U.S.S. BLUEBACK (SS-326) — war patrol report SS-326_BLUEBACK.pdf

— page 1 —
START OF REEL
JOB NO. [HANDWRITTEN: F-108]
[HANDWRITTEN: AR 94-78]

1.0
2.8 2.5
3.15 2.2
1.1
3.5 2.0
OPERATOR [HANDWRITTEN: HARRIS]
4.0
4.5 1.8
1.25 1.4 1.6
DATE [HANDWRITTEN: 23 May 78]

THIS MICROFILM IS
THE PROPERTY OF
THE UNITED STATES
GOVERNMENT

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

MICROFILMED BY
NPPSO—NAVAL DISTRICT WASHINGTON
MICROFILM SECTION

REEL TARGET, START & END
NAVEXOS 3968

— page 2 —
[HANDWRITTEN: BLUEBACK (SS-326)
WWII PATROL FILE
ALL MATERIAL ON THIS REEL Is DECLASSIFIED
FOR DECK LOG AUGUST 1944 - DECEMBER 1945
CONSULT NATIONAL ARCHIVES WHICH HAS CUSTODY

J.A. KOONTZ]

— page 3 —
Blueback

Blueback is a salmon.

I

(SS-326: dp. 1526; l. 311'9''; b. 27'3''; dr. 16'10''; s. 20.3
k.; cpl. 66; a. 1 5'', 10 21'' TT.; cl. Balao)

Blueback (SS-326) was launched 7 May 1944 by Electric
Boat Co., Groton, Conn.; sponsored by Mrs. William Brent
Young, wife of Rear Admiral Young; and commissioned
28 August 1944, Lieutenant Commander M. K. Clementson
in command.

Blueback arrived at Pearl Harbor 21 November 1944.
During 16 December 1944-20 July 1945 she completed
three war patrols in the South China and Java Seas.
Blueback sank a 300-ton submarine chaser, as well as eight
smaller vessels. Blueback arrived at Subic Bay, Luzon,
Philippine Islands, from her third and last war patrol
20 July 1945.

On 4 September 1945 she arrived at Apra Harbor,
Guam, where she remained until 28 November, conducting
daily underway training exercises. After a voyage to
the Caroline and Admiralty Islands, she returned to Guam
15 December. She stood out for San Diego 12 January
1946. Remaining on the west coast until 26 August 1946,
she then departed for a tour of the Far East. She visited
Pearl Harbor; Truk; Subic Bay; Tsingtao and Shanghai,
China, before returning to San Diego 29 November. Blue-
back conducted one more cruise to Pearl Harbor (17 Feb-
ruary-4 April 1947) and then carried out local operations
and type training along the coast of California until
March 1948.

On 4 March 1948 Blueback departed the west coast and
proceeded to the Mediterranean, via New London, Conn.
She arrived at Izmir, Turkey, 11 May 1948 and on 23
May 1948 was decommissioned and transferred to Turkey.
Blueback received two battle stars for her World War
II service.

II

The second Blueback (SS-581) was launched 16 May
1959 by Ingalls Shipbuilding Corp., Pascagoula, Miss.;
sponsored by Mrs. Kenmore McManes, wife of Rear Ad-
miral McManes.

— page 4 —
Dictionary of
American Naval
Fighting Ships

VOLUME I . 1959
REPRINT WITH CORRECTIONS 1970

[SEAL: DEPARTMENT OF THE NAVY * UNITED STATES OF AMERICA]

NAVY DEPARTMENT
OFFICE OF THE CHIEF OF NAVAL OPERATIONS
NAVAL HISTORY DIVISION . WASHINGTON

— page 5 —
[HANDWRITTEN: 1ST COPY]

U.S.S. BLUEBACK (SS326)
Care of Fleet Post Office
San Francisco, California

15 February 1945

SS326/A16-3
Serial 002

DECLASSIFIED A-L

From: Commanding Officer, U.S.S. BLUEBACK (SS326).
To : Commander-in-Chief, UNITED STATES FLEET.
Via : Official Channels.

Subject: U.S.S. BLUEBACK (SS326), Report of First War Patrol.

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

1. Enclosure (A), covering the first war patrol of this
vessel conducted in the NANSEI SHOTO Japanese Empire waters and opera-
tions in Southwest Pacific areas during the period 16 December 1944, to
15 February 1945, is forwarded herewith.

[SIGNATURE: N. CLEMENTSON.]
N. CLEMENTSON.

DECLASSIFIED-ART. 0445, OPNAVINST 5510.1C
[HANDWRITTEN: BY OP-0909 C DATE 5/24/72]

[STAMP: DECLASSIFIED]

[STAMP: 113318]
[STAMP: 11 APR]
[STAMP: FILMED]

— page 6 —
- To provide the most accurate transcription, I will transcribe the text exactly as it appears, including any visible formatting and distinguishing between typed and handwritten elements.

---

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

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C-O-N-F-I-D-E-N-T-I-A-L
Subject: U.S.S. BLUEBACK (SS326), Report of First War Patrol.
Lt. Comdr. R. HOLDEN, U.S.N., reported aboard as P.C.O.

(B) NARRATIVE

16 December 1944
1345(VW) Underway in accordance with Commander Task Force Seventeen
        Operation Order No. 412-44 dated 15 December 1944. In com-
        pany with U.S.S. PUFFER, Task Unit 17.19.3, U.S.S.
        BLUEBACK, Task Unit 17.19.1. Will join U.S.S. SEA FOX,
        Task Unit 17.19.2 at sea to complete Task Unit 17.19.
        Coordinated attack group, C.O. BLUEBACK, group commander.

16 - 23 December 1944
        Conducted daily drills and dives enroute. Concentrated on
        communication training. Dropped 20 December from calendar.

23 December 1944
        Effected rendezvous with U.S.S. SEA FOX. Delivered guard
        mail via line-throwing gun. Proceeding SAIPAN in company.

23 - 27 December 1944
        Exercised at group communication drills and routine ship
        training.

27 December 1944
1240(K) Made rendezvous with U.S.S. PC 1126. Commenced steering
        various courses for SAIPAN.
1620(K) Simultaneously with "Emergency" Signal picked up on SD radar,
        sighted B 24 ditching on true bearing 294, distant 2½
        miles. Plane broke in half and sank. Put rudder hard
        over and went to 4 engine speed to pick up aviators.
        Wolf pack and escort followed this ship's movement.
1640(K) Recovered from rubber boat the following Army Air Force
        personnel with injuries as listed:
        BUATT, J.L., Cpl., 38438067, USAAF. Deep laceration of
        scalp, deep laceration of right thigh, laceration
        of right wrist, fracture of femur, of tibia and
        of fibia of the right leg.

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3
C-O-N-F-I-D-E-N-T-I-A-L
Subject: U.S.S. BLUEBACK (SS326), Report of First War Patrol

29 December 1944
1030(K) Voyage repairs, including new high lookout platform completed,
which the C.O. believes was well worth the delay occasioned.
BLUEBACK will arrive on Patrol Station on time.
1316(K) Under way for patrol station. Every courtesy and service was
extended this vessel by CSS 8, members of his staff, and
C.O. U.S.S. FULTON.
1352(K) Made rendezvous with U.S.S. PC 1126.
1800(K) Informed escort of his rendezvous position with another
submarine.
1900(K) Escort departed, continued zig-zag on base course 312T.
2137(K) (SC#1) SJ radar contact, 315T range 19,200 yards, commenced
tracking.
2200(K) Exchanged recognition signals with U.S.S. GRAYSON, DD 435.

30 December 1944
0850(K) (PC#1) Dived for unidentified plane contact. Lookout sighted
it in sun.
0937(K) Surfaced.
1000(K) Set clocks to zone (-9) time.
2300(I) Received orders from COMSUBPAC changing our patrol station.

31 December 1944
1830(I) Directed PUFFER to patrol southern third and SEA FOX to
patrol middle third of Area.
1858(I) SEA FOX notified us she had sighted periscope.

1 January 1945
Surface cruising enroute area.
1414(I) Received message from COMSUBPAC directing this task group
to submit weather reports on dates designated.
2059(I) Received message from COMSUBPAC assigning this group an
additional area until 9 January.

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C-O-N-F-I-D-E-N-T-I-A-L
Subject: U.S.S. BLUEBACK (SS326), Report of First War Patrol.

12 January 1945 Cont'd.

2306(I) After three and a half hours of trying, we cleared our
        weather report to COMSUBPAC. It was unfortunate that
        we had to break radio silence so violently while attempting
        to round up a convoy.

2320(I) Radar interference on the SJ.

2330(I) Exchanged calls with SEA FOX. Our search was completed.

        Directed SEA FOX to patrol KUME SHIMA. We will cover
        NAHA to catch traffic driven out by the air strike and
        to watch for aviators.

13 January 1945

0633(I) Submerged off NAHA.

1320(I) Heard distant explosions.

1835(I) Surfaced with our expectations unfulfilled.

2330(I) Converted No. 4 Fuel Ballast Tank to a main ballast tank.
        Once again sincerely wished the designer of this imprac-
        tical system was on board to do the job.

14 January 1945

0003(I) Exchanged calls with SEA FOX via SJ radar. Told him we
        would patrol off KUME SHIMA.

0648(I) Submerged off KUME SHIMA.

1846(I) Surfaced in heavy seas to find ourselves in the clutches
        of a 149 megacycle shore radar station, evidently on
        KUME SHIMA. He would stay on us for 4 minutes to 20
        seconds at a time and then sweep. Put our stern to him
        and opened out. Finally at

2130(I) With the nearest land over 80,000 yards distant, he went
        off our APR screen very abruptly. It appeared that his
        gear had suffered a casualty. Up to that time he seemed
        to have had very good saturation contact. Some more
        tracking drill for the Nips with the target exercising
        at various evasive measures.

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C-O-N-F-I-D-E-N-T-I-A-L
Subject: U.S.S. BLUEBACK (SS326), Report of First War Patrol.

19 January 1945 Cont'd.

1910(I) Ship contact (SC#3) ahead 8000 yards on ST radar and thru
        night periscope. Stopped. Contact disappeared. This may
        have been SWORDFISH or perhaps the Jap had decided to do
        something about our repeated appearance off KURE SHIMA.
        S.J. radar could not pick up contact. Cleared area.

2054(I) Transmitted weather report to COMSUBPAC.

20 January 1945

0632(I) Submerged.

1845(I) Surfaced.

2100(I) Received message from PARCHE. She had sighted tops of
        southbound convoy in area north of ours. Put three engines
        on propulsion and headed for contact. Directed SEA FOX to
        give us his position. We were 126 miles distant bearing
        235T from contact which was at 1600. Steered 050T. Our
        earliest meeting time was 0100. PARCHE said she would
        cover southeast sector. This looked like a perfect set-up
        for co-ordinated flank search in the southwest quadrant
        with all points covered by 0400. Shades of Convoy College.

2300(I) SEA FOX gave us his position. She was east of BLUEBACK.
        Directed her to take position 20 miles to east of us. We
        could then change course to north and let her cover the
        south southwest octant. Things are looking very good.

21 January 1945

0033(I) AIR contact at 155 megacycles. Perhaps this plane is
        scouting for convoy.

0053(I) Reached earliest meeting point for this course. Came
        left to course 300T to head for 0200 circle.

0058(I) Saturation on AIR at 156 megacycles. SD out of commission.

0100(I) With continuous saturation on AIR at low gain (4/10) sub-
        merged (Our first dive on AIR) (FC#4) (AIR receiver jumping
        up and down on mountings).

0137(I) SD back in commission. Surfaced.

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C-O-N-F-I-D-E-N-T-I-A-L
Subject: U.S.S. BLUEBACK (SS326), Report of First War Patrol.

(F) SHIP CONTACTS (Cont'd)

No.: Time :Lat. :Type :Init. :How :Remarks
   : Date :Long. :     :Range :Contacted
13.: 2/13/45:12°48'N :U.S.S. :5000 :Periscope :Exchanged recog.
   : 0730  :109°27'E :GUAVINA.:     :           :& calls by ST
   :       :         :       :     :           :Sonar.
   :       :         :       :     :           :
14.: 2/13/45:12°29'N :U.S.S. :6000 :SJ Radar  :Exchanged recog.
   : 1220(I):110°10'E :ARGO   :     :           :& calls by SJ
   :       :         :       :     :           :Radar
   :       :         :       :     :           :
15.: 2/14/45:12°17'N :Sail-  :15mi.:Per.       :
SC#4

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C-O-N-F-I-D-E-N-T-I-A-L
Subject: U.S.S. BLUEBACK (SS326), Report of First War Patrol.

(H) ATTACK DATA
     No attacks made.

(I) MINES
     Drifting mine was sighted, Lat. 26°26'N, Long. 126°24.5'E,
     while we were submerged. We were too close to ram or surface
     and sink it.

(J) ANTI-SUBMARINE MEASURES
     Usual search planes day and night, and convoy escort planes.
     In the search area of numerous land base radars, no patrol vessels
     were encountered.

     3 or 4 sail boats were patrolling off CALIAN BAY when a convoy
     was due, at least one of which was pinging.

(K) MAJOR DEFECTS AND DAMAGE

     1. HULL
          The automatic by-pass valve on #1 hydraulic plant developed a
          thump on 2 February 1945. Upon disassembly the leather cup washer
          on the valve plunger was found to be 1/4 eaten away. Renewal of
          this washer resulted in quiet and satisfactory operation.

          Low pressures on the 3rd stage discharge and high pressures
          on the 1st stage discharge causing the relief to lift were noticed
          on #1 air compressor (Hardy Type) on 10 February 1945. Piston rings
          in the 3rd stage piston proved to be unsatisfactory and were renewed
          with oversized spare replacement rings. Operation continued
          and was remedied by manufacturing oversize rings. Out of commission
          a total of 5 days. Recommend additional spare rings be carried.

          Excessive rumbling in the superstructure is noticed at speeds
          of 5 knots and above, while submerged. It is believed to be caused
          by vibration of the SJ mast and drumming of the fairwater plating.

          On 8 February 1945, the securing latch on the CT hatch failed
          to operate properly to permit closure of the hatch. Inspection re-
          vealed excessive wear on the latch at the point of contact with the
          hatch cover. This resulted in the latch rotating on its securing
          pin so as to strike the hatch seat beyond the extremity of the
          sloping surface. Wear had also occurred at the top of the latch
          due to contact with the hatch seat. Filing down of the latch tip
          and sloping surface resulted in satisfactory operation.

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C-O-N-F-I-D-E-N-T-I-A-L
Subject: U.S.S. BLUEBACK (SS326), Report of First War Patrol.

(10) RADAR (Cont'd)
The ST was used a few times for searching, but as the ranges
obtainable with it are much less than the SJ and as the SJ was used
to intercept inter-wolf pack communications, this was not general prac-
tice. Good ST ranges were obtained when surface targets were allowed
to be followed out to about 7000 yards as against 10,000 for the SJ,
with much better ranges for larger targets. Ranges on a submarine
when on were as high as 16,000 yards. Submerged to 50 ft., land
could be picked up at over 20,000 yards, the best range being 29,000
at 50 feet. Echoes were returned from a large empty tanker at 9500
yards from 50 feet depth.

ST maintenance was routine, but it was noted from the day of
installation that the frequency stability was very poor and that
the gear required constant retuning. Replacement of local oscillator
tubes gave some improvement, but frequency drift was still evident.

The Echo Box furnished with the ST, being an untuned cavity,
did not give best tuning at the same setting as the Echo Box on
a tuned Echo Box is very desirable. Tuning with the ST Antenna
Dummy Antenna and periscope antenna required different settings, and
the variations in the height of periscope antenna gave slightly
different settings.

A vertical jitter in the Range Indicator was traced to tube
V2 in the I.F. amplifier in the Selector Unit. The tube tested good,
but replacement of it cleared up the jitter. Intermittent high
intensity flashes in the PPI were eliminated by replacing V4, which
was shorted, and V2, which was weak. At another time, replacing V7
eliminated the same trouble. Other troubles were a gassy 5U4G
which caused a low voltage in regulated rectifier; a gassy 5Y3
Voltage Rectifier tubes; broken cables and open loads.

As has been previously noted, a casualty in the Selector Unit
caused loss of operating time with both SJ and ST. When trouble
occurs in this unit, the power rectifier units, the Main Control
Unit, the Range Indicator or the Range Unit, both SJ and ST are
made inoperative due to the interconnection between the systems, so
that a casualty at a critical time places all radar aboard out of
commission. This arrangement is not satisfactory.

It is recommended that the PPI be equipped with True-Relative
bearing circles and a pointer, to enable reading approximate bearings
from the PPI more accurately while continuing to sweep. Also desir-
able for navigation with the SJ is an increase in the range calibra-
tion of the Range Unit to the full length of the main sweep.

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— page 57 —
The following text is transcribed from the image, distinguishing between typed and handwritten content, and preserving formatting as accurately as possible.

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

Subject: U.S.S. BLUEBACK (SS326), Report of First War Patrol.

— page 62 —
SUBMARINE SQUADRON TWELVE

FC5-12/A16-3
Serial 036

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

CONFIDENTIAL
FIRST ENDORSEMENT to
U.S.S. BLUEBACK Report
of First War Patrol.

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

Subject: U.S.S. BLUEBACK (SS326) - Report of First
War Patrol.

1. BLUEBACK's first war patrol was of 61 days duration, 46
of which were spent in the assigned areas.

2. The Commanding Officer BLUEBACK was Group Commander
of a pack composed of BLUEBACK, PUFFER, and SEA FOX while under
operational control of Comsubspac and preliminary reports from
PUFFER to BLUEBACK indicate that the pack commander assigned PUFFER
a fruitful area. In addition, BLUEBACK performed life guard duties
and weather reporting duties.

3. A smoke contact was made while submerged in the vicinity
of OKINOTORU. Attempt to close followed by night search was unsuccess-
ful. The second and only other contact was made while submerged off
CAMRANH BAY and consisted of three tankers with three escorts plus
air cover. BLUEBACK was unable to close. Contact with the same con-
voy was again made on the following day and approach was again
frustrated when BLUEBACK was not able to close; in each case the convoy
was within a mile of the beach.

4. While approaching Saipan the task group rescued eight
U.S. Army personnel from a ditched B-24; four of these were picked up
by the BLUEBACK.

5. The state of health of the crew and the cleanliness of
ship is excellent. Morale is of a high order despite the lack of targets
on this long and arduous patrol.

6. The BLUEBACK's material condition is good. All defects
will be corrected during a normal refit by GRIFFIN and Relief Crew 122.
The cause of the cracked main engine liners is believed to have been
determined, and corrective steps are being taken to prevent continuance
of this difficulty.

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— page 63 —
F05-12/A16-3
SERIAL 036
CONFIDENTIAL
FIRST ENDORSEMENT to
U.S.S. BLUEBACK Report
of First War Patrol.

Subject: U.S.S. BLUEBACK (SS326) - Report of First
         War Patrol.

                                        SUBMARINE SQUADRON TWELVE
                                        Care of Fleet Post Office,
                                        San Francisco, California,
                                        23 February 1945.

7.
         The Commander Submarine Squadron TWELVE welcomes the
Captain, Officers, and Crew to Subic Bay and Camp Co. and congratulates
them upon the rescue of aviation personnel and the completion of this
long arduous patrol. It is hoped that enemy targets will be more
plentiful on their next patrol.

                                        [SIGNATURE: C.W. Wilkins]
                                        C.W. WILKINS.

— page 64 —
14/1h

FE24-71/A16-3
UNITED STATES NAVY
Serial 0556
20 March 1945
[STAMP: C-O-N-F-I-D-E-N-T-I-A-L]

SECOND ENDORSEMENT to:
USS BLUEBACK Conf. Ltr. A16-3
Serial 002, dated 15 February
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. BLUEBACK (SS326) - Report of First War
         Patrol - Comment on.

1. The First War Patrol of the BLUEBACK under the
command of Commander M. K. CLEMENTSON, U.S.N., consisted of
two parts. From 29 December to 31 January, BLUEBACK patrolled
in the Areas of Commander Task Force SEVENTEEN as OTC of a
Coordinated Group consisting of PUFFER and SEADOG. From 1 to
15 February, she patrolled in the SOUTH CHINA SEA off the coast
of INDO-CHINA.

2. Two sight contacts were made on a convoy skirting
the coast of INDO-CHINA, but in each case the convoy was too
close to the beach for BLUEBACK to close for attack. A previous
smoke contact, on 12 January, could not be developed.

3. Just prior to arrival at SAIPAN four Army aviators
were rescued from a crashed plane. During this patrol both life-
guard and weather reporting services were capably performed.

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

5. The Force Commander congratulates the Commanding
Officer, Officers and Crew of the BLUEBACK upon the completion
of this long and well conducted patrol during which lifeguard
and rescue missions were completed and valuable weather report
services were performed.

[SIGNATURE: R. S. FIFE.]
ORIGINAL COPY

-1-
[STAMP: 4 03298]

— page 65 —
FEB4-71/18-3
Serial 0556
[STAMP: CONFIDENTIAL]
C-O-N-F-I-D-E-N-T-I-A-L

UNITED STATES NAVY
1./lh
20 March 1945

SECND INDORSEMENT to:
USS BLUEBACK Conf. Ltr. 18-3
Serial 002, dated 15 February
1945. Report of First War Patrol.

Subject: U.S.S. BLUEBACK (SS326) - Report of First War
Patrol - Comment on.

DISTRIBUTION:
Cominch (5) Disect CTG-71.5 (2)
Vice CNO (2) Disect CTG-71.8 (2)
Vice Comoy Op-200 (1) ComSubRon-36 (2)
Com 1stFlt (1) DivComSubRon-12 (1 each)
Com 3rdFlt (1) DivComSubRon-18 (1 each)
Com 7thFlt (2) DivComSubRon-26 (1 each)
Com SubPac (1) S/F School, P.O. Comm. (2)
Com SubRon-1 (1) DisComSub, Pearl Sound (1)
CTF-71 (7) SubD, Pearl Island (1)
CTG-71.4 (2) S/F, 7th Flt (1)

[HANDWRITTEN: J.M. Miller]
J. M. MILLER
LT.
Flag Secretary.

[STAMP: RECEIVED]
[STAMP: COMMANDER]
[STAMP: SEVENTH FLEET]
[STAMP: 11 APR 1945]

33288

- 2 -

— page 66 —
UNITED STATES FLEET
COMMANDER SEVENTH FLEET

A16-3(8)(F-3-4/jk)
Serial: [HANDWRITTEN: 01538]

Reg. No. [HANDWRITTEN: 3160]
[HANDWRITTEN: 4 03299]
R. S. No. [HANDWRITTEN: 100100]

CONFIDENTIAL

THIRD ENDORSEMENT on:
USS BLUEBACK Conf. Ltr.
A16-3, ser. 002 dated
15 February 1945.

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

Subject: U.S.S. BLUEBACK (SS326) - Report of First War
Patrol - Comment on.

