U.S.S. SHARK (SS-314) — war patrol report SS-314_SHARK.pdf

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OPERATOR [HANDWRITTEN: L. Frye]
DATE [HANDWRITTEN: 9-10-80]

THIS MICROFILM IS
THE PROPERTY OF
THE UNITED STATES
GOVERNMENT

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

MICROFILMED BY
NPPSO-NAVAL DISTRICT WASHINGTON
MICROFILM SECTION

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

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[HANDWRITTEN: NRS 172]

[HANDWRITTEN: SHARK (SS-174 / SS-314)]
[HANDWRITTEN: WORLD WAR II PATROL FILE]
[HANDWRITTEN: ACTION REPORTS]

[HANDWRITTEN: ALL MATERIAL ON THIS REEL IS DECLASSIFIED]

[HANDWRITTEN: FOR DECK LOOS CONSULT NATIONAL]
[HANDWRITTEN: ARCHIVES WHICH HAS CUSTODY.]

[HANDWRITTEN: J.A. KOONTZ]

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

HISTORY OF SHIPS NAMED SHARK

The nuclear submarine SHARK (SS(N) 591) is the sixth ship of the Fleet
to bear the name.

The first SHARK, a 196-ton schooner of 12 guns, was built by the
Washington Navy Yard. She was launched on 17 May 1821. The date of her
commissioning is not known. Lieutenant Matthew C. Perry, USN, was ordered
to proceed to the Washington Navy Yard to attend to the equipment of SHARK
which was ready to receive her crew on 2 June 1821.

SHARK measured 86 feet between perpendiculars; length of keel 67 feet,
4 inches; extreme beam, 24 feet, 7 inches; depth of hold, 10 feet, 4 inches;
average speed, 8 knots; and tonnage, 198. She had a complement of approximately
70 officers and men and was armed with ten 18-pounder carronades and two
9-pounder long guns.

SHARK sailed from the Washington Navy Yard on 15 July 1821 for New York.
She cleared New York Harbor on 7 August 1821 to make her first cruise for the
suppression of the slave trade and piracy. Sailing by the way of the Madeira,
Canary and Cape Verde Islands for the coast of Africa, she returned by the
way of the West Indies to New York on 17 January 1822.

SHARK put to sea from New York on 26 February 1822 and joined Commodore
James Biddle's squadron for the suppression of piracy and slave trading in
the West Indies. On 25 March 1822, Lieutenant Perry took formal possession
of what is now Key West, Florida, in the name of the United States. He gave
it the name of Thompson's Island in honor of the Secretary of the Navy, and
named the harbor Port Rodgers. Under orders of Captain Biddle, SHARK departed
Nassau on 14 August 1822 for another cruise to the coast of Africa and made
her return to Norfolk on 12 December 1822. She again sailed for the West
Indies in February 1823 and returned to New York on 9 July for repairs.
Lieutenant W. H. Stevens relieved Lieutenant Perry in August and SHARK sailed
from New York on 5 October 1823, carrying Captain John Rodgers and three Navy
surgeons to Thompson's Island for the purpose of examining and reporting on the
fitness of that place as a rendezvous and base for naval vessels. She
debarked Captain Rodgers and his party at Norfolk on 16 November 1823 before
resuming her cruise in the West Indies. She returned to New York, 13 May 1824.

After repairs in the New York Navy Yard, SHARK, under command of Lieutenant
Otho Norris, sailed from New York on 5 October 1825 and cruised in the West
Indies and the Gulf of Mexico until 29 August 1826 when she arrived at Norfolk.
On 28 November 1826 she put to sea for another cruise along the coast of Africa,
making her return by way of the Caribbean to arrive at New York on 5 July 1827.

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SHIPS NAMED SHARK

After five years of inactivity, SHARK sailed from Norfolk on 25 September 1833
to cruise extensively in the Mediterranean for the protection of American
commerce until 22 January 1838 when she cleared Gibraltar for the United
States. Sailing by way of the West Indies, SHARK arrived at the Norfolk Navy
Yard on 24 March 1838.

Under command of Lieutenant A. Bigelow, SHARK put to sea from Hampton
Roads on 22 July 1839 for duty with the Pacific Squadron. She was the first
United States man-of-war to pass through the Straits of Magellan from east
to west, 13 December 1839, bound for Callao, Peru. During the next five years
she spent much of her time along the coast of Peru for the protection of
American citizens and property during civil disturbances in that country,
making infrequent cruises northward to observe conditions in Panama and to
receive mail. She was ordered to Honolulu in the spring of 1846 to undergo
thorough repairs in preparation for an exploratory voyage up the Columbia
River of the Oregon Territory. She reached the coast of Oregon, 30 miles
above the mouth of the Columbia River, on 15 July 1846, and soon crossed the
bar for observations in the valley regions of Astoria and Fort Vancouver.
She sailed down river from Vancouver on 23 August and was again at the mouth
of the Columbia River on 8 September 1846. The next day was devoted to
observations on the bar and preparations for crossing. The attempt to cross
was made on 10 September 1846 and resulted in wrecking the SHARK without
casualty to her officer or crew. They were taken to San Francisco by the
chartered Hudson's Bay schooner CADBORO.

The second SHARK (SS 8) was launched 19 October 1901 at the Crescent
Shipyard, Elizabethport, New Jersey, under a sub-contract from the J. P.
Holland Torpedo Boat Company. The submarine was commissioned 19 September
1903 and after training and evaluation experiments at the Naval Torpedo Station
of Newport, Rhode Island, trained midshipmen at the Naval Academy. She was
placed out of commission 21 April 1908 and disassembled for transportation on
board CAESAR (AC 16) by way of the Suez Canal to the Philippine Islands. She
was recommissioned at Cavite 14 August 1908 to continue training and
experimental work in Philippine waters. Her name was changed to A-7, effective
17 November 1911, and she patrolled in Manila Bay and off Corregidor Island
during World War I. She was decommissioned for the last time on 12 December
1919, following authorization for use as a practice target. Her name was
stricken from the Navy list on 16 January 1922.

The third SHARK (S.P. 534), a 74-foot motor patrol craft, was acquired
by the Navy on 17 May 1917 and first commissioned on 24 May of the same year
for service in the Boston Section Patrol, under the Commandian of the First
Naval District. Her entire career was spent in patrolling ocean approaches
to Boston Harbor and along the coast as far as Rockland, Maine. She was
decommissioned on 19 January 1919 and sold 4 November 1919.

The fourth SHARK (SS 174) was built by the Electric Boat Company of
Groton, Connecticut. Her keel was laid 24 October 1933 and she was launched
on 21 May 1935, under the sponsorship of Miss Ruth Ellen Lonergan, twelve-
year-old daughter of United States Senator Augustine Lonergan of Connecticut.
The submarine was placed in commission at the Submarine Base, New London,
Connecticut, on 25 January 1936, Lieutenant C. J. Cater, USN, in command.

2

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SHIPS NAMED SHARK

SHARK's overall length was 298 feet, 1 inch; extreme beam, 25 feet,
1 inch; standard displacement, 1,316 tons; mean draft, 13 feet, 10 inches;
and submerged displacement, 1,968 tons. Her designed speed was 19.5 knots
on the surface and 8.75 knots submerged. She was designed for a complement
of 5 officers and 45 men; and was armed with six 21-inch torpedo tubes
(including 2 deck-firing tubes), one 3-inch .50 caliber gun, and two .50 caliber
guns and two .30 caliber guns. She was designed to carry 16 torpedoes.

SHARK cleared New London on 27 February 1936 for shakedown cruise which
included incidental visits to the Panama Canal, principal island ports of the
Caribbean Sea and gulfport cities of the United States. She returned from
this cruise to New London on 13 May 1936 and after final alterations and
trials out of the Portsmouth Navy Yard, New Hampshire, put to sea from New
London, 8 February 1937, bound for the Pacific.

SHARK arrived at San Diego on 4 March 1937 and spent the next two years
in a schedule of operations from that base as a unit of Submarine Division 13,
Squadron SIX, Submarine Force, U. S. Fleet. This duty included training
exercises with her division, Fleet tactics along the western seaboard, and
periodic cruises for Army-Navy war problems and battle practice in waters
extending to the Hawaiian Islands. She entered the Mare Island Yard on 16
August 1938 for a regular overhaul and got underway from San Diego on 16
December to base operations from Pearl Harbor as a unit of Submarine Division
13, Squadron FOUR.

SHARK terminated operations in the Hawaiian area on 3 December 1940 when
she got underway from Pearl Harbor to join the Asiatic Fleet at Manila,
Philippine Islands, on 20 December 1940. She maintained a busy schedule of
fleet tactics and exercises in the Philippine waters from the Naval Base of
Cavite, and was under the command of Lieutenant Commander Lewis Shane, Jr.,
USN, when the Japanese struck Pearl Harbor.

SHARK got underway from Manila the night of 9 December 1941 to patrol
waters of the Philippine Islands and was at sea the next day during the
Japanese bombing raids on Manila. On 11 December she investigated Tabayas
Bay for signs of enemy transports, then came to anchor in Santa Cruz Harbor.
On 13 December she hailed a native fisherman and sent him into the village
of Marinduque to inform the population of the outbreak of war. The Mayor of
the village and fifteen men came out to receive instructions including the
one to extinguish the Santa Cruz light. She was ordered to return to Manila
on the 19th and arrived in port on 21 December 1941 to embark Admiral Thomas
C. Hart, Commander-in-Chief of the U. S. Asiatic Fleet, for transportation to
the Dutch Submarine Base at Soerabaja, Java, where some of the Asiatic Fleet
submarines would base their operations.

Under the command of Lieutenant Commander Lewis Shane, Jr., SHARK was
barely missed by a torpedo from a Japanese Submarine on 6 January 1942, and
four days later was ordered to Ambon Island where an enemy invasion was
expected. On 27 January 1942 she was directed to take station with submarines
patrolling Molucca Passage, then ordered to cover passage east of Lifometola,
and later expanding her patrol area to include Banka Passage. On 2 February
1942 she reported to her base at Soerabaja, that she had been depth-charged.

3

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SHIPS NAMED SHARK

Ofi Tifore Island and had missed on making a torpedo attack. Five days later:
she reported chasing an empty cargo ship heading northwest. This was the last
message or contact with SHARK and she was given up for lost on 7 March 1942.
Records available after close of World War II did not reveal the cause or
date of her loss.

SHARK (SS 174) was awarded one battle star for her support of Asiatic
Fleet Operations in the Philippines. Her successive commanding officers were
Lieutenant C. J. Cater (25 Jan 1936 - 18 May 1939); Lieutenant P. D. Compton
(18 May 1939 - 24 Mar 1941); Lieutenant L. R. Daspit (temporary command
25 Mar-17 Apr 1941); and Lieutenant Commander Louis Shane, Jr., who took
command 17 April 1941 and perished with his submarine in February 1942.

The fifth SHARK (SS 314) was built by the Electric Boat Company of
Groton, Connecticut. Her keel was laid 28 January 1943 and she was launched
17 October 1943, under the sponsorship of Mrs. Albert Thomas, wife of the
Honorable Albert Thomas, Representative to the Congress of the United States
from the Eighth District, Houston, Texas. The submarine was placed in
commission at the Submarine Base, New London, Connecticut, on 14 February
1944, Lieutenant Commander Edward Noe Blakely, USN, in command.

SHARK's overall length was 311 feet, 9 inches; extreme beam 27 feet, 3
inches; standard displacement, 1526 tons; mean draft, 15 feet, 3 inches;
submerged displacement, 2424 tons; and a designed depth of 400 feet. Her
designed speed was 20.25 knots on the surface and 8.75 knots submerged. SHARK
was armed with ten 21-inch torpedo tubes, one 5-inch .25 caliber gun, one 40-mm gun, one
20-mm gun, and one .50 caliber machine gun.

SHARK completed trials and a schedule of training out of New London
until 26 March 1944, then got underway for the Pacific. She transited the
Panama Canal, 4-9 April, and arrived at the Submarine Base of Pearl Harbor
on the 24th of April for final training in the Hawaiian area.

SHARK put to sea on 16 May 1944, forming a coordinated attack group with
submarines PINNADO (SS 387) and PILOTFISH (SS 386) for search of waters to
the west of the Marianas. Touching at Midway (20-21 May), she submerged ahead
of an enemy convoy in the early morning of 2 June 1944 and pressed home an
attack for hits on an enemy tanker and sank the overlapping target which was
later identified as the 4,700-ton freighter CHIYO MARU (20°-53'N; 140°-17'E).
She evaded a string of 39 exploding depth charges from the milling enemy
escorts and commenced tracking another heavily escorted convoy on the afternoon
of 2 June 1944. In maneuvering for attack approach she encountered a patrolling
destroyer dead ahead while between the center and port column of the convoy.
Failing in a maneuver for a "down-the-throat" shot, she passed the enemy
at 180 yards and sent four torpedoes flash towards a heavy-laden cargo ship.
She was rewarded by four hits which sent the 6,886-ton KATSUKAWA MARU to the
bottom of the sea (19°-35'N; 138°-43'E). She went deep as four depth charges
exploded around her and artfully dodged 49 others before surfacing to continue
the chase. She caught up with the remnants of the fleeing convoy the afternoon
of 5 June, and after nightfall let go a spread

4

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SHIPS NAMED SHARK

of six torpedoes which sank the 3,080-ton freighter TAMAHIME MARU and the
7,006-ton passenger-cargo ship TAKAOKA MARU (17°-37'N; 140°-32'E). An enemy
destroyer came down SHARK's torpedo tracks and the last four of more than
sixty underwater explosions straddled her for a violent shaking which caused
excessive vibrations of her port shaft. She surfaced near midnight but was
unable to catch up with the convoy. On the afternoon of 8 June she made
rendezvous with PINTADO (SS 387), PILOTFISH (SS 386) and TUNNY (SS 282),
passing all "wolf-pack" data to the last named submarine before she headed for
Midway. She arrived in port on 17 July for refit and cleared Midway on 10
July 1944 to conduct her second war patrol in waters off the Volcano and Bonin
Islands.

Four torpedoes missed their mark as an enemy convoy made a sharp "zig"
away from course on 19 July 1944 and SHARK was held down by a destroyer while
the convoy escaped in the darkness. About three hours before midnight of 1
August she surfaced for an end-around and lay in wait dead ahead of an enemy
convoy. As she dived for periscope approach she aroused three escorts and
took evasive tactics to escape the notice of their sound searching, which
continued until the morning hours of 2 August 1944. That afternoon she set
course for Iwo Jima where she was to take lifeguard station in support of
fast carrier airstrikes. On the afternoon of 4 August 1944 she rescued two
men of a crashed LEXINGTON torpedo-bomber from a rubber boat and took a ring-
side seat for the last carrier strike on Iwo Jima before she was
again on lifeguard station 10 August as Army Liberator Bombers hit Iwo Jima.
She dived to avoid bombing and gun strafing that day and photographed the
scrap pile of wrecked enemy planes on Iwo Jima where bull-dozers were clearing
the bombed-out airstrip. She terminated her lifeguard duties on 19 August
and touched at Midway (24-25 August) before her arrival in Pearl Harbor on
29 August 1944 with her valuable reconnaissance photographs and aviator guests.

SHARK was lost during her third war patrol, probably in the vicinity of
Luzon Strait, 24 October 1944. Forming a "wolf-pack" with SEADRAGON (SS 194)
and BLACKFISH (SS 221), she had put to sea from Pearl Harbor on 23 September
1944 for waters off Saipan in the Marianas Islands. She couched in Saipan
on 3 October then passed through Luzon Strait to assist in covering an area
about midway between Hainan and the western end of Bashi Channel. After being
out-distanced by a fast convoy on 22 October, she flashed a message to
SEADRAGON (SS 194) on the 24th, that she was closing an enemy freighter. This
was the last word received from SHARK. She was presumably the victim of a
fierce counter-attack delivered by Japanese destroyers on that day.

SHARK (SS 314) was awarded one battle star for her war patrols in support
of the capture and occupation of the Marianas Islands.

The sixth SHARK (SS(N) 591) is under construction by the Newport News
Shipbuilding and Drydock Company of Newport News, Virginia. The nuclear-
powered submarine is scheduled to be launched in April 1960.

5

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[HANDWRITTEN: [FIRST WAR PATROL]]

SS174/A16-3
Serial S1-41

[STAMP: DECLASSIFIED]

From:
To :
Subject:

Enclosures:

1. UNITED STATES ASIATIC FLEET
SUBMARINE DIVISION 203

U. S. S. SHARK (SS174)
December 23, 1941

The Commanding Officer.
The Commander Submarines, ASIATIC FLEET.
U.S.S. SHARK - Report of Operations during
Period 9 - 21 December 1941.

(A) Patrol Report.
(B) Radio Log.

Subject report is submitted herewith.

[SIGNATURE: L. SHANE, Jr.]

[STAMP: DECLASSIFIED-ART. 0445]
BY [HANDWRITTEN: D/C/S/G/T]
DATE [HANDWRITTEN: 9/16/77]

— page 9 —
U.S.S. SHARK

Area - Enroute to Santa Cruz Harbor, Marinduque, P.I. and re-
turn.

Zone time kept - Minus 8

A. On 9 December 1941 proceeded to Mariveles Har-
bor and anchored between the mine fields, outside the submar-
ine net, one-half hour after sunset. At 1900 a large Army
searchlight was observed to be sending plain language signals
to a DD patrol off Corregidor telling her the names and times
of submarines leaving Manila Bay the night of 9
December.

At 2030 got underway and stood out of the minefield channel.
The buoys were illuminated by Army searchlight. Upon clear-
ing minefield channel proceeded directly to the VERDE ISLAND
PASSAGE at 12.5 knots on 2 main engines, passing two miles
inside of FORTUNE ISLAND and two miles outside of CAPE SANTI-
AGO.

At 0113, 10 December, when about three miles southeast of the
eastern end of MARICABAN ISLAND, sighted two ships bearing
to be DD's bearing 090°T. (approx.), just north of VERDE IS-
LAND. Submerged to 90 feet. Sound picked up screws of two
vessels, which passed to starboard and drew aft. At 0210 sur-
faced and continued north of VERDE ISLAND. At 0310 sighted an
object now believed to be a sailing vessel, close inshore,
one mile southeast of MALABRIGO POINT LIGHT. Submerged to 90
feet. Sound heard no screws. At 0350 surfaced and headed
on course 086 toward SAN ANDRES POINT, MARINDUQUE. Submerged
at 0515. Passed two miles north of SAN ANDRES POINT and head-
ed toward SANTA CRUZ LIGHT. Surfaced at dusk and anchored 800
yards from the light, with light bearing 290°T.

At 0354, 11 December, received message (underlined in red on
radio log) indicating that sixteen enemy transports were in
TABAYAS BAY and ordering an attack. Radio had difficulty in
receiving this message and experienced difficulty in copying
all traffic at this time. Could not decipher address, but as-
sumed it was intended for SHARK.

At 0420 got underway. Submerged at 0515. Proceeded directly
to a point 3½ miles south of PITOGO ISLAND, thence skirted
northwestern coast of TAYABAS BAY to BANTIGUI POINT, thence

-1-

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U.S.S. SHARK

direct to SAN ANDRES POINT. Surfaced at 1820. At 1820 sighted
a low flying plane, on course 300°T. with running lights on.
Sighted no vessels at all during this period. Returned to
SANTA CRUZ harbor and anchored.

At 1200, 12 December, sighted one plane approaching from
090°T. Submerged and lay on the bottom for forty-five minutes.
At 1400 coastal steamer, believed to be the CEBU, anchored off
eastern entrance to harbor. Gun crew was ordered to stand-by
below deck. Steamer got underway and headed west across TALA-
BAS BAY about 1500.

At 1430 sighted one PBY on course 300°T., altitude 2500 feet.
Did not dive.

At 1245, 13 December, a small steamer flying Philippine flag
stood in to harbor. Replied to hail that it was from BATANGAS,
"coming home". At 1400 hailed a native fisherman in a fish-
ing banca, and using the steward as an interpreter informed
him of the war. In answer to questions the fisherman stated
that there were no white people on Marinduque. Sent fisherman
man into the town to send out the Mayor. At 1630 a dilapidated
outboard motor boat stood out from the town bringing the
mayor and a retinue of fifteen. Several spoke excellent Eng-
lish. Obtained the following information from this group: (1)
There are two or three Japs in Marinduque, all now in the
BOAC jail. One, the owner of the gold (iron) mine, had a short
wave transmitter in his house as well as numerous maps. The
informants were vague about the nature of the maps. (2) There
is no diesel fuel on the island and very little gasoline.
SHARK gave the natives all the gasoline remaining on board,
about 110 gallons. (3) The only flat surfaces suitable for
landing fields are at present rice paddies. (This from the
Mayor). (4) Some fruit (bananas, limes, papayas), eggs and
chickens, eggs and pigs can be bought. (5) The only arms on
the island are a few .32 pistols in the possession of the
police and a very few rounds of ammunition. (6) The police
force is estimated at 10 to 20 men. (7) There is a radio to
LUCENA and a radio transmitter on the island. Location not
learned, but believed to be at BOAC. (8) A blackout is main-
tained, except for occasional open fires in the hills. (9)
There are a number of sailing boats and one or two motor boats
at SANTA CRUZ.

At 1700 sent a man in Mayor's boat to turn off SANTA CRUZ
LIGHT. This is an acetylene light and natives were instructed
as to manner of relighting it.

14 December - Nothing of interest.

-2-

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U.S.S. SHARK

15 December - 0745 One plane passed overhead, altitude 5000
feet, course 000°T. 1400 Small steamer "SANTA EMERENCIANA"
stood in to harbor. Replied to hail that she was from LUCENA
bound for various island ports. 1550 Sighted high winged,
single engined monoplane outside of east channel, flying low
and headed northwesterly. Submerged. 1620 Surfaced.

16 December - Nothing of interest.

17 December - Purchased eggs, chickens, fruit and dressed
pigs from natives. Sent laundry ashore.

18 December - 1105 Sighted 30 (?) heavy bombers overhead, al-
titude 15,000 - 20,000 feet, course 120°T. Submerged 1200.
Surfaced. 1310 Sighted many planes, very high, headed North-
west. Submerged. 1425 Surfaced.

19 December - 1852 Received Commander Submarines Asiatic Fleet's
dispatch directing SHARK to return to Manila, keeping
outside the 100 fathom curve North and West of SIMO BANKS,
and requiring acknowledgment. Received no reply to acknowledg-
ment on 8470 KCS. Tried 355 KCS and received no reply.

20 December - 0331 Underway for Manila. 0454 Submerged to 120
feet. Proceeded submerged to a point 1½ miles southeast of
MALABRIGO POINT. 1835 Surfaced and proceeded through VERDE IS-
LAND north passage. 2000 Sighted dark object near east end of
MALABRIGO ISLAND. Turned stern toward it. Identified object
as small island. Headed for CAPE SANTIAGO. 2200 Passed CAPE
SANTIAGO abeam to starboard, distant two miles.

21 December - 0005 Sighted CABRA ISLAND LIGHT. Passed 5 miles
west of six fathom spot in SIMO BANKS. Speed 15 knots, three
main engines on propulsion. 0120 Sighted CORREGIDOR LIGHT
distant about twenty-four miles. 0245 Sighted light believed
to be on outer buoy of minefield channel. 0250 Sighted vessel
with two stacks headed South. This vessel turned West, then
stopped and swung slowly North. 0250 Sighted very dim light
believed to be turning buoy. Could not make out this light
well enough to get a bearing. 0300 Stopped. Cut showed posit-
ion to be due South of the East edge of channel. Headed for
lighted buoy, then was able to make out boat illuminating
boat to come alongside. By this time boat was
within hailing distance. Hailed boat and was informed that he
was illuminating black outer buoy, and that turning buoy was
illuminated by another boat. Proceeded through channel and
anchored between minefields at 0345. 0515 Underway and pro-
ceeded into Manila Bay.

-3-

— page 12 —
U.S.S. SHARK

B.
Weather: Generally clear with scattered high
clouds. Two days of light intermitted rain while anchored
SANTA CRUZ. Wind average force 2.

C.
Tidal Information: Practically no tide or cur-
rent observed in SANTA CRUZ Harbor.

D.
Navigational Aids: During the night of 9-10
December the following lights were observed to be lighted:

1. Fortune Island
2. Cape Santiago
3. Escarcero Point
4. Malabrigo Point
5. Santa Cruz

Santa Cruz Light was extinguished the evening of 13 December
by the SHARK. During the night of 20-21 December, CABRA IS-
LAND LIGHT was the only navigational light sighted that was
burning.

E.
None sighted.

F.
Aircraft sighted: (Described in narrative).

1. One PBY - 1430, 12 December.
2. One high winged monoplane, single engine,
believed observation type. 1550, 15 Decem-
ber.
3. One single engined monoplane, also believed
observation type. 0745, 15 December.
4. 25-30 bombers with silver-colored under-
sides. Too high for further identification.
Sighted twice 18 December (At 1105 and 1310).
5. One unidentified plane flying low with run-
ning lights on. 1825, 11 December.

G.
No attacks made.

H.
No anti-submarine measures noted except air-
craft. Submerged on sighting aircraft during daylight at an-
chor.

I.
Major defects.

(a) Sparking engine exhausts. These present a ser-
ious hazard, as they are highly visible and occur at irregular

-4-

— page 13 —
U.S.S. SHARK

and unpredictable intervals at any engine loading. It is be-
lieved that sheet metal screens could be devised and welded
on the exhausts in such a manner as to throw the sparks into
the water.

(b) The ten pound blow line should be renewed at
the earliest opportunity. At present there are no
many sections of pipe are corroded almost completely through.
The ship can operate with sections of this line blank flanged
at the tanks as they corrode through.

J.

General Remarks:

(a) While at anchor in Santa Cruz Harbor, remained
flooded down with decks awash during daylight.

(b) Two tubes were kept flooded on two successive
nights. One Mk XIV torpedo afterbody was flooded partially.

-5-

— page 14 —
SHARK I* (SS 174)

After having transported Admiral Hart and other of-
ficials from Manila to Surabaya on her first patrol,
SHARK, commanded by Lt. Cdr. L. Shane, Jr., de-
parted on 5 January 1942 for her second war patrol.
She saw a torpedo, fired at her by an enemy submarine
on 6 January, miss.

In anticipation of a possible enemy attack at Ambon
(Amboina), ComSubAsiatic told SHARK to contact Dutch
submarines at the harbor entrance of that island. On
25 January, SHARK was advised that heavy air raids
on Ambon might indicate an enemy landing force moving
toward the island.

Two days later SHARK was ordered to take station
as part of a submarine group reconnoitering a major
enemy move south through Molukka passage. On 29
January, because another move toward Ambon was in-
dicated, SHARK was ordered to cover the passage to
the east of Lifoematola. The next day this was en-
larged to include the area to Bangka Passage. On 2
February SHARK reported she had been off Tifore Island and that she
had missed on one torpedo attack.

Five days later SHARK reported an empty enemy
cargo ship heading northeast. In answer to these mes-
sages, Surabaya pointed out that such transmissions
contained little information of use in appraising the
situation, and that they might very possibly reveal to
the enemy a position to avoid. No further messages
were received from SHARK.

She was told on 8 February to proceed to Makassar
Strait via the north coast of Celebes, and later was told
to report information. Nothing further was heard from
SHARK and on 7 March she was reported as presumed
lost.

A Japanese report of antisubmarine attacks available
now records at least three which might have been on
SHARK. One was east of Menado on northern Celebes
on 11 February 1942; the second was north of Kendari
on southeast Celebes on 17 February 1942; and the
third was east of Kendari on 21 February 1942.
Also, in 1944, a Japanese press release claimed that
an enemy subchaser rammed a U. S. submarine in
Manipa Strait in February 1942. No mention is made
of this attack in official Japanese reports, but their
reports are notoriously inaccurate and incomplete,
especially during the early part of the war. Since Dutch

L. Shane, Jr.

and English submarines were operating in the area pa-
trolled by SHARK, it is impossible at this time to de-
termine whether any or all of the above mentioned at-
tacks were survived by submarines operating with our
Asiatic Fleet.* Loss of SHARK to an enemy mine-
field is deemed improbable, since the enemy was on
the offensive at this time and would naturally hesitate
to lay mines in the path of his advance down the Strait
of Makassar. Thus indications point to the probability
of her loss through enemy depth charge attack;
however, the specific attack responsible for the loss
cannot be determined. The one off Menado is thought most likely, since SHARK had been
ordered to northern Celebes.

*-i.e. first in World War II. a very early submarine, A-7(SS-8), bore the name SHARK later in her career.

19

— page 15 —
U. S. S. SHARK (SS-174)

Name                     Rate                     Name                     Rate
BELLARD, Theodore A .... MM1                     MARKIN, Loran R F2
BLANCHARD, Walter R .... CTM                     McELROY, Rex E EM2
BOLTON, John A RM1                     McKINNEY, Kenneth E .... EM2
BRANNAN, Thomas L ...... S1                      MILLER, Robert F ....... F2
BYUS, Grady G., Jr ..... MM1                     MORAN, Arthur P CMM
CASSIDY, Earl W LTJG                    MORRIS, Fred J SM1
COOLEY, John P MM2                     MYER, Warren H MM2
CRAWFORD, Billy B ...... F3                      PECHACEK, Ermin J ...... SM2
CROFT, Albert E EM2                     PERKINS, Avery E ....... S1
DAWSON, William T ...... EM2                     PETTIT, Robert L ....... CMM
DENBY, Edwin, Jr ....... LTJG                    PHILABERT, Frank F ..... ENS
DILLON, Roscoe F., Jr. LTJG--XO                 PILGRAM, Walter E ...... CEM
EJAYPE, Paulino OffStd1                 POLIDORI, Bennie J ..... EM1
ESTES, Roland A EM1                     SANDMANN, Karl L ....... Y2
EVANS, Ferdinand A ..... MM2                     SCHMITT, Henry L ....... MM2
EVANS, Truman F TM1                     SHANE, Louis, Jr ....... LCDR--CO
FABRA, Agapito OffStd3                 SMITH, John H CEM
FARRELL, Fred H TM1                     SMITH, Thayne C TM2
FRUIT, Albert D MM1                     SPILMAN, Thomas P ...... RM3
GILMAN, Merrill R ...... CMM                     STRIEGLER, Herman F .... EM1
GLASS, Lawrence C ...... S1                      THEW, Richard R FC1
IVERSON, James A ....... F1                      TUBRE, Henry O S1
JEFFREYS, Romie L ...... CMM                     TUROCZY, John A SC1
JOHNSTON, James E ...... F2                      WARREN, Roland H ....... MM2
JONES, Clifford E ....... TM1                     WHITE, James K GM1
LESTER, Jesse A PhM2                    WORSHAM, John M TM3
LIDGERDING, William C .. RM2                     YANKS, Charles R ....... SM2
LOUGHLIN, Thomas P ..... TM2                     ZEORLIN, Harold TM2
LUND, Arnold R MM1

21

— page 16 —
UNITED STATES
SUBMARINE LOSSES

WORLD WAR II

Reissued with an Appendix of
Axis Submarine Losses, fully indexed,

by

Naval History Division
Office of the Chief of Naval Operations
Washington: 1963

— page 17 —
[STAMP: DECLASSIFIED - DOD DIR. 5200.8
of 27 Sep 58
BY [HANDWRITTEN: 92C] DATE [HANDWRITTEN: 9/16/71]]

SS314/A16-3
Serial 038

DECLASSIFIED

17 June 1944.

From: The Commanding Officer, U.S.S. SHARK (SS314).
To: The Commander-in-Chief, United States Fleet.
Via: (1) The Commander Submarine Division 61.
     (2) The Commander Task Group 17.5.
     (3) The Commander Submarine Force, U.S. Pacific Fleet.
     (4) The Commander-in-Chief, U.S. Pacific Fleet.

Subject: U.S.S. SHARK (SS314) - Report of War Patrol Number
         One.

Enclosure: (A) Subject Report.
           (B) Track Chart U.S.S. SHARK (SS314) from Period
               29 May to 9 June 1944. (ComSubPac only)

1. Enclosure (A), covering the first war patrol of this
vessel conducted in the area to the west of the Marianas Islands
during the period 16 May 1944 to 17 June 1944, is forwarded
herewith.

E. F. BLAKELY.

[HANDWRITTEN: FILMED]
[HANDWRITTEN: 80354]

— page 18 —
Subject: U.S.S. SHARK (SS314) - Report of First War Patrol.
(1) PROLOGUE:
The U.S.S. SHARK was commissioned at U.S. Submarine Base,
New London, Connecticut on 14 February 1944. Arrived at Pearl Harbor
24 April 1944. Post voyage repairs by U.S.S. HOLLAND 24 to 28 April
1944. Training period extended from 29 April to 12 May 1944. Con-
ducted sound test on 29 April 1944. Readiness for sea 16 May 1944.

