisms or the
     upper window.
3. The ballasting of the ship is not correct. The last two weeks of
     the patrol the variable water became very low and the two fresh water tanks
     were allowed to go dry to improve the condition. It was thought that
     we would have to make Safety Tank a variable tank before the patrol ended
     but a favorable change in density was experienced which made this un-
     necessary. It is recommended that approximately 20,000 lbs. of lead
     ballast be removed.

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— page 22 —
CONFIDENTIAL

K. MAJOR DEFECTS AND DAMAGE (Cont'd)

ORDNANCE

1. The Mark 1 Mod. 1 signal projector located on bridge is unsatis-
   factory due to corrosion on the internal surface of the barrel making
   it impossible to fire a recognition signal. The barrel should be made
   of non-corrosive steel or should be plated to stop corrosion.

2. In checking torpedo number 57977 for dead cells prior to refresher
   charge, it was found that cell number 27 had an open circuit voltage
   less than 2.0 volts. It was also found that the specific gravity was
   80 points below the average of the other cells. The cell was jumped out
   in accordance with current maintenance instructions.

L. RADIO

Reception of Subfox in the CHINA Seas area was far from good, with
serials being missed prior to shifting to opcontrol of CTF 71. Daytime recep-
tion on 16730 was satisfactory, but at night 6045 was blocked out
by a JAP broadcasting station, 9050 faded completely at 1530Z, and GUAM's
simultaneous keying on 9090 was frequently unreadable. Particularly in the
early morning hours 9090 seemed to hold up and become jumbled, sometimes being
blocked out completely.

Three serials were missed while copying VIXO, with frequent fading caus-
ing missed messages and garbles. VHM's 1400 rebroadcast was copied several
times, with good results. A partial log follows:

| Date       | Lat.Long. | Station | Freq. | Comments

— page 23 —
CONFIDENTIAL
L. RADIO (Cont'd)

    Communications on the four wolfpack frequencies were satisfactory,
    with frequent exchanges with the TIGRONE while a member of HIRAM'S HECKLERS.
    Many submarines in the area seemed to tune their transmitter at the time for
    shifting frequencies; these frequencies, as was discovered by checking the
    position of boat, will carry 600 miles. The area will carry 600 miles.
    Authentication, as usual, was great weakness. The shackle cipher employed
    by COMSUBPAC boats, while SOVESPAC submarines in adjoining areas continued
    to use CSP 1286, added to the confusion.

    VHF was used for communication with fighter cover while on life guard
    duty for SUBPAC, and, after first picking it up on the APR, for listening in
    on the progress of the raids on CHANNEL B. The only major casualty to radio
    equipment occurred when a filter condenser in the VHF burned out on our last
    day on station; a makeshift rig using a condenser from the APR spares put the
    equipment back into operation. Spares and an adequate materiel instruction
    book should be furnished if submarines are expected to keep this equipment
    operating. Another weak spot in the VHF as now installed is loud and annoy-
    ing interference from the SD-5.

M. RADAR

    SJ RADAR

    The SJ-1 radar provided satisfactory operation for 617 hours on patrol,
    with only 74 hours lost from materiel failures. The PPI and A scope were
    employed alternately in searching, with the A scope giving superior results
    on SJ interference from other submarines and slightly better results in
    picking up small targets. Recognition signals were exchanged often with
    other boats, with the keying system authorized by COMSUBPAC and installed at
    PEARL HARBOR proving its worth.

    A "steerable sweep", allowing the operator to get the equivalent of
    a precision sweep on the PPI by triggering the PPI sweep with the range
    instead of the transmitter pulse, was installed at PEARL HARBOR by the ship's
    technician, with "unofficial" base help. Although there was no opportunity
    to use this device on a convoy, it allowed us to get accurate ranges on land
    up to 80,000 yards by setting the pip at the outer rim of the 43,000 yard
    PPI scale, and triggering that scale with the range pulse. The value of the
    SJ for navigation was greatly improved by this means.
    Initial contacts at the following ranges were obtained:
    1. Land (elevation 9000 ft.) 120,000 to 140,000 yards (Secondary sweep)
    2. Land (elevation 3000 ft.) 92,000 yards
    3. Land (elevation 650 ft.) 55,000 yards
    4. Chinese junks 11,000 to 13,000 yards
    5. U.S. Submarines 10,800 yards

    The first materiel failure, overheating of the reduction gear box in
    the training system after five hours of operation from PEARL, was found to
    be caused by the failure of PEARL technicians to replace the lubricating oil
    after breaking the unit down for repairs. They also failed in the repair
    job, as another complete overhaul of this unit was required at SAIPAN, where
    several small parts were machined to replace those twisted out of shape by
    misalignment.

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— page 24 —
CONFIDENTIAL
M. RADAR (Cont'd)

     The whole clutching arrangement for hand-power shifting is crude and slow; it
is impossible to shift unless the motor is running, which means that a casualty
to the training motor will put both hand and power train out of commission.
This MANITOWOC installation, and the rheostat-controlled one-directional power
train installed at PEARL, should be replaced during the coming refit.

     Electronic failures were as follows:
     1. Poor definition of range step on main and precision sweeps.
        Replaced V-15 and V-16 (6AG7's) from spares.
     2. Excessive grass on PPI and "A" scopes. Replaced V-201 and V-202
        (6AC7's) in I.F. Amplifier Strip.
     3. Range step jumping erratically as range crank was rotated.
        Replaced V-501 (6AC7).
     4. Transmitter current reading high (180 m.a. at maximum setting
        of PRF control and minimum setting of "ON-TIME" control), ring
        time slightly below normal. Replaced V-1 and V-2 (6SN7), V-9
        (5D21), and V-10 (705A). No improvement. Replaced V-11 (706AY)
        and V-12 (721A) and retuned equipment. Current decreased to 160
        ma. with same settings as above, but ring time still below normal.
        Replaced crystal detector and realized normal ring time.
     5. Primary of transformer T-1 in PPI unit shorted out. No spares,
        so PPI out of operation after April 18.

SD RADAR

     The SD-5 radar gave excellent results the entire patrol, and is a
great improvement over previous models. It was keyed every 40 seconds while
on the surface during the day and every 2 minutes during bright moonlight
nights. During dark nights it was warmed up, with the main raised, to be
keyed on any APR contact. Ranges up to 60 miles were obtained on friendly
bombers, while fighters were picked up at about 20 miles. Blind spots varying
from 13 to 17 miles in range were noted. Low-flying planes came in to 10 miles
without being detected.

IFF AND APR

     Both PEARL HARBOR and the FULTON assured us that our IFF equipment
was operating satisfactorily, in spite of what seemed to be erratic triggering
of the BN and continuous triggering of the BK. When the BN lost all sensitiv-
ity on patrol, caused by a cracked 6SN7, a shorted 6AC7 in the IF circuit, and
a low mu 6J6, the cause of the other trouble was also located. The sync cable
from the SD had been connected to the ABK squelch circuit, while the pulse
output from the BN had been connected to the BN sync jack.

     The APR operated satisfactorily with the exception of one loss of
sensitivity corrected by replacing the oscillator tube in the tuning unit.
When set on 88 or 147 megacycles the APR blocked the SD receiver, and had to
be tuned off those values before the SD could properly be operated.

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— page 25 —
CONFIDENTIAL

N. SONAR GEAR AND SOUND CONDITIONS

Continuous watch was maintained submerged on both the JP and the QB
or JK equipment, with no contacts on either.

Dynamic phones for the JP held up well under continuous operations,
without the trouble from moisture experienced with crystal phones. The ear-
muffs provided with the phones became sweat-soaked and greasy under tropical
conditions, and were replaced with a home-made bakelite headpiece. Only minor
materiel difficulties were encountered with either sound heads or gear. Cables were
sheared on both sound heads and had to be spliced; the replacement of these
cables with slip rings will be a major improvement.

The fathometer was used several times, giving good results except that
it did not appear to have enough sensitivity to give a good loud speaker sig-
nal.

O. DENSITY LAYERS.

Bathothermograph cards are being forwarded in accordance with current
instructions. No unusual conditions were noted.

P. HEALTH, FOOD AND HABITABILITY

Health was good with the exception of an attack suffered by a TM2c
who has made 8 previous patrols. This man went into a coma for the better
part of two days during which time he could neither talk nor understand what
was being said to him. He would sit upright in his bunk for hours with all
muscles tensed and during these periods had difficulty breathing. When he
finally came out of it the only explanation he could give was that he had had
bad dreams. This case has been tentatively diagnosed as Psychoneurosis. De-
tailed report of this case is being submitted to the Medical Officer.

Food was good and well prepared. A greater variety and quantity
of fresh frozen foods would have been greatly appreciated.

Habitability was good. The booster blower and airconditioning coils
installed at PEARL HARBOR did much to make the forward end of the boat more
habitable until the blower failed. This blower, however, makes entirely too
much noise both in the control room and the officers quarters.

It was necessary for four men to use "hot" bunks. Request is being
made to install four extra bunks in the Crew's Quarters.

Q. PERSONNEL

a. Number of men detached since commissioning 6
b. Number of men on board during patrol 76
c. Number of men qualified at start of patrol 44
d. Number of men qualified at end of patrol 64
e. Number of unqualified men making their first patrol 32

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— page 26 —
CONFIDENTIAL

Q PERSONNEL (Cont'd)

The state of training was good following the training periods in
PANAMA and PEARL HARBOR. The eagerness of all hands to learn and perform
their duties well was outstanding. The performance of duty of officers and men
was at all times in accordance with the highest traditions of the naval services.
The lack of contacts on this patrol was a disappointment to all hands.

R. MILES STEAMED - FUEL USED

PEARL to SAIPAN | 3704 Miles | 43,383 Gals.
SAIPAN to AREA | 928 Miles | 10,367 Gals.
IN AREA | 9279 Miles | 87,485 Gals.
AREA to FREEMANTLE | 1490 Miles | 18,135 Gals.

S. DURATION

Days enroute to area | 17*
Days in area | 42
Days enroute to FREEMANTLE | 5
Days submerged | 12
Total Patrol | 64 days
* Including 2 day lay-over in SAIPAN.

T. FACTORS OF ENDURANCE REMAINING

TORPEDOES | FUEL | PROVISIONS | PERSONNEL
No. | Gals. | Days | Days
Full Load | 700 | 15 | 15

Limiting factor this patrol.
Fuel and operation order.

U. COMMUNICATIONS. RADAR AND SONAR COUNTERMEASURES

1. Radio Jamming

Date-Time | Location | Freq. | Type Jamming | Remarks
1158Z | 21-20N | 2226 | Keyed CW (Beam) | S5 jamming, submarine stopped
13 March | 120-06E | | | sending halfway thru message.

0600Z | 20-00N | 4475 | Keyed CW (Beam) | S5 jamming, signals almost
14 March | 120-00E | | | unreadable. Keyed CW, MCW, and
(and thereafter) | | | | steady carrier all used at
| | | | various times to jam this
| | | | frequency.
1500Z | 21-24N | 8470 | Keyed CW (Beam) | Message cleared through
25 March | 119-32E | | | jamming with no delay.

2. Enemy Radar

The SPR-1 was used as an early warning device, with only the 80-300 mc.
tuning unit being used on station. Search was on 140-180 mc., with a complete
sweep of the frequency range every 3 minutes. Saturation signals were obtain-
ed on land-based radar at ranges up to 40 miles.

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— page 27 —
CONFIDENTIAL
U. COMMUNICATIONS, RADAR AND SONAR COUNTERMEASURES (Cont'd)

In addition to the contacts logged below, pings from ABK's of
friendly planes were picked up on eight different occasions while in the
vicinity of 21-45N, 120-30E. These ABK's were apparently being triggered by
enemy land-based radar on 158 mc. Friendly plane radar was detected on 105
and 175 mc.