1. Forwarded.

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

— page 67 —
```
[HANDWRASSEN: 1ST COPY]

U.S.S. BLUEBACK (SS326)
Care of Fleet Post Office
San Francisco, California

SS326/A16-3
Serial 04-45
DECLASSIFIED A-L

— page 72 —
"The best way to predict the future is to create it." - Abraham Lincoln"

This quote emphasizes the power of human agency and proactive effort in shaping what is to come, rather than passively waiting for it to unfold. It suggests that the future isn't a predetermined path but a landscape that can be influenced and built through our actions, decisions, and innovations in the present.

— page 76 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: U.S.S. BLUEBACK (SS326), Report of War Patrol Number Two.
14 March 1945 (Continued)

1200 Posit 12°58'N, 110°03'E.

1433 Intercepted wopaco message that two enemy subs were patrol-
     ling area 200 miles to north. Contacted plane on wopaco.
     Nothing else for us.

     BLACKFIN reported sighting about 50 small sailboats near
     beach. Southbound.

     In view enemy sub report decided to conduct anti-sub
     patrol so set schedule ABLE modified with stations two
     and four moved 15 miles south with instructions for Pack
     to patrol submerged at discretion.

0200 Received CTF 71 serial 57, directing search for downed
     aviators in conjunction with aircraft search.

0500 Set watch on 500 kc. We can use our submerged loop as a
     direction finder if we can hear his signals.

0600 Cruising on surface.

0800 Sank steel mooring buoy with 20 MM.

0830 Commenced 17 knot rectangular search in accordance USF 25(a)
     for life raft. Certainly hope to pick up these gents. Con-
     ditions are quite favorable for sighting. Nothing on 500 kcs.

1100 Heard PB4Y search plane call us (2 x 2). Do not think they
     heard our reply. Turned on IFF and SD to aid him in locating
     us.

1155 Called army rescue search plane. No response (4475 kcs).

1200 Posit 12°57'N, 109°54'E.

1252 Wopaco intercept indicated friendly sub sighted presumably
     unfriendly torpedo wakes. This confirms yesterday's
     intercept on same subject.

1430 Contacted PB4Y search plane thru BLACKFIN. Plane had no
     message for us.

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C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS BLUEBACK (SS326), Report of War Patrol Number Two.

15 March 1945 (Continued)
1915 Search completed. CTF 71, Serial 57 complied with. Aviators
      recovered by U.S.S. REMILL. Well done to Commander HYDE,
      crew and ship.

16 March 1945 (H)
      Sent directive concerning continuation of modified schedule
      ABLE, and A/S patrol.

      Cruising on surface. Set lifeguard watch in compliance
      CTF 71 dispatch 131735, Serial 44. Heard plane talking
      but heard no call for services.
1200 Posit 13°45'N, 110°07'E.
1740 Worked PB4Y search plane. Nothing for us.

17 March 1945 (H)
      Schedule ABLE modified. BLUEBACK on surface.
1200 Posit 13°20'N, 110°14'E.
1211 Communicated with PB4Y search plane. Nothing for us.
1530 Heard GLENNY working search plane. Asked GLENNY if plane
      had anything for us. Negative.

18 March 1945 (H)
      Schedule ABLE modified.
1030 Worked search plane who sent us position, course and speed
      in aircraft contact code. A garble in one group gave this
      a speed of 18 knots so held a realistic "Convoy College"
      maneuver of four boats of the pack and formed scouting line
      for search from ahead.

      Was trying to degarble the dispatch when BLACKFIN said they
      decoded the same message with speed of 162 knots. Garble our
      fault. This confirmed my growing suspicion so told pack,
      "Drill completed. Face Red." It was a realistic drill and
      believe it did a lot of good.

- 10 -

— page 79 —
C-O-N-F-I-D-E-N-T-I-A-L

Subject: USS BLUEBACK (SS326), Report of War Patrol Number Two.
20 March 1945 (Continued)

1000-1230 Communicated with following disassociated forces:
  Submarine Pack Two
  Submarine Pack Eight
  Navy PB4Y search planes (3)
  Catalina rescue plane
  Army B-25 cover for Catalina (2)
  Army "Special" plane
  Navy VPD-20
  Army B-25 striking force.

Only a very few IFF returns were obtained on the S.D. Radar,
which was somewhat disconcerting to say the least. In spite
of "interference eliminating" alterations to the S.D., it
still causes much difficulty when working weak signals.

By much perseverance, personnel supervision and invaluable
assistance from other subs, particularly FLOUNDER, collected
data on convoy movement and fact that a B-25 had ditched some
300 miles to the eastward. This was an oft REPEATED PLAIN
LANGUAGE report with latitude and longitude and not coded.
No reference point was used.

A thoroughly pursued interchange of communications personnel
should prove to be of inestimable value to all parties.
Recommend submarine officer and enlisted personnel fly on
both Army and Navy missions. The RADIO RAT RACE that we
observed (and joined in) is perfect evidence that proper
coordination cannot be obtained by present liaison methods.
Every effort should be made, for reasons of security and
efficiency, to equip submarines with more effective VHF
equipment. It is believed that this is now becoming available.

1200 Posit 12°46'N, 110°09'E.

Directed FLASHER to work with rescue plane and proceed at
discretion. FLASHER can arrive at scene by dawn tomorrow and
should be able, with plane assistance, to conclude a success-
ful search in record time. I consider that on-the-spot action
was dictated here, in that communication delays, and garbles
were eliminated, and FLASHER was in direct communication with
search plane.

Sent serial two to CTF 71 informing him of FLASHER's mission,
and requesting total bomber restriction.

- 12 -

— page 80 —
CONFIDENTIAL

Subject: USS BLUEBACK (SS326), Report of War Patrol Number Two.
20 March 1945 (Continued)

2000 Hopaco intercept from Pack to south indicated they had sunk
     half of our convoy.

2100 Received message from CTF 71 directing FLASHER to return to
     pack as rescue operations would be carried out by two other
     subs.

     Schedule GEORGE effective.

2300 Submarine attacking northbound contact south of CHIRINH. What
     are we going to do with our hundred plus torps? Our Mark 18's
     are being worn out from being toted around and charged.

21 March 1945 (H)

     All quiet on the Eastern Coast.

     HAWKBILL reported presence of radar search plane.

0000 FLASHER rejoined.

1000-1230 Sighted numerous B-25's and one Catalina. Heard some chatter
          on radio.

          Nothing from PBM search plane so called him hourly thruout
          day, finally going to a call every ½ hour. Also heard
          other subs calling to no avail. This is very disheartening
          as we know there are some ships near here. Was very sur-
          prised to receive an aircraft sighting report at 2200(H),
          via CTF 71 BAKER schedule. The only possible answer is that
          all the search planes had radio trouble, or the operators
          laryngitis, from yesterday's free for all hog-calling contest.

          There are some indications that our contact may have taken to
          the high seas.

1200 Posit 12°01'N, 109°47'E.

2210 Directed BLUEFIN to sweep 120 miles to seaward on MPR and
     SJ search. BLUEBACK will make a 65 mile sweep starting 2½
     hours later. This will give us fair coverage for the night,
     with three boats at coastal points.

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— page 81 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS BLUEBACK (SS326), Report of War Patrol Number Two.
22 March 1945 (H)

Schedule GEORGE.

Worked search plane with him circling us at 7000 yards. Plane
could receive only on VHF and transmit only on wopaco. Plane
complained of poor quality of this equipment. We are inclined
to agree with him after 10 days of concentrated attempted two-
way communications.

0716 Sighted three-masted sailing vessel about 11 miles off the
     beach. Headed for him. He attempted to gain the weather gauge
     on me but was unable to outsail my extra 3-ton.

0840 Opened fire. 1000 yards.

0842 Target exploded and sank. Due to proximity to beach (6 miles)
     and possibility of presence of enemy submarines did not desire
     to stop and pick up any of the 4 survivors.

     Since entering this area the pack has sighted large numbers
     of southbound 1-, 2-, and 3-masted sailing vessels. HAWKBILL
     stopped and boarded two and found them with sand ballast. No
     fish. My best guess is that these are on the first leg of an
     evacuation mission and in the near future the traffic move-
     ment will be northward.

     My two sailboat targets were well off the usual lane and in
     position to report (and report) movements of the pack on
     offshore surface cruising stations. Target upon
     exploding was covered with a heavy black smoke pall 150
     feet high and 200 feet long. The explosion broke its back
     and it sank in a few seconds. Wonder if this "fisherman"
     was a dynamiter?

0846 Aircraft on SD. No IFF.

0850 Aircraft identified as PBY search plane.

1055 Sighted PBY. No IFF.

1200 Posit 12°50'N, 109°16'E.

1315 BLACKFIN rejoined. Search negative.

- 14 -

— page 83 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS BLUEBACK (SS326), Report of War Patrol Number Two.
23 March 1945 (Continued)

As no contacts received from plane decided to conduct A/S
patrol submerged.

1050 Dive.
1200 Posit 13°37'N, 109°54'E.
1930 Surface. Other than a few trial dives this is our first
lengthy period submerged during the patrol.

24 March 1945 (H)

Schedule FOX modified.

Directed HAWKBILL to take charge of FLASHER and assist in
search at southern edge of area in compliance CTF 71 serial 21.

A.M. worked search plan. No contacts.

1200 Posit 13°35'N, 109°54'E.
1315 AFR contact 170 ms which in short time faded out. Believe
this is U.S. plane.

Search plane has nothing for us (Relay thru COML.).

1929 Surfaced.

HAWKBILL and FLASHER reported search for downed aviators
negative. Both left pack, departed area, and proceeded to
refit bases.

BLACKFIN reported sinking another drifting mine and was
assigned station ABLE - one off VARELLA for tomorrow.

25 March 1945 (H)

Schedule ABLE.

0400 BERGALL came alongside and transferred Pilot and Navigator
of downed B-29. The other two men recovered from raft (on the
15th) were injured and could not safely be transferred.

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— page 84 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS BLUEBACK (SS326), Report of War Patrol Number Two.
25 March 1945 (Continued)

      Assigned BERGALL to schedule ABLE, station 2.

0930 Rendezvoused with BLENNY. Transferred Aviation personnel FFT
      SUBIC and received 1 modulation network for our sick SJ radar
      and 41 rounds of 5" ammunition. Transfer was accomplished
      without undue difficulty in spite of the high seas running.
      Used aviation type 7-man rubber boat and kept some nearly
      astern, maneuvering to keep distance.

      This equipment received certainly is appreciated by BLUEBACK,
      many thanks to Comdr. HAZZARD.

      From a study of Patrol reports and my own previous experience
      with SJ radar it would seem to be advisable to increase from
      one to two the on board spare allowance of this modulation
      network.

1200 Posit 12°55'N, 110°20'E.

      Proceeded to station ABLE 3.

1500 Sent BLUEBACK serial 3 concerning suggestions for improvement
      of lifeguard effectiveness. These suggestions are the result
      of lifeguarding for three weeks during which time about four
      planes in the vicinity have ditched and the only report we
      received from aircraft was one which later proved to be false.

26 March 1945 (H)

      Schedule ABLE.

1200 Posit 12°55'N, 110°02'E.

1237 Received PB4Y search plane report of 2 DE's, southbound 70
      miles north.

      Headed for inshore position.

      Contacted BLACKFIN and assigned station. BLACKFIN had just
      decoded message containing lifeguard assignment so was unable
      to join the party.

      - 17 -

— page 88 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS BLUEBACK (SS326), Report of War Patrol Number Two.
28 March 1945 (Continued)

Told BERGALL to relieve BLACKFIN on lifeguard assignment.

BLUEGILL requested assignment to check on transport that he
hit 12 minutes after we attacked. Granted.

In 48 minutes the BLACKFIN, BLUEBACK and BLUEGILL were in in-
timate contact with this convoy. At 1022 we heard BLACKFIN
depth charged which drew several escorts off. At 1058 BLUEBACK
attacked leading destroyer, which apparently made them mad and
drew off some more escorts. Then, at 1110 BLUEGILL waded in
and hit the prime target, an AP which beached, and also ob-
tained a hit on an attacking escort.

This was a real show, one-two punch to break down the opponent's
guard and then the round house swing to the button by BLUEGILL.

At 1400 BERGALL sighted 5 hightailing DD's and DE's, northbound
at VARELLA, all that continued past us, of the eight escorts
we had sighted by BLACKFIN.

This was a rather rough, shallow water party, especially for
the first boat in contact. Cornwolf desires to express his
thanks and recognition to BLACKFIN for the very important
part they played in the final outcome of this epic of the
underseas. This target group was no bunch of sitting ducks
and the shore hugging tactics more than doubled the effective
number of escorts.

Four boats in Pack.

Four boats in contact.

This is the first day we have missed our 0900-1300 lifeguard
watch.

29 March 1945 (H)

Set schedule FOX.

BLUEGILL on special assignment.

BERGALL lifeguarding.

BLACKFIN repairing damage to seaward.

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— page 89 —
C-O-N-F-I-D-E-N-T-I-A-L

Subject:
USS BLUEBACK (SS326), Report of War Patrol Number Two.
29 March 1945 (Continued)

0300 Rendezvoused DASHIN and gave him pack directives, etc. Assigned
     him FOX one. BLUEBACK will patrol other four stations to obtain
     maximum area coverage.

     Told LUEGILL to search for downed plane crew at southern
     edge of area in compliance CTF 71 despatch to LICHFIN.

1030 Search plane reported convoy battle to north of us. Headed
     up to make contact but he was too far north and was headed
     north.

1200 Posit 14°05'N, 109°44'E.

1530 Sent BLUEBACK serial four to CTF 71 reporting actions of 26th
     and 28th. We were feeling pretty low about our lack of luck
     on our shots, but LUEGILL's success cheered us up consider-
     ably. Meanwhile we have gained much valuable seasoning and
     experience. The only shipping that has gotten thru us without
     being attacked consists of three patrol boats and one hospital
     ship.

     LUEGILL reported total demolition of previously hit transport
     with two more torpedo hits. Posit 12-39N, 109-27.5E. C.O.
     estimated AT at 10,000 tons. Pictures were obtained. He also
     conducted inshore surface search for downed aviators, CTF 71
     serial 56, was forced to dive 3 times from aircraft and re-
     ceived three bombs (rough - no damage) on 3rd dive. He seemed
     surprised at these unfriendly gestures as he was all of 3
     miles off the beach just north of CAMRANH. Rendezvoused
     LUEGILL and transferred directives.

30 March 1945 (H)

     Schedule FOX.

     All boats have returned from special missions. Five subs
     formed in scouting line.

0300 Sighted properly illuminated hospital ship passing thru area
     at 14 knots, southbound.

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— page 92 —
C-O-N-F-I-D-E-N-T-I-A-L

Subject: USS BLUEBACK (SS326), Report of War Patrol Number Two.
1 April 1945 (Continued)

0100 (I) Rendezvoused with HAMMERHEAD and received 192 rounds of 40 MM
        ammo and one type 955 vacuum tube for AR receiver.

        Transfer effected by rubber boat in smooth sea. Many thanks
        to Cdr. SMITH for replenishing our magazine.

        Ground developed on SJ 1.ing motor. Pulled fuses.
        Probably result of depth charging on 28th.

        QT training motor generator heated excessively while on
        finishing rate of battery charge.

1200    Posit 13°36'N, 109°54'E.

1300    QT training worm gear quite warm. Our speed 14 knots. Have
        checked entire QT training system and found everything in
        proper order, well lubricated, vented, and ventilated so on
        continuing use of equipment.

1400    Heading for station 4 to work on SJ mast.

1530    Spoke PERGILL.

1605    Received contact report from BLUEGILL of large unidentified
        ship southbound at 15 knots, just off TULO GULM. Believe
        this is hospital ship tracked and reported by another sub
        to north yesterday. However, ordered Peck to investigate and
        attack if not a hospital - took course 210, speed 18.

1915    Sighted target.

1958    Identified ship as large 2-funnel hospital ship when it turned
        on proper illumination. Believe ship TAIYO MARU, 9300
        tons. The Japs are running more hospital ships thru here
        than anything else. This is the third since 6 March.

        Set course to return to station. Night search radar plane
        AR contact 156 mcs.

- 25 -

— page 98 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS BLUEBACK (SS326), Report of War Patrol Number Two.

11 April 1945 (Continued)

0626 Dove for submerged patrol in SANGGAR BAY.

     Sailboats.

     Overhauled master gyro.

1200 Posit 8°10'S, 118°23'E.

1900 Gyro back in commission.

1945 Surfaced.

     Patrol on surface enroute LOMBOK Island.

12 April 1945 (I)

     Patrol on surface enroute LOMBOK Islands.

0130 APR contact 520 mcs.

0430 Exchanged calls with U.S.S. BUGARA.

0633 Submerged off north shore of LOMBOK Island.

1200 Posit 8°12'S, 115°58'E.

2020 Surfaced in LOMBOK STRAIT, 4 engines, 18 knots, making
     transit.

     APR contact 201 mcs.

2054 Radar contact 7,500 yds. Tracking at 6 knots, westerly
     course. Swung right to pass ahead. This is apparently a
     small patrol vessel which we were unable to see at 4700
     yards. No moon. Bright starlight.

2118 Exchanged calls with U.S.S. BREAM.

2320 Slowed to 2 engines.

     Sent BLUEBACK serial seven, requesting mail rendezvous and
     usual reports.

- 31 -

— page 101 —
- USS BLUEBACK (SS326) - War Patrol Number Two - Weather, Tidal Information, Navigational Aids

C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS BLUEBACK (SS326), Report of War Patrol Number Two.

— page 102 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS BLUEBACK (SS326), Report of War Patrol Number Two.

NO. | DATE | POSIT | TYPES | INITILL RANGE | HO. CONTACTED | REMARKS
--- | --- | --- | --- | --- | --- | ---
F. | SHT CONT: | | | | |
1. | 2358(H) | 12-49N | TC | 700 yds. | | Ho opened fire on us
  | 12 March | 110-01E | | | | with small caliber weapons.
2. | 1847(H) | 12-39N | 2 DE's | 10000 | 250 | Missed with
  | 26 March | 109-29E | | yds. | 11 - 12 K. | torpedoes.
3. | 1014(H) | 12-38N | 2 LST's | 12000 | 035 | Missed with
  | 28 March | 109-28E | 8 Escorts | yds. | 14 K. | torpedoes.
4. | 0741(I) | 6-10.5S | 2 Sub | 16000 | 220 | Evaded. Had 3
  | 8 April | 114-30E | chasers | yds. | 12 K. | plane escorts.
  | | | | | Lookout |
5. | 1935(T) | 7-24S | 2 Sub | 13000 | 305 | Evaded. Apparently
  | 9 April | 118-00E | chasers | yds. | 18 K. | Hunter Killer group.
  | | | | | Lookout |

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— page 104 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS BLUEBACK (SS326), Report of War Patrol Number Two.
H. ATTACK DATA (Continued)
Target Attack No. 1 (Continued)

The or the five torpedos were heard to circle over the
boat. A single deep explosion 13 minutes after firing
the first torpedo indicated that at least one torpedo
went out to sea and exploded at the end of its run in deep
water. The run was excessively out of trim and
had been given a normal firing charge. Hard
rudder had been set up to hit the ship with the
and spread used. The one torpedo probably account
for failure to get any hits. Speed of torpedo was
decreased for temperature and torpedo run in
depth setting in accordance with current directives.
Torpedo track was with and across the sea. Went to
deep submergence after firing.

U.S.S. BLUEBACK Torpedo Attack No. 2 Patrol No. 2
TIME: 1015 HOW DATE: 26 March 1945 LAT. 12°30.5'N, LONG. 109°28.5'E

- TARGET DATA - DAMAGE INFLICTED

Description: This was a day periscope attack in clear weather. The
original set-up was on a medium haru hugging the coast
with eight escorts to seaward. A few minutes before
reaching the firing point the target zigzagged away and
steamed between a small island and the mainland. The
escorts continued to seaward of the island and the
point of aim was shifted to a DD who appeared to be
fully alerted by BLACKFIN's approach made a few minutes
earlier. He was searching and zigging with many look-
outs all over the ship. He had turned up the coast in
an attempt to get the haru when it came from behind
the island. However, this gave us an excellent stern
shot on the DD.

Ships Sunk: None.
Ships Damaged or
Probably Sunk: None.
Damage Determined by: None determined.

Target Draft: 6 - 8 feet. Course: 090°T. Speed: 14 knots. Range: 1620 yds.
(at firing)

- 37 -

— page 105 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS BLUEBACK (SS326), Report of War Patrol Number Two.
H. ATTACK DATA (Continued)
Torpedo Attack No. 2 (Continued).

OWN SHL DATA
Speed: 4.5 knots. Course: 340°T. Depth: 60'. Trim angle: 0° (at firing).

Type Attack: The DD target may have made contact just prior to firing.
He steamed down an' sound reported that he had increased
speed to about 205 r.p.m. Only three stern tubes were
available.
No hydraulic power available due to hydraulic system
casualty. The tubes were flooded and outer doors opened
by hand a few minutes early. TDC and track agreed on
data and the solution was checking. We had this DD cold.

| | #7 | #8 | #9 |
|---|---|---|---|
| Tubes fired | #7 | #8 | #9 |
| Track angle | 55° | 55° | 55° |
| Gyro angle | 177° | 173° | 167° |
| Depth set | 2 | 2 | 2 |
| Hit or Miss | Miss | Miss | Miss |
| Erratic | Yes | No | No |
| Mark torpedo | 10-1 | 10-1 | 10-1 |
| Serial no. | 56112 | 57167 | 56263 |
| Mark exploder | 4-7 | 8-5 | 8-5 |
| Serial no. | 17200 | 9926 | 9972 |
| Actuation set | Contact | Contact | Contact |
| Actuation actual | None | None | None |
| Mark warhead | 10-0 | 10-1 | 10-1 |
| Serial no. | 1093 | 2312 | 1720 |
| Explosive | T.N. | T.N. | T.N. |
| Firing interval | --- | 10 sec | 10 sec |
| Type spread | 0° | 3°R | 3°L |
| Sea conditions | 1 | 1 | 1 |
| Overhaul | | | |
