U.S.S. JACK (SS-259) — war patrol report SS-259_JACK.pdf

— page 1 —
7/08
: AR-18378
Jack (SS-3597)
OPERATOR: [Name]
DATE: 10-16 - 28

THIS MICROFILM IS
THE PROPERTY OF
THE UNITED STATES
GOVERNMENT

MICROFILMED BY
NPPSO-NAVAL DISTRICT WASHINGTON
MICROFILM SECTION
REEL TARGET - START AND END
NDW-NPPSC-5210/1 (6-78)

— page 3 —
1942, a
Construction of USS JACK (SS 259) started on February 2, 1942, a
Groton, Connecticut, by Electric Boat Company. The vessel was launched
October 16, 1942. The sponsor was Mrs. Frances Seeley. The JACK was
commissioned January 6, 1943, at the Submarine Base, New London. Lie
tenant Commander T. M. Dykers, U. S. Navy, was first commanding ofiic

Commissioning was followed by a training and shakedown period of
6 weeks duration, operating out of New London, in Long Island Sound.
During this period one trip was made to Newport, Rhode Island, for
structural torpedo firing. Post shakedown repairs required 30 days,
and on April 26, 1943, departed New London for Panama. Off the coast
of Florida a contact was made with a German submarine, but a firing
position could not be reached. Arrived Panama, C. Z., May 2, 1943.
Departed Panama May 7, 1943, for Pearl Harbor, T. H.

The JACK arrived at Pearl Harbor T. H. from Panama, May 21, 1943
and received a refit by USS GRIPPIN. After 3 days training the boat
left for her first war patrol on June 5, 1943, Commander T. M. Dykers
U. S. Navy, commanding. Arriving at Midway on June 9, 1943, the JACK
refueled and departed for patrol same day.

Entered area June 18, 1943, which was south of Honshu in vicinit
of Tokyo. Sighted convoy of 3 merchant ships and one destroyer. No
attack was made, since it proved impossible to close the targets.

June 18th made submerged torpedo attack on 1,500 ton trawler.
Missed due to premature explosion of torpedo.

Only small patrol boats were sighted until June 26 when a 5 ship
convoy was sighted. Five attacks were made submerged, firing 12 tor-
pedoes in all, sinking 3 ships, one naval collier 8,215 tons, one
passenger freighter 9,257 tons, and one freighter damaged 6,000 tons.
The JACK received a very close bomb just as attack #6 was about to be
made. Very heavy damage was sustained. No more attacks made either
by JACK or the enemy.

June 28, made contact on enemy cruiser, his speed was too fast
for JACK to close.

July 4, sighted 2 ships with one escort, made submerged torpedo
attack firing 3 torpedoes for 3 hits; ship sank immediately. Escort
dropped 2 depth charges and left vicinity. Target sunk was a freight
er of 6,783 tons.

July 8, made a submerged torpedo attack on a convoy of 3 merchant
and 2 escort ships. Fired 3 torpedoes at leading ship but no hits.
Believed due to faulty torpedoes. Went deep immediately after firing.
Received heavy depth charge attack for a period of 2 hours, all fair-
ly close. Thirty-nine charges dropped.

— page 4 —
2 - (USS JACK)

July 9, left patrol area, returned to Pearl Harbor, T. H., for refit by Submarine Division 122 and USS GRIPFIN. Patrol occupied a total of 44 days with 22 days spent in area. It was terminated by expenditure of torpedoes and depth charge damage. Submarine Combat Insignia was awarded.

Second war patrol was started, after a 43 day refit plus 4 days training, on September 5, 1943, from Pearl Harbor, T. H.

September 9, arrived Midway, topped fuel, water, and stores, left Midway same day.

September 18, entered area which was south of Honshu, near Bonin Islands.

September 24, the number 2 main engine crank shaft carried away while charging batteries.

September 26, made submerged attack on Kamikaze class destroyer firing 4 torpedoes at long range. All missed. Torpedoes were detected as they crossed track of enemy after which she turned towards JACK, and commenced depth charging, none close, lasting about 5 hours.

September 29, departed patrol area, because of engine trouble.

October 6, arrived Pearl Harbor, T. H., patrol having lasted 36 days with 6 days on station and 6 days on special mission. Submarine Combat Insignia was not awarded for this patrol.

After 5 days of voyage repairs, on October 11, 1943, departed Pearl Harbor, T. H., for Mare Island, California. Arrived Mare Island October 18, 1943, for Navy Yard overhaul, during which the H.O.R. main engines were replaced by General Motors.

December 26, 1943, departed Mare Island, California, for Pearl Harbor, T. H., arriving January 2, 1944. After voyage repairs by USS SPERRY and a 6 day training period, departed January 16, 1944, for third war patrol, Commander T. M. Dykers, USN, commanding.

Arrived Midway, January 21, 1944, topped off, commenced voyage repairs, which required 7 days.

Departed Midway January 28, 1944, for patrol area. February 5, while passing Marcus Island, received 3 bombs from aircraft, none close. February 11, entered patrol area in South China Sea, west of Luzon.

Numerous small craft were sighted, none worthy of torpedo fire, with sea too rough for gun action, but on February 19 a convoy of 5 large tankers with 3 escorts was sighted. During the next 20 hours made 3 night surface attacks and one day submerged torpedo attack on this convoy. Net results -- 11 hits out of 17 torpedoes fired, 4 large gasoline loaded tankers, and one medium tanker sunk.

On February 29 a heavy cruiser of the Nachi class was sighted but could not be closed.

— page 5 —
3 - (USS JACK)

On March 1 two night surface torpedo attacks on a convoy of 4 large ships and 2 escorts resulted in 2 large AK's cargo vessels sunk. Having expended all torpedoes on board headed for Fremantle, Western Australia. Less than 12 hours after firing the last torpedo, sighted a 2 ship convoy with 2 escorts and was forced to evade.

Arrived Fremantle, Western Australia, on March 13, after a patrol of 56 days duration; 19 days in assigned area in which 7 ships were sunk for a total of 53,486 tons. Submarine Combat Insignia was awarded for this patrol. This is the most successful patrol of the JACK.

A 14 day refit was accomplished by the Submarine Repair Unit at Fremantle, Western Australia, and on April 6, 1944, after a 4 day training period, departed Fremantle on fourth war patrol, Commander T. M. Dykers, JSN, commanding, to avenge in South China Sea northwest of Luzon.

On April 14th made an unsuccessful night surface attack on 2 medium AK's with 4 escorts. Fixed 4 torpedoes with negative results; attack was undetected. Forced to retire at daybreak.

Contacted a small fishing vessel on April 21st but did not attack.

On the night of April 25th made radar contact on a convoy consisting of 7 ships and 8 escorts. Attacked on the surface firing 6 torpedoes of which 4 hit. Opened range and reloaded while escorts dropped numerous depth charges at random. Attacked again firing 10 torpedoes with 6 hits. Of original 7 large ships only 3 could be seen now. One turned toward. Fired 3 torpedoes of which 2 hit. Broke off attack at dawn.

Destroyed a small Jap trawler by gun fire on April 27th. Took 2 prisoners.

April 28th sank another trawler-type vessel by gun-fire.

Reached Fremantle May 10th. Patrol was 37 days duration, of which 4 days were spent in area. Patrol was terminated by expenditure of torpedoes. The Submarine Combat Insignia was awarded.

Received a normal refit by Submarine Division 122 and USS GRIFFI Lieutenant Commander Arthur E. Krapf, U. S. Navy, relieved Commander T. M. Dykers, U. S. Navy.

After a 5 day training period, under way from Fremantle on June 4, 1944, for fifth war patrol, Lieutenant Commander Arthur E. Krapf, USN, commanding. Patrol area was South China Sea off west coast of Luzon.

June 25th made a night surface attack on a convoy of at least 12 ships. A large tanker and a medium freighter were hit. Broke off attack with coming daylight.

Was under gunfire attack on the night of June 27th by 2 patrol craft but successfully evaded without damage.

— page 6 —
4 - (USS JACK)

Contacted a convoy of about 9 ships with escorts on June 29th. Made a night surface attack. Fired 10 torpedoes, heard 5 explosions. Reloaded and reattacked firing 4 more torpedoes. Three hit.

Departed area. All torpedoes expended. Patrol occupied a period of 40 days of which 27 were spent on station. Arrived Fremantle, Western Australia, on July 14th. The Submarine Combat Insignia was awarded.

Received a normal refit by Submarine Division 122 and USS GRIPPI. After a 3 day training period departed from Fremantle, Western Australia, on August 6, 1944, and conducted sixth war patrol in Celebes Sea, Lieutenant Commander Arthur E. Krapf, U. S. Navy, commanding.

August 25th sighted and sank a coastal freighter by gun fire.

Made a night surface attack August 29 on a large AK with 2 escorts. Fired 13 torpedoes during the attack sinking the AK and large escort.

Departed patrol area September 16, 1944, and arrived at Fremantle Western Australia, on September 24, 1944. The Submarine Combat Insignia was awarded.

Patrol was of 49 days duration of which 28 days were spent in area. Length of patrol terminated by operational orders. September 24, 1944, arrived Fremantle.

October 9, 1944, Lieutenant Commander Albert S. Fuhrman, U. S. Navy, relieved Commander Arthur E. Krapf, U. S. Navy, as commanding officer.

The refit lasted 3 weeks. October 18, 1944 to October 27, 1944, was devoted to training.

October 27, 1944, underway for seventh war patrol, southwest of Dangerous Ground in South China Sea. Lieutenant Commander A. S. Fuhrman, U. S. Navy, commanding.

November 14, 1944, made contact on convoy and fired 4 torpedoes in night surface attack. Observed one hit which caused a tremendous explosion. This ship, a medium AK of 4,000 tons, sank.

November 15, 1944, commenced second attack on another ship of same convoy. Fired 4 torpedoes from stern tubes. Observed 2 hits amidships. The ship, a medium AK of 4,000 tons, was credited as damaged.

December 4, 1944, departed area. Patrol was terminated by operational order. December 14, 1944, arrived Guam, M. I.

December 15, 1944, departed Guam, M. I., for Pearl Harbor, T. H. December 24, 1944, arrived Pearl Harbor, T. H.

Seventh war patrol was 60 days duration of which 34 days were spent in area. One medium AK of 4,000 tons was sunk and one medium AK of 4,000 tons damaged. Submarine Combat Insignia was awarded.

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5 - (USS JACK)
December 29, 1944, departed Pearl Harbor, T. H., for Hunter's Point, California.

January 6, 1945, arrived San Francisco, California, for overhaul by Submarine Repair Basin, Bethlehem Steel Company. Overhaul period lasted 3 months.

April 1, 1945, departed San Francisco for Pearl Harbor, T. H.
April 9, 1945, arrived Pearl Harbor, T. H., for voyage repairs and training. April 26, 1945, departed Pearl Harbor, T. H., for Saipan, M. I. May 8, 1945, arrived Saipan, M. I. May 9, 1945, departed Saipan, M. I., for eight war patrol, Lieutenant Commander A. S. Fuhrman U. S. Navy, commanding. Was conducted in Nampo Shoto and Bungo Sudo area. Major portion of patrol was devoted to lifeguard duties.

June 8, 1945, rescued one carrier fighter pilot.

June 13, 1945, departed station. Patrol was terminated by operational order. June 18, 1945, arrived Guam, M. I., for refit. Patrol was of 52 days duration of which 30 days were spent in area. Submarine Combat Insignia was awarded. Received a normal refit from Submarine Division 201 and U33 FRTEDUS. After a 4 day training period left Guam, M. I., on July 12, 1945, Lieutenant Commander A. S. Fuhrman U. S. Navy, commanding.

The ninth war patrol was a lifeguard mission, south of Sakishimo Gunto conducted for Army transports flying from Luzon to Okinawa. August 17th departed station for Saipan, M. I.

August 22nd arrived Saipan, M. I. Departed Saipan August 23rd en route to midway. Arrived Midway August 29th. Patrol terminated t order. Received a 5 day refit from Submarine Division 122 and USS GRIPFIN. Departed Midway September 5th en route to Pearl Harbor, T. H.; September 9, 1945, arrived Pearl Harbor, T. H.; September 10, 1945, departed Pearl Harbor, T. H., for Panama, C.Z.

| NUMBER OF PATROL | NUMBER AND TYPE SHIP SINK | TOTAL TONNAGE OF SHIPS SINK | TOTAL TONS OF SHIPS DAMAGED | TOTAL NUMBER OF AVIATION RESCUED |
||||||
| 1st              | 1 Naval Collier          | 8,215                            | 1 AK                            | 6,000                          |
|                  | 1 AK                      | 9,257                            |                                |                               |
|                  | 1 AK                      | 6,783                            |                                |                               |
| 2                | none                     | 0                              | 0                               | 0                               |
| 3                | 4 AO                      | 36,000                           | 0                               | 0                               |
|                  | 1 XAO                     | 2,486                            |                                |                               |
|                  | 2 AK                      | 15,000                           |                                |                               |
| 3                | 2 Trawlers               | 82                              | 5 AK                            | 20,000                         |
| 5                | 1 AO                      | 10,000                           | 3 AK                            | 12,000                         |
|                  | 3 AK's                   | 15,000                           |                                |                               |

— page 8 —
6 - (USS JACK)
NUMBER OF PATROL
NUMBER AND TYPE SHIP SUNK
TOTAL TONNAGE OF SHIPS SUNK
NUMBER AND TYPE SHIPS DAMAGED
TOTAL TONS OF SHIPS DAMAGED
TOTAL NUMBER OF AVIATOR RESCUED

6 1 AK 7,500 0 0 0
1 CM 500
1 MIS 200
7 1 AK 4,000 1 Unknown 4,000 0
8 0 0 0 0 1
9 0 0 0 0 0

TOTAL 9 20 115,023 10 42,000 1

* * * *

By Directive dated January 1947, the USS JACK (SS 259) was to be placed out of commission, in reserve, attached to the U. S. Atlantic Reserve Fleet.

The USS JACK (SS 259) earned eleven (11) battle stars on the Asiatic-Pacific Area Service Ribbon for participating in the following operations:

1. Star/Okinawa Gunto Operation
   Assault and Occupation of Okinawa Gunto -- 24 March - 30 June 1945.

1. Star/Submarine War Patrol, Pacific -- 5 June - 15 July 1943.

1. Star/Submarine War Patrol, Pacific -- 16 January - 13 March 1944.

1. Star/Submarine War Patrol, Pacific -- 6 April - 10 May 1944.

1. Star/Submarine War Patrol, Pacific -- 4 June - 14 July 1944.

1. Star/Submarine War Patrol, Pacific -- 6 August - 24 September 1944.

1. Star/Submarine War Patrol, Pacific -- 27 October - 24 December 1944.

1. Star/Leyte Operation
   Battle of Surigao Strait -- 24-26 October 1944.

1. Star/Iwo Jima Operation
   Assault and Occupation of Iwo Jima -- 15 February - 16 March 1945.

1. Star/Okinawa Gunto Operation
   Assault and Occupation of Okinawa Gunto -- 24 March - 30 June 1945.

— page 9 —
7 - (USS JACK)
1 Star/Submarine War Patrol, Pacific -- 16 July - 9 September 1945.

STATISTICS

OVERALL LENGTH 312 feet
BEAM 27 feet
SPEED 20 knots
DISPLEMENT 1,525 tons

Restencllled: January 1951

— page 10 —
53559
SS259/A16-3
Serial 030-43
U.S.S. JACK (SS259)
Cape of Fleet Post Office,
San Francisco, California,
15 July 1943

DECLASSIFIED:
From: The Commanding Officer,
To: The Commander-in-Chief, United States Fleet.
Via: (1) The Commander Submarine Division 122.
(2) The Commander Submarine Squadron Twelve.
(3) The Commander Submarine Force, Pacific Fleet.
(4) The Commander-in-Chief, U.S. Pacific Fleet.

Subject: U.S.S. JACK (SS259) - Report of First War Patrol.

Enclosure: (A) Subject report.
(B) Track chart for the Commander Submarine Force, Pacific Fleet.

1. Enclosure (A), covering the First War Patrol of this vessel in area south of Honshu in the vicinity of Tokyo during the period 5 June to 15 July 1943 is forwarded herewith.

Thomas H. Dykers.

— page 11 —
5. The excellent performance of JACK on her first patrol reflects the great zeal and industry of the Commanding Officer during the fitting out and training of this new thorn in the side of the JAPANESE. The Division Commander congratulates the Commanding Officer, Officers and Crew for their splendid ship, their fighting spirit and the results achieved:

SUNK
1. AC - Similar to HIJMS MUROTO
1. AP - ANYO MARU Class
1. AK - KYOKKO MARU Class

Tonnage
8,215 (displacement)
9,257
6,783
24,255 tons

DALAGED
1 AK - (Class unknown)

6,000 tons

F.3. WARDER.

— page 12 —
1. HARDWARE
May 21, 1943 arrived Pearl Harbor from Panama and commenced
rofit. All rings removed on two engines; main engine exhaust valves
modified by GRIFFIN to prevent formation of salt crust on valve seats; dry-
docked to remove noise from starboard shaft; 50 caliber machine gun received
and stowage provided and installed by GRIFFIN. Conducted three day training
period. Not departed or wiped.

1. HARDWARE
June 5 Departed Pearl for Midway escorted by F.C. 598 until dark.

June 6 Exchanged recognition signals with patrol plane.

June 9 Made rendezvous with plane escort on Midway thirty mile circle
0500 (?) and at 0745 moored alongside STOCK at Midway. Stopped off
with fuel, lub oil u water and at 1500 depart. In company with STOCK to
in company with STOCK to third mile circle where each ship
set course for his area.

June 18 Entered area having made enter passage on the surface except
0140 (K) for daily drills. No plane or ship sighted current.
0530 Made landfall on Miyako Shima and submerged in reported traf-
fic lane to Truk. Carrying in the evening ran North to
got closer to the boat between O Shima and Hojima Sake.

June 19 Submerged approximately twenty miles southeast of O Shima
wearing to the northwest all day. The strong northeast cur-
rent running practically nullified these efforts.
1930 (K) Sighted a convoy (Contact #1) of three merchantmen with des-
troyer escort hull down in the direction of O Shima. Angles
on the bow very large. This looked like the perfect oppor-
tunity since it would be only about an hour before we could
surface and chase. The T.D.C. was set-up with the convoy on
a base course.

2030 Surfaced and chased on four engines. After covering convoy
spools up to sixteen knots with no contact it became evident
that he had given us the slip probably by cutting westward
between Miyako Shima and Ni Shima. Will give that pass more
consideration in the future. In investigating a radar contact
three niles off Miyako Shima was challenged by searchlight
so our presence in this locality is probably known.

- 1 -

ENCLOSURE (A)

— page 13 —
1955
: 2200
: June 21
: June 22
: 1600 (K)

---

**Subject:**

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

---

**June 20**
C807 (K)

---

**0624**

---

**Sighted a 1500 ton tender (Contact #2) coming out of rain squall. When the range decreased to 2000 yards he stopped to listen. Closed him and at first target at an estimated range of 1000 yards. The first one aimed at the M.O.T. exploded there after a thirty four second torpedo run but when the column of water did down he was still there and all in one piece. It must have penetrated very close aboard him. The JACK went to 250 foot expecting to be depth charged but was not. His screws were not heard again and he was not to be seen on return to periscope depth 45 minutes later unless a speck on the horizon in the direction of Miyake Shima could have been the target. Sinking or damage is not claimed. The wing torpedoes missed. Let. 34-03,51 Long. 139-49E. The JACK then moved fifteen miles to the eastward and turned south against the current. It turned out later that we should have put more distance between us and the attack area. The run south at 24 knots netted us nothing against the current. There were no counter or search activities at all until when plunging was picked up at 20 knots and on both quarters. In the growing dusk finally picked up what appeared to be a small patrol vessel (Contact #3) dead astern about 3000 yards but could not see the ships on the quarters. Went to 260 feet and rigged for silent running. After an anxious hour and a half during which we were boxed in and thoroughly investigated at

---

**June 21**

**Patrolled inside the 100 fathom curve off Katsura Wan 11.6th navigating on sounding alone unable to see the beach in the rain and overcast. A trawler passed to seaward - abandoned approach when it was realized the large mass forward was not a built up bridge but an auxiliary sail and that he was very small. No other shipping sighted. Will now to Hojima Salt tomorrow.

---

**June 22**

**Patrolling four to six miles off Jojima Saki. This is evident - by not close enough because at a vessel resembling MAN MARU (Contact #5) rounded the light and estimated half mile from the beach and out of range. About fifteen minutes before sighting the merchantman on SC Flotplane similar to Pote passed over possibly an escort as no surface escort was noted. After observing the currents here today will feel better about running a real close patrol tomorrow.

---

**2 -**

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**ENCLOSURE (A)**

— page 15 —
0525-13 (Cont'd)
0546
0547-15

This fifth ship in column second to be running around in circles and all hands were "dropping small depth charges. They didn't seem to have any idea where the torpedoes had gone from. It looked like such a process we turned away and commenced a relief at pariscope depth. When we had three forward and two aft ready turned back to polish off the second ship fired at which seemed in the best shape. It
Fired on torpedo at the MCT range 1400 yards - it missed so at
sank in about four minutes after. One boat of survivors got away and passed to within twenty yards of the pariscope. Sexe hid behind the gunwale when they saw it. There was a sprinkling of soldiers amongst these men. I then left
this pariscope up to let some of the officers and men look at the sinking ship and this prevented my getting No. 5 in column and almost cost us our lives. It seems that this last ship was an auxiliary and had been looking for us all the time. Just after we passed the lifeboat swung the pariscope around and saw No. 5 bolding smoke from his stock and swinging
toward - range 1500 yards. No had two torpedoes ready forward so we swung towards his to shoot down his threat. The stock up had just been cranked into the T.D.C. and I opened my mouth to say fire when all hell broke loose. Evidently there had been a planed escort that we hadn't heard from. The charge landed very close aboard on our port quarter (it must have landed practically on the lifeboat) and blew our stern out of the water. Bow and stern planes went out - she nosed over about 25° (poppet ators in the torpedo room bridge didn't help much at this point). By blowing bow buoyancy and bolding full we caught her at 380 feet. Storm planes were gotten in hand immediately and bow planes in a few minutes after the removal of an obstructing chain guard in the forward torpedo room. There was considerable damage particularly to the torpedoes upon at this time but fortunately no hot runs in the tubbs. I don't know what became of the auxiliary with this
small angle on the bow - the depth charge or the life boat
made him change course. Whatever it was definitely saved our
being rammed when we broached.
Of the five ships in the convoy two were observed to sink and one was settling aft with one hit in her stern when last seen. Once again reaching periscope depth not only the ship's effect at the scene which was about five thousand yards away. One of them was the escort (a very new and trim looking vessel similar in appearance to TARUSHA, NURU, page 101 ON 2087) the other probably the formation leader which had made a ride turn around to the left. We retired from the action to investigate and repair our damage.
Torpedoes remaining - five forward - four aft. If I hadn't been so eager to gloat I could have gotten the auxiliary and saved this vessel the damage which may yet require early termination of this patrol.