16 May to 20 May 1944.
1330(V)/16 Underway from U.S. Submarine Base, Pearl Harbor, T.H. in
accordance with ComTask Force 17 Operation Order No.
166-44. In company with U.S.S. PINTADO and U.S.S.
LOTFISH as a coordinated attack group. C.O.T.C., Captain
L.R. BLIR, USN in PINTADO. Conducting daily dives and
drills.

20 May 1944.
0904(Y) Arrived Midway. Moored alongside U.S.S. COLT, pier 81.
Fueled ship. Received lub oil.
Post voyage repairs effected:
(1) Pulled after bearing on number two main motor.
Found the journal was bearing on only 20% of the bearing
surface. Spotted in bearing, and increased bearing
surface to 60%.
(2) Disassembled hull recirculating flapper valve, and
removed a bolt found jammed between flapper and seat.
Reseated the flapper.

21 May 1944.
0752(Y) Departed Midway.
0800(Y) Changed date to 22 May 1944.

22 May 1944.
0800(I) Temperature on number two main motor bearing rose to
170° under load of 80-90 on 4 main engines. Was necess-
ary to reduce turns to 240 RPM (16.5 knots) to cause
temperature to drop to 160°.

23 May 1944.
Number two main motor bearing still running hot. Maximum
speed reduced to 15 knots. Decided to pull ahead of
formation and pull bearing tonight.

2000(M) Stopped and pulled number two main motor bearing. Again
bearing only had a bearing surface of 20%. Spotted
bearing in.
-1-
[HANDWRITTEN: 2]

— page 23 —
Subject: U.S.S. GURNARD (SS164) - Report of First War Patrol.

2 June 1944.

0022 Received order from O.I.C. to change course to 045°T.,
     speed 17 knots to close convoy #3, the one the PILOTFISH
     was in contact with. Terminated business with convoy #2
     and commenced chasing convoy #3.

0544 Sighted PILOTFISH.

1044 Received orders from O.I.C. to form a scouting line
     bearing 175°T., scouting distance 20 miles.

1045 Sighted numerous oil drums and two life jackets.

1341 Received position of convoy from PILOTFISH.

1918 Sighted smoke bearing 211°T. (Ship contact #4. Convoy
     #3). Sent out contact report. Commenced closing at full
     speed.

2032 Made radar contact bearing 216°T., range 23,850 yards.
     Determined convoy to consist of at least five large ships
     zig zagging 20 degrees on either side of base course
     340°T., speed 8.5 knots.

2058 Made radar contact bearing 120°T., range 8600 yards.
     Identified as PILOTFISH.

2155 Reached position ahead of convoy. Convoy bore 168°T.,
     range 17,000 yards. Visibility was excellent with nearly
     full moon. Targets were plainly visible at 17,000 yards.

2205 With the convoy at a range of 17,000 yards, a leading
     escort closed to a range of 13,000 yards and seemed to
     be heading at the PILOTFISH which at this time bore 128°T.,
     range 10,000 yards, which was placed for on the starboard
     bow of the convoy. Dove and headed in toward convoy.

2211 Went to 350 feet and rigged for silent running, as
     constant sound bearings and increased speed of escort
     indicated he was headed for us. It is felt this escort
     was probably radar equipped and detected us at a range
     of 12,000 yards.

2229 Escort passed overhead and opened out astern.

2234 Heard nine explosions near by.

2251 Returned to periscope depth. In position ahead of convoy,
     generated range on T.D.C., 7000 yards. Nearest escort
     bore 164°T., angle on the bow 90° port changing to 30°
     port, range about 4000 yards.

[HANDWRITTEN: (13)]
                               -6-
                                                                 [HANDWRITTEN: 7]

— page 30 —
Subject: U.S.S. SHARK (SS314).- Report of First War Patrol.

1725 Reached a position on starboard flank of convoy, range
to convoy about 3000 yards. Convoy formation, of at
least six ships, was nearly the same as before, with
three columns of two freighters, slightly staggered, in
each column. Two escorts were patrolling on either
flank of the convoy and the destroyer was still out in
front. SHARK was between the two starboard escorts and
the starboard column of freighters. (See sketch under
attack data) Selected the second freighter in the
starboard column, which was larger than the leading
freighter, as target.

1728(0'-00") At a range of 2500 yards fired first of six torpedoes
from the bow tubes on a 56° starboard track with nearly
zero gyro angles. At the time of firing the stern
of the leading freighter was nearly overlapping the bow
of the target.

(0'-09") Fired second torpedo.
(0'-16") Fired third torpedo.
(0'-24") Fired fourth torpedo.
(0'-32") Fired fifth torpedo.
(0'-41") Fired sixth torpedo.

(1'-21") Heard and observed first torpedo hit on the starboard
quarter of the large freighter which broke him up aft.
Swung to look at the destroyer.

(1'-28") Heard second torpedo hit.

(1'-35") Heard third torpedo hit. Swung back to the target and
there was nothing left but his masts sticking out in
a swirl of water. It was unbelievable that a ship could
sink so fast. Took another sweep around in the
periscope.

(1'-44") Heard fourth torpedo hit the leading freighter.
(1'-49") Heard fifth torpedo hit the leading freighter.
(1'-55") Heard the sixth torpedo hit the leading freighter. The
destroyer was now heading straight for SHARK with a
bone in his teeth, so ordered 400 feet and rigged for
depth charge and silent running.

1732 First pattern of ten depth charges. Close!! Shook
SHARK up, but no damage. Again heard the distinctive
noises of a ship breaking up and sinking, even louder
[HANDWRITTEN: (20)] -13- 14

— page 36 —
CONFIDENTIAL

Subject: U.S.S. STURGEON (SS-14) - Report of First War Patrol.

(F) SHIP CONTACTS

NOTE: Contacts with U.S.S. PERCH, U.S.S. PILOTFISH, and U.S.S.
TURAY are not listed.

NO. | TIME      | LAT       | TYPE(s)   | EST.    | COURSE | EST.  | REMARKS
    | DATE      | LONG      |           | RANGE   | EST.   | SPEED |
    |           |           |           | (YARDS) |        |       |
----||||||-------|
1.  | 1915(K)   | 27-25.0 N | Convoy*   | 40,000  | 330    | 7     | Smoke
    | 31 May 14 | 141-52.0 E|           |         |        |       | Convoy
    |           |           |           |         |        |       | No. 2.
----||||||-------|
2.  | 2123(K)   | 27-44.5 N | Submarine | 8,000   | SJ     | Radar | U.S.S.
    | 31 May 14 | 141-35.0 E|           |         |        |       | SILVER-
    |           |           |           |         |        |       | SIDES.
----||||||-------|
3.  | 1125(K)   | 28-16.0 N | Convoy    | 40,000  | 260    | 7     | Smoke
    | 1 June 14 | 141-14.0 E|           |         |        |       | Convoy
    |           |           |           |         |        |       | No. 2
----||||||-------|
4.  | 1918(K)   | 29-30.0 N | Convoy**  | 40,000  | 340    | 8.5   | Smoke
    | 2 June 14 | 140-19.0 E|           |         |        |       | Convoy
    |           |           |           |         |        |       | No. 3.
    |           |           |           |         |        |       | Attack
    |           |           |           |         |        |       | No. 1.
----||||||-------|
5.  | 0518      | 21-11.0 N | Convoy    | 40,000  | 310    | 8.5   | Smoke
    | 3 June 14 | 138-07.0 E|           |         |        |       | Convoy
    |           |           |           |         |        |       | No. 3.
----||||||-------|
6.  | 1555      | 22-00.0 N | Convoy*** | 40,000  | 180    | 9     | Smoke
    | 3 June 138| 138-00.0 E|           |         |        |       | Convoy
    |           |           |           |         |        |       | No. 3.
    |           |           |           |         |        |       | Attack
    |           |           |           |         |        |       | No. 2.
----||||||-------|
7.  | 0530      | 18-16.0 N | Convoy    | 40,000  | 120    | 9     | Smoke
    | 5 June 138| 138-31.0 E|           |         |        |       | Convoy
    |           |           |           |         |        |       | No. 4.
    |           |           |           |         |        |       | Attack
    |           |           |           |         |        |       | No. 3
----||||||-------|
8.  | 0539      | 16-41.0 N | Convoy    | 40,000  | 090    | 9     | Smoke
    | 6 June 141| 141-26.0 E|           |         |        |       | Convoy
    |           |           |           |         |        |       | No. 4.
----||||||-------|
9.  | 1620      | 16-20.0 N | Convoy    | 40,000  | 090    | 9     | Smoke
    | 6 June 142| 142-27.0 E|           |         |        |       | Convoy
    |           |           |           |         |        |       | No. 4.
----||||||-------|
10. | 0817      | 17-50.0 N | Submarine | 25,000  | 050    | 15    | High
    | 8 June 139| 139-34.0 E|           |         |        |       | Peris-
    |           |           |           |         |        |       | cope
    |           |           |           |         |        |       | U.S.S.
    |           |           |           |         |        |       | BOWFIN.
----||||||-------|
11. | 1603      | 23-41.7 N | Submarine | 25,000  | 270    | 15    | High
    | 10 June 14| 146-20.5 E|           |         |        |       | Peris-
    |           |           |           |         |        |       | cope
    |           |           |           |         |        |       | U.S.S.
    |           |           |           |         |        |       | ALBACORE
----||||||-------|

[HANDWRITTEN: (26)]
-19-
[HANDWRITTEN: 20]

— page 45 —
CONFIDENTIAL
Subject: U.S.S. SHARK (SS 314) - Report of First War Patrol.
(H) ATTACK DATA (Continued)
U.S.S. SHARK (SS 314). TORPEDO ATTACK NO. 2. PATROL NO. 1.

Time: 1608(-10) Date: 4 June 1944. Lat: 19-35.0 N Long: 138-43.0E

TARGET AND DAMAGE INFLICTED

Description: The convoy of seven or eight ships were in three columns.
Two or three freighters in starboard column, two freight-
ers followed by a passenger freighter in the middle
column. Two freighters were in port column. Two
patrol type escorts were patrolling on the starboard bow, two
on the port bow of the convoy, and a fleet type
destroyer was patrolling between the middle and port
columns nearly in line with the leading ship of the
middle column. (See sketch below) Ship attacked was
a large troop loaded passenger freighter similar to
Tosan Maru. Contact was first made by listening, smoke,
followed later by sight contact through the periscope
while submerged. Visibility conditions were excellent.
Surface of water was slightly rippled.

Ship Sunk: One large troop loaded passenger freighter similar to
Tosan Maru, O 1203(J) revised page 8 (8066 tons).

Damage
determined
by: Observed and heard first torpedo hit port quarter of
target which seemed to disintegrate it. Heard
timed second, third, and fourth torpedoes to hit. Heard
ship break up and sink soon after.

Target: Draft 20ft., Course 190°T., Speed 9 kts., Range 1250.

OWN SHIP DATA

Speed: 3.1 kts. Course 320°T. Depth 65 ft. Angle 1° rise.

Position of SHARK relative to convoy at time of firing:

[HANDWRITTEN: AK]
[HANDWRITTEN: DD]
O
[HANDWRITTEN: SS]
[HANDWRITTEN: PC]

[HANDWRITTEN: -26-]

[HANDWRITTEN: (35)]
[HANDWRITTEN: 29]

— page 48 —
CONFIDENTIAL
Subject: U.S.S. SEAWOLF (SS-314) - Report of First War Patrol.
(A) ATTACK DATA (Continued).
U.S.S. SEAWOLF (SS-314). TORPEDO ATTACK NO. 3. PATROL NO. 1.

Time: 1726(-10) Date: 5 June 1944. Lat. 17-37.2 N Long: 140-32.3E

RESULT DATA - DAMAGE INFLICTED

Description: Same convoy as attack number 2 and in the same formation
of three columns except middle column consisted of
only two freighters. Two patrol type escorts were
still patrolling on the port bow and two on the
starboard bow of the convoy. The destroyer was
patrolling out ahead of the middle column. The
two ships attacked were a large freighter similar
to Goyo Maru and a medium unidentified freighter.
The ships were almost in an overlapping position
when firing was commenced. Contact was regained
after previous attack by sighting smoke. Ships
were first observed through the periscope from a
submerged position. Visibility was excellent.
Surface was slightly rippled.

Ships Sunk: One large freighter similar to Goyo Maru on page
78 of O.T.200(J) revised. (8500 tons)
One medium unidentified freighter. (5000 tons)

Damage Observed and heard the first torpedo hit the star-
determined board quarter of the large freighter. Heard and
by: timed the second and third torpedoes to hit this
ship. Observed this ship to sink in thirty seconds
after the first hit. Heard and timed the fourth,
fifth, and sixth torpedoes to hit the second ship.
Heard this ship explode and sink.

Target: TARGET NO. 1. - LARGE FREIGHTER.
Draft: 20ft., Course: 105°T., Speed: 9 kts., Range:2500yds.

TARGET NO. 2. - MEDIUM FREIGHTER.
Draft: 15ft., Course: 105°T., Speed: 9 kts., Range:2700yds.

OWN SHIP DATA

Speed: 2.8 kts. Course 340°T. Depth 63 ft. Angle 2° rise.

-31-

[HANDWRITTEN: (38)] [HANDWRITTEN: 32]

— page 48 —
CONFIDENTIAL
Subject: U.S.S. SEAWOLF (SS-314) - Report of First War Patrol.
(A) ATTACK DATA (Continued).
U.S.S. SEAWOLF (SS-314). TORPEDO ATTACK NO. 3. PATROL NO. 1.

Time: 1726(-10) Date: 5 June 1944. Lat. 17-37.2 N Long: 140-32.3E

RESULT DATA - DAMAGE INFLICTED

Description: Same convoy as attack number 2 and in the same formation
of three columns except middle column consisted of
only two freighters. Two patrol type escorts were
still patrolling on the port bow and two on the
starboard bow of the convoy. The destroyer was
patrolling out ahead of the middle column. The
two ships attacked were a large freighter similar
to Goyo Maru and a medium unidentified freighter.
The ships were almost in an overlapping position
when firing was commenced. Contact was regained
after previous attack by sighting smoke. Ships
were first observed through the periscope from a
submerged position. Visibility was excellent.
Surface was slightly rippled.

Ships Sunk: One large freighter similar to Goyo Maru on page
78 of O.T.200(J) revised. (8500 tons)
One medium unidentified freighter. (5000 tons)

Damage Observed and heard the first torpedo hit the star-
determined board quarter of the large freighter. Heard and
by: timed the second and third torpedoes to hit this
ship. Observed this ship to sink in thirty seconds
after the first hit. Heard and timed the fourth,
fifth, and sixth torpedoes to hit the second ship.
Heard this ship explode and sink.

Target: TARGET NO. 1. - LARGE FREIGHTER.
Draft: 20ft., Course: 105°T., Speed: 9 kts., Range:2500yds.

TARGET NO. 2. - MEDIUM FREIGHTER.
Draft: 15ft., Course: 105°T., Speed: 9 kts., Range:2700yds.

OWN SHIP DATA

Speed: 2.8 kts. Course 340°T. Depth 63 ft. Angle 2° rise.

-31-

[HANDWRITTEN: (38)] [HANDWRITTEN: 32]

— page 49 —
CONFIDENTIAL
Subject:
(1) SHARK (SS14) - Report of First War Patrol.
(Continued)

Position of SHARK relative to convoy at time of
firing: SIBO CELLAIN
[HANDWRITTEN: 1 AR]                                [HANDWRITTEN: REMAINDER OF]
[HANDWRITTEN: 2 N]                                [HANDWRITTEN: CONVOY OVER HERE]
[HANDWRITTEN: 3]
[HANDWRITTEN: 4 AR]
[HANDWRITTEN: 5]
[HANDWRITTEN: 6]
[HANDWRITTEN: 7]
[HANDWRITTEN: SHARK]
[HANDWRITTEN: 100]
FIRE CONTROL AND TORPEDO DATA

Type Attack: The next base course of convoy, which changed each day at
approximately sunrise and sunset, was determined while
making an end around to starboard and during the
period while patrolling ahead of convoy. Target speed
was known from previous track analysis. At
periscope observations during approach to convoy's track,
to check same without any need for speed on reciprocal
a range of about 30,000 yards ahead on reciprocal
which brought about constant helming.
The submarine closed target group on their base course. Convoy was zig zagging about
four to seven minute intervals but not on the approach was
on each zig leg as on the previous day. However
made on the leading ship in the middle column. However
towards the final stages of the approach it was necess-
ary to keep a small angle on the bow position to a
destroyer echoing out ahead of the middle column
and heading toward the starboard bow of the formation.
This combined with a zig to the left placed SHARK in a
firing position outboard of the starboard column. The
second ship, being the largest, and next was selected
as the first target. Six torpedoes were fired using the
3 - 2 - 1 spread system and spread 45° apart from
aft forward to cover a 600 foot target corrected for a
50° track at a run of 2200 yards. Check bearings were
given for torpedoes two and three which lagged the gen-
erated bearings. To check bearings were given for the
last three torpedoes fired, since the periscope was
being to determine the position of the escorts, and to
change was made in the T.D.C. set up. By firing the
last three torpedoes on the generated bearings plus the
spread which brought the torpedoes from aft forward,
three hits were made on the second target with a slight-
ly larger track angle and longer torpedo run.

[HANDWRITTEN: (39)]
-32-
[HANDWRITTEN: 33]

— page 49 —
CONFIDENTIAL
Subject: (1) U.S.S. SHARK (SS-314) - Report of First War Patrol.
(2) [UNCLEAR: (Continued)]

— page 56 —
CONFIDENTIAL
Subject: U.S.S. GURNARD (SS214) - Report of First War Patrol.

(2) RADIO (Continued).

     alerts proved the value of this system during the
     period of the convoy attacks it was felt that the
     intra-pack communications definitely "clicked". On
     several occasions Japanese operators were
     sending on the Wolf Pack frequencies but were heard to be
     had little or no effect as their jamming
     transmitter power seemed
     to be low. On 7 June 1944, one Japanese station sent
     and repeated a message consisting of a mixture of two
     letter signals, three letter signals, and standard Navy
     operating signals, indicating he had heard but not
     understood our code and system of alerts, indicators
     and receipts.

(3) RADAR.

     Both S.J. and S.D. radar operated highly satisfactorily.

1. S.J. Radar.

     (a) 25 May: Discovered "A" scope and "PPI" inoperative.
          Restored "A" scope by replacing 2J2 rectifier tube.
          Next day discovered a shorted connection on secondary
          of "PPI" transformer T1. Had evidential arcing across
          through transformer insulators. Replaced external wir-
          ing and put "PPI" back in operation. Suspect weakening
          or damage to 5000 volt side of transformer.

     (b) 28 May: A rectifier tube socket in "PPI" unit arced
          across from rivet heads to ground blowing F3 and F4
          putting "PPI" out of commission. Cleaned all rectifier
          socket. Used carbon tetrachloride and glyptol on
          socket. This restored "PPI" to normal operation. This
          was the second case of arcing across in "PPI". Suspect
          we are getting intermittent abnormally high voltages.

     (c) 30 May: Number 5F7 cathode ray tube burned out and
          was replaced from the spares. Apparently due to
          internal short.

     (d) 31 May: IFF antenna bracket discovered broken. In
          view of the carrying away of the VHT antenna on 30
          May, believe the structures require strengthening to
          withstand water forces submerged.

-39-
[HANDWRITTEN: 40]

— page 56 —
CONFIDENTIAL
Subject: U.S.S. GURNARD (SS214) - Report of First War Patrol.

(2) RADIO (Continued).

     alerts proved the value of this system during the
     period of the convoy attacks it was felt that the
     intra-pack communications definitely "clicked". On
     several occasions Japanese operators were
     sending on the Wolf Pack frequencies but were heard to be
     had little or no effect as their jamming
     transmitter power seemed
     to be low. On 7 June 1944, one Japanese station sent
     and repeated a message consisting of a mixture of two
     letter signals, three letter signals, and standard Navy
     operating signals, indicating he had heard but not
     understood our code and system of alerts, indicators
     and receipts.

(3) RADAR.

     Both S.J. and S.D. radar operated highly satisfactorily.

1. S.J. Radar.

     (a) 25 May: Discovered "A" scope and "PPI" inoperative.
          Restored "A" scope by replacing 2J2 rectifier tube.
          Next day discovered a shorted connection on secondary
          of "PPI" transformer T1. Had evidential arcing across
          through transformer insulators. Replaced external wir-
          ing and put "PPI" back in operation. Suspect weakening
          or damage to 5000 volt side of transformer.

     (b) 28 May: A rectifier tube socket in "PPI" unit arced
          across from rivet heads to ground blowing F3 and F4
          putting "PPI" out of commission. Cleaned all rectifier
          socket. Used carbon tetrachloride and glyptol on
          socket. This restored "PPI" to normal operation. This
          was the second case of arcing across in "PPI". Suspect
          we are getting intermittent abnormally high voltages.

     (c) 30 May: Number 5F7 cathode ray tube burned out and
          was replaced from the spares. Apparently due to
          internal short.

     (d) 31 May: IFF antenna bracket discovered broken. In
          view of the carrying away of the VHT antenna on 30
          May, believe the structures require strengthening to
          withstand water forces submerged.

-39-
[HANDWRITTEN: 40]

— page 58 —
CONFIDENTIAL
Subject: U.S.S. SHARK (SS314) - Report of First War Patrol.

(1) SOUND GEAR AND SOUND CONDITIONS.

1. JK-QC.
    On 4 June, following an attack, the forward torpedo room
    oil se were flooded from number six torpedo tube poppet
    valve. On taking an up angle this water grounded out
    both sound training motors while we were undergoing a
    depth charge attack. The JK-QC head was immediately manned
    by hand and bearings were sent to the conning tower by
    battle phones. At deep submergence however, the sound
    gear is very difficult to train in hand and its effect-
    iveness is greatly reduced. On surfacing, immediate
    steps were taken to dry out the training motors without
    success. The JK - QC motor was then replaced by the
    spare motor which necessitated boring new holes in the
    bed plate and shimming up to align the shafts. It is
    suggested that the training, sound, lathe, battery vent
    blower, and radar training motors be made interchange-
    able&spares provided. It is planned to install water-
    tight covers over the sound training motors in the
    coming refit period.

2. JP.
    When manned by experienced personnel the JP proved to
    be reliable and effective. No material casualties were
    encountered.

3.
    At deep submergence both sound heads are noisy and
    subject to extreme pressure binding. Redesigning to
    distribute the pressure over the entire roller race is
    believed necessary. The port head is metal to metal
    hammer when the direction of rotation is changed due
    apparently to play in the training gear, while the
    starboard head binds so badly at one point that it is
    impossible to train past this point. It is believed
    that the noise of operating the sound gear enabled
    the escorts to make sound contact on us on at least
    one occasion. The steel caps installed over the roller
    races by the U.S.S. [UNCLEAR: OLIVER] stood up very
    well and are effective emergency measure to prevent the drift
    stop rollers from chewing up the roller races.

4.
    Sound conditions were generally good throughout this
    area.

-41-

[HANDWRITTEN: (48)]
[HANDWRITTEN: 42]

— page 64 —
SUBMARINE DIVISION SIXTY-ONE (vp)
Care of Fleet Post Office,
San Francisco, California,
19 June 1944.

FB5-61/A16-3
Serial: 087

FIRST INDORSEMENT to
U.S.S. SHARK Report of
War Patrol No. One.

From: The Commander Submarine Division SIXTY-ONE.
To : The Commander-in-Chief, United States Fleet.
Via : (1) The Commander Submarine Force, Pacific Fleet,
Subordinate Command, Navy No. 1504.
(2) The Commander Submarine Force, Pacific Fleet.
(3) The Commander-in-Chief, U.S. Pacific Fleet.

Subject: U.S.S. SHARK (SS314) - Report of War Patrol Number ONE.

1. The first war patrol of the SHARK was also the first for her
commanding officer as such. The duration of the patrol was thirty-two (32) days
of which eleven (11) days were spent in the assigned area to westward of the
MARIANAS. Area coverage was excellent. Patrol was terminated by special order
due to damage to port shaft.

2. The SHARK formed part of a coordinated attack group including the
PINTADO and PILOTFISH, all under the tactical command of Captain L.N. Blair, USN.
The mutual exchange of information among the units aided greatly in developing
contacts.

3. The SHARK executed three brilliant and aggressive attacks firing
a total of fourteen torpedoes for fourteen hits.

Attack Number One was a night periscope attack on a convoy of
five large ships with at least three escorts. A four torpedo spread was fired at
a large tanker on 65° port track at a range of 1900 yards. One torpedo was seen
to hit and two others were heard and timed. Target was seen to break up aft with
mainmast toppling and later the characteristic breaking up noises of a ship sinking
were heard. The fourth torpedo was heard and timed to hit an AP, the stern of
which was overlapping the tanker's bow when torpedoes were fired.

Attack Number Two was a day periscope attack followed a long chase
of a convoy consisting of some eight ships with five escorts. In order to gain
attack position SHARK submerged ahead of the convoy, passed an escorting destroyer
160 yards abeam, and fired four torpedoes at a large passenger freighter, range
1200 yards. This ship was loaded with landing force equipment and troops. First
torpedo was observed to hit with an accompanying disintegration of the target.
Depth control was lost momentarily as three more timed hits were noted. SHARK
went deep to avoid approaching escorts and during the ensuing depth charging loud
and distinctive breaking up noises were heard in the direction of the target.

[HANDWRITTEN: (5)]
-1-
[HANDWRITTEN: 48]

— page 64 —
SUBMARINE DIVISION SIXTY-ONE (vp)
Care of Fleet Post Office,
San Francisco, California,
19 June 1944.

FB5-61/A16-3
Serial: 087

FIRST INDORSEMENT to
U.S.S. SHARK Report of
War Patrol No. One.

From: The Commander Submarine Division SIXTY-ONE.
To : The Commander-in-Chief, United States Fleet.
Via : (1) The Commander Submarine Force, Pacific Fleet,
Subordinate Command, Navy No. 1504.
(2) The Commander Submarine Force, Pacific Fleet.
(3) The Commander-in-Chief, U.S. Pacific Fleet.

Subject: U.S.S. SHARK (SS314) - Report of War Patrol Number ONE.

1. The first war patrol of the SHARK was also the first for her
commanding officer as such. The duration of the patrol was thirty-two (32) days
of which eleven (11) days were spent in the assigned area to westward of the
MARIANAS. Area coverage was excellent. Patrol was terminated by special order
due to damage to port shaft.

2. The SHARK formed part of a coordinated attack group including the
PINTADO and PILOTFISH, all under the tactical command of Captain L.N. Blair, USN.
The mutual exchange of information among the units aided greatly in developing
contacts.

3. The SHARK executed three brilliant and aggressive attacks firing
a total of fourteen torpedoes for fourteen hits.

Attack Number One was a night periscope attack on a convoy of
five large ships with at least three escorts. A four torpedo spread was fired at
a large tanker on 65° port track at a range of 1900 yards. One torpedo was seen
to hit and two others were heard and timed. Target was seen to break up aft with
mainmast toppling and later the characteristic breaking up noises of a ship sinking
were heard. The fourth torpedo was heard and timed to hit an AP, the stern of
which was overlapping the tanker's bow when torpedoes were fired.

Attack Number Two was a day periscope attack followed a long chase
of a convoy consisting of some eight ships with five escorts. In order to gain
attack position SHARK submerged ahead of the convoy, passed an escorting destroyer
160 yards abeam, and fired four torpedoes at a large passenger freighter, range
1200 yards. This ship was loaded with landing force equipment and troops. First
torpedo was observed to hit with an accompanying disintegration of the target.
Depth control was lost momentarily as three more timed hits were noted. SHARK
went deep to avoid approaching escorts and during the ensuing depth charging loud
and distinctive breaking up noises were heard in the direction of the target.

[HANDWRITTEN: (5)]
-1-
[HANDWRITTEN: 48]

— page 65 —
(vp)

SUBMARINE DIVISION SIXTY-ONE
Care of Fleet Post Office,
San Francisco, California,
19 June 1944.

FB5-61/A16-3
Serial: 087

Subject: U.S.S. SHARK (SS314) - Report of War Patrol Number ONE.

3. Attack Number Three was a day periscope attack on the same convoy
as that of attack number two. At a range of 2500 yards SHARK fired a six torpedo
spread at the second of two overlapping freighters, the spread being selected
to cover a 600 foot target. Observed and heard first torpedo hit the starboard
quarter of the target. Heard and timed two more hits in this ship within
thirty seconds of first hit. Heard and timed last three tor-
pedoes to hit first ship in column. In the ensuing counter attack, SHARK went deep
and observation of second target was not possible but breaking up noises on target
bearing were clear and distinct.

4. The health and morale of officers and crew on return from patrol
were excellent. The material condition is very good. The cause of the port shaft
noise will be investigated and corrected during the forthcoming docking and refit.

5. The Commanding Officer, Officers and Crew are congratulated on this
outstanding first patrol. It is recommended that the following damage be assessed:

SUNK                                TONS
One AO, large (EU)                  10,000 (attack No. 1)
One AK (passenger freighter)(EC)    8,700 (attack No. 2)
  (Similar to TOSAN MARU)
One AK, large (EC)                  8,500 (attack No. 3)
  (Similar to GOYO MARU)
One AK, medium (EU)                 4,000 (attack No. 3)

DAMAGED                             TONS
One AK, medium (EC)                 5,600 (attack No. 1)
  (Similar to SYOAN MARU)

[SIGNATURE: W. L. Hoffheins]
W. L. HOFFHEINS.

Copy to:
CO USS SHARK

[HANDWRITTEN: (6)]
-2-
[HANDWRITTEN: 49]

— page 66 —
A16-3
COMMANDER SUBMARINE FORCE, PACIFIC FLEET,
SUBORDINATE COMMAND, NAVY NO. 1584.
Serial No. 0108 Care of Fleet Post Office,
San Francisco, California,
19 June 1944.

SECOND ENDORSEMENT to
U.S.S. SHARK (SS314) Report of
War Patrol No. One.

From: The Commander Submarine Force, Pacific Fleet,
Subordinate Command, Navy No. 1584.
To : The Commander-in-Chief, U.S. Pacific Fleet.
Via : (1) The Commander Submarine Force, Pacific Fleet.
(2) The Commander-in-Chief, U.S. Pacific Fleet.
Subject: U.S.S. SHARK (SS314) - Report of War Patrol Number
ONE.

1. Forwarded, concurring in the remarks contained in
the first endorsement. The excellent torpedo performance is noted
and reflects credit on maintenance personnel as well as the Command-
ing Officer and control party.

2. All hands in SHARK are heartily congratulated upon
the completion of this outstanding first patrol.

[SIGNATURE: C. D. Edmunds]
C. D. EDMUNDS.

[HANDWRITTEN: (4)]
[HANDWRITTEN: 50]

— page 66 —
A16-3
Serial No. 0108

COMMANDER SUBMARINE FORCE, PACIFIC FLEET,
SUBORDINATE COMMAND, NAVY NO. 1584.

Care of Fleet Post Office,
San Francisco, California,
19 June 1944.

SECOND ENDORSEMENT to
U.S.S. SHARK Report of
War Patrol No. One.

From: The Commander Submarine Force, Pacific Fleet,
Subordinate Command, Navy No. 1584.
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. SHARK (SS314) - Report of War Patrol Number
ONE.

1.
Forwarded, concurring in the remarks contained in
the first endorsement. The excellent torpedo performance is noted
and reflects credit on maintenance personnel as well as the Command-
ing Officer and control party.

2.
All hands in SHARK are heartily congratulated upon
the completion of this outstanding first patrol.

[SIGNATURE: C. D. Edmunds]
C. D. EDMUNDS.

[HANDWRITTEN: (4)]
[HANDWRITTEN: 50]

— page 67 —
E MARINE FORCE 7 [STAMP: F253] [OVERWRITING: 02597] FLEET
hch
FF12-10/A16-3(15)/(10)
Serial 01309
Care of Fleet Post Office,
San Francisco, California,
27 June 1944.

THIRD ENDORSEMENT to
SHARK Report of
First War Patrol.
NOTE: THIS REPORT WILL BE
DESTROYED PRIOR TO
ENTERING PATROL AREA.

COMSUBSPAC PATROL REPORT NO. 459.
U.S.S. SHARK - FIRST 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. SHARK (SS314) - Report of First War Patrol.
(16 May to 17 June 1944).