Enemy Contacts:

Date       | Ship's    | Freq.mc.    | Pulse width   | Remarks
           | Position  | (corrected) | PRF | (microsec.) |
1 March    | 16-25N    | 108         | 600 | 15          | Sweeping 3/5 rpm. Apparently
           | 145-15E   |             |     |             | on ROTA
4 March    | 14-21N    | 108         | 600 | 15          | Sweeping 1½ rpm.
           | 143-45E   |             |     |             |
10 March   | 20-52N    | 151         | 1000| 6           | Steady; plane radar?
           | 120-35E   |             |     |             |
12 March   | 19-18N    | 156         | 1200| 6           | Sweeping
           | 121-53E   |             |     |             |
13 March   | 21-31N    | 159         |     | 20          | Sweeping 20 rpm. SD contact.
           | 120-00E   |             |     |             |
13 March   | 20-55N    | 149         | 500 | 10          | At irregular intervals after
           | 120-20E   |             |     |             | initial strong contact.
14 March   | 20-18N    | 100         | 1000| 18          | Sweeping slowly; land-based
           | 120-18E   |             |     |             |
14 March   | 21-11N    | 150         | 3000 plus | 0-2   | SD contact; friendly plane?
           | 120-25E   |             |     |             |
14 March   | 21-05N    | 158         | 500 | 6           | SD contact
           | 121-30E   |             |     |             |
16 March   | 21-46N    | 160         |     | 12-15       | 30 rpm. sweep; SD contact.
           | 120-05E   |             |     |             | Friendly plane?
16 March   | 21-55N    | 158         | 700 | 2.5         | SD contact at 48 miles.
           | 120-17E   |             |     |             |
16 March   | 22-09N    | 97          | 1000| 30          | Sweeping; land-based
           | 120-28E   |             |     |             |
17 March   | 22-48N    | 282         | 300 |             | Steady
           | 120-13E   |             |     |             |
18 March   | 21-08N    | 292         | 300 | 1.5         |
           | 120-26E   |             |     |             |

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— page 28 —
CONFIDENTIAL
U. COMMUNICATIONS, RADAR AND SONAR COUNTERMEASURES (Cont'd)

| Date      | Ship's Position | Freq. mc. (corrected) | PRF  | Pulse width (microsec.) | Remarks

— page 29 —
CONFIDENTIAL
U. COMMUNICATIONS, RADAR AND SONAR COUNTERMEASURES (Cont'd)

| Date       | Ship's Position | Freq. mc. (corrected) | PRF     | Pulse width (Microsec.) | Remarks

— page 30 —
CONFIDENTIAL

V. REMARKS (Cont'd)

          The area CONVOY COLLEGE was devoid of any contacts with enemy ships.
During the period this ship was in CONVOY COLLEGE not an enemy ship was report-
ed in the area either by other submarines or by planes. The only enemy shipp-
ing reported in the vicinity was all within the BLIND BOMBING ZONE along the
CHINA COAST. Even sampans were nonexistent, in spite of the fact that previous
patrols in the area reported contacting hundreds of them, one submarine re-
porting contact with 700 sampans in the same area.

          The volume of traffic on the WOLFPAC frequency was a surprise to
the Commanding Officer. We heard transmissions from boats 600 miles away so
the enemy must be able to DF our boats quite easily and keep a relatively
accurate check on the location of many of the submarines in the area.

          The Commanding Officer, officers and crew wish to express their
appreciation to the officials and workmen of the MANITOWOC SHIPBUILDING COMPANY
for another fine MANITOWOC built submarine.

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— page 31 —
SUBMARINE SQUADRON THIRTY

FCS-30/A16-3
Serial: 018
C-O-N-F-I-D-E-N-T-I-A-L
[HANDWRITTEN: FIRST]
ENDORSEMENT to
USS LAMPREY (SS372) -
Report of First War
Patrol.

23 April 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. LAMPREY (SS372) - Report of First War Patrol.

1. The first war patrol of the LAMPREY, conducted in the
Luzon Straits, South China Sea and Java Seas areas was of sixty four
days duration, forty two of which were spent in the assigned areas.
Lifeguard duty was performed continuously from 12 to 25 March. From
29 March to 4 April the LAMPREY was a member of a coordinated search
and attack group of which the commanding officer of the TIGRONE was
O.T.C.

2. Area coverage was excellent but no contacts worthy of
torpedo fire were made. On 31 March smoke contact was made on a ship
later identified by the TIGRONE as a hospital ship.

3. The LAMPREY returned from patrol in good material
condition. Material defects noted will be corrected during a normal
refit period.

4. The Squadron Commander welcomes the LAMPREY to the
Southwest Pacific and congratulates the commanding officer, officers
and crew upon completion of an arduous patrol which provided no oppor-
tunity to inflict damage.

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

[STAMP: 6 0580]

— page 32 —
FE24-71/A16-3
UNITED STATES NAVY
14/dn

Serial 0767
[HANDWRITTEN: ]
C-O-N-F-I-D-E-N-T-I-A-L
SECOND ENDORSEMENT to:
USS LAMPREY Conf. Ltr. A16-
Serial 019, dated 22 April,
1945. Report of First 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. LAMPREY (SS372) - Report of First War Patrol,
Comment on.

1. The First War Patrol of the LAMPREY, under the command
of Commander W. T. NELSON, U.S.N., was conducted in LUZON STRAITS,
and the SOUTH CHINA and JAVA SEAS. From 29 March to 4 April LAM-
PREY was a member of a Coordinated Attack Group of which the Com-
manding Officer of the TIGRONE was (OTC).

2. No contacts worthy of torpedo fire were made.

3. Lifeguard services were performed from 12 to 25 March.
No opportunity for rescue presented itself. The Commanding Officer's
remarks (section V) concerning lifeguard procedure are noted with
interest, and it is believed that the steps already taken to con-
trol traffic on the lifeguard frequency (4475 kcs) are proving ade-
quate.

4. The award of the Submarine Combat Insignia is not
authorized for this patrol.

5. The Force Commander congratulates the Commanding Of-
ficer, Officers and Crew of the LAMPREY upon the completion of this
arduous patrol and upon their performance of lifeguard services.

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

- 1 -

[STAMP: 6 0580]

— page 33 —
FE24-71/A16-3
UNITED STATES NAVY
Serial 0767
[STAMP: C-O-N-F-I-D-E-N-T-I-A-L]
30 April 1945.

SECOND ENDORSEMENT on
USS LAMPREY Conf. Ltr. A16-
Serial 019, dated 22 April,
1945. Report of First War
Patrol.

Subject: U.S.S. LAMPREY (SS372) - Report of First War Patrol,
Comment on.

— page 34 —
UNITED STATES FLEET
COMMANDER SEVENTH FLEET

A16-3(8)(F-3-4/whr)
Serial 03005

[HANDWRITTEN in box: Reg. No. F448]
[HANDWRITTEN in box: B. S. No. 6 0580]

[STAMP: 23 MAY 1945]

CONFIDENTIAL

THIRD ENDORSEMENT on:
USS LAMPREY Conf. Ltr.
A16 serial 019, dated
22 April 1945.

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

Subject: U.S.S. LAMPREY (SS372) - Report of First War
Patrol.

1. Forwarded.

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

— page 35 —
[HANDWRITTEN: 1st copy]

SS372/A16
Serial 021
[STAMP: DECLASSIFIED]

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

Subject: U.S.S. LAMPREY (SS372)
Care of Fleet Post Office,
San Francisco, California,
29 June 1945.

Subject: U.S.S. LAMPREY (SS372), Report of War Patrol Number Two.

Enclosure: (A) Subject Report.
(B) Track Charts.
(C) Navigational time plot of Torpedo Attack No. 1.

1. Enclosure (A), covering the second war patrol of this vessel
conducted in SOUTH CHINA SEA and SIAM GULF during the period 21 May 1945 to
29 June 1945, is forwarded herewith.

[SIGNATURE: R. B. McDonald]
L. B. McDONAID.

[STAMP: DECLASSIFIED-ART. 0445, OPNAVINST 5510.C]
BY [HANDWRITTEN: OP-09B9C] DATE [HANDWRITTEN: 5/31/22]
[STAMP: DECLASSIFIED]

[HANDWRITTEN: 132584]

— page 36 —
CONFIDENTIAL
(A) PROLOGUE.

Arrived FREMANTLE, WESTERN AUSTRALIA, from first war patrol on
22 April, 1945. Refit commenced on 24 April by Subdiv. 301 Relief Crew and
U.S.S. CLYTIE. ST radar and directional APR installed during refit. Com-
mander W.T. NELSON, U.S.N., was relieved as Commanding Officer by Lieutenant
Commander L. B. McDONALD, U.S.N., on 8 May 1945.

Conducted training exercises in FREMANTLE AREA from 9 May to 19 May.
Ready for sea and departed FREMANTLE on 21 May 1945.

(B) NARRATIVE.

OFFICERS ATTACHED NO. PREVIOUS PATROLS

Lieut.-Comdr. L. B. McDONALD, U.S.N. 6
Lieutenant W. T. ROSSELL, Jr.,U.S.N.R. 7
Lieutenant W. J. GODFREY, Jr.,U.S.N.R. 6
Lieutenant M. W. BATTERMAN, U.S.N.R. 1
Lieut.(jg) C. C. BIESECKER, U.S.N.R. 1
Lieut.(jg) R. P. BARTLETT, U.S.N. 4
Lieut.(jg) J. R. CONANT, U.S.N.R. 1
Lieut.(jg) J. D. AIDEN, U.S.N.R. 7
Ensign L. C. MORRIS, U.S.N. 7
Ensign G. F. WILLIAMS, Jr., U.S.N.R. 0

C.P.O.s ATTACHED NO. PREVIOUS PATROLS

AKERS, R. H., CEM(PA)(SS), U.S.N. 9
ROBBINS, G. B., CQM(T)(SS), U.S.N. 8
STIMAC, C. F., CMOMM(PA)(SS), U.S.N. 8
TOMLINSON, J. L., CTM(PA)(SS),U.S.N. 7
WARD, L. A., CEM(T)(AA)(SS), U.S.N. 9
WARNER, W. D., CMOMM(AA)(SS),U.S.N. 5
WOFFORD, J. T.,CRM(PA)(SS), U.S.N. 10

21 May 1945

1300(H) Underway from FREMANTLE, WESTERN AUSTRALIA for second war patrol
in accordance with Commander Task Force SEVENTY-ONE operation
order. Met escort off ROTTNEST ISLAND and conducted training ex-
ercises until
1940(H) When escort was released and course set for LOMBOK STRAIT.

22 May 1945

Underway LOMBOK STRAIT.

- 1 - ENCLOSURE (A)

— page 37 —
CONFIDENTIAL
(B) NARRATIVE (Cont'd)

23 May 1945

     0255 (H) Exchanged recognition with USS BECUNA.
     1400 (H) Changed clocks to
     1500 (H)

24 May 1945

     0620 (I) Exchanged recognition with USS CAVALLA.

25 May 1945

     Underway LOMBOK STRAIT.

26 May 1945

     0030 (I) Entered LOMBOK STRAIT.
     0230 (I) Completed transit of LOMBOK STRAIT without incident.
     0740 (I) Sighted SEBANA KALA ISLAND.
     1648 (I) Sighted MATA SIRI ISLAND.
     1938 (I) No. 1 engine out of commission with two broken head studs.
     2100 (I) Had collision with submerged object which bent the pit log sword
               arm. Came to the conclusion that we had hit a submerged log or
               wreck. Continued to the northward to investigate possible anchor-
               age in the harbor on MATA SIRI ISLAND in the LAUROT ISLAND group
               at
     2124 (I) Scanned harbor by radar and eye, no ships or signs of activity.
               Change course to look over KALAMBAN ISLAND and proceed to station.

27 May 1945

     0035 (I) SJ contact 290° T., 13,000 yards closing fast. Turned away and
               commenced tracking. The target was a DE or a FF zig zagging
               radically, speed 17. The pit log was still not operating but
               engineer officer and his men were working fast and furiously to
               get it back in operation, #1 engine still out of commission. We
               speeded up to full on three engines to endeavor to get on his track.
               With his radical zig plan we were able to gain bearing on him very
               slowly, we now knew his base course to be 110° T.
     0135 (I) Pit log back in commission. We were still gaining on him slightly.
               The moon was full and bright as day so I decided to make a night
               periscope attack using ST if we could possibly get on his track.
     0200 (I) Target zigged toward presenting us with a 15° starboard angle on
               the bow, range closing.
     0212 (I) Dived to commence attack. By this time the range had closed to
               7000 yards and I am sure he saw us because immediately he zigged
               away and the range opened fast.

- 2 -

— page 38 —
CONFIDENTIAL
(B) NARRATIVE (Cont'd).