| Activity | PEARL | PEARL | PEARL |

Remarks: The first torpedo was seen to broach soon after firing. The
escort immediately turned towards and all torpedoes missed
ahead. Apparently all torpedoes ran hot and straight as
sound heard them running normally on correct bearing. Due
to heavy depth charging thereafter, it is not known if
there were any end of run explosions. Speed of all tor-
pedoes was corrected for torpedo run, temperature and
depth set in accordance with current directives. Torpedo
watch was unable to went to deep submergence upon obser-
ving first torpedo go "skipping thru the tops".

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— page 106 —
C-O-N-F-I-D-E-N-T-I-A-L

Subject: USS BLUEBACK (SS326), Report of War Patrol Number Two.
H. ATTACK DATA. (Continued)

U.S.S. BLUEBACK GUN ATTACK NO. 1 PATROL NO. 2
TIME: 0736 HOW DATE: 12 March 1945 LAT. 13°17'N, LONG. 109°58'E

TARGET DATA - DAMAGE INFLICTED

Sunk: Two-masted sailing vessel, 150 tons (Commanding Officer's best
estimate of size).
Damage Determined By: Saw ship sink.

DETAILS OF ACTION
TYPE GUNS USED TYPE AMMUNITION ROUNDS EXPENDED HITS
1. 5"/25 deck gun 1A Con 65 17
MK 29 Mod 3 Nose fuze
AA Con (A special re- 23 6
port on this ammunition.)
2. 40 MM forward HET 250 Approximately
HEIT 75
3. Twin 20 MM (home- 2 HEI to
made) cigarette 1 HET
dock. 1000 Approximately
4. Single 20 MM, 2 HEI to 25%
forward main deck 1 HET
5. Twin 50 Cal. M.G., 2 AP to 2 Incend.
PT boat type, to 1 Tracer. 600 Approximately
main deck. 15%
6. Twin 50 Cal M.G., 2 AP to 2 Incend.
aircraft type, to 1 Tracer. 350 Approximately
cigarette dock. 10%

Range: Radar contact 9,000 yards. Sighted target 8,000 yards in
haze. Opened fire at 2,600 yards, circling. Closed range
to 550 yards before target sunk. Average range 1,900 yards.
The sea was rough with swells and many white caps, obscuring
the target's hull at the 5" gun's sights about 90% of the
time. After the first four direct hits, the target settled
down by the stern putting out a fire started by 40 MM HEIT
hits. Waves breaking over the guns and crews of the 5",
20 MM, and twin 50 Cal., also added to the difficulty in
hitting the target when it came up on a swell.

- 39 -

— page 111 —
C-O-N-F-I-D-E-N-T-I-A-L

Subject: USS BLUEDACK (SS326), Report of War Patrol Number Two.
J. ANTI-SUBMARINE MEASURES AND EVASION TACTICS (Continued)

2. (Cont'd) The fact became apparent that at least three escorts
were trying to head off our seaward movement. Our tactics were to zig-
zag and change speed and course radically in order to keep the true
bearing of the loudest screws changing and when he cleared, returning
to a seaward course, maintaining a speed of 5 to 8 knots. During this
time we gradually increased our depth to 450 feet. At this depth
slowed to 3 knots and ran silent.

A total of 90 depth charges were dropped in our near vicinity,
in salvos of about seven charges per salvo. Few single charges were
also dropped. Sixty-five of the depth charges were recorded on the
D.C.D.I. No damage was sustained.

JP-1 sound gear was used for evasion (see narrative 29 March).

The Jap initiated a rather intense anti-submarine hunt on the
INDO-CHINA Coast. The following is a chronological summary as seen
from BLUEDACK:

14 March D.C.D.I. reported two enemy submarines patrolling area (to
north).

15 March D.C.D.I. fired on with torpedoes.

18 March C.P.O. reported torpedo fire by submarine (to
north). Lat. 15-34N, Long. 109-27E.

19 March D.C.D.I. in north western J.M.S. reported two periscope
sightings and one torpedo hit on him with dud torpedo.

20 March D.C.D.I. about lat. 12-30N, long. 109-50, reported night
radar aircraft (not attacked).

21 March C.P.O. lat. 11-00N, long. 108-55, sighted one periscope.

21 March C.P.O. saw all kinds of increased enemy submarine activity.

22 March D.C.D.I. lat. 12-25N, long. 109-41E, avoided torpedoes from
submerged submarine.

D.C.D.I. and H.M.C.I.I. reported 156 and 150 mc. radar in
vicinity. This was thought at first to be from aircraft
but in view of above activity and BATFISH optic, these may
have been submarine radars. Armed with to be alert for
the to-be-expected phenomena of gradually increasing
strength of radar signal to saturation, then complete dis-
appearance of signal as would occur if gear was secured
or if submarine dived.

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— page 112 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS BLUEBACK (SS326), Report of War Patrol Number Two.
J. ANTI-SUBMARINE MEASURES AND EVASION TACTICS (Continued)
Chronological summary (Cont'd).

28 March collected about 200 depth charges from 6 convoy escorts.
31 March GUDINA reports, "Night radar submarine operating in this
          area" (just north of us).
          DORFISH reports periscope sighting in area just north of us.

K. MAJOR DEFECTS AND DAMAGE

     HULL AND MACHINERY.

     On March 29, 1945, an explosion occurred between the air flask of
the hydraulic accumulator and the charging manifold for the air side of
the accumulator. The explosion was accompanied by black smoke and
rupturing of the line between the charging manifold and the air flask,
at the air flask nipple. A similar explosion had previously occurred
while the boat was undergoing pre-commissioning tests. In the former
instance the drain plug for the air flask was blown out.

     At the time of the explosion the air flask was in the process of
being bled to check the oil level of the oil seal in the accumu-
lator. The relief valve had just been opened and pressures were
starting to build up. Casualty was accompanied by heat sufficient to
burn the paint off the air flask air line. The relief valve lifted at
the time but was not of sufficient size to relieve the pressure.

     The air flask was recharged and the flask recharged
to 2300 pounds to relieve the relief valve. It was not properly; but as
the pressure was bled down to operating pressure, another explosion
occurred. The relief valve being open was sufficient to relieve the
pressure without causing another rupture of the air line. Air was
circulated through the air flask and out the drain valve to determine
the presence of oil in the flask and none was found. No trace of oil
was present in the air side of the accumulator.

- 45 -

— page 114 —
C-O-N-F-I-D-E-N-T-I-A-L

Subject: USS BLUEDACK (SS326), Report of War Patrol Number Two.
K. MAJOR DEFECTS AND DAMAGE (Continued)

— page 115 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS BLUERACK (SS326), Report of War Patrol Number Two.
K. MAJOR DEFECTS AND DAMAGE (Continued)

HULL AND MACHINERY (Continued)

ENGINEERING CASUALTIES (Continued).

All the telegraph systems aboard have, in succession, given trouble
due to erratic motion. Complete disassembly of the selsyn units has
shown the ball bearings to be dry of lubricant and corroded in the races.
Upon cleaning and lubricating, no further trouble has been encountered.
The ball bearing is part number S.E.E. 38 in transmitter generator, type
"A", and indicator motor, type "H", Henschel drawing number 15-201,
DuShips Plan No. 11T2659L Alt. 0, piece No. 4, manufactured by HENSCHEL
Corporation, Amesbury, Mass.

Exhaust pipe between the outboard exhaust valve and muffler on #3
and #4 main engine burned through allowing exhaust gases and sparks to
impinge on the superstructure plating. This burning occurs near top
outboard of bond toward muffler. This casualty has shown to be
routine in sister ships of this class.

A casualty report, reference our Patrol #1, described the
Underwater Log System, Type F-25 (manufactured by Pitometer Log
Corporation), as being unsatisfactory for accurate fire control
and navigation due to repeated failures of the control unit and the
pump assembly. This conclusion is further strengthened by additional
failures in the system.

The selsyn system became inoperative at 17 knots and failed to
move despite large speed changes. The cause was found to be in the
gear train driven by the follow-up motor and regulating the transtat.
The first gear driven by follow-up motor is of fiber or plastic con-
struction and had become warped due to impregnation with gear oil.
This warping had caused the gear teeth to bind sufficiently to stop all
rotation of the follow-up motor and consequently all movement of the
rotating brush arm of the transtat. It is recommended that this gear
be made of stronger material or similar metal to the rest of the train.

The C.O. is still of the opinion that the National Defense
Research Council could be most profitably employed in a study and
development of a more satisfactory and reliable instrument for this
vital application.

- 48 -

— page 116 —
CONFIDENTIAL

Subject: USS BLUEBACK (SS326), Report of War Patrol Number Two.
Wolf Pack Communications
Wolf Pack Communications

— page 118 —
C-O-N-F-I-D-E-N-T-I-A-L

Subject: USS BLUEBACK (SS326), Report of War Patrol Number Two.
II. RADAR
---

The SD-5 performance was satisfactory. The only trouble encountered
was in the first days of the patrol, when the transmitter required tuning
and replacement of several tubes and R-941 and J-905. Planes were picked
up out to 42 miles, though low flying planes came in to 4 miles be-
fore they were picked up. Inability to pick up low flying planes contin-
ued to be the chief drawback in the use of this gear. One second keying
proved satisfactory.

The SJ radar offered no maintenance difficulties and gave good
results when used. It was used during one attack, but unfortunately
sharp echoes from rain squalls obscured the targets to some extent.
It was also of great value for navigation when patrolling submerged
close to shore. At times it was used in place of the SJ for searching
when surfaced. Poor bearing resolution is the chief drawback to the
use of this gear.

SJ-1 system performance was average, though much trouble was
encountered in keeping the transmitter-receiver properly tuned, and
with oil leaking from modulation networks, two being replaced.

In keeping the sensitivity satisfactory, two local oscillators
(726A), four T-R tubes (721A), a new crystal, and new I.F. tubes were
used. Apparently the spare T-R tubes were of very poor quality. The
OBU-1 Echo Box was of great assistance in keeping the sensitivity at
a high level.

It is believed that overheating is the cause of the leaking of
the modulation networks, as in each case (and in one previous case),
the leaking was detected after 100 to 150 hours continuous operation.
The transmitter is located in the after end of the conning tower,
where ventilation is poor, and is surrounded by other gear. It is
believed that a fan playing on the unit will help prevent overheating.
The location is also poor in that when it is removed for maintenance,
it must be worked on in front of the T.D.C. and near the attack peri-
scope, so that it would greatly hamper an approach.

Near the end of the patrol, the lobe switching motor was found
to have a 110 volt ground, though it worked properly. While checking
the hood, the polystyrene window was replaced in an inverted position,
which greatly increased standing wave ratio and decreased sensitivity,
which were restored to normal when it was properly installed.

- 51 -

— page 119 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS LUERLICK (SS326), Report of War Patrol Number Two.
II. RADAR (Continued)

Other troubles and remedies were:

1. Precision Sweep Self Triggering. Removal of range pulse cable
   made no difference. C-47 in Range indicator was found shorted.

2. No High Voltage or High Voltage current. Fuses and power out-
   put from Main Control Unit all right. Terminal 25 in the
   junction box was found to be shorted across the bakelite
   insulator, which was completely carbonized.

3. Sweep on Indicator when switching from 30 to 70 not triggering
   properly. Replaced pre-knock tub in Selector Unit.

4. Loss of step. Replaced open range pulse cable.

Some annoyance was caused by pips on birds and unidentified steady
pips at ranges of 1000 to 4000 yards. At night, these close contacts
are most disconcerting.

The SJ was used 24 hours a day - for search, navigation and
communication. Second sweep line echoes were picked up at ranges up
to 160,000 yards. In respect to use of SJ for communication, it is
hoped that a method of transmitting speech with it can be devised for
use in wolf packs, and that while J keying is used, that a standard
procedure for recognition and transmission of messages be adopted
throughout the submarine force. A recommended procedure is as follows:

SUGGESTED PROCEDURE USED FOR KEYING SJ RADAR

1. The station wishing to call another boat beams his radar on
   the called station, with high voltage on. The called station,
   on seeing interference from the same bearing on two consecutive
   sweeps, beams his radar on the station calling him. Then the
   calling station starts keying, the called station should secure
   his transmitter and turn his receiver gain low for boat recep-
   tion on phones.

2. All operators should be trained to recognize interference from
   other submarines as soon as it appears.

- 52 -

— page 121 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS BLUEBACK (SS326), Report of War Patrol Number Two.

N. SOUND GEAR AND SOUND CONDITIONS (Continued)

The QB rotating in the lowered position was used as a torpedo
detector during surface cruising. A segment of the upper flange was
built up to close a micro-switch when the head was training from
160° - 200°. This micro-switch in turn shorted the two leads to the
head, thus blanking out sound of own ship's screws whenever the head
trained aft. A toggle switch was installed to bypass the micro-switch
whenever normal operation of the QB was desired. This head is equipped
with experimental slip rings which allow continuous unidirectional
rotation at about 4½ r.p.m. Considerable heating of the worm drive
gear and motor generator were noted.

O. DENSITY LAYERS

Density layers were noted as follows:

11 March Latitude 14-08N 100 - 300 feet 12° Negative.
         Longitude 110-10E

26 March Latitude 14-52N 100 - 300 feet 5° Negative.
         Longitude 109-35E

28 March Latitude 14-08N 150 - 350 feet 8° Negative.
         Longitude 109-40E

P. HEALTH, FOOD, AND HABITABILITY

The following men were admitted to the sick list during the patrol:

Licut. (jg) Judson Dean HUGGINS, 202205, USN.
Admitted: 12 March 1945. Diagnosis: Malaria, Quotidian #1004.
Sick days: nine (9).

KEATING, James Patrick, 300 30 23, MM3c, USN.
Admitted: 1 April 1945. Diagnosis: Foreign body, Traumatic,
Left eye #2528, Key letter "M". Sick days: two (2).

PICKARD, Lewis Watson, 407 12 22, FCS2c, V-6, USNR.
Admitted: 15 March 1945, for record purposes only.
Diagnosis: Herpes Zoster #1931. Sick days: none (0).

- 54 -

— page 122 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS BLUEBACK (SS326), Report of War Patrol Number Two.
E. HEALTH, FOOD, AND HABITABILITY (Continued)

SEGARS, Jerry Loulena, 841 17 91, EM3c, USN-I.
Admitted: 12 March 1945, for record purposes only.
Diagnosis: Rupture Traumatic. Right ear drum, #2548, Key
letter "K". Sick days: none (0).

SHAW, Harrison Druie, 295 64 56, TM1c, USN.
Admitted: 14 March 1945. Diagnosis: WOUND LACERATED, Head, #2563,
Key letter "M". Specialty letter "S". Sick days: fourteen (14).

The health of the crew in general was good.

The food aboard this vessel is excellent in quality and
sufficient in quantity.

Habitability aboard this vessel is good. Adequate water supplies
were available during the patrol.

Q. PERSONNEL

a. Number of men detached after previous patrol . . . . . 5
b. Number of men on board during patrol 80
c. Number of men qualified at start of patrol . . . . . . 54
d. Number of men qualified at end of patrol . . . . . . . 77
e. Number of unqualified men making their first patrol . . 4

The state of training and performance of duty under combat condi-
tions of both officers and enlisted personnel is considered to be
excellent.

Since commissioning, this vessel has transferred 20 men and
received 20 men.

R. MILES STEAMED - FUEL USED

Subic Bay to area #1 3/4 - 3/6 617 miles 8240 gallons.
In area #1 3/6 - 4/3 7677 miles 61613 gallons.
Enroute area #2 4/3 - 4/7 1335 miles 16158 gallons.
In area #2 4/7 - 4/12 1186 miles 11001 gallons.
Ft. Flag to Fremantle 4/12 - 4/17 1369 miles 18200 gallons.
                                     11834 miles 115212 gallons

- 55 -

— page 124 —
CONFIDENTIAL
Subject: USS BLUEBACK (SS326), Report of War Patrol Number Two.
U. RADAR COUNTERMEASURES (Continued)

Interception of Enemy Radar Transmissions

1. Report #1. Date: 13 March 1945. Area covered on this mission:
   C-3, from 6 March to 3 April. Location of enemy radar: unknown.
   Intercept equipment: APR-1, Ser. No. 902, with TH-1, Ser. No. 906.
   Lobo switching was not used. Sweep rate was erratic. Use of
   enemy radar: unknown.
   a. Frequency: 69 mcs.
   b. PRF 500 pps.
   c. Pulse Width: 60 m.sec. How measured: STR, Ser. No. 115.
   d. Dial reading: 14.2 How measured: STR, Ser. No. 115.
   e. Sketch Pulse:
      [Image of a pulse waveform]
   Narrative: Picked up at 1615(H), Lat. 12°50'N, Long. 110°03'E.
             Swept at erratic times and strengths, reaching sat-
             uration strength as a maximum. Lost about 1815(H).

2. Report #2. Date: 20 March 1945. Area covered on this mission:
   C-3, from 6 March to 3 April. Location of enemy radar: unknown.
   Intercept equipment: APR-1, Ser. No. 902, with TH-2, Ser. No. 204.
   Lobo switching was used. This is determined by appearance of
   pulse. Sweep rate was steady on. Use of enemy radar: thought
   to be surface search. Evidence for this conclusion: Strength
   of signal. Action of enemy radar: Steady for several minutes
   then lost.
   a. Frequency: 179 mcs.
   b. PRF 170 p.p.s. How measured: STR.
   c. Pulse width: 7½ m.sec. How measured: STR.
   d. Dial reading: 16.2
   e. Sketch pulse:
      [Image of a pulse waveform]
   Narrative: Picked up at 0945(H), Lat. 13°12'N, Long. 110°00'E.
             Lost twenty minutes later. Had flight of U.S. planes
             overhead at this time. Same signal was picked up
             at 1315(H), 24 March, Lat. 13°46'N, Long. 109°50'E.
             It was sweeping erratically for 20 minutes before a
             routine submergence. Picked up again 27 March at
             12°44'N, 110°32'E, for fifteen minutes, steady at
             about half saturation.

- 57 -

— page 125 —
CONFIDENTIAL
Subject: USS BLUEBACK (SS326). Report of War Patrol Number Two.
U. RADAR COUNTERMEASURES (Continued)

Interception of Enemy Radar Transmissions (Continued)

3. Report #3. Date: 30 March 1945. Area covered on this mission:
   C-3, from 6 March to 3 April. Location of enemy radar: airborne.
   Intercept equipment: APR-1, Ser. No. 902, with TN-2, Ser. No. 884.
   Lobe switching was not used. Sweep rate was erratic. At times
   keyed sharply. Use of enemy radar: surface search. Evidence
   for this conclusion: Keyed strong signal sharply.
   a. FREQUENCY: 156 mcs.
   b. PRF: 1000 p.p.s. How measured: SPR.
   c. PULSE WIDTH: 8 m.sec.
   d. Dial Readings: 14.2
   e. Sketch pulse:
      [Drawing of a pulse, resembling a bell curve]

   Narrative: First seen for half an hour 30 March at 0500(H),
              Lat. 13°30'N, Long. 110°03'E. Again observed at
              13°34'N, 109°56'E at 1935(H), 31 March. Neither
              signal was strong. On 1 April, was picked up at
              2020(I), Lat. 12°48'N, Long. 110°02'E. Was weak
              at first, and increased to strong saturation. Then
              at saturation, it was keyed on and off quickly. At
              times it was steady for a few seconds.

4. Report #4. Date: 7 April 1945. Area covered on this mission:
   enroute Fremantle. Location of enemy radar: unknown. Inter-
   cept equipment: APR-1, Ser. No. 902, with TN-2, Ser. No. 884.
   Lobe switching was not used. Sweep rate was not determined.
   Use of enemy radar: not known.
   a. FREQUENCY: 205 mcs.             e. Sketch pulse:
   b. PRF: Not determined.
   c. Pulse width: 8 m.sec.
   d. Dial reading: 18.3
      [Drawing of a pulse, resembling a bell curve]

   Narrative: Seen at 2105(I), Lat. 5°17'S, Long. 112°42'E.
              Swept through twice, very weak.

- 58 -

— page 126 —
CONFIDENTIAL
Subject: USS BLUEBACK (SS326), Report of War Patrol Number Two.
U. RADAR COUNTERMEASURES (Continued)

Interception of Enemy Radar Transmissions (Continued)

5. Report #5. Date: 12 April 1945. Area covered on this mission:
   Java Sea, enroute Fremantle, from area C-3. Location of enemy
   radar: Unknown. Intercept equipment: TM-3. Lobe switching was
   used. Polarization unknown. Determined by observed on SPA. Sweep
   rate was erratic. Enemy radar was thought to be used for
   surface search. Evidence for this conclusion: apparent lobe
   switching to saturation strength.
   a. Frequency: 522. Sketch pulse:
   b. PRF: 300
   c. Pulse width: 3 m.sec.
   d. Dial readings: 13.8.
   Narrative: Picked up at 0230(I), Lat. 8°02'S, Long. 117°11'E.
              Searching erratically, reaching saturation and
              fading out in about 20 minutes.

6. Report #6. Date: 12 April 1945. Area covered on this mission:
   Java Sea, enroute Fremantle, from area C-3. Location of enemy
   radar: landbased. Intercept equipment: TM-2. Lobe switching
   was not used. Polarization of enemy signal was not determined.
   Sweep rate was alternating sweeps of 1 and 5½ minutes. Enemy
   radar was believed to have been used for surface search.
   Evidence for this conclusion: consistently sweeping and strength
   of signal. Action of enemy radar: Believed to be searching
   sectors.
   a. Frequency: 201
   b. PRF: 1000 How measured: SPA
   c. Pulse width: 5 m.sec.
   d. Dial readings: 18.1
   e. Sketch pulse: [drawing of a rounded pulse]
   Narrative: Picked up at 2140(I), Lat. 8°38'S, Long. 115°46'E;
              strong saturation for 15 seconds at 2210(I), the
              strength having built up slowly. Began weakening
              after leaving Lombok Straits, decreasing slowly in
              strength until lost at a range of 40 miles from
              land.

- 59 -

— page 127 —
CONFIDENTIAL

Subject: USS BLUEBACK (SS326), Report of War Patrol Number Two.
U. RADAR COUNTERMEASURES (Continued)
Interception of Enemy Radar Transmissions (Continued)

5. Report #5. Date: 12 April 1945. Area covered on this mission:
   Java Sea, enroute Fremantle, from area C-3. Location of enemy
   radar: Unknown. Intercept equipment: TN-3. Lobe switching was
   used. Rate unknown. Determined by observed on SPA. Sweep
   rate was erratic. Enemy radar was thought to be used for
   surface search. Evidence for this conclusion: apparent lobe
   switching to saturation strength.
   a. Frequency: 522. Sketch pulse:
   b. PRF: 300
   c. Pulse width: 3 m.sec.
   d. Dial readings: 13.8.

   Narrative: Picked up at 0230(I), Lat. 8°02'S, Long. 117°11'E.
              Searching erratically, reaching saturation and
              fading out in about 20 minutes.

6. Report #6. Date: 12 April 1945. Area covered on this mission:
   Java Sea, enroute Fremantle, from area C-3. Location of enemy
   radar: Landbased. Intercept equipment: TN-2. Lobe switching
   was not used. Polarization of enemy signal was not determined.
   Sweep rate was alternating sweeps of 1 and 5½ minutes. Enemy
   radar was believed to have been used for surface search.
   Evidence for this conclusion: Consistently sweeping and strength
   of signal. Action of enemy radar: Believed to be searching
   sectors.
   a. Frequency: 201
   b. PRF: 1000 How measured: SPA
   c. Pulse width: 5 m.sec.
   d. Dial readings: 18.1
   e. Sketch pulse:

   Narrative: Picked up at 2140(I), Lat. 8°38'S, Long. 115°46'E;
              strong saturation for 15 seconds at 2210(I), the
              strength having built up slowly. Began weakening
              after leaving Lombok Straits, decreasing slowly in
              strength until lost at a range of 40 miles from
              land.

- 59 -

— page 130 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS BLUEBACK (SS326), Report of her Patrol Number Two.
V. REMARKS (Continued)
Chronological summary of contacts and actions (Continued)

29 March B.S.H. reported for duty.

     BLUEGILL demolished previous mentioned beachod up with two
     more hits. BLUEGILL conducted close inshore search for
     downed aviators reported at southern extremity of area.
     Received 3 close rough b bs. No damage.

30 March BLUEBACK sighted southbound hospital ship passing thru area
     properly illuminated.

     BLUEBACK sank 3 southbound sailboats interfering with 1st
     offshore surface cruising station.

     BLACKFIN directed to depart area because of extent of damage
     received on 28th.

1 April BLUEGILL sighted very large southbound ship. Ordered pack to
     pursue. At sunset target illuminated hospital ship markings.
     Discontinued approach.

     Daily radio lifeguard watch and PBY search plane was handled by
     BLUEBACK assisted as necessary by other boats of pack.

     BLACKFIN sank two drifting mines.

     It is believed that the only enemy shipping that passed thru this
     blockaded area without being attacked consisted of:

     3 PC type patrol vessels.
     3 Hospital ships.
     Hundreds of southbound sailing vessels.

- 62 -
6 0734

— page 131 —
FC5-30/A16-3
Serial: 07

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

FIRST ENDORSEMENT to
U.S.S. BLUEBACK (SS326)
Report of Second War
Patrol.

From:
To :
Via :

Subject:

1.
Commander M. K. Clementson was of forty five days duration of which thirty
three days were spent in the area. Patrol was conducted off Indo China coast
with a short patrol in Java Sea.

Torpedo attack number 1, on 26 March, was a day periscope at-
tack on two DE's using ST ranges and tracking by sound. Heavy rain squalls
obstructed view of targets. Five MK 18-1 torpedoes were fired for 300%
coverage, with range 3,000 yards, depth set 2 feet, and small gyro angles on
a 110° port track. All torpedoes missed, two being circular runs over
BLUEBACK. Misses are accredited to the long range for this type torpedo and
to the shallow depth setting. Speed and depth performances of this torpedo
are not fully known when using extremely shallow depth settings.

Torpedo attack number 2, on 28 March, was a day periscope at-
tack on a two-ship convoy with six escorts. Three MK 18-1 stern torpedoes
were fired at a leading DD with run of 1000 yards, small gyro angles, 55°
port track, depth set at 2 feet. The first torpedo was seen to broach after
firing. The DD was alerted, turned towards and remaining torpedoes missed.
BLUEBACK was heavily depth charged by this DD. During this coordinated
attack the BLUEGILL and BLUEBACK drew off the escorts and the BLUEGILL's way
was cleared for a successful attack on an AP and escort.

Gun attack number 1, on 12 March, was on a large two-masted
southbound sailing vessel, opening range 2600 yards. Numerous hits were ob-
tained from all caliber guns and target was sunk in 13 minutes.

Gun attack number 2 on 22 March was on a three-masted south-
bound sailing vessel, opening range 1850 yards. Six 5" hits were obtained,
target exploded and sank in 2 minutes.

Gun attack number 3, on 30 March, was on three southbound
sailing vessels. Twelve 5" hits and 45 40mm hits sank these three targets.

- 1 -

SUBMARINE SQUADRON THIRTY

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

The Commander Submarine Squadron THIRTY.
The Commander in Chief, United States Fleet.
(1) The Commander Submarines, SEVENTH FLEET.
(2) The Commander SEVENTH FLEET.

U.S.S. BLUEBACK (SS326) - Report of Second War Patrol.

— page 132 —
This looks like a request to transcribe the text from the provided image of a WWII submarine patrol report. I will go through the image section by section and transcribe all visible text, distinguishing between typed and handwritten elements as requested.

Here's the transcription:

FC5-30/A16-3
Serial: 07
C-O-N-F-I-D-E-N-T-I-A-L

SUBMARINE SQUADRON THIRTY

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

FIRST ENDORSEMENT to
U.S.S. BLUEBACK (SS326)
Report of Second War
Patrol.

Subject: U.S.S. BLUEBACK (SS326) - Report of second war patrol.

— page 133 —
FE24-71/A16-3
Serial 0805
C-O-N-F-I-D-E-N-T-I-A-L

SECOND ENDORSEMENT to:
ComSubPac Conf. Ltr. A16-3
Serial 04-45, dated 17 April,
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. BLUEBACK (SS326) - Report of Second War
Patrol - Comment on.

1. The Second War Patrol of the BLUEBACK, under the
command of Commander M. K. CLEMENTSON, U.S.N., was conducted in
the areas off the coast of INDO-CHINA and in the JAVA SEA. The
Commanding Officer of the BLUEBACK acted as (OTC) of a group of
submarines which varied in number from three to six, and which
established an effective blockade of the coast of INDO-CHINA in
the area off CAPE VARELLA. The group was made up of BLUEBACK,
BLUEGILL, HAWKBILL, BLACKFIN and, upon occasion, FLASHER, BASHAN
and BLUEGILL.

2. The torpedo and gun attacks are carefully analyzed
in the First Endorsement and the conclusions expressed in the
premises are fully concurred in.

3. Commander CLEMENTSON's report is particularly well
written, and the observations and opinions expressed are worthy of
study. Under the heading "V" (Remarks) is a clear and comprehensive
resume of the activities of the BLUEBACK Coordinated Group. In this
connection, the successful attack made on 28 March by BLACKFIN,
BLUEBACK and BLUEGILL is worthy of special note. On this morning
the enemy attempted to move a two ship convoy up the INDO-CHINA
coast in the area of HON DOI ISLAND. The convoy was protected by
six escorts, plus air cover, and it proceeded in shallow water hug-
ging every bay and indentation of the coast in its attempt to get
through. BLACKFIN made the first attack, but after penetrating the
outer escort screen he was detected by the inner screen at 1023, and
several escorts detached themselves and commenced a counter-attack.
At 1058, BLUEBACK penetrated the formation and fired three torpedoes
which missed a large DD escort. Several more escorts were detached
to engage BLUEBACK. At 1110, BLUEGILL attacked the convoy, tempora-
rily weakened by BLACKFIN and BLUEBACK efforts, and succeeded in
beaching a fleet oiler (later destroyed by a landing party) and
damaging a DD. It is presumably most discouraging to the enemy to

- 1 -
[STAMP: 6 0734]
UNITED STATES NAVY
14/hr
4 May 1945.

— page 134 —
FE24-71/A16-3
Serial 0805
C-O-N-F-I-D-E-N-T-I-A-L
SECOND ENDORSEMENT to:
USS BLUEBACK Conf. Ltr. A16-3
Serial 04-45, dated 17 April,
1945. Report of Second War
Patrol.

Subject: U.S.S. BLUEBACK (SS326) - Report of Second War
Patrol - Comment on.

— page 135 —
FE24-71/A16-3
Serial 0834
[STAMP: C-O-N-F-I-D-E-N-T-I-A-L]
UNITED STATES NAVY
10 May 1945
14/hn

SECOND ENDORSEMENT (Corrected)
USS BLUEBACK Conf. Ltr. A16-3
Serial 0445, dated 17 April,
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. BLUEBACK (SS326) - Report of Second War
Patrol - Comment on.

1. The Second War Patrol of the BLUEBACK, under the
command of Commander M. K. CLEMENTSON, U.S.N., was conducted in
the areas off the coast of INDO-CHINA, and in the JAVA SEA. The
Commanding Officer of the BLUEBACK acted as (OTC) of a group of
submarines which varied in number from three to six, and which
established an effective blockade of the coast of INDO-CHINA in
the area off CAPE VARELLA. The group was made up of BLUEBACK,
BERGALL, HAWKBILL, BLACKFIN and, upon occasion, FLASHER, BASHAN
and BLUEGILL.

2. The torpedo and gun attacks are carefully analyzed
in the First Endorsement and the conclusions expressed in the
premises are fully concurred in.

3. Commander CLEMENTSON'S report is particularly well
written, and the observations and opinions expressed are worthy of
study. Under the heading "V" (Remarks) is a clear and comprehensive
resume of the activities of the BLUEBACK Coordinated Group. In this
connection, the successful attack made on 28 March by BLACKFIN,
BLUEBACK and BLUEGILL is worthy of special note. On this morning
the enemy attempted to move a two ship convoy up the INDO-CHINA
coast in the area of HON DOI ISLAND. The convoy was protected by
six escorts, plus air cover, and it proceeded in shallow water hug-
ging every bay and indentation of the coast in its attempt to get
through. BLACKFIN made the first attack, but after penetrating the
outer escort screen he was detected by the inner screen at 1023, and
several escorts detached themselves and commenced a counter-attack.
At 1058, BLUEBACK penetrated the formation and fired three torpedoes
which missed a large DD escort. Several more escorts were detached
to engage BLUEBACK. At 1110, BLUEGILL attacked the convoy, tempera-
rily weakened by BLACKFIN and BLUEBACK efforts, and succeeded in
beaching a fleet oiler (later destroyed by a landing party) and
damaging a DD. It is presumably most discouraging to the enemy to

66620 9 - 1 -

— page 137 —
F24-71/A16-3                                                              UNIT D ST.TES NAVY                                                              14/hn
Serial 0854                                                                                                                                                             10 May 1945
[HANDWRITTEN: C-O-N-F-I-D-E-N-T-I-A-L]
CONFIDENTIAL
CONFIDENTIAL
CONFIDENTIAL
From: ComSubPac
To: USS BLUEBACK (SS326)
Info: ComSubPac Conf. Ltr. A16-3
Serial 04-45, dated 17 April
1945, Report of Second War
Patrol.

Subject: U.S.S. BLUEBACK (SS326) - Report of Second War
Patrol - Comment on.

— page 138 —
[HANDWRITTEN: 171]
UNITED STATES FLEET
COMMANDER SEVENTH FLEET
[STAMP: Reg. No. [HANDWRITTEN: F-789]]
[STAMP: R. S. No. [HANDWRITTEN: 6 02933]]

A16-3(F-3-4/whr)
Serial 03633

6 JUN 1945

CONFIDENTIAL

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

Subject: U.S.S. BLUEBACK (SS326) - Report of Second War
Patrol.

Enclosure: (A) Corrected copy of ComSubs7thFlt Second End.
on USS BLUEBACK Conf. Ltr., serial 04-45,
dated 17 April 1945.

1. Enclosure (A) is forwarded herewith.

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

— page 139 —
A16-3(8)(F-3-4/bc)
Serial: [HANDWRITTEN: 03084]

UNITED STATES FLEET
COMMANDER SEVENTH FLEET

[HANDWRITTEN: 31]
Reg. No. [HANDWRITTEN: F-457]
R. S. No. [HANDWRITTEN: 6 0224]

CONFIDENTIAL

[STAMP: 25 MAY 1945]

THIRD ENDORSEMENT on:
CO USS BLUEBACK Conf. ltr.
A16-3, serial 04-45 dated
17 April 1945. Report of
Second War Patrol.

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

Subject: U.S.S. BLUEBACK (SS326) - Report of Second
War Patrol.

1. Forwarded.

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

— page 140 —
[HANDWRITTEN: 1ST COPY]

SS326/A16-3
Serial ( 017 )
[STAMP: DECLASSIFIED] A-L

U.S.S. BLUEBACK (SS326)
Care of Fleet Post Office
San Francisco, California

Bn.

21 July 1945.

From: The Commanding Officer.
To : The Commander-in-Chief, UNITED STATES FLEET.
Via : Official Channels.

Subject: U.S.S. BLUEBACK (SS326), Report of War Patrol Number THREE.

Enclosures: (A) Subject Report.
(B) Track Chart.

1. Enclosure (A), covering the third war patrol of this vessel
conducted in the JAVA SEA during the period from 12 May 1945 to 20 July
1945, is forwarded herewith.

[SIGNATURE: M. K. Clementson.]
M. K. CLEMENTSON.
[STAMP: DECLASSIFIED]

[STAMP: DECLASSIFIED ART. 0445, OPNAVINST 5510.1C
BY OP-09B9C DATE 8/24/72]

— page 145 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS BLUEBACK (SS326), Report of War Patrol Number THREE.
13 May 1945 (I)

Surface cruising enroute area.
Conducting drills.
1200 Posit 29°18.2'S, 113°18.8'E.

14 May 1945 (I)

1200 Posit 24°16.2'S, 112°30.8'E.

Drills enroute area.
Bow planes chatter severely on being rigged out.

15 May 1945 (I)

1200 Posit 19°48.5'S, 113°20'E.

Drills enroute area.
Testing Army Panoramic sight moved from forward 40mm to after 40mm
to provide adjustable sighting mechanism instead of the unsuitable
fixed M open sight installed.

16 May 1945 (I)

Drills enroute area.
Training 40mm crews in spotting themselves on point-of-aim target.
Results are very encouraging. With a properly designed sighting
mechanism, the 40mm gun should get good hits at 3000 yards instead
of the presently fairly effective 2000 yards.
(No. 1 40mm has the Pearl Harbor adjustable open sights).
1200 Posit 14°49'S, 114°53'E.

17 May 1945 (I)

1200 Posit 9°55.5'S, 116°03'E.

1500 35 miles south of LOMBOK Strait, submerged, bow plane hydraulic rigg-
ing Waterbury gear sounds as though it surely must be ripped from its
mountings and be thrown the length of the boat. Checks reveal no
cause for this condition.

2400 Entered LOMBOK Strait.

— page 148 —
C-C-N-F-I-D-E-N-T-I-A-L
Subject:
USS BLUEBACK (SS326), Report of War Patrol Number THREE.
21 May 1945 (?) (Continued)

This obvious escort can be seen clearly from bridge at 7000yards and
by his alertness (see A/S measures) and maximum speed of 18 knots was
identified as PC-13 class who chased us, east of here, last month.
At that time I could have used some star shells to cool him off, now
looks like a good opportunity to hold a little 5" gun pointer drill.

2247 Stopped, let him close range. (Gun Action No. 1).

2255 Range 5700 - 1st shot out. Third shot a hit! He is cooled off and
turning away, range 4100.

2259 'Target shooting some small explosive tracer bullets our way.

2302 19th shot out - possible MK 32 fuse hit - some other distant joker is
throwing some 3" or 4" at us. Throw some at him. Ahead flank - cut
in cold diesel oil to engine exhaust headers and laid heavy low-hanging
dense white smoke screen, (Clem-alt #501) retired gracefully behind
same, then opened range, which really wasn't necessary as our late
opponent had the same idea heading southwest at 18 knots. Some fair
sized shells observed to explode on contact with the water in the
smoke screen about 1000 yards from us. The smoke screen may have given
the Japs the idea that they damaged us. Sure wish the CAVALLA was
around tonight instead of last night, we could have had a nice party.

Perhaps #1 target is going to join #2.

Anticipating manifestations of general Jap irritation for my unortho-
dox roughing up of A/S vessels, such as air assistance and other A/S
vessels, decided to proceed north around BAWEAN Island for possible
crack at the "convoy" after they had settled down. (The two other
ships sighted initially were smaller than the escort!).

Set course 060° T, 3 engines.

2317 Changed course to 040° T.

22 May 1945 (I)

0000 Course 040° T, 16 knots, 3 engines.

0050 SJ contact 225° T, 10,000 yards - two "targets" (?). Radar says one
is larger than the other. Ahead flank, 4 engines. Looks like they
want to gang up on me. Changed course to 045° T. They track at 18.0
knots, course 010, then 015, then 032. The light dawns! Bet myself
10 to 1 that they are roughly D-F'ing our sugar jig radar, thereby ex-
plaining the definite "alertness" of these A/S vessels in the three
contacts I've had with them.

— page 149 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS BLUEBACK (SS326), Report of War Patrol Number THREE.
22 May 1945 (I) (Continued)

0121 Secured SJ and shifted to ST and walked neatly away! Maybe they think
      we submerged. Am not going to do any further work on these high speed,
      alert escorts in this water. Headed east to patrol traffic lanes be-
      tween MASALEMBO's and SURABAYA.
0639 Submerged, changed course to 120° T.
0800 Sailboats in sight - sixteen.
1200 Posit 6°22'S, 114°06'E.
2001 Surfaced, patrolling eastern approach lanes to SURABAYA.

23 May 1945 (I)
      Patrolling on 2 engines.
0230 Spoke BUGARA.
0802 Dive, submerged patrol across traffic lanes eastward of SURABAYA.
1200 Posit 6°06'S, 115°23'E.
2000 Surfaced, 2 engines.
2030 Sent wolf pack directive to HMS TACITURN and HMS THOROUGH. THOROUGH
      receipted loss authentication. Signal strength-one.
2120) Converted #4 FBT to ballast.
2230)

24 May 1945 (I)
      Patrolling across traffic lanes on eastern edge of area.
0135 Spoke U.S.S. LIZARDFISH.
0810 Submerged. Perhaps we can find some torpedo targets by scraping along
      the bottom - there certainly aren't any left on the surface! This
      situation of "no targets" is my latest personal gripe against the
      miserable uncooperative Jap. The only targets they have made available
      for us in two and one-half patrols have been assorted escort vessels
      and sailboats.
1200 Posit 6°31'S, 114°59'E.
2010 Surfaced, patrolling on 2 engines.

— page 152 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS BLUEBACK (SS326), Report of War Patrol Number THREE.
28 May 1945 (I) (Continued)

2142 LAMPREY opened fire but the silly target didn't know enough to shoot at
     him.
     Finally opened to 6500 yards and headed around to join LAMPREY.

2202 Fired a few more rounds of 5" at his gun flashes but when he ceased
     fire we had no point of aim so decided to call it a draw (except he
     didn't hit us, thanks to our smoke screen).
     LAMPREY apparently decided same thing at about the same time.
     Better night sights and star shells would have helped considerably to
     eliminate this boil on the heel.
     Lessons learned:
     1. Get and keep TARGET up moon.
     2. Concentrate forces on initial attack.

2207 Set course for new area, 3 engines.

29 May 1945 (I)
     Patrolling on 3 engines enroute new area.

0602 Sighted lighted ship to south.
     Headed toward.

0608 Identified as fully illuminated hospital ship. Resumed course.

0813 Submerged.

1200 Posit 5°31.5'S, 108°22'E.

1903 Surfaced, 2 engines.
     In area.

30 May 1945 (I)
     2 engines proceeding to southwest corner of area vicinity of SUNDA
     Strait.

0035 Spoke BOARFISH.

0110 BOARFISH alongside. Reported damage to propellor and sound heads, also
     4 persistant A/S vessels.

— page 160 —
C-O-N-F-I-D-E-N-T-I-A-L

Subject: USS BLUEBACK (SS326), Report of War Patrol Number THREE."
5 June 1945 (I) (Continued)

1140 Ahead full.

1148 Slowed and took observation. Ships are on other side of low lying reef.
     White water off reef close ahead. Attack impossible, reversed course,
     closest range about 9,000 yards, target speed 180-200 RPM about 20 knots.
     Long range shot with only 2 serviceable MK 14-3A torpedoes aft, in slick
     sea would be ineffective.

     Tracked target out to 24,000 yards.

     Cleared reef strewn area.

     The track of this task force was a masterpiece of submarine evasion.
     The waters they traversed are, by reason of depth, suspected minefield
     protection, obstructions and reefs, immune to submarine attack.

2046 Surfaced, proceeding vicinity SUNDA Strait.

6 June 1945 (I)

0100 Spoke CHUB who stated they were detected and bombed by plane during
     approach on same task force.

0659 Submerged north of SUNDA Strait.

0928 Sighted SUGAR DOG.

1140 Sighted SUGAR DOG.

1200 Posit 5°48'S, 106°02.5'E.

1500 Sighted SUGAR DOG.

2047 Surfaced.

2302 Spoke CHUB who said he would work southwest corner of THOUSAND ISLANDS.

7 June 1945 (I)

     Enroute S.E. corner of THOUSAND ISLANDS.

0655 Submerged.

0817 JK sound reports distant pinging 085° T.

0900 Sighted masts 103° T. Identified as Jap CA, range 15-20,000. Angle on
     bow - 40 Starboard.

— page 164 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS BLUEBACK (SS326), Report of War Patrol Number THREE.

23 June 1945 (I)

Enroute patrol area at 3 engine speed - 70%.
1200 Posit 24°34'S, 112°34'E.
2130 Exchanged calls with HMS THOROUGH.

24 June 1945 (I)

Enroute patrol area at 3 engine speed.
0905 Exchanged calls with CAIMAN.
1017 Stopped and put gun target in water manufactured from four 5" cans
lashed together with four swab handles to form a flat raft with a
vertical swab handle near each corner which supported a mattress cover
and one 5 gallon flour can for sight and radar target. Worked out all
guns, firing 15 rounds of 5" target ammunition.
1200 Posit 18°39'S, 113°30'E.
2000 Held night shoot of all guns with lifebelt flashlights added to above
type target, 15 rounds of 5" target ammunition.
This target is quite satisfactory if the swells are not high. The
extra swab handles required can be easily stowed aboard.
2033 Submerged - Collision drill.
2046 Battle surface. Ahead flank - Tested smoke screen.
2053 Dived.
2100 Surfaced - proceeding on 3 engines - 16 knots.

25 June 1945 (I)

Enroute patrol area 3 engines.
1200 Posit 13°05'S, 115°10'E.
1300 #2 engine out of commission - liner.
1900 Received CTF 71.1 dispatch 250850 of June modifying Operation Order.
Proceeded toward LOMBOK Strait on 3 engines at 85%.

— page 165 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS BLUEBACK (SS326), Report of War Patrol Number THREE.
26 June 1945 (I)

0521 3 engines 85%.
4 engines, entered LOMBOK St.
Numerous weak APR contacts. Full moon.
0657 Submerged in center of LOMBOK St.
1200 Posit 8°37'S, 115°43'E.
2015 Surfaced, having made good about 3 miles.
4 engines.
2038 3 engines. Commenced battery charge.
2142 BULLHEAD has eastbound contact to northwest of us - about 60 miles.
Sent course to intercept.
2155 Sent BULLHEAD our position course and speed.
2215 Exchanged calls (SJ) with U.S.S. BULLHEAD, who is tracking 3 ships.
Intercepted message from ICEFISH to BULLHEAD to attack at discretion.
2340 Sent message to BULLHEAD to attack at discretion and that we would
assist with our 2 big guns and torpedoes as possible.
2345 BULLHEAD diving for attack. -
We do not yet have radar contact, but thanks to Griffith we know course,
speed, position and number, and if he bags the big one, we can sure