1. The first war patrol of the SHARK was the first for the
Commanding Officer as such. The patrol was conducted in waters West
of the Larian Islands. The SHARK along with the U.S.S. PINTADO
(SS387) and the U.S.S. PILOTFISH (SS386) operated as a group under the
command of Captain L. N. Blair, U.S. Navy.

2. Three convoys were contacted and three brilliant and
aggressive attacks delivered. The proficiency of the SHARK in torpedo
fire control and maintenance is best told by her remarkable record of
14 hits for 14 torpedoes fired. Determination of the highest type
was shown throughout this splendid patrol.

3. This patrol is designated as "Successful" for Combat
Insignia Award.

4. The Commander Submarine Force, Pacific Fleet, congratu-
lates the Commanding Officer, officers, and crew of the SHARK for this
outstanding and highly successful first patrol which is such a fitting
revenge for the loss of her namesake. The SHARK is credited with
having inflicted the following damage upon the enemy during this
patrol:

S U N K

1 - Tanker (class unknown) - 10,000 tons (Attack No. 1)
1 - Passenger Freighter (similar - 8,700 tons (Attack No. 3)
TOSAN MARU)
1 - Freighter (similar GOYO MARU) - 8,500 tons (Attack No. 3)
1 - Freighter (class unknown) - 5,000 tons (Attack No. 3)
TOTAL - 32,200 tons

D A M A G E D

1 - Freighter (similar SYOAN MARU) - 5,600 tons (Attack No. 1)
[STAMP: FILMED] GRAND TOTAL - 37,800 tons

(2) Distribution and authentication
on following page. - 1 - C. A. LOCKWOOD, Jr.
[HANDWRITTEN: 51]

— page 67 —
E MARINE FORCE 7 [STAMP: F253] [OVERWRITING: 02597] FLEET
hch
FF12-10/A16-3(15)/(10)
Serial 01309
Care of Fleet Post Office,
San Francisco, California,
27 June 1944.

THIRD ENDORSEMENT to
SHARK Report of
First War Patrol.
NOTE: THIS REPORT WILL BE
DESTROYED PRIOR TO
ENTERING PATROL AREA.

COMSUBSPAC PATROL REPORT NO. 459.
U.S.S. SHARK - FIRST 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. SHARK (SS314) - Report of First War Patrol.
(16 May to 17 June 1944).

1. The first war patrol of the SHARK was the first for the
Commanding Officer as such. The patrol was conducted in waters West
of the Larian Islands. The SHARK along with the U.S.S. PINTADO
(SS387) and the U.S.S. PILOTFISH (SS386) operated as a group under the
command of Captain L. N. Blair, U.S. Navy.

2. Three convoys were contacted and three brilliant and
aggressive attacks delivered. The proficiency of the SHARK in torpedo
fire control and maintenance is best told by her remarkable record of
14 hits for 14 torpedoes fired. Determination of the highest type
was shown throughout this splendid patrol.

3. This patrol is designated as "Successful" for Combat
Insignia Award.

4. The Commander Submarine Force, Pacific Fleet, congratu-
lates the Commanding Officer, officers, and crew of the SHARK for this
outstanding and highly successful first patrol which is such a fitting
revenge for the loss of her namesake. The SHARK is credited with
having inflicted the following damage upon the enemy during this
patrol:

S U N K

1 - Tanker (class unknown) - 10,000 tons (Attack No. 1)
1 - Passenger Freighter (similar - 8,700 tons (Attack No. 3)
TOSAN MARU)
1 - Freighter (similar GOYO MARU) - 8,500 tons (Attack No. 3)
1 - Freighter (class unknown) - 5,000 tons (Attack No. 3)
TOTAL - 32,200 tons

D A M A G E D

1 - Freighter (similar SYOAN MARU) - 5,600 tons (Attack No. 1)
[STAMP: FILMED] GRAND TOTAL - 37,800 tons

(2) Distribution and authentication
on following page. - 1 - C. A. LOCKWOOD, Jr.
[HANDWRITTEN: 51]

— page 68 —
[FADED TYPED: 3020 T]

hch

FF12-10/A16-3(15)/(16)
Serial 01309

SUBMARINE FORCE, PACIFIC FLEET
Care of Fleet Post Office,
San Francisco, California,
27 June 1944.

CONFIDENTIAL
THIRD INDORSEMENT to
SHARK Report of
First War Patrol.

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

COMSUBSPAC PATROL REPORT NO. 459.
U.S.S. SHARK - FIRST WAR PATROL.

Subject: U.S.S. SHARK (SS314) - Report of First War Patrol.
(16 May to 17 June 1944).

— page 69 —
SS314/A16-3
Seri 1 041
DECLASSIFIED

DECLASSIFIED ART. 0445, OPNAVINST [HANDWRITTEN: 5510.1C]
BY [HANDWRITTEN: t/c95A] DATE [HANDWRITTEN: 9/16/70]

29 August 1944.

From: The Commanding Officer, U.S.S. SHARK (SS314).
To: The Commander-in-Chief, United States Fleet.
Via: (1) The Commander Submarine Division 222.
(2) The Commander Submarine Squadron 22.
(3) The Commander Submarine Force, U.S. Pacific Fleet.
(4) The Commander-in-Chief, U.S. Pacific Fleet.

Subject: U.S.S. SHARK (SS314) - Report of War Patrol Number Two.

Enclosure: (A) Subject Report.
(B) Track Chart U.S.S. SHARK (SS314) from Period
18 July 1944 to 17 August 1944. (ComSubPac only)

1. Enclosure (A), covering the second war patrol of this
vessel conducted in the area surrounding the Bonin and Volcano
Islands during the period 10 July 1944 to 29 August 1944, is
forwarded herewith.

E.N. BLAKELY.

[HANDWRITTEN: FILMED]
[HANDWRITTEN: 87950]

— page 69 —
SS314/A16-3
Seri 1 041
DECLASSIFIED

DECLASSIFIED ART. 0445, OPNAVINST [HANDWRITTEN: 5510.1C]
BY [HANDWRITTEN: t/c95A] DATE [HANDWRITTEN: 9/16/70]

29 August 1944.

From: The Commanding Officer, U.S.S. SHARK (SS314).
To: The Commander-in-Chief, United States Fleet.
Via: (1) The Commander Submarine Division 222.
(2) The Commander Submarine Squadron 22.
(3) The Commander Submarine Force, U.S. Pacific Fleet.
(4) The Commander-in-Chief, U.S. Pacific Fleet.

Subject: U.S.S. SHARK (SS314) - Report of War Patrol Number Two.

Enclosure: (A) Subject Report.
(B) Track Chart U.S.S. SHARK (SS314) from Period
18 July 1944 to 17 August 1944. (ComSubPac only)

1. Enclosure (A), covering the second war patrol of this
vessel conducted in the area surrounding the Bonin and Volcano
Islands during the period 10 July 1944 to 29 August 1944, is
forwarded herewith.

E.N. BLAKELY.

[HANDWRITTEN: FILMED]
[HANDWRITTEN: 87950]

— page 78 —
Subject: U.S.S. SHARK (SS314) - Report of Second War Patrol.

1/16 Surfaced and continued chase. Smoke still in sight.

1/23 Made SJ radar contact on convoy, bearing 095°T., range
     22,000 yards. Determined convoy to consist of 10 - 12
     ships, zig-zagging about 40° either side of base course
     100°T., speed 9 knots.

2116 In position dead ahead of convoy with convoy bearing
     340°T., range 15,000 yards. Took three quarter full with
     three ships visible at 15,000 yards. Dove to convoy of
     convoy's track and headed in. With range 12,000 yards and
     12,000 yards and nearest escort at 9600 yards, went to
     periscope depth. Could just barely see convoy through
     periscope. Soon went behind a cloud and convoy became
     increasingly more difficult to see. Just before diving
     to periscope depth the convoy came to a new zig leg of
     200°T. Which indicated, from its position, 18 miles
     bearing 030°T. from the northern tip of the 100 fathom
     curve surrounding the IZU O SHIMA RETTO, that it might be
     changing base course to pass down the westward side of
     the islands instead of the eastward side. Was closing
     track based on a course of 200°T. at full speed when it
     was noted by change of sound bearing that the base
     course had changed back to the left. This was not
     detected soon enough because of the inability to see the
     targets clearly through the periscope. When the
     targets could be seen, SHARK was about 5,000 yards out
     on the starboard beam of the formation. This was either
     a very clever or a fortunate maneuver on the part of the
     convoy commander. The new base course was about 140°T.
     Attempted to close the track at full speed and, in so
     doing, aroused the suspicion of three escorts who left
     the convoy and headed at SHARK. Continuing to try to
     close convoy but could not reach a firing position. The
     three escorts surrounded SHARK and commenced a sound
     search which did not end until 0100. It is hard to
     understand why they dropped no depth charges as all
     three were bouncing pings off of us. We did have a
     favorable temperature gradient, however.

2 August 1944.

0117 Surfaced and commenced chase at full speed. Sent out a
     second contact report in the hopes that the COMA can
     intercept the convoy from the south.

0225 Made radar contact on convoy bearing 174°T., range
     25,000 yards. Commenced another end around to try to
     get between convoy and CHICHI JIMA.

-9-

— page 78 —
Subject: U.S.S. SHARK (SS314) - Report of Second War Patrol.

1/16 Surfaced and continued chase. Smoke still in sight.

1/23 Made SJ radar contact on convoy, bearing 095°T., range
     22,000 yards. Determined convoy to consist of 10 - 12
     ships, zig-zagging about 40° either side of base course
     100°T., speed 9 knots.

2116 In position dead ahead of convoy with convoy bearing
     340°T., range 15,000 yards. Took three quarter full with
     three ships visible at 15,000 yards. Dove to convoy of
     convoy's track and headed in. With range 12,000 yards and
     12,000 yards and nearest escort at 9600 yards, went to
     periscope depth. Could just barely see convoy through
     periscope. Soon went behind a cloud and convoy became
     increasingly more difficult to see. Just before diving
     to periscope depth the convoy came to a new zig leg of
     200°T. Which indicated, from its position, 18 miles
     bearing 030°T. from the northern tip of the 100 fathom
     curve surrounding the IZU O SHIMA RETTO, that it might be
     changing base course to pass down the westward side of
     the islands instead of the eastward side. Was closing
     track based on a course of 200°T. at full speed when it
     was noted by change of sound bearing that the base
     course had changed back to the left. This was not
     detected soon enough because of the inability to see the
     targets clearly through the periscope. When the
     targets could be seen, SHARK was about 5,000 yards out
     on the starboard beam of the formation. This was either
     a very clever or a fortunate maneuver on the part of the
     convoy commander. The new base course was about 140°T.
     Attempted to close the track at full speed and, in so
     doing, aroused the suspicion of three escorts who left
     the convoy and headed at SHARK. Continuing to try to
     close convoy but could not reach a firing position. The
     three escorts surrounded SHARK and commenced a sound
     search which did not end until 0100. It is hard to
     understand why they dropped no depth charges as all
     three were bouncing pings off of us. We did have a
     favorable temperature gradient, however.

2 August 1944.

0117 Surfaced and commenced chase at full speed. Sent out a
     second contact report in the hopes that the COMA can
     intercept the convoy from the south.

0225 Made radar contact on convoy bearing 174°T., range
     25,000 yards. Commenced another end around to try to
     get between convoy and CHICHI JIMA.

-9-

— page 81 —
Subject: U.S.S. SHARK (SS314) - Report of Second War Patrol.

Island.

1250 Observed pilots zooming a position to the south. Headed
     for this position.

1330 Sighted two men in a rubber boat bearing 190°T., distance
     4 miles.

1350 Rescued Ensign W.S. EBERSON, A-V(N), USNR, pilot, and
     A.J. GARVEY, AR2c, USNR, from VB19 shot down off U.S.S.
     LEXINGTON. Neither man injured. During the rescue had
     a cover of 15 friendly planes; quite a comforting feel-
     ing. Unable to rescue rubber boat, so sank it with
     Tommy Gun. The next time we pick up anyone in a heavy
     sea we are going to have a cargo net we can rig.

1350-1605 Patrolled a position 6 - 15 miles to northwest of I O
     JIMA, with a fighter cover of two planes overhead.

1605 Had a ringside seat for the 1st carrier strike of the
     day. Observed anti-aircraft fire over I O JIMA, and the
     burst of many bombs from our planes. No planes were shot
     down so retired toward the northwest.

1700 Fighter cover departed.

                                5 August 1944.

     Wind and sea abated to force 3 during night.

0330 Commenced patrol on station 20 miles northwest of I O
     JIMA.

0340 Sighted an unidentified plane bearing 175°T., distance
     about 6 miles. Did not trigger as friendly. (Plane
     told SHARK over VHF that he was friendly, so surfaced
     immediately. Planes MUST leave their IFF on when working
     with submarines. Two friendly fighters were now overhead.
     They reported there would be no activity in our area
     today but remained overhead as a light cover.

1600 Fighter cover departed.

1700 Received message that Liberator was down in possible
     position to east of SHARK. Commenced searching to east.

1717 Sighted a JAP Betty type plane bearing 100°T., distance
     6 miles. (Plane contact #15). Dove.

                                -12-

— page 92 —
Subject: U.S.S. SHARK (SS314) - Report of Second War Patrol.
(F) ALL CONTACTS (ALL TIMES ITEM)

| NO. | TIME | DATE | LAT | TYPE(S) | INITIAL | EST | REMARKS |
|---|---|---|---|---|---|---|---|
| | | | LONG. | | RANGE | COURSE HOW | |
| | | | | | (YARDS) | SPEED CON- | |
| | | | | | | TACK | |
| 1. | 0757 | 18 July | 26-52N | 1 TRAWLER | 20,000 | 020°T | PER- |
| | | | 141-24E | or | | 6-8 | ISCOPE |
| | | | | Large SAMPAN | | | |
| 2. | 1302 | 19 July | 27-06N | Convoy Consisted | 30,000 | 105°T | Attack #1 |
| | | | 141-40E | of 1 M; 1 DD; 1 | | 5.5 | PER. Convoy |
| | | | | TRAWLER; 3 PC. | | | initially |
| | | | | | | | attacked |
| | | | | | | | by FLAIO |
| | | | | | | | later by |
| | | | | | | | COBIA. |
| | | | | | | | 1 hit in |
| | | | | | | | Freighter |
| | | | | | | | identif- |
| | | | | | | | ied as |
| | | | | | | | HINODE |
| | | | | | | | Maru No. |
| | | | | | | | 18. |
| 3. | 0332 | 26 July | 27-53.0N | 1 Unid. DD | 12,500 | 085-115 | SJ | Attack |
| | | | 141-01.5E | 1 Unid. Ship | | 7.5 | Radar | #2. | Against | Unid DD | Missed | with 4 | Torp. |
| 4. | 1428 | 1 Aug. | 28-53.5N | 2 SAMPANS | 6000 | 340 | PER. |
| | | | 141-42.5E | | | 6 | |
| 5. | 1535 | 2 Aug. | 28-54N | Convoy 10-12 | 40,000 | 160 | PER. | Made end |
| | | | 141-40E | ships. | | 9 | | around run | on convoy. | Got by in | moonlit | periscope | approach. |
| 6. | 1210 | 4 Aug. | JUST NORTH | 2 SAMPANS | 16,000 | 000 | Sight | Driven away |
| | | | OF IWO | | | 8 | | from IWO |
| | | | JIMA | | | | | JIMA by | planes. |
| 7. | 2335 | 11 Aug. | 25-20N | SS | 11,100 | 180 | SJ | USS GATO |
| | | | 141-45E | | | 12 | RADAR | |
| 8. | 0045 | 19 Aug. | 29-00N | SS | 10,000 | 180 | SJ | USS |
| | | | 147-40E | | | 15 | RADAR | STERLET |

— page 96 —
subject:
U.S.S. SHARK (SS314) - Report of Second War Patrol.
1. subject:
U.S.S. SHARK (SS314) - Report of Second War Patrol.

The user wants me to transcribe all text from the image. I need to be careful with faded text and maintain the structure.

Here's a plan:
1. Start with the "subject" line.
2. Transcribe the main table, row by row, column by column.
3. Pay close attention to numbers, coordinates, and specific terms.
4. Note any unclear text.
5. Transcribe the final note and page number.

Let's go through it.

**subject:**
U.S.S. SHARK (SS314) - Report of Second War Patrol.

**Table Structure:**

|             | 16      | 17      | 18      | 19      | 20      |
|||||||
| Date        | 8-5     | 8-5     | 8-6     | 8-6     | 8-7     |
| Time (Zone) (-9) | 1750    | 2300    | 0518    | 1217    | 0125    |
| Position: Lat. | 25-05 N | 25-15 N | 25-07 N | 24-33 N | 25-24 N |
|            Long. | 141-18 E | 142-18 E | 141-08 E | 141-00 E | 140-56 E |
| Speed       | 15      | 15      | 15      | 15      | 15      |
| Course      | 090     | 180     | 260     | 180     | 000     |
| Trim        | SURF    | SURF    | SURF    | SURF    | SURF    |
| Minutes since last SD Radar search | 2       | 1       | 0       | 2       | 6 Hrs.  |
| Number      | 1       | 1       | 1       | 2       | 1       |
| Type        | Zeke    | UNK     | UNK     | Zeke    | UNK     |
| Probable Mission | H       | PAT     | H       | H       | H       |
| How Contacted | Sight   | Sight   | SD      | Sight   | Sight   |
| Initial Range | 6 Mile  | 5 Mile  | 12 Mile | 4 Mile  | 5 Mile  |
| Elevation Angle | 30°     | 4°      | -       | 2°      | 10°     |
| Range & Bearing of Plane when it was detected | ND      | ND      | ND      | 270°    | ND      |
|             |         |         |         | 6 Mile  |         |
| Submarine   |         |         |         |         |         |
| (State (Beaufort) | 3       | 3       | 2       | 2       | 2       |
| (Direction) (Rel) | 160     | 160     | 160     | 160     | 160     |
| Visibility (Miles) | 15      | 10      | 20      | 20      | 15      |
| Clouds: (Height in Ft. | 3000    | 3000    | 5000    | 6000    | 6000    |
| (Percent overcast | 100     | 100     | 100     | 90      | *50     |
| (Bearing (Rel) | -       | -       | -       | -       | 120     |
| (Percent Illum. | -       | 100     | -       | -       | 100     |

**Final Note:**
Type of Camouflage on this patrol was DARK GREY 2/9SS.

**Page Number:**
-27-

All text appears to be typed. No handwritten notes or stamps.
The table structure is important. I will use a pipe-separated format for the table to represent its columns.
The "6 Hrs." for "Minutes since last SD Radar search" in column 20 is a bit faded but legible.
The asterisk before "50" in "Clouds: (Percent overcast)" for column 20 is present.
The "Range & Bearing of Plane when it was detected" row has "6 Mile" on a separate line under "270°" for column 19. I will represent this as a multi-line cell or combine it. Given the structure, it seems like the "6 Mile" is part of the same data point for column 19. I will put it on the same line for simplicity in the pipe-separated format, or indicate the line break if it's clearer. Let's try to keep it on one

— page 98 —
Subject: U.S.S. STARK (SS.14) - Report of Second War Patrol.
(-) CONTACTS (Continued).

| | | 26 | 27 | 28 | 29 | 30 |
|---|---|---|---|---|---|---|
| Date | | 8-10 | 8-10 | 8-10 | 8-11 | 8-11 |
| U | Time (Zone) (-9) | 1043 | 1125 | 1155 | 0915 | 1106 |
| S | Position: Lat. | 24-28N | 24-28N | 24-28N | 24-41N | 24-42N |
| S | Long. | 141-10E | 141-10E | 141-10E | 141-29E | 141-24E |
| S | Speed | 3 | 3 | 3 | 3 | 3 |
| T | Course | 070 | 250 | 250 | 300 | 300 |
| A | Trim | PER | RAD | PER | PER | PER |
| R | Minutes Since Last | 12 | - | 0 | 14 | 16 |
| K | CD Radar Search hrs. | 0 | 0 | 0 | hrs. | hrs. | Number | 1 | 1 | 1 | 1 | 7 |
| | Type | Sally | UNK | Zeke | Topsy | 1 Sally |
| | | | | | | 6 Zekes |
| | Probable Mission | PAT | E | M | UNK | UNK | C | How Contacted | PER | SD | PER | PER | PER |
| O | Initial Range | 20 | 6 | 2 | 10 | 6 |
| N | | Mile | Mile | Mile | Mile | Mile |
| T | Elevation Angle | 20 | - | 20° | 20° | - |
| A | Range & Relative | | | 020 | | |
| C | Bearing of Target | | | | | |
| T | When it Detected | ND | UNK | 2 Mile | ND | ND |
| | Submarine | C | (State of) | | | | | |
| O | Sea: (Beaufort) | 3 | 3 | 3 | 2 | 2 |
| N | (Direction) (Rel) | 100 | 100 | 100 | 150 | 150 |
| D | Visibility: (Miles) | 30 | 30 | 30 | 30 | 30 |
| I | (Ceiling) in ft. | | | | | |
| T | Clouds: (Type) | 2000 | 4000 | 4000 | 10000 | 10000 |
| I | (Percent over) | 50 | 70 | 70 | 10 | 10 |
| O | (Base) | - | - | - | - | - |
| N | (Bearing) (Rel) | - | - | - | - | - |
| S | Moon: (Phase) | - | - | - | - | - |
| | (Percent Illum.) | - | - | - | - | - |

- Type of S/M Camouflage on this patrol was DARK GREY 32/9SS.

-29-

— page 99 —
Subject: U.S.S. SHARK (SS314) - Report of Second War Patrol.
(G) AIRCRAFT CONTACTS (Continued).

| | 31 | 32 | 33 | 34 | 35 |
|---|---|---|---|---|---|
| Date | 8-14 | 8-14 | 8-14 | 8-14 | 8-14 |
| Time (Zone) (-9) | 1039 | 1041 | 1050 | 1125 | 1158 |
| Position: Lat. | 24-27 N | 24-27 N | 24-27 N | 24-27 N | 24-25 N |
| Long. | 141-10 E | 141-10 E | 141-10 E | 141-10 E | 140-58 E |
| Speed | 15 | 3 | 3 | 3 | 15 |
| Course | 020 | 110 | 160 | 270 | 260 |
| Trim | SURF | RAD | RAD | RAD | SURF |
| Minutes since last search | 0 | 0 | 0 | 0 | 0 |
| Number | 1 | 1 | 1 | 1 | 1 |
| Type | UNK | UNK | UNK | UNK | UNK |
| Probable Mission | H | H | H | H | H |
| How Contacted | SD | SD | SD | SD | SD |
| Initial Range | 6 Mile | 2 Mile | 9 Mile | 3½ Mile | 11 Mile |
| Elevation, Range & Bearing of Relative Plane when it detected Submarine | UNK | UNK | UNK | UNK | UNK |
| Sea: (Beaufort) | 3 | 3 | 3 | 3 | 3 |
| (Direction) (Rel) | 090 | 090 | 090 | 090 | 090 |
| Visibility (miles) | 25 | 25 | 25 | 25 | 25 |
| Clouds: (Type & Height in Ft.) | 5000 | 5000 | 5000 | 5000 | 5000 |
| (Percent overcast) | 50 | 50 | 50 | 50 | 50 |
| Moon: (Bearing) (Rel) | - | - | - | - | - |
| (Percent Illum.) | - | - | - | - | - |

Type of S/M Camouflage on this patrol was DARK GREY 32/9SS.

-30-

— page 99 —
Subject: U.S.S. SHARK (SS314) - Report of Second War Patrol.
(G) AIRCRAFT CONTACTS (Continued).

| | 31 | 32 | 33 | 34 | 35 |
|---|---|---|---|---|---|
| Date | 8-14 | 8-14 | 8-14 | 8-14 | 8-14 |
| Time (Zone) (-9) | 1039 | 1041 | 1050 | 1125 | 1158 |
| Position: Lat. | 24-27 N | 24-27 N | 24-27 N | 24-27 N | 24-25 N |
| Long. | 141-10 E | 141-10 E | 141-10 E | 141-10 E | 140-58 E |
| Speed | 15 | 3 | 3 | 3 | 15 |
| Course | 020 | 110 | 160 | 270 | 260 |
| Trim | SURF | RAD | RAD | RAD | SURF |
| Minutes since last search | 0 | 0 | 0 | 0 | 0 |
| Number | 1 | 1 | 1 | 1 | 1 |
| Type | UNK | UNK | UNK | UNK | UNK |
| Probable Mission | H | H | H | H | H |
| How Contacted | SD | SD | SD | SD | SD |
| Initial Range | 6 Mile | 2 Mile | 9 Mile | 3½ Mile | 11 Mile |
| Elevation, Range & Bearing of Relative Plane when it detected Submarine | UNK | UNK | UNK | UNK | UNK |
| Sea: (Beaufort) | 3 | 3 | 3 | 3 | 3 |
| (Direction) (Rel) | 090 | 090 | 090 | 090 | 090 |
| Visibility (miles) | 25 | 25 | 25 | 25 | 25 |
| Clouds: (Type & Height in Ft.) | 5000 | 5000 | 5000 | 5000 | 5000 |
| (Percent overcast) | 50 | 50 | 50 | 50 | 50 |
| Moon: (Bearing) (Rel) | - | - | - | - | - |
| (Percent Illum.) | - | - | - | - | - |

Type of S/M Camouflage on this patrol was DARK GREY 32/9SS.

-30-

— page 100 —
Subject: U.S.S. STARK (SS314) - Report of Second War Patrol.
(G) AIRCRAFT CONTACTS (Continued).

                                     36        37        38
Date                                 8-15      -17       8-19
Time (Zone) (-9)                     1125      1317      1155
Position: Lat.                       24-14 N   24-13 N   30-10 N
           Long.                     141-06 E  141-20 E  140-34.5 E
Speed                                15        15        15
Course                               100       220       090
Trim                                 SURF      SURF      SURF
Minutes since last
SD Radar search                      1         0         1
Number                               1         1         1
Type                                 Mavis     UMX       Seaplane
Trouble                              FAT       FAT       FAT
Low Contact                          Sight     SD        Sight
Initial Range                        8 Mile    20 Mile   6 Mile
Elevation Angle                      3°        -         3°
Relative Bearing of
Plane when it detected
submarine                            ND        ND        ND
Sea: (State (Beau-
fort))                               2         2         3
(Direction (Rel))                    060       060       090
Visibility (Miles)                   30        20        20
Ceiling in Ft.                       8000      8000      6000
Clouds: (Percent Over-
cast)                                20        20        30
(Bearing (Rel))                      -         -         -
Moon: (Percent Illum.                -         -         -

S/M Camouflage on this patrol was DARK GRAY 32/9SS.
-31-

— page 104 —
Subject: U.S.S. SILVERSIDES (SS314) - Report of Second War Patrol.
(21) ATTACK (Continued).
(SS314). TORPEDO ATTACK NO. 2. (E.U.) PATROL NO. 2.
Time: 0410(-2) Date: 20 July 1944. Lat: 27-46.0N. Long: 141-05.0E

TARGET DATA - DAMAGE INFLICTED

Description: Target attacked was an unidentified destroyer in
position about 3000 yards on the port bow of another
unidentified ship. Contact was first made by SJ radar
on one "pip" at a range of 12,500 yards. A second
smaller "pip" astern of the initial contact was picked
up at a range of 12,000 yards. The leading ship which
gave the larger radar "pip" throughout, was selected as
the target and tracked. The approach was made on the
surface into a head-on sea during morning twilight in
very poor visibility, and in the face of a driving rain.
The outline of the target, showing it to be a destroyer,
was not seen until just after torpedoes had been fired
and range had closed to 2000 yards. The sea, estimated
at force 5, was very rough with heavy swells from the
south.

Ship Damaged
or probably
sunk: None.

Target: Draft: 7'-9', Course: 115°T., Speed: 7.5 knts, Range: 2350yds.

OWN SHIP DATA

Speed: 7.6 knts. Course: 170°T. Depth: surface (22ft) Angle: 0°.

FIRE CONTROL AND TORPEDO DATA

Type attack: Initial contact was made by SJ radar at a range of
12,500 yards with a second "pip" visible at 12,000 yards.
The two ships were in loose column with about
about 3000 yards ahead. Leading ship was tracked by
T.D.C. and both navigational plots on a steady course
of 050°T., at 7.5 knots for approximately one half hour
while SILVERSIDES was closing track on the surface and attempt-
ing to gain a firing position. At a range of 3400 yards
target changed course 30° away to 115°T. The resulting less
angle had to be accepted and SILVERSIDES adjusted
speed to gain a firing position for 130° port track with
nearly 0 gyros and a torpedo run of 2400 yards. The

-35-

— page 104 —
Subject: U.S.S. SILVERSIDES (SS314) - Report of Second War Patrol.
(II) AT CK (Continued).
(SS314). TORPEDO AT CK NO. 2. (E.U.) PATROL NO. 2.

Time: 0410(-2) Date: 20 July 1944. Lat: 27-46.0N. Long: 141-05.0E

TARGET DATA - DAMAGE INFLICTED
Description: Target attacked was an unidentified destroyer in
position about 3000 yards on the port bow of another
unidentified ship. Contact was first made by SJ radar
on one "pip" at a range of 12,500 yards. A second
smaller "pip" astern of the initial contact was picked
up at a range of 12,000 yards. The leading ship which
gave the larger radar "pip" throughout, was selected as
the target and tracked. The approach was made on the
surface into a head-on sea during morning twilight in
very poor visibility, and in the face of a driving rain.
The outline of the target, showing it to be a destroyer,
was not seen until just after torpedoes had been fired
and range had closed to 2000 yards. The sea, estimated
at force 5, was very rough with heavy swells from the
south.

Ship Damaged None.
or probably
sunk:

Target: draft: 7'-9', Course: 115°T., Speed: 7.5 knots, Range: 2350yds.

OWN SHIP DATA
Speed: 7.6 kts. Course: 170°T. Depth: surface(22ft) Angle: 0°.

FIRE CONTROL AND TORPEDO DATA
Type attack: Initial contact was made by SJ radar at a range of
12,500 yards with a second "pip" visible at 12,000 yards.
The two ships were in loose column with the lead ship
about 3000 yards ahead. Leading ship was tracked by
T.D.C. and both navigational plots on a steady course
of 055°T., at 7.5 knots for approximately one half hour
while SILVERSIDES was closing track on the surface and attempt-
ing to gain a firing position. At a range of 3400 yards
the target changed course 30° away to 115°T. Since daylight
was fast approaching, the resulting less favorable track
angle had to be accepted and SILVERSIDES adjusted
speed to gain a firing position for 130° port track with
nearly 0 gyros and a torpedo run of 2400 yards. The

-35-

— page 106 —
Subject: U.S.S. SEARK (SS314) - Report of Second War patrol.

ATTACK NO. 2.

| | #5 | #6 | #3 | #4 |
| :| :------- | :------- | :------- | :------- |
| Tubes Fired | | | | |
| Track Angle | 127P | 129P | 131P | 133P |
| Gyro Angle | 350° | 356° | 354° | 352° |
| Depth Set (ft) | 10 ft. | 10 ft. | 10 ft. | 10 ft. |
| Power | A L L S I N G L E P O W E R - H I G H |
| Hit or Miss | Miss | Miss | Miss | Miss |
| Erratic | No | No | No | No |
| Mark torpedo | 23 | 23 | 23 | 23 |
| Serial Number | 52816 | 53060 | 52867 | 61752 |
| Mark Exploder | 6-4 | 6-4 | 6-4 | 6-4 |
| Serial Number | 17707 | 3385 | 803 | 3304 |
| Actuation Set | Contact | Contact | Contact | Contact |
| Actuation Actual | - | - | - | - |
| Mark Warhead | 16 | 16 | 16-1 | 16-1 |
| Serial Number | 10168 | 11040 | 10232 | 880 |
| Explosive | TORPEX | TORPEX | TORPEX | TORPEX |
| Firing Interval | - | 10" | 9" | 9" |
| Type Spread | 2°R | 2/3°R | 2/3°L | 2°L |
| Sea Condition | Rough | Rough | Rough | Rough |
| Overhaul Activity | A L L S/M B A S E, N I D A Y, T. H. |

-37-

— page 106 —
Subject: U.S.S. SEARK (SS314) - Report of Second War patrol.