- 4 -

— page 16 —
1. U.S.S. JACK - Report of First Var Patrol.
2. June 27
3. Patrolling TRUK-TOKYO route in southeastern part of area. Shifted #1 periscope to conning tower since #2 had been practically unusable since the depth charging. Made other repairs including blowing down and isolating half of #2 air bank.
4. June 28 0310(K)
5. Radar contact (Contact #8) at 5200 yards dead ahead. Visual contact was made shortly thereafter. Turned stern to target and commenced tracking. The range closed very quickly to 3,200 yards. He suddenly zigged at least 90 degrees away and left us very large tracks and extreme torpedo runs almost immediately. To turned and chased him toward Tokyo but his 20 knots was as much as we could do and the range stayed constant at about 6200 yards until we abandoned the chase due to fast approaching daylight and confined waters near the entrance to Sagami Nada. He appeared to be a light cruiser of the TEIKU class and was unscorched. Radar is definitely not putting out as it should. Boing cast loose from its mooring as by the close depth charge evidently has jarred it out of adjustment.
6. June 29
7. Patrolled Truk-Tokyo route and after surfacing proceeded to the vicinity of Inamba Shima and lay to trying to repair and adjust S.J. radar for use on these black nights - no luck.
8. June 30
9. Patrolled channel between Inamba Shima and Zoni Zu and lay to off Inamba Shima after surfacing working on Radar - it won't function at all now and is considered permanently cut for the patrol so proceeded to the southmost corner of the area where there was some possibility of contacting targets during daylight.
10. July 1-3
11. Patrolling western approaches to Sagami Nada.
12. July 4
13. Took station at the north of Suraga Tan on a line between Onai Saki and Iro Saki. Dodged three patrol boats during the day and at 1520(K)
14. Saw a ship hull down and smoking (Contact #9) coming around Iro Saki. After two observations which indicated this bearing was drawing toward the north a rain squall set in which reduced the visibility to about 3000 yards and he was lost from view. Turned north and had almost concluded that the ship had entered the bay instead of coming across it when the soundman, Erigbaum, D. H. RIZE picked up heavy screws bearing 56 degrees relative another set at 63 degrees relative and a light fast screw at 72 degrees relative. The rain lifted a little and a large more than 3600 yards. He obliquely zigged toward at a range of 3200 yards and away again at 1800 yards. It this time, a second ship was sighted about 1500 yards astern of the first. The JACK was between the escort (a converted workboat of about 200 tons) and the target. It
15. 1513(K)
16. Celebrated Independence Day by firing three torpedoes from a

— page 18 —
1215(K)
[Cont'd]
given a few seconds before firing checked on with the T.D.C.
Sound heard all torpedoes run hot, Torpedoes remaining - one
aft, two forward.
Immediately after firing ordered deep submergence and headed
for deeper water. Togo then recovered the fusible and commenced
a depth charging which lasted for two hours during which 39
charges were planted firmly close aboard but the damage to
anything but nerves was slight. They seemed to be set shallow.
They used no echo ranging but they hung on to our most silent
running until we disconnected the counter gear from the starboard
board reduction gear. The last charge dropped was close enough
to indicate that they still had contact and I can't understand
why they broke off their attacks unless they had been
tracing us by the counter gear rattle and thought they had
finished us when it stopped. The only thing left - using were
the main motors and the ship was steered by the control type navigation
netic compass. Due to salt water leak at the safety vent
which trickled into the after battery a 200 volt ground developed.
This ground evidently seriously affected the magnetic
compass because when we surfaced we thought we were heading
0900 and were actually heading 1600. With a little rotation
luck this could have had serious consequences - but it evidently
dont give us the right course to shake them off.
Fulld clear of the coast to investigate for damage.

July 9
Our one remaining periscope has badly fogged in yesterdays
shellacing to the extent of showing globules of water on the
lens; we have an undetermined number of air leaks to sea; a port
shaft that holds at any speed above 65 rpm; no S.J. radar and
only one reliable and two doubtful torpedoes remaining.
In this condition the ship is not sufficiently effective a
fighting unit to warrant further time on station so decided
to terminate the patrol. Sent JACK serial #1 to Consubmarine
so informing him.

July 15
arrived Midway.

2.
WEATHER
The weather proceeding to station was excellent but simultaneous
ly with arrival in the area it commenced to rain and be overcast with low
visibility. Even when within five miles of the beach it was impossible to
distinguish navigational landmarks. This coupled with the strong and unpredictable currents encountered make this area a tough one from a navigational
point of view. The seas were generally choppy and excellent for periscope work.

My advice to ships operating in this area at this time of the
year is to hang on to landmarks by radar or sight. The sky is completely
overcast with low hanging clouds 90% of the time and echo-navigation consequently seriously curtailed.

-7- ENCLOSURE (L).

— page 19 —
3. TIDAL INFORMATION

4. Very strong easterly set running as strong as two and one half knots was experienced west of longitude 155 E in proceeding to the area. It is noted that the NAUTILUS encountered the same set about this time last year. The currents in the area are generally as described if that means a great deal. They are definitely strong and tricky and not to be trusted. Care must be exercised not to get caught in a three knot on shore current in shallow water with the impossible visibility obtaining here at this time of the year. This is particularly true in the vicinity of Katsurav Island which would otherwise be the best location to intercept the coast traffic. During one period of three days in the lower western approaches to Segami Nada we were practically lost for two days when we encountered a set of 310° and drift of 64 knots when the Kuroshio should have been setting us northeast at about two knots.

When operating three miles off the beach southmost of Nojima Sakaguchi experienced a sudden heavy set on to the beach when inside the 100 fathom curve. We were into one mile from the beach before we could get the ship out of irons and turning around.

4. NAVIGATIONAL LIGHT INFORMATION

Shiroyaki
Katsurua Vian
Nojima Sakaguchi
Iro Sakaguchi

The S.D. radar was used frequently to obtain fixes when operating in the vicinity of two high landmarks such as Miyake Shima and Mikura Shima. Ranges up to 32 miles were obtained on each of these islands. When only one radar range was obtainable a sounding usually gave a fair position.

4. A shoal with a least depth of 85 fathoms was crossed bearing 337° distance 27 miles from Kure Island. The bottom is uncharted in this locality. It is recommended that this shoal be sounded thoroughly and swept for mines and information on its existence be disseminated to the service.

SHIPS SIGHTED

| No. | Date/Time | Position | Type | Course | Speed | Remarks |
|-----|||-------||||
| 1   | June 19    | 34-41 N   | 3     | -      | -      | Data unreliable |
|     | 1930(K)    | 139-41 E  | 1 Escort | 340   | 3      | Lost after dark. |
| 2   | June 20    | 34-05 N   | 1500 ton | 340   | 3      | Attack #1 |
|     | 0807(K)    | 139-46 E  | Trawler |        |        |         |
| 3   | June 20    | 34-08 N   | 3     | Varies | Various | Looking for JACK |
|     | 1955(K)    | 140-03 E  | Vessels | 230   | 6      | Auxiliary with |
| 4   | June 21    | 35-06 N   | 75 ton |        |        | sail forward |
|     | 1000(K)    | 139-36 E  | coastal |        |        | Unable to close |
| 5   | June 22    | 34-53 N   | MILAN |        |        |         |
|     | 1600(K)    | 139-52 E  | M.RU  |        |        | ENCLOSURE (A) |

— page 20 —
5. SHIPS SIGNED (Cont'd)

| No. | Date/Tine | Position | Type | Course | Speed | Remarks |
|-----|||------|-------|-------||
| 6.  | June 23   | 34-57-30 N | Patrol | Various | Various | Many sighted at sunset. |
| 7.  | June 26   | 140-00-00 E | Trawlers | 190' (base) | 9 | 1 MUROTO (8215 T displacement) 1 ANTO MARU (9257 T Gross) and 1 unidentified about 6000 ton sunk. One unidentified medium size Iru and escort similar to TARUSIMA MARU. Got it or purposely evaded contact. |
| 8.  | June 28   | 33-57 N (CL) | TENRYU Class | 350 (Base) | 20 | |
| 9.  | July 4    | 34-32 N | 2 ship convoy | 260 | 9 | Sunk KYOKKO MARU class vessel (6783 ton gross) Other vessel unident.identified. Escort was a converted work boat of about 200 ton. I AYARI MARU, 2 unidentified, one UJI (FG) escort missed. |

REMARKS (Cont'd)

Other vessels operating in this area have reverted a large number of patrol and fishing vessels. We saw relatively few and practically none more than 10 miles from land. We were surprised at the lack of general patrol activity.

5. AIRCRAFT SIGNED

| No. | Date/Tine | Position | Type | Course | Altitude | Remarks |
|-----|||------|-------|||
| 1.  | June 22   | 34-52 N | Pete | N.W. | 1000 ft | Probably escort for contact # 5. |
| 2.  | June 23   | 139-52 E | | NWE | 1500 ft | Flying from seaward toward Tokyo. |
| 3.  | July 5    | 33-35 N | Betty | W | 2000 ft. | |

- 9 -

ENCLOSURE (A)

— page 22 —
7. REMARKS: (CONT'D)

Attack #1
The target was sighted at a range of 5700 yards and tracked on various courses at twelve knots until he stopped to listen at a range of 2000 yards. The submarine closed and fired on a 60° port track at a range of 1000 yards. The target speed was estimated at three knots. Just as we fired he speeded up and turned toward. A spread of three degrees right and three degrees left was employed. The first torpedo which was fired at the N.O.T. exploded after a thirty-four second torpedo run right on the middle of the target. The two torpedoes missed. A large column of water rose up and hit it subsided the trawler appeared unhurt and turning toward. The Jack went to 250 feet. The screws which were heard making 160 rpm early in the approach were not heard again after firing. The sound was described as sounds he heard only as "a commotion". It is possible that this target was hit and sank but for a small vessel to sustain a torpedo hit and still appear as unhurt as he did sounds extremely improbable. Sinking or damage is not claimed because the torpedo run checks about 100 yards short and the explosion looked just that short.

Attack #2
The preliminary approach was made as described in the narrative. On reaching a range of about 3000 yards - 2000 to the track the convoy zigged toward placing us about 700 yards to the track on the ship chosen for the first attack (2nd in column) and dead ahead of the third in column. JACK commenced to turn toward to fire on a sharp track but the next observation showed that they had all zigged back to port for position to receive the torpedoes. The unhulled devils stayed on the log that would have embarrassed us only about three minutes. Firing was opened on this target (HURCO) on about an 82° starboard track with a torpedo run of 1150 yards. Firing was done by holding each firing bearing on the T.D.C. and aiming the first at the N.O.T. the second just ahead of the bow and the third just abaft the stern. Torpedoes #1 and #2 hit after the proper run. Range was estimated using a notched depth of 100 feet. Ping ranges could have been well employed here but were not used. I did not follow these torpedoes (too dark anyway) and did not see them hit because I was making a set-up on the third ship in column. When later seen this ship was first down at the bow and then subsonically amidships.

Attack #3
This attack was made on the third ship in column (AUTO MARU) the first torpedo being fired 1m-29 sec after the last of the previous attack. Three torpedoes were fired, the first at the N.O.T. on a half bearing on the T.D.C. and the firing torpedoes spread 3° each side by gyro.

- 11 -

— page 23 —
U.S.S. JACK - Report of First War Patrol.

REMARKS: (CONT'D)

Attack #3 - (cont'd)

The first and second torpedo hit indicating a torpedo run of about 1150 yards. The third torpedo angled ahead about missed ahead. This ship was hit both forward and aft of the H.O.T. and commenced to settle aft.

Attack #4

The JACK continued to swing left to bring stern tubes to bear and threw minutes and fifteen seconds after commencing firing on the third ship opened fire on the fourth ship in column which at the time was swinging hard away. Fired a salvo of three torpedoes from tubes 17, 8 and 9 on about 160 starboard track torpedo run 1500 yards - no hits. Fired #10 tube on at 160 track 1100 torpedo run about 1600 - it hit. The ship settled aft with a list to starboard. This ship cannot be identified except to say that it was of medium size single stack, two masts, no gantlops.

Attack #5

After making a reload closed AUTO HATU which seemed to be trying to turn over her engines and at torpedo run of 1400 yards fired one torpedo at the M.O.T. torpedo speed 15 knots. It missed at 1400 and minutes later fired another torpedo just forward of the bow - it hit the stern and the ship sank stern first in about five minutes. In attacks of #2,3,4, and 5 all torpedoes were set at 15 foot because light conditions prevented good estimation of target drift.

Attack #6

This target (Kyodo 1) was in company with another vessel which was about 1500 yards astern and on escort about the same distance on his port beam. He was sighted first by the O.O.D. hull down and lost shortly afterward in a heavy rain squall. Two bearings taken by the torpedo from the bow were about 50 yards from the stern. Thirty feet loosing him down to the northward so the Jock turned North. Thirty seven minutes later he was picked up in the periscope at an approximate range of 3600 yards, angle on the bow 70° port. The target was to only vessel that could be seen but sound reported the other which later turned out to be the second vessel in the convoy and the escort. Three minutes later he made a 20° zig and he held this course until no fired. The first torpedo was fired at the H.O.T. on a held bearing track angle 760° port, range 1170 yards, torpedo run 1060 yards. The other two were spread 30° right and left of the M.O.T. by gyro off set with a firing internal of 11 and 9 seconds; torpedo runs 1030 and 900 yards. The torpedo fired at the H.O.T. had a

- 12-

ENCLOSURE (A)

— page 24 —
1. U.S.S. JACK - Report of First Far Patrol.

REMARKS: (CONT'D)

Attack #7
The target crew was notified by its smoke bearing 350PT and the Jack waited for them to round the light b.f. for seriously compromised approach. The escort, a PG of the UJI class was about 200 yards to the rear and abreast of the landing vessel (AIAAT YAU Class). The approach was radio on the loader since she was the intruder and the first of the three. He had two torpedoes forward and four aft so tried to get in a storm tube shot. The crew was zig-zagging radically with logs of three and four minutes. The target was torpedoes from the storm near the 10,000, and

— page 25 —
U.S.S. JACK - Report of First Patrol.

ENCLOSURE (A)

pumping. We received right and left to give them all some wake interference and after being unable to shake them off for forty-five minutes turned and ran northeast with the current. They lost us on this turn and never regained contact. This search occurring after the ship had been submerged fifteen and a half hours was well timed and executed on the part of the Japs. They used every method in the book and we were fortunate to get out without being depth charged. An almost constant temperature gradient off our degrees between periscope depth and 250 feet prevailed.

During the attack on the convoy on June 26th there was no AS activity until the second ship was hit at which time all of the ships started dumping over light depth charges. Those were seen, did not shake the ship and were not embarrassing. The apparent surface escort was a new looking auxiliary similar in appearance to TARUSHA MARU. He was stationed last in column. His first encounter was to the stern in circles well astern of the column and drop depth charges at random. After our attack that finished off the second ship attacked at random. (AUTO MARU) he saw our periscope and headed for us to make an attack. He was too large to be effective as an AS vessel because we had a perfect set-up on him as he came in and would almost certainly have gotten him had an airplane heretofore unannounced net laid a blockbuster close on our port quarter. Evidently the visibility up to this point had prevented the plane seeing anything on the dark surface of the water or he had just joined the formation. This charge was almost on and layed there in spite of the very close proximity of a crowded lifeboat. It had plenty of authority and definitely put us out of the fight. The attacking auxiliary must have turned away when this explosion went up in front of him. Had he kept on coming he very possibly could have rammed us when we were breached by the explosion. In scrambling for the bottom our stern must have come out of the water and they undoubtedly thought they had sunk us because only one more charge was dropped and that about five minutes later at considerable range.

After the sinking of the Yeklko Maru class vessel on July 4th the escort (a dumpy converted work-boat) (of about 200 tons) dropped two depth charges at random. She never knew where we were and probably received herself with the survivors. Flying conditions were bad and it is believed that there was no plane escort. No counter measures developed later.

On July 8th an hour or so before the convoy was sighted a sub-chaser type patrol boat stood up and lay to between us and the light-house. He had signal flags flying. As the convoy approached he stood toward then to the northward and gave us the opportunity to get in position.

— page 28 —
14. The master speed and distance indicator (pairs on the
    Pitometer Log were jarred out of mesh.
15. Numerous small defects such as broken lights in vari-
    cus systems, and overloaded relays tripping.

As a whole the ship is in excellent shape and none of the
defects should require an extended refit, unless inspection reveals main
engine gear trouble.

11. RADIO RECEPTION

Radio reception was complete and satisfactory. Found the
8000 KGS series of IPMIs high frequency transmissions best for use in the
area. 16,68 KGS were unreadable. Some on any interference was encountered
on the eight band but is was inconsequential. On July 0th at 1140
Zebra a great deal of circuits on my interforance were up on 470 KGS al-
most immediately after we started to transmit. The interforance ceased
when our transmission was completed. Our position was Lat. 36N Long. 144E.

Results of tests in accordance with Gensuppe 00073C of
July:
    Commenced tests on July 10th in Lat 369N Long. 145E en-
route Midway. Of the three frequencies examined for test 9000 was the
only one usable. Interference 0, readability an' signal strength 4 to 5.

Results on: 113 KGS Signal Strength 0-1.
Results on: 12540 KGS Interference 5, Readability 1-2.

12. SOUND CONDITIONS

Sound conditions in the area were generally poor and bet-
ter to the west of the IZU SHOTO than to the east. The enemy picked up a
at the north of SARUGA WAH was first heard at a range of about 4600 yards
and a patrol boat at about 5000 yards. On the other hand the scores of a
good sized merchantman were not heard at a range of 2000 yards in the
easter part of the area a few days later.

The performance of the Baththermograph was excellent.
There was always a decided break in the tomperature in this area some-
where on the shallow side of 200 feet. On one occasion near IHUO S.KI
an almost horizontal break of 140 was encountered at 150 feet. The break
of about twelve degrees encountered off Shioya Seki at 150 feet didn't
soon to bother the Japs listening much. The instrument was not at all
damaged by the depth charging.

- 17 -

ENCLOSURE (A)

— page 29 —
13. HEALTH AND HABITABILITY
The health of the crew was excellent and probably generally better than when the ship is at a base.

: 14. NITRES STEADY
Enroute to Station 3387
On Station 1760
Enroute from Station 2223
Total 7370

: 15. FUEL SUPPLY
Enroute to Station 12,259
On Station 22,067
Enroute from Station 11,862
Total 96,180

: 16. FACTORS OF ENDURANCE PREVAILING
Torpedoes Fuel
3 17 Decys
Frosh Water
30 days
Personnel
30 days

: 17. FACTOR TERMINATING THIS PATROL
Expedituro of torpedoes and depth charge charges.

: 18. REMARKS
As reported by other vessels the movement of traffic in this area outbound starts at dusk and inbound during darkness. Crews coming out of the Scagni Nada bound south use the east side and crew of O'Shine just as it is getting dark. They then take the passage between Hiyoko Shima and Mii Shima instead of passing eastward of Hiyoko and Hii-laura Shima. Some warships use the latter course going and coming. A submerged patrol close in east of O'Shima is hard to maintain in the three knot current there but a radar patrol between Inariba Shima and Zeni Zu just after midnight should provide some results.

We found the vicinity of Inariba Shima unpatrolled and used it as a departure point quite often. We also lay to there for hours at a time as close as 3000 yards trying to tune our 3J radar. There were evidently no watchers on the rock.

- 18 -

EMCLASURE (A)

— page 30 —
U.S.S. JACK - Report of First War Patrol.

REMARKS: (CONT'D)

No patrol vessels now encountered outside of ten miles from the beach and very far from shore.

Practically no air activity was noted in the area and no patrol planes were encountered either going or coming.

If this area is over incorporated it is recommended that it be divided through this island which is situated in changing his scene of operations will not have to run all the way around than. It cannot be done in one night in summer and sometimes is consequently wasted in unproductive areas around.

The performance of duty of officers and men lost nothing to be desired. The excellent and good conduct of officers and men in the Lieutenant N. P. Roffe III in all the missions; the T.D.C. operation of Lieutenant (JG) J. F. Calvert; the two officers obtained by Lieutenant Commander J. P. Roach on black nights; the ability of the captain and the officers in matters of general repair and improvisation were outstanding. Lieutenant C. L. Goodwin, Ensigns J. T. O'Brien and V. C. Coleman are commended for the general high order of their performances.

It is a privilege to have such officers and men in one's command.

- 19 -

ENCLOSURE (A)

— page 31 —
1. PATROL to JACK first war patrol.
From: The Commander Submarine Division ONE TENTH T/O.
To: The Commander in Chief, United States Fleet.
Via: (1) The Commander Submarine Squadron TWELVE.
(2) The Commander Submarine Force, Pacific Fleet.
(3) The Commander in Chief, U.S. Pacific Fleet.

Subject: U.S.S. JACK (SS259) - Report of First War Patrol - comment on.

1. PATROL occupied a total period of 41 days, PEARL to MIDWAY, with 22 days spent in the area. It was terminated by expenditure of torpedoes and depth charge damage.

2. A total of 21 torpedoes were fired. Nine hits were obtained for a percentage of 42.9%. This percentage would undoubtedly have been higher had not faulty torpedo performance marred the first (a premature) and seventh attacks. In the latter case the spread employed covered an error in target speed of + 4 knots. Attacks were characterized by excellent firing positions, small gyro angles, great skill and tenacity.

3. Good area coverage was obtained. Despite poor visibility in the operating area 16 ships worthy of torpedo attack were found and the only six which could possibly be attacked were attacked at favorable ranges.

4. The material defects listed in section 10 will be corrected during the current refit period. JACK arrived with No. 3 main engine out of commission due to gear failures. Subsequent inspection revealed that engine-generator coupling spring bundles were extremely weak; there being an average deflection of 0".115 in the test machine as compared with a required maximum of 0".084 for a load application of 400 pounds. It is expected that current inspection of the other spring bundles will show a corresponding weakness and that a subsequent magniflux examination of gears will show cracks in a large number of the gears.

— page 33 —
8 01563
SUBMARINE DIVISION 122
F
F05-122/A16-3
Serial 028
Caro of Fleet Post Office,
San Francisco, California,
24 July 1943.

CONFIDENTIAL
FIRST INDORSEMENT to
C&CK first war patrol.

Subject: U.S.S. JACK (SS259) - Report of First War Patrol -
comment on.

5. The excellent performance of JACK on her first
patrol reflects the great zeal and industry of the Commanding
Officer during the fitting out and training of this new thorn
in the side of the JAPANESE. The Division Commander congratulates
the Commanding Officer, Officers and Crew for their splendid ship,
their fighting spirit and the results achieved:

SUNK
1 AC - Similar to HITES MUROTO
1 AP - ANYO MARU Class
1 AK - KYOKKO MARU Class

TONNAGE
8,215 (displacement)
9,257
6,783
24,255 tons

DAI-AGED
1 AK - (Class unknown)
6,000 tons

F.B. WARDER.

F.B. WARDER.

— page 34 —
35259/A16-3
Serial 030-43
SS259 (SS259)
Care of Fleet Post Office,
San Francisco, California,
15 July 1943

Confidential

From:
To:
Via:

Subject:
U.S.S. JACK (SS259) - Report of First War Patrol.

Enclosure:
(A) Subject report.
(B) Track chart for the Commander Submarine Force,
Pacific Fleet.

1. Enclosure (A), covering the First War Patrol of this vessel in area south of Honshu in the vicinity of Tokyo during the period 5 June to 15 July 1943 is forwarded herewith.

Thomas M. Dykers.

— page 35 —
32.07
L.A. 8' 01563

FF12-10/A16-3(5)/(16) SUBMARINE FORCE, PACIFIC FLEET
Serial 0988
Confidential
CIN: 3JXK PATROL REPORT NO. 219
U.S.S. JACK - FIRST WAR PATROL.
From: The Commander Submarine Force, Pacific Fleet.
To: Submarine Force, Pacific Fleet.
Subject: U.S.S. JACK (SS259) - Report of First War Patrol.
Enclosure: (A) Copy of subject war patrol report.
(B) Copy of Consubmarine 122 Conf. 1st. end. FC5-122/A16-3,
(C) Copy of Consubmarine 12 Conf. 2nd. end. FC5-12/A16-3/FB5-121,
(C) Copy of Consub

— page 36 —
1/2/10/16-3(5)/(16) SUBMARINE FORCE, PACIFIC FLEET 1d

Serial 0988
CONFIDENTIAL
CONSUBSAL PATROL REPORT NO. 219
U.S.S. JACK - FIRST WAR PATROL.
Subject: U.S.S. JACK (SS259) - Report of First War Patrol.

DISTRIBUTION:
(Complete Reports)
Cominch (5)
VONO (5)
Cinepac (5)
Serferpac (5)
(Idv. Base Plan. Unit (1)
Cincalant (2)
Consubalant (8)
S/M Schocl, NL (2)
Comcopac (2)
Comsowespec (1)
Comsubsowespec (2)
CTF 72 (2)
CTF 16 (1)
Comsubspec (12)
SUBD, MI (2)
Consubconsubspec
Midway (2)
All Squadron and Div.
Commander, Subspec (2)
U.S.S. JACK (1)
(COMSUBSPEC Endorsement only)
All Submarines, Subspec (1)

R. C. LAWTON,
Flag Secretary.

— page 39 —
1943 to October 10, 1943, Area 4, Operation Order #186-43.

0536(1) Submerged.