beat off any attempted depth chargers or at least divide them.

27 June 1945 (I)
0010 We should now be about 15,000 yards ahead of targets and on track. We
should hear explosions any minute - manned sound gear and told torpedo
rooms to listen. Nothing heard.
0052 Radar contact 319° T. 11,500 yards. Tracking.
0059 Radar reports second target.
0103 Believe we have ICEFISH interference at about 050° T. Sent contact to
ICEFISH.
0109 Only one target now.

— page 166 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS BLUEBACK (SS326), Report of War Patrol Number THREE.
27 June 1945 (I) (Continued)

0135 Closed target to 8000 yards. Identified as small pinging patrol boat
     Full moon. Told ICEFISH. Bigger game to west.

0139 Headed westward at full speed toward BULLHEAD diving position.

0142 Decoded message from BULLHEAD saying that he had no luck with five
     set at 5 feet and identified contacts as MIDORI and minelayer. Said
     he would track while we try. My first reaction was that we would
     just throw away some more torpedoes on these detestable shallow draft
     targets. Knew we had but slight chance of connecting at all, so de-
     cided to gamble 4 feet depth settings, 5 torpedoes 75 feet between
     fish so that maybe one would get him on the upswing of its depth
     oscillations.

0150 Radar contact 12,000 yards, reversed course. Tracked him on steady
     course 12 knots; only one target! Wondered if someone was chasing
     BULLHEAD.

0205 Submerged. ST has him at 8800 yards. Also can see him in ST high
     power. What a scope! Tracks perfectly. Pinging on 19.6 kcs.

0227 Fired 1,2,3,4 and 5 tubes 10 seconds interval.
     Gyros 1½°L to 9°R, run 1650, depth 4 feet.

0229 True course of torpedoes should have put them in the progressing
     trough of the sea, saw no broaches.

0230 Saw, then heard loud explosion. Looks and acts as though we hit him
     in the props. (This should have given us at least 3 to 4 hits! - One
     fish must have caught him on the rise!) Came around for stern shot
     to pull the plug on him.

0231 Explosion (depth charge?)

0232 Explosion (depth charge?)

0232 Fired #7 tube. He is fully stopped but 15 knot wind is swinging his
     bow around. Low stern is acting as sea anchor.

0235 Range 1600, depth 4 feet, gyro 6°L.
     Track - about 140° starboard at time of firing and about 165 starboard
     when torpedo should have hit - miss - try again.
     Saw rather bright light flash at surface of water a couple of times
     between us and target. Went to 100 feet in case it was torpedo.
     Two loud explosions. Some fun.

— page 167 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS BLUEBACK (SS326), Report of War Patrol Number THREE.
27 June 1945 (I) (Continued)

0235½ Two more loud explosions. Came to periscope depth.
Headed in for bow shot and gave all officers in conning tower a
quick look at the target.

0245 Fired #6 tube.
(Range: 900 yards. Depth: 4'. Gyro: 42°L. Track: 90P. X

0245-52 Hit - Flash - Smoke and he is gone! This mark 18-2 ran perfectly
straight and broached just slightly about 3-4 times running into and
across sea.

0248 Battle station sound men all reported breaking up noises from target.
Good training.

0252 Surfaced. Saw survivors in lifeboat. Clearing scene and charging
batteries. Did not consider it worth while to attempt to take
survivors aboard for following reasons:

1. I know there is a CHIDORI and patrol vessel in the vicinity.

2. Perfect night for aircraft with full moon.

3. Might very possibly have had some close aboard small arms
fire from lifeboat.

4. Have entire patrol ahead and little space to put prisoners.
Have much special mission extra equipment and personnel
aboard already.

In view of above decided to let nature take its course and sent
message to other subs in vicinity concerning results of attack and
position of survivors. Perhaps some vessel leaving the area will
find the situation more attractive.

Target tentatively identified as AM class one or AM class thirteen.
Extensive raised section amidships leads commanding officer to be-
lieve that this was not an AM class seven. Considered possibility of
confusing CHIDORI with AM class seven. Silhouettes most similar.
Set course 280° T.

0306 Radar interference 130° T and 330° T. Sighted several sailboats.

0414 Radar interference 100° T.

— page 169 —
C-O-N-F-I-D-E-N-T-I-A-L

Subject: USS BLUEBACK (SS326), Report of War Patrol Number THREE.
30 June 1945 (I)

1200 Patrolling at 3 engine speed enroute area for second special mission.
Posit 5°31.5'S, 109°21'E.
1900 Test fired 40mm.
2148 Slowed to 2 engines 70%.

1 July 1945 (I)

Patrolling 2 engines 70%.
0651 Large 2 masted schooner sighted in north center of SUNDA strait.
0706 Submerged near northeast corner SUNDA strait.
0839 Sighted 3 SUGAR DOG types to southeastward.
Commenced approach.
At ranges of 800 - 1800 yards identified targets as SUGAR DOGS of
50 to 100 feet long, unloaded. Impossible torpedo targets.
0917 Discontinued approach.
0924 Sighted "PETE" float plane escorting the above SUGAR DOGS. This
must be the Japs answer to the gunfire around here lately.
1200 Posit 5°48.5'S, 106°03'E.
2035 Surfaced.
2210 Three engines, commencing transit of SUNDA strait.
2225 Radar contact ahead. Stopped.
2246 Target identified as the 2 masted sailboat previously seen here.
Intend to investigate him thoroughly at a later date if again en-
countered. Continued transit, uneventful.
2305 Transit completed. Enroute special mission area on 2 engines 70%.

— page 172 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS BLUEBACK (SS326), Report of War Patrol Number THREE.
7 July 1945 (I)

          Patrolling 2 engines.
0702      Submerged north of THWARTWAY island.
1200      Posit 5°54'S, 105°53.5'E.
1600      Commenced submerged transit of SUNDA, northwest side. Hope to
          positively identify source of glow seen last night.
2059      Surfaced 2 engines.
          Using SJ for check every 20 minutes. Searching with ST. Believe
          sudden total absence of traffic here is caused by detection of my SJ
          equipment.

8 July 1945 (I)

          Approaching southern coast of SUMATRA.
0100      Unable to confirm source of glow seen last night. Set course to
          return to SUNDA.
0708      Submerged near S.E. corner of SUMATRA for submerged transit of SUNDA.
1200      Posit 5°54.5'S, 105°52'E.
          Patrolled north of THWARTWAY for several hours then headed north to
          clear strait for surfacing. No traffic.
2101      Surfaced. Will head north then east to clear THOUSAND ISLANDS and
          contact LOGGERHEAD for transfer of mail and special mission officers
          in accordance with dispatch directives.
2220      Received message from LOGGERHEAD requesting rendezvous. Set rendezvous
          and proceeded on 3 engines.

9 July 1945 (I)

          Three engines enroute rendezvous.
0250      Transferred special mission officers and equipment to LOGGERHEAD and
to        received 6 bags mail. This mail is certainly the genuine "McCoy"
0350      morale medicine.
0700      Submerged north of SOUTH WATCHER near THOUSAND ISLANDS.
          Sighted several luggers (motor driven).

— page 177 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS BLUEBACK (SS326), Report of War Patrol Number THREE.
15 July 1945 (I)

Patrolling on 2 engines. Heading for BOOMPJES island to see if
there are any motor vessels there.

0702 Saw 1 small fishing vessel inside middle reef to north of BOOMPJES.
     Set course to cover most area and arrive at DISCOVERY EAST BANK light
     at sunset. Hope the largo schooner that I saw several days ago is
     there.

1200 Posit 4°48'S, 107°48'E.

1831 Sighted above light.

1842 Range 18,000 yards, saw same two masts soon on 11 July.

1957 Opened fire with both 5" and both 40mm guns - order of targets:
     1. Largo schooner.
     2. Small solid structure clear of lighthouse.
     3. Lighthouse. Object: to mess up Jap lookout station and
        definitely not to destroy this valuable aid to navigation.
        Average range 1000 to 600 yards.

2005 Looks like above objects have been accomplished. Headed out. Then
     saw that schooner still had some general outlines left. Headed back
     in and No. 2 5 inch gun demolished schooner and put several more hits
     in other structures.

2011 Cleared scene. Set course for KARIMATA strait, having expended 38
     rounds of 5" ammunition and 230 rounds of 40mm. 4 engines.

16 July 1945 (I)

4 engines.

0115 Exchanged calls with northbound CROAKER.

0340 Transit completed.

1200 Posit 0°07.5'S, 106°46'E.

1228 Crossed equator longitude 106°42'E.

1606 Sighted plane through light overcast and SD reports range 4 miles.

1612 Lost contact at 9 miles. Possibly A-26 (2 engine low wing).
     No I.F.F.

— page 181 —
C-O-N-F-I-D-E-N-T-I-A-L

Subject: USS BLUEBACK (SS326), Report of War Patrol Number THREE.

D. TIDAL INFORMATION:

     1. On entering the southern entrance to LOMBOK strait about 2200 17 May
1945, a 4 knot current setting 125° T was encountered. A current rip about
four miles east of the north tip of NOESA BESAR signalled a shift in the set
to southwest. In the north half of the strait the current was setting south-
west, indicating that the current was splitting north of NOESA BESAR, running
southwest through BADUNG strait and southeast out of LOMBOK strait.

     2. Along the northeast shore of BALI a 2½ knot current setting southeast
was encountered during the morning of 18 May 1945.

     3. Drift currents encountered in the open Java Sea averaged 0.3 knot in
a general westerly direction.

     4. West of the THOUSAND ISLANDS, currents averaged 1.0 knot setting 230.
In and near SUNDA strait currents varied from 0.5 knot to a maximum of 3 knots
setting 220° - 230°. Currents were predominatly southwest, but a 24 hour
(about) cyclo was evident, with the southwest current a maximum once during the
period, gradually decreasing to one of three conditions:

          (a) A weak southwest current.

          (b) Slack water.

          (c) A northeast current, generally weak, but reaching 1.0 knot on
               one opportune occasion.

— page 182 —
C-O-N-F-I-D-E-N-T-I-A-L

Subject: USS BLUEBACK (SS326), Report of War Patrol Number THREE.

E. NAVIGATIONAL AIDS:

1. A steel tower on TOPPERS island in SUNDA strait made an excellent
radar landmark for night navigation, giving a clear, distinct and easily
identified pip on the radar screen. MUNDU island on the SUMATRA coast
(Lat. 5°41'S, Long. 105°50'E) also gave a strong distinct radar pip. Using
those two targets in conjunction permitted accurate and safe night navigation
in the confined area adjacent to SUNDA strait.

2. No lighted navigational aids were encountered. The usual landmarks
on the charts were used for all close in navigation.

3. The inconvenience of using two or three charts to cover an assigned
patrol area is considerable at times. Increased navigational efficiency re-
sults, in most cases, therefore, if a composite chart of the area is con-
structed with the pertinent portions of the several charts. Unfortunately,
the H.O. practice of issuing most adjoining charts with varying scales is usually
sufficient to prevent formation of a composite chart. From this viewpoint,
eventual rectification of this defect appears possible, practical and desir-
able. Even though no benefit might accrue for some time, the eventual con-
version of adjoining charts to reasonably matching scales appears to be warrant-
ed. The difficulty of such an immense conversion and the impracticability of
obtaining perfectly matching scales on adjoining charts and the impossibility
of matching portfolios is realized and admitted. However, it does appear that
a practical solution could be worked out. A thoroughly satisfactory solution
would be a specially designed submarine portfolio embodying the desired
characteristics. It is a firm belief that this conversion is of sufficient
importance to warrant investigation and eventual accomplishment.

4. The Ball Recording sextant was used several times for experimental
sights only. Little satisfaction resulted. It is concluded that considerable
practice and perseverance would be required to obtain a usable fix with this
instrument. The limits of error in the sights taken with this sextant appear
to be roughly comparable to the error of an ordinary sextant when sights are
taken with an extremely poor horizon.

5. A minor point, but one which would be extremely helpful, would be the
use of black, instead of red, etched grid lines on the Hoey Position Plotter.
Under red light the red grid lines are difficult to see. "Homemade" black
lines are usable, of course, but installation of black lines at the source of
manufacture would be far simpler and more satisfactory.

— page 183 —
Subject: U.S.S. BLUEBACK (SS326), Report of Patrol Number THREE.

NO. | TIME - DATE | POSIT | TYPES | INITIAL | HO! | COURSE | REMARKS
    |             |       |       | RANGE   | CONTACTED | SPEED  |
----||-------|-------||||
1.  | 0712(I)     | 6-19.5S | 2 Subchasers | 10,000 yds. | Lookout   | Evaded.
    | 19 May      | 113-48E |       |         |           |
2.  | 2225(I)     | 6-03S   | 1 PC  | 9,000 yds. | SJ Radar  | 315    | PC chased us at 18 kts.
    | 21 May      | 112-20.5E | 2 unident. |         |           | 6.5 kts. | Gun attack #1.
    |             |       | (small) |         |           |
3.  | 0050(I)     | 5-33S   | 2 PC's | 12,000 yds. | SJ Radar  | 035    | Evaded. Apparently hunter-
    | 22 May      | 112-32E |       |         |           | 18 kts. | killer group.
4.  | 0510(I)     | 6-19S   | DD (old) | 12,000 yds. | SJ Radar  | 090    | Made end around submerged
    | 28 May      | 110-20E | MOMO(?) |         |           | 10 kts. | on his projected track. Did
    |             |       |       |         |           |        | not appear.
5.  | 2010(I)     | 6-14S   | SCS-1 | 12,000 yds. | SJ Radar  | 095    | Night radar attack. Missed
    | 28 May      | 110-32E |       |         |           | 10 kts. | with torpedoes (Gun attack
    |             |       |       |         |           |        | #2).
6.  | 0602(I)     | 5-25S   | Hospital | 18,000 yds. | Lookout   | East   | Properly lighted.
    | 29 May      | 109-16E | Ship  |         |           |
7.  | 1510(I)     | 5-47S   | Small | 8,000 yds. | Per.      | 280    | No zig plan. No escort.
    | 31 May      | 105-59E | Sugar Dog |         |           | 5.5 kts. |
8.  | 1510(I)     | 5-47S   | Small | 9,000 yds. | Per.      |        | Disappeared while making
    | 31 May      | 105-59E | Sugar Dog |         |           |        | approach on ship contact #7.
9.  | 1730(I)     | 5-50S   | Medium | 9,000 yds. | Per.      |        | Nearest approach to target
    | 31 May      | 105-57E | sized MV or |         |           |        | 9,000 yds. angle on bow
    |             |       | Naval Aux. |         |           |        | 180° when sighted.

— page 184 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: U.S.S. BLUEBACK (SS326), Report of War Patrol Number THREE.

F. SHIP CONTACTS
| NO. | TIME | DATE | POSIT | TYPES | INITIAL RANGE | COURSE SPEED | HOW CONTACTED | REMARKS |
|---|---|---|---|---|---|---|---|---|
| 10. | 1440(I) | 1 June | 5-48S | 2 Small | 12,000 yds. | -- | Per. | Passed down SUNDA Strait |
| | | | 106-00E | Sugar Dogs | | -- | | hugging coast. No escort. | No zig-zag. |
| 11. | 1827(I) | 1 June | 5-46S | Small | 10,000 yds. | -- | Per. | Same. |
| | | | 106-02E | Sugar Dog | | -- | | | |
| 12. | 0757(I) | 2 June | 5-43.5S | 3 Sugar Dogs | 15,000 yds. | 300 | Per | Allowed to go by to prevent |
| | | | 106-02E | 1 SC | | 4.5 kts. | | scaring bigger game. No | zig plan. |
| 13. | 0928(I) | 2 June | 5-48S | 2 Med. AK's | 12,000 yds. | 220 | Per. | 1 timed hit in one AK. 1 |
| | | | 105-59E | 3 PC's | | 7.5 kts. | | escort probably sunk or damaged. |
| 14. | 0730(I) | 3 June | 5-39S | Small motor | 6,000 yds. | 160 | Per. & | Sunk lugger. Left sampan |
| | | | 106-46.5E | lugger towing | | 4.5 kts. | JP Sound | sinking. No gun attack #3. |
| | | | | sampan | | | | |
| 15. | 0745(I) | 4 June | 5-46.5S | Small | 5,700 yds. | 130 | Per. | Too small to shoot. No |
| | | | 106-00E | Sugar Dog | | 4.5 kts. | | escort. No zig plan. |
| 16. | 0912(I) | 4 June | 5-48S | Same | 7,000 yds. | -- | Per. | Same |
| | | | 106-02E | | | 4.5 kts. | | |
| 17. | 1127(I) | 5 June | 5-49S | 1 NACHI | 18,000 yds. | 160 | Per. & | Nearest approach about 9000 |
| | | | 106-41E | class CA | | 18-20 kts. | JP Sound | yds. Target was inside reefs |
| | | | | 1 DD. | | | | and islands and protected | from S/M attack. |

— page 185 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: U.S.S. BLUEBACK (SS326), Report of Patrol Number THREE.

NO. | TIME | DATE | FOSIT | TYPES | INITIAL RANGE | COURSE SPEED | HOW CONTACTED | REMARKS
--- | --- | --- | --- | --- | --- | --- | --- | ---
18. | 0929(I) | 6 June | 5-47.5S | Small | 9,000 yds. | 045 | Per. | Too small to shoot. No
    |       |        | 106-02.5E | Sugar Dog |             | 4.5 kts. |      | escort, no zig plan.
19. | 1140(I) | 6 June | 5-47S | Same | 8,000 yds. | 345 | Per. | Same.
    |       |        | 106-06.5E |             |             | 4.5 kts. |      |
20. | 1500(I) | 6 June | 5-47S | Same | 8,000 yds. | 300 | Per. | Same.
    |       |        | 106-07E |             |             | 4.5 kts. |      |
21. | 0900(I) | 7 June | 5-49S | N.CHI class | 15,000 yds. | 270 | Per. & | Could not close track in
    |       |        | 106-41.5E | C; 1 DD. |             | 18-20 kts. | JP Sound | time.
22. | 1007(I) | 7 June | 5-48S | Subchaser | 5,000 yds. | --- | Per. | Stayed in our vicinity for
    |       |        | 106-42E |             |             | --- |      | 3 hrs. searching for some-
    |       |        |           |             |             |     |      | thing-probably us. Evaded him
23. | 0945(I) | 8 June | 5-49S | 2 Small | 8,000 yds. | --- | Per. | 1 towing the other. Too small
    |       |        | 106-02E | Sugar Dogs |             | 4.5 kts. |      | to shoot. No escort, no zig
    |       |        |           |             |             |     |      | plan.
24. | 1320(I) | 8 June | 5-49.5S | Same | 8,000 yds. | --- | Per. | Too small to shoot. No escort
    |       |        | 106-04E |             |             | 4.5 kts. |      | no zig plan.
25. | 0227(I) | 9 June | 5-54S | 150' Sugar | 5,000 yds. | 340 | Lookout & | Missed with 1 MK 18. Target
    |       |        | 105-47E | Dog |             | 5.5 kts. | SJ Radar | about 150' long. No escort
    |       |        |           |             |             |     |      | while transiting SUNDA strait
26. | 0248(I) | 9 June | 5-55S | Small | 4,000 yds. | 100 | SJ Radar | Too small to shoot. No
    |       |        | 105-46E | Sugar Dog |             | 4.5 kts. |      | escort, no zig plan.

— page 186 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: [HANDWRITTEN: USS BLUEBACK (SS326), Report of]
F. [HANDWRITTEN: Patrol Number THREE.]
SHIP CONTACTS (Continued)

NO. | TIME - DATE | POSIT | TYPE | INITIAL RANGE | HOW CONTACTED | REMARKS
----||-------|------|||
27. | 0052(I) | 7-25S | Minelayer | 12,000 yards | 090 | Closed to 8000 yards to
    | 27 June | 115-58E | (probably | | SJ Radar | investigate, then avoided.
    | | | 222 - J) | | |
28. | 0150(I) | 7-30S | Patrol Boat | 11,550 yards | 085 | Two torpedo hits dis-
    | 27 June | 115-56E | | | SJ Radar | integrated him.
29. | 0839(I) | 5-50S | 3 SUGAR DOGS | 6,000 yards | 134 | Too small to shoot.
    | 1 July | 106-02E | | | 4 knots | No zig plan.
    | | | | | Per. | No air cover.
    | | | | | | Air cover of one "PETE".
30. | 0925(I) | 5-38S | Small | 8,000 yards | Northwest | Too small to shoot.
    | 2 July | 104-44E | Tugboat | | | Per. |
31. | 1013(I) | 5-50S | Small | 14,000 yards | West | JP Sound | Too close
    | 5 July | 106-03E | Patrol Boat | | | & Per. | to reach.
32. | 1147(I) | 5-51S | 4 SUGAR DOGS | 12,000 yards | 030 | Per. | Air cover.
    | 5 July | 106-03E | 1 Patrol Boat | | 4.5 kts. | |
33. | 1200(I) | 5-39.5S | 3 Luggers | 5,000 yards | East | Per. | Sink one by gunfire.
    | 9 July | 106-42.5E | | | 5.5 kts. | |
34. | 1025(I) | 5-54.5S | 1 SUGAR CHARLIE | 6,000 yards | Moored | Per. | Missed SUGAR CHARLIE.
    | 14 July | 105-33.5E | 4 SUGAR | | | | Convoy had air cover.
    | | | DOGS | | | |
35. | 1831(I) | 3-50S | 2 masted Motor | 18,000 yards | Moored | Per. | Moored at DISCOVERY
    | 15 July | 109-01E | schooner | | | | EAST BANK Light.

— page 192 —
C-O-N-F-I-D-E-N-T-I-A-L

Subject: USS BLUEBACK (SS326), Report of War Patrol Number THREE.
H. ATTACK DATA:

U.S.S. BLUEBACK Torpedo Attack No. 3 Patrol No. 3
TIME: 0239(I) DATE: 9 June 1945 LAT. 5°58'S, LONG. 105°56'E.

TARGET DATA - DAMAGE INFLICTED

Description: 150' SUGAR DOG.
Ships Sunk: None
Ships Damaged: None
Damage Determined by: - - -

Target Draft: 4'. Course: 070°. Speed: 5 knots. Range: 1000 yards (at firing).

OWN SHIP DATA

Speed: 12 knots. Course: 324° T. Depth: Surface.

Type Attack: This was a night surface radar attack while making a
transit of SUNDA Strait. Radar ranges and TBT bearing
were used. Only one torpedo was fired as target was
judged to be worth no more than one.

Tube Fired #6
Track Angle 85°S
Gyro Angle 10½°R
Depth Set 3'
Power(SPD) 28.2 knots
Hit or Miss Miss
Erratic No
Mk. Torpedo 18-2
Serial No. 58015
Mk. Exploder 8-5
Serial No. 11258
Actuation Set Contact
Actuation Actual - - -
Mk. Warhead 18-2
Serial No. 4833
Explosive Torpex
Firing interval - - -
Type spread 1
Sea conditions CLYTIE
Overhaul activity None
Remarks

— page 195 —
---
C-O-N-F-I-D-E-N-T-I-A-L

Subject: USS BLUEBACK (SS326), Report of War Patrol Number THREE.
H. ATTACK DATA:
U.S.S. BLUEBACK                                Torpedo Attack No. 5                                Patrol No. 3
TIME: 1044(I)                                 DATE: 13 July 1945          LAT. 5°55'S. LONG. 105°52'E.

                                              TARGET DATA - DAMAGE INFLICTED

Description:                                  Target was a 540 ton Sugar Charlie Sugar identified as
                                              the Tosei Maru (Page 80, ONI 208-J) or very similar
                                              type. It was in company with four Sugar Dogs, none of
                                              these others were suitable torpedo targets. Convoy had
                                              air cover but no surface escorts.

Ships Sunk:                                   None

Ships Damaged or
Probably Sunk:                                None

Damage Determined by: --- ---

Target Draft: 12' (approx); Course: 100° T; Speed: 5.5; Range: 940 (at firing).

                                              OWN SHIP DATA