ATTACK NO. 2.

| | #5 | #6 | #3 | #4 |
| :| :------- | :------- | :------- | :------- |
| Tubes Fired | | | | |
| Track Angle | 127P | 129P | 131P | 133P |
| Gyro Angle | 350° | 356° | 354° | 352° |
| Depth Set (ft) | 10 ft. | 10 ft. | 10 ft. | 10 ft. |
| Power | A L L S I N G L E P O W E R - H I G H |
| Hit or Miss | Miss | Miss | Miss | Miss |
| Erratic | No | No | No | No |
| Mark torpedo | 23 | 23 | 23 | 23 |
| Serial Number | 52816 | 53060 | 52867 | 61752 |
| Mark Exploder | 6-4 | 6-4 | 6-4 | 6-4 |
| Serial Number | 17707 | 3385 | 803 | 3304 |
| Actuation Set | Contact | Contact | Contact | Contact |
| Actuation Actual | - | - | - | - |
| Mark Warhead | 16 | 16 | 16-1 | 16-1 |
| Serial Number | 10168 | 11040 | 10232 | 880 |
| Explosive | TORPEX | TORPEX | TORPEX | TORPEX |
| Firing Interval | - | 10" | 9" | 9" |
| Type Spread | 2°R | 2/3°R | 2/3°L | 2°L |
| Sea Condition | Rough | Rough | Rough | Rough |
| Overhaul Activity | A L L S/M B A S E, N I D A Y, T. H. |

-37-

— page 110 —
Subject: U.S.S. SHARK (SS314) - Report of Second War Patrol.
(1) RADAR (Continued).

Two attempts were made to communicate by keying the SJ
radar with only fifty percent success. On the night
of 11 August 1944, recognition signals and calls were
exchanged with GATO easily and quickly, while on the
night of 16 August 1944, attempts to communicate in
this fashion with STERLET were unsuccessful. The
following material deficiencies were encountered
and corrected from spares on board during this patrol:
(a) Discovered an abnormal center hole condition in the
PPI scope on both the forty and eight thousand yard
scales. Trouble was traced to R44, a 7 megohm
bleeder resistor which was open. Replaced when
replaced. R16 and C12 were both replaced when
investigation showed them to be weak. Retightened
and reset crystal chuck by hand.
(b) Replaced burned out 836 tube in high voltage
rectifier after fuses 9 & 10 burned out.

(2) SD radar:

While in the area this gear was used very sparingly,
because it was felt that Japanese planes were able to
home in on the beam of this radar, and because of the
evidence that our SD beam was apparent to the operators
of Japanese radar sets heard on our APR-1. When used
however, it gave excellent service, with relatively low
maintenance work required.
During lifeguard operations the SD was indispensable. It
was used to determine the location of planes during
strikes on IWO JIMA, and in conjunction with the IFF
gave us, at least, a basis for determining whether to
dive or stay on the surface at a time when this
information was badly needed, as the success of a rescue
might well have depended upon it.
It is recommended that pilots be more thoroughly indoctrin-
ated in the necessity of using their IFF gear when
working in conjunction with submarines. On several
occasions unnecessary dives were made by SHARK at
crucial moments in the rescue of the two downed
aviators. It was not until after we had picked up the
carrier pilot, that we learned that carrier planes had
no radar gear for establishing the friendly character
of a submarine.

The following material deficiencies were encountered and
corrected:
(a) Intermittently had sweep displaced downward due to
fouling of shoe contacts. Corrected by cleaning and

-41-

— page 110 —
Subject: U.S.S. SHARK (SS314) - Report of Second War Patrol.
(1) RADAR (Continued).

Two attempts were made to communicate by keying the SJ
radar with only fifty percent success. On the night
of 11 August 1944, recognition signals and calls were
exchanged with GATO easily and quickly, while on the
night of 16 August 1944, attempts to communicate in
this fashion with STERLET were unsuccessful. The
following material deficiencies were encountered
and corrected from spares on board during this patrol:
(a) Discovered an abnormal center hole condition in the
PPI scope on both the forty and eight thousand yard
scales. Trouble was traced to R44, a 7 megohm
bleeder resistor which was open. Replaced when
replaced. R16 and C12 were both replaced when
investigation showed them to be weak. Retightened
and reset crystal chuck by hand.
(b) Replaced burned out 836 tube in high voltage
rectifier after fuses 9 & 10 burned out.

(2) SD radar:

While in the area this gear was used very sparingly,
because it was felt that Japanese planes were able to
home in on the beam of this radar, and there was
evidence that our SD beam was apparent to the operators
of Japanese radar sets heard on our APR-1. When used
however, it gave excellent service, with relatively low
maintenance work required.
During lifeguard operations the SD was indispensable. It
was used to determine the location of planes during
strikes on IWO JIMA, and in conjunction with the IFF
gave us, at least, a basis for determining whether to
dive or stay on the surface at a time when this
information was badly needed, as the success of a rescue
might well have depended upon it.
It is recommended that pilots be more thoroughly indoctrin-
ated in the necessity of using their IFF gear when
working in conjunction with submarines. On several
occasions unnecessary dives were made by SHARK at
crucial moments in the rescue of the two downed
aviators. It was not until after we had picked up the
carrier pilot, that we learned that carrier planes had
no radar gear for establishing the friendly character
of a submarine.

The following material deficiencies were encountered and
corrected:
(a) Intermittently had sweep displaced downward due to
fouling of shoe contacts. Corrected by cleaning and

-41-

— page 112 —
DATE        : LOCATION                 : FREQUENCY : PULSE RATE : REMARKS
::::
| DATE      | LOCATION                  | FREQUENCY | PULSE RATE | REMARKS

— page 113 —
DATE : LOCATION : FREQUENCY : PULSE RATE : REMARKS
7/28/44 : 100 to 150 Miles : 100 Mcs. : 1000 Cps. : Weak and sweeping intermittently.
: NE of CHICHI : 75 Mcs. : 1000 Cps. : Sweeping very fast across us and getting
: JIMA : : : stronger. Turned on our SD and found a
: : : : plane pip at 22 miles, believe this was his
: : : : radar.
: : 270 Mcs. : 1500 to : Heard this only twice for very short periods
: : : 2000 Cps. : of time, sweeping very fast and weak.
:
7/29/44 : 80 to 150 Miles : 100 Mcs. : 1000 Cps. : Weak to moderately strong and sweeping.
: N of CHICHI JIMA :
:
7/30/44 : 150 Miles NNW of : 100 Mcs. : 1000 Cps. : Sweeping moderately strong.
: CHICHI JIMA :
:
7/31/44 : Vicinity TORI SHIMA : --- : --- : All clear.
:
8/1/44 : 100 to 150 Miles : 100 Mcs. : 1000 Cps. : All were weak and sweeping with following
: N.W. & NNW of CHI- : 75 Mcs. : 1000 Cps. : exceptions: Heard 75 Mcs. steady and getting
: CHI JIMA : 150 Mcs. : 8000 Cps. : stronger, immediately sighted plane and had
: : 237 Mcs. : 1500 : to dive. Heard 100 Mcs. sweeping over us very
: : : to 2000 Cps : fast and getting louder, soon picked up a
: : : : plane on the SJ radar which closed us about
: : : : 300 knots.
:
8/2/44 : 40 Miles E of CHI- : 100 Mcs. : 1000 Cps. : Moderately strong and sweeping.
: CHI JIMA and H.H. :
: JIMA going S :
:
8/3/44 : 150 Miles NE of : 100 Mcs. : 1000 Cps. : Sweeping and growing weaker as we leave
: IWO JIMA : : : CHICHI JIMA behind.

-44-

— page 113 —
DATE : LOCATION : FREQUENCY : PULSE RATE : REMARKS
7/28/44 : 100 to 150 Miles : 100 Mcs. : 1000 Cps. : Weak and sweeping intermittently.
        : NE of CHICHI     : 75 Mcs.  : 1000 Cps. : Sweeping very fast across us and getting
        : JIMA             :          :           : stronger. Turned on our SD and found a
        :                  :          :           : plane pip at 22 miles, believe this was his
        :                  :          :           : radar.
        :                  : 270 Mcs. : 1500 to   : Heard this only twice for very short periods
        :                  :          : 2000 Cps. : of time, sweeping very fast and weak.
7/29/44 : 80 to 150 Miles  : 100 Mcs. : 1000 Cps. : Weak to moderately strong and sweeping.
        : N of CHICHI JIMA :          :           :
7/30/44 : 150 Miles NNW of : 100 Mcs. : 1000 Cps. : Sweeping moderately strong.
        : CHICHI JIMA      :          :           :
7/31/44 : Vicinity TORI SHIMA : ---     : ---       : All clear.
8/1/44  : 100 to 150 Miles : 100 Mcs. : 1000 Cps. : All were weak and sweeping with following
        : NW & NNW of CHI- : 75 Mcs.  : 1000 Cps. : exceptions: Heard 75 Mcs. steady and getting
        : CHI JIMA         : 150 Mcs. : 8000 Cps. : stronger, immediately sighted plane and had
        :                  : 237 Mcs. : 1500      : to dive. Heard 100 Mcs. sweeping over us very
        :                  :          : to 2000 Cps : fast and getting louder, soon picked up a
        :                  :          :           : plane on the SJ radar which closed us about
        :                  :          :           : 300 knots.
8/2/44  : 40 Miles E of CHI- : 100 Mcs. : 1000 Cps. : Moderately strong and sweeping.
        : CHI JIMA and H.H. :          :           :
        : JIMA going S     :          :           :
8/3/44  : 150 Miles NE of  : 100 Mcs. : 1000 Cps. : Sweeping and growing weaker as we leave
        : IWO JIMA         :          :           : CHICHI JIMA behind.

-44-

— page 114 —
DATE       : LOCATION                 : FREQUENCY : PULSE RATE : REMARKS
::::
8/4/44     : 20 Miles SW of         : 75 Mcs.   : 1000 Cps.  : The island of IWO JIMA was apparently alerted
           : IWO JIMA                 : 100 Mcs.  : 1000 Cps.  : by our carrier task force, for about one half
           :                          : 101 Mcs.  : 800 Cps.   : hour before the first wave of planes struck.
           :                          : 105 Mcs.  : 1000 Cps.  : Five additional radar frequencies were
           :                          : 106 Mcs.  : 1000 Cps.  : heard where before only 100 Mcs and 105 Mcs.
           :                          : 237 Mcs.  : 1500 to    : had been heard. These eight frequencies were
           :                          :           : 2000 Cps.  : various combinations of weak and strong,
           :                          : 109 Mcs.  : 800 Cps.   : sweeping and steady. We were unable to tie
           :                          :           :            : one of these up with the appearance of Japan-
           :                          :           :            : ese planes sighted this day.
           :                          :           :            :
8/5/44     : 20 Miles SW of         : 98 Mcs.   : 800 Cps.   : Weak and Sweeping.
           : IWO JIMA to 60         : 106 Mcs.  : 1000 Cps.  : Weak and Sweeping.
           : Miles E of IWO         : 195 Mcs.  : 400 Cps.   : Heard this frequency after surfacing from
           : JIMA                     :           :            : a dive made due to possible plane sighting.
           :                          :           :            : May possibly be one of our own planes search-
           :                          :           :            : ing for downed liberator. This is only time
           :                          :           :            : this frequency was heard.
           :                          :           :            :
8/6/44     : 40 Miles SW IWO        : 98 Mcs.   : 800 Cps.   : Weak and sweeping, sometimes steady on us.
           : JIMA                     : 105 Mcs.  : 1000 Cps.  : Weak and sweeping.
           :                          :           :            :
8/7/44     : 50 Miles SW of         : 98 Mcs.   : 800 Cps.   : Weak and sweeping, at about 1/2 RPM.
           : H.H. JIMA                : 101 Mcs.  : 1000 Cps.  :
           :                          :           :            :
8/8/44     : 50 Miles NNW of        : 100 Mcs.  : 1000 Cps.  : Weak to moderately strong and sweeping.
           : IWO JIMA                 : 100 Mcs.  : 1000 Cps.  : Weak to moderately strong and sweeping.
           :                          :           :            :

-45-

— page 114 —
DATE       : LOCATION                 : FREQUENCY : PULSE RATE : REMARKS
::::
8/4/44     : 20 Miles SW of           : 75 Mcs.   : 1000 Cps.  : The island of IWO JIMA was apparently alerted
           : IWO JIMA                 : 100 Mcs.  : 1000 Cps.  : by our carrier task force, for about one half
           :                          : 101 Mcs.  : 800 Cps.   : hour before the first wave of planes struck.
           :                          : 105 Mcs.  : 1000 Cps.  : Five additional radar frequencies were
           :                          : 106 Mcs.  : 1000 Cps.  : heard where before only 100 Mcs and 105 Mcs.
           :                          : 237 Mcs.  : 1500 to    : had been heard. These eight frequencies were
           :                          :           : 2000 Cps.  : various combinations of weak and strong,
           :                          : 109 Mcs.  : 800 Cps.   : sweeping and steady. We were unable to tie
           :                          :           :            : any one of these up with the appear-
           :                          :           :            : ance of the Japanese planes sighted this day.
           :                          :           :            :
8/5/44     : 20 Miles SW of           : 98 Mcs.   : 800 Cps.   : Weak and Sweeping.
           : IWO JIMA to 60           : 106 Mcs.  : 1000 Cps.  : Weak and Sweeping.
           : Miles E of IWO           : 195 Mcs.  : 400 Cps.   : Heard this frequency after surfacing from
           : JIMA                     :           :            : a dive made due to possible plane sighting.
           :                          :           :            : May possibly be one of our own planes search-
           :                          :           :            : ing for downed liberator. This is only time
           :                          :           :            : this frequency was heard.
           :                          :           :            :
8/6/44     : 40 Miles SW IWO          : 98 Mcs.   : 800 Cps.   : Weak and sweeping, sometimes steady on us.
           : JIMA                     : 105 Mcs.  : 1000 Cps.  : Weak and sweeping.
           :                          :           :            :
8/7/44     : 50 Miles SW of           : 98 Mcs.   : 800 Cps.   : Weak and sweeping, at about 1/2 RPM.
           : H.H. JIMA                : 101 Mcs.  : 1000 Cps.  :
           :                          :           :            :
8/8/44     : 50 Miles NNW of          : 100 Mcs.  : 1000 Cps.  : Weak to moderately strong and sweeping.
           : IWO JIMA                 : 100 Mcs.  : 1000 Cps.  : Weak to moderately strong and sweeping.
           :                          :           :            :

-45-

— page 116 —
DATE | LOCATION | FREQUENCY | PULSE RATE | REMARKS
: | : | : | : | :
8/18/44 | | 118 Mcs. | 60 Cps. | This was identified as the U.S.S.
| | | | STERLET's SD radar.
| | 115 Mcs. | 1000 Cps. | This was an additional frequency heard.
| | | | Its pulse wave form and pulse rate were
| | | | identical with those of other Japanese
| | | | Radar Sets.
8/21/44 | 350 Miles N of | 76 Mcs. | 1000 Cps. | Moderately strong and sweeping.
| MARCUS | | |

-47-

— page 117 —
Subject:
U.S.S. SHARK (SS314) - Report of Second War Patrol.
(N) SOUND
(1) SUPERSONIC GEAR:

The supersonic sound gear is still unsatisfactory in
regards to binding and noise at deep submergence. The
extra drift stops installed during the last refit in
MIDWAY made no appreciable improvement in operating
conditions. With this exception the sound gear was
satisfactory in its operation. On one occasion the QC
cable parted at the point where the cable enters the
crown of the head. This is the third occasion on which
this has occurred and some measures to reduce the strain
on these cables must be devised.

(2) JP SOUND:

JP was its usual effective self. Until a quieter
supersonic sound gear is designed, why not have a keel
mounted JP gear?

(3) SOUND CONDITIONS:

Sound conditions in the area were very poor. On the
first attack the maximum range at which screws could be
heard on the QB gear was 1600 yards. JP was unable to
make contact. On the second attack JP made intermittent
contact on fast escort screws at 6000 yards. The QB
operator managing to track the escorts fairly well at
about 6000 yards by their pings on 14, 16, & 18 Kcs,
although no screws were heard. JK was able to obtain
fairly good bearings on escort screws at about 3000
yards. All pinging heard was on a long scale (about
8-1/4 seconds).

Volcanic noises were noticeable in the area. They were
characterized by a pounding sound, sharp and distinct,
as though caused by steam escaping into the water. The
noise was aptly described as "carpenters shingling a
roof". On other occasions, areas of very high noise
level were noted, particularly near KITA IWO JIMA.

-48-

— page 122 —
SUBMARINE DIVISION TWO TWENTY-TWO
c/o Fleet Post Office
San Francisco, California

Serial (032)
CONFIDENTIAL 1 September 1944.

From: Commander Submarine Division 222.
To: Commander-in-Chief, United States Fleet.
Via: (1) Commander Submarine Squadron 22.
     (2) Commander Submarine Force, Pacific Fleet.
     (3) Commander-in-Chief, U.S. Pacific Fleet.

SUBJECT: USS SHARK (SS314) - Report of Second War Patrol.

1. The Second War Patrol of SHARK extended over a period of fifty
days, thirty-one of which were spent in the BONIN-VOLCANO ISLANDS AREA.

2. Only three contacts on worthwhile targets were made, and two of
these were developed into attacks:

    Attack No. 1: On 19 July an AK (MIKAGE MARU No. 18), closely escorted
    by both surface and air escorts, was attacked with four torpedoes. The
    last torpedo was heard to hit, but prompt counter attack by the DD escort
    prevented further periscope observation. Torpedoes smoked heavily, which
    may have accounted for escorts' exceedingly quick countermeasures.

    Attack No. 2: On 26 July, a surface attack was made on a destroyer, in
    a force of 5, with a torpedo depth setting of 10 feet. Until after fir-
    ing the target was believed to be an AK. It is likely that, with the con-
    ditions prevailing, these torpedoes ran under the target.

3. On 1-2 August, two end-around runs on a 10-12 ship convoy were
frustrated, in the first instance by maneuvers of the target and alertness
of escorts, and in the second instance by the presence of an enemy plane
apparently radar equipped.

4. Sixteen days of plane lifeguard duties resulted in the rescue
of two aviators. This duty was well performed. Search was well conducted
and persistent.

5. SHARK arrived at Pearl Harbor in good material condition. Refit
will be accomplished in normal time.

6. It is recommended that SHARK be credited with inflicting the
following damage on the enemy:

    DAMAGED

    1 Medium AK (MIKAGE MARU No.18 type) (EC) 4319 tons.

[SIGNATURE: W. L. WRIGHT.]

— page 122 —
SUBMARINE DIVISION TWO TWENTY-TWO
c/o Fleet Post Office
San Francisco, California

Serial (032)
[STAMP: CONFIDENTIAL] 1 September 1944.

From: Commander Submarine Division 222.
To: Commander-in-Chief, United States Fleet.
Via: (1) Commander Submarine Squadron 22.
     (2) Commander Submarine Force, Pacific Fleet.
     (3) Commander-in-Chief, U.S. Pacific Fleet.

SUBJECT: USS SHARK (SS314) - Report of Second War Patrol.

1. The Second War Patrol of SHARK extended over a period of fifty
days, thirty-one of which were spent in the BONIN-VOLCANO ISLANDS AREA.

2. Only three contacts on worthwhile targets were made, and two of
these were developed into attacks:

    Attack No. 1: On 19 July an AK (MIKAGE MARU No. 18), closely escorted
    by both surface and air escorts, was attacked with four torpedoes. The
    last torpedo was heard to hit, but prompt counter attack by the DD escort
    prevented further periscope observation. Torpedoes smoked heavily, which
    may have accounted for escorts' exceedingly quick countermeasures.

    Attack No. 2: On 26 July, a surface attack was made on a destroyer, in
    a force of 5 sea, with a torpedo depth setting of 10 feet. Until after fir-
    ing the target was believed to be an AK. It is likely that, with the con-
    ditions prevailing, these torpedoes ran under the target.

3. On 1-2 August, two end-around runs on a 10-12 ship convoy were
frustrated, in the first instance by maneuvers of the target and alertness
of escorts, and in the second instance by the presence of an enemy plane
apparently radar equipped.

4. Sixteen days of plane lifeguard duties resulted in the rescue
of two aviators. This duty was well performed. Search was well conducted
and persistent.

5. SHARK arrived at Pearl Harbor in good material condition. Refit
will be accomplished in normal time.

6. It is recommended that SHARK be credited with inflicting the
following damage on the enemy:

    DAMAGED

    1 Medium AK (MIKAGE MARU No.18 type) (EC) 4319 tons.

W. L. WRIGHT.

— page 123 —
SUBMARINE SQUADRON TWENTY-TWO
Fleet Post Office,
San Francisco, California, ck
31 August 1944.

FC5-22/A16-3
Serial: 032
[HANDWRITTEN: DECLASSIFIED]

SECOND ENDORSEMENT to
CO SHARK Conf. ltr. SS314/
A16-3 Ser. 041 of 8-29-44.

From: Commander Submarine Squadron T.ENTY-TWO.
To : Commander in Chief, U.S. Fleet.
Via : (1) Commander Submarine Force, Pacific Fleet.
      (2) Commander in Chief, U.S. Pacific Fleet.

Subject: U.S.S. SHARK (SS314) - Report of Second War Patrol.

1. SHARK Second War Patrol extended over a period of fifty days,
   thirty-one days of which were spent in vicinity of BONIN and VOLCANO Islands.

2. During the first fifteen days on station three contacts were
   made on enemy vessels, resulting in two attacks:

   (a) At 1448, 19 July, a MIKAGE MARU No. 18 of 4319 tons, covered by
   two aircraft and escorted by one destroyer, one trawler and three patrol craft,
   was attacked with four torpedoes in a calm sea. Target was
   fired upon during a large zig and was missed with four torpedoes set at ten feet in a force
   away or else SHARK was sighted and enemy was turning to parallel
   torpedo tracks. Last torpedo hit. The rapidity with which
   heavily smoking torpedo tracks. Last torpedo hit. The rapidity with which
   commenced, one and one-half minutes later, indicates enemy had
   been alerted. Ensuing 39 close depth charges prevented further
   observations. Although breaking up noises were heard by sound operators and personnel in
   the room.

   (b) At 0410, 26 July, an unidentified destroyer in company with a
   smaller unescorted vessel was missed with four torpedoes set at ten feet in a force
   5 sea. The destroyer was believed to be a freighter prior to firing and was
   not soon until after last torpedo was on its way. Target increased speed and
   made wide sweeping turns towards SHARK which evaded on surface in the driving rain.
   No doubt torpedoes ran under the enemy.

   (c) The afternoon and night of 1-2 August was spent making two end-
   around runs in an elusive convoy of 10-12 ships. After first end-around SHARK
   dived at 2118 at 9000 yards because of 3/4 moon. After diving, moon was ob-
   scured by cloud and convoy succeeded in passing beyond firing range. Efforts
   to close resulted in alerting three escorts who kept SHARK submerged until
   0117. Another end-around was frustrated by an apparently radar-equipped plane
   which forced SHARK to dive beyond attack position.
   (1) If a radar depth approach using radar range and bearings
   had been possible after 2118 this convoy would not have escaped but SHARK
   considered that she would have been sighted at radar depth, being down
   moon from convoy.

3. Lifeguard duties, in addition to patrol, consumed the last
   sixteen days in the area. These were effectively and successfully carried
   out.

- 1 -

— page 124 —
FCS-22/.16-3
Serial: 032
[STAMP: DECLASSIFIED]
Subject: U.S.S. SHARK (SS314) - Report of Second War Patrol.

(continued)

(a) One plane was seen to crash at 1152, 4 August, about six miles
away but no survivors were found. Aircraft observers of this crash later veri-
fied complete disappearance of plane after hitting water.
(b) At 1350, 4 August, two aviators were rescued from a rubber boat.
SHARK notes that a gangway not would have been useful in this rescue with the heavy
seas running at the time.
(c) At 0340 a friendly plane, with IFF turned off or inoperative,
caused SHARK to dive during which VHF from plane told of friendly character.
Aircraft operating with submarines should not turn off IFF while on or near
station.
(d) At 1217, 6 August, SHARK was closely bombed by Jap aircraft and
at 1155 strafed by a Zoke. No damage resulted from either attack.
(e) Search for survivors is known to have been in rubber boat four
miles from southern edge of HIRAME I.E. JIMA resulted in sighting a partially
inflated rubber boat at 0930, 15 August. Aviator occupants may have been
strafed by Japs or made snow but no survivors were seen although SHARK
closed to within two miles of above and searched area on 16 and 17 August.

4. The failure of naval aircraft to turn on IFF prior to be properly
briefed concerning presence of friendly submarines in life guard duty and con-
sequent failure of life guard, thereby reducing his effectiveness, is again
noted in paragraph "U" of report. Failure of VHF communications with Army
Liberators on 14 August resulted in a 15-hour delay in the receipt of message
that Liberator had crashed within 20 miles of SHARK position at time of crash.

5. SHARK returned in good material condition and will be refitted
in normal period.

6. The Commanding officer, officers, and enlisted men of SHARK
are congratulated on damage inflicted upon the enemy and the successful rescue
of two aviators while performing life guard duties.

[SIGNATURE: J.A. Connolly]
J.A. CONNOLLY.

Copy to:
Comsubpac
Comsubron 222.
CO SHARK.

- 2 -

— page 124 —
FCS-22/.16-3
Serial: 032
[STAMP: DECLASSIFIED]
Subject: U.S.S. SHARK (SS314) - Report of Second War Patrol.

(continued)

(a) One plane was seen to crash at 1152, 4 August, about six miles
away but no survivors were found. Aircraft observers of this crash later veri-
fied complete disappearance of plane after hitting water.
(b) At 1350, 4 August, two aviators were rescued from a rubber boat.
SHARK notes that a gangway not would have been useful in this rescue with the heavy
seas running at the time.
(c) At 0340 a friendly plane, with IFF turned off or inoperative,
caused SHARK to dive during which VHF from plane told of friendly character.
Aircraft operating with submarines should not turn off IFF while on or near
station.
(d) At 1217, 6 August, SHARK was closely bombed by Jap aircraft and
at 1155 strafed by a Zoke. No damage resulted from either attack.
(e) Search for survivors is known to have been in rubber boat four
miles from southern edge of HIRAME I.E. JIMA resulted in sighting a partially
inflated rubber boat at 0930, 15 August. Aviator occupants may have been
strafed by Japs or made snow but no survivors were seen although SHARK
closed to within two miles of above and searched area on 16 and 17 August.

4. The failure of naval aircraft to turn on IFF prior to be properly
briefed concerning presence of friendly submarines in life guard duty and con-
sequent failure of life guard, thereby reducing his effectiveness, is again
noted in paragraph "U" of report. Failure of VHF communications with Army
Liberators on 14 August resulted in a 15-hour delay in the receipt of message
that Liberator had crashed within 20 miles of SHARK position at time of crash.

5. SHARK returned in good material condition and will be refitted
in normal period.

6. The Commanding officer, officers, and enlisted men of SHARK
are congratulated on damage inflicted upon the enemy and the successful rescue
of two aviators while performing life guard duties.

[SIGNATURE: J.A. Connolly]
J.A. CONNOLLY.

Copy to:
Comsubpac
Comsubron 222.
CO SHARK.

- 2 -

— page 125 —
hch
SUBMARINE FORCE, PACIFIC FLEET
FF12-10/A16-3(15)/(16)
Care of Fleet Post Office,
Serial 01904
San Francisco, California,
[STAMP: 9 SEP 1944]
7 September 1944.
CONFIDENTIAL

THIRD ENDORSEMENT to
SHARK Report of
Second War Patrol.
NOTE: THIS REPORT WILL BE
DESTROYED PRIOR TO
ENTERING PATROL AREA.

COMSUBSPAC PATROL REPORT NO. 514.
U.S.S. SHARK - 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. SHARK (SS314) - Report of Second War Patrol.
(10 July 1944 to 29 August 1944).

1. The second war patrol of the SHARK was conducted in
the Bonin Islands area. Her mission consisted of both patrol and life-
guard duties.

2. Excellent area coverage was maintained and three con-
tacts worthy of torpedo fire were made. All three contacts were ag-
gressively pursued and two attacks developed. Heavy anti-submarine
protection and evasive tactics made both attacks very difficult. The
first attack resulted in damage to a medium sized freighter but the
second attack failed. The SHARK did a thorough and courageous job of
lifeguarding, and was rewarded with the pleasure of rescuing two down-
ed aviators.

3. This patrol is designated as "Successful" for Combat
Insignia Award.

4. The Commander Submarine Force, Pacific Fleet, congratu-
lates the Commanding Officer, officers, and crew for this aggressive
patrol and splendid job of lifeguarding. The SHARK is credited with
having inflicted the following damage upon the enemy:

D A M A G E D

1 - Medium AK(MIKAGE MARU No.18 type)(EC) - 4,300 tons (Attack No. 1)

J. H. BROWN, Jr.

Distribution and authentication
on following page.
- 1 -

— page 125 —
hch
SUBMARINE FORCE, PACIFIC FLEET
FF12-10/A16-3(15)/(16)
Care of Fleet Post Office,
San Francisco, California,
Serial 01904
[STAMP: 9 SEP 1944]
7 September 1944.
[STAMP: DECLASSIFIED]
CONFIDENTIAL

THIRD ENDORSEMENT to
SHARK Report of
Second War Patrol.

COMSUBSPAC PATROL REPORT NO. 514.
U.S.S. SHARK - SECOND WAR PATROL.

From:
To:
Via:

Subject:

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

The Commander Submarine Force, Pacific Fleet.
The Commander-in-Chief, United States Fleet.
The Commander-in-Chief, U. S. Pacific Fleet.

U.S.S. SHARK (SS314) - Report of Second War Patrol.
(10 July 1944 to 29 August 1944).

1.
The second war patrol of the SHARK was conducted in
the Bonin Islands area. Her mission consisted of both patrol and life
guard duties.

2.
Excellent area coverage was maintained and three con-
tacts worthy of torpedo fire were made. All three contacts were ag-
gressively pursued and two attacks developed. Heavy anti-submarine
protection and evasive tactics made both attacks very difficult. The
first attack resulted in damage to a medium sized freighter but the
second attack failed. The SHARK did a thorough and courageous job of
lifeguarding, and was rewarded with the pleasure of rescuing two down-
ed aviators.

3.
This patrol is designated as "Successful" for Combat
Insignia Award.

4.
The Commander Submarine Force, Pacific Fleet, congratu-
lates the Commanding Officer, officers, and crew for this aggressive
patrol and splendid job of lifeguarding. The SHARK is credited with
having inflicted the following damage upon the enemy:

D A M A G E D
1 - Medium AK(MIKAGE MARU No.18 type)(EC) - 4,300 tons (Attack No. 1)

J. H. BROWN, Jr.

Distribution and authentication
on following page.
- 1 -

— page 126 —
SUBMARINE FORCE, PACIFIC FLEET
FF12-10/A16-3(15)/(16)
Serial 01904
[STAMP: DECLASSIFIED]
[STAMP: CONFIDENTIAL]
THIRD ENDORSEMENT to
COMSUBSPAC PATROL REPORT NO. 514.
U.S.S. SHARK - SECOND WAR PATROL.

Subject: U.S.S. SHARK (SS314) - Report of Second War Patrol.
(10 July 1944 to 29 August 1944).

— page 127 —
DATE 16 May-8 June 1944
FROM CROSS INDEX CARD
NAME SHARK
SERIAL
DATE
SUBJECT Coordinated Patrol Report
Report of Coordinated Attack Group under Capt. L.M.Blair
(BLAIR'S BLASTERS) operations west of MARIANAS & in the
East China Sea. Sank or damaged 75,100 tons of enemy
shipping.
FILED: War Diary
Separately under TASK GROUP 17.12 no ser of 12 Jul 44

MICROSERIAL NO. ACTION REPORT OPNAV FORM 3840-13 (10-55)

DATE 8-24 October 1944
FROM CROSS INDEX CARD
NAME SHARK
SERIAL
DATE
SUBJECT Coordinated Attack Group
Report of NINETEENTH Coordinated Attack Group under Cdr.
E.N.Blakely (BLAKELY'S BEHEMOTHS) operations on "Doctor
schedule" & CONVOY COLLEGE. Sank or damaged 47,500 tons
of enemy shipping. SHARK lost on this patrol.
FILED: War Diary
Separately under TASK GROUP 17.11 ser 002 of no date

MICROSERIAL NO. ACTION REPORT OPNAV FORM 3840-13 (10-55)

24 October 1944
CROSS INDEX CARD
SHARK

Lost during or subsequently to attack on Japanese convoy
off Pratas Islands in the Luzon Straits area...

Separately under SUBSPAC ser 00963 of 27 Nov 44

— page 127 —
DATE 16 May-8 June 1944
FROM CROSS INDEX CARD
NAME SHARK
SERIAL
DATE

SUBJECT Coordinated Patrol Report

Report of Coordinated Attack Group under Capt. L.M.Blair
(BLAIR'S BLASTERS) operations west of MARIANAS & in the
East China Sea. Sank or damaged 75,100 tons of enemy
shipping.