0707(K) Sighted a destroyer. (Kanikazco Class - tripods have replaced the stick masts). (Contact #1). A good look was taken and no other vessels were in sight so decided to fire on her. When the range reached 2500 yards she zigged away about 400' and left us with a firing range a little over 3000 yards and track angles of about 130°8. Fired four (4) torpedoes spread 1° apart and missed. The torpedoes were not detected until after they had crossed the track after which she turned toward and commenced depth charging. None was close but she continued to ping and drop charges until about noon.
On surfacing again tried to get a message through to Consubbao concerning my decision to leave the area. It was broadcast on the basic frequency and on two harmonics but no receipt acknowledged. We are undoubtedly in a radio dead spot or something is wrong with our transmitter.

2246(K) I'd read radar contact with small vessel. Commenced approach. Vessel turned out to be a small, apparently wooden, petrol boat - broke off approach and avoided. (Contact #2).

Sept. 28. 11:00(K)

At same time requested authority from Consubbao to continue patrol in the more open waters around Harcus and Wake. These waters provide a much shorter run to unpatrolled areas in the event of further trouble with the H.O.R. engines.

Sept. 29 0115(K).

— page 41 —
1943 to October 10, 1943, Area 4, Operation Order #186-43.

(C) AIRCRAFT SIGHTED
No. Time/Date    Lt/Long    Type    Name    Course    Hour
1. 1235(N) 9/16 3-30-38N    Patrol 20 mi.    250    Sighted

(Hi) ATTACK DATA
ATTACK #1
Time 0716(K)    September 26, 1943    Lt.33-45ft Long.1410-22ft

Target Date: Distance Inflicted

Description: Destroyer - Enckzee class - single ship. This ship had her original stick rests replaced with tripods fore and aft. The hoist of the foretop above the waterline is estimated as fifty-five feet - sixty five feet. This class ship was used in this approach.

Ships sunk: None.

Ships damaged or probably sunk: None.

Damage done to: None.

Target draft: 9'6", Course 017, Speed 14, Range 3200.

Own Ship Data:
Speed 4, Course 324, Depth 63', Angle 10° down.

-25-

— page 42 —
1943 to October 10, 1943, area 4. Operation Order #186-43.

Fire Control and Torpedo Data

Type - Day periscope:
- Tubes Fired #1 130 S 130 S 130 S 131 S
- Track Angle 8 ft. 8 ft. 8 ft. 8 ft.
- Depth Set High High High High
- Power Miss Miss Miss Miss
- Hit or Miss No No No No
- Erratic XIV-3 XIV-3 XIV-3 XIV-3
- Mark Torp 39229 39507 39227 39542
- Serial # VI VI VI VI
- Mark Exploder 7086 7095 17572 7079
- Activation Set Contact Contact Contact Contact
- Activation Actual None None None None
- Mark Warhead XVI XVI XVI XVI
- Serial No. 5497 1904 1797 1422
- Explosive Torpex Torpex Torpex Torpex
- Firing Int. 6 sec 6 sec 6 sec 6 sec
- Type Spread 10 10 10 10

Divergent Divergent Divergent Divergent
Sec Conditions Lumpy Lumpy Lumpy Lumpy
Overhaul activity S.B. Pearl S.B. Pearl S.B. Pearl S.B. Pearl

Remarks:

Aside from the poor position stationed it is believed that the primary cause of the missile was the over-estimation of the method height thereby causing a larger range and greater speed estimate than actual.

(1) MINES

None encountered.

(7) AWT-SUR-ARCTIC 12-SURFS AND VIVASTON TACTICS

After our attack on the destroyer on September 26th he turned and ran down the torpedo tracks and accelerated dropping depth charges. The Jack went to 350 feet on a course at right angles to the initial bearing of the DD. He dropped 32 charges none closer than 500 yards.

In searching he used both listening and echo ranging. Echo ranging was on 17 less with ping intervals of four and eight seconds. He occasionally shifted to hand kevlar to investigate contacts.

-6-

— page 44 —
1943 to October 10, 1943, area 4, Operation Order #186-43.

RADAR

The operation of both the SD and SJ radar was extremely satisfactory. The S.J. gave ranges and bearings on a 2800 ft. island at 36 miles.

It is a well known fact that the SD does not pick up planes flying at a low level and since most patrol planes fly fairly low its practical effectiveness is greatly reduced.

The Radar Officer, Ensign John F. Byrne E-V(N3), USNR now in his first ship knows his specialty and the particular sets we have on board extremely well and deserves a great deal of credit for keeping the wrinclcs ironed out.

SCUBA GEAR AND SOUND CONDITIONS:

The sound gear operated very satisfactorily. At 0707(1) in Lat. 39-45 N Long. 141-20 E we were unable to hear the screws of a destroyer making 12 knots at a range of 2200 yards nor could we hear her screws at a lower than 1200 yards. The ship's depth charge was 150 feet. The sound gear was in working order and the ship was in good condition. The sound gear was in working order and the ship was in good condition.

The J.P. destroyer used echo ranging on 17 kcs keying at the rate of one every four seconds for regular search. He used a long scale of one ping every eight seconds at times and occasionally shifted to hand to investigate contacts.

DEFINITY LAYERS

There was a pronounced temperature gradient always present with the first decided cold break occurring anywhere between 80 and 150 feet. Each morning drives to 250 feet were made to locate the layers with the bathythermograph and to estimate the necessary change in trim. Initially, a typical e.r.d was made on September 2th at 0530(1) in Lat. 35-06N Long. 141-47S where a temperature break of 6° occurred between 5 depth of 140 feet and 160 feet.

HEALTH, FOOD AND HABITABILITY

Health, food and habitability were excellent. One man suffered with an infected hand which had to be opened and he had 21 sick days.

— page 46 —
1. The Commander submarine Division CDR T. D. T. T. O.
To: The Commander in Chief, United States Fleet.
Via: (1) The Commander submarine Squadron T. L. V.
(2) The Commander submarine Force, Pacific Fleet.

Subject: U.S.S. JACK (SS-259) - Report of second war patrol.

1. The second war patrol of JACK occupied a period of 36 days, six days of which were spent in area south of HONSHU and six days on special missions.

2. The lack of results may be laid directly to another H.C.R. engine failure. On the sixth day in the area the crankshaft of No. 2 main engine broke at the web between No. 4 main and crank bearings. The Commanding Officer decided to return to base as he felt grave concern for the state of fatigue of the other crankshafts.

3. There were two enemy ships contacts (a patrol vessel and a KIAKAZ destroyer). One enemy aircraft was sighted.

4. It is considered that the Commanding Officer erred in attacking the KIAKAZ with an unfavorable firing position (3,200 yards, 1300 track), in a daylight attack, when other more important traffic could be expected. The net result was to immobilize the submarine for five hours while evading destroyer anti-submarine measures.

5. It is also considered an error to go intentionally to 350 feet for evasion when a six degree gradient exists between depths of 140 and 160 feet, for the following reasons:

(a) Test depth of the ship is 312 feet and it serves no good purpose to impose high static stresses on certain portions of hull and hull fittings when high kinetic stresses, account depth charge explosions, can be expected to be imposed through at any moment.

(b) Leakage into hull through stern tubes and other hull fittings is accentuated, resulting in increased pumping demands at a time when pumping is likely to be most undesirable.

— page 48 —
FCS-12/A16-3/FB5-122  SUBMARINE SQUADRON TWELVE  TTL
Serial 078
CONFIDENTIAL
SECOND EDITORS: Mr. T. C. 14 October 1943.
CO JACK Conf. 1tr
A9 Serial 034-43
of 10 October 1943.

From:  The Commander Submarine Squadron Twelve.
To:  The Commander in Chief, United States Fleet.
Via:  (1) The Commander Submarine Force, Pacific Fleet.
    (2) The Commander in Chief, U.S. Pacific Fleet.

Subject:  U.S.S. JACK (SS259) - Report of Second War Patrol.

1. The Commanding Officer's decision to return to base because of a major machinery derangement was sound in view of the many previous casualties to H.O.R. engines.

2. The remarks of the Commander Submarine Division One Twenty Two relative to the attack on a KAMIKAZE Class Destroyer, and the deep submergence of JACK are concurred in.

3. It is regretted that a major machinery derangement caused the termination of the JACK's second war patrol.

J. B. GRIGGS.

— page 49 —
11/10/46-3(8)/(16) SUBMARINE FORCE, PACIFIC FLEET
Serial 01460
Care of Fleet Post Office,
San Francisco, California,
14 October 1943.

THIRD ENDORSEMENT to
J.C.K. Report of
Second War Patrol.

COMSUBSPAC PATROL REPORT NO. 285
U.S.S. JACK - SECOND WAR PATROL.

From: The Commander Submarine Force, Pacific Fleet.
To: The Commander-in-Chief, United States Fleet.
Via: The Commander-in-Chief, U. S. Pacific Fleet.

Subject: U.S.S. JACK (SS259) - Report of Second War Patrol.
(5 September to 10 October 1943).

1. The second war patrol of the J.C.K was conducted in an Empire area.
2. The patrol was terminated early because of machinery casualties.
3. This patrol is not considered successful for Combat Insignia award.

C. A. LOCKWOOD, Jr.

DISTRIBUTION:
(Complete Reports)
Cominch (5)
CNO (5)
Cincpac (6)
Intel. Cen. Pac.
Ocean Areas (1)
Comservpac (1)
(Adv.Base Plan.Unit (1)
Cinclant (2)
Comsublant (8)
S/M School, NL (2)
Comsopac (2)
Comsowespac (1)
Comsubsowespac (2)
CTF 72 (2)
CTF 16 (1)
Comsubpac (18)
SUBD, MI (2)
ComsubpacSubbroom (2)
All Squadron and Div.
Commanders, Subpac (2)
U.S.S. J.C.K (1)
(Endorsements only)
All Submarines, Subpac (1).

J. A. WOODRUFF, Jr.
Flag Secretary.

— page 50 —
1.3.S. JACK (35259)
Serial No. CD-44
Care of Fleet Post Office,
San Francisco, California.
13 March 1944

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

Subject: Report of Third War Patrol.

Enclosures: (a) Subject report.
(b) Track Chart (C.T.F. 71 only)

1. Enclosure: (a) and (b) covering the Third War Patrol of this vessel conducted in the South China Sea during the period January 16th to March 13, 1944 are forwarded herewith.

[Handwritten text: 11/11/44, Thos. I. Dyers.]

71364

— page 52 —
5.5.5. Jack, Patrol from January 16, 1944
to January 13, 1944 in the South China Sea. Operation order #17
26-44.

n. 21 Entered Jday - topped off with fuel (22,470 gal)
lub., water and stores and connected repairs to
broken radar cover drive.

n. 24 Ingress conducted.
400 (Y) Deleted Jday.
615 (Y) Ince trim give. In surface life transponder in S.D.
radar carrier only in tender series started out.

2100 (Y) 5.J. radar t. mining gear re-actly received at Jday
Jan. Decided to return to Jday for repairs and
sent J.D. serial #3 informing Consubmarine Comsubc and Comsubc
group 17.5.

Jan. 25 Sighted Jday.

0710 (Y) "as informed that weather was too bad to enter.

Jan. 26 Entered lagoon at Jday on commenced repairs to
1400 (Y) both reactors. To need off with fuel, lub., water and
stores.

Jan. 28 Deported Jday for air conducting training exercises
0530 (Y) cruise.

Feb. 5 Love on 3.D. radar contact at four miles. Had been
0728 (Y) keying it once a minute passing across island which
turned out not to be often enough. There were low
h. main clouds in patches and this plane was never
seen. Received one bomb passing 60 ft. which was not
at all close and two more which were on after
1.

— page 53 —
1944-01-16
Tiger Patrol, U.S.S. Jack. Patrol from January 16, 1944 to March 13, 1944 in the South China Sea. Operation Order CTF 17, 26-44.

---

### 1430 (X) Surfaced.

---

### 1625 (X) Submerged on sight contact with plane. (Contact #2). It seems that after bombing us this morning the locality was searched pretty well all day by medium bombers. We were not sighted by the last three co-tactics. Cruces bore about 135T, distance 200 miles. Ten contacts were made the 3. D. was being run continuously and none of these planes were headed toward us when sighted. The first plane they have been coached from across but the chances are that he just stumbled on us. If he was coached on the keying certainly did no good.

---

### Feb. 8
0900 (I) Encountered a Task Force 71 in accordance with operation order.

---

### 1350 (I) Recovered Japanese red and white life ring bearing the numerals 389. It appeared to have been in the water about two weeks. Position: Lat.21-39N - Long. 133-54.

---

### Feb. 10
2348 (H) Sighted small fishing or patrol boat. . .voided. Lat. 19-50N - Long. 121-40.

---

### Feb. 11
0556 (H) Submerged at intersection of .familia-Tekao and Singapore-Japanese traffic routes. Sea very rough.

---

### 1017 (H) Sighted four small trawler type vessels standing down from the north. Each too rough for gun action and vessels too small for torpedoes - besides do not desire to disclose a. presence at this intersection over targets of such small value. .voided. Surface at sunset - sea has calmed down considerably.

---

### 1200 (H) Position: Lat. 19-36N - Long. 120-16T.

---

### Feb. 12
0358 (H) Submerged in same position as yesterday.

---

### 1000 (H) Surfaced.

---

### Feb. 13.
1413 (H) Drove on radar contact with two planes. 12 miles. Planes not sighted nor was the submarine attacked.

— page 56 —
1944 to March 15, 1944 in the South China Sea. Operation Order
OTF 17 - 46-44.

---

**Operation Order**

**15.3.5 (H) Surface Raider - Owned the far eastern leader had
reached us as escort and was standing out to the north
at a range of about 5,000 yards. Coincued the approach
on the latter vessel, which was zigging wildly every
couple of minutes. . . .**

**2052 (H) - First torpedoes from the bow tubes. (attack 3).**
Lat. 15-45N - Long.115-53E from a range of 1,800 yds.
The first aimed at the HOT ditch! turn, the second
aimed ahead was normal and went ahead, the third was
cold and erratic and passed astern. These torpedoes
had been made ready during previous attacks. . . . so
turned away and laid our cloud of 'Ninton smoke' to
opened up 'with his five incher on the poop. They were
close - one came in from about 160° relative and
passed over the forward deck just below bridge level.
The shell did not explode but the whole ship shook as
if she had been hit. It must have been a near miss
since so far there is no evidence of damage. Opened
the range to 8,000 yards, reloaded forward, and
commenced another approach. This time his zig's were
nothing short of frantic. 'I'orked ahead of him while
he was on legs away from us and waited for him to
come back. The fire control party was able to tell me
when the target started to turn and give me his course
accurately within 30 seconds after he studied on.
Ranges were being chosen on the T.D.C. very ten yds.
. . .**

**2353 (H) - Pierced four torpedoes (attack 4). Lat.15-59N - Long.**
115-55E and got three hits. Like the others he explode and was completely enveloped in tremendous flames
instantly. No shooting the five inches this time.
During this attack radar picked up what appeared to
be one of the mysterious vessels escorting us
from the south. He was making about 17 knots and
managed to close the range to 3,000 yards before it
was too late for him to do any good. He'll have a
hard time explaining to Jojo why he left his ship.
Those were large modern tankers seen through the
periscope in the dusk attack - and I am at a loss to
explain their too speed of ten knots. Perhaps they
have a slow tanker building program similar to our
Liberty Ship program. . . .**

---

-6-

— page 57 —
1944 to March 13, 1944, in the South China Sea. Operation Order CTF 17 #26-44.

Feb. 19 Having to make a second attack on this ship caused 2233(H) to lose radar contact with the last of the five tankers and his escort. Stood off in the direction in which he disappeared at full speed but was unable to regain contact. 'Would sure like to have made it a clean sweep. To summarize, the day: torpedoes fired 17, hits 11; sh!s sunk, four tankers totalling approximately 40,000 tons and an escort vessel of unknown type and size probably sunk. This escort was hit by torpedoes set at 10' so 1500 tons is estimated.

Feb. 20 Proceed to the vicinity of Lat. 17-20N - Long.115-15E in an attempt to intercept traffic north of Macclesfield Bank.

Feb. 21 No contacts so deseribed for the vicinity of Scarborough Shoal at daylight.

Feb. 22-23 Position: Lat. 15-00N - Long. 117-22E. No contacts so proceeded to the traffic lanes south-1200(H) east of Macclesfield Bank at noon twenty-fourth.

Feb. 29 Position: Lat. 14-47N - Long. 114-44? sighted by high 1309 (H) periscope, the fire control tower of what turned out to be a heavy cruiser of the N.C.H.I class. (contact #4). 'Would like to have run ahead of this fellow to better determine his base course but these 'intons make such a horrible cloud of smoke when any load is put on them that after witnessing but not an attack aboard and on the bow with the range closing fast decided to dive. He had no planes up and no surface escort. He was making twenty-five knots and in spite of our best efforts we couldn't close the range below 9,000 yds. This was a tough one to lose.

1500 Proceed to the vicinity of Scarborough Shoal.

Mar. 1 Lat. 15-00N - Long 117-29E made contact by radar with 0100(H) a convoy at 25,000 yards (contact #5). It consisted of four large ships (1.0, 3.1) and two escorts on base course 1650. During the early stages of the approach the speed checked at fourteen knots and at the time of firing it was eleven. He had four torpedoes aft and three forward so desired to make the first attack with the stern tubes if possible.

— page 60 —
35. JACK (53.59)
CONTINUED:
Third Year 2tr., ... Jack. Period from January 16, 1944 to March 13, 1944 in the South China Sea. Operation order 17 #26-44.

1. 3
(Cont'd)
1323 Surface.

1. 4-6
1.

— page 61 —
1. USS S259 (SS259)
CONFIDENTIAL

Tired Her Patrol, U.S.S. Jack. Period from January 16, 1944 to March 13, 1944 in the South China Sea. Operation Order CTF 17.26-44.

| No. | Time/Date | Lt/Long Type | Initial | Dist. | Course | How |
|-----||||-------|-------|-----|
| 1. | 23:48-1/2 | 19°-500N | Ficling | Sneed | Cont. | Raks. |
|     |           | 121°-400E  | Yds     | 130-9 | Sght | Sall |
|     |           |              |         |       |       | Pig on |
|     |           |              |         |       |       | radar |

2. 1017-1/4/11 120°-160° 119°-589N 120°-160° 1140-070°

— page 62 —
U.S.S. J.CK (SS259)
CONFIDENTIAL:
Third War Patrol, U.S.S. Jack. Period from January 16, 1944 to March 13, 1944 in the South China Sea. Operation Order CTF 17 26-44.

SHIP CONT. (CONT'D)
Initial 25T. Course How
No. Time/Date Lat/Long Type Range Speed Cont. Remarks
6. 0900-H 3/1 130-280N 118°-30°N Convoy 14,000 150-10 kts. cove
80

— page 67 —
3 DESCRIPTION (CONT'D)
He set the s.e.t.n.g his deck gun and layed some in
pretty close as to turned away.

These torpedoes had been made ready on the previous
attack (submar) and undoubtly flooded.

Ships sunk: None

Ships
Damaged: None

Target Data: Course 310°, Speed 9 kts.

Own Ship
Data: Course 200°, Speed 7 kts; 1.6m firing range 1610 yds.

Type
Tubes Fired
Truck Angle
Tro
  th Set
  or
  or liss
  or l

— page 68 —
3.5. JAGL (3.259)
Tid: 1944
To: North China Sea, Operation Order CTF 17
6-6-44

: 3.5. JAGL (3.259) TCDD JAGL 1YC. 4. Patrol No. 3 Time
: 23H, Febr 19, 1944. Lt. 15-59Y - Ltr. 115-35B.

Target Data:
Description: This attack was made on the same target as attack #3
    - Target: torpedo rocket
    - Weapon: 11" high explosive
    - Range: 4,000 yards
    - Time: 4 minutes
    - Direction: 180 degrees
    - Speed: 5 knots
    - Elevation: 0 degrees
    - Course: 0 degrees
    - Speed: 5

— page 69 —
3.5. TAC (SS259)
TAC Control and Torpedo Data (Cont'd)
Serial: 7761 91 5002 4774
-ctuation Set: Cont.ct Cont.ct Cont.ct Cont.
-ctuation -actual: " " " " "
-ark: W-I-1 W-I-1 W-I-1 W-I-1
Serial No. 11276 11271 2602 10361
X-losive TX TX TX TX
Firing Int. - 7 5 7
Type: Strad AR AL 1AR
Sea Conditions: Tod Tod Tod
Overall Activity: Scarry Scarry Scarry Scarry

U.S.S. JACK (SS 59) TAC/TC 1TACU No. 5, Patrol No. 3, TAC
SS59, March 1, 1944. Lat. 14-52N - Long. 117-48E.

Target Data:
Description: This attack was a dive on a convoy consisting of one
tanker or engines aft vessel and three conventional
torpedo scouts by two vessels of unknown type. The
rat was dark and the approach in the early phases
was conducted by radar alone. Then the targets
were visible night polarous bearings and radar
ranges were used. Traffic for some time to jockey into
position for stern tube shot because we had four
lifes of no only three forwar but couldnt make it
on account of the short lags of their zig plan. The
targets were roughly in column with an escort on
either flank about ten thousand yards. Fire three
torpedoes at the second ship in column at an average
range of 2625 yards using a one degree div right
spread of the first torpedo fired to hit. The hits
were obtained. After the second hit the target
exploded violently and issued a lot of smoke from
midships. The convoy scattered and the near escort
turned towards giving us some anxious moments as we
turned away until it was separated that he didn't
see us. Then the convoy scattered the third ship
in column turned toward 650 and he set us up for
attack. With the stern tubes, after attack 6
the ship which had been hit in this attack (45)
and was giving off so much smoke after an explosion
could not be seen and disappeared from the radar.

-19-

— page 76 —
1. S. J. D. (3-259)

OCDENTIAL:
Third per. to 1st, 1944 in South China Sea, Esperi ncrd r CTF 17 26-44.

(P) TITLE, FCD H.B. 31117

After getting over colds contracted at Ridway the health of the crew was really not. One man was transferred to the submarine as it flew with measles and for untold years no one else contracted it. The man I think is the one of the patrol.

The food could not I approved on a list, lunatic or practitioner. The crew is I deported a srvr a great deal of credit. The ice-crammed, untent installs it are Island furnished good ice-crammed, untent, the barracks were not. The barracks were not.

The fine navigation and experience of Commander F. Y. Lein, USN, the DDC commander, was of great assistance to the Commander. The performance of the officer's and enlisted personnel was indeed outstanding. Lieutenant Peabody, the officer's chief, was a man of great experience and ability. The officers and men of the crew were all highly qualified and were well trained

— page 78 —
25 March 1944.
From: The Commander Task Group SEVENTY ONE POINT THREE.
To: The Commander in Chief, UNITED STATES FLEET.
Via: The Commander Task Force SEVENTY ONE.
Subject: U.S.S. JACK (SS259) - Report of THIRD War Patrol.

1. The third war patrol of the JACK conducted endurance from Pearl Harbor to Fremantle, was one of 58 days duration, of which 6 days were spent at MIDWAY undergoing minor repairs, and 19 days in the assigned patrol area on the SOUTH CHINA SEA. Twenty-four torpedoes were fired with the excellent results of fifteen hits, and in damage inflicted, this is one of the outstanding submarine patrols of the war to date.

2. A total of four contacts with worthwhile targets were made, three convoys and a heavy cruiser of the "NACST" class. JACK was unable to close this cruiser to firing range, all torpedoes were expended in a series of aggressive, persistent surface and submerged attacks on the first two convoys. A perfect opportunity to attack the third convoy had to be passed up due to lack of torpedoes. The entire patrol reflects the seasoned judgement of the Commanding Officer, and marked skill in analyzing all the facilities at his command.

3. (a) Smokey exhaust from the General Motors' engines, continues to be a military deficiency of which the Bureau of Ships is cognizant. Progressive steps are being taken to eliminate this defect. It is hoped that all control rings now on order will improve this condition.

(b) The operation of the SD mast limit switch during battery charges will be checked, and a marked installed to indicate the proper position of the mast when raised.

(c) The power training of the SJ is being investigated and if the proper rheostat can be obtained, the slow speed and reversing feature will be installed during the current refit.

(d) The comment on the JP listening gear bears out previous reports of obtaining much greater ranges with the JP than with either the JK or QB.