27 May 1945 (Cont'd)

0225 (I) Surfaced and commenced tracking him again. I figured he would
     head for LAUROT ISLANDS to anchor so we also headed for the is-
     lands hoping he would anchor. At
0247 (I) Target, figuring he had left us behind came back, now making six-
     teen knots, resumed his base course and ceased zig-zagging. At
     this time we were in a poor position for an attack since we had
     lost about twenty degrees bearing during our dive. We continued
     tracking hoping he would change course toward as we had three
     tenths of a knot speed advantage.
0440 (I) We were in a position now where we could shoot at him setting our
     MK 14's on lower power with a run of 6000 yds. I decided to take
     a chance hit because we had his speed clocked to a tenth of a knot
     right on. Sent contact message on Wolf Pack fre-
     quency in case we missed. At
0452 (I) Dived and pointed our stern toward him. At
0455 (I) Took a set up on the target. Target had turned toward, angle on
     the bow now 30° starboard and slowed down. The sound man reported
     the target tuning his sound gear. I figured we were in for a depth
     charging and he had seen us all the time or was tracking us by
     radar, although we had no indication on the APR in the high frequency band. He probably had
     a radar in
0458 (I) After several set ups, determined target course and speed. He had
     now slowed to 13.5 knots, pinging long scale. Set torpedoes on
     depth three feet, and came to a course for a 90° track.
0511 (I) We were satisfied with the set up and fired tubes 8, 9, and 10
     with near zero gyro angles, torpedo run 3600 yds. All torpedoes
     missed. When torpedoes past, target zigged away headed north.
     Last range on ST 15,000 yds. heading away. Target in the mean
     time milled around changed speed several times, and was pinging.
     We were in hopes that he would come close enough to get another
     shot. At
0552 (I) Surfaced. Target no longer visible on radar screen. Set course
     to continue on the way to our area.
0639 (I) Submerged to avoid possible search.
1809 (I) Surfaced.
2057 (I) Sighted GREAT MASALEMBO ISLAND and closed to investigate.
2137 (I) Radar and visual sweep revealed no targets so resumed course for
     area.

28 May 1945

0257 (I) Picked up BAWEAN ISLAND on SJ.
0700 (I) Changed course to head for JAPARA on JAVA coast.
1129 (I) Submerged.
1412 (I) Surfaced.
1648 (I) Sighted KRIMOEN DJAWA ISLAND.
1943 (I) USS BLUEBACK surfaced at a distance of 7000 yds. Exchanged recog-
     nition and closed to exbhange information.

- 3 -

— page 39 —
CONFIDENTIAL
(B) NARRATIVE (Cont'd).

28 May 1945 (Cont'd).

2018(I) While sending message by blinker to BLUEBACK made radar contact
          189° T, 12,000 yards. Commenced tracking and determined target
          to be zig zagging at ten knots on easterly course.
2120(I) BLUEBACK closed for attack.
2130(I) Target, which appears to be 600 ton escort vessel, now chasing
          BLUEBACK who is getting away easily. Fell in astern of BLUEBACK
          and commenced closing for coordinated gun attack.
2142(I) Opened fire with 5 inch gun. Target making radical maneuvers and
          returning fire on us and BLUEBACK with four guns. His aim not
          very good. We expended 40 rounds of 5 inch ammunition and obtain-
          ed two sure hits.
2209(I) Broke off action with target burning but still firing all his guns.
          Target retired to the west, BLUEBACK to the north and we to the
          south.
2317(I) Made radar and visual sweep of JAVA coast north of JAPARA with no
          results.
2339(I) Set course for KARIMATA STRAIT.

29 May 1945

1328(I) Sighted DISCOVERY EAST BANK LIGHT.
2130(I) Transited KARIMATA STRAIT without incident.
30 May 1945

0700(I) Entered assigned area.
0723(I) Submerged.
2002(I) Surfaced.

31 May 1945

0800(I) Commenced life guard duties.
0952(I) Plane contact on SD at 24 miles, no IFF.
0956(I) Contact closed to 10 miles and being unable to get response on VHF
          submerged.
1800(I) Surfaced and commenced life guard duties.
2044(I) Came alongside two-masted junk to inspect for contraband. Executive
          Officer went aboard. The crew consisted of four CHINESE and the
          cargo of soap and an unknown type of grain. The captain of the
          junk stated that he was taking his cargo to sell at the CHINESE
          market in SINGAPORE but would not or could not say from what port
          he had come.
2059(I) Gave the captain of junk with pack of cigarettes and a sack of
          beans and let him proceed.

- 4 -

— page 40 —
CONFIDENTIAL
(B) NARRATIVE (Cont'd).

1 June 1945

0037 (I) Sighted PENGIHOE ISLAND.
0800 (I) Commenced life guard duties.
0900 (I) SD contacts at 25 and 28 miles, no IFF.
0905 (I) Contacts opened out and were lost.
1000 (I) Submerged.
1806 (I) Surfaced and resumed life guard duties.
1809 (I) SD contact 36 miles with IFF.
1820 (I) Sighted and established VHF communication with three Liberators.
          Plane wanted to know what we were doing in this locality and also
          informed us that a plane had crashed on BINTAN ISLAND at 0900 this
          date.
1839 (I) Lost contact with planes.
2302 (I) Obtained fix on PENGIHOE ISLAND.

2 June 1945

0800 (I) Commenced life guard duties.
0929 (I) SD contact at 20 miles, no IFF.
0932 (I) Range 8 miles. Submerged.
1805 (I) Surfaced. Resumed life guard duties.
2124 (I) Obtained fix on PENGIHOE ISLAND.

3 June 1945

0800 (I) Commenced life guard duties.
1012 (I) Submerged.
1759 (I) Surfaced and resumed life guard duties.
1850 (I) Sighted submarine through high periscope.
1851 (I) Submerged and commenced approach.
1903 (I) Identified submarine as BRITISH. Surfaced and exchanged recog-
          nition and gossip with H.M.S. TRENCHANT.
2058 (I) Came alongside and sent boarding party aboard junk. The crew
          of the junk said they were CHINESE enroute SINGAPORE to BORNEO.
          The cargo consisted of grain, sneakers, raincoats, and prayer
          mats.
2115 (I) Released junk and set course for station north of ATAS ISLAND.

4 June 1945

0425 (I) Arrived at and commenced patrolling station north of ATAS ISLAND.
0728 (I) Submerged.
2030 (I) Surfaced.

5 June 1945

0702 (I) Submerged.
2025 (I) Surfaced.

          - 5 -

— page 41 —
CONFIDENTIAL

(B) NARRATIVE (Cont'd).

6 June 1945

     0714(I) Submerged.
     2027(I) Surfaced.

7 June 1945

     0713(I) Submerged.
     2024(I) Surfaced.

8 June 1945

     0715(I) Submerged.
     2027(I) Surfaced.

9 June 1945

     0126(I) Set course for GULF OF SIAM.
     0730(I) Exchanged recognition with USS COBIA.
     0917(I) Sighted ANAMBA ISLANDS.

10 June 1945

     0800(I) Entered GULF OF SIAM.
     1052(I) Radar contact on plane at 20 miles. Contact faded out.
     1125(I) Radar contact on plane at 8½ miles. Contact closed to 8
                      miles so made quick dive.
     1405(I) Surfaced.

11 June 1945

     0234(I) Made radar contact with KOH PENNAN.
     0750(I) Dove and conducted submerged patrol off LEM CHONG PRA.
     2112(I) Surfaced.

12 June 1945

     0804(I) Submerged.
     2122(I) Surfaced and closed east coast of SIAM.
     2200(I) Made radar search of coast south of GOH SATTAGOOT until

13 June 1945

     0206(I) When course was set for approaches to KAMPONG SOM BAY.
     0630(I) Exchanged recognition with USS BERGALL by radar.
     1117(I) Exchanged recognition with USS BERGALL by radar.
     1752(I) Sighted VEER ISLET and commenced surface patrol of approaches
                      to KAMPONG SOM BAY.

- 6 -

— page 42 —
CONFIDENTIAL
(B) NARRATIVE (Cont'd).

14 June 1945

     1213(I) Sighted and obtained fix on VEER ISLET and KOH PRINS.
             Set course for KOH DUD.
     2235(I) Commenced patrolling off southeast end of KOH DUD.

15 June 1945

     0432(I) Set course for patrol station assigned by ICEFISH.
     1400(I) Commenced surface patrol on line between PENNAN CHANNEL and
             RONG SAM LEM east of 101° 40' E. as ordered by ICEFISH.
     1440(I) HMS. SELENE surfaced at a distance of 5000 yards. Exchanged
             recognition and gave him position.

16 June 1945

     1200(I) Shifted patrol station to line between PENNAN CHANNEL and
             PULO WAI.
     1610(I) Sighted and obtained fix on PULO WAI.
     1728(I) Submerged.
     1906(I) Surfaced.
     2146(I) Set course for PENNAN CHANNEL.
     2353(I) Exchanged recognition with USS ICEFISH.

17 June 1945

     0040(I) Established communications by VHF with USS ICEFISH.
     0327(I) APR contact identified as H.M.S. SELENE.
     0442(I) Made radar contact with KOH PENNAN.
     0729(I) Submerged. Patrolling off PENNAN CHANNEL.
     2110(I) Surfaced. Patrolling on surface off PENNAN CHANNEL.

18 June 1945

     0728(I) Submerged.
     2112(I) Surfaced.

19 June 1945

     0908(I) Submerged.
     2115(I) Surfaced.

20 June 1945

     0722(I) Submerged.
     2122(I) Surfaced.

                                  - 7 -

— page 43 —
CONFIDENTIAL
(B) NARRATIVE (Cont'd).

21 June 1945

0123 (I) Received ICEFISH message releasing us for independent patrol.
Set course for PULO WAI.
1020 (I) Sighted and obtained fix on PULO WAI. Commenced patrolling
approaches to KAMPONG SOM BAY.
2130 (I) Closed and made radar and visual search of KAW PRINS.
2245 (I) Made radar and visual search of KAW TANG.

22 June 1945

0100 (I) Made radar and visual search of PULO WAI.
0200 (I) Commenced patrolling to west of PULO WAI.
0723 (I) Submerged.
2030 (I) Surfaced. Continued surface patrol west of PULO WAI.

23 June 1945

0725 (I) Submerged.
2036 (I) Surfaced.

24 June 1945

0730 (I) Submerged.
1515 (I) Surfaced. Set course for PULO PANJANG.
1851 (I) Arrived PULO PANJANG and inspected anchorage without result.
The island is apparently uninhabited.
1905 (I) Set course for SUBIC BAY.
2308 (I) Received request from CHARR for rendezvous and changed course
accordingly.

25 June 1945

0110 (I) Exchanged recognition with U.S.S. CHARR.
0158 (I) Rubber boat from CHARR came alongside bring patient for
transfer to hospital DALIER, KARL ANTHONY, 274 97 93,TME3c,
V6 USNR.
0230 (I) Set course for SUBIC BAY.

26 June 1945

1655 (I) Sighted small ship bearing 040° T. Turned away to open range
and close track.
1713 (I) Tentatively identified as BRITISH or DUTCH submarine,
possibly H.M.S. SEA SCOUT. Unable to raise SEA SCOUT on wolf
pack frequency. Turned toward but were unable to locate him.
Assumed that he had dived so at
1738 (I) Submerged to await developments.
2047 (I) Surfaced and immediately picked up SJ interference to the
westward which was identified as friendly.
2105 (I) Resumed course for SUBIC BAY

– 8 –

— page 44 —
CONFIDENTIAL

(B) NARRATIVE (Cont'd).

27 June 1945

    0945(I) SD contact at 25 miles unable to get IFF or VHF identification.
    0950(I) Contact lost at 32 miles.
    1115(I) Sighted plane at close range headed for us. Submerged to 100 ft.
    1523(I) Surfaced.

28 June 1945

    0430(I) Entered joint zone.
    0815(I) SD plane contact 11 miles. Identified as friendly by IFF.
    1650(I) SD plane contacts 29 and 42 miles both with IFF response.

29 June 1945

    0357(I) Picked up target on radar bearing 040° T. range 12,400 yds.
    0401(I) Exchanged calls with U.S.S. WAITON (DE361) our escort.
    0930(I) Moored alongside U.S.S. GILMORE, completed second war patrol.

(C) WEATHER.

    No unusual weather conditions were encountered.

(D) TIDAL INFORMATION.

    Currents were as predicted by H.O. Publications.