FILED: War Diary
Separately under TASK GROUP 17.12 no ser of 12 Jul 44

MICROSERIAL NO.                               ACTION REPORT OPNAV FORM 3840-13 (10-53)

DATE 8-24 October 1944
FROM CROSS INDEX CARD
NAME SHARK
SERIAL
DATE

SUBJECT Coordinated Attack Group

Report of NINETEENTH Coordinated Attack Group under Cdr.
E.N.Blakely (BLAKELY'S BEHEMOTHS) operations on "Doctor
schedule" of CONVOY COLLEGE. Sank or damaged 47,500 tons
of enemy shipping. SHARK lost on this patrol.
FILED: War Diary
Separately under TASK GROUP 17.11 ser 002 of no date

MICROSERIAL NO.                               ACTION REPORT OPNAV FORM 3840-13 (10-53)

24 October 1944
CROSS INDEX CARD
SHARK

Lost during or subsequently to attack on Japanese convoy
off Pratas Islands in the Luzon Straits area...

Separately under SUBSPAC ser 00963 of 27 Nov 44

— page 128 —
Submarine Force, Pacific Fleet

ComTaskGroup 17.12
(ComSubDiv 44)
c/o F.P.O., San Francisco, Calif.

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

12 July 1944.

From: The Commander Task Group 17.12 (ComSubDiv 44).
To : The Commander-in-Chief, United States Fleet.
Via : (1) The Commander-in-Chief, Pacific Fleet.
(2) The Commander Submarine Force, Pacific Fleet.

Subject: War Patrol of Coordinated Attack Group 17.12
from May 16, 1944 to 1 July 1944.

References: (a) War Patrol Report #1. U.S.S. PINTADO.
(b) War Patrol Report #1. U.S.S. PILOTFISH.
(c) War Patrol Report #1. U.S.S. SHARK.
(d) War Patrol Report #6. U.S.S. TUNNY.

Enclosures: (A) Subject War Patrol and Track Chart.
(B) Detailed plans of coordinated patrol and
Track Chart.
(C) Communication Plan.

1.
Enclosure (A) covering the subject war patrol
is herewith submitted. This task group operated west of the
Marianas and in the China Sea, south of Formosa. References
(a), (b), (c) and (d) cover the detail activities of the indi-
vidual ships of Task Group 17.12. This narrative pertains
only to that portion of the patrol where submarines were in
contact with the enemy as a Coordinated Attack Group.

2.
The detail plan for the coordinated patrol and
track chart was prepared enroute to Midway and in area and is
submitted as enclosure (B).

3.
Enclosure (C) is the Communication procedure
used with success by the task group.

[SIGNATURE: L. N. Blair]
L. N. BLAIR.

- 1 -

[STAMP: FILMED]
83426

— page 128 —
Submarine Force, Pacific Fleet

12 July 1944.

ComTaskGroup 17.12
(ComSubDiv 44)
c/o F.P.O., San Francisco, Calif.
C-O-N-F-I-D-E-N-T-I-A-L

From: The Commander Task Group 17.12 (ComSubDiv 44).
To : The Commander-in-Chief, United States Fleet.
Via : (1) The Commander-in-Chief, Pacific Fleet.
 (2) The Commander Submarine Force, Pacific Fleet.

Subject: War Patrol of Coordinated Attack Group 17.12
 from May 16, 1944 to 1 July 1944.

References: (a) War Patrol Report #1. U.S.S. REBADO.
 (b) War Patrol Report #1. U.S.S. PINTADO.
 (c) War Patrol Report #1. U.S.S. SHARK.
 (d) War Patrol Report #6. U.S.S. TUNNY.

Enclosures: (A) Subject War Patrol and Track Chart.
 (B) Detailed plans of coordinated patrol and
 Track Chart.
 (C) Communication Plan.

 1.
 Enclosure (A), covering the subject war patrol
is herewith submitted. This task group operated west of the
Marianas and in the China Sea, south of Formosa. References
(a), (b), (c) and (d) cover the detail activities of the indi-
vidual ships of Task Group 17.12. This narrative pertains
only to that portion of the patrol where submarines were in
contact with the enemy as a Coordinated Attack Group.

 2.
 The detail plan for the coordinated patrol and
track chart was prepared enroute to Midway and in area and is
submitted as enclosure (B).

 3.
 Enclosure (C) is the Communication procedure
used with success by the task group.

 L. N. BLAIR.

- 1 -
83426
[STAMP: FILMED]

— page 129 —
ENCLOSURE "A"

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

A - PROLOGUE

          1.    During the training period in Pearl, the three
          submarines, U.S.S. PINTADO, U.S.S. PILOTFISH and U.S.S. SHARK
          conducted game board problems and was engaged in an exercise
          with an incoming convoy on 9-10 May.

B - NARRATIVE

                                        16 May 1944

          1700 W    Coordinated Attack Group 17.12, consisting of
                    the U.S.S. PINTADO (Flagship), U.S.S. PILOTFISH,
                    and U.S.S. SHARK depart Pearl in accordance with
                    ComTaskForce 17 operation order number 166-44
                    of 15 May, 1944.

                                        16 May 1944
                                        to
                                        20 May 1944

                    Enroute Midway. Exercised in group tactics and
                    communications.

                                        20 May 1944

          0822 Y    Arrived Midway. Held conference with Commanding
                    Officers. Distributed and discussed details of
                    the Patrol Plan, attack and communications.
                    Delayed overnite due to emergency repairs on
                    PILOTFISH and SHARK.

                                        21 May 1944
                                        to
                                        29 May 1944

          0700 Y    Underway. Enroute area. Conducted group tactics
                    and communication drills first two days. Sighted
                    planes on 27, 28 and 29 May.

                                        29 May 1944
                                        to
                                        31 May 1944

                    Entered area and conducted patrol in accordance
                    to plan.

                                        31 May 1944

          0500 K    Received despatch 30106 originated from SILVER-
                    SIDES.

                                        - 2 -

— page 129 —
ENCLOSURE "A"
C-O-N-F-I-D-E-N-T-I-A-L

A - PROLOGUE

     1.     During the training period in Pearl, the three
submarines, U.S.S. PINTADO, U.S.S. PILOTFISH and U.S.S. SHARK
conducted game board problems and was engaged in an exercise
with an incoming convoy on 9-10 May.

B - NARRATIVE

                                        16 May 1944

     1700 VW Coordinated Attack Group 17.12, consisting of
               the U.S.S. PINTADO (Flagship), U.S.S. PILOTFISH,
               and U.S.S. SHARK depart Pearl in accordance with
               ComTaskForce 17 operation order number 166-44
               of 15 May, 1944.

                                        16 May 1944
                                        to
                                        20 May 1944

               Enroute Midway. Exercised in group tactics and
               communications.

                                        20 May 1944

     0822 Y Arrived Midway. Held conference with Commanding
               Officers. Distributed and discussed details of
               the Patrol Plan, attack and communications.
               Delayed overnite due to emergency repairs on
               PILOTFISH and SHARK.

                                        21 May 1944
                                        to
                                        29 May 1944

     0700 Y Underway. Enroute area. Conducted group tactics
               and communication drills first two days. Sighted
               planes on 27, 28 and 29 May.

                                        29 May 1944
                                        to
                                        31 May 1944

               Entered area and conducted patrol in accordance
               to plan.

                                        31 May 1944

     0500 K Received despatch 30106 originated from SILVER-
               SIDES.

                                        - 2 -

— page 130 —
C-O-N-F-I-D-E-N-T-I-A-L

0758 K PINTADO surfaced. Sent despatch to PILOTFISH
          and SHARK to surface. Scouting course 097°,
          scouting speed fifteen knots.

0815 K PILOTFISH surfaced.

0912 K SHARK surfaced.
          Course 097° was an intercepting course which
          would place the three submarines ahead of the
          convoy. The enemy if he continued on his course
          and speed would be contacted about 1500. The
          C.T.G. made two plans - the first, a retiring
          search to the northeast as far as a line drawn
          between SAIPAN and CHICHI JIMA - the second
          retiring search to the southwest. The second
          plan would require the pack to leave the area
          towards Palau. The C.T.G. decided to await
          developments before deciding which one to use.
          At

1300 K Received ComSubPac despatch 310242 giving
          necessary information concerning convoy.

1335 K Moonrise. At

1515 K PINTADO sighted SHARK.
          C.T.G. sent visual message to form scouting
          line 160°T - 340°T. SHARK to south. Scouting
          course 205°T.

1617 K PINTADO sighted PILOTFISH. PINTADO attempted to
          close so as to transmit a visual message.
          However PILOTFISH turned north. At

1645 K PINTADO changed course to 205°T.

1700 K C.T.G. sent despatch to PILOTFISH to form scout-
          ing line bearing 160°T - 340°T scouting distance
          30,000 yards. Course 205°T speed 15 knots. At
          0000 hours course 240°T. PILOTFISH decoded
          despatch incorrectly. At

1903 K Sunset. At

1915 K SHARK sighted three columns of smoke bearing
          226°T from SHARK'S position. SHARK sent despatch.

1944 K PINTADO and PILOTFISH received SHARK'S despatch.

2005 K PINTADO sighted three columns of smoke bearing
          225°T distance about 20 miles. The C.T.G. plotted
          both contacts and found that the convoy was making
          good course 226°T speed 8 knots. At

          - 3 -

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

0758 K PINTADO surfaced. Sent despatch to PILOTFISH
          and SHARK to surface. Scouting course 097°,
          scouting speed fifteen knots.

0815 K PILOTFISH surfaced.

0912 K SHARK surfaced.
          Course 097° was an intercepting course which
          would place the three submarines ahead of the
          convoy. The enemy if he continued on his course
          and speed would be contacted about 1500. The
          C.T.G. made two plans - the first, a retiring
          search to the northeast as far as a line drawn
          between SAIPAN and CHICHI JIMA - the second
          retiring search to the southwest. The second
          plan would require the pack to leave the area
          towards Palau. The C.T.G. decided to await
          developments before deciding which one to use.
          At

1300 K Received ComSubPac despatch 310242 giving
          necessary information concerning convoy.

1335 K Moonrise. At

1515 K PINTADO sighted SHARK.
          C.T.G. sent visual message to form scouting
          line 160°T - 340°T. SHARK to south. Scouting
          course 205°T.

1617 K PINTADO sighted PILOTFISH. PINTADO attempted to
          close so as to transmit a visual message.
          However PILOTFISH turned north. At

1645 K PINTADO changed course to 205°T.

1700 K C.T.G. sent despatch to PILOTFISH to form scout-
          ing line bearing 160°T - 340°T scouting distance
          30,000 yards. Course 205°T speed 15 knots. At
          0000 hours course 240°T. PILOTFISH decoded
          despatch incorrectly. At

1903 K Sunset. At

1915 K SHARK sighted three columns of smoke bearing
          226°T from SHARK'S position. SHARK sent despatch.

1944 K PINTADO and PILOTFISH received SHARK'S despatch.

2005 K PINTADO sighted three columns of smoke bearing
          225°T distance about 20 miles. The C.T.G. plotted
          both contacts and found that the convoy was making
          good course 226°T speed 8 knots. At

          - 3 -

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

this time the PILOTFISH was north of both the
SHARK and PINTADO. The C.T.G. decided to make
the PILOTFISH trailer and the convoy was
making good course 226°T it put the SHARK on
the port flank and PINTADO on the starboard
flank. In order to prevent any misunderstanding
due to change of course of enemy, the C.T.G. at

2023 K sent despatch to SHARK and PILOTFISH "at 20
hours convoy position grid 106 grid 31 enemy
course 226° speed 8 knots". At

2029 K sent despatch to SHARK and PILOTFISH "SHARK take
position on port flank. PINTADO take position
on starboard flank. PILOTFISH take position as
trailer". These messages were both receipted for
by SHARK and PILOTFISH. However it proved to
confuse the SHARK who failed to realize the gist
of the first despatch in relation to the second
which placed her to the eastward of the convoy.
At 2015 the convoy changed course to the north-
west. The convoy was zigzagging radically, and
apparently seems to be changing base course fre-
quently. From 2015 K 31 May to 0300 K 1 June the
enemy zigzagged on some of the following courses:
340°T, 310°T, 180°T, 150°T, 090°T, 030°T, 000°T,
000°T respectively. It confused us for a while.
The SHARK on receipt of the despatch from the C.T.G.
was on the starboard bow of the convoy which was
then on course about northwest. She was to the
eastward of the convoy and in the correct position.
The SHARK however made an end round run astern of
the convoy to the western flank. The PINTADO mean-
time was making an end round run to a position ahead
of the convoy to the western side which was now the
port flank. The PILOTFISH was to the north and
proceeding on a southerly course to join the pack. At

2123 K SHARK made radar contact with SILVERSIDES and ex-
changed recognition signals. At

2223 K SHARK and PINTADO exchanged recognition signals.
Up to this time the convoy had made a complete
circle to its left to a north easterly course leaving
the SHARK, PINTADO and SILVERSIDES astern to the
south and southwest.

2245 K C.T.G. sent visual message to SHARK directing her
to take the eastern side now the starboard flank.
At this time the C.T.G. decided that hereafter he
would not designate the flankers nor the trailer
as it only resulted in unnecessary

- 4 -

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

this time the PILOTFISH was north of both
SHARK and PINTADO. The C.T.G. decided to make
the PILOTFISH trailer. Since the convoy was
making good course 226°T it put the SHARK on
the port flank and PINTADO on the starboard
flank. In order to prevent any misunderstanding
due to change of course of enemy, the C.T.G. at

2023 K sent despatch to SHARK and PILOTFISH "at 20
hours convoy position grid 106 grid 31 enemy
course 226° speed 8 knots". At

2029 K sent despatch to SHARK and PILOTFISH "SHARK take
position on port flank. PINTADO take position
on starboard flank. PILOTFISH take position as
trailer". These messages were both receipted for
by SHARK and PILOTFISH. However it proved to
confuse the SHARK who failed to realize the gist
of the first despatch in relation to the second
which placed her to the eastward of the convoy.
At 2015 the convoy changed course to the north-
west. The convoy was zigzagging radically, and
apparently seems to be changing base course fre-
quently. From 2015 K 31 May to 0300 K 1 June the
enemy zigzagged on some of the following courses:
340°T, 310°T, 180°T, 150°T, 090°T, 030°T, 310°T,
000°T respectively. It confused us for a while.
The SHARK on receipt of the despatch from the C.T.G.
was on the starboard bow of the convoy which was
then on course about northwest. She was to the
eastward of the convoy and in the correct position.
PINTADO meantime was making an end round run to a
position ahead of the convoy to the western side which
was now the port flank. The PILOTFISH was to the
north and proceeding on a southerly course to join the pack. At

2123 K SHARK made radar contact with SILVERSIDES and ex-
changed recognition signals. At

2223 K SHARK and PINTADO exchanged recognition signals.
Up to this time the convoy had made a complete
circle to its left to a north easterly course leaving
the SHARK, PINTADO and SILVERSIDES astern to the
south and southwest.

2245 K C.T.G. sent visual message to SHARK directing her
to take the eastern side now the starboard flank.
At this time the C.T.G. decided that hereafter he
would not designate the flankers nor the trailer
as it only resulted in unnecessary

- 4 -

— page 132 —
C-O-N-F-I-D-E-N-T-I-A-L

confusion.

2300 K SHARK commenced end around to eastward.
      C.T.G. sent despatch "At 2300 convoy's position
      grid 106 grid 88 course 0310T speed 9 X
      zigzagging 350°".

      1 June 1944

0002 K PINTADO made submerged periscope approach #1
      in the bright moon light. PINTADO was unable
      to close as the convoy zigged away.

0040 K PILOTFISH changed course to 211°T to close convoy
      and pack. Noticed S.J. interference on both
      bows. Such interference was most probably
      caused by both SHARK and SILVERSIDES who were
      then on starboard or eastern side of convoy. At

0122 K PINTADO surfaced.

0130 K PILOTFISH changed course to 045°T on the assump-
      tion that he had missed the convoy and was re-
      tiring on convoy's course. This vessel steered
      different courses during the remainder of the
      nite. If the PILOTFISH had made contact with
      number one convoy this pack would probably have
      missed number three and number four convoys
      entirely. Apparently luck was with us. The
      PILOTFISH's decision to go north east placed
      him in a position to contact number three convoy
      later reported by SILVERSIDES. At

0208 K SHARK made radar contact with friendly submarine
      later identified as SILVERSIDES. At

0210 K Moonset. At

0215 K SHARK commenced making surfaced approach #1
      on the quarter of the convoy. At

0220 K SHARK broke off approach #1 when she noticed
      that SILVERSIDES was heading in for an attack.
      SHARK then decided to get ahead of convoy for
      dawn attack. At

0330 K PINTADO regained radar contact with convoy #1. At

0342 K PINTADO and SHARK heard three explosions. These
      explosions were torpedoes exploding at the end
      of their run which had been fired by SILVERSIDES. At

0345 K PINTADO commenced a surface approach (second)

- 5 -

— page 132 —
C-O-N-F-I-D-E-N-T-I-A-L

confusion.

2300 K SHARK commenced end around to eastward.
      C.T.G. sent despatch "At 2300 convoy's position
      grid 106 grid 88 course 0310T speed 9 X
      zigzagging 350°".

      1 June 1944

0002 K PINTADO made submerged periscope approach #1
      in the bright moon light. PINTADO was unable
      to close as the convoy zigged away.

0040 K PILOTFISH changed course to 211°T to close convoy
      and pack. Noticed S.J. interference on both
      bows. Such interference was most probably
      caused by both SHARK and SILVERSIDES who were
      then on starboard or eastern side of convoy. At

0122 K PINTADO surfaced.

0130 K PILOTFISH changed course to 045°T on the assump-
      tion that he had missed the convoy and was re-
      tiring on convoy's course. This vessel steered
      different courses during the remainder of the
      nite. If the PILOTFISH had made contact with
      number one convoy this pack would probably have
      missed number three and number four convoys
      entirely. Apparently luck was with us. The
      PILOTFISH's decision to go north east placed
      him in a position to contact number three convoy
      later reported by SILVERSIDES. At

0208 K SHARK made radar contact with friendly submarine
      later identified as SILVERSIDES. At

0210 K Moonset. At

0215 K SHARK commenced making surfaced approach #1
      on the quarter of the convoy. At

0220 K SHARK broke off approach #1 when she noticed
      that SILVERSIDES was heading in for an attack.
      SHARK then decided to get ahead of convoy for
      dawn attack. At

0330 K PINTADO regained radar contact with convoy #1. At

0342 K PINTADO and SHARK heard three explosions. These
      explosions were torpedoes exploding at the end
      of their run which had been fired by SILVERSIDES. At

0345 K PINTADO commenced a surface approach (second)

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— page 133 —
C-O-N-F-I-D-E-N-T-I-A-L
and closed to 3,900 yards when gun flashes
were seen and there was a splash off the
starboard bow. PINTADO turned away and
found she had not been sighted. So at

0430 K
PINTADO ran in on another surface approach
(number three) and made an attack (number one).
PINTADO closed to about 1,200 yards. At

0437 K
PINTADO fired six torpedoes making five hits
in a large AK (Jerayasu Maru type) and one hit
in an unidentified AK (medium sized). First AK
sank immediately and the second was seen to
explode and go down about thirty minutes later.
Few exciting moments cleared the formation from
which two escorts decided to give chase but soon
gave up hope and returned to what was left of
the convoy which now consisted of one AK and
escorts. At 2341 K and 0445 K radar-reported
pips at ranges of 24,000 yards and 1,200 yards
respectively which were not visible from the
bridge. These pips must have been nice flying
planes as we later believed. In the meantime
the SHARK received a visual message from the
SILVERSIDES that she was clearing the area. At

0400 K
SHARK found herself ahead of number two convoy
which she unknowingly had made contact at range
14,000 yards. At

0440 K
SHARK submerged to radar depth, commencing her
second approach, range about 15,000 yards.
From 0440 K until 0640 K SHARK saw these two
freighters and escorts zigzagging radically
apparently waiting for other ships. At

0524 K
Sunrise. At

0640 K
SHARK saw one freighter and escorts join the
two freighters and their escorts. At

0651 K
PINTADO dove and commenced periscope approach
#4. At

0750 K
Convoy took westerly course. Several escorts
proceeded to north east and commenced search
area in which SHARK was operating dropping
depth charges at random. At

0850 K
Gunboat apparently picked up SHARK by sound and
depth-charged her, dropping nine depth charges.
Total dropped 27. At

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— page 133 —
C-O-N-F-I-D-E-N-T-I-A-L
and closed to 3,900 yards when gun flashes
were seen and there was a splash off the
starboard bow. PINTADO turned away and
found she had not been sighted. So at

0430 K
PINTADO ran in on another surface approach
(number three) and made an attack (number one).
PINTADO closed to about 1,200 yards. At

0437 K
PINTADO fired six torpedoes making five hits
in a large AK (Jerayasu Maru type) and one hit
in an unidentified AK (medium sized). First AK
sank immediately and the second was seen to
explode and go down about thirty minutes later.
Few exciting moments cleared the formation from
which two escorts decided to give chase but soon
gave up hope and returned to what was left of
the convoy which now consisted of one AK and
escorts. At 2341 K and 0445 K radar-reported
pips at ranges of 24,000 yards and 1,200 yards
respectively which were not visible from the
bridge. These pips must have been nice flying
planes as we later believed. In the meantime
the SHARK received a visual message from the
SILVERSIDES that she was clearing the area. At

0400 K
SHARK found herself ahead of number two convoy
which she unknowingly had made contact at range
14,000 yards. At

0440 K
SHARK submerged to radar depth, commencing her
second approach, range about 15,000 yards.
From 0440 K until 0640 K SHARK saw these two
freighters and escorts zigzagging radically
apparently waiting for other ships. At

0524 K
Sunrise. At

0640 K
SHARK saw one freighter and escorts join the
two freighters and their escorts. At

0651 K
PINTADO dove and commenced periscope approach
#4. At

0750 K
Convoy took westerly course. Several escorts
proceeded to north east and commenced search
area in which SHARK was operating dropping
depth charges at random. At

0850 K
Gunboat apparently picked up SHARK by sound and
depth-charged her, dropping nine depth charges.
Total dropped 27. At

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— page 134 —
C-O-N-F-I-D-E-N-T-I-A-L

0053 K PINTADO sighted plane. At
1118 K SHARK surfaced and commenced chase. At
1125 K SHARK sighted smoke bearing 258°T and commenced
closing. At
1126 K SHARK sighted plane. Dove. At
1154 K SHARK surfaced and commenced to close convoy. At
1200 K SHARK transmitted contact report. PILOTFISH
received report and turned west to join. PINTADO
still submerged. At

1330 K PILOTFISH received SILVERSIDES' contact report
on third convoy. Wisely the PILOTFISH decided
to intercept SILVERSIDES and enemy convoy.
PILOTFISH communicated with SILVERSIDES on 450
Kcs. At

1431 K Moonrise. At
1616 K PILOTFISH sighted 5 smokes of third convoy and
tracked from ahead. At

1719 K PINTADO received contact report from SHARK
giving SHARK'S position, bearing and range to
smoke of 1st & 2nd convoy and that SHARK was
trailing ahead of convoy. PINTADO changed
course to north to intercept convoy. At
1727 K PILOTFISH exchanged calls with SILVERSIDES.
SILVERSIDES cleared area. At
1735 K PILOTFISH transmitted contact report. Received
by PINTADO and SHARK. At
1824 K Sunset. At
1943 K SHARK sighted plane and dove. At
1955 K C.T.G. directed PILOTFISH to trail convoy #3
while SHARK and PINTADO completed attacks on
convoys #1 and #2, and then to join PILOTFISH. At
2112 K SHARK surfaced and started search on estimated
convoy's course. At
2143 K PINTADO transmitted "Interrogatory one"
position to SHARK. At

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

0853 K PINTADO sighted plane. At
1118 K SHARK surfaced and commenced chase. At
1125 K SHARK sighted smoke bearing 258°T and commenced
          closing. At
1126 K SHARK sighted plane. Dove. At
1154 K SHARK surfaced and commenced to close convoy. At
1200 K SHARK transmitted contact report. PILOTFISH
          received report and turned west to join. PINTADO
          still submerged. At

1330 K PILOTFISH received SILVERSIDES' contact report
          on third convoy. Wisely the PILOTFISH decided
          to intercept SILVERSIDES and enemy convoy.
          PILOTFISH communicated with SILVERSIDES on 450
          Kcs. At

1431 K Moonrise. At
1616 K PILOTFISH sighted 5 smokes of third convoy and
          tracked from ahead. At

1719 K PINTADO received contact report from SHARK
          giving SHARK'S position, bearing and range to
          smoke of 1st & 2nd convoy and that SHARK was
          trailing ahead of convoy. PINTADO changed
          course to north to intercept convoy. At
1727 K PILOTFISH exchanged calls with SILVERSIDES.
          SILVERSIDES cleared area. At
1735 K PILOTFISH transmitted contact report. Received
          by PINTADO and SHARK. At

1824 K Sunset. At
1943 K SHARK sighted plane and dove. At
1955 K C.T.G. directed PILOTFISH to trail convoy #3
          while SHARK and PINTADO completed attacks on
          convoys #1 and #2, and then to join PILOTFISH. At
2112 K SHARK surfaced and started search on estimated
          convoy's course. At
2143 K PINTADO transmitted "Interrogatory one"
          position to SHARK. At

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

2147 K SHARK made plane contacts on S.D. Dove on
2151 K last contact as plane was closing rapidly. At
2157 K

2218 K SHARK surfaced. Continued search. At

2228 K PILOTFISH sent contact report on enemy (#3 convoy)
          "2200 convoy's position grid 28 grid 38 course 000°T
          speed 8. Sighted 6 ships 3 columns. Zigzagging".
          At

2255 K SHARK transmitted last contact report. "Time
          2031. Have lost contact". At

2300 K PILOTFISH made radar contact with #3 convoy.
          Started tracking. At

2305 K SHARK made plane contact on S.D. Dove. At

2320 K SHARK surfaced. At

2341 K PINTADO made plane contact on S.J. at 24,000
          yards plus strange radar interference. At

2353 K C.T.G. ordered SHARK and PINTADO to stop search
          for #1 and #2 convoys. Join PILOTFISH.
          PINTADO's course 045°T speed 17 knots. At

0004 K PINTADO's lookouts sighted large plane heading
          directly towards ship. PINTADO dove. PINTADO
          has had both S.D. and S.J. in operation continuously.

0037 K PINTADO at radar depth. All clear on S.D. and
          S.J. PINTADO surfaced.

0040 K PINTADO got radar contact on S.J. closing fast
          from 12,000 to 9,000 yards. Dove in a hurry.

0200 K PINTADO surfaced. PINTADO discontinued use of
          S.D. radar and set interference receiver watch
          on APR. Make one sweep every five minutes on
          S.J. when needed for tracking. PINTADO was not
          bothered by night planes again in this area. At

0221 K PILOTFISH sent contact report. PINTADO did not
          receive it. At

0242 K Moonset. At

                                  - 8 -

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

2147 K SHARK made plane contacts on S.D. Dove on
2151 K last contact as plane was closing rapidly. At
2157 K

2218 K SHARK surfaced. Continued search. At

2228 K PILOTFISH sent contact report on enemy (#3 convoy)
          "2200 convoy's position grid 28 grid 38
          speed 8. Sighted 6 ships 3 columns. Zigzagging".
          At

2255 K SHARK transmitted last contact report. "Time
          2031. Have lost contact". At

2300 K PILOTFISH made radar contact with #3 convoy.
          Started tracking. At

2305 K SHARK made plane contact on S.D. Dove. At

2320 K SHARK surfaced. At

2341 K PINTADO made plane contact on S.J. at 24,000
          yards plus strange radar interference. At

2353 K C.T.G. ordered SHARK and PINTADO to stop search
          for #1 and #2 convoys. Join PILOTFISH.
          PINTADO's course 045°T speed 17 knots. At

0004 K PINTADO's lookouts sighted large plane heading
          directly towards ship. PINTADO dove. PINTADO
          has had both S.D. and S.J. in operation continuously.

0037 K PINTADO at radar depth. All clear on S.D. and
          S.J. PINTADO surfaced.

0040 K PINTADO got radar contact on S.J. closing fast
          from 12,000 to 9,000 yards. Dove in a hurry.

0200 K PINTADO surfaced. PINTADO discontinued use of
          S.D. radar and set interference receiver watch
          on APR. Make one sweep every five minutes on
          S.J. when needed for tracking. PINTADO was not
          bothered by night planes again in this area. At

0221 K PILOTFISH sent contact report. PINTADO did not
          receive it. At

0242 K Moonset. At

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0302 K PILOTFISH commenced surface radar approach
(first). PILOTFISH was unable to get in
because of number of escorts interposed
between submarine and convoy. At
0430 K PILOTFISH broke off approach and commenced end
round. At
0520 K Sunrise. At
0937 K PILOTFISH sighted plane. Dove. At
1127 K PILOTFISH surfaced. Resumed end round. At
1138 K PILOTFISH sighted plane and dove. At
1330 K PILOTFISH surfaced. Continued end round. At
1335 K PILOTFISH sent contact report of convoy.
Received by SHARK only.
1514 K Moonrise. At
1658 K PILOTFISH sighted smoke bearing 002° and plane
over convoy. Distance 25 miles.
Meantime SHARK and PINTADO are proceeding on a
course to intercept #3 convoy from latest infor-
mation received from PILOTFISH. (1735 K, 1
June contact report).
0544 K SHARK sighted PINTADO. At
0905 K C.T.G. sent despatch to PILOTFISH to report.
PILOTFISH did not receive despatch. C.T.G.
decides to conduct a retiring search to north-
east to a line from the last enemy's known
position to the westward limits of the Bonin
Islands, covering speeds from 9 to 8 knots. At
1020 K C.T.G. sends despatch to SHARK to form scouting
line bearing 175°T, distance 20 mile. At twelve
hours change course to 031°T.
1200 K PINTADO and SHARK changed course to 035°T and
031°T respectively. C.T.G. realized that convoy
had to be contacted soon as PILOTFISH was
apparently held down by planes and would lose
convoy. Then at
1420 K C.T.G. sent visual message to SHARK to change
to 090°T and at 1600 to change course to 260°T,
conducting a retiring search to the west and
south west covering enemy speeds from 8 knots

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0302 K    PILOTFISH commenced surface radar approach
          (first). PILOTFISH was unable to get in
          because of number of escorts interposed between
          submarine and convoy. At

0430 K    PILOTFISH broke off approach and commenced end
          round. At

0520 K    Sunrise. At

0937 K    PILOTFISH sighted plane. Dove. At

1127 K    PILOTFISH surfaced. Resumed end round. At

1138 K    PILOTFISH sighted plane and dove. At

1330 K    PILOTFISH surfaced. Continued end round. At

1335 K    PILOTFISH sent contact report of convoy.
          Received by SHARK only.

1514 K    Moonrise. At

1658 K    PILOTFISH sighted smoke bearing 002° and plane
          over convoy. Distance 25 miles.
          Meantime SHARK and PINTADO are proceeding on a
          course to intercept #3 convoy from latest infor-
          mation received from PILOTFISH. (1735 K, 1
          June contact report).

0544 K    SHARK sighted PINTADO. At

0905 K    C.T.G. sent despatch to PILOTFISH to report.
          PILOTFISH did not receive despatch. C.T.G.
          decides to conduct a retiring search to north-
          east to a line from the last enemy's known
          position to the westward limits of the Bonin
          Islands, covering speeds from 9 to 8 knots. At

1020 K    C.T.G. sends despatch to SHARK to form scouting
          line bearing 175°T, distance 20 mile. At twelve
          hours change course to 031°T.

1200 K    PINTADO and SHARK changed course to 035°T and
          031°T respectively. C.T.G. realized that convoy
          had to be contacted soon as PILOTFISH was
          apparently held down by planes and would lose
          convoy. Then at

1420 K    C.T.G. sent visual message to SHARK to change
          to 090°T and at 1600 to change course to 260°T,
          conducting a retiring search to the west and
          south west covering enemy speeds from 8 knots

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to 6½ knots.

1658 K PILOTFISH sighted smoke make bearing 002°T.

1700 K C.T.C. sent first serial to ComSubPac which was
        not receipted for. At

1820 K PILOTFISH sent contact report giving enemy
        position at 1703 enemy course 302°T.

1836 K Sunset. At

1918 K SHARK sighted smoke of #3 convoy and transmitted
        contact report. SHARK closed at full speed. At

1928 K PINTADO and PILOTFISH received contact report
        from SHARK. At

2000 K PINTADO sighted SHARK. At

2032 K SHARK made radar contact. Range 23,850 yards,
        enemy course 340°T speed 8.5 knots, zigzagging
        20° on either side of base course. Transmitted
        despatch. At

2050 K PINTADO sighted smoke bearing 195°T distance
        20 miles. At

2053 K PINTADO made radar contact on ship ahead of
        convoy, range 9,500 yards. Strong interference
        on S.J. PINTADO sends despatch asking if
        PILOTFISH or SHARK is ahead, no answer.