— page 79 —
25 March 1944.
Subject: U.S.S. JACK (SS2559) - Report of THIRD War Patrol - comment on.

4. The improved SIA Radar and P.P.I. was an important contributing factor to the success of the patrol. This equipment should be installed on all submarines at the earliest possible date. Material condition and state of upkeep and cleanliness upon return from patrol was outstanding.

5. The Squadron Commander takes great pleasure in welcoming JACK to this force, and in congratulating the Commanding Officer, officers and crew upon an outstandingly aggressive and successful patrol.

— page 80 —
24-71/A16-3
Serial: 0307
C-0-N-F-I-D-E-N-T-I-A-L
SECOND ENDORSEMENT TO:
USS JACK Conf.1tr.A16-3
Serial 0191, dated 25
March, 1944. Report of
3rd War Patrol

Facts:
The Commander Submarines, SEVENTH FLAG.
The Commander in Chief, UNITED STATES FLAG.
The Commander SEVENTH FLAG.

Subject: U.S.S. JACK (SS259) - Report of Third War Patrol - Comment on.

1. The remark of the Commander Submarine Squadron SIXTEEN are confirmed in.

2. JACK's Third War Patrol is distinguished by aggressiveness, determination, good judgement and skill of the Commanding Officer coupled with the all important perfection, teamwork and high state of training of officers and crew. JACK, in sinking five gasoline loaded tankers, dealt the enemy a heavy blow.

3. The Commanding Officer's remarks regarding the smoking of the main engines are fully concurred in. This smoke, which has been noted in all submarines powered by similar engines, constitutes a definite military hazard, forswearing the target of the attack as well as endangering the submarine's safe retirement. While it is understood that some improvements may be expected when the proper oil control rings are received, it is strongly urged that efforts to further reduce or absorb smoke, particularly on change of speed, be redoubled.

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

5. The Force Commander takes great pleasure in congratulating the Commanding Officer, Officers and crew on this outstanding patrol in which the following severe and impressive damage was inflicted on the enemy:

-1-

— page 81 —
FE24-71/A16-3
Serial:  0307
Subject:  U.S.S. TAKT (SS259) - Report of Third War Patrol - Comment on:
SUNK
1 - AO (KOKUEI NARU)

— page 82 —
18 APR 1944
UNITED STATES FLEET
COMMANDER SEVENTH FLEET
Alg-3/(F-6/cw)
Serial: 0874

CONFIDENTIAL
THIRD ENCLOSURE to:
CO USS JACK (SS259)
Conf. ltr. Serial Cd-44
dated 13 March 1944.

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

Subject: USS JACK - Report of third War Patrol.

1. Forwarded.

R. H. CRUZEN,
By direction.

— page 84 —
1944, 1st patrol, U.S.S. Patrol, Period from April 6, 1944 to May 10, 1944 in the South China Sea. Operation Under the Sea.

PRICING:
- Arrived Fremantle, 1944, from third war patrol on March 13, 1944. Left Fremantle on April 6, 1944, and arrived at Fremantle on April 10, 1944. Total time in Fremantle: 14 days. Total time in South China Sea: 14 days. Total time in South China

— page 85 —
1655  Surfaced.
1622  Sighted plane (a.C. contact #2) and cover, not sighted.
1706  Surflaced.
April 12
0625  Sighted plane (a.C. contact #3 and our tank in seventeen hours) and cover. This occurred sixty miles during 222 from the pass between S. 0

— page 87 —
5.3.3. JACK (5259)
CERTIFICATE
Fourth War Patrol, U.S. Jack. Period from April 6, 1944 to May 10, 1944 in the South China Sea. Operation Order #41-44.

April 15. either patrolling or snouts Devao to Palau.
0944
(Cent'd)
1054
Surfaced.
During the evening, converted 94 fuel ballast tank into a
ballast tank.
1340
under 5d on radar contact with plane at eighteen miles
(A.C. contact 7)
1430
Surfaced.
April 19
0652
Lade red. contact with the plane at 15 miles
submerged - not attacked. (A.C. contact 7)
0740
Surfaced. Running in Tachyon field. Radio lines.
April 20
Spent the night patrolling at right angles to the fukao.
Falau traffic lanes in the vicinity of 14°-2°N. - 12°E.
43°S. In order to wait for any traffic that might be
following us.
April 21
0523
Submerged on contact with patrol plane (A.C. contact 7)
apparently not sighted. Utilized this day for morning
deep submarine and train.
0628
Surfaced.
1300
Abandoned patrol of fukao-Felau traffic lane and set
course direct for Ballitang Channel.
2350
Sighted light (ship contact 2) and closed until it was
seen to be low on this water, apparently fairly close
and radar could not pick it up. Decided it was a
fisherman and proceeded. This occurred forty-miles
east of Ballitang Channel.

April 23
Spent the day submerged patrolling Bellitang Channel.
40 contacts. (In surface, proceeded to focal point of
traffic in the vicinity of 15°-50°N, Long. 120°-30°E.

— page 89 —
2000
Concentrated working ahead around the starboard or western flank at about 14,000 yards range. The largest ships in the convoy were disposed in two columns with four ships in the western column and three in the eastern. The escorts visible in the radar were disposed as follows: one eastern of each other three thousand yards - two on the west flank ahead three thousand yards and one westward of the two to broad on the bow of the west column about the same distance. The escorts on the east column about the same distance on the radar at this time out were there, one convoy was escorting the convoy with 1900t units. 20 between the two in the radar were escorting the convoy with 1900t units. 20 between

— page 96 —
U.S.S. J.C. (35259)
U.S.S. J.C. (35259) Torpedo Attack no. 1, Patrol #4, Time 0320 F,
April 15, 1944. Let. 3-335 - Long 124-30B.

Target Data: Dazzle Flickered

Description: At 2300 H on April 14, 1944 made radar contact with a group of two medium sized ships at 21,500 yards. Commenced tracking target and working up from a position abaft the beam to an attack position. Radar showed the two ships in line of bearing normal to their base course of 263° at an interval of about 3,000 yards and one escort patrolline ahead at 3,000 yards. The target was 13.5 knots. Commenced 2,000 yards to the east of the target and 90° port track but was thwarted by the presence of a flank escort which bore 037° relative from J.C. at a range of 2600 yards when picked up by the lookout. Broke off the attack and commenced again this time attempting to come in under the stern of the flank escort. In patrolling, its station he dropped back on us and forced us to fire on an average track of 12° port at an average torpedo run of 4,900 yards, 10 divergent spread. The first torpedo sank at the firing point and no hits were obtained with the other three.

Ships sunk: none

Target Data: Course 2630, Speed 13.5 knots; mean range 4216 yds.

Cum ship data: Course 325, Speed 5

— page 106 —
6. Erratic performance:
(a) Two 3"/50 stog pegs due overalize annulition. The shell would not set and brang separated from the shell upon attempting to extract. The projectile was removed both times with clearing cingress.

(b) An excessive number of 2c am stoppages caused by combination of hickback, ruptures, contractions, crimped ammunition, and improper firing sustained magazines occur.

U.S.S. T.CK (35259) (run attack no. 2. Patrol no. 4. Time 0410 H. 0311 25, 1944. Lat. 17-34 - 1.46. 124-06B.

Target Data
Sunk: One on hand red and two on steam trawler - identity unknown except that the Japanese merchant vessel was pulled on his bow. Pictures and structures and depenses characters identify this vessel.

Damaged: none.

Damage Det mined by: as observed from sight at four hundred yards in daylight this vessel was buried fiercely and both hull and superstructure were shattered by heavy charges and twenty million hits. Her crew were awash and she was listing severely to starboard when left.

DET. 1/50 CTL

1. Type guns used.
   3"/50, 20mm.

2. Armor penetration.
   (a) 3"/50 - 16 rounds high capacity
   43 rounds tracer piercing

   (b) 20 mm - 32 rounds high explosive tracer
    640 rounds high ex explosive incendiary

-23-

— page 107 —
3. Effectiveness of fire
The vessel attacked was a steam driven wooden trawler. He was hit by the first salvo fired at a gun range of 4,000 yards and did not return fire. He commenced to turn after three hits but was slow to sink in spite of seizing holes in his side from 3" and twenty millimeter.

4. Average range
First round from 3"/50 at 3700 yards insufficient range.
Average range 1400 yards.

5. Fire Control
First round on radar range. Charges visual sight.

6. Erratic performance.
Normal amount of 20 mm stoppages due to gun causes as first attack, except that no stoppages could be layed to improperly tensioned magazines.

(I) | [HINT: text here]
Name encountered.

(II) | [HINT: text here]
Enroute to the area enemy aircraft reconnaissance was found to be quite strong throughout the night. He was crossing the plane contacts made on the afternoon of 1st July were about 260 miles southeast of Lepeira. There another plane was encountered the following morning covering the approaches to the above sea. He were forced down by planes twice on the eighteenth once on the nineteenth and once on the twenty-second of 1st July running north approximately to the number miles east of the Philippines. The fact that there was an American task force at sea at this time may account for some of this activity. After the 1st of the 2nd, the

— page 112 —
1944-1945
U.S.S. JACK (SS-259)

Fourth War Patrol, U.S.S. JACK. Period from 1941, 1944 to May 10, 1945 in the South China Sea. Operation Order #41-44.

(R) LINES STATION: FUEL USED
Preamble to area 4348 Miles 42,012 Gallons
In area 346 Miles 4,346 Gallons
From area 3687 Miles 55,003 Gallons

(T) FUEL COMBINED CRUDE OIL AND NATURAL GAS

Torpedoes (#) - One
Personnel (Days) - 30
Fuel (Gal) - 22,000

Limiting factor of this patrol - Equipment of torpedoes.

(TU) RULES

1. The Jack learned a great deal from its first gun sections. To have conducted many training battles surfaces which have gone as smooth as you please but our first combat surface was anything but smooth. The had never actually landed enough ammunition in training to properly drill the de-coupling and fuse setting crews. The unit was slow and scarce twenty-millimeter magazines came up without the proper spring tension. The first round to go in the three inch would not seat and extraction it stayed in the bore and sparted from the case. A clearing charge was necessary but both of them were in the magazine. It least one should be kept in the ready service locker. All this trouble caused entirely too much work passing and general confusion. Now that ammunition is not so critical it is recommended that each subr mine that has not rec.ntry fired an actual combat surface be required to fire a real test of its main and twenty-millimeter battery during the training period once every three patrols or as a new commanding officer may desire. There is no substitutes for actualy doing it. It least forty round of deck gun a munition and six twenty-millimeter magazines. The sub should be fired. Twenty-millimeter ammunition that is not in magazines might just as well not be on board as far as a particular action is concerned. It is recommended that the allowance of twenty-millimeter magazines be increased from twenty-four to thirty.

-28-

— page 115 —
7. Individual ammeters for each charging lead must be installed to make charging in serialed practicable. These ammeters are on board and available for this purpose.

8. The rheostat on the bare island charging panels was a constant source of grunts. It must be more carefully insulated.

9. Long lead for the burner connection should be supplied with the torpedo. It is not long enough on the lower tubes.

10. The substitution of the Pearl Harbor design requires lug in place of the present ycking and for the current lead is highly desirable.

11. The present loading role situation is not favorable. Propeller sheets could be too easily but too much airsided.

-31-

— page 116 —
FC5-12/A16-3/FB5-122  SUBMARINE SQUADRONS THRU
Serial 052  Crew of Fleet Fleet Office, San Francisco, California, 19 May 1944.

From:  The Commander Submarine Squadron TWENTY.
To:  The Commander-in-Chief, United States Fleet.
Via:  (1) The Commander Submarine Squadron FIFTEEN.
    (2) The Commander SUBMARINE FLIGHT.

Subject:  U.S.S. JACK (SS259) - Report of Fourth "Air Patrol."

1. The JACK's Fourth War Patrol, under the command of the same Captain that met the ship in corrision, lasted for a period of 24 days; four of these days only were spent in the area assigned. All torpedoes on board except one, which would not fit the tube properly, were fired.

2. Four torpedo attacks were made and all were night surface. In addition, there were two gun actions.

(a) First Attack - Due to maneuver of the screen JACK was unable to obtain a good firing position and failed to get any hits out of the four torpedoes fired; one of the four fired failed to run. It is regretted that the route and speed of the convoy precluded an end around run for JACK at such time that she could not.

(b) Second Attack - Maneuvers of the screenings vessels indicated that the JACK was very probably detached by radar. The Commander Officer's decision to investigate the other five torpedoes in action was sound. A decision to fire torpedoes at an enemy range of 7,600 yards even with a "nine" torpedo is one that can only be made while on the scene but it must be borne in mind that a decision such as this should only be reached after sound intelligence is received controlling variable factors. The fact reminds that in this case, out of six fired, two torpedoes were observed as hits and two additional were heard in the next five minutes as hits.

(c) Third Attack - This was the same as the previous one, but the torpedoes were fired; this time four hits were observed and two additional were heard in the next five minutes as hits. The average range was about 7,200 yards.

— page 117 —
5-12/16-2/15-122 SUBMARINE SURVIVAL TRAVEL
Serial 052
CORRECTED
FIRST ENCOUNTER TO
U.S.S. JACK REPORT
OF FOURTH WAR PATROL.
Subject: U.S.S. JACK (SS-255) - Report of Fourth War Patrol.

(1) Fourth Attack - This was on a single ship of the same convoy which left the "Peruition" on the 6th May 1944. The ship was in the 4th hour of the day

— page 118 —
22-7-1/AL6-3
Serial: 0518
June 2, 1944.

SUBJECT: TO: U.S.S. TACL Conf. Lt. serial 06-44, dated 10 May, 1944. Report of Fourth "Tar Patrol.

From: The Commander Submarines, SEACTH FLET.
To: The Commander in Chief, U.S.S. TACL FLET.
Via: The Commander SEACTH FLET.

Subject: U.S.S. TACL (SS-259) - Fourth "Tar Patrol - Comment on.

1. TACL's Fourth "Tar Patrol" was conducted in the SOUTH CHINA SEA Northwest of LUZON. The remarks of the Commander Submarine Squadron TACL are concurred in.

2. The exercise ranges TACL was forced to accept, due to the excellent disposition of enemy escorts designed to guard against night surface attacks in enemy's range. Of the value of having torpedoes capable of being set to run at long ranges. This condition will undoubtedly be encountered more frequently in the future particularly when operating against combatant and other fast ships screened by radar equipped escorts.

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

4. The Force Commander congratulates the Commanding Officer, officers, and Crew for inflicting the following damage on the enemy and recites that lack of sufficient conclusive evidence precludes assessing as "Sunk" vessels attacked with torpedoes:

SUNK

*1 TACL (U.S.S. TACL) - 32 tons (1st gun attack).
*1 TACL - 50 tons (2nd gun attack).

Total 32 tons.

— page 120 —
224-71/16-3
Serial: 0518
June 2, 1944.

U.S.S. TACOMA (SS259) - Fourth War Patrol - Comment on:

DISTRIBUTION:
Cominch (3) - (Direct)
Vice Cpnav (2) - (Direct)
Vice Cpnav vp-23c (1)
Com1crt1t (1)
Com2nd1t (1)
Com3rd1t (1)
Com7th1t (2)
Comsubs1st1t (4)
Comsubs2nd1t (4)
CIR-71 (4)
CIR-72 (2)
CS-12 (1)
CS-16 (1)
DivComs 1on-12 (1)
DivComs 2on-16 (1)
S/M School K.L. Conn. (2)
Each 5/ii "a. (1) - [N/A] To Be Typed To SEA - BURI

6 02987

-3-

— page 121 —
17 JUN 1944
Serial: 01577
C-0-L-P-I-D-P-E-T-L-R-I
MISDED SIGNATURE TO
T.S.O. JAPO conf. 1hr.
Serial 06-44, dated
10 May 1944. Report
of Fourth War Patrol.

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

Subject: U.S.S. JAPO (SS295) - Fourth War Patrol.

1. Forwarded.

R. H. HUNSEN,
by direction.

— page 122 —
18 March 1946
OFFICE OF THE CHIEF OF NAVAL OPERATIONS
WASHINGTON
REASSESSMENT OF DAMAGE BY SUBMARINES

Reference: (a) ComSubPac 1tr. FP12-10/111(1) of 21 February 1946.

USS JACK (SS259) 4th War Patrol
Date of Attack: 26 April 1944

In an attack on a large convoy (7 AK's, 8 escorts) JACK fired a total of 19 torpedoes for 12 hits. In the patrol report credit assessment she was credited with 82 tons SUNK and 5 AK's damaged for 20000 tons. DNI and Japanese verification agree that the YOSHIDA MARU No. 1 of 5,425 tons was sunk as a result of JACK's attack. Accordingly assessment should be changed to 5,507 tons sunk and 16,000 tons damaged. Commanding Officer, Capt. T.M. Dykers, U. S. Navy.

Copy to:
ComSubPac
SubSchool New London
CDR 88-29
Op-23E
Op-41403

— page 123 —
83259/.9
Serial 09-44.

DECLASSIFIED - NODD DIR. 5200.8
of 22 Sep 58
BY: [Signature]
DATE: 1/29/21

DECLASSIFIED: I.-I

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

Subject: U.S.S. J.C., Report of War Patrol number five.

Enclosure: (1) Subject Report.
(B) Track Chart (O.T.F. 71 only)

1. Enclosure (1) covers the fifth war patrol of this vessel conducted off the West Coast of U.S. in the I.M.I. area during the period June 4, 1944 to July 14, 1944 is forwarded herewith.

[Signature]
...B. H. H.

— page 124 —
1944, to July 14, 1944 in the South China Sea. Operation Order # 70-44.

PROLOGUE

(A) Arrived Fremantle, W.A. from fourth war patrol on May 10, 1944. Refit of normal duration conducted by Relief Crew of submarine division. 122 and USS GRIFFIN. Drydocked, bottom cleaned and painted. Replaced starboard propeller. Magnetic signature obtained, not deepened or wiped. Sound tested both underway and at anchor submerged. New type oil wiper rings and expanders installed on four main engines. May 25, 1944 Lieutenant Commander Arthur E. Krapf, USN, relieved Commander Thomas J. Myers, USN, as Commanding Officer. Had training period of five days and four nights, fired three exercise torpedoes. Training supervised by Commander Submarine Division 122. Lieutenant (jg) J.T. O'Brien, USN, and Ensign J.L. Tucker, USN detached. Lieutenant H... Spohr, USN, lieutenant (jg) F.L. Dewar, USN and Ensign J.F. Street, USN, reported on board. Ready for sea June 4, 1944.

(B) All times
   - 1300
   - June 4 (1st. Day of Patrol)
     - Underway from Fremantle, W.A. in company with USS PADDLE. Held day and night convoy exercise with USS CLATTERBURG. RN COVERT: ES DUBBO AND HORSHA until 2200. Underway independently in exercise area ABLE for remainder of night.

   - June 5(2)
     - 0800
     - Returned to Fremantle Harbor to await completion of emergency repairs to USS PADDLE.

   - 1315
     - Underway from Fremantle, W.A. in company with USS PADDLE. Held day and night convoy exercise with USS CHATTERBURG. USS ISABEL and ANCHOR PUDDLE until 2300, then proceeded up the bombing restriction lane with USS PADDLE enroute EXECUTIVE GULF.

   - June 3(3d)
     - 6 & 7
     - Held training dives, day and night torpedo approaches and radar tracking drills. JACK and PADDLE alternating as targets.

   - June 8(5)
     - 0100
     - Departed company with PADDLE and proceeded. Travelling in company this was his best very beneficial not only to the approach and tracking parties but also to the lookouts and quartermasters.

— page 127 —
1915
Report of fifth war patrol, USS JACL. Period from June 5, 1944 to July 14, 1944 in the South China Sea. Operation Order #70-44.

June 13 (cont'd)
1915
Saw three green flares bearing 090°T., distance about 12,000 yards which burst into high intensity illuminating flares of about 5 second duration. No indications on radar. During period of illumination saw small dark object on horizon, tentatively identified as patrol craft.

2220
Entered JAV. SEA.

June 14(11)(1200 CSIT. Lat. 05-43.05, Long. 114-16.7M).

0605
Submerged for all day patrol south of CT. ASLEE 30 ISLAD

1636
Surfaced.

2313
Radar contact dead ahead, 2900 yards. Picked up small patrol craft by sight, 90° starboard side on the bow. Turned south and evaded on four main engines. (Ship contact #5).

2347
Radar contact 22 degrees on starboard bow, distance 3200 yards, identified as patrol craft. For navigational reasons changed course to 330°T. Putting target on port bow with the intention of crossing his stern and avoiding to northward. (Ship contact #6).

2353
Radar contact 25 degrees on starboard bow, distance 3400 yards, identified as patrol craft. (Ship contact #7). Changed course 200° to the left and split the difference between the above two craft which were on a parallel course about 5,000 yards apart.

June 15(12)(1200 PCSIT. Lat. 5-19.75, Long. 111-31.0E).

0120
3R Radar contact 1290 relative, distance 7200 yards. Received only a short indication after which the echo faded out. 3R radar interference on that bearing

— page 128 —
533 JAC: (33259)

Report of fifth war patrol, USS JAC. Period from June 5, 1944 to July 16, 1944 in the South China Sea. Operation Order #7C-44.

June 16(13)(1200 POSIT. Lat. 3-51.45, Long. 109-35.6E)

0624: Submerged for all day patrol 20 miles due east of DISCOVERY BAY Bunk. Patrol led on southerly course across BATAVIA-SALINOPAPA route.

1912: Surfaced. Commenced passage of LARITA STRAT, full on three main engines, charging on one.

2300: 3J Radar out of commission.

2324: 3J Radar back in commission.

June 17(14)(1200 POSIT. Lat. 0-5.3, Long. 104-4.3).

0120: Completed battery charge. Handed full on main engines.

0355: Completed passage LARITA STRAT, passing 4 miles north of CHATNIC RIF.

0620: Submerged.

1912: Surfaced.

2030: Received instructions changing patrol area.

June 18(15)(1200 POSIT. Lat. 3-16.0, Long. 108-30.0).

0620: Trim dive.

0650: Surfaced.

0759: Submerged on false SD contact. (See SD Radar).

0815: Surfaced.

0900: Sighted sail boat bearing 3370T, distance 8,000 yds. -voided on surface. (Ship contact #).

0930: In view of new information decided to investigate. (Ship contact #).

1137: Sighted sail boat bearing 0970T, distance 9,000 yards. -voided on surface. (Ship contact #).

-5-

— page 130 —
U35 J.CI: (3259)
:  CAPT. FIDELITAT
:  Report of fifth war patrol, U35 J.CI. Period from June 5, 1944
:  to July 15, 1944 in the South China Sea. Operation Order #70-44.

:  June 19
:  (cont'd)
:  1226
:  Changed course to 290°T to open out, surface and end
:  around with the hope that way would pass to the west of
:  the mine field and thereby give us a chance at them.
:  1345
:  Surfaced and started tracking drill. Changed course
:  towards as necessary to get ahead of them and to hold
:  them in sight which was helped considerably by their
:  smoking.
:  1700
:  Definitely determined that this convoy had not only passed
:  inside of the mine field but was also going inside of
:  J.P.P.TCHES.
:  They now had sheltered passage up to B.L.B.C STRAT. Set
:  course 0000T.

:  June 20(17)(1200 POSIT. Lat. 7-36.1N, Long. 115-59.0E).
:  0540
:  Submerged. Stern planes again jammed. Against the stop
:  this time. Took 250 angle, recovered at 150 ft. (Plenty
:  of water, 1000 fathoms). It begins to look as if this
:  stern plane jamming is more personal than anything else.
:  Same men has been on the stern planes on all three
:  occasions. Last patrol when the stern plane caught was
:  not operating properly and the planes failed frequently
:  this time was a bow planes. Beliovo he imagines many
:  of the casualties or causes than by his excitement.
:  Relieved him as stern planes. Weather is overcast and
:  we are within 120 miles of air strip on P.L.M.T.
:  1200
:  Weather cleared somewhat so surfaced and continued passage
:  up P.L.M.T. STRAT.
:  June 21(16)(1200 POSIT. Lat. 11-14.5N, Long. 118-26E).
:  0200
:  Vacuum started dropping in main gyro compass. Started
:  auxiliary compass.
:  0525
:  Submerged. Weather overcast. Eighty miles from P.L.M.T.
:  air field.
:  1200
:  Main gyro compass back in commission.
:  1540
:  Surfaced. Set course for C.P.E C.L.VITE.
:  2025
:  Received instructions to patrol whole of J.M.L. area.