Speed: 4; Course: 325; Depth: 63'; Angle: ½°U (at firing)

                                              FIRE CONTROL AND TORPEDO DATA

Type

— page 196 —
C-O-N-N-F-I-D-E-N-T-I-A-L

Subject: USS BLUEBACK (SS326), Report of War Patrol Number THREE.
H. ATTACK DATA:

— page 205 —
C-O-N-F-I-D-E-N-T-I-A-L

Subject: USS BLUEBACK (SS326), Report of War Patrol Number THREE.
J. ANTI S/M MEASURES AND EVASION TACTICS (Continued)

     2. (a) In the attack by the escorts of the convoy contact at 2225, 21 May
1945, it is a considered opinion that the SJ radar was effectively d-f'd. The
factors indicating this are:

          (1) The immediate chase on our exact bearing on initially contacting
              the convoy.

          (2) The subsequent chase on our exact bearing nearly two hours later
              while we were clearing the area on a course normal to the initial
              course on which we had evaded the first attack.

     (b) Lack of any APR contact or of SJ interference precludes the enemy
use of radar to contact us. In the second case, they could not have sighted
us due to excessive range, their closest approach being 10,000 yards with the
moon overhead and our stern giving them minimum silhouette. At this closest
approach we could not see either target in the type 4 periscope or with
binoculers. The possibility of their selecting by chance an exact bearing
for subsequent chase is remote. That the SJ was being D.F.'d is practically
certain, the clinching factor being the fact that they lost us completely after
we secured the SJ radar.

     (c) The suspicious "alertness" of these two escorts and their speed of
18 knots indicates that they are the same or a similar pair who chased this
vessel in this area during the 2nd war patrol. At that time the D.F.ing of the
SJ was suspected but not confirmed. After three encounters, however, the
suspicion appears to be justified.

     3. In the torpedo attack and subsequent gun attack occurring about 2100,
28 May 1945, the same evasive tactics were used, including the effective and
deluding smoke screen. The target retaliated with gun firing using heavy and
light machine guns only. At no time was there any evidence of the SJ radar
being DF'd. The APR gave no evidence of his having any type of radar. No
damage was sustained.

     4. (a) After firing three Mk 18's from bow tubes at a medium sized AK in
SUNDA strait, depth control was lost and the results of one timed hit not
observed. Two circular runs over the conning tower and after battery probably
helped the three escorts to locate our general position. Rigged for depth
charge; went to 200 feet and ran silent. Depth of water at this point was
about 240 feet and the current was 1.5 knots setting 228° T. The rocky and
eroded character of the bottom and the confined area due to various rocks and
islands in the strait, strictly limited the possible evasive courses and
speeds.

— page 207 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS BLUEBACK (SS326), Report of War Patrol Number THREE.
J. ANTI S/M MEASURES AND EVASION TACTICS (Continued)

7. In the vicinity of SUNDA strait the following indication of a possible
Jap defence against acoustic weapons was noted. JP sound gear picked up the
screws of a SUGAR DOG clearly and then stated that there was a loud disturbance
in the water some distance behind and following the target. The USS CHUB
reported noting this occurrence on a previous occasion.

— page 211 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS BLUEBACK (SS326), Report of War Patrol Number THREE.
K. MAJOR DEFECTS AND DAMAGES (MACHINERY) (Continued)

To carry the auxiliary load upon surfacing from an all day dive plus at least
a 400 amp charging rate per battery replace the present 300 KW engine. Many
nights after an all day dive, four main engines are required for propulsion,
leaving the auxiliary engine for charging and auxiliary load, which gives
about a 225 amp charging rate per battery. This is very undesirable. Another
more common undesirable situation is when the finishing rate of the charge is
reached on a main engine it is impossible to shift to the auxiliary engine for
any length of time. The air charge will normally be secured by this time,
however, the vapor compressor distillers two number as yet, which puts the
auxiliary load plus a 300 amp charging rate per battery just above the
capabilities of the 300 KW auxiliary engine. About the only time the 300 KW
auxiliary engine is of any value is to carry a zero float on the batteries
after securing the charge, maintaining top gravity for the coming dive. This
could be done with a much smaller engine, say 150 KW. The following auxiliaries
running after surfacing from an all day dive and a four engine speed is de-
sired are: Two air compressors; two vapor compressor distillers, four battery
blowers, one hydraulic plant, two purifiers, lighting, two air conditioning
plants, one refrigerator plant, steering motor, two ventilation blowers, two
main motor circulating water pumps, A.C. lead, gyro, radio and radar. The
above loading conditions requires 600 amps, leaving 225 amps per battery for
a charging rate, voltage 285. This would be a full load on the auxiliary engine,
any additional auxiliary load such as stand-by lube oil pump, turbo blow would
overload the auxiliary engine or cut the charging rate lower. After surfacing
from an all day dive, having charged on the main engines as the finishing rate
is reached, the auxiliaries in use would be the same as above with the ex-
ception of two air compressors, one main motor circulating water pump, hydraulic
plant and lighting load reduced which would require 350 to 400 amps. This
would permit carrying a 300 amp per battery charging rate on the auxiliary
engine for a short while. Battery voltage would be approaching top voltage,
reducing the charging rate or overloading the auxiliary engine. A 400 amp
finishing rate would be impossible. Charge must be continued on a main engine
where as a 450 KW auxiliary would handle such conditions. A smaller more
compact engine would be very desirable, leaving more room to work on main
engines.

7. The smoke maker installed by ship's force six months ago is a means of
introducing fuel oil directly into the exhaust manifold to be vaporized by the
hot exhaust gases. The result is a dense white billowy cloud of smoke which
provides an extremely effective smoke screen.

The tubing is 3/8" O.D. seamless copper tubing tapped from the dis-
charge side of the attached fuel oil pump and extended into the exhaust header
to a length of seven inches. The tip is half flattened to form a partial spray.
Two stop valves in the line assure positive cut off action.

— page 212 —
C - O - N - F - I - D - E - N - T - I - A - L

Subject: USS BLUEBACK (SS326), Report of War Patrol Number THREE.

— page 213 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS BLUEBACK (SS326), Report of War Patrol Number THREE.
L. RADIO: (First Half of Patrol)

No major material failures occurred, though a second RBH installed during
the last refit appeared to have low sensitivity.

Reception conditions were poor the first two weeks on NPT-1 schedules,
when the new station appeared to be having transmitter and tape troubles, but
in Area E-2, excellent reception was had. Five sorials were missed during the
first two weeks, none thereafter; reception south of the barrier continued to
be good. 9250 kcs. was the frequency best heard at night, 12630 kcs. during
the day. 4370 kcs. could not be used.

Five messages were sent, an average time of fifty minutes being required.
Four were sent to VIXØ, one to VHM. Messages were promptly receipted for.

Wolf pack frequencies were used several times and results were satisfactory.

VHF was used twice. Shorted power leads prevented satisfactory results the
second. Short ranges still are the greatest drawback to this gear.

(Second Half of Patrol)

No major material difficulty was encountered.

New wing antennas were installed at Fremantle during the reload, due to
installation of a second five inch gun. Their performance was entirely
satisfactory.

On July 11, at Lat. 3°40'S, Long. 109°38'E, we received NPT-1 on the SD
radar mast from depths of 48 to 54 feet on 9250 kcs., signal strength 4 - 5.

Transmissions were extremely difficult to get to NPT-1 direct, as we
raised him only once (signal strength 1 - 2) in three attempts from E-1 and
E-8. VIXØ and NPM could usually be raised easily. On our first by VIXØ
for the second half of the patrol we were told to send the
message to him, and after sending the message got no receipt. We could not
then contact VIXØ, but heard him getting messages from other stations. On
calling Any - all stations again, VIXØ answered and promptly receipted for
repeated message. We may have been sending to a Jap the first time, since
VIXØ as usual with most shore stations, sent no authentication with her "go
ahead". It is recommended that authentication always be given by shore
stations asking ships for their messages.

Tests with other submarines showed that the maximum reliable range of the
VHF between subs is about two miles, and is often little more than one mile.

— page 214 —
C-O-N-F-I-D-E-N-T-I-A-L

Subject: USS BLUEBACK (SS326), Report of War Patrol Number THREE.
L. RADIO (Continued)

Operation of SPR-SPA was satisfactory, though few signals were intercepted.
See section "U". The new directional antennas were useful in determining
bearings on strong signals, but on weaker signals they do not give any in-
dication. It is recommended that shielded coaxial cables be used as leads to
these antennas instead of the present unshielded cables, which pick up too
much noise.

— page 215 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: USS BLUEBACK (SS326), Report of War Patrol Number THREE.
M. RADAR: (First Half of Patrol)

Both SJ and ST radars were used for surface search during this patrol.
The results obtained from the ST were not entirely satisfactory, due to
slight drifting in frequency and critical tuning, although in the hands of
experienced operators good results were obtained. After the first few days,
during which the transmitter was completely overhauled, replacing magnetron
and several other bad or weak tubes, the operation of the SJ was good. The
troubles encountered were usually found during routine checks made each day,
and consisted largely of bad tubes.

As a great deal of switching between SJ and ST was done, it was found that
the SJ did not gain full sensitivity for some time when shifting from ST to
SJ. This was remedied by connecting the voltage to the SJ local oscillator
as a permanent connection, the ST local oscillator being similarly connected
on installation.

On two occasions ranges were obtained with the SJ that are considered ex-
ceptional. On May 29 a SCS-1 close subchaser was tracked at 18,000 yards, and
on June 7 a medium sailboat was picked up at 15,000 yards. No atmospheric
disturbances were noted and other ranges were normal in both cases. It is
thought that radar reflectors may have been used by the targets.

The troubles in the ST were again limited to tubes. It is felt that far
too much power is lost in the periscope and antenna, and that a modified
antenna with less power loss and some bearing accuracy is very desirable.

The SD-5 was keyed once a night, on surfacing, and when the presence of
planes was suspected. Maintenance consisted of tube replacements, including
one set of oscillator tubes. Operation was fair.

(Second Half of Patrol)

The SD-5 was rarely used. It obtained ranges on planes to 30 miles,
though it could miss low flying planes. Land ranges beyond 60 miles, were
obtained. IFF was not used, though BN was kept in standby with SD at all
times. T-1 in the BN shorted out July 17 and as no spares were carried, the
BN was out the last three days of the patrol.

SJ operation was satisfactory and maintenance normal. T-1 in the PPI unit
shorted out and was replaced just before leaving Fremantle and R-44 in the PPI
burned out three days later.

The ST was used an increasing amount, due to almost certain DF-ing of the
SJ, as indicated by flashing lights on the beach and complete absence of small
craft in SUNDA Strait when SJ was used, as against the heavy traffic when ST was
not. Tuning stability was the best yet obtained with this gear, though it had
to be adjusted several times. A minelayer was picked up on ST at 9000 yards
with the ship at 58 feet (initial attempt) and land ranges to 35,000 yards
were obtained.

— page 217 —
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- I need to be accurate with spelling, capitalization, and line breaks.
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**Transcription Breakdown:**
1.  **C-O-N-F-I-D-E-N-T-I-A-L**: This is the first line, clearly visible.
2.  **Subject: USS BLUEBACK (SS326), Report of War Patrol Number THREE.** : This is the second line, also clear.
3.  **

— page 220 —
C-O-N-F-I-D-E-N-T-I-A-L

Subject: USS BLUEBACK (SS326), Report of War Patrol Number THREE.

R. MILES STEAMED - FUEL USED:

FREMANTLE to Area #1

— page 223 —
FC5-22/A16-3 SUBMARINE SQUADRON TWENTY-TWO OO/rr
Serial 0182 Care of Fleet Post Office,
San Francisco, California,
CONFIDENTIAL 22 July 1945.

FIRST ENDORSEMENT to
U.S.S. BLUEBACK (SS326) -
Report of Third 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. BLUEBACK (SS326) - Report of Third War Patrol.

1. The third war patrol of the U.S.S. BLUEBACK (SS326)
under the command of Commander H.K. CLEMENSEN, U.S.N., commenced
12 May 1945 and was conducted in the JAVA SEA area. The patrol was
made in two parts; a return to FREMANTLE, WESTERN AUSTRALIA, was
ordered for replacement of doubtful torpedoes after twenty-two days
spent in assigned area. The second half of the patrol was of thirty
days duration, arriving SUBIC BAY, LUZON, P.I., 20 July 1945, a total
of forty-eight days being spent in patrol areas.

2. Area coverage was excellent and resulted in numerous
contacts. Two contacts with a HACHI class CA and escorting DD could
not be developed into attacks due to restrictions to navigation and
high speed of the target. All other worthwhile torpedo targets were
aggressively attacked. Six gun attacks including a bombardment of
DISCOVERY BAY marked this long and active patrol. Two special
missions were expertly and expeditiously accomplished. Numerous con-
tacts with small SD type cargo carriers, too small for torpedoes, in-
dicate a traffic trend that might be effectively dealt with by a pack
of two gun submarines.

3. Gun Attack #1. On the night of 21 May, the BLUEBACK
encountered two A/S patrols, one of PC class with an unidentified
companion, and opened fire with 5" gun, range 5700 yards, obtaining
a hit on the PC on third salvo. Both targets returned fire with
machine guns and a larger deck gun. Fire was alternated at each until
their return fire became too accurate, whereupon BLUEBACK retired in
a smoke screen. Expended 24 rounds; one positive, two possible hits.

Torpedo Attack #1. On 28 May, in a night surface radar
attack, BLUEBACK fired 5 Mk. 18-2 bow shots, at what was thought to be
an old DD but later indentified as a 100 ton SC, track 94°P, small
gyros, depth set 6', 3° total spread, torpedo run 3000 yards. No
hits. Swung for stern tube salvo of 2 Mk. XIV-3 torpedoes, torpedo
run 2000 yards, depth set 6', 2° spread. All torpedoes missed, pro-
bably under-running small target.

- 1 -

— page 224 —
FC5-22/A16-3 SUBMARINE SQUADRON TEN 00/rr
Serial 0182 Care of Fleet Post Office,
San Francisco, California,
CONFIDENTIAL 22 July 1945.

Subject: U.S.S. BLUEBACK (SS326) - Report of Third War Patrol.

— page 226 —
FE24-71/A16-3
UNITED STATES NAVY
12/mn
Serial 0338-A
30 July 1945.
C-O-N-F-I-D-E-N-T-I-A-L

SECOND ENDORSEMENT to:
USS BLUEBACK Conf. Ltr.
A16-3 Serial 017, dated
21 July 1945. Report of
Third War Patrol.

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

Subject: U.S.S. BLUEBACK (SS326) - Report of Third War
Patrol - Comment on.

1. The Third War Patrol of U.S.S. BLUEBACK (SS326)
Commander M. K. CLEMENTSON, U.S.N., was conducted in the JAVA
SEA Area. The Patrol was of 70 days duration, being broken by
a return to FREMANTLE, where 7 days were spent in checking un-
satisfactory torpedoes and installing a second 5-inch gun. A
total of forty eight days were spent in patrol areas.

2. Remarks in paragraph two of First Endorsement are
concurred in. The very effective smoke producer described in
Section K and 7 was used to good effect in night evasion. Further
study of this installation with view to adoption in all submarines
is indicated.

3. The award of the Submarine Combat Insignia for this
patrol is authorized for personnel completing either or both parts
of this patrol.

4. The Force Commander deeply regrets the unfortunate
death of Ensign J. T. BEAHAN, U.S.N., and extends the sympathy of
this Force to BLUEBACK in the loss of this fine officer.

5. The Force Commander congratulates the Commanding
Officer, Officers and Crew of the U.S.S. BLUEBACK on the completion
of this long and aggressive patrol. BLUEBACK is credited with
having inflicted the following damage upon the enemy:

- 1 -

— page 227 —
FE24-71/A16-3
Serial 0338-A
CONFIDENTIAL

SECOND ENDORSEMENT to:
USS BLUEBACK Conf. Ltr.
A16-3 Serial 017, dated
21 July 1945. Report of
Third War Patrol.

Subject: U.S.S. BLUEBACK (SS326) - Report of Third War
Patrol - Comment on.

— page 228 —
FE24-71/A16-3
Serial 0338-A
[STAMP: CONFIDENTIAL]

SECOND ENDORSEMENT to:
USS BLUEBACK Conf. Ltr.
A16-3 Serial 017, dated
21 July 1945, Report of
Third War Patrol.

Subject: U.S.S. BLUEBACK (SS326) - Report of Third War
           Patrol - Comment on.

— page 229 —
UNITED STATES FLEET
COMMANDER SEVENTH FLEET

A16-3(8) (F-3c/ob)                                                15 AUG 1945
Serial: 05545

C-O-N-F-I-D-E-N-T-I-A-L                                          [STAMP: REG. NO] [HANDWRITTEN: F2431]
                                                                 [STAMP: R. S. NO] [HANDWRITTEN: 8 03452]
THIRD ENDORSEMENT to:                                            [STAMP: REG. SHEET NO] [HANDWRITTEN: 220]
CO, USS BLUEBACK conf ltr
SS326/A16-3, serial 017,
dated 21 July 1945.

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

Subject:      U.S.S. BLUEBACK (SS326), Report of War Patrol
              No. Three - comment on.

1.            Forwarded.

2.            The Commander Seventh Fleet congratulates the
BLUEBACK on this aggressive patrol and notes with satisfaction
the judicious and effective use of the topside armament of
this vessel.

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

Copy to:
ComSubSo7th
ComSubRon 21
CO USS BLUEBACK                                                  [STAMP: RECEIVED]
                                                                 [STAMP: 24 AUG 1945]
                                                                 [STAMP: COMMANDER IN CHIEF]
                                                                 [STAMP: U. S. FLEET]

— page 230 —
END OF REEL
JOB NO. [HANDWRITTEN: F-108]
[HANDWRITTEN: AR-94-78]

[Microfilm resolution chart numbers:]
1.0
1.1
1.25 1.4 1.6
2.8 2.5
3.2 2.2
3.6 2.0
4.0 1.8

THIS MICROFILM IS
THE PROPERTY OF
THE UNITED STATES
GOVERNMENT

[Seal text:]
DEPARTMENT OF DEFENSE
UNITED STATES OF AMERICA

MICROFILMED BY
NPPSO-NAVAL DISTRICT WASHINGTON
MICROFILM SECTION

D-62264

— page 231 —
START OF REEL
JOB NO. [HANDWRITTEN: AR-53-81]
[HANDWRITTEN: E. 108]

1.0
1.1
1.25
1.4
1.6

2.8
3.2
3.6
4.0

2.
2.2
2.0
1.8

OPERATOR [HANDWRITTEN: L. Frye]
DATE [HANDWRITTEN: 5-5-81]

THIS MICROFILM IS
THE PROPERTY OF
THE UNITED STATES
GOVERNMENT

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

MICROFILMED BY
NPPSO-NAVAL DISTRICT WASHINGTON
MICROFILM SECTION

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

— page 232 —
[HANDWRITTEN: WAS PM-119]

[HANDWRITTEN: BLUEBACK (SS-36)]
[HANDWRITTEN: WWII REPORT FILE]

[HANDWRITTEN: ALL MATERIAL ON THIS REEL IS DECLASSIFIED]

[HANDWRITTEN: 16MM]

— page 233 —
DATE 12 May-2 June 1945 NAME BLUEBACK
FROM CO - USS BLUEBACK(SS-326)
SERIAL 0003
DATE none
SUBJECT TORPEDO FIRING Reports

Reports of firings of Mark 27 Torpedoes on THIRD WAR
PATROL are forwarded together with chronological
report of circumstances. Two misses, two hits.
(SOWESPAC: SUB OPS)
FILED: War Diary

Separately as ORIGINAL; as PROCESSED COPY

MICROSERIAL NO. ACTION REPORT OPRY FORM 363-13 (11-55)
A

DATE 28 May 1945 NAME BLUEBACK
FROM Commanding Officer USS BLUEBACK(SS-326)
SERIAL 011
DATE 14 June 1945
SUBJECT SPECIAL MISSION

Report(to CTF 71) of landing of agent near Piring Point on
north Java coast. Mission, during THIRD WAR PATROL, was
successful.
(SOWESPAC: SUB OPS)
FILED: War Diary

Separately as CARBON COPY

MICROSERIAL NO. ACTION REPORT OPRY FORM 363-13 (11-55)
G 20432
A

DATE 29 June-3 July 1945 NAME BLUEBACK
FROM CO - USS BLUEBACK(SS-326)
SERIAL 0005
DATE 12 July 1945
SUBJECT Special Mission, Report of

Chronological report of special missions on THIRD WAR
PATROL. Agents landed on north coast of Java on 29
June and on south coast of SUMATRA 2 July 1945.
(SOWESPAC: US SUB OPS)
FILED: War Diary

Separately as ORIGINAL; as PHOTOSTAT(O)

(OVER)
MICROSERIAL NO. ACTION REPORT OPRY FORM 363-13 (11-55)
A

— page 234 —
SS326/A16-3
serial ( 0003 )
DECLASSIFIED

U.S.S. BLUEBACK (SS326)
Care of Fleet Post Office
San Francisco, California
En.

From: The Commanding Officer.
To : The Commander-in-Chief, UNITED STATES FLEET.
Via : (Official Channels).

Subject: U.S.S. BLUEBACK Top Secret Reports on Firing Mark 27
Torpedoes, War Patrol Number THREE.

Enclosure: (A) Subject Report.

1. Enclosure (A) is forwarded herewith.

[SIGNATURE: M. K. CLEMENTON]

— page 235 —
S-E-C-R-E-T
-----

Subject: USS BLUEBACK (SS326); Report of Firing of Mark 27 Torpedoes,
         War Patrol Number THREE.

A. PROLOGUE:

         Arrived in Fremantle, W.A., on April 17, 1945 and commenced normal refit.
         Conducted training exercises 3 - 12 May, during which time the torpedo officer
         and two loading torpedoman's mates spent one day at Subiaco Naval Torpedo
         Station receiving instructions in the maintenance of Mk. 27's. This condensed
         and practical course was well worth while. During underway training, spent one
         day firing four Mk. 27 exercise shots with an officer representative from Subiaco
         aboard. Much valuable experience was gained by ship's personnel in torpedo
         handling, making ready, and firing the torpedoes; and by the Subiaco personnel in con-
         ducting attacks. On May 11, 1945 loaded five Mk. 27's in after torpedo room
         preparatory to departure on patrol. Torpedoes were stowed as follows: One in
         #10 tube, two each in the two lower skids. No difficulty was experienced in