2058 K SHARK made radar contact on PINTADO bearing
        120°T range 8,600 yards.

2110 K PINTADO makes radar contact on large convoy and
        close to track. At

2130 K PINTADO apparently picked up by leading escorts
        at a range of 15,000 yards. They started to
        ease over towards PINTADO. At

2204 K PINTADO at a range of 9,700 yards from two
        leading escorts turn tail at flank speed to
        open range. The two escorts were already on
        the job and range continued to close rapidly
        especially on the larger escort. PINTADO
        made 21 Knots but that speed was a little too slow.
        With the range at 6,800 and closing rapidly
        PINTADO at

2219 K Dove. Making record diving time to 200 feet
        and changed course immediately after diving.

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

to 6½ knots.

1658 K PILOTFISH sighted smoke make bearing 002°T.

1700 K C.T.C. sent first serial to ComSubPac which was
        not receipted for. At

1820 K PILOTFISH sent contact report giving enemy
        position at 1703 enemy course 302°T.

1836 K Sunset. At

1918 K SHARK sighted smoke of #3 convoy and transmitted
        contact report. SHARK closed at full speed. At

1928 K PINTADO and PILOTFISH received contact report
        from SHARK. At

2000 K PINTADO sighted SHARK. At

2032 K SHARK made radar contact. Range 23,850 yards,
        enemy course 340°T speed 8.5 knots, zigzagging
        20° on either side of base course. Transmitted
        despatch. At

2050 K PINTADO sighted smoke bearing 195°T distance
        20 miles. At

2053 K PINTADO made radar contact on ship ahead of
        convoy, range 9,500 yards. Strong interference
        on S.J. PINTADO sends despatch asking if
        PILOTFISH or SHARK is ahead, no answer.

2058 K SHARK made radar contact on PINTADO bearing
        120°T range 8,600 yards.

2110 K PINTADO makes radar contact on large convoy and
        close to track. At

2130 K PINTADO apparently picked up by leading escorts
        at a range of 15,000 yards. They started to
        ease over towards PINTADO. At

2204 K PINTADO at a range of 9,700 yards from two
        leading escorts turn tail at flank speed to
        open range. The two escorts were already on
        the job and range continued to close rapidly
        especially on the larger escort. PINTADO
        made 21 Knots but that speed was a little too slow.
        With the range at 6,800 and closing rapidly
        PINTADO at

2219 K Dove. Making record diving time to 200 feet
        and changed course immediately after diving.

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Forty-eight depth charges were dropped some
close, some near and some far. Meanwhile the
SHARK at

2205 K Dove and headed toward convoy (3rd approach). At

2211 K SHARK went to 100 feet and passed under escort
        chasing PINTADO. At

2251 K SHARK returned to periscope depth. SHARK is
        7,000 yards dead ahead of convoy and nearest
        escort will pass clear. At

2305 K SHARK fired four torpedoes at a large tanker
        and a medium sized freighter (Syoan Maru type)
        range 1,900 yards on a 65° track. Made three
        hits in tanker and one in freighter. PILOTFISH
        at this time observed two large heavy columns of
        smoke. SHARK had to go to 100 feet to prevent
        broaching and to evade escort who was now mad. At

2309 K SHARK heard "sinking ship" noise indicating
        that her targets were sinking. At this time
        she was being heavily depth charged until 0230 K,
        morning 2 June. 39 depth charges were dropped.
        PINTADO and PILOTFISH passed thru this area
        within two to eight hours and saw no cripples.
        Both ships must have sunk. At

                                3 June 1944

0055 K PILOTFISH was picked up by escorts on port bow
        of convoy #3 at about 15,000 yards and driven
        off by gun fire and forced to submerge until
        0835 K. 8 depth charges were dropped on the
        PILOTFISH.

0055 K PINTADO surfaced and opened range on escort at
        flank speed. At

0142 K PINTADO commenced end round run. At

0209 K PINTADO made radar contact on escort about ten
        miles astern of convoy. PINTADO was apparently
        not sighted. At

0308 K Moonset. At

0337 K SHARK surfaced. Commenced end round. At

0510 K Sunrise. At

0512 K PINTADO sighted smoke bearing 355°T and shortly

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Forty-eight depth charges were dropped some
close, some near and some far. Meanwhile the
SHARK at

2205 K Dove and headed toward convoy (3rd approach). At

2211 K SHARK went to 100 feet and passed under escort
        chasing PINTADO. At

2251 K SHARK returned to periscope depth. SHARK is
        7,000 yards dead ahead of convoy and nearest
        escort will pass clear. At

2305 K SHARK fired four torpedoes at a large tanker
        and a medium sized freighter (Syoan Maru type)
        range 1,900 yards on a 65° track. Made three
        hits in tanker and one in freighter. PILOTFISH
        at this time observed two large heavy columns of
        smoke. SHARK had to go to 100 feet to prevent
        broaching and to evade escort who was now mad. At

2309 K SHARK heard "sinking ship" noise indicating
        that her targets were sinking. At this time
        she was being heavily depth charged until 0230 K,
        morning 2 June. 39 depth charges were dropped.
        PINTADO and PILOTFISH passed thru this area
        within two to eight hours and saw no cripples.
        Both ships must have sunk. At

                                3 June 1944

0055 K PILOTFISH was picked up by escorts on port bow
        of convoy #3 at about 15,000 yards and driven
        off by gun fire and forced to submerge until
        0835 K. 8 depth charges were dropped on the
        PILOTFISH.

0055 K PINTADO surfaced and opened range on escort at
        flank speed. At

0142 K PINTADO commenced end round run. At

0209 K PINTADO made radar contact on escort about ten
        miles astern of convoy. PINTADO was apparently
        not sighted. At

0308 K Moonset. At

0337 K SHARK surfaced. Commenced end round. At

0510 K Sunrise. At

0512 K PINTADO sighted smoke bearing 355°T and shortly

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C-O-N-F-I-D-E-N-T-I-A-L
thereafter masts became visible. At
0518 K SHARK sighted three columns of smoke bearing
        310°T. At
0714 K SHARK sent contact report. At
0715 K PINTADO and PILOTFISH received SHARK contact
        report. At
0835 K PILOTFISH surfaced. Commenced chase. At
0910 K SHARK sent contact report giving enemy position
        and enemy course 259°T. At
0955 K C.T.G. sent contact report giving enemy's
        position course 260° speed 8. "Attack at
        discretion". At
1353 K Received ComSubPac despatch 030353. At
1555 K SHARK sighted smoke #4 convoy bearing 012°T.
        Convoy was on southerly course. At
1557 K SHARK sent despatch "unknown submarine in
        position grid 27. Grid 131 doubtful SS29
        1500 have lost contact". At
1606 K Moonrise. At
1615 K PINTADO sent despatch, "SHARK contact ahead of
        convoy is PINTADO X enemy course 320° speed 8
        X zigzagging 271-010 X Diving for attack at
        sunset. At
1620 K PINTADO exchanged visual calls with SHARK. At
1654 K PINTADO sighted smoke bearing 340°T (convoy #4).
        Two convoys were in sight, #3 convoy headed for
        the empire empty and #4 convoy loaded headed
        south most probably from Saipan, Truk or
        Palau. What do? C.T.G. decided to let SHARK
        and PILOTFISH take over #4 convoy while PINTADO
        made another attempt on #3 convoy. At
1737 K SHARK sighted masts of convoy #4 thru high
        periscope and found convoy to consist of seven
        or eight ships. At
1754 K PILOTFISH sighted escort vessel trailing eleven
        miles astern of #3 convoy and warned PINTADO
        and SHARK. At

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C-O-N-F-I-D-E-N-T-I-A-L
thereafter masts became visible. At
0518 K SHARK sighted three columns of smoke bearing
        310°T. At
0714 K SHARK sent contact report. At
0715 K PINTADO and PILOTFISH received SHARK contact
        report. At
0835 K PILOTFISH surfaced. Commenced chase. At
0910 K SHARK sent contact report giving enemy position
        and enemy course 259°T. At
0955 K C.T.G. sent contact report giving enemy's
        position course 260° speed 8. Attack at
        discretion. At
1353 K Received ComSubPac despatch 030353. At
1555 K SHARK sighted smoke #4 convoy bearing 012°T.
        Convoy was on southerly course. At
1557 K SHARK sent despatch "unknown submarine in
        position grid 27. Grid 131 doubtful SS250 time
        1500 have lost contact". At
1606 K Moonrise. At
1615 K PINTADO sent despatch, "SHARK contact ahead of
        convoy is PINTADO X enemy course 320° speed 8
        X zigzagging 271-010 X Diving for attack at
        sunset. At
1620 K PINTADO exchanged visual calls with SHARK. At
1654 K PINTADO sighted smoke bearing 340°T (convoy #4).
        Two convoys were in sight, #3 convoy headed for
        the empire empty and #4 convoy loaded headed
        south most probably from Saipan, Truk or
        Palau. What do? C.T.G. decided to have SHARK
        and PILOTFISH take over #4 convoy while PINTADO
        made another attempt on #3 convoy. At
1737 K SHARK sighted masts of convoy #4 thru high
        periscope and found convoy to consist of seven
        or eight ships. At
1754 K PILOTFISH sighted escort vessel trailing eleven
        miles astern of #3 convoy and warned PINTADO
        and SHARK. At

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

1808 K C.T.G. sent despatch to SHARK and PILOTFISH
          "SHARK attack new contact X report enemy speed,
          course, and position to PILOTFISH and PINTADO X
          change to new contact grid 39 grid 108." At

1815 K PILOTFISH and SHARK received despatch from
          C.T.G. At

1820 K Sunset. At

1830 K PILOTFISH sighted smoke of #4 convoy. At

1916 K PINTADO dove and started submerged approach
          #5 and #3 convoy. At

1956 K SHARK sent contact report on #4 convoy "new
          convoy position grid 39 grid 24 course 236° my
          position grid 40 grid 27". At

2000 K PILOTFISH received SHARK contact report. At

2110 K SHARK made radar contact on #4 convoy bearing
          209°T range 22,000 yards. At

2120 K SHARK sent contact report on #4 convoy "Smoke
          bearing 175°T from point grid 39 grid 16 enemy
          course 182°".

2237 K PINTADO surfaced. Unable to close convoy #3.
          Started end round. PINTADO sighted trailing escort,
          astern #3 convoy. At

2300 K SHARK picked up radar interference in direction
          of convoy #4. Believed to be friendly submarine.
          Perhaps so, but it also might have been an
          enemy escort.

2348 K PINTADO started in on surface approach #6 on
          convoy #3. Two escorts closed PINTADO and gave
          chase. PINTADO turned tail at flank speed.
          C.T.G. ordered PINTADO to join SHARK and
          PILOTFISH. At

          4 June 1944

0002 K PILOTFISH sent despatch concerning identity
          of SHARK. At

0010 K SHARK answers affirm. At

0035 K SHARK made radar contact on PILOTFISH bearing
          about 180°T, range 10,000 yards. PILOTFISH
          dove to attack convoy #4 (approach #2). At

          - 13 -
[HANDWRITTEN: 13]

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

1808 K C.T.G. sent despatch to SHARK and PILOTFISH
          "SHARK attack new contact X report enemy speed,
          course, and position to PILOTFISH and PINTADO X
          change to new contact grid 39 grid 108." At
1815 K PILOTFISH and SHARK received despatch from
          C.T.G. At
1820 K Sunset. At
1830 K PILOTFISH sighted smoke of #4 convoy. At
1916 K PINTADO dove and started submerged approach
          #5 and #3 convoy. At
1956 K SHARK sent contact report on #4 convoy "new
          convoy position grid 39 grid 24 course 236° my
          position grid 40 grid 27". At
2000 K PILOTFISH received SHARK contact report. At
2110 K SHARK made radar contact on #4 convoy bearing
          209°T range 22,000 yards. At
2120 K SHARK sent contact report on #4 convoy "Smoke
          bearing 175°T from point grid 39 grid 16 enemy
          course 182°".
2237 K PINTADO surfaced. Unable to close convoy #3.
          Started end round. PINTADO sighted trailing escort,
          astern #3 convoy. At
2300 K SHARK picked up radar interference in direction
          of convoy #4. Believed to be friendly submarine.
          Perhaps so, but it also might have been an
          enemy escort.
2348 K PINTADO started in on surface approach #6 on
          convoy #3. Two escorts closed PINTADO and gave
          chase. PINTADO turned tail at flank speed.
          C.T.G. ordered PINTADO to join SHARK and
          PILOTFISH. At

          4 June 1944

0002 K PILOTFISH sent despatch concerning identity
          of SHARK. At
0010 K SHARK answers affirm. At
0035 K SHARK made radar contact on PILOTFISH bearing
          about 180°T, range 10,000 yards. PILOTFISH
          dove to attack convoy #4 (approach #2). At

          - 13 - [HANDWRITTEN: 3]

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

0045 K SHARK dove to attack convoy #4 (approach #3). At
0313 K SHARK surfaced. Could not close convoy.
          Started end round run. At
0315 K PILOTFISH surfaced. Could not close convoy.
          Commenced end round run. At
0316 K C.T.G. sent second serial to ComSubPac. At
0330 K PILOTFISH made radar and sight contact with
          small ship astern of convoy about 15 miles.
          This ship was the SHARK. At
0345 K Moonset. At
0504 K Sunrise. At
0600 K PINTADO sent despatch "PILOTFISH, SHARK report
          enemy position course and speed". At
0635 K PINTADO sighted PILOTFISH bearing 201°T, and
          started closing. At
0639 K C.T.G. received ComSubPac 032039. At
0654 K PILOTFISH sent her position and submarine
          bearing 033°T which was PINTADO. At
0713 K SHARK sent despatch giving enemy position,
          enemy course 160° speed 9. At
0755 K PINTADO exchanged visual calls with PILOTFISH.
          C.T.G. directed PILOTFISH to form scouting line
          to westward. Commenced search for convoy from
          SHARK's reported enemy position. At
1002 K PILOTFISH sighted smoke. At
1014 K PILOTFISH sent contact report; "Smoke
          bearing 262°T". C.T.G. realizing the difficulty
          of getting in on an enemy convoy, decided to
          have submarines make simultaneous attack. At
1026 K C.T.G. sent despatch "PILOTFISH take position
          ahead of convoy X SHARK take position on star-
          board flank relative bearing 30° X PINTADO
          take position on port flank relative bearing
          330° X PILOTFISH dive for attack at 1600 X
          PINTADO and SHARK attack point 5 hours after".
          SHARK and PILOTFISH received despatch. At

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0045 K SHARK dove to attack convoy #4 (approach #3). At
0313 K SHARK surfaced. Could not close convoy.
          Started end round run. At
0315 K PILOTFISH surfaced. Could not close convoy.
          Commenced end round run. At
0316 K C.T.G. sent second serial to ComSubPac. At
0330 K PILOTFISH made radar and sight contact with
          small ship astern of convoy about 15 miles.
          This ship was the SHARK. At
0345 K Moonset. At
0504 K Sunrise. At
0600 K PINTADO sent despatch "PILOTFISH, SHARK report
          enemy position course and speed". At
0635 K PINTADO sighted PILOTFISH bearing 201°T, and
          started closing. At
0639 K C.T.G. received ComSubPac 032039. At
0654 K PILOTFISH sent her position and submarine
          bearing 033°T which was PINTADO. At
0713 K SHARK sent despatch giving enemy position,
          enemy course 160° speed 9. At
0755 K PINTADO exchanged visual calls with PILOTFISH.
          C.T.G. directed PILOTFISH to form scouting line
          to westward. Commenced search for convoy from
          SHARK's reported enemy position. At
1002 K PILOTFISH sighted smoke. At
1014 K PILOTFISH sent contact report; "Smoke
          bearing 262°T". C.T.G. realizing the difficulty
          of getting in on an enemy convoy, decided to
          have submarines make simultaneous attack. At
1026 K C.T.G. sent despatch "PILOTFISH take position
          ahead of convoy X SHARK take position on star-
          board flank relative bearing 30° X PINTADO
          take position on port flank relative bearing
          330° X PILOTFISH dive for attack at 1600 X
          PINTADO and SHARK attack point 5 hours after".
          SHARK and PILOTFISH received despatch. At

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1248 K C.T.G. sent despatch "When will submarines be
          in position X report enemy course, enemy speed."
          At
1303 K SHARK sent despatch "SHARK in position, enemy
          speed 9 enemy course 151°T". At
1317 K PILOTFISH sent despatch "In position bearing
          163° from convoy will proceed to position ahead
          of convoy". At
1332 K C.T.G. sent despatch: "At 14 hours PILOTFISH
          attack X PINTADO SHARK point 5 hours after".
          Received by SHARK and PILOTFISH. At
1400 K PILOTFISH dove for attack (Approach #3) ahead
          of convoy #4. At
1430 K SHARK (approach #4) and PINTADO (Approach #8)
          dove for attack 30° on either bow of convoy #4.
          Enemy apparently changed base course to his
          right at this time to 180°T. This change put
          the SHARK ahead of convoy, PILOTFISH 30° on
          port bow, and PINTADO 60° on port bow. At
1608 K SHARK fired four torpedoes at passenger freighter
          (Toran Maru type) (second attack). The ship
          sank. SHARK went to 200 feet and escorts
          dropped 49 depth charges. At
1655 K Moonrise. At
1750 K PINTADO surfaced and commenced end round. At
1823 K Sunset. At
1915 K PILOTFISH surfaced, evaded escorts at 13,000
          yards and started end round. At
2014 K SHARK surfaced and started end round and sent
          despatch requesting convoy position. At
2105 K PILOTFISH sent enemy's position. At
2136 K C.T.G. sent despatch "2100 enemy's position grid
          219 grid 40 course 181° speed 9. At
2248 K C.T.G. sent despatch "Enemy course 120° speed
          9 knots zigzagging 090° to 150° X Make night
          attacks". At

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

1248 K C.T.G. sent despatch "When will submarines be
          in position X report enemy course, enemy speed."
          At
1303 K SHARK sent despatch "SHARK in position, enemy
          speed 9 enemy course 151°T". At
1317 K PILOTFISH sent despatch "In position bearing
          163° from convoy will proceed to position ahead
          of convoy". At
1332 K C.T.G. sent despatch: "At 14 hours PILOTFISH
          attack X PINTADO SHARK point 5 hours after".
          Received by SHARK and PILOTFISH. At
1400 K PILOTFISH dove for attack (Approach #3) ahead
          of convoy #4. At
1430 K SHARK (approach #4) and PINTADO (Approach #8)
          dove for attack 30° on either bow of convoy #4.
          Enemy apparently changed base course to his
          right at this time to 180°T. This change put
          the SHARK ahead of convoy, PILOTFISH 30° on
          port bow, and PINTADO 60° on port bow. At
1608 K SHARK fired four torpedoes at passenger freighter
          (Toran Maru type) (second attack). The ship
          sank. SHARK went to 200 feet and escorts
          dropped 49 depth charges. At
1655 K Moonrise. At
1750 K PINTADO surfaced and commenced end round. At
1823 K Sunset. At
1915 K PILOTFISH surfaced, evaded escorts at 13,000
          yards and started end round. At
2014 K SHARK surfaced and started end round and sent
          despatch requesting convoy position. At
2105 K PILOTFISH sent enemy's position. At
2136 K C.T.G. sent despatch "2100 enemy's position grid
          219 grid 40 course 181° speed 9. At
2248 K C.T.G. sent despatch "Enemy course 120° speed
          9 knots zigzagging 090° to 150° X Make night
          attacks". At

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

5 June, 1944

0036 K PINTADO ahead of convoy dove to radar depth
         in bright moonlight and later went to periscope
         depth for nite attack (approach #7). PINTADO
         got in but could not maintain depth control
         as boat got heavy. At

0215 K PINTADO surfaced and started end round. At

0237 K PINTADO made radar contact on convoy #5 bearing
         040°T range 15,000 yards. C.T.G. told PINTADO
         to stay with convoy #4. At

0241 K SHARK sighted large plane. Dove to 150 feet. At

0430 K SHARK surfaced and continued chase. At

0434 K Moonset. At

0501 K SHARK sent despatch: "Surface after dive from
         aircraft my position grid 34 grid 89 X Interrog-
         atory convoy's position". At

0510 K Sunrise. At

0530 K SHARK sighted smoke. Commenced end round. At

0535 K PILOTFISH sent despatch "my position grid 34 -
         grid 62 course 120°T speed 9 K have lost contact".
         At

0610 K C.T.G. sent despatch "enemy position grid 35 -
         grid 41 at 6 hours base course 121°T."
         C.T.G. received ComSubPac despatch 042117. At

0631 K PILOTFISH sent despatch "trailing ahead of
         convoy". At

0710 K PILOTFISH and PINTADO sighted each other.
to       Exchanged information. C.T.G. ordered PILOTFISH
0800 K and PINTADO to make simultaneous attack 15° to
         20° on either bow of convoy. PILOTFISH to
         starboard PINTADO to port. At

0843 K PINTADO submerged for approach #9. At

0902 K PILOTFISH submerged for approach #4. About
         this time the convoy changed her base course
         to the right about 30°. This maneuver put the
         PILOTFISH 10° on her port bow and the PINTADO
         60° on her port bow. It was impossible for
         the PINTADO to close the range. The PILOTFISH

- 16 -
[HANDWRITTEN: 16]

— page 143 —
C-O-N-F-I-D-E-N-T-I-A-L

5 June, 1944

0036 K PINTADO ahead of convoy dove to radar depth
         in bright moonlight and later went to periscope
         depth for nite attack (approach #7). PINTADO
         got in but could not maintain depth control
         as boat got heavy. At

0215 K PINTADO surfaced and started end round. At

0237 K PINTADO made radar contact on convoy #5 bearing
         040°T range 15,000 yards. C.T.G. told PINTADO
         to stay with convoy #4. At

0241 K SHARK sighted large plane. Dove to 150 feet. At

0430 K SHARK surfaced and continued chase. At

0434 K Moonset. At

0501 K SHARK sent despatch: "Surface after dive from
         aircraft my position grid 34 grid 89 X Interrog-
         atory convoy's position". At

0510 K Sunrise. At

0530 K SHARK sighted smoke. Commenced end round. At

0535 K PILOTFISH sent despatch "my position grid 34 -
         grid 62 course 120°T speed 9 K have lost contact".
         At

0610 K C.T.G. sent despatch "enemy position grid 35 -
         grid 41 at 6 hours base course 121°T."
         C.T.G. received ComSubPac despatch 042117. At

0631 K PILOTFISH sent despatch "trailing ahead of
         convoy". At

0710 K PILOTFISH and PINTADO sighted each other.
to       Exchanged information. C.T.G. ordered PILOTFISH
0800 K and PINTADO to make simultaneous attack 15° to
         20° on either bow of convoy. PILOTFISH to
         starboard PINTADO to port. At

0843 K PINTADO submerged for approach #9. At

0902 K PILOTFISH submerged for approach #4. About
         this time the convoy changed her base course
         to the right about 30°. This maneuver put the
         PILOTFISH 10° on her port bow and the PINTADO
         60° on her port bow. It was impossible for
         the PINTADO to close the range. The PILOTFISH

- 16 -
[HANDWRITTEN: 16]

— page 144 —
C-O-N-F-I-D-E-N-T-I-A-L

had the situation well in hand and found herself
ahead of the convoy and about 3,000 yards ahead
of the sound screen. PILOTFISH went to 170 feet
to pass under sound screen. The convoy could
not be picked up by sound. When PILOTFISH returns
to periscope depth the convoy has zigged
radically to the right and had evaded the
attacking submarines. At

0937 K
The SHARK sighted a large plane bearing 0450T
in the direction of the convoy. Distance about
ten miles. Dove. At

1005 K
The SHARK surfaced. Continued end round. At

1358 K
PINTADO surfaced. Commenced end round. At

1444 K
PILOTFISH sent despatch "unable to attack be-
cause of sound escorts X my grid 47-33 X where
is convoy". At

1507 K
SHARK sent despatch "convoy bearing 3290T from
grid 48-78". At

1512 K
PILOTFISH sighted smoke of convoy. At

1530 K
SHARK sent despatch "diving". At

1531 K
SHARK dove ahead of convoy (approach number 6). At

1542 K
C.T.G. sent despatch "convoy's position grid
48-27 X course 1250T X interrogatory message
serial 94 (SHARK's despatch sent at 1507 K). At

1728 K
SHARK fired six torpedoes range 2500 yards.
Got six hits - three in each of two freighters
(large freighter similar to Goyo Maru; medium
size freighter similar to Syoli Maru). SHARK
went to 100 feet and was heavily depth charged
during the next three hours. Total number of
depth charges dropped was sixty-four. About

1730 K
PILOTFISH and PINTADO saw a tremendous explosion
in vicinity of convoy. Smoke rose to an
estimate of 6,000 to 7,000 feet. At

1804 K
Moonrise. At

1827 K
Sunset. At

2000 K
PILOTFISH sighted PINTADO. At

- 17 -
[HANDWRITTEN: 17]

— page 144 —
C-O-N-F-I-D-E-N-T-I-A-L

had the situation well in hand and found herself
ahead of the convoy and about 3,000 yards ahead
of the sound screen. PILOTFISH went to 170 feet
to pass under sound screen. The convoy could
not be picked up by sound. When PILOTFISH returns
to periscope depth the convoy has zigged
radically to the right and had evaded the
attacking submarines. At

0937 K
The SHARK sighted a large plane bearing 0450T
in the direction of the convoy. Distance about
ten miles. Dove. At

1005 K
The SHARK surfaced. Continued end round. At

1358 K
PINTADO surfaced. Commenced end round. At

1444 K
PILOTFISH sent despatch "unable to attack be-
cause of sound escorts X my grid 47-33 X where
is convoy". At

1507 K
SHARK sent despatch "convoy bearing 3290T from
grid 48-78". At

1512 K
PILOTFISH sighted smoke of convoy. At

1530 K
SHARK sent despatch "diving". At

1531 K
SHARK dove ahead of convoy (approach number 6). At

1542 K
C.T.G. sent despatch "convoy's position grid
48-27 X course 1250T X interrogatory message
serial 94 (SHARK's despatch sent at 1507 K). At

1728 K
SHARK fired six torpedoes range 2500 yards.
Got six hits - three in each of two freighters
(large freighter similar to Goyo Maru; medium
size freighter similar to Syoli Maru). SHARK
went to 100 feet and was heavily depth charged
during the next three hours. Total number of
depth charges dropped was sixty-four. About

1730 K
PILOTFISH and PINTADO saw a tremendous explosion
in vicinity of convoy. Smoke rose to an
estimate of 6,000 to 7,000 feet. At

1804 K
Moonrise. At

1827 K
Sunset. At

2000 K
PILOTFISH sighted PINTADO. At

- 17 -
[HANDWRITTEN: 17]

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

2100 K PILOTFISH and PINTADO exchanged information. At
2100 K C.T.G. sent his third serial to ComSubPac.
2100 K PILOTFISH ahead of convoy tracking. At
2135 K PINTADO made radar contact on the convoy, range
23,450 yards. Started tracking. At
2228 K SHARK surfaced. Commenced chase at full speed. At
2258 K SHARK sent despatch "Surfaced my position grid
48-55 K interrogatory convoy's position X 6
hits 2 AKs sunk". At
2325 K C.T.G. sent despatch "At 2300 convoy's position
grid 39-77 course 145°T speed 9". At
2349 K PINTADO submerged for night periscope approach
#10. At

10 June 1944.

0019 K PILOTFISH submerged for night periscope approach
#5. At
0053 K PINTADO fired four torpedoes. PINTADO and
PILOTFISH heard four explosions all within 30
seconds of 0056K, about three minutes after
firing. Due to the close proximity of a near
freighter and being forced down by escorts the
PINTADO was unable to see what ship was hit.
The PILOTFISH was submerged at this time and
was going deep. The SHARK was about 45 to 50
miles to the westward of the convoy and did
not hear explosions. He was too far away to
see any smoke or flame. An AK (Tatuhoru Maru
type) was found missing from convoy next day.
No counter measures such as depth charging was
taken. At
0203 K PINTADO surfaced and commenced end round. At
0300 K C.T.G. received ComSubPac 060039. At
0306 K PILOTFISH surfaced and commenced end round.
PILOTFISH was held down by sound screen a longer
period than the PINTADO. At
0326 K PILOTFISH sighted smoke of convoy #4. At

- 18 -

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

2100 K PILOTFISH and PINTADO exchanged information. At
2100 K C.T.G. sent his third serial to ComSubPac.
2100 K PILOTFISH ahead of convoy tracking. At
2135 K PINTADO made radar contact on the convoy, range
23,450 yards. Started tracking. At
2228 K SHARK surfaced. Commenced chase at full speed. At
2258 K SHARK sent despatch "Surfaced my position grid
48-55 K interrogatory convoy's position X 6
hits 2 AKs sunk". At
2325 K C.T.G. sent despatch "At 2300 convoy's position
grid 39-77 course 145°T speed 9". At
2349 K PINTADO submerged for night periscope approach
#10. At

10 June 1944.

0019 K PILOTFISH submerged for night periscope approach
#5. At
0053 K PINTADO fired four torpedoes. PINTADO and
PILOTFISH heard four explosions all within 30
seconds of 0056K, about three minutes after
firing. Due to the close proximity of a near
freighter and being forced down by escorts the
PINTADO was unable to see what ship was hit.
The PILOTFISH was submerged at this time and
was going deep. The SHARK was about 45 to 50
miles to the westward of the convoy and did
not hear explosions. He was too far away to
see any smoke or flame. An AK (Tatuhoru Maru
type) was found missing from convoy next day.
No counter measures such as depth charging was
taken. At
0203 K PINTADO surfaced and commenced end round. At
0300 K C.T.G. received ComSubPac 060039. At
0306 K PILOTFISH surfaced and commenced end round.
PILOTFISH was held down by sound screen a longer
period than the PINTADO. At
0326 K PILOTFISH sighted smoke of convoy #4. At

- 18 -

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

0526 K Sunrise. At
0538 K Moonset. At
0855 K PINTADO ahead of convoy tracking. Sighted plane.
        dove for approach #11. At
0903 K PILOTFISH sighted plane. Dove. At
1005 K PILOTFISH surfaced. Resumed end round. SHARK
        in sight to southward. At
1007 K SHARK sighted PILOTFISH surfacing, bearing
        005°T distance about 5 miles. At
1015 K SHARK sighted plane. Dove. At
1021 K PILOTFISH sighted plane over convoy. Dove. At
1038 K SHARK surfaced. At
1113 K PINTADO fired six torpedoes at two AKs. Six
to hits - three in each AK - one London Maru type
1115 K and one Cosyu Maru type. Both ships were sunk.
        Went to 100 feet. During the next three hours
        fifty depth charges were dropped. Some directly
        overhead about 100 feet or closer. Personally
        I would say closer. Very trying. At
1122 K SHARK sighted heavy clouds of smoke. At
1208 K SHARK sighted plane. Dove. At
1209 K PILOTFISH sighted plane. Dove. Both PILOTFISH
        and SHARK were hearing explosion, probably
        depth charges, torpedoes and exploding ships. At
1325 K PILOTFISH sighted plane. Remained submerged. At
1352 K SHARK surfaced. Continued to close enemy position.
        At
1512 K PILOTFISH surfaced and commenced chase. At
1524 K SHARK sent despatch: "Dove two times from air
        coverage X Interrogatory convoy's position X
        My position grid 103-85". At
1533 K PILOTFISH sent despatch "15 hours my position
        grid 102-97 X Avoiding air coverage and escorts".
        At

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

0526 K Sunrise. At
0538 K Moonset. At
0855 K PINTADO ahead of convoy tracking. Sighted plane.
          dove for approach #11. At
0903 K PILOTFISH sighted plane. Dove. At
1005 K PILOTFISH surfaced. Resumed end round. SHARK
          in sight to southward. At
1007 K SHARK sighted PILOTFISH surfacing, bearing
          005°T distance about 5 miles. At
1015 K SHARK sighted plane. Dove. At
1021 K PILOTFISH sighted plane over convoy. Dove. At
1038 K SHARK surfaced. At
1113 K PINTADO fired six torpedoes at two AKs. Six
to        hits - three in each AK - one London Maru type
1115 K and one Cosyu Maru type. Both ships were sunk.
          Went to 200 feet. During the next three hours
          fifty depth charges were dropped. Some directly
          overhead about 100 feet or closer. Personally
          I would say closer. Very trying. At
1122 K SHARK sighted heavy clouds of smoke. At
1208 K SHARK sighted plane. Dove. At
1209 K PILOTFISH sighted plane. Dove. Both PILOTFISH
          and SHARK were hearing explosion, probably
          depth charges, torpedoes and exploding ships. At
1325 K PILOTFISH sighted plane. Remained submerged. At
1352 K SHARK surfaced. Continued to close enemy position.
          At
1512 K PILOTFISH surfaced and commenced chase. At
1524 K SHARK sent despatch: "Dove two times from air
          coverage X Interrogatory convoy's position X
          My position grid 103-85". At
1533 K PILOTFISH sent despatch "15 hours my position
          grid 102-97 X Avoiding air coverage and escorts".
          At