-7-

— page 132 —
U.S.S. J.CI. (53259)
CONFIDENTIAL

Report of fifth war patrol, USS J.CI. Period from June 5, 1944 to July 16, 1944 in the South China Sea. Operated in order #70-44.

June 24 (cont'd)
1630
Lost sight of convoy smoke bearing about 3300T, distance about 25 miles. Convoy tracked at eight knots on course 33°0'T.

1858
Surfaced and set course 330°T to overtake convoy. Plotted position circles of convoy and estimated that course 330°T would pass through center of possible convoy position and that we should pass them at about 2300. Head full on three main engines, charge engine on one.

2330
Changed course to 060°T to close coast line and cover possible convoy courses closer to the coast.

June 25(22)(1200 POST). Lt. 16-23.2, Long. 119-152.E).

0022
Searching for land echoes on 3T picked up echoes bearing 085°T, distance 13,000 yards. Changed course to 3°50'T. Lowered one sound head and heard pinging in general direction of 3T echos.

0038
General quarters, all ahead full to work ahead of convoy. The night was black and the targets were against the background of high shore line. After running up the length of the convoy and gaining a position about 12,000 yards, on the port bow of the leading ships of the convoy the following positive and negative information was available:
(a) convoy was zig-zagging between 330°T and 030°T.
(b) convoy speed 9½ knots.
(c) convoy consisted of at least 12 ships in two major groups all in column.
(d) number and disposition of escorts was uncertain, at least the escort was on port beam of forward group and one on port beam. At least five escorts estimated that the convoy had at least five escorts all on the port side of the convoy. It is the first improbable that there were any escorts on the inshore side of the convoy.
(e) from size of radar echoes it was determined that the largest ship in the convoy a proper to be the next to the last ship in the second group.
(f) did navigational lights appeared at irregular intervals along the coast south of N.C. B.Y.

-9-

— page 134 —
1944, USS J.C. (SS-259) to July 15, 1944, in the South China Sea, Operation Order #70-44.

June 25 (cont'd)
1. Large column of yellow flame shot up from the tanker and illuminated the surrounding scenery. The J.C. was smoking heavily and soon burst into flames. Two intense seaports were now noted about 1500 yards apart. The had swung around for a short while. In the light of the fires it was seen that there was another target astern of the J.C. at which we had fired, but the picture also showed that he had started to port at a range of 3500 yards. This third J.C. continued on around to a reverse course, and it appeared to be too late for a stern shot without a new set-up but he was sure, putting himself in a position to get shot at as soon as we could get some information. In meantime started reloaded forward. One small escort joined the third J.C. in his light from the scene and in an open oposite direction to the rest of the convoy. Depth charges from the head of the column.

0332
Redar picked up an escort bearing 1500 relative, distance 4600 yards, speed 16, angle on bow zero. Could not see him from bridge but could make out a dense cloud of smoke in that direction. All ahead flank, changed course to put him astern. The range opened slowly, about 50 yards every century, and his smoke and speed increased until he was nearing about 17 and three quarters knots. This fellow must have had radar because he came all the way from the head of the column of ships to give us a zero angle on the bow, whereas there were two or three escorts ranging around the fires who were much closer to us. At end of a little time when the range had opened to about 5300 yards, changed course 10 to the right to see if he really had the scent. So far so good, he did not change with us and the angle on his bow started to open out so changed another ten degrees. About this time he started to drop depth charges. From his actions it appeared that he had radar and was getting an indication to about 4800-5000 yards, at this range he lost the echo so assumed that we had submerged. When he reached this station, position of our submergence he lost go with about six depth charges. After dropping he slowed down and turned back towards the convoy now what have we got? He alerted co-roy, a radar equipped escort between us and the single J.C. that had reversed course and coming with light about 30 minutes away. Time did not permit an undetected one-around under cover of darkness. Two large air-bases within 50 miles was sure to make this area very active at cybercak.

-11-

— page 136 —
1944
USS J.C. (S 259)

Report of fifth war patrol, USS J.C. (S 259) to July 15, 1944 in the South China Sea, Corvette #70-44.

June 27(24)(1200 POST, Lat. 16-56.2n, Long. 119-41.2E)

0452 Submerged on course 270°T.

1910 Surfaced.

June 28(25)(1200 POST, Lat. 15-30.5n, Long. 116-27.2E)

0512 Submerged.

0615 Surfaced.

1810 Submerged during evening twilight.

1906 Surfaced. Headed for night patrol off coast at P.L.U.G PT.

2017 Coruscant patrol northwest ab.ut 9 miles off the reefs that line the coast at this point. First quarter moon.

2124 Sighted patrol craft on port bow, distance 8000 yards which placed us between him and the coast. Put him astern and went ahead full on four man engines to work around him to seaward. (Ship contact #13). In working around him picked up a second patrol craft that was ahead and seaward of the first. It became necessary to run between those two fellows and in so doing showed a large silouette to the first patrol craft and at a range of about 5,000 yards at Patrol craft #1 turned towards. Censored course to pl.ce him astern. Range exposed to 6,000 yards but his speed increased all the time up to about 16 knots. No tried to change course to throw him off but he changed with us. Do not believe he had radar but do believe that he could see our smoke. (engines are starting to smoke again) in the moonlight as we were down from him.

...it is fringe of 700 yards so turned a search light directly on us, then swept around with it. Also at this time he opened fire with what looked like a 3 or 4 inch gun. His shooting was erratic some shots being fired at what appeared to be at least 90 degrees from our bearing. At the 15 rounds fired only 5 were close enough in our direction to hear them explode. His powder was not flashless. We could see a large yellow flash each time he fired. The second patrol craft was until this time on our port beam, distance 6,000 yards parallel course. For some reason he reversed course when the shooting started and ran back towards the first craft.

-13-

— page 137 —
1. USS J.G. (35259)
: 2. Report of fifth war patrol, USS J.G. Patrol from June 5, 1944 to July 14, 1944 in the South China Sea. Operated #70-44.
: 3. June 28 (cont'd)
: 4. 2336 Could no longer see or hear either of the patrol craft so set course 27°CT and opened out from the coast. I think this was a routine night patrol and that there was not a convoy in the vicinity.
: 5. June 29(26)(1200 POST. Lat. 14-50N, Long. 118-23.2E)
: 6. 0500 Submerged.
: 7. 1019 Surfaced.
: 8. 1348 Sighted smoke bearing 206°T. (Ship contact #14).
: 9. 1352 Sighted plane above convoy. (.aircraft contact #5).
: 10. 1355 Submerged. .Maintained sight contact by periscope with this convoy. Closest range about 20,000 yards. Yes unable to determine number, type or disposition of ships, but did determine its base course as 096°T (headed for PHIL. and spocd at 9 knots.
: 11. 1907 Surfaced with smoke of convoy still in sight ahead. Coast onced and around and await monster at 0030. Obtained some valuable tracking experience and information.
: 12. June 30(27)(1200 POST. Lat. 14-10.8N, Long. 119-01.1E).
: 13. 0100 Determined that this convoy is in three groups with three ships on an 8°A rahate line of bearing in each group.
: 14. 0130 Started in for an attack on the leading group. The night was very dark with low overhanging rain clouds. During a lightning flash, one of the targets was identified as a medium.
: 15. At a range of 4000 yards on the target discovered an escort 20 degrees on our starboard bow, range 1500 yards, between us and the target. Since it would be necessary to use speed to close the range and maintain bearing it was possible that this escort could see our wake which was very pronounced in this black night. Bridge force could distinguish the glow from the wake of the escorts long before they could see them.

-1-

— page 141 —
35, 44
HASST. 1st. SAVOS
(ATTACKS IN R.I.)

F. INSULATES POSITION
OF ALL SHIPS AT
TIME OF FIRING FIRST TUNE
~SCALE 1"=1000 YDS ~

SECOND PHASE

F
Y
X
C
013
5 10

F
Y
X
C
013
5

— page 142 —
30(27)
(cant'd)
1907
Surfaced and set course for APO EST P.53.

2000
...attempted to send despatches, but with no success.

July 1(26)(1200 POST, 1st. 13-20, Long. 120-11,1E).
0459
Submerged north of APO EST P.53.
1301
Sighted smoke bearing 260FT. (Ship contact #15).
Sighted plane flying above convoy. (.aircraft contact #6)
Then sighted plane appeared to be only about 5 miles
away.

1305
Down to 100 feet.

1354
Picked up echo ranging on a coast bearing of 2700.
Went to 250 feet and spot the rest of the afternoon
trying to keep clear of this convoy. This would
happen with no torpedoes aboard.

1900
Surfaced and set course for APO WEST P.35.

2110
Sighted patrol boat distance about 9,000 yards. (Bright
second quarter moon). (Ship contact #16). He appeared to
be hanging around APO ISLID. Chances course to open
out as far as possible to the west from him and still
not run on the rocks on the western side of APO WEST P.

2214
Cleared APO WEST P.35 and the patrol craft.

July 2(29)(1200 POST, 1st. 11-06, Long. 121-57,4E)

0507
Submerged off West coast of P.L.Y.

1553
Surfaced. Set course for SIBUTU P.35.

2000
Sent message.

July 3(30)(1200 POST, 1st. 08-3,7A, Long. 120-46,4E).

0517
Submerged.

0640
Sighted S.L.Y bomber passing ahead from port to starboard, distance 8 miles. (.aircraft contact #7).

0824
Surfaced.

1113
Submerged on sight plane contact on starboard beam,
distance 12 miles. S.L.Y bomber. (.aircraft contact #6)

— page 146 —
259

USS JULY (C-259)

Report of fifth war patrol, US J.C. Period from June 5, 1944 to July 14, 1944 in the South China Sea, Operation: Cracker #70-44.

(C)
Normal, no additional contacts.

(D)
TIDL J.FORD J.T.

At a distance of 24 miles south of the entrance to I.C.B.O. STRAIT the prevailing southern sea through the Strait is at times still offtocive. Although we at 00400T at 2 knots subcargoed all day, we ended up about 10 miles south of our starting position.

In passing through I.C.B.O. STRAIT he made north at 2023 on June 12, 1944 experienced a strange southerly set of about 5 knots.

During a submerged southward transit of I.C.B.O. STRAIT on July 9, 1944 a southerly set of from 4 to 5 knots was experienced from 0500 until transit was completed at 1500.

(E)
INVIGILATION J.D5

It was noted during the attack made at 0330 June 25th on a north bound convoy which left the coast of IUDZ. that this while lights appeared irregularly on the cliffs just south of G.C.B.Y. They were no doubt used as navigational aids to prevent the convoy from grounding while running so close to the coast.

-23-

— page 150 —
1944, in the South China Sea, Operation "P-40-44."

| Date | Time (Zone) | 3 | 9 | 10 | 11 |
|------||----|----|----|----|
|      |

— page 153 —
1. USS J.G. TROYNE (ATLANTIC) 3, ATLANTIC 6, 5
TIE 0211(E), LATE - June 30, 1944. Int. 14-25., Long. 149-47E.

TARGET DET: - D.C. GUN F.I.F.I.C.TED

...attack #3 was a storm tube attack which followed in exactly after attack #2. Four storm tubes were fired. This was...due on the nearest ship in range of the three ships tracked. The first ships having been fired on in attack #2. This attack was made on radar range and bearings without the targets being in sight. It ran the bridge.

Ship's Sunk: none.

Ship's Demaged or Probably sunk: none.

Damage Determined By:
Tied and observed explosive.

Target Draft: 1.5', Course 113°T, Speed 9 kts. Range - 2100 Yds.

Speed 14 kts., Course 020°T, Depth - Surface. Angle - 0

FIRE G.T.H.L. AD TROYNE D.T.

some comments as for attack #2.

Tubes Run Track Gyro
10-9-6-7 2250 Yds. 1092 165

-30-

— page 155 —
1944 to July 14, 1944 in the South China Sea. Operated from June 5, 1944 to July 14, 1944 in the South China Sea.

— page 167 —
35
USS J.CK (33259)
CRAFT: T.L.
REPORT OF: FIFTH WAR PATROL, USS J.CK. PERIOD FROM JUNE 5, 1944 TO JULY 14, 1944 IN THE SOUTH CHINA SEA. OPERATION ORDER #70-44.

R.D.R (COATD)

The [C]eremonious efficiency of the [D] is attributed to the attempt to make it operate at its highest frequency. The [C]able [C]eramics in order to force the [C]nternet into resonance.

3
Operation of the [G] while [C]atisfactory did not come up to the standards of the past two patrols. This is attributed to a [C]hance of manpower during the last [C]raft, followed by [C]asable [C]onstruct or [C]ercept over [C]rvicius [C]operation. [C]and [C]er [C]arts were still soon at [C]nces of 80,000 [C]yrs or more but [C]nces on ships were reduced from a [C]ontext [C]ence of 26,000 to [C]ut 19,000 yards.

3t. [C]lose [C]Fire was [C]bserved at [C]t. 17-35.88, [C]ong. 120-08 [C]on the tips of the [C]3R reflector while [C]losed for [C]ut to [C]hree [C]urs.

Both [C]onding [C]dges of the [C]eraboloid [C]lowed with a [C]lush light resembling a [C]oon sign. The [C]hings of the [C]D also [C]lowed but [C]lass noticeably.

In [C]cordance with [C]CJUBE.C Special [C]rter [C]F12-10/367/(18) serial [C]006 of 29 - [C]rill [C]1944 the following report is made on radar interference.

| Date | Time | Range |
|------|-------||
| 0120 | 2218 | 1957 |
| 0120 |

— page 170 —
1944
USS J.L.GK. (35259)
CONFIDENTIAL

Report of fifth war patrol, USS J.L.GK. Period from June 5, 1944 to July 14, 1944 in the South China Sea. Operation Cracker #70-44.

(R)    MILIS STORMED--RUSUL USED
Base to area    3464 miles
In area    2627 miles
Area to Frontal    3269 miles
(T)    DURATION
Days cruise to area    14
Days in area    13
Days cruise to Frontal    13
Days submerged    20
(T)    FACTORS OF EXHAUSTED RESIDUALS
Torpedos    0

— page 172 —
7/1/44
Serial 0125
Crew of Fleet Post Office,
Se: Francisco, California,
20 July 1944.

Subject: U.S.S. JACK (SS259) - Report of Fifth War Patrol.

(a) Attack No. 3: A stern tube attack (radar ranges and bearings) following immediately on Attack No. 2. Two hits were observed from a four torpedo salvo fired from 2100 yards with a mean track of 109°.

(d) Attack No. 4: JACK avoided enemy surface and torpedoes and closed up on a straggler from convoy which had scattered after attacks No. 2 and 3. Two hits were obtained in a large freighter from four torpedoes fired from 1950 yards on an average (10° track, using radar range on TT bearing).

(e) Attack No. 5: Radar - TNT approach on target following an after attack of Attack No. 4. The four last torpedoes (hark 16) were fired from a range of 2500 yards and a mean track of 660° to obtain three hits.

4. Attention of the technical officers on the Task Group and Task Force Staffs and the officers of the Nucan in invited to the remarks of the Commanding Officer in the Radio and Radar sections of the report.

5. A study has been made and an improvement has been made in the ventilation for forward in GURKIND and NUSKALUMBE. The installation of similar auxiliary cooler coils and booster blowers will be accomplished in the remaining vessels of this squadron as rapidly as the material can be procured.

6. The health, morale and material condition of the ship are excellent and the Squadron Commander congratulates the Commanding Officer, Officers and men for inflicting severe damage on the enemy despite strong anti-submarine opposition.

J.B. GRIGGS.

— page 173 —
1. The Commander Submarines, SEVENTH FLIER.
From: The Commander in Chief, U.S. SUBMARINES.
To: The Commander, SEVENTH FLIER.
Via: The Commander, SEVENTH FLIER.

Subject: U.S.S. "Foster" - Report of Patrol War
Pilot - Commander.

1. The Fifth Year Patrol of the USS "Foster" was conducted off the West Coast of the United States on 1st May, 1944. It was the first of the Commander's patrols in the Pacific.

2. The aggressive nature of the Commander's patrols was evident throughout this period. All reports were made at night on the surface again, usually close to or on the surface. Only one attack could be made on the first enemy, and it resulted in the sinking of one large target and the loss of one submarine. The second convoy was persistently attacked over a period of three hours until the remaining eighteen torpedoes were expended. Two unidentified ships were sunk on the surface during this period, a well trained and efficient fire control patrol was initiated by the number of hits obtained and by the speed with which such ships were changed in attacks on multiple targets.

3. The comprehensive remarks of the Commander's Officer in the Radio and Radar sections of this report are of special interest. The following have been compiled in accordance with his suggestions:

   (a) A problem type became receiving antennas has been installed at USRAD PERTH in an effort to minimize the effects of enemy landing and to improve the general reception on the submarine frequencies.

   (b) The audio oscillator previously installed in the TEL transmitter to provide a tone modulated signal is being removed.

   (c) Crystals which will reconstitute in the vicinity of 115 megacycles are being installed in the VHF equipment in order to increase its efficiency when used with the SL radar antenna. If this measure does not provide the required improvement, the PEARL HARBOR type whip antenna will be installed.

— page 175 —
17 AUG 1944

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

THIRD ENDORSEMENT TO USS JACK Conf. ltr. Al6-3 Serial 09 of 14 July 1944. Report of Fifth War Patrol.

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

Subject: U.S.S. JACK (SS259) - Report of Fifth War Patrol.

1. Forwarded.

2. Commander Seventh Fleet congratulates the Commanding Officer, Officers, and Men of the U.S.S. JACK upon the successful completion of a War Patrol during which 25,000 tons of enemy shipping were sunk and 12,000 tons were damaged. The aggressiveness of the Commanding Officer, and the excellent training of the Officers and Crew are reflected in the results achieved.

Copy to:
ComSubs7th
ComSubRon-12
CO U.S.S. JACK

— page 177 —
1934-1944
Report of sixth war patrol, U.S.S. J.J.H. Period from August 6, 1944 to September 24, 1944 in Western CHICAGO S.H. Operation Order 103-44.

PRODUCT:
A) ...drived Fremantle, ...from iifth war patrol on July 14, 1944. Refit of normal duration conducted by Relief Crew of Submarine Division 122 and U.S.S. CHIPH. Drydocked, bottom cleaned and painted. Synthetic signature obtained, not degenerated or wiped. Source tested both underway and submerged. Relaced COO radar detector with Model APK. Had training period of three days and two nights. Fired two exercises torpedoes. Conducted convoy exercise using A.M. DIALIDE as target and R.C.MITTS DUSO and RCS-7, U.S.S. U.S.S. COLDST CHITI as screens. Training supervised by Commander Submarines Division 122, Lieutenant, H. H. PICK, USNR, and Ensign E. H. ACHER, USNR, detached. Lieutenant (jf) J. T. O'BRIEN, USN and Ensign B. Z. H. MCRAE, USN reported on board for duty. Ready for sea August 6, 1944.

(B) HAZARDOUS MATERIALS:
Fully loaded

Follow-up times:
Hypo

August 6 (let day of patrol)
1000 Lieut.(jf) R. F. CHITZ, USNR, reported aboard for temporary duty.

1300 Unclear from Fremantle, ...in case of U.S.S. RADII. Held day and night torpedo exercises with USS CHICAGO as target until 2125, then proceeded up the towing restricted lane with USS RADII in course CHITI.

August 7 & 8 (2 & 3)
Conducted radar keying tests with RADII. [see Radar section]. Held training class, day and night torpedo approaches and radar tracking drills. J.A. and RADII. alternating as targets. Each submarine made three day approaches and two night approaches. Travelling in company with very beneficial.

August 9 (4)
0736 Entered CHICAGO CHIP.

0805 Entered dense fog. Visibility 200 yards.

0955 Recorded port side to fuel door & FICHTING CHIP. For lifted. Completed cofueling.

1015 RADII moored alongside to torpedo.

1600 Lieut.(jf) R. F. CHITZ, USNR, detached, temporary duty completed.

— page 178 —
3315 Completed defueling. Delivered 50,000 gallons of fuel to the barge, 2,200 gallons of fresh water to the REDFLY and one gallon of ice cream to the section base.

: 635 Underway proceeding out of ENCHANT GULF.

: 850 Fired 12 rounds of 3-inch ammunition and 200 rounds of 20mm at wreck off NORTHWEST C.P., for training.

: 1047 Made trim and deep dive.

: 1205 Surfaced.

: 1702 Submerged for training.

: 1722 Surfaced.

: 1810 Sighted submarine on horizon distance 11,000 yards bearing 054° T. Warmed. 3J radar encountered 3J interference from a rotating antenna. Trained our 3J on him and called by radar. This is the first time out of many attempts that communication could be established by radar with a friendly submarine not previously instructed to man keying circuit. Exchanged calls with RADIJN by radar.

: 1946 Conducted practice night radar approach with RADIJN.

: 2057 Secured from night approach exercise.

August 11 (6) (1200 FOST. Let. 18-51.53, Long. 114-52.9E)

: 3627 Submerged for trim

: 0722 Surfaced.

: 102 Submerged for training.

: 1113 Surfaced.

: 1127 Sighted and exchanged calls with south bound friendly submarine.

: 1443 Submerged for training.

: 1458 Surfaced.

: 1650 Submerged for training.

: 1732 Surfaced.

-2-

— page 179 —
0608 Submerged for trim.
: 0650 Surfaced.
: 1047 Submerged for training.
: 1108 Made battle surface. Fired 2 rounds from 3-inch.
: 1654 Submerged for training.
: 1726 Surfaced.
: 2345 Sent JACK #1.
: 0537 Submerged for trim.
: 0631 Surfaced.
: 0930 Submerged for training.
: 0950 Surfaced.
: 1038 Submerged for training.
: 1053 Battle Surface. Fired 2 rounds from 3-inch and 1 pan from each 20mm.
: 1635 Submerged for training.
: 0706 Surfaced.
: 1827 Encountered SJ radar interference bearing 2900 T. Did not look like friendly submarines. Attempted to call by radar. No answer. Radar echoes on various bearings at ranges from 4,000 to 400 yards. (+

— page 180 —
1113(I) Submerged for training.
: 1125(I) Surfaced.
: 1612(I) Submerged for training.
: 650(I) Surfaced.
: 2200(I) Sent TACK #2.
: August 15 (10) (1200 POSIT. at Darwin)
: 0506(I) Exchanged calls with escort.
: 0700(I) Formed column astern of escort with USS STINCRAY and proceeded into Darwin.
: 0915(I) Coordinating Officer USS CUCALI came aboard.
: 1000(I) Loored port side to USS STINCRAY at TIDBURNA, AUSTRALIA. Commenced fueling. Discovered burned spot in mine insulation between two adjacent commutator bars #3 main generator. Spot was near outboard end of commutator, not in brush contact area. Cleaned out burned mice and filled in with glyphtal.
: 2195(I) Underway after receiving 87,000 gallons fuel oil, 1,750 gallons lube oil and 8,000 gallons fresh water. With the assistance of the Section Base leader Officer replaced modulistion network and antenna mast slip rings in 3J. This work delayed us somewhat but was worth the time spent. Both the Commanding Officer of the Section Base and the Commanding Officer USS CUCALI did everything possible to assist us and to make our stay pleasant.
: 2356(I) Cleared DARWIN sweep channel and set course for east of TIDOR via bombing restriction lane.

August 16 (11) (1200 POSIT. Lat. 10-52.03, Long. 126-45.0E)
: 0613(I) Submerged for trim.
: 0646(I) Surfaced.
: 0708(I) Submerged on SD contact, 11 miles. Plane not sighted. Plane contact #1.
: 0720(I) Surfaced.

— page 181 —
0.46(I) 3D contact 18 miles. Closed to 15, then opened and lost at 20 miles. Did not dive. Hot sighted from bridge. Plane contact #2.

1223(I) Submerged on false SD contact. Two miles.

1237(I) Surfaced.

2305(I) Commenced passage of Barrier between TIGER end LETI Islands.

August 17 (12)(1200 POSIT. Lat. 6-25.49, Long. 125-57.5E)

0217(I) Radar contact 3520 relative, 8,000 yards. Contact turned away. Identified as southbound friendly submarine.