(E) NAVIGATIONAL AIDS.

    At 2100(I) on 26 May 1945, collided with a submerged object at
    04° - 55' - 15" South; 115° - 54' - 10" East.

    CTG 71 despatch 020132 of June ordered us to ATAS ISLAND. This
    nomenclature is found only on H.O. Chart No. 797, which was canceled by
    the FREMANTLE chart pool.

(F) SHIP CONTACTS.

| No. | Time-Date | Lat.Long. | Type | Initial Range | Course Speed | How Contacted |
|:----|:|:|:-----|:|:|:|
| 1 : | 0035(I) | 5-10(S) | : DE | 13,000 yds.: | 110° T. | R |
|     | :27 May 1945 | :115-13(E) | : |               | :17 knots |               |
| 2 : | 2018(I) | : 6-14(S) | : Escort | : 12,000 yds.: | 090° T. | R |
|     |           |           | :(600 tons |               | :10 knots |               |

- 9 -

— page 45 —
CONFIDENTIAL

(G) AIRCRAFT CONTACTS.

: Time | :Lat. | : | : Initial | :Est.Course | How | :
No.: Date | :Long. | :Type(s) | : Range | : Speed | Contacted | :Remarks
: | : | : | : | : | : | :
1 : 0952(I) : 01-25N | : Unident. | : 24 Miles | : Unknown | : R | :Possibly
: 31 May : 105-07E | : | : | : | : | :friendly

2 : 0900(I) : 01-42N | :2 Unident | : 25 Miles | : Unknown | : R | :Possibly
: 1 June : 105-09E | : | : | : | : | :friendly

3 : 0929(I) : 01-34N | : 1 Unident.: 20 Miles | : Unknown | : R | :Possibly
:2 June : 105-33E | : | : | : | : | :friendly

4 : 1052(I) : 08-05N | : 1 Unident.: 20 Miles | : Unknown | : R | :
:10 June : 103-12E | : | : | : | : | :

5 : 1125(I) : 08-10N | : 1 Unident.: 8½ Miles | : Unknown | : R | :
:10 June : 103-09E | : | : | : | : | :

6 : 0945(I) : 10-32N | : 1 Unident.: 25 Miles | : Unknown | : R | :
:27 June : 111-26E | : | : | : | : | :

7 : 1313(I) : 11-06N | :Flying boat: 6 Miles | : 200° | : SD | :
:27 June : 111-56E | : | : | : | : | :

(H) ATTACK DATA (GUN ATTACK REPORT FORM)

U.S.S. LAMPREY Gun Attack No. 1 Patrol No. 2
Time 2142(I) 28 May 1945 Lat. 6-14(S) Long. 110-41(E).
TARGET DATA

Sunk - None
Damaged - Escort vessel (600 tons)

Damage determined by two observed hits and a fire on the target when
action was broken off.

DETAILS OF ACTION

Forty (40) rounds of 5 inch 25 cal. ammunition were expended on this
target with two certain hits. Average range was 5,000 yds. Radar spott-
ing was used very efficiently with the pointer keeping on the horizon.
Low percentage of hits was caused by inability of trainer to get on the
target. It is recommended that a system of transmitting bearings from
TBT or radar to the gun be installed.

- 10 -

— page 46 —
CONFIDENTIAL

(H) ATTACK DATA (Torpedo Attack Report Form)

U.S.S. LAMPREY Torpedo Attack No. 1 Patrol No. 2
Time - 0511(I) Date - May 27 Lat. 05-17.2 S. Long. 115-57.9 E.

Target Data - Damage Inflicted

Description:
Target was single DE, contact was made by SJ radar at
13,000 yds. Visibility was very good with full moon.

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

Target Draft - 6 feet Course - 140° Speed - 15 Range - 3780 yds.
                                                              (at firing)

Own Ship Data

Speed - 2.0 knots Course - 240° Depth - 62 feet Angle - 0 (at firing)

Fire Control and Torpedo Data

Type Attack:

End around run on surface was made with poor results
because of small speed advantage. Dove with range at 8000
yards and made approach using periscope bearings and ST
radar ranges.

- 11 -

— page 47 —
CONFIDENTIAL

(H) ATTACK DATA (Cont'd).

| | No. 1 | No. 2 | No. 3 |
|---|---|---|---|
| Tubes fired | 8 | 9 | 10 |
| Track Angle | 98°20' S | 100°S | 100°10' |
| Gyro Angle | 178°40' | 180 | 180°10' |
| Depth Set | 3 ft. | 3 ft. | 3 ft. |
| Power | High | High | High |
| Hit or Miss | Miss | Miss | Miss |
| Erratic | No | No | No |
| Mark Torpedo | Mk.14-3A | Mk.14-3A | Mk.14-3A |
| Serial No. | 66914 | 67058 | 67223 |
| Mark Exploder | 6-5 | 6-5 | 6-5 |
| Serial No. | 32582 | 25493 | 20796 |
| Actuation Set | Contact | Contact | Contact |
| Actuation Actual | --- | --- | --- |
| Mark Warhead | Mk.16-4 | Mk.16-4 | Mk.16-4 |
| Serial No. | --- | --- | --- |
| Explosive | Torpex | Torpex | Torpex |
| Firing Interval | 10 sec. | 10 sec. | 10 sec. |
| Type Spread | Divergent | Divergent | Divergent |
| Sea Conditions | 1 | 1 | 1 |
| Overhaul Activity | CLYTIE | CLYTIE | CLYTIE |

- 12 -

— page 48 —
CONFIDENTIAL
(I) MINES.
No minelaying operations observed.

(J) ANTI-SUBMARINE MEASURES AND EVASION TACTICS.
None observed.

(K) MAJOR DEFECTS AND DAMAGE.

1. It is believed that a bearing receiver should be installed on
the 5" gun, allowing bearings to be transmitted from the TBT or the radar
to the gun. The gun attack made on the night of 28 May would have been
more successful had we had such a system.

2. The pressure proof binoculars installed on the TBTs have fogged
up immediately after leaving port each time. They are definitely unsatis-
factory.

3. Copper gasket under the third stage valve in the starboard high
pressure compressor broke and dropped into the cylinder. It was necessary
to pull the whole unit to remove all the pieces.

4. On 27 May all forward tubes were flooded for thirty minutes.
Twelve hours later a teacup of salt water was found in Mk. 18 torpedo
#58042. The connector between battery sections was removed and all cir-
cuits tested for grounds. No grounds were found. The gyro was inspected
and found to be normal. Leak meter test was given and torpedo replaced in
tube. On 2 June this torpedo was removed for weekly routine and battery
charge. Conditions were apparently normal with specific gravity down 18
points. Five minutes after commencing charge the odor of burning insula-
tion was noticed and charge was secured. A 150 volt ground was detected
in the afterbody. Inspection revealed one burnt out field coil and one
of the cylindrical supports and stationary contact plates of motor start-
ing switch burnt out. In inspecting the motor the tape was removed from
the positive brush ring revealing a two inch section of the ring complete-
ly corroded away. It is not believed possible that a teacup of salt water
could do this damage in twelve hours.

5. In general Mk. 18 torpedoes were in poor condition. Rags were
found in two battery compartments and a three inch open ended wrench in
another. Terminal blocks had loose connections due to missing securing
nuts causing shorts on two occasions. Vertical and horizontal rudders
were in poor condition due to improper clearance and misalignment. Tor-
pedo record books were incomplete.
As a result of above defects all Mk. 18 torpedoes were given
a complete chock.
It is considered that torpedoes in this condition are as much
of a menace to the submarine as to the target. With targets as scarce as
they are we can ill afford to miss due to defective workmanship.

- 13 -

— page 49 —
CONFIDENTIAL
(L) RADAR.

Few difficulties were encountered this patrol in radio reception,
with no major materiel troubles and no serials missed on the NPT1 Fox
Schedule while in the patrol area. NPT1 could not be heard at all for the
first day and a half out of PERTH.

No planes were contacted on life guard frequencies, but one mess-
age from a plane was receipted for and several were copied blind on wolf
pack frequencies. None were of concern to the LAMPREY.

Communications on wolf pack frequencies were good, with much JAP
traffic on overlapping frequencies but no deliberate jamming. As usual,
many extra minutes of transmission were made necessary by repeated preli-
minary call-ups, even when one of two boats called would answer up and argu-
ments over authentication. These can be eliminated only when a wolfpack
has the opportunity to work out a communications discipline during training
period or enroute to the area.

In accordance with CTF 71 instructions, the following log of con-
ditions in the area is submitted.

Position | Time GCT | Date | Xmitting station | Frequency | Signal Strength
12-15 S. | 0001 | 25 May | NPT1 | 12630 kc | S4
115-34 E. | | | | |
11-05 S. | 0600 | 25 May | NPT1 | 12630 kc | S4
115-40 E. | | | | |
9-40 S. | 1200 | 25 May | NPT1 | 9250 kc | S3
115-41 E. | | | | |
8-14 S. | 1800 | 25 May | NPT1 | 9250 kc | S3
115-55 E. | | | | |
7-52 S. | 0001 | 26 May | NPT1 | 9250 kc | S3
117-33 E. | | | | |
5-24 S. | 0600 | 26 May | NPT1 | 9250 kc | S2 to S3
116-45 E. | | | | |
5-55 S. | 1800 | 26 May | NPT1 | 9250 kc | S4 to S5
116-22 E. | | | | |
5-42 S. | 1200 | 27 May | NPT1 | 9250 | S5
114-35 E. | | | | |
06-03 S. | 0001 | 28 May | NPT1 | 12630 | S2 to S3
112-56 E. | | | | |
05-40 S. | 0600 | 28 May | NPT1 | 12630 | S2 to S3
111-00 E. | | | | |

- 14 -

— page 50 —
CONFIDENTIAL

Position | Time GCT | Date | Xmitting station | Frequency | Signal Strength
---|---|---|---|---|---
06-03 S. | 1200 | 28 May | NPT1 | 9250 kc | S2
110-02 E. | | | | |
06-00 S. | 1800 | 28 May | NPT1 | 9250 kc | S2 fading
110-00 E. | | | | |
04-36 S. | 0001 | 29 May | NPT1 | 9250 kc | S2
109-38 E. | | | | |
03-24 S. | 0600 | 29 May | NPT1 | 12630 | S5
109-19 E. | | | | |
02-01 S. | 1200 | 29 May | NPT1 | 9250 kc | S5
108-48 E. | | | | |
01-09 S. | 1800 | 29 May | NPT1 | 9250 kc | S5
107-42 E. | | | | |

In the SIAM GULF, from June 10 to June 24, NPT1 was logged S5 at
the following times: 0400, 0700, 1200, 1800, 2000 GCT.

(M) RADAR.

As the result of an poor refit by the USS CLYTIE and the added
burden of the ST radar, the SJ required almost daily overhaul on this patrol.
The SD-5 gave its usual excellent results, with no material difficulties
and ranges from 8 miles on up. No troubles were encountered with the IFF
or SPR-SPA equipment.

The ST radar, after satisfactory performance on one approach at
the start of the patrol, lost sensitivity and showed erratic crystal
current. Repeated tuning brought it back only to 75% efficiency. An
echo box with the reliability of the OBU is badly needed; the transmitter
tuning is not stable and it is usually impossible to use land echoes be-
cause of the need for the SJ.

The use of the ST on an approach is hindered by the time necess-
ary to adjust receiver tuning. This tuning drifts badly, particularly
immediately after switching from the SJ to the ST; the dummy antenna and
echo box proved so far off peak tuning that they were useless.

The greatest source of trouble for the SJ, the continued failure
of 6Y6 tubes in the regulated rectifiers, was apparently caused by the
added current drain imposed by the ST. As the equipment stands, the 300
volt output from the regulated rectifiers is applied continuously both to
the ST and the SJ, regardless of which is being operated. There is, how-
ever, no need for the ST to be warmed up until contact is made,
since the target will always be tracked on the surface before an ST attack
is made. A switch should be provided so that, when the SJ is being used,
the ST may be placed either in the standby position or secured completely.

- 15 -

— page 51 —
CONFIDENTIAL

(M) RADAR (Cont'd).

The performance of the SJ-1 was consistently below that realized
on the LAMPREY's first patrol. A good part of this reduced effective-
ness appeared due to the installation of the ST in the refit period. Most of
the failures experienced were in units common to both equipments, and with
which little trouble had previously been encountered.