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

1620 K SHARK sighted smoke bearing 327°T. At
1621 K PINTADO sighted masts of two AKs and several
        escorts range 12,000. PINTADO unable to close
        as shortly after sighting convoy headed east. At
1630 K SHARK sighted plane. Dove. SHARK was held
        down until arrival of escort who kept the SHARK
        down. At
1626 K PILOTFISH sighted plane. Dove. At
1726 K PINTADO heard one terrific explosion. At
1830 K Sunset. At
1904 K Moonrise. At
1930 K PILOTFISH surfaced. Commenced search for
        convoy. At
1952 K PINTADO surfaced. Commenced search for convoy. At
2028 K C.T.G. sent despatch "Have lost contact X In-
        terrogatory position course and speed of convoy".
        At
2030 K PINTADO sighted large fires on horizon in
        vicinity of attack. Closed but could see nothing
        but burning surface of the water and no pips
        on radar. At
2038 K PILOTFISH sent despatch "19 hours my position
        grid 102-51 X request information". At
2119 K PINTADO continued search and end round. At
2130 K PINTADO saw a large flare up in vicinity of
        attack. Flames and smoke disappeared and was
        seen no more. At
2151 K SHARK surfaced and commenced search. Sent
        despatch "Interrogatory convoy position". At
2155 K C.T.G. sent despatch. "Time 1600 enemy position
        grid 101-79 course 091°T speed 9 X hits 2
        AKs sunk X stay on 2102 Kcs". At
2205 K PILOTFISH made intermittent radar contact at
        32,000 to 28,000 yards. Probably plane. Set
        course to close. At

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

1620 K SHARK sighted smoke bearing 327°T. At
1621 K PINTADO sighted masts of two AKs and several
          escorts range 12,000. PINTADO unable to close
          as shortly after sighting convoy headed east. At
1630 K SHARK sighted plane. Dove. SHARK was held
          down until arrival of escort who kept the SHARK
          down. At
1626 K PILOTFISH sighted plane. Dove. At
1726 K PINTADO heard one terrific explosion. At
1830 K Sunset. At
1904 K Moonrise. At
1930 K PILOTFISH surfaced. Commenced search for
          convoy. At
1952 K PINTADO surfaced. Commenced search for convoy. At
2028 K C.T.G. sent despatch "Have lost contact X In-
          terrogatory position course and speed of convoy".
          At
2030 K PINTADO sighted large fires on horizon in
          vicinity of attack. Closed but could see nothing
          but burning surface of the water and no pips
          on radar. At
2038 K PILOTFISH sent despatch "19 hours my position
          grid 102-51 X request information". At
2119 K PINTADO continued search and end round. At
2130 K PINTADO saw a large flare up in vicinity of
          attack. Flames and smoke disappeared and was
          seen no more. At
2151 K SHARK surfaced and commenced search. Sent
          despatch "Interrogatory convoy position". At
2155 K C.T.G. sent despatch. "Time 1600 enemy position
          grid 101-79 course 091°T speed 9 X hits 2
          AKs sunk X stay on 2102 Kcs". At
2205 K PILOTFISH made intermittent radar contact at
          32,000 to 28,000 yards. Probably plane. Set
          course to close. At

- 20 -

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C-O-N-F-I-D-E-N-T-I-A-L
2246 K PILOTFISH sighted smoke. Commenced tracking. At
2314 K PILOTFISH sent contact report "My position grid
89-128 X convoy bearing 058°T range 35,850 yards".
PILOTFISH started end round. At

7 June 1944
0100 K PILOTFISH sighted small ship astern. It was
the PINTADO. At
0448 K SHARK made plane contact. At
0511 K SHARK dove when plane closed the range. At
0500 K PILOTFISH sighted escort firing. At
0532 K PILOTFISH broke off chase and started westward
to clear the area in compliance with ComSubPac
orders. At
0535 K PINTADO submerged ahead of convoy to make approach
#12. Convoy zigged away and PINTADO could not
close. At
0535 K Sunrise. At
0640 K Moonset. At
0822 K PINTADO sighted plane over the convoy. At
0945 K PINTADO surfaced. Steering course west to clear
area. At
0948 K SHARK sighted plane through periscopes. At
1004 K PILOTFISH sent despatch "7 hours my position
grid 91-107 course 299° speed 15 X have lost
contact have you received ComSubPac message
060039". At
1259 K SHARK surfaced and requested convoy's position.
At
1310 K C.T.G. sent despatch "at 1645 my position grid
93-67 course 300° speed 13 X PILOTFISH take
position in line of bearing 241°T distance
between subs 49,000 yards". At
1323 K C.T.G. sent despatch "SHARK interrogatory
position course speed results X stay on 2102
Kcs". At
- 21 -
[HANDWRITTEN: 21]

— page 148 —
C-O-N-F-I-D-E-N-T-I-A-L
2246 K PILOTFISH sighted smoke. Commenced tracking. At
2314 K PILOTFISH sent contact report "My position grid
          89-128 X convoy bearing 058°T range 35,850 yards".
          PILOTFISH started end round. At

7 June 1944

0100 K PILOTFISH sighted small ship astern. It was
          the PINTADO. At
0448 K SHARK made plane contact. At
0511 K SHARK dove when plane closed the range. At
0500 K PILOTFISH sighted escort firing. At
0532 K PILOTFISH broke off chase and started westward
          to clear the area in compliance with ComSubPac
          orders. At
0535 K PINTADO submerged ahead of convoy to make approach
          #12. Convoy zigged away and PINTADO could not
          close. At
0535 K Sunrise. At
0640 K Moonset. At
0822 K PINTADO sighted plane over the convoy. At
0945 K PINTADO surfaced. Steering course west to clear
          area. At
0948 K SHARK sighted plane through periscopes. At
1004 K PILOTFISH sent despatch "7 hours my position
          grid 91-107 course 299° speed 15 X have lost
          contact have you received ComSubPac message
          060039". At
1259 K SHARK surfaced and requested convoy's position.
          At
1310 K C.T.G. sent despatch "at 1645 my position grid
          91-67 course 300° speed 13 X PILOTFISH take
          position in line of bearing 241°T distance
          between subs 49,000 yards". At
1323 K C.T.G. sent despatch "SHARK interrogatory
          position course speed results X stay on 2102
          Kcs". At

- 21 -
[HANDWRITTEN: 21]

— page 149 —
C-O-N-F-I-D-E-N-T-I-A-L

1343 K SHARK sent despatch "Fuel 40,000 gallons X 8
        torpedoes astern torpedoes bow 2 X badly need
        docking X my position grid 81-67 course 271°
        speed 15 X 4 sunk 1 damaged. At

1450 K C.T.G. sent despatch "SHARK report all results
        to today X rendezvous seventeen hours eighth X
        position 19° north 138° - 30° east". At

1500 K C.T.G. sent despatch "PILOTFISH report
        torpedoes and fuel". At

1515 K SHARK sent despatch "Results to today X convoy
        #3 1 AC sunk 1 AK damaged X convoy #4 1 transport
        sunk 2 AKs sunk". At

1525 K PILOTFISH sent despatch "Torpedoes on board
        twenty-four X fuel fifty nine thousand".

Thus ended seven days and seven nights of continual
operations against an enemy with radar equipped planes and
escorts. Each ship covered a total of at least 2250 miles,
averaging 13.4 knots for a week. The pack made a total of 28
end round runs, twenty-three approaches of which two were
simultaneous and three were very closely coordinated. Made
six attacks, fired thirty torpedoes, made thirty-three gun
hits, sank ten ships (1 AO, 1 APK, 8 AKs), was depth charged seven times,
(total number of depth charges 285) and was under gun fire
three times. Forced the subs down quite often. At

1834 K Sunset. At

2001 K Moonrise. At

2124 K C.T.G. sent fourth serial to ComSubPac. At

8 June 1944.

0800 K PINTADO, PILOTFISH, SHARK and TUNNY rendezvoused
        at 19 north 138-30 east. SHARK gave TUNNY
        information, instruction and codes. C.T.G. gave
        further instructions to pack.

8 June to 19 June 1944.

Made a cruise to China and back. Enroute TUNNY sank a
Sampan by gunfire.

19 June to 22 June 1944.

Covered retirement course of Japanese fleet to Empire during
and after battle of Philippine seas, 18-22 June 1944.

- 22 -
[HANDWRITTEN: 2e]

— page 149 —
C-O-N-F-I-D-E-N-T-I-A-L

1343 K SHARK sent despatch "Fuel 40,000 gallons X 8
          torpedoes astern torpedoes bow 2 X badly need
          docking X my position grid 81-67 course 271°
          speed 15 X 4 sunk 1 damaged. At

1450 K C.T.G. sent despatch "SHARK report all results
          to today X rendezvous seventeen hours eighth X
          position 19° north 138° - 30° east". At

1500 K C.T.G. sent despatch "PILOTFISH report
          torpedoes and fuel". At

1515 K SHARK sent despatch "Results to today X convoy
          #3 1 AC sunk 1 AK damaged X convoy #4 1 transport
          sunk 2 AKs sunk". At

1525 K PILOTFISH sent despatch "Torpedoes on board
          twenty-four X fuel fifty nine thousand".

Thus ended seven days and seven nights of continual
operations against an enemy with radar equipped planes and
escorts. Each ship covered a total of at least 2250 miles,
averaging 13.4 knots for a week. The pack made a total of 28
end round runs, twenty-three approaches of which two were
simultaneous and three were very closely coordinated. Made
six attacks, fired thirty torpedoes, made thirty hits, sank
ten ships, (1 AO, 1 AP, 8 AKs), was depth charged seven times,
(total number of depth charges 285) and was under gun fire
three times. Forced the subs down quite often. At

1834 K Sunset. At

2001 K Moonrise. At

2124 K C.T.G. sent fourth serial to ComSubPac. At

          8 June 1944.

0800 K PINTADO, PILOTFISH, SHARK and TUNNY rendezvoused
          at 19 north 138-30 east. SHARK gave TUNNY
          information, instruction and codes. C.T.G. gave
          further instructions to pack.

          8 June to 19 June 1944.

Made a cruise to China and back. Enroute TUNNY sank a
Sampan by gunfire.

          19 June to 22 June 1944.

Covered retirement course of Japanese fleet to Empire during
and after battle of Philippine seas, 18-22 June 1944.
[HANDWRITTEN: illegible mark]

          - 22 -

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

22 June to 1 July 1944.
Enroute to Majuro for refit in compliance with
ComSubPac orders.

- 23 -

— page 150 —
C-O-N-F-I-D-E-N-T-I-A-L

22 June to 1 July 1944.
Enroute to Majuro for refit in compliance with
ComSubPac orders.

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

C - COMMUNICATIONS

Intra pack communications were excellent using CW on the
2000 band. As soon as the ships were able to understand the
alert and check system and the serial indicator and receipts,
no trouble was experienced. Difficulty was experienced using
the 400 band. VHF is impractical between submarines beyond
6000 yards. Drills were held using the S.D. for signalling by
turning VARIAC control from 0 to 60 and back to 0. However
no results could be obtained. By manipulating the
valve guide on the S.J. double and single pulses were trans-
mitted and received which proved to be very practical and
successful. If the S.J. could be keyed, it could be used for
signalling within 15 to 20 miles.

This pack used the two letter code as made up by
Bushnell. It proved to be very successful. With a few additions
in the body of the code, it would prove to be sufficient for the
needs of inter-pack communications. Visual signalling is tedious
and not satisfactory. The Blasters used a grid for giving positions
of both enemy and submarines. This grid is highly satisfactory
as it can be used in any area.

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

C - COMMUNICATIONS

Intra pack communications were excellent using CW on the
2000 band. As soon as the ships were able to understand the
alert and check system and the serial indicator and receipts,
no trouble was experienced. Difficulty was experienced using
the 400 band. VHF is impractical between submarines beyond
6000 yards. Drills were held using the S.D. for signalling by
turning VARIAC control from 0 to 60 and back to 0. However
no results could be obtained. By manipulating the
valve guide on the S.J. double and single pulses were trans-
mitted and received which proved to be very practical and
successful. If the S.J. could be keyed, it could be used for
signalling within 15 to 20 miles.

This pack used the two letter code as made up by
Bushnell. It proved to be very successful. With a few additions
in the body of the code, it would prove to be sufficient for the
needs of inter-pack communications. Visual signalling is tedious
and not satisfactory. The Blasters used a grid for giving positions
of both enemy and submarines. This grid is highly satisfactory
as it can be used in any area.

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

D - REMARKS

The pack got off to a bad start in that the C.T.G. used poor
judgement in designating port and starboard flankers and trailer
on the night of the 31st of May. There was very little confusion.
Still there would have been none if he had not sent the despatch.
He refrained from making the same error later. The conduct of the
commanding officers under battle conditions were excellent. They
were aggressively persistent and did their best to sink Japanese
shipping. Nothing was wanting in their actions.

These three submarines fought for seven days and seven nights,
continuously under bad sea conditions such as smooth oily sea with
a long swell which made periscope exposures extremely hazardous
maintaining trim at periscope depth difficult. There was bright
moonlight practically all night long. The enemy convoys had day
and night air coverage and planes were equipped with radar that was
efficiently operated. The escorts were active and many of them in
each convoy were radar equipped. The enemy zigs were unpredictable,
irregular and erratic. He changed course frequently. From obser-
vations, there must have been very close coordination between the
planes and escorts. The successful results obtained are due to the
close coordination of the submarines in the pack.

It is believed that both the enemy escorts and planes have
homing devices which are very effective. As soon as the PINTADO
secured transmitting on the S.D. and S.J. (only when actually
needed) and set a receiver watch on the APR and S.J. she had very
little trouble with the planes. Also the escorts were unable to
detect her at ranges beyond 10,000 yards.

The coordinate attack is basicly sound and should be continued
to be used. However there should be more than three submarines.
Four is a better number. In the open sea seven submarines operat-
ing as a pack after two sections of three and a flagship to coor-
dinate both sections, would put the finishing touches to any convoy.
I found that our officers and men on the ships in this pack after
a weeks fighting were exhausted. Had there been three more ships
to make night attacks while we made day attacks, the enemy would
have suffered heavier losses. The seventh ship tracks from ahead
and attacks at a favorable opportunity when the enemy is confused
as after the section attack.

     On the morning of three June, the C.T.G. realized that a
submarine could get in with normal success only if:

     1. The escorts in the subject sector have been drawn off.
     2. The attention of the escorts was maintained on another
        submarine.

- 25 -

— page 152 —
C-O-N-F-I-D-E-N-T-I-A-L
D - REMARKS

The pack got off to a bad start in that the C.T.G. used poor
judgement in designating port and starboard flankers and trailer
on the night of the 31st of May. There was very little confusion.
Still there would have been none if he had not sent the despatch.
He refrained from making the same error later. The conduct of the
commanding officers under battle conditions were excellent. They
were aggressive, persistent and did their best to sink Japanese
shipping. Nothing was wanting in their actions.

These three submarines fought for seven days and seven nights,
continuously under bad sea conditions such as smooth oily sea with
a long swell which made periscope exposures extremely hard.
Maintaining trim at periscope depth difficult. There was bright
moonlight practically all night long. The enemy convoys had day
and night air coverage and planes were equipped with radar that was
efficiently operated. The escorts were active and many of them in
each convoy were radar equipped. The enemy zigs were unpredictable,
irregular and erratic. He changed course frequently. From obser-
vations, there must have been very close coordination between the
planes and escorts. The successful results obtained are due to the
close coordination of the submarines in the pack.

It is believed that both the enemy escorts and planes have
homing devices which are very effective. As soon as the PINTADO
secured transmitting on the S.D. and S.J. (only when actually
needed) and set a receiver watch on the APR and S.J. she had very
little trouble with the planes. Also the escorts were unable to
detect her at ranges beyond 10,000 yards.

The coordinate attack is basicly sound and should be continued
to be used. However there should be more than three submarines.
Four is a better number. In the open sea seven submarines operat-
ing as a pack after two sections of three and a flagship to coor-
dinate both sections, would put the finishing touches to any convoy.
I found that our officers and men on the ships in this pack after
a weeks fighting were exhausted. Had there been three more ships
to make night attacks while we made day attacks, the enemy would
have suffered heavier losses. The seventh ship tracks from ahead
and attacks at a favorable opportunity when the enemy is confused
as after the section attack.

On the morning of three June, the C.T.G. realized that a
submarine could get in with normal success only if:
1. The escorts in the subject sector have been drawn off.
2. The attention of the escorts was maintained on another
submarine.

- 25 -

— page 153 —
C-O-N-F-I-D-E-N-T-I-A-L

3. The submarines made attacks over a large arc ahead of
the convoy sufficient to cover any change of course made
by the enemy.

The first two were illustrated on the early morning of
one June when the SILVERSIDES occupied the escorts attention
permitting the PINTADO to come in on the "off" side. Again
on the night of two June when the two escorts, - one on the
ahead, portside and one from the port bow, - chased the PINTADO.
The SILVERSIDES was able to get in through the gap made by
the absence of the two enemy escorts. During the first, second
and early hours of third June, the anti-submarine activity of the
convoy maneuvers fouled the PILOTFISH's first, second and
third approaches, the PINTADO's first, second and third approaches
and the SHARK's first and third approaches.

The C.T.G. discussed the situation with the commanding officer
of the PINTADO. The C.T.G. planned a simultaneous approach in which
at least one submarine would get in an attack and there was a
probability that two or the three submarines would be able to attack.
This plan would confuse the enemy to such an extent that individual
attacks according to doctrine could be made later with some degree
of success. The enemy would believe that two or three submarines
were attacking each time simultaneously. Apparently to such
an extent that after the third attack by the PINTADO,
the convoy was so confused that they practically stopped in the
water with only one or two escorts for protection. Thus the
simultaneous attack was tried and proved to be successful.

Three submarines on an arc - one ahead of the convoy and
two placed thirty degrees on either bow covers changes of enemy
courses up to 60° right or left and insures a large degree of
success.

In most cases, the Jap escorts were placed ahead of the
convoy, forward and aft on each beam and astern. Number three convoy
had inner and outer screen. Number two and number three convoy
had a trailing escort about ten miles astern.

Remarks made during the engagements that later became by-words:

"Bring her up to test depth"
"Slow to normal flank speed"
"Close in the spread so that they will all hit"
"I don't like the situation but I will attack"
"Stand here during depth charge, this machine has never
been hit"
"The situation is now critical, take her down to 450 feet"
"That escort is closing fast with a mouth full of teeth"

- 26 -

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

3. The submarines made attacks over a large arc ahead of
the convoy sufficient to cover any change of course made
by the enemy.

The first two were illustrated on the early morning of
one June when the SILVERSIDES occupied the escorts attention
permitting the PINTADO to come in on the "off" side. Again
on the night of two June when the two escorts, - one on the
ahead, portside and one from the port bow, - chased the PINTADO.
The SILVERSIDES was able to get in through the gap made by
the absence of the two enemy escorts. During the first, second
and early hours of third June, the anti-submarine activity of the
convoy maneuvers fouled the PILOTFISH's first, second and
third approaches, the PINTADO's first, second and third approaches
and the SHARK's first and third approaches.

The C.T.G. discussed the situation with the commanding officer
of the PINTADO. The C.T.G. planned a simultaneous approach in which
at least one submarine would get in an attack and there was a
probability that two or the three submarines would be able to attack.
This plan would confuse the enemy to such an extent that individual
attacks according to doctrine could be made later with some degree
of success. The enemy would believe that two or three submarines
were attacking each time simultaneously. Apparently to such
an extent that after the third attack by the PINTADO,
the convoy was so confused that they practically stopped in the
water with only one or two escorts for protection. Thus the
simultaneous attack was tried and proved to be successful.

Three submarines on an arc - one ahead of the convoy and
two placed thirty degrees on either bow covers changes of enemy
courses up to 60° right or left and insures a large degree of
success.

In most cases, the Jap escorts were placed ahead of the
convoy, forward and aft on each beam and astern. Number three convoy
had inner and outer screen. Number two and number three convoy
had a trailing escort about ten miles astern.

Remarks made during the engagements that later became by-words:

"Bring her up to test depth"
"Slow to normal flank speed"
"Close in the spread so that they will all hit"
"I don't like the situation but I will attack"
"Stand here during depth charge, this machine has never
been hit"
"The situation is now critical, take her down to 450 feet"
"That escort is closing fast with a mouth full of teeth"

- 26 -

— page 154 —
C-O-N-F-I-D-E-N-T-I-A-L

E - SUMMARY

The Blair's Blasters, consisting of the PINTADO, PILOTFISH
and SHARK as a task group under the command of Captain L.N. Blair
left for patrol on the 16th May, 1944. The commanding officers,
Lieut. Comdr. B.A. Clarey, Lieut. Comdr. R.H. Close and Lieut. Comdr.
E.N. Blakely had their first commands. Because of the excellent
cooperation of the commanding officers and the close coordination
of the submarines in the pack, this task group sank and probably
sank ten enemy ships (1 AO, 1 APK and 8 AKS) of which six ships
(1 APK and 5 AKS) were filled with troops, ammunition and supplies
and enroute to Saipan to arrive the evening 7 June. The following
digest is hereby submitted:

1. Period - 0758, 31 May, 1944 to 0945, 7 June 1944

(Seven days and seven nights of continuous
work such as searching and end round runs
at high speed; day and night periscope
approaches; surfaced and submerged radar
approaches and attacks against an enemy
using active anti-submarine measures).

                                PINTADO   SHARK   PILOTFISH   TOTAL
2 - End round runs
    (started or completed)           10       9           9      28
3 - Number of approaches             12       6           5      23
4 - Number of attacks                 3       3           0       6
5 - Number of torpedoes fired        16      14           0      30
6 - Number of torpedo hits           16      14           0      30
7 - Number of ships sunk              4       4           0       8
8 - Number of ships probably
    sunk                              1       1           0       2
9 - Approximate tonnage          36,249  37,790           0  74,039
10 - Number of plane contacts         6      14           7      27
11 - Number of ship contacts          5       8           7      20
12 - Miles steaming                2250    2250        2250    6750
13 - Average speed                                          13.4 knots
14 - Depth charges dropped           98     179           8     285
15 - Gunfire                          1                 2       3

Total number contacts during patrol.

Plane                                 9      17          20      46
Ship                                  5      12          10      27

The U.S.S. TUNNY joined the pack on 9 June. The U.S.S. SHARK
was detached on the same date.

- 27 -

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

E - SUMMARY

The Blair's Blasters, consisting of the PINTADO, PILOTFISH
and SHARK as a task group under the command of Captain L.N. Blair
left for patrol on the 16th May, 1944. The commanding officers,
Lieut. Comdr. B.A. Clarey, Lieut. Comdr. R.H. Close and Lieut. Comdr.
E.N. Blakely had their first commands. Because of the excellent
cooperation of the commanding officers and the close coordination
of the submarines in the pack, this task group sank ten ships
(1 AO, 1 APK and 8 AKS) of which six ships
(1 APK and 5 AKS) were filled with troops, ammunition and supplies
and enroute to Saipan to arrive the evening 7 June. The following
digest is hereby submitted:

1. Period - 0758, 31 May, 1944 to 0945, 7 June 1944

(Seven days and seven nights of continuous
work such as searching and end round runs
at high speed; day and night periscope
approaches; surfaced and submerged radar
approaches and attacks against an enemy
using active anti-submarine measures).

| | PINTADO | SHARK | PILOTFISH | TOTAL |
|---|---|---|---|---|
| 2 - End round runs (started or completed) | 10 | 9 | 9 | 28 |
| 3 - Number of approaches | 12 | 6 | 5 | 23 |
| 4 - Number of attacks | 3 | 3 | 0 | 6 |
| 5 - Number of torpedoes fired | 16 | 14 | 0 | 30 |
| 6 - Number of torpedo hits | 16 | 14 | 0 | 30 |
| 7 - Number of ships sunk | 4 | 4 | 0 | 8 |
| 8 - Number of ships probably sunk | 1 | 1 | 0 | 2 |
| 9 - Approximate tonnage | 36,249 | 37,790 | 0 | 74,039 |
| 10 - Number of plane contacts | 6 | 14 | 7 | 27 |
| 11 - Number of ship contacts | 5 | 8 | 7 | 20 |
| 12 - Miles steaming | 2250 | 2250 | 2250 | 6750 |
| 13 - Average speed | | | | 13.4 knots |
| 14 - Depth charges dropped | 98 | 179 | 8 | 285 |
| 15 - Gunfire | 1 | | 2 | 3 |

Total number contacts during patrol.

| | PINTADO | SHARK | PILOTFISH | TOTAL |
|---|---|---|---|---|
| Plane | 9 | 17 | 20 | 46 |
| Ship | 5 | 12 | 10 | 27 |

The U.S.S. TUNNY joined the pack on 9 June. The U.S.S. SHARK
was detached on the same date.

- 27 -

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

19 May 1944.

From: Commander Task Group 17.12
To: Task Group 17.12.
Subject: Information and directive supplementing reference (a).
Reference: (a) C.T.F. Operation Order 166 - 44 and Annex A.

A. General information and conditions:

1. Apparently Japanese convoys make passage along
Bonin Islands direct to Saipan and Guam.

2. Shipping is expected to be on the increase through
areas 14 B and C.

3. Japanese are tending towards larger but less
frequent convoys.

4. Escorts are believed to be equipped with Radar and
Radar detecting equipment.

5. Patrol planes are equipped with Radar and Radar
detecting equipment.

6. Japanese task forces may be concentrating in the
Bonins, and points to Westward of a line thru Empire
to Palau.

7. Enemy convoys are reported to have speed of 7.5 to
9 knots.

8. Radar stations on and can pick up SD radiation
at about 76000 yards. (38 miles).

9. Shore stations can pick up subs on radar at
seven miles.

10. Radio communications except VHF can be detected
and DF.

11. Submarines greatest factors for success of opera-
tions are:
1. Secrecy.
2. Cooperation.
3. Complete understanding of "what we are to do"
and "do it accordingly to plan".

- 28 - ENCLOSURE "B"

— page 155 —
C-O-N-F-I-D-E-N-T-I-A-L

19 May 1944.

From: Commander Task Group 17.12
To: Task Group 17.12.
Subject: Information and directive supplementing reference (a).
Reference: (a) C.T.F. Operation Order 166 - 44 and Annex A.

A. General information and conditions:

1. Apparently Japanese convoys make passage along
Bonin Islands direct to Saipan and Guam.

2. Shipping is expected to be on the increase through
areas 14 B and C.

3. Japanese are tending towards larger but less
frequent convoys.

4. Escorts are believed to be equipped with Radar and
Radar detecting equipment.

5. Patrol planes are equipped with Radar and Radar
detecting equipment.

6. Japanese task forces may be concentrating in the
Bonins, and points to Westward of a line thru Empire
to Palau.

7. Enemy convoys are reported to have speed of 7.5 to
9 knots.

8. Radar stations on and can pick up SD radiation
at about 76000 yards. (38 miles).

9. Shore stations can pick up subs on radar at
seven miles.

10. Radio communications except VHF can be detected
and DF.

11. Submarines greatest factors for success of opera-
tions are:
1. Secrecy.
2. Cooperation.
3. Complete understanding of "what we are to do"
and "do it accordingly to plan".

- 28 - ENCLOSURE "B"

— page 156 —
C-O-N-F-I-D-E-N-T-I-A-L

12. Fenno pack is operating in eleven Dog. This pack
might work in conjunction with the Fenno Ferrets.

13. Area 11 D - Because of Army Air Force bombings
shipping is believed to be moved at least one-hundred miles
off shore.

14. China is broadcasting contact reports of convoys
on 4155 Kcs.

15. Radar and periscope visibility submerged at fifty-
foot is assumed to be twelve miles. High periscope visibility
on surface is about fifteen miles.

16. Submarines will cruise as follows:
1. Zigzag.
2. 12.5 knots to area.
3. 12 knots on surface in area during daylight.
4. 2 knots submerged in area during daylight.
5. 8 knots on surface in area during dark.

17. From a survey of plotting contacts of other
submarines the following is noted:

1. Convoys apparently leave the empire and in
general go straight south following longitude lanes mainly be-
tween 137° to 140° E as far south as twenty-two degrees North
to twenty degrees North then proceed direct to destination.
2. Convoys follow close to the Western and
Eastern boundaries of the SOUTHERN ISLANDS and then usually
along the Western boundary of the MARIANAS to destination south
and southeast.
3. Task Forces generally leave the Empire from
OSUMI KAIYO and sometimes from BUNGO SUIDO crossing direct to
OGASAWARA GUNTO and then direct south to destination. They
apparently be kept under air coverage from shore base planes.
Sometimes they proceed direct to the South.

18. General bearing of these routes through Area 14
Baker and Charlie are from 330° to 350°T.

19. Convoys generally pass to the Westward of the
NANSEI SHOTO or SOUTHWESTERN ISLANDS and then both Eastward
and Westward of Formosa. Convoys to Eastward Pass thru BASHI
CHANNEL but usually hug the coast of FORMOSA passing Westward
of KOTO SHO or Points South. Some convoys proceed direct from KAO
or Points South. Some convoys proceed direct from Empire
along Western side of SOUTHWESTERN ISLANDS to channels between
FORMOSA and LUZON.

- 29 - ENCLOSURE "B"

— page 156 —
C-O-N-F-I-D-E-N-T-I-A-L

12. Fenno pack is operating in eleven Dog. This pack
might work in conjunction with the Fenno Ferrets.

13. Area 11 D - Because of Army Air Force bombings
shipping is believed to be moved at least one-hundred miles
off shore.

14. China is broadcasting contact reports of convoys
on 4155 Kcs.

15. Radar and periscope visibility submerged at fifty-
foot is assumed to be twelve miles. High periscope visibility
on surface is about fifteen miles.

16. Submarines will cruise as follows:
1. Zigzag.
2. 12.5 knots to area.
3. 12 knots on surface in area during daylight.
4. 2 knots submerged in area during daylight.
5. 8 knots on surface in area during dark.

17. From a survey of plotting contacts of other
submarines the following is noted:

1. Convoys apparently leave the empire and in
general go straight south following longitude lanes mainly be-
tween 137° to 140° E as far south as twenty-two degrees North
to twenty degrees North then proceed direct to destination.
2. Convoys follow close to the Western and
Eastern boundaries of the SOUTHERN ISLANDS and then usually
along the Western boundary of the MARIANAS to destination south
and southeast.
3. Task Forces generally leave the Empire from
OSUMI KAIYO and sometimes from BUNGO SUIDO crossing direct to
OGASAWARA GUNTO and then direct south to destination. They
apparently be kept under air coverage from shore base planes.
Sometimes they proceed direct to the South.

18. General bearing of these routes through Area 14
Baker and Charlie are from 330° to 350°T.

19. Convoys generally pass to the Westward of the
NANSEI SHOTO or SOUTHWESTERN ISLANDS and then both Eastward
and Westward of Formosa. Convoys to Eastward Pass thru BASHI
CHANNEL but usually hug the coast of FORMOSA passing Westward
of KOTO SHO or Points South. Some convoys proceed direct from KAO
or Points South. Some convoys proceed direct from Empire
along Western side of SOUTHWESTERN ISLANDS to channels between
FORMOSA and LUZON.

- 29 - ENCLOSURE "B"

— page 157 —
C-O-N-F-I-D-E-N-T-I-A-L

20. North of twenty degrees latitude, convoy routes
generally are between one-hundred twenty-eight east and China
coast.

21. The search is divided into three phases.
1st. Phase from 27 May to dark, 8 June.
2nd. Phase from dark 8 June to Sunrise 14 June.
3rd. Phase from sunrise 14 June to sunset
28 June - plus run back to base.