0330(I) Completed passage of Barrier.

0608(I) Submerged for trim.

0808(I) Surfaced.

1300(I) Set clocks back to -8 zone time (HOT).

Following times are -8 Zone (HOT)

August 18 (13)(1200 POSIT. Lat. 1-52S, Long. 126-41 E)

0510 Submerged south of LIFUZICLA Island.

819 Surfaced.

2345 Strobe signal on APR at 175 secs. Signal would remain on for about 1 minute and off for 2 minutes.

2346 Manned SD. No indications. Keyed SD at same time as APR signal was received to prevent his DF'ing of SD.

August 19 (14)(1200 POSIT. Lat. 1-13N, Long. 125-44.2E)

0001 APR signal stronger.

0003 Changed course 700 left.

0010 SD contact 10 miles. Submerged. Plane contact #3.

0105 Surfaced. All clear.

— page 183 —
2107
AUGUST 21 (CONT'D)
Just about in firing position, when at a range of 3,600 yards
he turned away giving an impossible shot. He increased the
range to 5,000 yards at which time he reversed course to 105
T., steady and increased speed to 16 knots. Passed at 4,100
yards on this new course. With the increase in speed sound
indicated target to have high speed, light screws. This
completed commending officer's tentative identification as
small patrol or SC boat. He must have seen us at dusk when
we were silhouetted in setting sun and he was in cloud bank
to the east. Do not believe he had radar contact on us on
the surface or at radar depth.

2107 SURFACES.
AUGUST 22 (17/7/1900 FOST. Lat. 3-12-5N, Long. 122-14.5E)
0518 SUBMERGED for trim. Weather overcast.
1117 SURFACES. Weather clearing.
AUGUST 23 (15/12/1900 FOST. Lat. 1-31.4N, Long. 124-17.5E)
0510 SUBMERGED for all day patrol off HAVAD BAY.
1504 Flicked up a pulsed signal on both JP and JK sound gear.
Sounded like key click transient of fetometer. No prolonged
signal appeared with the click. Repetition rate varied from
1 every 3 seconds to 1 every second. Pulse length 1/4 second
Bearings broad and extended across whole of mouth of HAVAD
BAY.
1833 SURFACES. Set course to patrol on a westerly course off
rocks along CHILDES COAST.
AUGUST 24 (19)(1200 FOST. Lat. 1-26.0N, Long. 123-03.3E)
0507 Submerged for trim and patrol off CHILDES COAST. Weather
Cloudy.
1620 SURFACES.
AUGUST 25(20)(1200 FOST. Lat 3-11.4N, Long. 121-34.5E)
0528 Submerged for trim. Sky completely overcast.
1132 Surfaced weather clearing.

— page 184 —
1200
Sighted periscope bearing 2000 relative at 1,500 yards.
Placed astern, all ahead flank. This periscope was seen fires
by quartermaster of the watch and then by COD. It is
possible that three engine speed plus constant helm zig-zag
may have flustered his firing plans.

1546
Sighted ship on horizon. Ship contact #4.

1549
Submerged. Changed normal approach course and started
attack.

1559
Identified contact as a coastal freighter of about 150 tons.
Two 100-masts with radio antenna. Diesel propeller. Hot
housing bow spur. Small fore-aft stern with 3 pounder.
Deep water. Fish pilot house, stern and bridge quarters aft.
Depth charge rocket fired at 100 yards.

1607
Battleship (Cum attack #1) commenced firing 3-inch
at 100 yards. Hit with sixth salvo which demolished his
main mast. Formed fire with 200m at 3,000 yards. Closed
range at 2,000 yards. Fired torpedo at 100 yards. 2,000
was damaged. Passed 2,000 yards. Escorted by this time
in the 3-inch was able to pass 2,000 yards on
target. Much still engaged moving out of range in the
turning. Fire had burned through the after part of the
Coral. Torpedo hit stern. Torpedo hit stern. Torpedo hit
bow. Torpedo hit stern. Torpedo hit

— page 185 —
1. USS JACK (SS259)
2. CAPT. TAL
3. August 28 (23) (1200 POSIT. Lat. 2-35.6N, Long. 121-20.6E)
4. 1530 Submerged.
5. 1422 Periscope watch sighted smoke (Ship contact #5). Bearing 0170 T, range 25,000 yards. Changed to normal approach course.
6. 1517 Tracked on base course of 1000 T. Range closed to about 15,000 yards. Could make out mast and stack of a single large freighter.
7. 1558 Target changed base course to 0700 T. Soon lost sight of all but his smoke which was a big help in keeping track of him.
8. 1634 Changed course to his true bearing.
9. 1800 Lost the smoke.
10. 327 Surfaced and set course to 1 ed his last true bearing.
11. 1948 Radar cone at bearing 0630 T., range 25,500 yards. Commenced tracking.
12. 2200 Detected second ship in company with first contact at range of 21,000 yards. Radar contact faint on second ship, strong enough for lobe switching on bigger ship. Awaiting moonest.
13. 2345 Formation had been steering base course 1150 T. Since tracking had started, but now suddenly changed to 0000 T. Speed between 8 and 9 knots.
14. August 29 (24) (1200 POSIT. Lat. 2-04.0N, Long. 121-57.0E)
15. 0015 Formation reversed course in wide circle and commenced using base course 1900 T. Though possibly they were alerted although we had not closed range to less then 17,000 yards.
16. 0040 Moonest. Sky fairly clear. Horizon to east afforded best background for undetected spyroach.
17. 0045 Set bettle stations submerged. 'aiting for increased darkness. On port bow of formation at 20,000 yards. They seem to be gradually changing base course from south to about 1600 T., speed 8-1/2 knots.
18. 0110 Started in for attack. Decided to fire on surface at the large target and to use divided fire and let large escort (second radar echo) have two torpedoes if his size appears to warrant it.

— page 186 —
12125
Sighted target from bridge at 13,000 yards. Light closing range keeping on port bow of formation...showing as little silhouette can bow wake as possible. Radar contact now strong on both AK end near escort. Getting flashes of possible "little" escort on far side.

: 1140
With range on escort 3,000 yards, angle on bow 40 port formation zigged 300 towards, giving us an anxious few minutes. Nothing to do but turn right and show them full silhouette at 2,800 yards. Visibility we were not sighted. This course was 1230 T., a new left entrance for them since their turn to the south at 0015. However, I think it was routine and not caused by an alert, because it

: 1145
Formation zigged right to 1730 T. and afforded us a fairly good shot. Large AK, large escort and small far escort in plain sight from bridge. Loft full rudder to catch gyros and et

: 1147
Commenced firing bow tubes with zero gyros, 110 port track and 3,100 yard run on big AK. Give him first four and then switch to target to near escort. Set up on him gave 20 loft gyros, 130 port track and 2,400 yard run. (Torpedo attack full). All firing was done with continual bearing input from bridge pelorus.

: 1148
Right full rudder all ahead flank. Put stern on escort.

: 1149
Timed explosions for tubes 3 and 4 fired at AK. A hit was observed from the bridge about 1/4 length inside of bow resulting in large explosion and intense high column of flame. Evidently missed escort.

: 0153
Careful check with radar shows no one chasing JACK and TDC shows escort making high speed in opposite direction, so all ahead one third and right to 1800 to check scene of attack carefully with radar. This was 90 degrees and large escort about 650 rel. tive, press night us a nice 180° angle on the bow. Fire on AK is increasing and angling his whole bow. Constant explosions ro occurring on AK with a fourth of July display of shooting stars and rockets 1,000 feet into the air. Until now the crashing section and stern of AK has been dark but at this time a sheet of flame appears horizontal, and from his peep deck indicating the location of another hit brief his beam. Blinking red light appears to right of fire and radar checks this as "little escort". TDC now has big escort at about 17 knots running directly down tracks of the two torpedo fired at him. Echo on the fire is still saturated at 7,001 yards, but hasty plot shows his speed zero.

-17-

— page 187 —
0215 After running south enough to prevent being silhouetted in fire and taking time to check disposition and actions of escorts went all ahead rank and commenced pursuit of large escort who is still running away at high speed. Perhaps he thinks he is chasing instead of running.

: 0225 Escort slows to 11 knots, and slows to full. We pass about 3,600 yards south of fire.

: 0240 Escort recovers course 500 to 0400. Who is causing who? Jack swipes to left and recovers him a steady 1800. He is holding 0400 and not changing us, speed 10-1/2.

: 0250 Too far from track for stern shot so swing around for bow tube shot. Will fire four set at 4 feet. AK burning fiercely to north at 10,000 yards.

: 0304 Commenced firing bow tubes with 4 left gyros, 60 starboard track, run 2,300 yards. (Torpedo attack #2).

: 0306 Timed explosions for last two torpedoes fired. Bridge observes hit just inside of bow of target, as bluish column of water. About three seconds after the last of the two distinctive warhead explosions are of the sharpest and loudest underwater explosions ever experienced was heard in the conning tower. From the bridge the stern of the target was seen to be an enveloped in a mass of smoke and flame. Must have been his mines or depth charges going off. Target moved out of the smoke and from the bridge it could be seen that he was foreshortened by about one quarter of his length, with his stern no longer strewn lined. Flaships soon appeared aft in the hole that at one time was his stern. Inspecting the target?

: 0315 Careful radar check shows both the escort and the AK with full size guns out both ends 2,000 yards. No sign of the "Little fellow". Decided to fire killer shot at escort, but since he has now swung around to present us with a zero angle we must pull out around to the side to get a broader target presentment. Do so and come up at target on course 0200 T. Raised too long to tell the torpedo room to get the tube ready, and the range is getting too close. Finally at

: 0332 Fired tube #3 with gyro 3 right, run 1,100 yards at stopped target. Depth set 6 feet (Torpedo attack #3). Ran erratic to right and ran to the left and ran settled down but too late, missed to left.

— page 190 —
1150 3D contact at 21 miles, 7 mach cut and dispersed from radar (aircraft contact #1).

: 1420 3D contact at 20 miles, closed to 14 miles. Steady air indication at 155 nms. Submerged. (aircraft contact #11)

: 1848 Surface.

: September 11 (37)(1200 POST). Lt. 3-50 m., Long. 120-42.7 E)

: 0527 Submerged.

: 1840 Surface.

: September 12 (38)(1200 POST). Lt. 2-39.7, Long. 120-20.5E)

: 0524 Submerged. Found hole burned in nose between commutator bars of #3 main generator. This hole is smaller but larger than that found in #2 generator. This hole is 112 bars away from the previous one, indicating a connection to the engine structure coil. Churned ice removed and gland installed.

: 1601 Surface.

: September 13 (39)(1200 POST). Lt. 3-54.0 m., Long. 120-34.5E)

: 0530 Submerged.

: 1810 Surface.

: September 14 (40)(1200 POST). Lt. 2-31.5m, Long. 120-24.0E)

: 0531 Submerged.

: 1819 Surface.

: September 15 (41)(1200 POST). Lt. 2-10.5m, Long. 120-22.8E)

: 0529 Submerged.

: 1821 Surface.

: September 16 (42)(1200 POST). Lt. 0-34.0 m, Long. 119-27.0E)

: 0526 Submerged. Mother hole in commutator on #3 main generator. This time it burned under and through binding twine just below the inboard section which was repaired on September 12, 1944.

-15-

— page 191 —
15/03/1944
September 15 (signed)
USS SURFACED

2000
Departed patrol area.
September 17 (signed) 12:00 POST, LT. 2-56.25, Long. 118-32.5M
0523
Submerged off CAPT LILID. -main attempted to repair #3
radar detector.
1445
Sighted by periscope - small lugec distance 8,000 yards.
It pressed enter. (2nd contct #9)
1833
Surfaced.
September 18 (signed) 12:00 POST, LT. 6-30.5, Long. 116-33.5M
3539
Submerged.
0644
Surfaced.
0845
SD contact at 26 miles, closed to 20 miles and the dis-
appeared. (Lirrrefact contct #12).
1117
Sighted north bound friendly submarine. (LT. 6-22.55, Long.
116-42.0M). He submerged about 5 minutes later.
1305
SD contact at 9 miles. Submerged. (Lirrrefact contct #13)
Bow plates failed to rig out. Made repairs at 150 feet.
The tilt control handle is held to the control switch shaft
with a steel allen set screw. Since the shaft is copper
any excess pressure placed on the tilt switch will cause the
set screw to move the handle to the copper shaft allowing
handle to turn without turning shaft. This casuality has oc-
curred before. The handle should be more positively keyed to
the shaft.
1432
Surfaced. Got course for LOBOT SURF. Ran t.st on #3 mail.
Contacted. Contacted INSURT. -in burned through at
point of last attempted report.
2114
Converted #3 and #5 fuel ballast to ballast tank. Since
passage of LOBOT must be made on three engines may have rec
for the extra half knot speed this conversion will give.
2138
Concurred pressure LOBOT SURF.

-16-

— page 192 —
23:30
    JANUARY 18
    (CONT'D)

2230
    "30 contact, 340 relative distance 12,000 yards. Plotted on
    course 1600 T speed 7 knots. Own course 1940 T. .voiced by
    ringing course to port. Minimum range 10,000 yards.
    (Ship contact #10)

2344
    Completed passare I CRUISER STRIKE.

September 19 (45) (1200 POST. Lt. 11-36 3, Long. 115-15 E)

0546
    Submerged.

0726
    Surfaced.

0825
    Sighted north bound friendly submarine (Int. 10-47.63, Long.
    115-24.08)

September 20 (46) (1200 POST. Lt 16-57 2, Long. 114-03 E)

0557
    Submerged.

0610
    Surfaced.

1122
    Sent J.CR #3.

September 21 (47) (1200 POST. Lt. 21-13 3, Long. 111-00.68)

0608
    Submerged.

0627
    Surfaced.

2255
    Sent I.CR #4.

September 22 (48) (1200 POST. Lt. 25-55 3, Long. 111-29 E)

0644
    Submerged.

0703
    Surfaced.

September 23 (49) (1200 POST. Lt. 30-02 3, 113-21 E).

0602
    Submerged.

0619
    Surfaced.

September 24 (50)

0600
    Entered IHM, LIEU H.BACH.

-17-

— page 200 —
35259
CANTON, MI
(21)    TROY, D.T. (GCT)
USS TUG - TORPEDO CO. TUG K.C. 3. 2. TROY L.O. 6. TROY 0332(H)
DATE - AUG 29, 1944, LT. 02-03, L.C. 122-28.9 E

TRUMP D.T.    D.T. 6.

— page 207 —
3/50 --
After firing was completed on the battle surface of August 25, it was noticed that the counterweight was loose. Two of the four holdcleg cowl bolts had jumped out and the other two were so loose as to be almost useless. The bolts had loosened due to shock of gunfire. It is believed that a more reliable type of lock anchor should be used on these bolts and the tightness of them be checked on each raft.

Performance of the gun in all other respects was cautiously satisfactory.

Torpedoes --
All steam torpedoes were tested at 65 feet submerged for 10 minutes with outer doors open, while enroute to area. The following torpedoes flooded under this test:

Reg. #53209 1k. 23
Reg. #49558 1k. 23

Upon returning on board the following torpedoes was found with the vertical rudder rods not hooked up. (Securing pin was installed but rod was hanging down loose)

Reg. #39680 1k. 14-3a

Intention of the erratic torpedo was made in the narrative.

Gun Jitters --
Both the trimmer sight and the spare sight flooded twice during the training period and the best efforts of the tender to repair were of no permanent avail. Armor to 20moth the trimmer's sight flooded and the spare was installed. This also flooded. The original sight was disintegrated on board, dried out, cycled with nitrogen and sealed to the best of our ability. After one failure a combination was found that lasted the petrol and withstood about 150 service rounds of firing.

-1-

— page 213 —
P05-12/1/-3/125-122  SUBMARINE  SQUADRON
Serial 021/7

OCEANIC:
1. The Commander Submarine Squadron TTM.
2. The Commander in Chief, United States Fleet.
3. (1) The Commander in Chief, Atlantic Fleet.
4. (2) The Commander, Western Fleet.

Subclass:
U.S.C. 6399 - (6299) - Escort of Sixth War Patrol.

1. The sixth war patrol of 1943 was conducted in the Central Pacific with a combined a period of 49 days, and of which 20 were in the area.

2. The area was well covered and it is reported that 20 were in the area.

3. The gun attack and decimation of the coastal area of the patrol was very effective, the destruction of 2000 Japanese aircraft in the area being a factor in the destruction of the Japanese air force.

4. The night torpedo attack on an air and a small submarine escort showed that destruction of the enemy's air and submarine was accomplished with a high degree of accuracy. The enemy's air and submarine were not destroyed and the enemy's air and submarine were not destroyed.

5. The enemy's air and submarine were not destroyed and the enemy's

— page 214 —
1955-12-15/AM-5/AM-122 SUBMITTED: 5/12/55
5-12-11 0217
OC: 7-1
USS JACK (SS259) - Report of Sixth Torpedo
subj: 5. U.S.S. JACK (SS259) - Report of Sixth Torpedo.
has failed to reveal the course of the combat in detail. Additional information and a brief history in the Corr. and Living entries are not included, but the sail is now available for interested charts. The frigate is now

— page 215 —
1-2/1/A16-3
Serial: 01141
7 Oct. 1944.
FEB 24-71/A16-3
USS JACK Conf. Ltr.
dated 24 September, 1944.
Report of Sixth War Patrol.

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

Subject: U.S.S. JACK (SS259) - Report of Sixth War Patrol - Comment on.

1. JACK!s Sixth War Patrol was conducted in the
CELEBES SEA.

2. The only worthwhile contact was a large AK
escorted by a NATSUSHIMA type Minelayer and one other small
unidentified escort. The AK and minelayer were sunk in aggressive
night surface attacks. The persistence of the Commanding Officer
in continuing his attacks on the minelayer until it was finally
sunk is noted.

3. The Commanding Officers remarks in Section (M) on
the proper method of using the SJ Radar for identification
purposes should be studied by all submarine Commanding Officers.

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

5. The Force Commander congratulates JACK!s
Commanding Officer, Officers, and Crew, on infiltrating the
following damage on the enemy:

SUNK
1 - AK (Large - SU) 7,500 tons(Attack No. 1)
1 - MC (NATSUSHIMA Class - EU) 500 tons(Attack No. 2, 3, 4.)
1 - MIS (Coastal freighter - EU) 200 tons(Gun Attack No. 1.)

TOTAL 8,200 tons

R. W. CHRISTIE.
10 0235
-1 - ORIGINAL COPY

— page 216 —
12a/pr
7 October 1944.

---

**FE24-71/A16-3**
**UNITED STATES NAVY**
**Serial 01141**

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

**SECOND ENDORSEMENT to:**
USS JACK CONF. LTR.
dated 24 September, 1944.
Report of Sixth War Patrol.

**Subject:**
U.S.S. JACK (SS259) - Report of Sixth War Patrol

---

**DISTRIBUTION:**
|

— page 217 —
16-3(2-3-4/whr)
Serial: 1279
CONFIDENTIAL

From: Commander Seventh Fleet.
To: Commander in Chief, United States Fleet.
Subject: U.S.S. TAC (SS-269) - Report of War Patrol number six.

1. Forwarded.

J. H. LONG
By Direction

— page 218 —
35259/.16
Serial 016-44
C.O. 1st Lt. J.L. DECLASSIFIED

U.S. Dept. of the Navy
Office of the Chief of Naval Operations
Washington, D.C. 20374

Subject: U.S. JLC, Report of Her Patrol Number 27.

Inclosures:
(1) Subject Report.
(2) Track Chart.

1. Inclosure (1), covering the Seventh Patrol of this vessel conducted in the 3rd of July, 1944, is now read herewith.

DECLASSIFIED

DECLASSIFIED

03245

— page 219 —
55259/16
Serial 016-44
C.C. PTU. T.I.
Subject: Report of War Patrol U.S.S. JACK NO. 7.

The JACK returned to Presumptive, V.A., on September 24, 1944, from her sixth war patrol. The report was done by Lt. Cdr. R. G. E. St. John, Lieutenant of 43rd Naval Air Force, Lieutenant of the

— page 221 —
55259/416
Serial 016-44
OCTIDATE 11.1
Subject: Report of War Patrol U.S.S. LCT 10.7.

November 3, 1944 (Cont'd)
2319 Correlated transit. Set course to pass east of R.A. (Lat. 15N, Long. 34E) 2346 Sight and SJ contact - 4400 yards - 0100 T. - voiced to the east. Small unknown. (Ship Contact #3)

November 4, 1944 (12th day)
0512 Div'd.
1200 Position: Lt. 60-55' S., Long. 1160-24' W.
1850 Surface.
Three native boat contacts cruise the night.

November 5, 1944 (11th day)
0518 Div'd.
0621 Surface.
0643 Sighted plane - 5 miles - 0900 T. Div'd. (2 plane Contact #2)
1200 Position: Lt. 50-55' S., Long. 1140-36' W.
1736 Surface. Four native boat contacts in sight.

November 6, 1944 (11th day)
0135 Strong AR contact 210 ncs.
3240 SJ contact - 9600 yards - 3050 T. Believed to be DTC submarine. 'e are in distress. 210 ncs is his radar frequency.
0309 Exchanged recognition signals via DUTC radar, 2nd blinker tube. 'e are convinced he is friendly. (2nd Contact #4)
0800 Div'd.
1200 Position: Lt. 40-41' S., Long. 1110-23' W.
1736 Surface.

November 7, 1944 (11th day)
0549 Div'd. He was with sound heads and hit log ripped in all day. No water over 100 feet. Other oily cells. Touch spot to be detected in.
1200 Position: Lat. 20-49' S., Long. 1090-23' W.
1909 Surface. Tilted on 3 men on lines to transit T.A.T.
2345 Passed mid point in L.R.I. M.R.I.

-3-

— page 225 —
35259/16
T.S.S. 1st (50259)
April 016-44
Oct. 17th
Subj: Report of Per Patrol U.S.S. 1st Lt. 7.
November 15, 1944 (Cost: 1)
Cousin: From a son of Lt. This uniform appears to be an
automatic weapon (probably 25mm) and its shilts are colored on
contact with the water. It was first reported with a rifle for
a large caliber gun. A second ship connected with a large
caliber gun closed out on the right. A
additional 1st Lt. was not satisfied in view of the
the shell was not sufficiently small to be
been severely damaged and probably sufficient
ship was not seen until just before
sail. This, other than a black shadow, is
distinguished by the color of the
deserted. The ship was not
surrender. The ship was

— page 226 —
5259/16
2-ri1 016-44
Cdr. T. J. C. H.
Subj at:  Report of Patrol to the North Atlantic

October 17, 1944 (Cont'd)

1046 Divd. SD int rtr nco.  Copylt ly cr st.
1200 Position:  Lt. 70-25.5 m., 1. 1060-22.5 m.
1309 Surf. acc.  Aiy is et rtrn to colr.
1920 Patrolline in ctrn. to CTN for XLT.
1930 Decod. decp.tech from Consuls. with shift in CTN to
    patrol between C.P.S. & D. and D.C. (CTD upon occ.
    plctn. of our line curd cuts.

November 16, 1944 (23rd day)

0647 Divd.
0734 Surf. acc.
1200 Position:  Lt. 70-02' 1 m., 1. 1050-05' 3 m.
1330 2st course for life curd station.
2123 Decod. nssg. from Consuls. with tht of C. C. curd ship
    hd been indif. itly. anc. ncl. ord. rcd us to prec.od
    to assign. sctn.  Ayr. sctn. course.  This int. acc. strike
    cost us four days on st. tion plus the cdtion. I. fuc. l. acc.
    "cr  c  littl. dis. pointd. patrol rly so slc. thso
    nihs wcr. ctrn. thc. crf of thc acc.

November 19, 1944 (24th day)

0652 Divd.
0721 Surf. acc.
1200 Position:  Lt. 70-41' 1 m., 1. 1060-10' 5 m.

November 20, 1944 (25th day)

0430 Decod. I. U.S. H. C. contact report. Decidcd to look into it.
0630 Divd.
0700 Surf. acc.
1200 Position:  Lt. 90-42' 1 m., 1. 1120-21' 1 m.
1700 Established patrol line prepared for the 6th of November
    contact.
2019 3.1.

— page 228 —
39259/A16
Serial 016-44
CO-IN: T.L.
Subject: Report of Torpedo Patrol

October 24, 1944 (29th day)

Weather has abated.