Typical initial contacts during normal search were as follows:

Land 10,000 ft. elevation 185,000 yards (second sweep)
Land 2500 ft. 60,000 - 70,000 yards
Land 300 ft. 35,000 yards
USS ICEFISH 10,000 yards
JAP 600-tonner 12,000 yards
JAP 1000-tonner 13,000 yards

SJ-1 failures and repairs were as follows:

1. Fuses 5 and 6 and 9 and 10 in main control unit blew. Found
and replaced shorted 5R4G in Regulated Rectifier "A". Tested all tubes
in both regulated rectifiers and found all 8 6Y6G tubes with less than
50% of rated transconductance.

2. Fuses 9 and 10 in main control unit blew when keying was attempted.
Replaced 836 tubes in high voltage rectifier and equipment keyed normally.
These tubes were selected by trial and error; all tubes worked during nor-
mal operation but only certain ones would permit keying without blowing
fuses.

3. Focus and brightness on "A" scope could not be controlled by
front panel adjustments. Replaced V-5, V-8, and V-10 in range indicator.
Pattern clearer but still not perfect. Replaced C.R.T. and realized nor-
mal operation.

4. Replaced inoperative main switch in control unit with 125V, 10
amp. switch from electrician's spares.

5. Sensitivity very low. Replaced magnetron, T.R., tube, crystal,
and McNally oscillator tube. Retuned r.f. section. Sensitivity increased
but still not normal.

6. Fuses 7 and 8 in main control unit blew. Found one 5R4G inter-
nally shorted, other 5R4G in Rectifier "B" with open filaments.

7. Sensitivity low. Replaced two 717-A amplifier tubes in SJ trans-
mitter-receiver unit and two 6AK5 tubes in selector unit. Sensitivity im-
proved but still not normal.

8. PPI intensity could not be controlled from front panel. Unit
would operate normally for a few hours; then the sweep would brighten
enough to burn the coating on the C.R.T. Replaced C.R.T. and obtained
normal operation.

– 16 –

— page 52 —
CONFIDENTIAL

(M) RADAR (Cont'd).

9. Height of grass on "A" scope increased to twice normal height
on latter part of main sweep. Loose I.F. cable leading from beat oscilla-
tor to A.F.C. unit was secured and grass returned to normal height.

10. Tested tubes in regulated rectifiers and found three 6Y6G tubes
with very low transconductance. Replaced with 6L6GT tubes (no more 6Y6's
in spares) and equipment operated normally. 6L6's proved far more satis-
factory than the 6Y6's, which evidently could not stand the current drain
imposed by both SJ and ST units.

11. Sensitivity very low. Found that two stages of amplification
in selector unit resulted in attenuation. Replaced I.F. gain potentio-
meter in range indicator and sensitivity increased markedly. However, there
is still attenuation through the amplifiers in the selector unit.

12. Transmitter double pulsing and false echo at 7000 yards. Re-
placed 6X5 and 5D21 tubes without improving condition. Found output of "A"
rectifier could not be varied from 290V setting; 450V output read 360V.
5R4G tube shorted.

13. Fuses 9 and 10 in main control unit blew. Again, replaced 835
tube in H.V. rectifier and realized normal operation.

14. 479 hours of operation found the PPI scope out of commission
18 hours, while the "A" scope was out of service for 3 hours. Much of the
time, however, the SJ was operating far below peak performance.

(N) SOUND GEAR AND SOUND CONDITIONS.

Both QB and JP were used for search this patrol; no materiel
trouble was encountered with either.

Sound conditions in the JAVA SEA area were fair, with QB ranges
of 6000-7000 yards and a JP maximum range of 13,000 yards (checked by ST
radar) on the LAMPREY's one contact. JAP pinging was heard on 18 kc, and
on another occasion, over the horizon, on 17 kc.

No contacts were made while operating in the SIAM GULF AREA.

- 17 -

— page 54 —
CONFIDENTIAL

RADIO COMMUNICATIONS - JAMMING BY THE ENEMY

1. Ship or Station U.S.S. LAMPREY (SS372)

2. Position, bearing and altitude when enemy radio signals were observed -
   28-45.4 S. 112-47.9 E.

3. Position of Transmitting Station - Unknown.

4. Date of jamming - 22 May 1945 Time: From 1203 to 1300 GCT.

5. Frequencies jammed - 9250 kc.

6. Describe signal jammed - CW signal, long dashes. Later, both CW and
   MCW.

7. Use of circuit (tactical, administrative) - tactical - NPT1 submarine
   fox.

8. Was enemy jamming signal stable - Yes.

9. What was ratio of strength of own signal to enemy jamming signal -
   Blocked own signal.

10. What was power output of own transmitter at time of jamming -

11. Location of enemy jammer:
    Shipborne ____ Airborne ____ Landbased ____ Unknown _X_ .

12. Type of jamming signals:
    Bagpipe (Musical tone) ____ Sweep-through (FM) ____
    Saw (Variable tone) ____ Wobbulatod tone ____
    CW-Random Keying _X_ Noise Modulation _X_
    Voice ____ MCW ____

13. Effectiveness of jamming - 100%.

14. Action taken to overcome jamming - Tried unsuccessfully to copy
    through jamming using filters. Shifted frequencies, but NPT1 Fox
    heard only over 9250 at this time.

15. Bandwidth covered by enemy jamming signals -

16. Did jamming transmitter appear to be monitored by a look-in receiver -
    No

17. If frequency was shifted, how long before enemy jammed new frequency -

- 19 -

— page 55 —
CONFIDENTIAL
RADIO COMMUNICATIONS - JAMMING BY THE ENEMY

1. Ship or Station - U.S.S. LAMPREY (SS372).
2. Position, bearing and altitude when enemy radio signals were observed -
   00-59 N. 107-09 E.
3. Position of Transmitting Station - Unknown.
4. Date of jamming - 6 June 1945 Time: From 1815 to 2000 GCT.
5. Frequencies jammed - 9250 kc.
6. Describe signal jammed - CW signal.
7. Use of circuit (tactical, administrative) - tactical - NPT 1 sub-
   marine fox.
8. Was enemy jamming signal stable - Yes.
9. What was ratio of strength of own signal to enemy jamming signal -
   Same, blocked own signal (both S5).
10. What was power output of own transmitter at time of jamming -
11. Location of enemy jammer:
    Shipborne ____ Airborne ____ Landbased ____ Unknown __X__
12. Type of jamming signals:
    Bagpipe (Musical tone) ____
    Saw (variable tone) ____
    CW-Random keying ____
    Voice ____
    Sweep - through (FM) ____
    Wobbulatod tone ____
    Noise modulation ____
    MCW ____
13. Effectiveness of jamming - 100%.
14. Action taken to overcome jamming:
    Shifted frequencies, but could not hear NPT1 on any other frequency.
15. Bandwidth covered by enemy jamming signals -
16. Did jamming transmitter appear to be monitored by a look-in receiver -
    No
17. If frequency was shifted, how long before enemy jammed new frequency -

- 20 -

— page 56 —
CONFIDENTIAL

RADIO COMMUNICATIONS - JAMMING BY THE ENEMY

1. Ship or Station - U.S.S. LAMPREY (SS372).
2. Position when enemy radio signals were observed - 09-53 N. 102-39 E.
3. Position of Transmitting Station - Unknown.
4. Date of jamming - 21 June 1945 Time: From 1745 to 1845 GCT.
5. Frequencies jammed - 9250 kc.
6. Describe signal jammed - CW signal.
7. Use of circuit (tactical, administrative) - tactical - NPT1 sub-
   marine fox.
8. Was enemy jamming signal stable - Yes.
9. What was ratio of strength of own signal to enemy jamming signal -
   Same; blocked own signal (both S5).
10. What was power output of own transmitter at time of jamming -

11. Location of enemy jammer:
    Shipborne ____ Airborne ____ Landbased ____ Unknown _X_.

12. Type of jamming signals:
    Bagpipe (Musical tone) ____
    Saw (Variable tone) ____
    CW-Random keying _X_
    Voice ____
    Sweep-through (FM) ____
    Wobbulatod tone ____
    Noise modulation ____
    MCW ____

13. Effectiveness of jamming - 100%.

14. Action taken to overcome jamming:
    Tuned unsuccessfully using audio filters. JAP was zero-beat with
    NPT1. NPT1 could be heard on no other frequency.

15. Bandwidth covered by enemy jamming signals -

16. Did jamming transmitter appear to be monitored by a look-in receiver -
    Yes. Frequency was jammed only when traffic was being transmitted by
    NPT1.

17. If frequency was shifted, how long before enemy jammed new frequency -

- 21 -

— page 57 —
CONFIDENTIAL
(U) RADIO AND RADAR COUNTERMEASURES AND INTERCEPTION OF ENEMY RADAR TRANS-
MISSIONS.

1. Ship or Station - U.S.S. LAMPREY (SS372).
2. Area covered on this mission: LOMBOK STRAIT (9-29 S. 115-40 E.),
   25 May 1945.
3. Was enemy radar:
   Shipborne ______ Airborne ______ Landbased X Unknown ______
4. Intercept equipment: SPR-SPA (TN-2).
5. (a) Frequency - 195 mc.
   (b) PRF - 1000 How measured - P.R.F. Meter.
   (c) Pulse Width - 5 How measured - SPR-SPA calibration.
6. (a) Was radar used for surface or air search, GL, SIC, GCI, or AI -
   Air search.
   (b) Evidence for this conclusion - radar was sweeping slowly; data
   checked with previous intercepts of Mark 1 Mod. 2 on BALI.
7. Action of enemy radar:
   Sweeping slowly; at no time did he appear to have contact with us.

- 22 -

— page 58 —
CONFIDENTIAL

(U) RADIO AND RADAR COUNTERMEASURES AND INTERCEPTION OF ENEMY RADAR TRANS-
MISSIONS (Cont'd).

1. Ship or Station - U.S.S. LAMPREY (SS372).
2. Area covered on this mission:
LOMBOK STRAIT (8-12 S. 115-55 E.), 26 May 1945.
3. Was enemy radar:
Shipborne ____ Airborne ____ Landbased X Unknown ____.
4. Intercept equipment:
SPR- SPA (RN-2).
5. (a) Frequency - 160 mc
(b) PRF - 500 How measured - P.R.F. Meter.
(c) Pulse width - 5 How measured SPR-SPA calibration.
6. (a) Was radar used for surface or air search, GL, SLC, GCI, or AI -
Air search.
(b) Evidence for this conclusion - radar was sweeping slowly; data
checked with previous intercepts of Mark 1 Mod. 3 on BALI.
7. Action of enemy radar:
Sweeping slowly; at no time did he appear to have contact with us.

- 23 -

— page 59 —
CONFIDENTIAL
(V) REMARKS.
(a) No observations on enemy minesweeping oper ations.
(b) No observation of enemy traffic routes or focal point except
negative observations in areas covered by this patrol.
(c) The requirements of COMMANDER SUBMARINES, SEVENTH FLEET Con-
fidential Letter, Serial 0243 of 2 February 1945, have been
complied with.

- 24 -

— page 60 —
FB5-221/A16-3 SUBMARINE DIVISION TWO HUNDRED TWENTY ONE
Serial: (02) Care of Fleet Post Office
San Francisco, California
C-O-N-F-I-D-E-N-T-I-A-L
1 July 1945

FIRST ENDORSEMENT to
CO, USS LAMPREY Report
of Second War Patrol
SS372/A16, Serial 021
of 29 June 1945.

From: Commander Submarine Division TWO HUNDRED TWENTY-ONE.
To : Commander-in-Chief, United States Fleet.
Via : (1) Commander Submarine Squadron TWENTY-TWO.
(2) Commander Submarines, SEVENTH FLEET.
(3) Commander, SEVENTH FLEET.

Subject: U.S.S. LAMPREY (SS372), Report of War Patrol Number Two.

1. The U.S.S. LAMPREY (SS372) departed FREMANTLE, W. A. on 21 May
1945 for her second war patrol with a new commanding officer, Lieutenant Com-
mander L. B. McDONALD, U. S. Navy.