         loading.

         The officers and enlisted personnel of the Mk. 27 shop at Subiaco were most
         helpful and cooperative in every way; and much of the subsequent success of this
         vessel in using the Mk. 27 was due to their efforts.

                                                              ENCLOSURE (A)

                                        - 1 -

— page 236 —
S-E-C-R-E-T

Subject: USS BLUEBACK (SS326), Report of Firing of Mark 27 Torpedoes,
War Patrol Number THREE.

B. NARRATIVE:

12 May 1945 (I)
1630 Departed FREMANTLE enroute area E-8 in accordance CTF-71 secret
operation order #66-45 dated 11 May 1945 and enclosures thereto.

26 May 1945 (I)
2239 In compliance CTF-71 despatch 260316 (serial GEORG), set course for
area E-2.

31 May 1945 (I)
0704 Submerged in area E-2 just north of entrance to SUNDA Strait.
1200 Posit 5°48'S, 106°00'E.
1343 Sighted smoke 123° T.
1510 Identified smoke as 100 ton SUGAR DOG Type, the pride of the Jap
merchant fleet. Target not worth a torpedo attack but decided to test
fire a Mk 27 torpedo. Don't believe anything else can hit him and
a gun attack in broad daylight in the center of the strait is not
advisable.
1555 Target not zigzagging and is unescorted. Went to battle stations and
commenced approach.
1635 Went to 120 feet. Target on course 278° T, speed 5 knots. S/M on
course 200° T.
1639 Fired one Mk. 27 Torpedo from #9 tube, target bearing 300° relative,
range 700 yards.
No result. Target continued on course undisturbed. Decided to make
one more attempt.
Changed course to 235° T and closed target at full speed.
1701 Fired one Mk. 27 torpedo from #10 tube, target bearing 357° relative,
range 900 yards.
No result. Target continued undisturbed. Post analysis indicates that
both misses were probably due to the fact that since the target was
forward of the beam, the torpedoes left the sound intensity field be-
fore the sound governing system took effect.

- 2 -

— page 237 —
S-E-C-R-E-T
-----
Subject: USS BLUEBACK (SS326), Report of Firing of Mark 27 Torpedoes,
         War Patrol Number THREE.
-----
B. NARRATIVE (Continued)
-----
2 June 1945 (I)

0704   Submerged at entrance to SUNDA Strait.

0928   Sighted convoy of two medium AK's with 3 miscellanous escorts bearing
       115° T, 12,000 yards.

1045   Commenced approach and at

1105   attacked second AK with 3 mark 18-2's. Obtained one timed hit in AK
       and two circular runs over submarino. Lost depth control, preventing
       further attack, so went to 200 feet (depth of water 210 feet) and rigged
       for depth charge.

1113   Heard odd explosion from direction of freighter target. Possibly ship-
       board explosion caused from our torpedo hit or maybe a circular torpedo
       straightened out and connected (14,000 yards from the beach).

1116   Nearest PC escort (identified by periscope as PC-4 class while making
       approach) pinging on us and coming in on constant bearing 000° T, 315°
       relative, range about 700 yards. Fired one Mk. 27 torpedo from #9 tube.

1119-30 Heard loud close explosion from bearing of target followed by complete
       loss of screw noises.

1120   Crackling noises from escort's bearing stopped abruptly with four loud,
       practically simultaneous, explosions on that bearing. Nothing more was
       heard of this attacker. After this counterattack, both the remaining
       escorts remained well clear for ten minutes, but at

1130   Depth charge. #2 escort began coming in fast on bearing 218° T, 180°
       relative.

1132   Depth charge. Fired one Mk. 27 torpedo from #10 tube.

1133-30 Depth charge.

1133-36 Possible hit. Not a depth charge explosion. Escort's screws stopped.
       No more breaking up noises were heard, but no more screws were hoard on
       this bearing and this attacker did not bother us again. #3 escort, who
       had remained clear during the attacks by #1 and #2 escorts, now began
       dropping single charges, but he was extremely timid and refused to close
       to a suitable firing range at any time.

1230   #3 escort secured dropping charges and departed.

                                  - 3 -

— page 238 —
S-E-C-R-E-T

USS BLUEBACK Mark 27 Torpedo Attack No. [HANDWRITTEN: 1] Patrol No. [HANDWRITTEN: 3]
Time [HANDWRITTEN: 1639] Date [HANDWRITTEN: 31 May 1945] Lat. [HANDWRITTEN: 5°47.5'S] Long. [HANDWRITTEN: 106°03.5'E]
Sound conditions [HANDWRITTEN: Poor] Depth of water [HANDWRITTEN: 210']
Distance to nearest shore or reef [HANDWRITTEN: 20,000 yds.] Sea condition [UNCLEAR: 1]
Was it raining? [HANDWRITTEN: No]

TARGET DATA - DAMAGE INFLICTED

Description
  Small single ship, SUGAR DOG. Contacted by periscope
  good visibility. Target was not zigzagging and was
  unescorted.

Ships sunk [HANDWRITTEN: None]
Ships damaged [HANDWRITTEN: None]
Damage determined by [HANDWRITTEN: -----]

Target draft [HANDWRITTEN: 10'] Course [HANDWRITTEN: 278°] Speed [HANDWRITTEN: 5] Range [HANDWRITTEN: 700 yds.] (at firing)
Target turn count [HANDWRITTEN: 166] Target bearing at firing instant [HANDWRITTEN: 300° (relative)]
Give any peculiarities noted in target's sound output [HANDWRITTEN: No Peculiarities]

- 4 -

— page 239 —
S-E-C-R-E-T

OWN SHIP DATA
Speed 3.5 Course 200° Depth 120' Angle 0° (at firing)

FIRE CONTROL & TORPEDO DATA
Was target aware of submarine's presence? No
Was submarine being depth charged? No
Type Attack: Torpedo was fired when sound intensity increased sharply, but
as the target bearing was forward of the beam and was drawing
ahead the torpedo may have left the intensity field before the
sound governing system took effect. Firing point was deter-
mined by JP intensity level meter.

Time of firing 1639 Tube number 9
Time of hit --- Erratic (yes or no) No
JP decibel meter indication at firing 15
JP decibel meter indication 1 minute after firing 17
JP decibel meter indication 2 minutes after firing 22
JP Gain 8 Filter Band 6,000 cycles
Mark torpedo 27 Serial No. 582
Mark warhead --- Serial No. ---
Mark exploder 11 Serial No. 98
Arming distance set: 100 yards
Issuing activity: U.S. Naval Torpedo Station, Subiaco, W. A.
COMMENTS: During patrol maintenance instructions were carefully followed
and no difficulty was experienced in charging and upkeep. The
torpedo was thoroughly checked for readiness before firing and
torpedo run was normal insofar as is known.

- 5 -

— page 240 —
S-E-C-R-E-T

ADDITIONAL DATA REQUESTED BY CTF-71
DESPATCH 240346 of JUNE 1945

Length of time after firing that target screws were heard: 34 minutes.
Closest approach of target to launching point: 500 yards.
Time closest approach occurred: One minute after firing.
Other noise sources heard during 15 minute period after firing: Normal water
                                                                   noises.
Distance off target's track at launching point: 500 yards.

- 6 -

— page 241 —
S-E-C-R-E-T

USS BLUEBACK Mark 27 Torpedo Attack No. [HANDWRITTEN: 2] Patrol No. [HANDWRITTEN: 3]
Time 1701 Date 31 May 1945 Lat. 5°47.5'S Long. 106°03.5'E
Sound conditions Poor Depth of water 210'
Distance to nearest shore or reef 20,000 yds. Sea condition [HANDWRITTEN: 1]
...as it raining? No

TARGET DATA - DAMAGE INFLICTED

Description Small single ship, SUGAR DOG. Contacted by periscope
good visibility. Target was not zigzagging and was
unescorted.

Ships sunk: None
Ships damaged: None
Damage deter-
mined by: -----
Target draft 10' Course 278 Speed 5 Range 900 yds. (at firing)
Target turn count [HANDWRITTEN: 166] Target bearing at firing instant 357° (Relative)
Give any peculiarities noted in target's sound output No Peculiarities

- 7 -

— page 242 —
S-E-C-R-E-T

OWN SHIP DATA
Speed 3 Course 235 Depth 120' Angle 0° (at firing)

FIRE CONTROL & TORPEDO DATA
Was target aware of submarine's presence? No
Was submarine being depth charged? No

Type Attack: This was second attack on target of Attack No. 1. When it
was apparent that first Mark 27 had failed to hit, attempted
to close target from his starboard quarter to a suitable
firing range. Target speed 4.5 knots.

Time of firing 1701 Tube number 9
Time of hit Erratic (yes or no) No
JP decibel meter indication at firing: 12
JP decibel meter indication 1 minute after firing: 10
JP decibel meter indication 2 minutes after firing: 9
JP Gain 8 Filter Band 6000 cycles
Mark torpedo 27 Serial No. 496
Mark warhead Serial No.
Mark exploder 11 Serial No. 1771
Arming distance set: 100 yards
Issuing activity: U.S. Naval Torpedo Station, Subiaco, W. A.

COMMENTS:
During patrol maintenance instructions were carefully followed
and no difficulty was experienced in charging and upkeep. The
torpedo was thoroughly checked for readiness before firing and
torpedo run was normal insofar as is known.

- 8 -

— page 243 —
S-E-C-R-E-T
ADDITIONAL DATA REQUESTED BY CTF-71
DESPATCH 240346 of JUNE 1945

Length of time after firing that target screws were heard: 12 minutes.

Closest approach of target to launching point: 900 yards.

Time closest approach occurred: At firing.

Other noise sources heard during 15 minute period after firing: Normal water
noises.

Distance off target's track at launching point: 700 yards.

- 9 -

— page 244 —
S-E-C-R-E-T
USS BLUEBACK Mark 27 Torpedo Attack No. [HANDWRITTEN: 3] Patrol No. [HANDWRITTEN: 3]
Time 1116 Date 2 June 1945 Lat. 5°51'S Long. 105°54'E
Sound conditions Fair Depth of water 250'
Distance to nearest shore or reef 15,000 yds. Sea condition 1
Was it raining? No

TARGET DATA - DAMAGE INFLICTED

Description
Target was one of three PC escorts screening a convoy of 2
medium Marus. It was identified by periscope as of the PC-4
class. Original contact on convoy was by JP. Good visibility.

Ships sunk: One (Probable)
Ships damaged: None

Damage deter-
mined by: Heard loud explosion from bearing of target 3.4 minutes after
firing, and complete loss of screw noises on that bearing.
The original explosion was followed by several more rapid
explosions from the direction of the target as depth charges
fell off target's stern.

Target draft 5 Course 140° Speed 15 Range 700 (at firing)
Target turn count 200 Target bearing at firing instant 316° (Relative)
Give any peculiarities noted in target's sound output No Peculiarities

- 10 -

— page 245 —
S-E-C-R-E-T

OWN SHIP DATA

Speed 3 Course 140° Speed 15 Range 700 (at firing)

FIRE CONTROL & TORPEDO DATA

Was target aware of Submarine's presence? Yes
Was submarine being depth charged? No
Type Attack: Fired on steady, strong JP contact with full scale d.b. meter
deflection. Target was making a run on us and closing fast,
pinging as he came in.
Time of firing: 1116 Tube number 9
Time of hit: 1119-30 erratic (yes or no): No
JP decibel meter indication at firing: Full scale intensity.
JP decibel meter indication 1 minute after firing: Full scale intensity.
JP decibel meter indication 2 minutes after firing: Full scale intensity.
JP Gain 8 filter Band 6000 cycles
Mark torpedo 27 Serial No. 639
Mark warhead: - - - - Serial No. - - - -
Mark exploder: 11 Serial No. 1770
Issuing activity U. S. Naval Torpedo Station, Subiaco, W. A.

COMMENTS:
1116 with the nearest escort coming in, range about 700 yards,
fired one Mk 27 torpedo. 1119-30 one explosion (did not sound
like depth charge) from astern starboard about 70° on the bear-
ing of the attacking escort. Escort's screws stopped immediately.
1120 Crackling noises from escort's bearing stopped suddenly with
four practically simultaneous depth charge explosions on that
bearing. Nothing further was heard from this attacker.

NOTE:
During patrol maintenance instructions were carefully followed
and no difficulty was experienced in charging and upkeep. The
torpedo was thoroughly checked for readiness before firing.
Torpedo run was normal, insofar as is known.

- 11 -

— page 246 —
S-E-C-R-E-T

USS BLUERCK Mark 27 Torpedo Attack No. [HANDWRITTEN: 4] Patrol No. [HANDWRITTEN: 3]
Time [HANDWRITTEN: 1133] Date [HANDWRITTEN: 2 June 1945] Lat. [HANDWRITTEN: 5°54.5'S] Long. [HANDWRITTEN: 105°54.5'E]
Sound conditions [HANDWRITTEN: Fair] Depth of water [HANDWRITTEN: 250']
Distance to nearest shore or reef [HANDWRITTEN: 15,000 yds.] Sea condition [HANDWRITTEN: 1]
Was it raining? [HANDWRITTEN: No]

TARGET DATA - DAMAGE INFLICTED

Description
One of two remaining escorts dropping depth charges after Attack
No. 3. Exact description unknown, probably similar to the PC-4
of Attack No. 3.

Ships sunk: [HANDWRITTEN: None]

Ships damaged: [HANDWRITTEN: One (Probable)]

Damage deter-
mined by: [HANDWRITTEN: Loud explosion from bearing of target, followed by loss of]
[HANDWRITTEN: screws on that bearing.]

Target draft [HANDWRITTEN: --] Course [HANDWRITTEN: 270°] Speed [HANDWRITTEN: 15] Range [HANDWRITTEN: 800 yds. (at firing)]

Target turn count [HANDWRITTEN: 200] Target bearing at firing instant [HANDWRITTEN: 180° (Relative)]

Give any peculiarities noted in target's sound output [HANDWRITTEN: No Peculiarities]

- 12 -

— page 247 —
S-E-C-R-E-T

OWN SHIP DATA

Speed 3 Course 270° Speed 15 Range 800 yds. (at firing)

FIRE CONTROL & TORPEDO DATA

as target aware of submarine's presence? Yes

Was submarine being depth charged? Yes

Type Attack: Again fired on steady, strong JP contact, which was beginning
to weaken at time of firing.

Time of firing: 1116 Tube number: 10

Time of hit: 1135-30 Erratic (yes or no): No

JP decibel meter indication at firing: 15

JP decibel meter indication 1 minute after firing: 10

JP decibel meter indication 2 minutes after firing: 9

JP Gain 8 Filter Band 600 cycles

Mark torpedo 27 Serial 577

Mark warhead --- Serial No. ---

Mark exploder 11 Serial No. 1793

Arming distance set 100 yards

Issuing activity U.S. Naval Torpedo Station, Subiaco, W. A.

COMMENTS: After attack #3 the two remaining escorts stayed well clear for
ten minutes, but at 1130 #2 escort began dropping single charges
while commencing a run from the port quarter. 1132 With #2 escort
coming in fast, fired one Mk 27 torpedo. 1133-30 depth charge.
1133-36 Possible hit. Not a depth charge explosion. Escorts
screws stopped. No breaking up noises were heard, but no more
screw noises were heard on this bearing and this fellow did not
bother us again. #3 escort, who had remained clear during the
attacks by #1 and #2 escorts, now began dropping single charges,
but he was very timid and refused to close to a suitable firing
range at any time. 1230 #3 escort secured dropping charges and
departed.

NOTE: During patrol maintenance instructions were carefully followed and
no difficulty was experienced in charging and upkeep. The torpedo
was thoroughly checked for readiness before firing. Torpedo run
was normal, insofar as is known.

- 13 -

— page 248 —
FE24-71/A16-3
SERIAL 00101-A
S-E-C-R-E-T

UNITED STATES NAVY
12/mn

10 August 1945.

FIRST ENDORSEMENT to:
U.S.S. BLUEBACK Secret
Letter A16-3 Serial 0003,
No date.

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

Subject: U.S.S. BLUEBACK Secret Report on Firing Mark 27
torpedoes, War Patrol Number THREE.

Enclosure: (A) Subject Report.

1. Enclosure (A) is forwarded herewith.

2. Four Mark 27 torpedoes were fired on this patrol.
The first two were fired at a small 250 ton Sugar Dog north of
SUNDA STRAIT. Both failed to hit. The third torpedo hit and
sank an attacking PC escort. The fourth torpedo apparently hit
and damaged a second escort vessel engaged in the same attack.

3. The following damage is assessed:

SUNK
1 Escort Vessel PC-4 (EU) 270 Tons.

[STAMP: RECEIVED S-U-B-S]
[HANDWRITTEN: 23 AUG 205]
[HANDWRITTEN: File to 1 SEP 1945]
[HANDWRITTEN: Sp File No. (ov) S-5-1-155.326]
[HANDWRITTEN: Loc. No. 184695]
[HANDWRITTEN: App By. 2.15]
[HANDWRITTEN: Ck. By.]

DAMAGED
1 Escort Vessel PC-4 (EU) 270 Tons.
Total 540 Tons.

JAMES FIFE.

DISTRIBUTION:
Cominch (2) ComSubsLant (2)
CNO (2) ComSubs7thFlt (2)
CinCPac (2) All Squad Coms (1)
ComSubsPac (2) All Div Coms (1)
ComSubsPacAdComd (2) BuOrd (2)
ComSubsTrainPac (2) BuShips (2)
CO USS BLUEBACK (1 copy of endorsement only).

J. B. MILLER,
Flag Secretary.

— page 249 —
[STAMP: DECLASSIFIED]
U.S.S. BLUEBACK (SS326)
Care of Fleet Post Office
San Francisco, California

Serial O11
14 June 1945.

[CONFIDENTIAL]

From: The Commanding Officer.
To: The Commander Task Force, SEVENTY-ONE.

Subject: U.S.S. BLUEBACK (SS326), Report of Special Mission.

Reference: (a) Annex "D" to CTF-71.1 Operation Order #66-45.

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

Enclosures (A) and (B), covering the special mission
conducted in the vicinity of PIRING POINT, north JAVA coast, on 28 May
1945, is forwarded herewith.

[HANDWRITTEN (vertical on right margin): Confidential File # BOX # 735-45-5RS # FILE # 880 JACKET # 896]

CONFIDENTIAL - OPNAV INST 5500.30
BY: [HANDWRITTEN: K] DATE [HANDWRITTEN: 10-4-60]
M.K. CLEMENTSON.

— page 250 —
T-I-C-I-I-I-I

U.S.S. BLUESICK (SS326), Report of special mission.

PROLOGUE:

Prior to departure on the third war patrol of this vessel, 12 May 1945,
we embarked Pte. J.E. BUXTON, A.I.B. operative and his equipment. The
operative had been briefed on all relevant intelligence information by
his superiors before embarkation. His equipment consisted of the following:

(a). 1 Native Prahu (about 8' long, hollowed from a wooden log).
(b). 1 Drogue.
(c). 50 Yards of fishing line.
(d). 1 Pair of pliers (old), waterproof cloth.
(e). 1 Pair of pyjama trousers.
(f). 1 White shirt.
(g). 1 Pair Indonesian sandals.
(h). 2 Sarongs.
(i). 1 Tengkolok, black.
(j). 1 Belt, leather.
(k). 1 Knife, used.
(l). 1 Compass, hunter's.
(m). 120 Quinine tablets.
(n). 1 White coat.
(o). 1 .32 automatic pistol.
(p). 50 Rounds .32 ammunition.
(q). Fl 1200 Genuine NEI currency.
Enroute to the area BUXTON was given a daily treatment with the ship's
sun lamp to add veracity to his future appearance as a dark skinned Java-
nese.

— page 251 —
T-O-P S-E-C-R-E-T
U.S.S. BLUEBACK (SS326), Report of Special Mission.

NARRATIVE:

28 May 1945 (I)

0245 In position about 5 miles off JAVA north coast near FIRING
     POINT. (Posit 6°30'S, 110°40'E).

0253 c/c 140° and headed for beach at standard speed.

0300 Sighted light on beach at 095° T. Stopped. Light apparently
     a native torch or fire, so proceeded.

0304 Stopped. Position about 3500 yards bearing 320° T from FIRING
     POINT in 8 fathoms of water. Sea calm; weather clear; bright
     moonlight. Ready to disembark A.I.B. operative, J.J. BUXTON.
     Prior to this time, BUXTON had donned native dress, his equip-
     ment had been checked for completeness and incriminating mate-
     rial had been rechecked by the Executive Officer from the
     Sailing Directions and available charts. His gun, ammunition and
     money, which had been held for safekeeping, were returned to
     him. The gun was placed in the small of his back inside the
     waistband of his sarong, the silver was bagged and placed
     inside his shirt and the paper money was taped to his thigh.
     As a result of this care, no suspicious sagging or bulges were
     visible and BUXTON's appearance was that of a small slightly
     bedraggled native of JAVA.

0315 Opened forward torpedo room hatch to pass BUXTON's prahu and
     gear on deck.

0320 Lookouts and high periscope sighted three small sailboats
     bearing 150° T. They carried torches, made no closer approach
     than 2500 - 3000 yards and upon continued examination appeared
     to be fishing near the reefs extending out from FIRING POINT.

0321 On lowering the prahu into the water by rope sling near the
     forward sea ladder, it was observed to have a precariously
     small freeboard. Then BUXTON, a very small individual, attempted
     to sit in the prahu, it promptly submerged stern first. After
     salvage and emptying of the prahu, another attempt was made to
     use it. BUXTON boarded carefully, taking care to balance amidships.
     Success appeared imminent when a small wave broke over the 2-3
     inches of freeboard. BUXTON, by a wild leap, gained the safety
     of the sea ladder at a waist deep level. Since the prahu was
     obviously unsuitable and unseaworthy, it was decided to use a
     rubber life raft instead. Instructed him in means of deflation
     and disposal of raft on reaching beach, and provided old pocket
     knife to cut it up.

— page 252 —
T-O-P S-E-C-R-E-T

U.S.S. BLUEBACK (SS326), Report of Special Mission

NARRATIVE: (Continued)

0332        BUXTON debarked in rubber life raft with a single paddle,
            after assuring us that one paddle was sufficient. After
            watching the raft turn in circles for several minutes, decided
            to pull alongside and present him with two oars and two
            rowlocks.

0345        Results were highly successful. Two oars are being used.
            BUXTON now underway for beach between FIRING POINT and
            SPINDOCK POINT.

0355        With BUXTON nearly to beach, gave left full rudder and headed out
            at standard speed to clear vicinity. Bright moonlight, good
            visibility, the presence of ships in JAPARA roads and
            and probability of roaming patrol vessels, made this an unhealthy
            place to play sitting duck.

0500        Jettisoned the defective prahu over the side 10 miles from
            coast of Java.

REMARKS:
            More important contacts prevented earlier accomplishment of this mission.
            No contacted patrol vessel 20 miles from point of debarkation and
            tracked him well clear of the scene. It is reasonably certain that the landing
            was undetected.

            It is unfortunate that the prahu was inadequate. BUXTON was agreeable
            to the use of either one of our two, aircraft type, 7 man rubber boats
            and was thoroughly conscious of the importance of destroying and hiding it.

7.

— page 253 —
SS326/A16-3
[STAMP: DECLASSIFIED]
Serial ( 0003 )

From:
To :
Subject:

Reference:

Enclosure:

1.
Enclosures (A) through (E), covering two special missions
conducted off north coast of JAVA and south coast of SUMATRA on 29 June
1945 and 2 July 1945, respectively, during the third war patrol of this
vessel, are forwarded herewith.

Bn.

U.S.S. BLUEBACK (SS326)
Care of Fleet Post Office
San Francisco, California

12 July 1945.

The Commanding Officer.
The Commander Task Force SEVENTY-ONE.

U.S.S. BLUEBACK (SS326), Report of Special Mission, War
Patrol Number THREE.

(a) Annex "D" to CTG-71.1 modified Opr. Order #66-45.

(A) Subject Report.
(B) Statement of Escorting AIB Officer Concerning CREWE
Landing.
(C) Statement of Escorting AIB Officers Concerning DOVER
Landing.
(D) Identification Papers and Native Clothing Taken From
Lugger on 9 July.
(E) Track Chart.

[SIGNATURE: M. K. Clementson]
M. K. CLEMENTSON.

— page 254 —
T-O-P
S-E-C-R-E-T

Subject: USS BLUEHACK (SS326), Report of Special Mission, War Patrol
         Number THREE.

PROLOGUE:

     On 14 June 1945, this vessel arrived in FREMANTLE for reload of torpedoes
and voyage repairs before continuing the third war patrol.

     On 20 June 1945, prior to departure from FREMANTLE on the second phase
of the third war patrol, embarked the DOVER and CREWE parties of S.I.A.
Section, A.I.B. These parties consisted of two (2) officers and four (4)
asiatics as follows:

          Lt. K. C. GILLETT, A.I.F.
          Lt. L. NICHOLSON, R.A.N.V.R.

     Agents: SULADMAN, NARUDIN, TAHIR, SIRAD.

     1400 pounds of stores and equipment accompanied the party. This gear, in-
cluding a seven man rubber life raft with outboard motor, 1 three man rubber
life raft and two folding boats was successfully stowed in the pit beneath
the deck in the forward torpedo room.

     The two officers were provided bunks and stowage space in the wardroom,
while the four asiatics were provided with adjacent bunks in the after
torpedo room.

     The original plan called for proceeding first to SEMANKA BAY (5-36-15S,
104-46-30E) on the south coast of SUMATRA and there landing the DOVER party;
then proceeding via SUNDA strait to TANJONG PELABUHAN (6-05-38S, 111-31E) on the
north JAVA coast and there landing the CREWE party. Signals and landing de-
tails were provided for by reference (a).

                                                              ENCLOSURE (A)
                                  - 1 -

— page 256 —
T-O-P S-E-C-R-E-T

Subject: USS BLUEBACK (SS326), Report of Special Mission, War Patrol
         Number THREE.

29 June 1945 (I) (Continued)

1321     Completed photographic runs and preliminary reconnaissance. Headed
         out from beach on 020° T to be clear for surfacing after dark.
         Sailboats were engaged in fishing as far out as 10 miles and the
         escorting A.I.B. officers had impressed us with the necessity of
         avoiding being sighted, so great care was exercised to prevent any
         boat from approaching us too closely. It is believed that we were
         not sighted on the approach to the shore, the reconnaissance runs
         or on the run away from the shore. The A.I.B. party was well
         satisfied with their observations and expressed confidence of a
         successful landing. The selected landing point was a rocky steep
         jutting section of the beach, so selected because it was believed
         least likely to be closely watched. The landing point was quite
         plain at 6000 yards and no difficulty was experienced in making a
         thorough and complete study of the landing point, landmarks, and
         the area adjacent to the landing point. A highway along the beach
         with a white, arched abutment, concrete bridge and prominent,
         native village was observed about 800 yards to the east of the
         landing point. White gradually sloped sand or shingle beaches on
         both sides of the rocky landing point were observed to have
         rectangular concrete obstacles about 10 feet high, so located as
         to prevent or hinder amphibious landings. Good photographs were
         obtained of the landing point and the entire section of beach
         surrounding the landing point which should materially assist any
         future operations at this point.

1928     Sunset.

2004     Surfaced 18 miles from TANJONG PELABUHAN and headed in at 2 engine
         speed on course 189° T. Plans were to debark the landing party at
         about 2200, clear the area, then return and pick up the two escort-
         ing officers about 2300, shortly after moonrise at 2246.

2105     Opened forward deck hatch and commenced bringing agents' gear on
         deck. One folding boat was immediately brought on deck and final
         assembly commenced. When it was certain that all parts were present
         the second boat was brought on deck and both were worked on
         simultaneously while other personnel were bringing the agents'
         special gear on deck. Assembly of boats was smooth and rapid due
         to previous rehearsals with the actual gear while the BLUEBACK was
         in the joint zone enroute to LOMBOK.

2114     With the beach 6500 yards distant, secured the engines and shifted
         to the battery. Proceeding ahead slowly, taking occasional single
         ping soundings with the fathometer. Leadsman standing by on deck
         with leadline ready for use when water gets too shallow for fathom-
         eter.

                                   - 3 -

— page 257 —
T-O-P S-E-C-R-E-T
Subject: USS BLUEBACK (SS326), Report of Special Mission, War Patrol
Number THREE.
29 June 1945 (I) (Continued)

2122 Battle Stations, Gun. Manned both 40mm guns. Both 5" gun crews
     dark adapted and standing by below decks.

2124 Sighted object near beach at 350 relative, range 4000 yards. Object
     appeared to be sailboat and tracked at 2 knots in an easterly direct-
     ion.

2132 Sighted an object at 310 relative. Apparently an anchored sailboat.
     Numerous lights and fires were now visible on the land from beach
     to crest, but the landing point appeared to be clear. Observed
     what could have been an automobile or truck traveling west with
     dimmed lights on the highway above the beach.

2145 Stopped 2500 yards from shore in 5.5 fathoms of water, ready to de-
     bark the CREWE landing party consisting of Lt. K. C. GILLETT, A.I.F.,
     Lt. L. NICHOLSON, R.A.N.V.R., and Agent TAHIR and SIRAD. Sea calm
     with slight swell; wind about 3 knots from the east; sky clear with
     appreciable surface haze around the horizon. Several hours prior
     to this time, while still submerged, all gear to be used by the
     landing party was assembled in one spot in the forward torpedo room.
     The folding boats were assembled insofar as would still allow them
     to pass through the deck hatch and all gear was checked for readi-
     ness and completeness. Recognition signals were agreed upon be-
     tween the escorting officers and the commanding officer, the pass
     words being "doodlebugs" for the landing party and "pink elephant"
     for the submarine. Walkie Talkie sets were tested out, the landing
     party planning to carry one set while another set was manned on the
     bridge of the submarine. As an additional communication safeguard
     it was planned to guard the Walkie Talkie frequency with one of the
     ship's communication receivers.

2146 Boats in the water. Boats were launched by dropping them into the
     water from the forecastle deck level of about six feet. Personnel
     then embarked and the agents' equipment passed down to them. Lt.
     K. C. GILLETT, A.I.F., and Agent TAHIR manned one boat while the
     other was manned by Lt. L. NICHOLSON, R.A.N.V.R., and Agent SIRAD.

2155 Completed loading boats. Landing party departed. Backed clear.

2205 At 4600 yards came about to 020° T, started the engines and headed
     out at 2 engine speed.

2224 Reversed course to 186° T and headed back in.

2239 At 4600 yards shifted to battery. Attempted to make contact on
     Walkie Talkie. No luck.

     - 4 -

— page 258 —
T-O-P
S-E-C-R-E-T
Subject: USS BLUEBACK (SS326), Report of Special Mission, War Patrol
Number THREE.
29 June 1945 (I) (Continued)

2240 SJ radar contact 358° relative, 3600 yards. Another sailboat.
2246 Moonrise.
2258 Second radar contact 310 relative, 1100 yards. Apparently our
       anchored sailboat of the first approach. Still no luck with Walkie
       Talkie.
2308 Stopped 2000 yards from beach in 5 fathoms of water.
2309 Lookout reported two small objects floating in water off starboard
       beam, range about 350 yards.
2310 Objects identified as two small boats.
2311 Challenged boats with password to which they returned the correct
       reply. No contact on Walkie Talkie at any time. Did not pick boats
       up on radar before sighting by lookout. A radar reflector would
       have been helpful in this case.
2315 Boats and two escorting officers safely on board. Backed clear.
2323 At 4500 yards came about to 010° T and started the engines. Headed
       out at two engine speed, enroute for SEMANKA BAY, south coast of
       SUMATRA. The escorting officers reported that the landing operation
       was successful and undetected. They landed about 100 yards east of
       the spot selected by periscope during the preliminary reconnaissance.
       They commented that they had not heard the submarine at any time and
       that our camouflage, even against the just risen moon, rendered us
       invisible at ranges in excess of 500 yards. They also reported that
       their Walkie Talkie was inoperative when they had attempted to raise
       us. Trouble was later traced to a loose speaker connection which
       was repaired. This fault was not disclosed by two tests prior to the
       mission. It is believed that the CREW operated the boats successfully
       completed without detection, either during the preliminary recon-
       naissance or the landing operation itself. For comments of the
       escorting A.I.B. officers on this operation see enclosure (B).

1 July 1945 (I)

2223 Commenced transit of SUNDA strait.
2302 Completed transit of narrows.

- 5 -

— page 259 —
T-O-P S-E-C-R-E-T

Subject: USS BLUEBACK (SS326), Report of Special Mission, War Patrol
         Number THREE.

— page 260 —
TOP SECRET
T-O-P S-E-C-R-E-T

Subject: USS BLUEBACK (SS326), Report of Special Mission, War Patrol
         Number THREE.

2 July 1945 (I) (Continued)

2058    Surfaced 5 miles off PADAK point (5-39.5S, 104-45E). Maneuvering on
        various courses in center of SEMANKA BAY while charging batteries and
        awaiting the time at which the landing had been planned. Plans were
        to debark the landing party at about 2330, clear the immediate area,
        then return and pick up the two escorting officers at about 0100,
        3 July. Moonrise at 0102. The large, seven man rubber boat with the
        outboard motor was to be used. It was decided not to use the motor,
        however, unless an emergency developed, since the motor noise would
        undoubtedly betray the location of the landing party and arouse sus-
        picion. Recognition signals agreed upon were the same as those used
        at the CREWE landing.

2250    Brought the 7 man rubber boat on deck via the forward torpedo room
        hatch and commenced inflating it. Agents' gear was left below in
        case a quick dive became necessary before heading in to the landing
        point. It was believed wiser, however, to test the boat itself well
        in advance and get the noises of the boat handling and inflation over
        with before closing the shore.

2302    Commenced closing the beach on course 345° T, range 9000 yards.

2315    Battle Stations, Gun. Manned 40mm, .50 cal. and .30 cal. guns. Both
        5" gun crews dark adapted and standing by below decks. Range to shore,
        7000 yards.

2316    Noted bright pinpoint light on land, bearing 350 relative. Bearing,
        when plotted, indicated either a navigational light in the vicinity of
        KATO AGUNG (Lat. 5-30S, Long. 104-37E) or a light at one of the rubber
        plantations north of BALING BESI point. The light went out after
        about 15 seconds indicating that it was probably the latter.

2317    Changed course to 023° T. Phosphorescent glow from wake is intense.

2328    Changed course to 043° T to head directly at the landing spot for
        minimum silhouette.

2334    With the beach 5400 yards distant, secured the engines and shifted to
        the battery. Proceeding ahead slowly taking occasional single ping
        soundings on fathometer. Leadsman standing by on deck with leadline
        ready for use when water gets too shallow for fathometer.

2335    Opened deck hatch forward and commenced bringing agents' gear on deck.

- 7 -

— page 261 —
T-O-P S-E-C-R-E-T

Subject: USS BLUEBACK (SS326), Report of Special Mission, War Patrol
Number THREE.

2 July 1945 (I) (Continued)

2345 With the beach at 1500 yards launched rubber boat by dropping it from
 forward deck level of about six feet. Continuing to close beach very
 slowly while loading the boat.

2354 Stopped 1100 yards from the landing spot in 13 fathoms of water, ready
 to debark the landing party consisting of Lt. K. C. GILLETT, A.I.F.,
 Lt. L. NICHOLSON, R.A.N.V.R., and Agents SULAIMAN and NARUDIN. Sea
 calm with slight swell and considerable phosphorescence; no wind; some
 surf noted breaking on rocks; sky clear with no appreciable surface haze
 around horizon. Prior to this time, Walkie Talkie sets had been
 tested out and found satisfactory. One of the ship's communication
 receivers was guarding Walkie Talkie frequency as additional communi-
 cation safeguard. As an experiment the landing party had been given
 a jury rig radar reflector consisting of a flour tin which could
 be raised to a height of several feet to aid in detecting the rubber
 boat on the return from the landing.

2355 Landing party departed. Backed clear.

3 July 1945 (I)

0012 At 4200 yards from beach came about to 195° T, started the engines and
 headed out at two engine speed continuing the battery charge. Maneu-
 vering on various courses in center of SEMANKA BAY while awaiting time
 of pick up.

0101 Changed course to 020° T and headed back in.

0115 Changed course to 035° T for minimum silhouette and to head directly
 at landing point.

0119 At 3800 yards secured the engines and shifted to the battery.

0121 SJ radar contact 340 relative, distant 3200 yards. Incorrectly
 assumed that this was landing party returning and that our radar
 reflector was proving extremely effective.

0124 At 2500 yards from shore, second SJ radar contact 320 relative, range
 700 yards. Commanding Officer commented to the effect that "One of
 these silly contacts is going to give us some trouble and get his nose
 shot off".

0125 Second contact sighted and recognized as rubber boat containing land-
 ing party. Challenged boat with password to which they returned
 correct reply.

- 8 -

— page 262 —
T-O-P S-E-C-R-E-T
Subject: USS BLUEBACK (SS326), Report of Special Mission, War Patrol
Number THREE.
3 July 1945 (I) (Continued)

0126 With first radar contact at 350 relative, range 1200 yards, made third
SJ radar contact at 340 relative, 1800 yards. Stopped 2400 yards from
shore in 20 fathoms of water.

0128 Landing party along port side forward. Lt. GILLETT and Lt. NICHOLSON
came on board and their equipment was quickly removed from the rubber
boat. The boat, being of heavy synthetic rubber construction and
difficult to handle, was walked aft to the vicinity of the engine
exhausts where it was hauled aboard without extra difficulty and
deflated. The two radar contacts had been made out faintly as sail-
boats similar to the type seen on the photographs. They were well
kept under close observation by the radar tracking party and by the
lookouts while the work of unloading the boat was going on. Closest
approach was 1200 yards.

0130 Boat and all gear on board. Backed clear.

0142 At 4800 yards from beach came about to 130° T and started the engines.
Headed out of the bay at 3 engine speed, continuing battery charge on
one engine. The two escorting officers reported that the landing
operation was successful and undetected. They landed about 100 yards
south of the selected spot because visibility along the wooded shore
was poor and they did not want to waste time searching for the exact
spot. The surf commenced about 100 yards from shore, so they picked
an opening between two rocks and went in. Luckily, the opening gave
access to a very small section of shingle beach and they rode a large
wave well up on the beach. After debarking the agents it was necess-
ary to force the rubber boat back through the surf which they did at
the expense of about six inches of water in the bottom of the boat
and a thorough soaking. Some small articles of their equipment were
lost, including Lt. GILLETT's Webley revolver. Other equipment in-
cluding Walkie Talkie, was soaked in salt water and rendered useless
for the time. They considered themselves lucky to make it without
capsizing, however. They commented that they did not see us until
they had closed to less than 500 yards and that they had not heard the
submarine at any time. They believed the landing operation was com-
pletely undetected. The rubber boat was well clear of the shore be-
fore the sailboats passed that section of the beach and the submarine
would have been invisible to a sailboat at 1200 yards. It is be-
lieved that the DOVER operation was successfully completed without
detection, either during the preliminary reconnaissance or the land-
ing operation itself. For comments of the escorting A.I.B. officers
on this operation see enclosure (C).

- 9 -

— page 263 —
T-O-P S-E-C-R-E-T
Subject: USS BLUEBACK (SS326), Report of Special Mission, War Patrol
         Number THREE.

— page 264 —
MEMO:- Com. CLEMENTSON, U.S.N.
Subject:- Landing Operation "CREWE"

We wish to record the fact that the conduct of the U.S.S. BLUEBACK
prior to, and during the landing, followed a pattern which was most satis-
factory from our point of view and which played a major part in making the
mission a success.

The main object was achieved viz.! - Agents were landed unobserved,
their gear intact, and with every chance of making good on shore

The following are some of the aspects of the submarine's part which
materially helped us:-

(1) The preliminary Recce was very effective in that the agents
were able to form a clear picture of the area; we were able to
select landmarks which helped in finding the landing spot at
night; photographs were obtained both in stereo and panorama
which will be of great value later.

(2) We were sent off from the correct point, within reasonable
distance of shore, and on the return the timing was so good we
were able to locate the sub, without having to resort to light
signals or extend the time of the operation any longer than was
necessary.

(3) Submarine made intelligent use of the good conditions prevail-
ing - remained quiet, and we have every reason to believe
completed the operation without being observed as such by coastal
fishing craft - a point which has an important bearing on the
welfare of agents ashore.

In short, all hands have given us willing co-operation and much
valuable assistance for which we are most grateful.

/S/ L. NICHOLSON, Lt., RANVR.
/S/ K. C. GILLETT, Lt., A.I.F.
Escorting Officers, S.I.A., A.I.B., Aust.

Certified to be a true copy:
[SIGNATURE: M. K. Clementson]
Commander, U. S. Navy.

ENCLOSURE (B)

— page 265 —
MEMORANDUM

To: Commander M. K. CLEMENTSON, U.S. Navy.
Subject: Landing Operation - DOVER.

2 July 1945

This operation, in common with CREWE was carried out in a manner which
left nothing to be desired.

The point chosen for the landing offered more difficulties as far as
boat work was concerned, owing to the rocky nature of the coast line and
the Southorly swell running up the bay; these difficulties were offset to a
great extent by the fact that we were able to complete the periscope recon-
from 1,000 yards which allowed us to choose a likely beach with good land-
marks for the pickup which is to follow, a sketch was made, which combined
with the submarine photographs obtained should give all the additional data
necessary.

Our boats were prepared and launched with the usual quiet efficiency
and we were sent off at 1,100 yards with all gear intact.

On the return the "Lane" patent radar reflector was evidently effective
and brought the sub within sight without delay. We used this when approxi-
mately 2,200 yards off shore and were glad it was not necessary to use lights
to make contact.

The night was partly overcast and the submarine visible to us at about
500 - 600 yards against the horizon. This radar reflector seems to be a
solution to the problem of contacting the submarine on dark nights, is light,
simple and not affected by salt water - we hope to be able to carry something
similar as part of our equipment on future operations.

We were rather fortunate in clearing the shore before two sailboats
appeared, moving along close to the land - we are sure that they did not see
us and since the sub was at least 2,000 yards away, bow on, and against the
dark horizon of Benkuelen it follows that she also was unobserved.

To sum up, we can safely assume that the landing was made at the right
place, was quite secret, and successful in every other respect.

In conclusion, we feel confident that both operations, DOVER and CREWE
will be fruitful; we know that they are the climax to a considerable amount
of time and effort expended by S.I.A. and have ourselves been intimately
concerned with the final preparation of the agents.

May we offer our sincere appreciation of your good judgement in the
various matters which went to make the landings effective and grateful thanks
for the unstinted help we have received from one and all aboard the BLUEBACK.

/S/ L. NICHOLSON, Lt., RANVR.
/S/ K. C. GILLETT, Lt., A.I.F.
Escorting Officers, S.I.A., A.I.B., Aust.

Certified to be a true copy:
[SIGNATURE: M. K. Clementson]
M. K. CLEMENTSON,
Commander, U. S. Navy.

ENCLOSURE (C)

— page 266 —
FE24-71/A16-3 UNITED STATES NAVY 12/mn
Serial 0008-A 8 August 1945
T-O-P S-E-C-R-E-T

FIRST ENDORSEMENT to:
USS BLUEBACK (SS326)
Top Secret Ltr. A16-3
Serial 0003, dated
12 July 1945.

From: The Commander Submarines SEVENTH FLEET.
To: The Commander SEVENTH FLEET.
Subject: U.S.S. BLUEBACK (SS326) - Report of Special
Mission - Third War Patrol.
Enclosure: (A) Subject Report.

1. Enclosure (A) is forwarded herewith.

2. These Special Missions were expeditiously and
uneventfully performed as a result of careful planning and execution.

3. The Force Commander congratulates the BLUEBACK
and the A.I.B. Parties in charge of Lieutenant K. C. GILLETT,
A.I.B. and Lieutenant L. NICHOLSON, R.A.A.N.V.R. upon their successful
completion of two Special Missions.

W. L. WRIGHT,
A. Chief of Staff.

DISTRIBUTION:
CNO (1)
Vico CNO (1) Without Enclosures D and E.
COMSUBPAC (1) " " " " "
AIB PERTH (1) " " " " "
CO USS BLUEBACK (1) 1st End. only.
File (1) Without Enclosures.

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

[STAMP: RECEIVED S-C FILES]
[HANDWRITTEN: 8mm 7056]
[HANDWRITTEN: Date: 20 AUG 1945]
[HANDWRITTEN: File No. (AU) 183159]
[HANDWRITTEN: Log No. 7]
[HANDWRITTEN: By S-2]

— page 267 —
END OF REEL
JOB NO. [HANDWRITTEN: AR-53-81]
[HANDWRITTEN: E-108]

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|||||4.0 |||||1.8

THIS MICROFILM IS
THE PROPERTY OF
THE UNITED STATES
GOVERNMENT

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

MICROFILMED BY
NPPSO-NAVAL DISTRICT WASHINGTON
MICROFILM SECTION