0600 Sighted 1000 tons of search light gear head. Diving 0320 T.
0610 Dived.
0625 Sighted small TC type patrol vessel pinning. (Ship Contact #6
0721 Sighted plane. (Lines Contact #6, HUTE)
0730 Lost patrol vessel to north.
0750 Sighted plane (same as above).
1200 Position: Lt. 110-17', 5 1/2', 10.6, 109'-10' E.
1327 Sighted smoke bearing 0460 T. (Sail, Cont. at 7).
Deter. Ind. bearing to be given to Lt. 1st. at 7.
normal approach course (140° T) at standard 5 sec. 1st. on
normal approach course at standard speed taking observations
every 20 minutes until 1700. Closest range to 1000 T.
yards. Sighted very tops of mast at 1432'. 2P reports
three sets of heavy screws. Ter at
6

— page 231 —
35259/16
3: 016-44
C: 111.1
Subj: 7. Report of "er Patrol U.S. 7. 7.

December 4, 1944 (33th day)
Sears still very rough. Skipped daily train dive since there was nothing to be found.
Position: Lt. 14-37", H., Long. 112-24".
Departed from. Set course for BULF. Lt. Cdr. I. Vito
CC. TCY COLI (SURV) Lt. Sgt. Captain to CO. Subj: 3 in.
Reported results to dtr. Captain, for P.M.L.

December 5, 1944 (40th day)
Decoded Consub's. With dispatch order, to pass to the operation control of Consub's. Decoded
6, and bidding us a farewell.
Div'd.
Subj: Decoded.
Position: Lt. 15-44", H., Long. 115-49".
Converted 3 and 5 men bell. Test tanks.

December 6, 1944 (41st day)
Sears still mountainous.
Resumed to operational control of Consub's. Attended
to send message to Consub's. "Fill with until it
reporting our fuel. No success. "Fill with until it
sunk.
Position: Lt. 19-05", H., Long. 116-02".
While attempting to send our message to Consub's, received
two iron hits flying our routine and instructions to stop.
Sent dispatch reporting receipt of these messages.

December 7, 1944 (42nd day)
Still beating ourselves about, to head in shoulders in
those seas. "Fill it over calm.
Lookout sighted periscope on stronger current. Lt. full
rudder all dead blank. Put it return. (Ship Contact #6)
Resumed base course.
Position: Lt. 21-11", H., Long. 119-22".
SD contact - 7 miles. Div'd. (Flt. Contact 12).
Remained submerged to routine torpedoes.
"Unfired.
Interference from another 35 b. ship 100 T.

-13-

— page 232 —
9/25/59 (33 259)
Serial 016-44
CGN 12-11-41
Subject: Report of Per Patrol U.S.S. Jack No. 7.

December 7, 1944 (cast 4)
2003 Loud unusual noise in 4 main generator. Secured 4 main engine to investigate. Later investigation secured 5 or the 10 large bolts in the armature from broken or snapped cut. Main itself not damaged. While working on 4, 3 developed a similar noise. Secured 3 main engine. Later investigation showed trace of these bolts in 3 secured cut. Increased recognition signals, calls and information via 5J with (HUMUL.

December 8, 1944 (43rd day)
Transiting B-31C with 4-0 hour old D.N. 6 now have a companion (CALL) with which we can examine synthetics in this sea. Dived. Had lued at 150 feet cell day to see what can be done to 3 and 4. Sin generators, to check 1 and 2 main generators and to investigate 1 and 2 main generators. In checking 1 and 2 main generators found loose nearly all of the small bolts in the inner ring on the fan. Connected repairs to 3. Position: Lat. 21-22° I., Long. 122°-17' E. Surficed.

December 9, 1944 (44th day)
0410 First star fix in 72 hours. 0655 Examine calls with (HUMUL). Dived. 1131 3D contact - 6 miles. (HUMUL Contact 13). Dived. 1200 Position: Lat. 21-36° I., Long. 124-55° E. 1315 Surficed. 1633 3 main generator back in condition.

December 10, 1944 (45th day)
2100 Set clocks changed one hour to -9 zone time. 1205 (I) Position: Lat. 21-07°.5 m., Long. 120-47° E. 1600 (I) 4 main generator back in condition.

-14-

— page 233 —
33259/416
Serial: 016-44
Class: U.S.S. JACK (SS3259)
Subject: Report of "ar Patrol U.S.S. JACK 7.
December 11, 1944 (46th Day)

0631(I) Dived.
0711(I) Surfaced.
1200(I) Position: 1st. 21-08" N, 1320-24" E.
1330(I) Set continuous touch on 4155 kcs. .ttte.gts to send
cisptch to CTG 17.7 requestin. Jirrter rcttin. and
instructions to T.L.P.
1700(I) Cleared abovs dispatch.
2115(I) Litterence from c.tor. 3d.
2200(I) Exn.ned reception cisptchle vir 3d. 3d vent out of
commission before calls could be c.s.c. 1.1ter
investi.tion suceed 3d permanently out of c.c. 1.1ssical.
attempted est.blisn c.c.1.1tinc on VV uns c.c.s.c.1.1ly.

0049(I) Exchanged a hastily e.s.signed thimble.
In corned her that our 3d. p.m. "out" pr.s.v.c.s.
Realized how. vuln. r.b. 1.1 got w.c. 1.1s by not n.v.1.1e
3d. 1.1ssistance comin. from us. It is c.n.1.1s.1.1ble that
one of our c.n.1.1ships could t.h.e.1.

— page 235 —
3. JAC 16. (SS259)
38259/16
3eriel 016-44
C.O. 1D 1L 1
Subject: Report of "ar Patrol U.S.S. JAC 16. 7.

December 16 to December 23, 1944. (Cont'd.)

206(I) December 20. Interference with another U.S. submarine.

0327(I) December 20. Mechanical recognition signals and calls.

0355(I) December 20. Mechanical recognition signals and calls.

3500(I) December 20. Set clocks ahead one hour to -12 zone time.

1600(I) December 21. Crossed 160th Meridian.

2400(I) December 21. Change to 0000 December 21 412 zone time.

0300(Y) December 22. Set clocks ahead one hour to 11 zone time.

2300(Y) December 22. Set clocks ahead one hour to 10 zone time.

2215(Y) December 23. Ruled flares for SD contact which closed to 5 miles. Plane immediately turned on his rudder.

2300(Y) December 23. Set clocks ahead one-half hour to 9 zone time.

December 24, 1944 (6th day).

Arrived P.M.II

-17-

— page 236 —
33259/416
Serial 016-44
Co. ID: 1111
Subject: Report of War Patrol 7.

(C) TARGET
The normal good weather and smooth sea were experienced enroute from Treasure to the area.

Upon taking departure from LAGUIS IT IS 5.7°F for R.A.T. China. I unusually heavy weather for this vicinity was encountered. Twenty to thirty knot winds are fifteen jost sea from north to the west of us from December 2 to December 12. Weather for the rest of the patrol was excellent.

(D) TIDAL INFLATION
The usual strong southerly set was found in the area. The southerly set alone was 1.5-2.5 knots, and the northerly set was 1.5-2.5 knots. The

— page 237 —
35259/16
Serial 016-44
OCP 1/2
Report of "Her Patrol 15.5.40. Task No. 7.
Subject:
3. Time & Date:
13. Type:
Int'l. Course
Int'l.

— page 239 —
58259/A16
Serial 016-44
CLASSDEL 1
Subject: Report of War Patrol U.S.S. [date] 7

(H) ATTACK DATA

U.S.S. [name] (SS-259) TORPEDO ATTACK 1.1 BATCH 7

TID: 23:00 LOVEDR 14, 1944 LAT.11-19.8 ft. LONG.10.0FT.55.

TARGET DATA:
Description: Coiroy consisted of upvards from 10 ships including escorts. Convoy was close inshore in shallow water (17 fathoms) with escorts forming a ring around the seaway side. Contact was made by radar at 23,650 yards. Escorts were radar squid and were plinking intermittently. Hi.nt was very dark and cloudy. Convoy had a land base located which made them impossible to see outside of 3,500 yards.

Ships sunk: 1 medium A.A., 5,000 tons (EU).

Ships damaged or probably sunk: none.

Damage Determined by: Commander officer and bridge personnel with ssed one torpedo hit which created a transoceanic explosion sending a column of smoke into the air at least 1,000 feet. A second detonation of the torpedo explosion was heard below which was at the correct time for the fourth torpedo to hit.

Target draft: 15 Course Z-20T Speed: 6 Range: 2,800 yards

O.T. SHIP DATA

Speed: 12 Course: 290° Depth: surface angle: 2°

PIR: CONTROL DO. DATA

Type attack: Light surface attack using continuous bearing input from the TBT and radar range. 4-3-2-1 spread was used.

-21-

— page 240 —
35259/A16
Serial 016-44
Cdr. T. H. T. L.
Subject: Report of "Air Patrol U.S. Task Force No. 7."

TECHNICAL DATA:
- Tubes: Mired 10.6 in. 10.4 in. 10.3 in.
- Track: 142 P 142 P 143 P 142 P
- Gyro: 348 348 346 347
- Depth: 6 ft. 6 ft. 6 ft. 6 ft.
- Power - H1 H1 H1
- Hit or Miss H1 H1 H1
- Erotic (Yes or No) 10 10 10
- Mark Torpedo 23 14-3-3 14-3-3
- Serial No. 61990 47662 26532 39345
- Mark Exploder 6-5 6-5 6-5 6-5
- Serial No. 26447 21876 25002 26362
- Actuation Set Contact Contact Contact Contact
- Actuation Actual - Contact - Contact
- Mark "Arched 16-1 16-1 16-1 16-1
- Serial No. 17603 3445 17751 10901
- Explosive Type Tpx Tpx Tpx Tpx
- Firing Interval - 10 sec. 6 sec. 10 sec.
- Type Spread -- 4 - 3 - 2 - 1 --
- Sea Conditions SICOT H
- Overhead Activity SKI, navy 1137
- Remarks Misses due to spread plan.

-22-

— page 242 —
33259/16
Serial 016-44
CC. 10th T.I.
Subject: Report of per Patrol U.S.S. T.G.K. No. 7.

TOPSIDES ATTACK DATA - attack number TWO

Tubes Tired No. 10 No. 9 No. 8 No. 7
Track angle 47 F 46° P 49° P 48° P
Gyro angle 165 165° 182° 163
Depth set 4 it. 4 it. 4 it. 4 it.
Power - - - -
Hit or Miss Hit Hit 1168 1168
Brrastic (Yes or No) No No No No
York Torpedo 16-1 16-1 16-1 16-1
Serial No. 54391 55490 54917 55129
Lark Exploder 8-5 8-5 8-5 8-5
Serial No. 87091 94131 85021 86431
Actuation Set Contact Contact Contact Contact
Actuation actual Contact Contact -
Tark "erhand 18-2 18-2 18-2 18-2
Serial No. 72664 72660 72660 72771
Explosive Typ Typ Typ Typ
Firing Interval - 9 sec. 10 sec. 12 sec.
Type Spread -- 4 - 3 - 2 - 1 --
Sea Conditions 5 0 0 T H
Overhaul activity SEW, heavy 127
Remarks Biases due to sprue plan.

-24-

— page 243 —
35259/16
Serial 016-44
C.O. 1D.D./1.L.
Subject: Report of periscope patrol 7.

(T) 1.1.2
No Remarks.

(J) 1.

— page 245 —
35259/416
Serial 016-44
Crew List

Subject: Report of "Air Patrol U.S.S. 3rd Int. 7.

(1) Radar

The "Operation during the patrol was fair. During the first part of the patrol land checks were picked up at the extreme end of the main sweep. On convoy was detected at range of 24,000 yards. The 3rd was used to exchange recognition signals & number of times with good results.

CIRCUIT 5

1. Trouble: Transmitter frequency drifting.
   - Type: 3rd unit out of tune every few minutes
   - Cause: Clipping of wave shocks.
   - Remedy: Replaced 706.7 and 726B and coil Italy returned transmitter.

2. Trouble: Voltage on "A" rail to radio receiver dropping.
   - Type: Gross full off.
   - Cause: Received both 534C's in "A" rail to radio receiver.

3. Trouble: On receiver in position found 5D21 being limited to get easy. 63.7 (Vl in transmitter) had a cracked tube.
   - Cause: Both tubes replaced.

4. Trouble: High voltage screen to ground is off unit.
   - Type: Liquid circuit noise.
   - Cause: Received both helium resistor over in 3V circuit.

5. Trouble: Loss of 630 high voltage in Indie tor unit.
   - Type: No sweep on any set in and LP lamps not lighted.
   - Cause: Replaced 7-36 in Indie tor unit.

6. Trouble: Voltage on "A" rail to radio receiver dropping.
   - Type: Cross filling off.
   - Cause: Received 534C(Vl) in "A" rail to radio receiver.

7. Trouble: No high voltage to transmitter. Transmitter not operating.
   - Type: Sound the transformer (T2 in 3V rectifier) had the exact duty shorted to ground.

-27-

— page 247 —
59259/16
Serial 016-44
CG: P.D. HILL
Subject: Report of Torpedo Control

(C)  DO NOT COPY, DISTRIBUTE, OR USE THIS DOCUMENT FOR ANY PURPOSE WITHOUT WRITTEN PERMISSION FROM THE NAVAL HISTORICAL COMMITTEE.

CONTINUED ON NEXT PAGE

(C)  DRAFTED BY THE NAVAL HISTORICAL COMMITTEE

The health of the crew was excellent. Two radiologists to the sick list were in good health. The radiologists were as follows:

COLT: 2, Arthur Henry, T-30, U.S. Navy
DIG: 1, Constance, 1st Lt. (retired)

FLANAGAN, Henry (m), 2d, 1st Lt., U.S. Navy
DIG: 1, D. G. C. L. (retired), 1st Lt., U.S. Navy
(Instruction, 1st Lt., U.S. Navy)

The submarine was in excellent condition at the time of the report. The quality and proportion of the food was very satisfactory. The food was well balanced and the food was well cooked. The food was

— page 251 —
27 December 1944.

CONFIDENTIAL
SECOND EMORSEMENT TO
USS JACK (SS259) Report
of Seventh War Patrol.

From: The Commander Submarine Squadron FOUR.
To: The Commander-in-Chief, UNITED STATES FLEET.
Via: (1) The Commander Submarine Force, LACITIC
(2) The Commander-in-Chief, U.S. PACIFIC FLEET.

Subject: U.S.S. JACK (SS259) - Report of Seventh War Patrol.

1. Forwarded, concurring in the remarks of Commander Submarine Division FOUR-Y-40.

2. The Commander Submarine Squadron FOUR congratulates the Commanding Officer, officers and crew of the U.S.S. JACK upon completion of this patrol, and for the dramatic inflicted upon the enemy.

3. It is recommended that the U.S.S. JACK be ordered with the following:

SUNK
1 - AK(EU), 5,000 tons
1 - Unknown
Total Sunk or Damaged - 5,000 tons, plus 1 unknown.

DALY, W. V. O'ROURKE.

W. V. O'ROURKE.

— page 253 —
1/2-10/A16-3(15)
Serial 043
SUBJECT: THIRD ENCOUNTER TO JACK REPORT OF SEVENTH WAR TATROL.
NOTES: THIS REPORT WILL BE DISPATCHED TO 625. U.S.S. JACK - SUMMER HIT AT TATROL.
Subject: T.S.S. JACK (SS259) - Report of Seventh War Patrol (27 October to 24 December 1944).

DISTRIBUTION:
(Complete reports)
Cominch (7)
CNC (5)
Cincpac (6)
ICFOA (1)
Conservpac (1)
Cinclant (1)
Consubsistant (6)
S/H. School, H/L (2)
CO, S/H. Base, H/L (1)
Consopac (2)
Consovespac (2)
Consubsovespac (2)
CTR 71.9 (2)
Comonpac (1)
Consuspac (40)
SUBA, H/L (2)
ConsubsapacSubordcom (3)
All Squadron & Division Commanders, Tactical Submarine Service (2)
All Submarines, Tactical Service (1)
J. H. Phillips
2. I. HYMES, 2nd, Flag Secretary.

— page 256 —
85259/16
Series: 021-45
Date: 1944-05-06
Subject: Report of Patrol U.S.S. JACKSON, 6.

---

**TECHNICAL INSTRUCTIONS:**

- December 24, 1944 arrived Pearl Harbor from seventh patrol.
- Submarines departed San Francisco, Calif., for overhaul at Pearl Harbor.
- Submarines were in excellent condition, ready for action.
- Was accomplished.

**CONTENTS:**

- Coming to battle.
- 5 most suitable to abort patrol.
- 3 most suitable to go to position after the 3rd mast.
- 3 rare indicator and PRU urls shifted to after and on coming to war.
- 5 installs including:
  - 4 periscope.
  - 2 variable units for periscope.
  - 3 speed valves with installed or not.
- Two 3.2 inch tubes for control.
- 2 periscopes installed.
- 1.7 inch periscope in control.
- 1-12 frequency meter installed.
- 1-12 receiver installed.
- 1-12 speed oscillator installed.
- 1-12 installed.
- Two new 1,000 cal-per-day lensmounted periscope stills installed.
- 1-12 electric periscopes re-located by recantation and modified.
- 1-12 periscopes re-located.
- 1-12 electric periscopes re-located

— page 257 —
55259/16
Serial 021-45
CG 1/1/41
Subject: Report of War Patrol to U.S. Task Force 8.

During overhaul the following officers were detached:

Lieut. (jg) T. T. Cushing, U.S.N.
Lieut. (jg) E. T. Cushing, U.S.N.
Lieut. (jg) T. P. Smith, U.S.N.
Designer E. P. T. Cushing, U.S.N.

During overhaul the following officers reported aboard:

Lieut. T. T. Cushing, U.S.N.
Hussein F. T. Cushing, U.S.N.
Hussein J. L. Smith, U.S.N.
Machinist T. T. Cushing, U.S.N.

April 1, 1945, overhaul completed. 1. Narrowly accurate Pearl.
April 9, 1945, arrived Pearl for voyage repairs en route to
Lorient. 2. 1945, training completed. 3. Both training and material
condition considered satisfactory. 4. 1945, was detached and left.
Nile in Pearl, Lieut. T. T. Cushing, U.S.N.
C. L. L. T. Cushing, U.S.N.

-2-

— page 258 —
53259/16
Serie: 021-45
Date: 1945-06-26
Subject: Report of Periscope Patrol No. 8.

List of C.I.S. series GPS on-board for this patrol.

| C.I.S. Series | Previous Patrols |
|||
| I. Comdr. A. S. | 10 | 7 |
| Lieutenant J. T. | 5 | 4 |
| Lieutenant H. V. | 9 | 5 |
| Lieutenant T. C. | 5 | 4 |
| Lieutenant J. F. | 5 | 4 |
| Lieutenant J. P. | 10 | 10 |
| Lieutenant J. | 0 | 0

— page 260 —
55259/16
Serial 021-45
USS TULSA
Subject: Report of Air Patrol to Torpedo, 15th, 1945, 8.

1030(1) Dived.
1051(1) Surfaced.
1200(1) Position: Lt. 150-17' I., Long. 1420-17' E.
1331(1) Dived.
1353(1) Surfaced.
1630(1) Dived.
1651(1) Surfaced.

1130(1) Dived.
1142(1) Surfaced.
1200(1) Position: Lt. 160-14' I., Long. 1370-45' E.
1430(1) Dived.
1449(1) Surfaced.
1500(1) Get clocks back one hour to -9 zone time (I). All times
    Lencorner will be 11st. til. unless specifically
    designated otherwise.

1631 Dived.
1645 Surfaced.

1030 Dived.
1046 Surfaced.
1200 Position: Lt. 230-40' I., Long. 1370-22' E.
1330 Dived.
1357 Surfaced.
1430 Dived.
1630 Surfaced.
1644 Dived.

1030 Dived.
1045 Surfaced.
1200 Position: Lt. 200-15' I., Long. 1370-20' E.
1230 Dived.
1330 Surfaced.
1340 Surfaced.
1450 Dived.
1630 Surfaced.
1650 Surfaced.
2030 Dived.
2030 Surfaced.

-5-

— page 262 —
55259/16
Cptl 021-45
Wk I
Subj: 22nd Patrol
Date: 1945 (22nd day)
USS
Position: Lt. 320-04', ltr. 133-39', B.
Surfaced: 1st 6 secs firing
Hatch: old listing mine. Lt. 320-04', ltr. 133-39', B.
Mark it with 2m.
Received message from Lt. 320-10', A. to patrol 2nd AWO east
of Long. 132-10', E.
On station for lifeguarding. Left mining mission.

Key 19, 1945 (23rd day)
0142 First of mining "2-29" picked up on 2.
0330 Left lifeguard station for 2nd AWO. Heard nothing from
our 1st nor could we resist 1st this time.
0432 Dived.
1200 Position: Lt. 320-10', ltr. 132-14', E.
1340 Sighted two (2) 2nd AWO on 2nd through periscope on course
210° T.
1912 Surfaced. Heaved up to the west of CHI 5L...

Key 20, 1945 (24th day)
0415 Lived south of CHI 5L... Heaved up for the island.
1200 Position: Lt. 320-35', ltr. 132-26', E.
2005 Surfaced.

Key 21, 1945 (25th day)
0001 After having an AWO contact at 76 ncs. loud on steady for
about ten minutes, sighted 2nd 2nd periscope off shore.
Connected listening away from CHI (1) A. using 2nd contact
on two planes at 2nd 2nd 2nd range. 2nd 2

— page 263 —
5259/16
crit 021-45
subj: report of "Mr. Petrol boat, 2nd Lt. 8.

hey 23, 1945 (26th day)

0425 Dived.
1200 Position: Lt. 32-20'1, Locs, 132-21' E.
2004 Dived.
2130 Reconnaissance signals are calls with U.S. TLO via 50,

— page 266 —
2559/16
Date: 1/21/45
Source: USS
Subject: report of per patrol report 10.8.

---

**Table of Contents**

| Section | Page |
||------|
| 0526   | 1. 3. 3. 1.

— page 267 —
35259/16
Serial: 021-45
Date: 1945-06-30
Subject: Report of Air Patrol U.S.S. Utah 10. 8.

June 3, 1945 (Cont'd.)

Received CansubPac dispatch stating our unknown was not a friendly surface force.

Received 1200 T or the interference. We had gained five degrees of bearing but in going so far as to have been able to sight the enemy, we were unable to get in close enough to fire. We were unable to get

— page 268 —
35259/16
Serial: 021-45
Date: 1945-06-01
Subject: Report of Patrol to 7.11.45

June 5, 1945 (40th day)

0431 Dived.
0645 Sighted first of four small fish. Boats. These apparently came out of battle and finished in the near vicinity of 7.11.45.

Position: 35-12N-37°T, Long. 125-45°E.
Surfaced.
2400 Sighted three lines on the horizon bearing 3200 T. 11.45. 2113 Sighted a boat. 2400 T., 3200 yards. 2400 T., 3200

— page 270 —
58259/16
Tent: 021-45
Date: 12, 1945 (49th day)
Subject: Report of War Patrol U.S.S. JACK No. 8.

June 12, 1945 (49th day)
448 Dived. Weather starting to pick up considerably.
200 Position: Lat. 31-52' N., Long. 132-30' E.
955 Surfaced.

June 13, 1945 (48th day)
455 Dived.
200 Position: Lat. 31-52' N., Long. 131-49' E.
955 Surfaced.
015 Received orders to depart station upon receipt and proceed to CHANN for refit. Departed station.
030 Attempted raise the U.S.S. TURBO and tell her we were dejecting, with no success.
205 Exchanged recognition signals and cells with U.S.S. DEVILISH via S.S. Weather briefing.

June 14, 1945 (49th day)
1200 Position: Lat. 30-27' N., Long. 136-22' E.
1200 Entered joint-zone line.

June 15, 1945 (50th day)
1200 Position: Lat. 25-37' N., Long. 139-15' E.

June 16, 1945 (51st day)
100 Set clocks ahead one hour to -10 zone time (1).
1200(R) Position: Lat. 20-49' N., Long. 139-38' E.

June 17, 1945 (52nd day)
145(R) Signed U.S.S. THREADMIN and U.S.S. QUILBACH.
1200(R) Position: Lat. 17-16' N., Long. 143-54' E.
-130(R) Exchanged recognition signals and cells with U.S.S. SPINCH.