2. On 26 May LAMPREY entered JAVA SEA enroute to assigned area in
the SIAM GULF. While in transit every opportunity was taken to reconnoiter
possible anchorages and flush out targets. Early on the morning of 27 May,
radar contact was established on a seventeen knot target probably a DE or PF.
Although one engine was out of commission, a determined end around was ex-
ecuted which placed LAMPREY in an excellent position for a submerged radar
approach. Several factors influenced the commanding officer to commit himself
to a stern tube attack:

(a) Possibility of having to fire a long range shot required
the use of Mark 14-3A torpedoes loaded aft.
(b) The poor condition of the Mark 18 torpedoes loaded for-
ward caused considerable doubt that they would function
properly.
(c) It was thought LAMPREY had been detected as immediately
as she dived, target turned toward, slowed and started
pinging as if starting an attack.

It was disappointing then, when the target became coy. LAMPREY accepted the
only opportunity to attack, firing three Mark 14-3A torpedoes set on three
feet on a 100 starboard track with 180 gyros. The target avoided with ease
and cleared the area.

— page 61 —
FB5-221/A16-3 SUBMARINE DIVISION TWO HUNDRED TWENTY-ONE
Serial: (02)
Care of Fleet Post Office
San Francisco, California
C-O-N-F-I-D-E-N-T-I-A-L 1 July 1945

Subject: U.S.S. LAMPREY (SS372), Report of War Patrol Number Two.

— page 62 —
FC5-22/A16-3
Serial 0145
CONFIDENTIAL

SUBMARINE SQUADRON TWENTY-TWO

00/Bn
Care of Fleet Post Office,
San Francisco, California.
2 July 1945.

SECOND ENDORSEMENT to
U.S.S. LAMPREY (SS372) -
Report of Second War Patrol.

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

Subject: U.S.S. LAMPREY (SS372) - Report of Second War Patrol.

1. Forwarded, concurring in the remarks of the Commander Submarine
Division Two Hundred Twenty-one.

2. The second war patrol of the U.S.S. LAMPREY (SS372) was of
forty (40) days duration. Five (5) days were spent enroute from Fremantle, W.A.,
to area and three (3) days from area to SUDIC BAY, leaving a total of thirty-two
(32) days in assigned areas.

3. The administrative Squadron Commander congratulates the Commanding
Officer, officers and crew on the completion of this patrol and on the damage
to an enemy patrol boat by gunfire.

[SIGNATURE: E. S. HUTCHINSON.]

[STAMP: 8 01093]

— page 63 —
FE24-71/A16-3
Serial 0215-A

UNITED STATES NAVY

12/hr
8 01093
9 July 1945.

C-O-N-F-I-D-E-N-T-I-A-L
THIRD ENDORSEMENT to:
USS LAMPREY (SS372) Conf.
Ltr. A16 Serial 021 dated
29 June 1945. Report of
Second War Patrol.

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

Subject: U.S.S. LAMPREY (SS372) - Report of Second War
Patrol - Comment on.

1. The Second War Patrol of the LAMPREY and the first
for the Commanding Officer, Lt. Comdr. L. B. McDONALD, U.S.N., was
conducted in the JAVA SEA and GULF of SIAM.

2. The remarks of the Division and Squadron Commanders
fully cover this well conducted patrol during which there was so
little to shoot at.

3. The award of the Submarine Combat Insignia is not
authorized for this patrol.

4. The Force Commander congratulates the LAMPREY for
inflicting the following damage on the enemy:

DAMAGED BY GUNFIRE

1 Escort 600 Tons.

[SIGNATURE: JAMES FIFE]
JAMES FIFE
ORIGINAL COPY

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

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

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

— page 64 —
UNITED STATES FLEET
COMMANDER SEVENTH FLEET
[STAMP: REC'D]
[STAMP: R.S. NO. F-1018]
[STAMP: REG. SHEET NO. 8 01093]
[STAMP: 28 JUL 1945]

A16-3(8)(F-3c/cgj)
Serial: 050-41

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

FOURTH ENDORSEMENT to:
CO USS LAMPREY (SS372)
conf ltr A16, serial
021, dated 29 June 1945.

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

Subject: U.S.S. LAMPREY (SS372) - Report of Second
War Patrol - comment on.

1. Forwarded.

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

Copy to:
ComSubs7th
CO USS LAMPREY (SS372)

— page 65 —
[HANDWRITTEN: 1st Copy]

SS372/A16/A9
Serial 026
[STAMP: DECLASSIFIED]
[UNCLEAR: S-1-A-L]

U.S.S. LAMPREY (SS372)
c/o Fleet Post Office,
San Francisco, California,
20 August 1945.

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

Subject: U.S.S. LAMPREY (SS372), Report of War Patrol Number THREE.

Enclosure: (A) Report of Third War Patrol.
(B) Track Charts.
(C) Registry Papers of "SE BINSANG TIMOER".

1. Enclosures (A) through (C), covering the third war patrol of
this vessel conducted in the GULF OF SIAM and in the JAVA SEA during the per-
iod of 26 July 1945 to 20 August 1945, are forwarded herewith.

[SIGNATURE: L. B. McDonald]
L. B. McDONAID.

DECLASSIFIED ART. 0445, OPNAVINST 5510.1C
BY [HANDWRITTEN: OP-09B4C] DATE [HANDWRITTEN: 5/21/72]

[STAMP: DECLASSIFIED]

[HANDWRITTEN: 141959]

11 0104

— page 66 —
CONFIDENTIAL
(A) PROLOGUE.

Arrived SUBIC BAY, P.I., from second war patrol on 29 June 1945.
Refit commenced on 30 June 1945 by SUBDIV 221 Relief Crew and USS HOWARD W.
GILMORE (AS16). Loran and TDM equipment installed during refit. Refit com-
pleted 14 July 1945.

Conducted training exercises in SUBIC BAY area from 16 July to 23
July. Ready for sea and departed SUBIC BAY on 26 July 1945.

(B) NARRATIVE.

OFFICERS ATTACHED                               NO. PREVIOUS PATROLS

Lieut-Comdr. L. B. McDONALD, U.S.N.                               7
Lieutenant W. T. ROSSELL, Jr., U.S.N.R.                           8
Lieutenant W. J. GODFREY, Jr., U.S.N.R.                           7
Lieutenant M. W. BATTERMAN, U.S.N.R.                              7
Lieut (jg) C. G. BIESECKER, U.S.N.R.                              2
Lieut (jg) J. D. AIDEN, U.S.N.R.                                  2
Ensign L. C. MORRIS, U.S.N.                                       8
Ensign J. F. Mc DERMOTT, U.S.N.R.                                 0
Ensign G. P. WILLIAMS, Jr., U.S.N.R.                              1

C.P.O.s ATTACHED                                 NO. PREVIOUS PATROLS

AKERS, R.H., CEM(PA)(SS), U.S.N.                                 10
JACKSON, W.E., CY(T)(AA)(SS), U.S.N.                              2
ROBBINS, G.B., CQM(T)(SS), U.S.N.                                 9
TOMLINSON, J.L., CT(PA)(SS), U.S.N.                               8
WARD, L.A., CEM(T)(AA)(SS), U.S.N.                               10
WARNER, W.D., CMOMM(AA)(SS), U.S.N.                               6
WOFFORD, J.T., CRM(PA)(SS), U.S.N.                               11

26 July 1945

1355 (I) Underway from alongside USS HOWARD W. GILMORE in accordance with
         CTF 71 Operation Order.
1552 (I) Commenced sound training exercises with DE359.
1729 (I) Completed sound exercises.
2105 (I) Released escort.

27 July 1945

0202 (I) Exchanged recognition with USS BECUNA.
0826 (I) Picked up plane on SD at 28 miles.
0835 (I) Sighted Liberator on northwesterly course.
1255 (I) Exercised machine gun crews. Fired at floating tree.
2000 (I) Entered Submarine Patrol Area and set course for SIAM GULF.

ENCLOSURE (A)
- 1 -

— page 67 —
CONFIDENTIAL

28 July 1945
0258 (I) Friendly SJ interference to eastward. Unable to exchange re-
cognition. Believed to be USS HAMMERHEAD.
1310 (I) Made contact with plane at 32 miles. Unable to identify
but probably friendly.
1453 (I) Another unidentified plane contact at 30 miles.

29 July 1945
1442 (I) Friendly plane contact on SD at 25 miles.
1748 (I) Sighted floating mine. Exploded it with 40mm. gunfire.

30 July 1945
0800 (I) Entered SIAM GULF AREA.
0900 (I) Unidentified plane contact on SD at 30 miles. Contact closed
to 8 miles so at
0904 (I) Submerged.
0949 (I) Surfaced and continued on course for center of area.
1047 (I) Unidentified plane on SD at 39 miles.
1400 (I) Unidentified plane on SD at 12 miles. Closed to 9 miles so at
1401 (I) Submerged.
1508 (I) Surfaced.

31 July 1945
0156 (I) Commenced surface patrol on track between RIEM BAY and PENNAN
CHANNEL.
1459 (I) Received despatch telling of B-24 survivors in vicinity of 8-30
N., 102-36 E. Set course for this point.
2312 (I) Exchanged recognition with USS BUGARA.
2346 (I) Arrived at position given for survivors and commenced searching.

1 August 1945
0515 (I) Exchanged recognition with USS COBIA.
0700 (I) Formed scouting line with USS BUGARA and USS COBIA and commenced
search of area.
1542 (I) Unidentified plane on SD at 38 miles.
1601 (I) Lost plane contact.
1645 (I) Received CTF 71 despatch ordering search discontinued.
1715 (I) SD contact on unidentified plane at 15 miles.
1717 (I) Submerged range now 9 miles.
1838 (I) Surfaced and set course for PULO PANJANG. BUGARA has assigned
us the east side of the SIAM GULF.
1957 (I) Sighted PULO PANJANG.
2141 (I) Commenced surface patrol to west of PULO PANJANG.

2 August 1945
0623 (I) Plane contact at 8 miles. Made quick dive.
0706 (I) Surfaced.
0723 (I) Submerged for patrol off PULO PANJANG.
2112 (I) Surfaced. Set course for ANTHOI ISLANDS.

- 2 -
ENCLOSURE (A)

— page 68 —
CONFIDENTIAL
3 August 1945

0127(I) Commenced surface reconnaissance of ANTHOT ISLANDS, FUNKWOK
          ISLAND and RIEM BAY at a distance of 10,000 yards.
0423(I) Completed reconnaissance without results and set course for
          PULO WAI.
0921(I) Commenced surface patrol off PULO WAI.
2115(I) Set course to close coast.

4 August 1945

0332(I) Commenced surface patrol off KAW SAMIT.
0708(I) Submerged off KAW SAMIT.
2122(I) Surfaced, patrolling off KAW SAMIT.

5 August 1945

0712(I) Submerged off KAW SAMIT.
2111(I) Surfaced. Set course to open out from coast as this spot
          seems to be completely dead.
2245(I) Received CTF 71 despatch ordering us to leave SIAM GULF and
          relieve BUMPER in SINGAPORE AREA. Set course to comply with
          orders.

6 August 1945

1034(I) Unidentified plane on SD radar at 40 miles.
1036(I) Contact faded out.
1411(I) Unidentified plane on SD radar at 35 miles.
1414(I) Pip faded out.
1643(I) Unidentified plane on SD radar at 28 miles.
1649(I) Pip faded out.
2310(I) Exchanged recognition with USS BOARFISH.

7 August 1945

1205(I) Friendly plane on SD at 24 miles. Established VHF communication
          with him. No dope for us.
1710(I) Unidentified plane on SD at 27 miles.
1715(I) Pip faded out.
2030(I) Made radar contact with DAMAR ISLAND.
2304(I) Picked up enemy radar on APR. He was sweeping and did not
          steady on us. Probably located in ANAMBAS ISLANDS.

8 August 1945

0112(I) Enemy radar faded out.
0145(I) Entered SINGAPORE AREA.
0416(I) Made radar contact with PENGIBOE ISLAND.
0536(I) Commenced patrolling west of PENGIBOE ISLAND.
0648(I) Made radar contact on small vessel at 4400 yards. Remained in
          contact with him until dawn and at

          - 3 -
                                                              ENCLOSURE (A)

— page 69 —
CONFIDENTIAL
8 August 1945 (Cont'd)

0814 (I) Fire two 40mm. shots ahead of him and closed. He immediately
stopped and was boarded by two CHINESE and two MALAYANS. Cargo con-
sisted of wash, rubber bicycle tires, face powder, women's
wooden shoes and sandals. No ship's papers were found. The
crew was taken below and the lugger destroyed by 40mm. gunfire.
Upon questioning, the master of the vessel stated that he was
enroute SINGAPORE to SINGKAWANG, BORNEO. He was one LIE HIE
SENG, an inhabitant of SWATOW, CHINA.
0853 (I) Continued patrolling toward southwest part of area.
1613 (I) Sighted TOKONG KEMOEDI ISLAND and headed toward BORNEO coast.
1730 (I) Relieved of duties in this area by H.M.S. SPEARHEAD.
2250 (I) Exchanged recognition with USS HAWKBILL.