June 18, 1945 (53rd day)
100(R) No information as yet as to who our escort is tomorrow.
145(R) Sent message to CH 17.7 asking for information on our rendezvous.
430(R) SJ contact bearing 1550 T, distance 17,000 yards. Proceed to be our escort, U.S.S. DOUBLET, IDL4. Proceeded to APL. HANGER for refit.

-15-

— page 273 —
3259/A16
Serial 021-45
CONTINENTAL

Subject: Report of War Patrol U.S.S. JACK No. 8.

(1) MAJOR DEFECTS AND DANGER (Cont'd.)

2. Ordnance & Gunnery

The three newly installed 1st-class torpedo destroyer
Charging Controllers developed a total of 150 volts ground to null
during the first two hours of charging. Insulation was inadequate,
both between panel rheostats and panel frames and between panel frames
and hull. No proper rheostat insulating material being in board,
charging from PACK to SAIPAN was accomplished by attaching the panels
from the hull and laying them on rubber mats on deck. At SAIPAN,
substances insulation was installed between the rheostats and the panel
frames, and rubber insulation between the panel frames and the hull.
There has been no further difficulty.

Failure to discover this defect until we had started on patrol
caused considerable inconvenience. JACK'S POINT, PACK HADER and
ship's force were all diligent in making cold panel tests on these
units, but of course failed to pick up ground which did not develop
until after the panels had heated up.

(1) RADIO

Radio performance during the patrol was good. Only three slight
detergents to equipment occurred which were repaired without diffi-
culty. The new amall, compact RES receiver performed very satisfac-
toryly over its entire frequency range. Another receiver of this
type to replace the present HAL-5 would create more needed room for
the continuous addition of equipment.

Radio reception was good at all times on all harmonics. Seven trans-
missions were cleared without difficulty with the exception of two
which are described under countermeasures.

Aircraft-submarine communications were carried on one occasion
due to missing Chance Number Six to SUBSCALE "B" from ComSubPac.com.
This resulted in our not using the correct voice call. In view of
the fact that it is necessary to work on the whole project and
aircraft frequencies, and the fact that Fox transmissions are liable
to be misread to jammer and weak signals, it is suggested that
ComSubPac.com assign serial numbers to important messages such as
publication and recognition signals changes. As it is such messages
can be missed without over having knowledge of their existence,
especially after a sixteen hour drive.

— page 275 —
53259/A16
Series: 021-45
Crew: 1
Subject: Report of War Patrol U.S.S. JACK No. 8.

---

**Subject:**

---

**RADAR (Cont'd)**

---

**Subj: - The 3D was used very little while actually on station because of the danger of detection. It was kept warned up all the time, however, so that the LF would be readily available in the event of an unidentified contact. Accurate to station performance was good, planes being picked up at ranges of thirty miles. The only casualty was a sea type 2X2 boat in the indicator unit.**

---

**ST - Performance was fair throughout the patrol. Land contacts could be made from sixty feet at ranges up to thirty thousand yards. There were no casualties.**

---

**LFF - Performance was good. No casualties.**

---

**AFR - Performance was good. Considerable inter-range from the ST at various frequencies. The only casualty was a bad 2X2 tube in the SFA.**

---

**SONAR CHAR AND SOUND CONDITIONS**

---

**Sonar gear performance satisfactory with only one casualty-pulled leads. No unusual sound conditions were observed.**

---

**DENSITY LAYER**

---

**Bathymetry performance was satisfactory with no unusual density layers encountered.**

---

**HEALTH, FOOD AND FIREABILITY**

---

**Food throughout the patrol was excellent. The commissary department gets a high dry-weight meal once a day. In addition to the food, the ship is equipped with a 12-inch gun, an automatic depth charge thrower, and a 20mm gun. The ship is also equipped with a 20mm gun and a 12-inch gun. The ship is also equipped with a 20mm gun and a 12

— page 277 —
3259/416
Serial 021-45
OCEANIC
Subject: Report of War Patrol U.S.S. JACK No. 8.

---

### (1) Communications, Countermeasures (Cont'd)

then receipted and authenticated. Engag signal was weak; NPN loud and clear.

**Time:** 1300 GMT; 3 June 1945
**Frequency:** 3470 kilocycles
**Position:** 31°-22'15"N, 135°-59'15"E.

---

**Time:** 2300 GMT; 7 June 1945
**Frequency:** 3355 kilocycles
**Position:** 32°-15'N, 132°-33'E.

---

### Radar Countermeasures

#### (1) Intercept of enemy signals.

All intercepts on the AFR coincident with available information contained in CHICAGO Top Secret "Japanese Shore Based Radar".

Ten centimeter radar interference believed not to be of was observed on the "U" scope. (Ship contact #1). Pulse width did not seem to be as wide as is reported for their 10 centimeter radar although it could not be measured. No AFR-5 was aboard.

#### (2) No jamming observed.

#### (3) No exception observed.

---

### Sonar Countermeasures

No enemy scanner encountered.

— page 280 —
20/16-3
Serial: 0144
O-O-N-T-P-I-D-B-N-T-I-L
23 June 1945.

SECOND ENCLOSURE TO
CO JACK 1cr, S2529/416
Serial 021-45 of 6-15-45.
Report of 8th War Patrol.

From: The Commander Submarine TERRY.
To: The Commander-in-Chief, United States Fleet.
Via: The Commander Submarine Force, U.S. Pacific Fleet.
The Commander-in-Chief, U.S. Pacific Fleet.

Subject: U.S.S. JACK (S3259) - Report of War Patrol Number EIGHT.

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

2. The Commander Submarine Squadron TERRY congratulates the Commanding Officer, officers and men of the U.S.S. JACK upon their successful execution of life guard duties.

SIGNATURE: [signature]

I.S. PARKS.

— page 283 —
35259/A16
Serial 030-45
Report of War Patrol U.S. Junk No. 9.

(A) PROCEDURE:
Received refit from Submarine Division 201 relief crew and U.S.S. PTCTNS. Refit received was excellent in all respects and was completed in normal time. Congratulations to the work on our hydrodynamically designed and equipped patrol vessel. Our operating pistons in the main vents and floods and two special valves in the hydraulic manifold tubes, plus cracking nearly the entire system.

Completed four days of training firing four exercise shots. Training Officer was Commander B. F. McAuliffe, USN.

Lieutenant J. F. C. O'LEARY, USN, was attached. Mission T. C. ASHLEY, USN, reported aboard.

July 12, 1945, ready for sea.

(B) NATURE:
On July 12, 1945 the following officers and GTs had completed war patrols as indicated:

| Officer | Previous War Patrols |
|||
| Lt. Comdr. A. C. TURNER, USN | 1 |
| Lieutenant T. V. LIPPMAN, USN | 6 |
| Lieutenant V. C. LEE, USN | 10 |
| Lieut. (jg) J. F. BAKER, USN | 6 |
| Lieut. (jg) P. F. JONES, USN | 5 |
| Ensign H. T. BAKER, USN | 11 |
| Ensign T. C. ASHLEY, USN | 0 |
| Ensign T. L. HAYES, USNR | 1 |
| Technician J. E. SHIVERS, USN | 1 |

| Officer | Previous War Patrols |
|||
| R. I. MINE, OCS(1st) | 3 |
| K. C. HILLMAN, CG(1st) | 7 |
| C. C. HATLEY, CG(1st) | 6 |
| B. P. PRATT, CG(1st) | 6 |
| T. J. McAULIFF, CG(1st) | 3 |
| W. T. SULLIVAN, CG(1st) | 3 |
| S. D. SLITE, CTB(1st) | 1 |
| D. W. WATSON, CO(1st) | 1 |

-1-

— page 284 —
35259/16
Serial 030-45

Subject: Report of War Patrol U.S.S. JACK KO. 9.

July 12, 1945 (1st day)

1505(F) U.S.S. JACK KO. 9. (S.S. JACK KO. 9.)
Harbor, China, 1.1.
1504(F) Joined escort. 1C761.
1845(F) Escort released.

July 13, 1945 (2nd day)

0013(F) Exchanged recognition signals and calls with USS SINKET (SS408) via SGT.
1000(F) Sighted USS PITATO (SS387).
1037(F) Div.
1130(F) Surfaced.
1200(F) Position: 1st. 170-28' N., Long. 1430-30' E.
1320(F) Div.
1402(F) Surfaced.
1623(F) Div.
1703(F) Surfaced.
2110(F) Evening fire showed us to be ten miles outside of joint zone
    lane. Pound due to faulty Arma Course Clock. It was sticking on the left of the base course. (See major defects).

July 14, 1945 (3rd day)

1000(K) Set six 10-foot blocks on the bow to conform to -9 zone time (I).
HOT: all following times are 11PM time unless specifically
    designated otherwise.

1042(I) Div.
1104 Surfaced.
1200 Position: 1st. 200-26' N., Long. 1390-50' E.
1332 Div.
1420 Surfaced.
1635 Div.
1708 Surfaced.

July 15, 1945 (4th day)

1030 Divad.
1105 Surfaced.
1200 Torpedo. 1st. 200-50' N., Long. 1340-31' T.
1330 Div.
1400 Surfaced.
1632 Divad.
1715 Surfaced.
1910 Plane sighted. IFF response.

-2-

— page 285 —
38259/16
Serial 030-45
July 16, 1945 (5th day)

0230. Interference on SJ radar. Believed to be friendly surface ship.
0307. SJ contact -- two pips -- 23,000 and 20,000 yards. Contacts on
south-east course. One large and one small ship. No IFF
response. Avoided. Nearest range 7,000 yards.
1032. Div'd.
1101. Surfaced.
1200. Position: Lat. 20-55' N., long. 1280-52' E.
1327. Div'd.
1400. Surfaced.

July 17, 1945 (6th day)

1200. Position: Lat. 20-58' N., long. 1230-00' E.
1320. Sighted TPBYAT ISLAND.
1500. Arrived at the end of joint zone "DECAMP". Heeded north through
"DIRTCT" and "CHET BONE" to our liferaud station in "HICHE".

July 18, 1945 (7th day)

0830. Sighted first of toady's friendly planes.
1200. Position: Lat. 23-12' N., long. 1240-11' E.
1645. Sighted last of today's friendly planes. Today's total 22.
1720. Arrived on station. Our operation order calls for us to liferaud for troop transports between UTAH and CHINA. Our
reference point is "NAV - 8". On even days we are on station
90 miles bearing 1000 T. from reference point. On odd days we
are on station 90 miles bearing 1400 T. from reference point.
Daily "office hours" are from 0900(1) to 1600(1).

July 19, 1945 (8th day)

0620. Div'd.
0645. Surfaced.
1200. Position: Lat. 23-11' N., long. 1250-06' T.
1600. No planes sighted today. Undoubtedly due to marine weather.

July 20, 1945 (9th day)

0620. Div'd.
0645. Surfaced.
0956. Sighted PBY who told us that plan was to fly flying today.
1200. Position: Lat. 24-07' N., long. 1250-17' E.
1210. Sighted above PBY for the 1st time. No other planes sighted
today.

— page 287 —
88259/16
8 11 030-45
1945

July 24, 1945 (CONT'D.)

1440 Sighted last friendly plane today. Today's total 85.
1629 Div'd.
1948 Surfaced.

July 25, 1945 (14th day)

0531 Div'd.
0850 Surfaced.
0909 Sighted first friendly plane today.
1200 Position: Lat. 23°09' N., Long. 125°14' E.
1608 Sighted last friendly plane today. Today's total 183.
1613 Div'd.
1945 Surfaced.

July 26, 1945 (15th day)

0526 Div'd.
0850 Surfaced.
0905 Sighted first friendly plane today.
1200 Position: Lat. 24°05' N., Long. 125°39' E.
1540 Sighted last friendly plane today. Today's total 131.
1610 Div'd.
1945 Surfaced.

July 27, 1945 (16th day)

0526 Div'd.
0850 Surfaced.
0905 Sighted first friendly plane today.
1200 Position: Lat. 23°10' N., Long. 125°12' E.
1507 Sighted last friendly plane today. Today's total 86.
1617 Div'd. This is JACK's "Wide No. 1,000" in 932 days since
conclusioning. Pour men aboard have made them all.
1950 Surfaced.

July 28, 1945 (17th day)

0534 Div'd.
0852 Surfaced.
0931 Sighted first friendly plane today.
1200 Position: Lat. 24°01' N., Long. 125°45' E.
1605 Sighted last friendly plane today. Today's total 65.
1620 Div'd.
1945 Surfaced.

— page 289 —
35259/A16
Serial: 030-45
CUTT: 1
Subject: Report of War Patrol B.S.S. Jack No. 9.

August 3, 1945 (23rd day)

0533 Div'd.
0816 Surfaced.
1058 Sighted first friendly plane today. Received odd IFF response. It consisted of two short-ruled scan curve wide one equilateral to the width of the "emergency" response. Had every effort to contact plane (a B-17) by WFR (both bands one and four) and on 4475. No answer. Plane circled us and went out on course 2400 T. He followed at four engine speed. Plane returned, circled us once more and went out on 2300 T. To kept going. Plane returned and was last seen on course 1300 T. Today's survey. Contacted the base on 4475 and asked them if anyone was in trouble down here. Their answer "negative". Told the base we had received possible emergency IFF from a PLUTO but were unable to establish communication with him. End of the Story. We resumed our patrolling at 1203. Position: Lat. 23-09' h., Long. 125-43' E. Sighted last friendly plane today. Today's total 81. 1340 Sighted last friendly plane today. Today's total 81. 1626 Div'd.
1952 Surfaced.

August 4, 1945 (24th day)

0528 Div'd.
0819 Surfaced.
0900 Sighted first friendly plane today.
1200 Position: Lat. 23-09' h., Long. 125-43' E.
1520 Sighted last friendly plane today. Today's total 81.
1611 Div'd.
1947 Surfaced.

August 5, 1945 (25th day)

0530 Div'd.
0819 Surfaced.
0832 Sighted first friendly plane today.
1200 Position: Lat. 23-09' h., Long. 125-22' E.
1240 Sighted last friendly plane today. Today's total 139.
1545 "is informed by torpedo men that a Mark 27 torpedo had been
watered with hypo developing fluid in place of distilled water.
I felt that the battery was completely shot and not knowing
what reactions might result, decided to remove the battery and
throw it overboard.
1640 Battery removed and thrown overboard.
1646 Div'd.
1947 Surfaced.

-7-

— page 290 —
SS259/A16
:  Serial 030-15
:  SUBJECT:  Report of War Patrol U.S.S. TACK No. 9.

August 6, 1945 (26th day)
0525  Div'd.
0846  Surfaced.
0850  Sighted first friendly plane today.
1200  Position:  Lt. 24-01' N., long. 1250-46' E.
1515  Sighted last friendly plane today.  Today's total 44.
1618  Div'd.
1949  Surfaced.
2015  Patched hole in #4 muffler.

August 7, 1945 (27th day)
0533  Div'd.
0846  Surfaced.
0923  Sighted first friendly plane today.
1200  Position:  Lt. 23-13' N., long. 1250-13' E.
1550  Sighted last friendly plane today.  Today's total 82.
1604  Div'd.
1938  Surfaced.

August 8, 1945 (28th day)
0538  Div'd.
0845  Surfaced.
0848  Sighted first friendly plane today.
1200  Position:  Lt. 24-00' N., long. 1250-46' E.
1530  Sighted last friendly plane today.  Today's total 115.
1608  Div'd.
1921  Surfaced.  Converted #3 end #5 to rain ballast tanks.

August 9, 1945 (29th day)
0536  Div'd.
0844  Surfaced.
0848  Sighted first friendly plane today.
1200  Position:  Lt. 23-18' N., long. 1250-19' T.
1615  Sighted last friendly plane today.  Today's total 214.
1618  Div'd.
1927  Surfaced.

August 10, 1945 (30th day)
0532  Div'd.
0846  Surfaced.
0855  Sighted first friendly plane today.

-8-

— page 292 —
35259/416
Serial: 030-45
Subject: Report of War Patrol U.S.S. JACK No. 9.

August 15, 1945 (35th day)

0551 Dived.
0639 Surfaced.
0841 Sighted first friendly plane today.
1017 Received dispatch from Consubmarine officially ordering us to stop offensive action.
1200 Position: Lat. 23-02'N., Long. 125-46'E.
1040 Sighted last friendly plane today. Today's total 111.

August 16, 1945 (36th day)

0534 Dived.
0642 Surfaced.
0650 Sighted first friendly plane today.
1200 Position: Lat. 24-02'N., Long. 125-46'E.
1725 Sighted last friendly plane today. Today's total 111.

August 17, 1945 (37th day)

0539 Dived.
0845 Surfaced.
0847 Sighted first friendly plane today.
1200 Position: Lat. 23-21'N., Long. 125-23'E.
1602 Sighted last friendly plane today. Today's total 105.
2100 Received dispatch from Consubmarine for the NAV (in command) TOEPISH, CGBIA, CLCK-R and JACK to proceed in company to D.P.A.

August 18, 1945 (38th day)

C770 Dived.
0807 Surfaced.
0930 Joined NAV, CGBIA and CLCK-R.
1200 Position: Lat. 23-08'N., Long. 125-45'E.
1425 Intercepted the formation.
1346 Entered joint zone lane.
2243 Set contact on four ships bearing 1900 T. distance 22,000 yards.
    but exchanged precautionary air to see what they could.

August 19, 1945 (39th day)

1200 Position: Lat. 19-39'N., Long. 130-02'E.
    August 20, 1945 (40th day)

1200 Position: Lat. 16-37'N., Long. 135-41'E.
1900 Set ships clocks ahead one hour to night ten zone, time (F).

-10-

— page 295 —
35259/16
Serial 030-45
Cpl. J. D. H. T. L.
Subject: Report of War Patrol U.S.S. Jack No. 9.

(C) TARGET
The weather was clear and the seas smooth, with the exception of two periods, 19-20 July and 2-5 August, during which we were in the vicinity of Lat. 24° N., Long. 125° E., on the extreme edge of typhoons.

(D) TIDAL INFLATION
Current on the Lat. 24°-03' N., Long. 125°-43' E., station set westerly, with a drift of 0.5 to 1.5 knots. On the Lat. 23°-10' N., Long. 125°-10' P., station the current was of the same strength, and usually in a southeasterly direction; occasionally the set shifted to the northeast.

(E) NAVIGATIONAL AID
No comment.

(F) SHIP CONTACTS
None.

(G) AIRCRAFT CONTACTS
An average of 79 planes per day, all friendly, were sighted on station.

(H) ATTACK DATA
No enemy contacts.

(I) MINES
No comment.

(J) ANTI-SUBLIME TASKS AND EVASION TACTICS
No comment.

(K) LADDER DIRECTIONS AND DIALECT
On 18 July a leak was discovered in the fresh water cooling system of #1 main engine. A leaky rubber ring on #7 cylinder liner was replaced, then #9 cylinder liner was found to be cracked, and was replaced by a spare. The engine had 856 hours operation since last overhaul and the liners had a total of 4,276 hours in service.

— page 298 —
38259/416
Serial 030-45
CG 1/2
Subject: Report of War Patrol U.S.S. JACK No. 9.

(P) HEALTH, FOOD AND HEALTH
The health of the crew was good, with the exception of two cases of Ureteral Colic (non-veneraal), which caused a loss of four man-days each. The food was generally of good quality and uniformly well prepared. The liberal allowance of fresh frozen foods went far toward making up for the shortage of fresh vegetables.

All living compartments were very comfortable through the patrol. The four hour submerged period each morning and evening on station served to break up the surfeit of routine without developing the discomforts of a long submersion.

(Q) PERSONAL
(a) No. of men detached after previous patrol 13
(b) No. of men on board during patrol 74
(c) No. of men qualified at start of patrol 58
(d) No. of men qualified at end of patrol 73
(e) No. of unqualified men making their first patrol 11

State of training and performance of duty of both officers and enlisted men were in all respects satisfactory. In particular, the new men, having had training in various school boats after leaving submarine school, worked into the organization more smoothly than had the new men on previous patrols.

(R) TILLAGE SHIPPING - TILLAGE
| Base to area | Miles | Fuel Used |
||-------||
| Base to area | 2,000 | 30,000 |
| In area     | 5,670 | 55,600 |
| Area to base | 2,520 | 66,300 |
| Total      | 11,520 | 151,900 |

* Pit To Miles.
(D) DRAFT
Days enroute to area 6
Days in area 32
Days enroute to base 12
Days submerged * 24

* Submerge d for about four (4) hours each morning and evening.

-16-

— page 299 —
35259/AL6
Battles: 030-45
Cumulative: 11,000 gal.s, 25 days
Pilot: 15 days
Pilot terminating this patrol: Dispatched orders.

* Upon arrival SAFN.
(U) RADIO AND RADAR COMMANDING OFFICER:
No comment.
(V) EMERGENCIES:
None.

-17-

— page 301 —
5-12/16-3
Serial: 0164
CONFIDENTIAL

SECOND ENCLOSURE TO
USS JACK NER PATROL
Number line dated
29 August 1945.

From:
To:
Via:

Subject:
U.S.S. JACK (SS255) - report of North Star Patrol.

1. Forwarded concurring in the remarks of Commander Submarine Division OIC TERRY THO.

2. In his remarks of 27 July the Commanding Officer makes note of the JACK's 1000th dive and records that four men aboard have made them all. The names of these men are:

HOCKEY, Terrence J., 24, 66 CC, CROCH (an) (T), USN
HARLEY, Clair C., 311 01 89, CRA (an) (T), USN
SALISBURY, Walter 2., 268 42 27, CRA (an) (T), USN
LEGRA, Albert J., 202 82, MOLLE, (T), USN

The splendid service of these men constitutes an inspiring example of steadfastness and devotion to duty.

3. The Squadron Commander concentrates the Commanding Officer's efforts and runs of the JACK upon the completion of that vessel's ninth war patrol. He further desires to congratulate the men upon the JACK's fine war record of 115,923 tons of cargo shipping sunk and 42,000 tons damaged.

C. H. WHITINS.

— page 302 —
12-10(A)/ A16-3 (18)
Serial 0378
CONFIDENTIAL

THIRD ENDORSEMENT TO JACK REPORT OF Ninth War Patrol
COMMSUSP.C PATROL REPORT NO. 896
U.S.S. JACK - Ninth War Patrol.
From: The Commander Submarine Force, Pacific Fleet.
To: The Commander in Chief, United States Fleet.
Via: The Commander in Chief, U.S. Pacific Fleet.
Subject: U.S.S. JACK (85295) - Report of Ninth War Patrol (12 July to 29 August 1945).

1. The ninth war patrol of the U.S.S. Jack, under the command of Lieutenant Commander S. S. Furnlan, U.S. Navy, was conducted off the eastern coast of Formosa. The mission of this patrol was lifesaver duty for U.S. troop transport planes flying from Luzon to Okinawa and return.

2. No contacts were made with enemy surface craft and no necessity arose to rescue air-borne personnel.

3. Award of Submarine Combat List, for this patrol is not authorized.

4. The Commander Submarine Force, Pacific Fleet, congratulates the commanding officer, officers, and crew of the J.S.S. Jack at its return.

S. C. CR. FKD, Chief of Staff.

Distribution and authentication on next page.

— page 303 —
12-10(.)/  .16-3(18)
Serial 02378
CO. FISHER, L. L.
TEL. 2-10(.)/  .16-3(18)
JACK H. H. to
Ninth Air Patrol.
CO. SUBF.C. 2. HNL. H. OF. NO. 596
U.S.S. JACK - 11TH AIR PATROL.
subject: U.S.S. JACK (55259) - Report of Ninth Air Patrol
(12 July to 29 August 1945.)

DISTRIBUTION:
[Column headers]
(7)
(5)
(5)
(1)
(1)
(1)
(1)
(8)
(2)
(1)
(2)
(1)
(2)
(1)
(3)
(20)
(2)
(3)

SUBJECT:
(1)
(2)
(5)
(2)
(1)
(2

— page 304 —
7-108
: 0K-13-08

THIS MICROFILM IS
THE PROPERTY OF
THE UNITED STATES
GOVERNMENT

MICROFILMED BY
NPPSO-NAVAL DISTRICT WASHINGTON
MICROFILM SECTION