9 August 1945

0245 (I) Made radar contact with LEMOEKOTAN ISLAND.
0413 (I) Closed LEMOEKOTAN ISLAND to 200 yards and put prisoners over
the side in MAE WEST lifejackets 18 miles from their home with-
out charge for taxi service. LEMOEKOTAN is inhabited as
evidenced by lights on the beach.
0422 (I) Cleared island and set course for KARIMATA.
0651 (I) Made radar contact with PENGIKI ISLAND.
1106 (I) Crossed equator at longitude 107-48.
1305 (I) Friendly plane on SD at 36 miles. Established VHF communication.
Plane had nothing for us.
2025 (I) Picked up KARIMATA ISLAND on SJ radar.
2037 (I) Small pip on SJ radar at 4200 yds. This target tracked on
course 225°, speed 3 knots.
2140 (I) Brought small native craft alongside. Weather too rough
for boarding so let him go.

10 August 1945

0004 (I) Entered KARIMATA STRAIT.
0230 (I) SJ contact on target at 11,200 yds. Commenced tracking tar-
get. He was making 9 knots zig-zagging on base course 350°.
Sent out message blind on Wolf Pack frequency asking if any-
one was transitting KARIMATA northbound. No reply. H.M.S.
SCOTSMAN should be about this position so attempted to call
him without results.
0338 (I) In good position so commenced closing for attack.
0353 (I) Range now 2300 yards. In flash of lightning target was ident-
ified as a small submarine, possibly BRITISH, so broke off
attack. Target was leading us into rocks and shoals to south
east of KARIMATA ISLAND so stopped tracking him and resumed
course for JAVA SEA. If this was a BRITISH submarine it would
well behoove him to use his radar at night, build a fire under
his lookouts and adapt a less simple zig-zag plan. If not a
friendly boat we have lost a golden opportunity as this was a
sure setup.

- 4 -
ENCLOSURE (A)

— page 70 —
CONFIDENTIAL
10 August 1945 (Cont'd).

1044(I) Sighted EAST DISCOVERY BANK LIGHT.
1215(I) Closed EAST DISCOVERY BANK to 1500 yards. There is a wrecked
  schooner aground on the east side of the bank and the light-
  house has been damaged apparently by gunfire.
1227(I) Set course for JAVA Coast.
2158(I) Received word that JAPAN had offered to surrender. Held
  celebration.
2253(I) KRAKEN requested rendezvous. Headed for point.

11 August 1945

0121(I) Rendezvoused with USS KRAKEN and established VHF communication.
  KRAKEN said that he was going to southwest corner of JAVA SEA.
0136(I) KRAKEN shoved off. Commenced surface patrol in center of JAVA
  SEA.
1134(I) Sighted two masted PRAU. Headed for him and at
1240(I) Brought him alongside. Crew consisted of six MALAYANS who
  spoke no English, no cargo was aboard so let him go and re-
  sumed patrolling.
2100(I) Set course for BOOMPJES ISLAND.

12 August 1945

0008(I) Exchanged recognition with unidentified friendly vessel by
  SJ radar.
0200(I) Made radar contact with BOOMPJES ISLAND. Commenced patrol-
  ling between BOOMPJES and JAVA. Numerous contacts with native
  small craft.
0717(I) Submerged. Patrolling between BOOMPJES and JAVA. Numerous
  sailing craft in sight throughout the day.
1922(I) Surfaced.
2030(I) Brought sailing craft alongside for inspection. Cargo con-
  sisted of grain, manila line, face powder, tobacco and wicker-
  work knicknacks. His registry papers showed numerous entries
  in JAPANESE. Brought seven MALAYANS on board and set fire to
  the PRAU. He was about ten tons. Continued patrolling south
  of BOOMPJES.
2253(I) Set course for position north of BATAVIA.

13 August 1945

0630(I) Made radar contact on ETNA BANK LIGHT and headed south.
0758(I) Plane contact on SD at 22 miles, unidentified.
0807(I) Brought sailing vessel alongside and made search. No cargo
  so let him go.
0835(I) Brought another sailboat alongside and made search. No car-
  go so let him go.
0900(I) We now have two unidentified planes on SD between 24 and 28
  miles.

- 5 -
ENCLOSURE (A)

— page 71 —
CONFIDENTIAL
13 August 1945 (Cont'd)

0901 (I) Sighted smoke at about 7 miles headed to northwest where there
          are several large columns of smoke apparently on other side of
          THOUSAND ISLANDS. Also sighted bomber up high on northwesterly
          course. There appear to be two large planes at high altitude
          and a JAKE seaplane flying low.
0930 (I) SD contact at four miles. Submerged and headed toward outer
          channel for submerged patrol at eastern end.
1130 (I) Sighted JAKE again through periscope at about three miles.
1212 (I) Took another look and JAKE was still with us.
1253 (I) Looked again and JAKE was still there.
1350 (I) Took a look and we are finally alone.
1404 (I) Sighted SUGAR DOG aground on AGENIENTEN ISLANDS. Apparently
          abandoned.
1448 (I) Sighted convoy consisting of one SUGAR ABLE UNIT, one FOX BAKER,
          one SUGAR DOG, and two small unidentified escort vessels.
          Those ships were bearing 305° True, range about 16,000 yards
          on course 180°. They are on the other side of the THOUSAND
          ISLANDS. Our only chance of getting a shot is if they turn,
          east to transit Outer Channel. We have sound of screws and
          pinging on the sound gear. Took station to await them but
          they did not turn toward and at
1600 (I) Steamed on to the westward side of the islands.
1741 (I) Sighted JAKE seaplane again.
2024 (I) Surfaced and commenced patrolling off SOUTH WATCHER ISLAND.

14 August 1945

0737 (I) Submerged and patrolled off Outer Channel and eastern side
          of THOUSAND ISLANDS.
2022 (I) Surfaced. Patrolling off SOUTH WATCHER ISLAND.

- 15 August 1945

0721 (I) Submerged. Patrolling east side of THOUSAND ISLANDS and Outer
          Channel.
1650 (I) Surfaced off SOUTH WATCHER ISLAND.
1740 (I) Boarded and searched lugger. No contraband so let him go.
1825 (I) Boarded and searched another lugger. No contraband.
1836 (I) Received word to return to SUBIC BAY. Set course for KARIMATA
          STRAITS at four engine speed.
1855 (I) Sighted two masted schooner. Commenced closing for attack
          when word was received to cease hostilities. Resumed course
          for SUBIC.

16 August 1945

0559 (I) Made radar contact with DISCOVERY EAST BANK LIGHT.
0701 (I) Entered KARIMATA STRAIT.

- 6 -
ENCLOSURE (A)

— page 72 —
CONFIDENTIAL

16 August 1945 (Cont'd)

     1504 (I) Completed transit of KARIMATA STRAIT without incident.
     2215 (I) Made radar contact with PEDIJANTAN ISLAND.

17 August 1945

     0030 (I) Made radar contact with BADAS ISLANDS.
     0236 (I) Made radar contact with TOKONG KEMOEDI ISLAND.
     0345 (I) Made radar contact with DOEMDOEM ISLAND.
     0652 (I) Made radar contact with unidentified vessel at 9800 yards.
          Manuevered to avoid.
     1717 (I) Sighted SEMIOEN ISLAND.

18 August 1945

     1036 (I) Made SD contact with plane at 23 miles. Established VHF
          communication.
     1150 (I) Made SD contact with friendly plane at 14 miles.

19 August 1945

     0417 (I) Picked up BRITISH submarine radar on APR.
     0900 (I) Sighted three submarines over the horizon. Probably BRITISH
          also heading for home.
     1145 (I) Picked up plane on SD radar at 16 miles. Established VHF
          contact with friendly plane.
     1242 (I) Left Submarine Patrol Area. Headed toward SUBIC BAY in
          Safety Lane.

20 August 1945

     0812 (I) Made rendezvous with DE 359 and three BRITISH submarines.
     1330 (I) Moored alongside U.S.S. ANTHEDON, SUBIC BAY, P.I., and
          completed third war patrol.

ENCLOSURE (A)

- 7 -

— page 73 —
CONFIDENTIAL

(C) WEATHER.

No unusual weather conditions were encountered.

(D) TIDAL INFORMATION.

Currents were as predicted by H.O. Publications.

(E) NAVIGATIONAL AIDS.

None observed.

(F) SHIP CONTACTS.

| No. | Time & Date | Lat. | Long. | Types | Initial Range | Est. Course & Speed | How Contacted | Remarks |
| :-- | :| :--- | :---- | :---- | :| :| :| :|
| 1   | 0230(I)     | 02-03(S) | 109-09(E) | (1) SS | 11,200 yds. | 350° : 9 kts. | R | Probably British SS |
|     | 8/10/45     |      |         |         |                 |                     |                 |           |
| 2   | 1448(I)     | 05-49(S) | 106-38(E) | (1) SAU | 16,000 yds. | 180° : 13 kts. | P | Unable to close |
|     | 8/13/45     |      |         | (1) FB | (1) FTD | (2) Small | Unident. | Escorts |                 |                     |                 |           |

(G) AIRCRAFT CONTACTS.

| No. | Time | Date | Lat. | Long. | Type(s) | Initial Range | Est. Course & Speed | How Contacted | Remarks |
| :-- | :--- | :--- | :--- | :---- | :| :| :| :| :|
| 1   | 1310(I) | 7/28/45 | 10-38 N. | 111-01 E. | Unident. | 32 miles | Unknown | R | Probably friendly |
| 2   | 1453(I) | 7/28/45 | 10-26 N. | 110-42 E. | Unident. | 30 miles | Unknown | R | Probably friendly |
| 3   | 0900(I) | 7/30/45 | 07-38 N. | 103-46 E. | Unident. | 30 miles | Unknown | R | |
| 4   | 1047(I) | 7/30/45 | 07-44 N. | 103-31 E. | Unident. | 30 miles | Unknown | R | |
| 5   | 1400(I) | 7/30/45 | 08-06 N. | 103-01 E. | Unident. | 12 miles | Unknown | R | |
| 6   | 1542(I) | 8/1/45 | 08-34 N. | 102-49 E. | Unident. | 34 miles | Unknown | R | |
| 7   | 0633(I) | 8/2/45 | 09-18 N. | 103-19 E. | Unident. | 8 miles | Unknown | R | |
| 8   | 1034(I) | 8/6/45 | 08-42 N. | 102-47 E. | Unident. | 40 miles | Unknown | R | |

- 8 -

ENCLOSURE (A)

— page 74 —
CONFIDENTIAL

(G) AIRCRAFT CONTACTS (Cont'd).

No.| Time   | Lat.    | Type(s)   | Range     | Est.Course:| How       | Remarks
   | Date   | Long.   |           |           | & Speed    | Contacted |
---|||||||
9  | 1411(I)| 07-57 N | Unident.  | 35 miles  | Unknown    | R         |
   | 8/6/45 | 102-53 E|           |           |            |           |
---|||||||
10 | 1643(I)| 07-22 N | Unident.  | 28 miles  | Unknown    | R         |
   | 8/6/45 | 103-07 E|           |           |            |           |
---|||||||
11 | 1710(I)| 03-20 N | Unident.  | 27 miles  | Unknown    | R         |
   | 8/7/45 | 104-56 E|           |           |            |           |
---|||||||
12 | 0758(I)| 05-32 S | 2 -Unident| 22 miles  | 330°       | R         | Sighted 1 of
   | 8/13/45| 106-53 E| Bombers.  |           |            |           | these.Large
   |        |         |           |           |            |           | plane could
   |        |         |           |           |            |           | not identify.
---|||||||
13 | 0901(I)| 05-36 S | Jake      | 7 miles   | 330°       | SD        | Sighted 4
   |        |         |           |           |            |           | times thru
   |        |         |           |           |            |           | periscope
   |        |         |           |           |            |           | later in the
   |        |         |           |           |            |           | day.

(H) ATTACK DATA.
No attacks made.

(I) MINES.
On 29 July 1945 a drifting mine was exploded in position 6-43 (N)
                                                              106-22 (E)

(J) ANTI SUBMARINE MEASURES AND EVASION TACTICS.
None observed.

(K) MAJOR DEFECTS AND DAMAGE.
None.

(L) RADIO.
Reception of NVB Fox was good throughout the patrol with no serials
missed. Communications on the SAFPLAN frequencies were also good. Several
messages were intercepted from submarines 1000 - 1500 miles away. Contact
was made with one search plane on this frequency but no information of value
obtained.

ENCLOSURE (A)

- 9 -

— page 75 —
CONFIDENTIAL
(L) RADIO (Cont'd).

VHF channel 1 was completely inoperative all patrol, but channel
4 worked normally and good contact was made with a search plane who had
nothing to report. It was gratifying to carry out communications with
this plane according to the proper plan, with VHF manned on and VHF manned
even though no sightings were reported.

Authentication was generally better than on previous patrols,
though in several cases our Shackle authenticator was refused and one from
CSP 1286 requested.

The following TBL materiel failures occurred:

(1) High frequency range selector switch sparked at contact caus-
ing poor quality transmission. Temporary repair effected by
cleaning and adjusting the worn contact.
(2) Connecting strap on antenna inductance coupling control failed,
the second time this has occurred. New strap was manufactured
by machinists and installed by radio force.

The following log of reception of NVB is submitted. Signal was S5
except at times listed.

| Latitude | Longitude | Date | GCT | Frequency | Strength |
|---|---|---|---|---|---|
| 1-28 N. | 106-13 | 8/7/45 | 2030 | 9250 | S1-2 |
| 0-51 S. | 106-36 | 8/8/45 | 0830 | 9250 | S5 fading |
| 3-42 S. | 109-21 | 8/9/45 | 2230 | 4370 | S3 |
| 5-49 S. | 109-22 | 8/10/45 | 0400 | 9250 | S3 fading |
| 6-18 S. | 108-32 | 8/11/45 | 1700 | 4370 | S3 fading |
| 6-35 S. | 107-33 | 8/12/45 | 1500 | 9250,4370 | S3 fading |
| 6-16 S. | 107-34 | 8/14/45 | 1500 | 9250,4370 | S3 fading |
| | | | | | badly. |

(M) RADAR.

SJ.

After considerable trouble the first week out, the SJ and ST were
adjusted to excellent sensitivity by the LAMPREY's technicians. Much time
was wasted attempting to locate troubles by the trial and error method. For
example, out of 18 hours the SJ was inoperative, 8 were made necessary in
order to use the ST for searching, and another 8 were spent locating the
trouble. Easy and accessible check points would be of inestimable help
in tracking down and isolating sources of failure. The PPI continues to be
a constant source of minor troubles. Typical SJ ranges were:

DISCOVERY EAST BANK LIGHT (82 ft. high) 33,000 yards
USS KRAKEN 13,000 yards
Small Sailboats 4,300 yards

The usual phantoms were encountered day and night around the com-
pass at ranges of 1500 - 2500 yards.
Total hours of operation were 309, with 24 hours out of commission.
One magnetron is still going steady after 650 hours of operation.

- 10 -
ENCLOSURE (A)

— page 76 —
CONFIDENTIAL
(M) RADAR (CONT'D)

The following SJ-1 failures occurred:

(1) Power output of transmitter became extremely low. All tubes were
replaced without improvement. An oil leak was found in the modulation net-
work and the unit replaced from spares, without improvement. After much
searching, condenser C-22A was found shorted out and replaced. While firing
up the equipment, the main power switch on the control unit burned out.
Since no replacement could be improvised, the switch was shorted and the
equipment controlled from the power switch in the radio shack. When put
into operation the performance was the best it has been since commissioning.
Equipment out 18 hours during most of which the ST was used for searching.
(2) PPI performance below normal, restored by replacing main multivi-
brator in the transmitter.
(3) Erratic grass height on "A" scope corrected by replacing 717A's
in transmitter-receiver.
(4) PPI blanked out intermittently because of blown fuses. Fuses
replaced and rectified rectifier voltage lowered to correct trouble.
(5) PPI intensity became too great and could not be lowered by con-
trols. Defective R-32 and tube V-6 replaced, restoring the unit to normal
operation.
(6) Lobe switching failed. Trouble was traced to contact S-1 located
in the antenna mast. Cover plate was removed at night and contact found
apparently welded shut. Since adjusting screw could not be reached, the con-
tact was adjusted by bending. This temporary repair lasted long enough to
make an approach but later failed after about 5 hours of operation. Proper
repair will require removal of entire antenna head.

ST.

When used this radar gave satisfactory results though no approaches
were made with it. As a search radar it is a poor second to the SJ because
of its lower range and hand training. Tuning of this gear is a touchy, un-
stable matter and several hours were required by two technicians before pro-
per sensitivity was realized.

SD.

The SD and IFF equipments continue to give excellent, reliable per-
formance. Initial SD ranges varied from 45 to 18 miles, and one Liberator
flying at 4000 feet was tracked in to 1½ miles without being lost. Total
hours of operation 550, with no time inoperative.

SPR.

The SPR worked properly except for the directional antennas, all
four of which showed low ground readings after a few days at sea. The ex-
ternal junction box covers appeared warped, the gaskets deteriorated, and
the port shear valve developed a bad leak during a deep dive. All will have
to be replaced. Also replaced tube 955 to increase sensitivity.

LORAN

This equipment remained in good operating condition throughout the
patrol.
ENCLOSURE (A)

- 11 -

— page 79 —
CONFIDENTIAL

(U) RADIO AND RADAR COUNTERMEASURES AND INTERCEPTION OF ENEMY TRANSMISSIONS.
(Cont'd).

RADIO COUNTERMEASURES JAMMING BY THE ENEMY

1. Ship or Station - U.S.S. LAMPREY (SS372).

2. Position, bearing and altitude when enemy radio signals were jammed -
   SIAM GULF to JAVA SEA.

3. Position of Transmitting Station - Unknown.

4. Date of Jamming - 1 August 1945 to 16 August 1945. Time: 0300 and 1300
   GCT.

5. Frequencies jammed - 7.25 mc.

6. Describe signal jammed - AFRS broadcast.

7. Use of circuit - News broadcast.

8. Was enemy jamming signal stable - Yes.

9. What was ratio of strength of own signal to enemy jamming signal -
   Did not transmit.

10. What was power output of own transmitter at time of jamming - None.

11. Location of enemy jammer: Land based radio station. Position - Unknown.

12. Type of jamming signals: CW transmission.

13. Effectiveness of jamming: 70 to 90%.

14. Action taken to overcome jamming - Unable to overcome with controls
    of RBH receiver.

15. Bandwidth covered by enemy jamming signals - not determined.

16. Did jamming transmitter appear to be monitored by a look-in receiver -
    Not determined.

17. If frequency was shifted, how long before enemy jammed new frequency -
    Frequency was not shifted.

                                                              ENCLOSURE (A)

- 14 -

— page 80 —
CONFIDENTIAL

(v) REMARKS.

(a) No minesweeping activity observed.
(b) Enemy traffic routes. Only convoy observed was steaming toward
BATAVIA close in and to the west of the THOUSAND ISLANDS.
(c) Loran Equipment:

In JAVA SEA lines of position were obtainable from stations 2H4
and 2H5.

In eastern part of SIAM GULF lines of position were obtain-
able from 4L5 and 4L6.

In SOUTH CHINA SEA north of 8° N. and west of 114° E. lines of
position were obtainable from 4H6 and 4H7.

In none of above cases were the lines far enough from being parallel
to obtain anything approaching a fix. Our operators are very inexperienced
and need considerable more training.

It is believed that this equipment would be very valuable in sub-
marines, were proper charts and tables furnished which showed all stations
covering an area on the same chart and were stations located so as to fur-
nish lines of position at an angle to each other of 45° or over.

ENCLOSURE (A)

- 15 -

— page 81 —
FC5-26/A16-3

Serial: 0342

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

FIRST ENDORSEMENT to
U.S.S. LAMPREY (SS372)
Report of 5th War Patrol.

From:
To :
Via :

Subject:

1.
command of Lieutenant Commander L.B. McDonald, was conducted in
the Gulf of Siam and the Java Sea. The patrol was of twenty-five
(25) days duration, of which twenty-three (23) days were spent in
the area.

2.
small convoy of one Sugar Able Unit, one Fox Baker, one Fox Tare
and two small escorts. Unfortunately the LAMPREY was not in
a position to attack and the convoy got away. Numerous native
craft were brought along side for search. One fifteen ton lugger
was sunk by 40mm fire and one ten ton prau was burned. The patrol
was terminated by the cessation of hostilities.

3.
good materiel condition. No refit will be necessary and the ship
will be ready for sea upon replenishing fuel and stores.

4.
men from this patrol and regrets their lack of targets and
opportunities to inflict more damage upon the enemy.

SUBMARINE SQUADRON TWENTY-SIX

Mh

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

Commander Submarine Squadron TWENTY-SIX.
The Commander-in-Chief, U.S. Fleet.
(1) The Commander Submarines, SOUTHWEST PACIFIC.
(2) The Commander SEVENTH Fleet.

U.S.S. LAMPREY (SS372) - Report of Third War Patrol.

The third war patrol of the LAMPREY under the

Only one enemy ship contact was made and that a

The LAMPREY arrived from patrol very clean and in

The Squadron Commander welcomes the officers and

[SIGNATURE: B. E. Bacon, Jr.]
11 0104

— page 82 —
FE24-71/A16-3
Serial 0471-A

UNITED STATES NAVY
12/hn
29 August 1945.

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

SECOND ENDORSEMENT to:
USS LAMPREY Conf. Ltr.
A16/A9 Serial 026, dated
20 August 1945. Report
of Third War Patrol.

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

Subject: U.S.S. LAMPREY (SS372) - Report of Third War
Patrol - Comment on.

1. The Third War Patrol of the LAMPREY under the command
of Lieutenant Commander L. B. McDONALD, U.S.N., was conducted in
the GULF of SIAM and the West JAVA SEA.

2. An enemy convoy of small ships was contacted in the
West JAVA SEA but LAMPREY was unable to gain position for attack
because of heavy air cover. Two cargo carrying small craft were
sunk by gunfire after safety of the native crews was provided for.

3. The award of the Submarine Combat Insignia is not
authorized for this patrol.

4. The Force Commander congratulates the Commanding
Officer, Officers and Crew of the LAMPREY upon the completion of
this patrol and upon their contribution toward the defeat of the
enemy.

SUNK
2 - SMC
22 Tons
[SIGNATURE: B.E. Baconjr.]
W. L. WRIGHT.
A. Chief of Staff.
ORIGINAL COPY.

- 1 -

11 0104

— page 83 —
FE24-71/A16-3
Serial 0471-A
[UNCLEAR: CONFIDENTIAL]

SECOND ENDORSEMENT to:
USS LAMPREY Conf. Ltr.
A16-3/A9, Serial 026,
dated 20 August 1945.
Report of Third War Patrol.

Subject: U.S.S. LAMPREY (SS372) - Report of Third War
Patrol - Comment on.

— page 84 —
UNITED STATES FLEET
COMMANDER SEVENTH FLEET

[STAMP: NO F489]
[HANDWRITTEN: 11 0104]
[HANDWRITTEN: 20]

A16-3(F-3/gtc)
Serial: [HANDWRITTEN: 0301]

C-O-N-F-I-D-E-N-T-I-A-L
[HANDWRITTEN: 8 OCT 1945]

THIRD ENDORSEMENT to:
CO USS LAMPREY conf ltr
SS372/A16/A9, serial
026, dated 20 August
1945.

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

Subject: U.S.S. LAMPREY (SS372) - Report of
Third War Patrol.

1. Forwarded.

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

— page 85 —
END OF REEL
JOB NO. [HANDWRITTEN: F-108]
[HANDWRITTEN: AR-40-79]

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THIS MICROFILM IS
THE PROPERTY OF
THE UNITED STATES
GOVERNMENT

[IMAGE: Department of Defense Seal with text "DEPARTMENT OF DEFENSE" and "UNITED STATES OF AMERICA"]

MICROFILMED BY
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