PHASE I

a. Phase I covers a complete sweep of Area 14 Baker and Charlie.
The plan was to patrol across the northern part of an
western, southern and northern boundaries leaving the area south of
latitude nineteen north the evening of June 8. The patrol was such
that the scouts along the southern boundary would cover convoys en-
tering area from north after the scouts had made the first northern
sweep. The second northern sweep would cover convoys entering the
area from the south after the submarines had made the southern
sweep.

b. The scouting line (060° - 240°) covers all courses normal to
convoy routes to and from Empire and MARIANAS and CAROLINE ISLANDS.
Also it provides that each submarine will be clear of the waters of
the submarine ahead.

c. Submarines are submerged during the day and on the surface
at night.

PHASE II

a. Phase 2 is similar to phase I except that all patrolling is
done on the surface.

b. Revision of this phase on June 9 was necessary because of the
lack of fuel.

- 30 - ENCLOSURE "B"

— page 157 —
C-O-N-F-I-D-E-N-T-I-A-L

20. North of twenty degrees latitude, convoy routes
generally are between one-hundred twenty-eight east and China
coast.

21. The search is divided into three phases.
1st. Phase from 27 May to dark, 8 June.
2nd. Phase from dark 8 June to Sunrise 14 June.
3rd. Phase from sunrise 14 June to sunset
28 June - plus run back to base.

PHASE I

a. Phase I covers a complete sweep of Area 14 Baker and Charlie.
The plan was to patrol across the northern part of an
western, southern and northern boundaries leaving the area south of
latitude nineteen north the evening of June 8. The patrol was such
that the scouts along the southern boundary would cover convoys en-
tering area from north after the scouts had made the first northern
sweep. The second northern sweep would cover convoys entering the
area from the south after the submarines had made the southern
sweep.

b. The scouting line (060° - 240°) covers all courses normal to
convoy routes to and from Empire and MARIANAS and CAROLINE ISLANDS.
Also it provides that each submarine will be clear of the waters of
the submarine ahead.

c. Submarines are submerged during the day and on the surface
at night.

PHASE II

a. Phase 2 is similar to phase I except that all patrolling is
done on the surface.

b. Revision of this phase on June 9 was necessary because of the
lack of fuel.

- 30 - ENCLOSURE "B"

— page 158 —
C-O-N-F-I-D-E-N-T-I-A-L

PHASE III

a. Area D is quite restricted for this type of patrolling.
A careful consideration was given to assigned patrols in small
areas. This plan did not appear favorable as it lost the advan-
tages of the coordinated attack and unity and cooperation of the
pack.

b. Submarines are kept twenty-five to thirty miles away from
shoals because fishing fleets operate in these vicinities. This
distance also provides a factor of safety because of irregular
currents and the scarcity of being able to obtain good fixes due to
poor weather conditions.

c. Several days will be spent to the eastward of the island
chain between FORMOSA and LUZON in hopes of intercepting traffic
going from northern ports and passing along the eastern
shores of FORMOSA, the island chain and PHILIPPINES enroute to ports south.

d. Much thought has been given to establishing a scouting line -
station patrol during day submerged and moving patrol at night -
in particular between Cape BOJEADOR, LUZON and the one-hundred
fathom curve southeast of a point, latitude twenty-two north and
longitude one-hundred eighteen east. This course of action is
eliminated because of the departure of the TUNNY on twenty June
and incomplete coverage of the total area. However this plan would
cover all convoy routes running north and south in the CHINA sea.
It is the shortest distance across that part of the CHINA sea for
total patrolling of convoy routes.

e. Revision was made on 9 June because the size of the area
was increased and the date of entry advanced from the 14th June to
12th June.

ANNEX A - Written Plan and Revisions.

ANNEX B - Patrol Instructions for PINTADO, SHARK and PILOTFISH.

ANNEX C - Plan for Simultaneous Attack.

- 31 - ENCLOSURE "B"

— page 158 —
C-O-N-F-I-D-E-N-T-I-A-L

PHASE III

a. Area D is quite restricted for this type of patrolling.
A careful consideration was given to assigned patrols in small
areas. This plan did not appear favorable as it lost the advan-
tages of the coordinated attack and unity and cooperation of the
pack.

b. Submarines are kept twenty-five to thirty miles away from
shoals because fishing fleets operate in these vicinities. This
distance also provides a factor of safety because of irregular
currents and the scarcity of being able to obtain good fixes due to
poor weather conditions.

c. Several days will be spent to the eastward of the island
chain between FORMOSA and LUZON in hopes of intercepting traffic
going from northern ports and passing along the eastern
shores of FORMOSA, the island chain and PHILIPPINES enroute to ports south.

d. Much thought has been given to establishing a scouting line -
station patrol during day submerged and moving patrol at night -
in particular between Cape BOJEADOR, LUZON and the one-hundred
fathom curve southeast of a point, latitude twenty-two north and
longitude one-hundred eighteen east. This course of action is
eliminated because of the departure of the TUNNY on twenty June
and incomplete coverage of the total area. However this plan would
cover all convoy routes running north and south in the CHINA sea.
It is the shortest distance across that part of the CHINA sea for
total patrolling of convoy routes.

e. Revision was made on 9 June because the size of the area
was increased and the date of entry advanced from the 14th June to
12th June.

ANNEX A - Written Plan and Revisions.

ANNEX B - Patrol Instructions for PINTADO, SHARK and PILOTFISH.

ANNEX C - Plan for Simultaneous Attack.

- 31 - ENCLOSURE "B"

— page 159 —
ANNEX (A).
| Date & Time | Sunrise | Sunset | Position | | Made Good | | Miles Run | Scouting | | Remarks |
|---|
| | | | Latitude | Longitude | Course | Speed | | Line Bearing | Distance | |
| | | | | | 267°T | 12.5Kts. | | 000 | 10000 Yds. | Depart Midway |
| 20 May (+M) | | 1846 | 0700 | 21 May | (+M) | | | | | | | | | (21 May; 1630 GCT) |
| 0430 | 0507 | 1846 | 28°-08'N | 179°-39'W | " | " | 115.0 | " | " | At 0700(+M) change |
| 0700 | | | 28°-08'N | 179°-35'W | " | " | | " | " | Signal drills Visual | [ROTATED TEXT: date of month to 22th May. and V.H.F., Ships drills.] |
| 22 May | (+M) | | | | | | | | | (22 May; 1630 GCT) |
| 0430 | 0507 | 1846 | 28°-00'N | 177°-10'E | " | " | 170.6 | " | " | Signal drills, Visual |
| 0700 | | | | | " | " | | " | " | and V.H.F. Ships | [ROTATED TEXT: drills. 1700 (-M) C and V.H.F. Ships C Zone Time (-L).] |
| 23 May | (-M) | | | | | | | | | (23 May; 1630 GCT) |
| 0430 | 0537 | 1817 | 27°-53'N | 174°-50'E | " | " | 135.6 | " | " | Signal drills, Visual |
| 0700 | | | 27°-53'N | 174°-38'E | " | " | | " | " | and V.H.F. Ships |
| 1817 | | | 27°-47'N | 171°-17'E | " | " | 171.3 | " | " | drills. 1700 (-M) C | [ROTATED TEXT: and] |
| 24 May | (-L) | | | | | | | | | (24 May; 1630 GCT) |
| 0451 | 0451 | 1845 | 27°-39'N | 168°-45'E | " | " | 132.5 | 087°T | 14000 Yds. | Change bearing of S.D. |
| 0700 | | | | | " | " | | " | " | increase S.D. |
| 1845 | | | | | " | " | 174.6 | " | " | [ROTATED TEXT: etime] |
| 25 May | (-L) | | | | | | | | | (25 May; 1630 GCT) |
| 0514 | 0514 | 1908 | 27°-31'N | 165°-30'E | " | " | 130 | 051°T | 30,000 Yds. | Rendezvous-cc to 23 |
| 0908 | | | | | " | " | | " | " | scouting distance to |
| 1731 | | | | | " | " | 173.8 | " | " | [ROTATED TEXT: 1° and then increase to 15 miles.] |
| 26 May | (-K) | | | | | | | | | (26 May; 1630 GCT) |
| 0436 | 0436 | 1831 | 27°-24'N | 163°-02'E | " | " | 171.9 | " | " | |
| 0908 | | | | | " | " | | " | " | |
| 1831 | | | | | " | " | 171.3 | " | " | |
| 27 May | (-K) | | | | | | | | | (27 May; 1630 GCT) |
| 0306 | 0501 | 1846 | 27°-11'N | 157°-17'E | " | " | 171.3 | " | " | |
| 0501 | | | 27°-03'N | 157°-03'E | " | " | | " | " | |
| 1846 | | | 27°-00'N | 152°-00'E | " | " | 171.9 | " | " | |

— page 160 —
ANNEX (A)
| Date & Time | Sunrise (-K) | Sunset (-K) | Position Latitude | Position Longitude | Made Good Course | Made Good Speed | Scouting Line Bearing | Scouting Distance | Remarks |
|---|
| 28 May | (-K) | (-K) | 23°-29'N | 147°-21'E | 231°T | 12.5Kts. | 060°T | 30,000 yds. | Enter area Each ship |
| 0524 | 0524 | 1858 | | | | | | | CC to 240°T so as to |
| 1858 | | | | | | | | | on passing into area | to adjust SL |
| 28 May | 0524 (-K) | | | 21°-44'N | 144°-55'E | " | " | 240°T | " | " |
| 1858 (-K) | 29 May | (-K) | | | | | | | | | Dive, keep periodic |
| 0034 | 0548 | | 21°-00'N | 144°-00'E | 240°T | 12.5Kts. | " | " | listen. |
| 0548 (-K) | 29 May | Surface. |
| 0149 | | | 20°-42'N | 143°-21.5'E | 245°T | 8.0Kts. | " | " | |
| 0457 (-K) | 29 May | " |
| 0503 | | | 20°-29.5'N | 142°-52'E | " | 2.0Kts. | " | " | |
| 30 May | (-K) | (-K) | | | | | | | Dive CS |
| 0034 | 0548 | | 19°-58'N | 141°-41'E | 217° | 8.0Kts. | 060°T | 30,000 Yds. | |
| 0548 (-K) | 30 May | Dive CC |
| 0503 (K) | | | 19°-34.5'N | 141°-21.5'E | 217° | 2 | 240°T | " | |
| 31 May | (-K) | (-K) | | | | | | | Surface CS |
| 0034 | 0548K | 1903K | 18°-35.5'N | 140°-33'E | 184° | 8 | " | " | |
| 0548 | 1903 | 31 May | Surface CC |
| 0503 (K) | | | 18°-06.5'N | 140°-30.5'E | " | 2 | " | " | |
| 1 June | (-K) | (-K) | | | | | | | Rendezvous CS |
| 0034 | 0548K | 1903K | 17°-09.5'N | 140°-26'E | 184° | 8 | " | " | |
| 0548 | 1903 | 1 June | Dive CC |
| 0503 (K) | | | 16°-52'N | 140°-25'E | 086° | 2 | " | " | |
| 2 June | (-K) | (-K) | | | | | | | Surface SS |
| 0034 | 0548K | 1904K | 16°-53'N | 140°-56'E | 086° | 8 | " | " | |
| 0548 | 1904 | 2 June | Dive CS |
| 0503 (K) | | | 16°-58'N | 142°-13'E | 060° | 2 | " | " | |
| 3 June | (-K) | (-K) | | | | | | | Surface CC |
| 0034 | 0548K | 1904K | 17°-12'N | 142°-40.5'E | 085° | 8 | " | " | |
| 0548 | 1904 | 3 June | Dive |
| 0503 (K) | | | 17°-17'N | 143°-57'E | 035° | 2 | " | " | |

— page 160 —
ANNEX (A)
| Date & Time | Sunrise (-K) | Sunset (-K) | Position Latitude | Position Longitude | Made Good Course | Made Good Speed | Scouting Line Bearing | Scouting Distance | Remarks |
|---|
| 28 May | (-K) | (-K) | 23°-29'N | 147°-21'E | 231°T | 12.5Kts. | 060°T | 30,000 yds. | Enter area Each ship |
| 0524 | 0524 | 1858 | | | | | | | CC to 240°T so as to |
| 1858 | | | | | | | | | on passing into area | to adjust SL |
| 28 May | 0524 (-K) | | | 21°-44'N | 144°-55'E | " | " | 240°T | " | " |
| 1858 (-K) | 29 May | (-K) | | | | | | | | | Dive, keep periodic |
| 0034 | 0548 | | 21°-00'N | 144°-00'E | 240°T | 12.5Kts. | " | " | listen. |
| 0548 (-K) | 29 May | Surface. |
| 0149 | | | 20°-42'N | 143°-21.5'E | 245°T | 8.0Kts. | " | " | |
| 0457 (-K) | 29 May | " |
| 0503 | | | 20°-29.5'N | 142°-52'E | " | 2.0Kts. | " | " | |
| 30 May | (-K) | (-K) | | | | | | | Dive CS |
| 0034 | 0548 | | 19°-58'N | 141°-41'E | 217° | 8.0Kts. | 060°T | 30,000 Yds. | |
| 0548 (-K) | 30 May | Dive CC |
| 0503 (K) | | | 19°-34.5'N | 141°-21.5'E | 217° | 2 | 240°T | " | |
| 31 May | (-K) | (-K) | | | | | | | Surface CS |
| 0034 | 0548K | 1903K | 18°-35.5'N | 140°-33'E | 184° | 8 | " | " | |
| 0548 | 1903 | 31 May | Surface CC |
| 0503 (K) | | | 18°-06.5'N | 140°-30.5'E | " | 2 | " | " | |
| 1 June | (-K) | (-K) | | | | | | | Rendezvous CS |
| 0034 | 0548K | 1903K | 17°-09.5'N | 140°-26'E | 184° | 8 | " | " | |
| 0548 | 1903 | 1 June | Dive CC |
| 0503 (K) | | | 16°-52'N | 140°-25'E | 086° | 2 | " | " | |
| 2 June | (-K) | (-K) | | | | | | | Surface SS |
| 0034 | 0548K | 1904K | 16°-53'N | 140°-56'E | 086° | 8 | " | " | |
| 0548 | 1904 | 2 June | Dive CS |
| 0503 (K) | | | 16°-58'N | 142°-13'E | 060° | 2 | " | " | |
| 3 June | (-K) | (-K) | | | | | | | Surface CC |
| 0034 | 0548K | 1904K | 17°-12'N | 142°-40.5'E | 085° | 8 | " | " | |
| 0548 | 1904 | 3 June | Dive |
| 0503 (K) | | | 17°-17'N | 143°-57'E | 035° | 2 | " | " | |

— page 161 —
-3 4-

ANNEX (A)
| Date & Time | Sunrise | Sunset | Position Latitude | Position Longitude | Mad Good Course | Mad Good Speed | Scouting Miles Run | Scouting Line Bearing | Scouting Distance | Remarks |
|---|
| 4 June | 0503 (K) | 1950 (K) | 17°-41'N | 144°-15'E | 338° | 8 | 74.0 | 060°T | 30,000 Yds. | Surface SS |
| | | | 18°-42'N | 145°-00'E | 338° | 8 | 29.5 | 240°T | " | CC CS |
| | | | 19°-09.5'N | 144°-49'E | 338° | 8 | 74.0 | 060°T | 30,000 Yds. | Dive CC CS |
| | | | 20°-18.5'N | 144°-19.5'E | 292° | 8 | 29.5 | 240°T | " | Surface CC CS |
| 5 June | 0503 (K) | 1950 (K) | 20°-30'N | 143°-31'E | 292° | 8 | 74.0 | 060°T | 30,000 Yds. | Dive CC CS |
| | | | 20°-38'N | 142°-37'E | 252° | 8 | 29.5 | 240°T | " | Surface CC CS |
| | | | 20°-49'N | 142°-07'E | 252° | 8 | 74.0 | 060°T | 30,000 Yds. | Dive CC CS |
| | | | 20°-25'N | 140°-52'E | 201° | 8 | 29.5 | 240°T | " | Surface CC CS |
| 7 June | 0548K | 1906K | 19°-57'N | 140°-41'E | 201° | 8 | 74.0 | 060°T | 30,000 Yds. | Dive CC CS |
| | | | 18°-48'N | 140°-12'E | 201° | 8 | 29.5 | 240°T | " | Surface CC CS |
| 8 June | 0503 (K) | 1951 (K) | 18°-20'N | 140°-00'E | 300° | 8 | 74.0 | 060°T | 30,000 Yds. | Dive CC CS |
| | | | 19°-00'N | 138°-48'E | 270° | 12 | 71.6 | 060°T | 30,000 Yds. | Increase speed. |
| 9 June | 0448 (K) | 1937K | 19°-00'N | 135°-42'E | 270° | 8 | 75.8 | 240°T | " | Rendezvous CS |

AUXILIARY POSITIONS
To be used after date of
same number and when designated.

| Latitude | Longitude |
|---|---|
| 21°-39.5'N | 141°-52'E |
| 18°-23'N | 142°-22'E |
| 17°-38'N | 142°-04'E |
| 16°-25'N | 141°-15'E |
| 18°-36'N | 142°-47'E |
| 18°-51'N | 142°-14'E |
| 19°-15'

— page 161 —
-3 4-

ANNEX (A)
| Date & Time | Sunrise | Sunset | Position Latitude | Position Longitude | Mad Good Course | Mad Good Speed | Scouting Miles Run | Scouting Line Bearing | Scouting Distance | Remarks |
|---|
| 4 June | 0503 (K) | 1950 (K) | 17°-41'N | 144°-15'E | 338° | 8 | 74.0 | 060°T | 30,000 Yds. | Surface SS |
| | | | 18°-42'N | 145°-00'E | 338° | 8 | 29.5 | 240°T | " | CC CS |
| | | | 19°-09.5'N | 144°-49'E | 338° | 8 | 74.0 | 060°T | 30,000 Yds. | Dive CC CS |
| | | | 20°-18.5'N | 144°-19.5'E | 292° | 8 | 29.5 | 240°T | " | Surface CC CS |
| 5 June | 0503 (K) | 1950 (K) | 20°-30'N | 143°-31'E | 292° | 8 | 74.0 | 060°T | 30,000 Yds. | Dive CC CS |
| | | | 20°-38'N | 142°-37'E | 252° | 8 | 29.5 | 240°T | " | Surface CC CS |
| | | | 20°-49'N | 142°-07'E | 252° | 8 | 74.0 | 060°T | 30,000 Yds. | Dive CC CS |
| | | | 20°-25'N | 140°-52'E | 201° | 8 | 29.5 | 240°T | " | Surface CC CS |
| 7 June | 0548K | 1906K | 19°-57'N | 140°-41'E | 201° | 8 | 74.0 | 060°T | 30,000 Yds. | Dive CC CS |
| | | | 18°-48'N | 140°-12'E | 201° | 8 | 29.5 | 240°T | " | Surface CC CS |
| 8 June | 0503 (K) | 1951 (K) | 18°-20'N | 140°-00'E | 300° | 8 | 74.0 | 060°T | 30,000 Yds. | Dive CC CS |
| | | | 19°-00'N | 138°-48'E | 270° | 12 | 71.6 | 060°T | 30,000 Yds. | Increase speed. |
| 9 June | 0448 (K) | 1937K | 19°-00'N | 135°-42'E | 270° | 8 | 75.8 | 240°T | " | Rendezvous CS |

AUXILIARY POSITIONS
To be used after date of
same number and when designated.

| Latitude | Longitude |
|---|---|
| 21°-39.5'N | 141°-52'E |
| 18°-23'N | 142°-22'E |
| 17°-38'N | 142°-04'E |
| 16°-25'N | 141°-15'E |
| 18°-36'N | 142°-47'E |
| 18°-51'N | 142°-14'E |
| 19°-15'

— page 163 —
-36-

ANNEX (A)
| Date & Time | Sunrise | Sunset | Position Latitude | Position Longitude | Made Good Course | Made Good Speed | Scouting Miles | Scouting Line Bearing | Scouting Distance | Remarks |
|---|
| 18 June | 0521I | 1928 (I) | 21°-37'N | 120°-04'E | 273°T | 2 | 29.7 | 055° | 30,000 | Dive CC - CS |
| 0436 (I) | | | | | | | | 235° | | |
| 18 June | | | 21°-37.5'N | 119°-32.2'E | 245°T | 8 | " | " | " | Surface CC - CS |
| 1928 (I) | 19 June | 0519I | " | 21°-08'N | 118°-21'E | 235°T | 2 | 72.8 | " | " | Dive CC - CS |
| 0434 (I) | 19 June | | | 20°-51'N | 117°-54'E | 235°T | 8 | 30.0 | " | " | Surface CC - CS |
| 1933 (I) | 20 June | 0529I | " | 20°-31'N | 117°-22'E | 115°T | 2 | 36.8 | " | " | CC |
| 0009 (I) | 20 June | | | 20°-15'N | 117°-58'E | 090°T | 8 | 36.8 | " | " | Dive CC - CS |
| 0444 (I) | 20 June | | | 20°-15'N | 118°-30'E | 070°T | 2 | 29.7 | " | " | Surface CC - CS |
| 1938 (I) | 21 June | 0525I | " | 20°-40'N | 119°-44'E | 090°T | 2 | 72.8 | 000° | " | Dive CC - CS |
| 0440 (I) | 21 June | | | 20°-39.5'N | 120°-16'E | 108°T | 8 | 29.4 | 180° | " | Surface CC - CS |
| 1922 (I) | 22 June | 0517I | " | 20°-15'N | 121°-30'E | 355°T | 2 | 73.0 | 060° | " | Change Scouting Line |
| 0432 (I) | Bearing during night. |
| 22 June | | | 20°-45'N | 121°-27'E | 270°T | 8 | 30.0 | 240° | " | Dive CC - CS |
| 1930 (I) | Surface CC - CS |
| 23 June | 0520I | " | 20°-46'N | 120°-09.5'E | 222°T | 2 | 72 | " | " | Change Scouting Line |
| 0425 (I) | Bearing during night. |
| 23 June | | | 20°-24'N | 119°-48'E | 080°T | 8 | 30 | " | " | Dive CC - CS |
| 1927 (I) | Surface CC - CS |
| 24 June | 0522I | " | 20°-34'N | 121°-06.5'E | 023°T | 2 | 32 | 090° | 30,000 Yds. | Dive CC - CS |
| 0425 (I) | 24 June | | | 21°-03.5'N | 121°-20'E | 058°T | 14 | " | 270° | " | Surface CS |
| 2000 (I) | 24 June | | | 21°-19'N | 121°-47.5'E | 083°T | 14 | " | 280° | " | Pass through Bashii Channel. |
| 2210 (I) | CC GSIB |

— page 164 —
-37-

ANNEX (A)
| Date & Time | Position Latitude | Position Longitude | Course | Speed | Made Good |
|---|---|---|---|---|---|
| 25 June 0415 (I) | 21°-28'N | 123°-18.5'E | 083°T | 2 | 12.5 |
| 25 June 1920 (I) | 21°-32'N | 125°-50.5'E | 083°T | 2 | 12.5 |
| 26 June 0415 (I) | 21°-45'N | 126°-25'E | 090°T | 2 | 12.5 |
| 27 June 0370 (I) | 21°-49'N | 128°-00'E | 090°T | 2 | 12.5 |
| 27 June 0506 (J) | 22°-00'N | 131°-50'E | 090°T | 2 | 12.5 |
| 28 June 2000 (J) | 22°-00'N | 137°-15'E | 090°T | 2 | 12.5 |
| 29 June (Noon J) | 22°-00'N | 142°-35'E | 090°T | 2 | 12.5 |
| 30 June (Noon J) | 22°-00'N | 147°-52'E | 090°T | 2 | 12.5 |
| 1 July (Noon J) | 22°-00'N | 153°-12'E | 090°T | 2 | 12.5 |

| Date & Time | Event | Position | Made Good Miles | Scouting Line Bearing | Scouting Distance<br>40,000 Yds. Dive CS | Remarks<br>Surface CS |
|---|---|---|---|---|---|---|
| 25 June<br>0415 (I) | | 21°-28'N 123°-18.5'E | 65.4 | 100° | " | Surface CS |
| 1920 (I) | | 21°-32'N 125°-50.5'E | 30.2 | 280° | " | " |
| 26 June<br>0415 (I) | | 21°-45'N 126°-25'E | 112.5 | 105°<br>285° | "<br>" | Surface CS<br>CC to 270<br>to J zone. |
| 27 June<br>0370 (I) | | 21°-49'N 128°-00'E | 89.0 | " | " | Surface CS |
| 0506 (J) | | 22°-00'N 131°-50'E | 9.4 | " | " | Dive |
| 2000 (J) | | 22°-00'N 137°-15'E | 29.2 | " | " | Surface CS |
| 28 June (Noon J) | | 22°-00'N 137°-15'E | 200.0 | " | " | 0370 leave area, re<br>material condition |
| 29 June (Noon J) | | 22°-00'N 142°-35'E | 300.0 | " | " | 0000 Change S L Bearing |
| 30 June (Noon J) | | 22°-00'N 147°-52'E | 300.0 | " | " | 0500 Change zone to K |
| 1 July (Noon J) | | 22°-00'N 153°-12'E | 287.0 | " | " | 0000 Change S L Bearing<br>0000 change zone to K |

— page 164 —
-37-

ANNEX (A)
| Date & Time | Position | Made Good | Scouting | Remarks |
|---|
| | Latitude | Longitude | Course | Speed | Miles | Line | Bearing | Distance | |
| 25 June 0415 (I) | 21°-28'N | 123°-18.5'E | 083°T | 2 | 12.5 | | 100° | 40,000 Yds. | Surface CS |
| 1507I 1834I | 21°-32'N | 123°-31'E | 083°T | 2 | 12.5 | | 280° | " | Dive CS |
| 1920 (I) | 21°-45'N | 125°-50.5'E | 083°T | 2 | 12.5 | | 105° | " | Surface CS |
| 26 June 0415 (I) | 21°-49'N | 126°-25'E | 090°T | 2 | 12.5 | | 285° | " | CC to 270\nto J zone. |
| 0503I 1828I | 22°-00'N | 128°-00'E | 090°T | 2 | 12.5 | | " | " | Dive |
| 2031 (I) | 22°-00'N | 131°-50'E | 090°T | 2 | 12.5 | | " | " | Surface CS\n0370 leave area, re-\nmaterial condition |
| 27 June 0370 (I) | 22°-00'N | 137°-15'E | 090°T | 2 | 12.5 | | " | " | 0000 Change S L Bearing\n0500 Change zone to K |
| 0454I 1913J | 22°-00'N | 142°-35'E | 090°T | 2 | 12.5 | | " | " | " |
| 0506 (J) | 22°-00'N | 147°-52'E | 090°T | 2 | 12.5 | | " | " | " |
| 2000 (J) | | | | | | | | | " |
| 28 June (Noon J) | | | | | | | | | " |
| 29 June (Noon J) | | | | | | | | | " |
| 30 June (Noon J) | | | | | | | | | " |
| 1 July | | | | | | | | | " |

— page 165 —
CHANGES TO ANNEX (A)

Date & | Latitude | Longitude | Course | Speed | Miles | Scouting | Scouting | Remarks
Hour | | | Made | Made | Run | Line | Distance |
| | | Good | Good | | Bearing | |

9 June | 18°-44'N | 138°-00'E | 279.5° | 2 | 5.5 | | | Enemy submarines are in this area.
0500 K | | | | | | | | Dive - Take periscope observations
| | | | | | | | periodically at 55 ft. Expose SD
| | | | | | | | Mast to receive a cruise on auxiliary
| | | | | | | | engine 16-20 - change time from K to J.
2025 K | | | | | 31 | 060° | 50,000 Yds. |
| | | | | | 240° | " |
10 June | 18°-57'N | 136°-36'E | 279.5° | 2 | 5.5 | " | " | Dive - CS to 2.0
0115 J | | | | | | | |
1930 J | | | | | 49 | " | " | Surface - CS to 5.5
11 June | 19°-11'N | 135°-09'E | 279.5° | 2 | 5.5 | " | " | Dive - CS to 2.0
0415 J | | | | | | | |
1930 J | | | | | 53.3 | " | " | Surface - CS to 5.5
12 June | 19°24.5'N | 133°-40.5'E | 279.5° | 2 | 5.5 | " | " | Dive - CS to 2.0
0415 J | | | | | | | |
1945 J | | | | | 31.0 | " | " | Surface - CS to 5.5
13 June | 19°37.5'N | 132°-17.5'E | 279.5° | 2 | 5.5 | " | " | Dive - CS to 2.0
0430 J | | | | | | | |
1700 J | | | | 13.0 | 48.0 | " | " | Surface - CS to 13.0
2000 J | | | | 5.5 | 25.0 | " | " | Surface - CS to 5.5
13 June | 19°-57'N | 130°-20'E | 279.5° | 13.0 | 39.0 | " | " | Rendezvous for instructions.
0430 J | | | | | | | |

— page 165 —
CHANGES TO ANNEX (A)

Date & | Latitude | Longitude | Course | Speed | Miles | Scouting | Scouting | Remarks
Hour | | | Made | Made | Run | Line | Distance |
| | | Good | Good | | Bearing | |

9 June | 18°-44'N | 138°-00'E | 279.5° | 2 | 5.5 | | | Enemy submarines are in this area.
0500 K | | | | | | | | Dive - Take periscope observations
| | | | | | | | periodically at 55 ft. Expose SD
| | | | | | | | Mast to receive a cruise on auxiliary
| | | | | | | | engine 16-20 - change time from K to J.
2025 K | | | | | 31 | 060° | 50,000 Yds. |
| | | | | | 240° | " |
10 June | 18°-57'N | 136°-36'E | 279.5° | 2 | 5.5 | " | " | Dive - CS to 2.0
0115 J | | | | | | | |
1930 J | | | | | 49 | " | " | Surface - CS to 5.5
11 June | 19°-11'N | 135°-09'E | 279.5° | 2 | 5.5 | " | " | Dive - CS to 2.0
0415 J | | | | | | | |
1930 J | | | | | 53.3 | " | " | Surface - CS to 5.5
12 June | 19°24.5'N | 133°-40.5'E | 279.5° | 2 | 5.5 | " | " | Dive - CS to 2.0
0415 J | | | | | | | |
1945 J | | | | | 31.0 | " | " | Surface - CS to 5.5
13 June | 19°37.5'N | 132°-17.5'E | 279.5° | 2 | 5.5 | " | " | Dive - CS to 2.0
0430 J | | | | | | | |
1700 J | | | | 13.0 | 48.0 | " | " | Surface - CS to 13.0
2000 J | | | | 5.5 | 25.0 | " | " | Surface - CS to 5.5
13 June | 19°-57'N | 130°-20'E | 279.5° | 13.0 | 39.0 | " | " | Rendezvous for instructions.
0430 J | | | | | | | |

— page 166 —
DAWN                                DAWN
20th        to        21st        PILOTFISH - Area 1
                                PINTADO   - Area 3
                                TUNNY     - Area 2 and depart unless otherwise
                                            directed by ComSubsPac

21st        to        22nd        PILOTFISH - Area 2
                                PINTADO   - Area 3

22nd        to        23rd        PILOTFISH - Area 3
                                PINTADO   - Area 4

23rd        to        24th        PILOTFISH - Area 3
                                PINTADO   - Area 4

24th        to        25th        PILOTFISH - Area 4
                                PINTADO   - Area 1

25th        to        26th        PILOTFISH - Area 4 and 1
                                PINTADO   - Area 2

26th        to        28th        DEPART

                                -3-

— page 166 —
DAWN                                DAWN
20th        to        21st        PILOTFISH - Area 1
                                PINTADO   - Area 3
                                TUNNY     - Area 2 and depart unless otherwise
                                            directed by ComSubsPac

21st        to        22nd        PILOTFISH - Area 2
                                PINTADO   - Area 3

22nd        to        23rd        PILOTFISH - Area 3
                                PINTADO   - Area 4

23rd        to        24th        PILOTFISH - Area 3
                                PINTADO   - Area 4

24th        to        25th        PILOTFISH - Area 4
                                PINTADO   - Area 1

25th        to        26th        PILOTFISH - Area 4 and 1
                                PINTADO   - Area 2

26th        to        28th        DEPART

                                -3-

— page 167 —
AREA 1
    Lat. 20°-30' to 22°-10'N
    Long. 118° to West Coast FORMOSA
    and 120°-50'E

AREA 2
    Lat. 22° to 23°N
    East Coast FORMOSA to 122°-30'E

AREA 3
    Lat. 20°-30' to 22°N
    Long. 120°-50' to 122°E

AREA 4
    Lat. 18°-30' to 20°-30'N
    Long. 118° to 122°E

[HANDWRITTEN: - 46]

— page 167 —
AREA 1
    Lat. 20°-30' to 22°-10'N
    Long. 118° to West Coast FORMOSA
    and 120°-50'E

AREA 2
    Lat. 22° to 23°N
    East Coast FORMOSA to 122°-30'E

AREA 3
    Lat. 20°-30' to 22°N
    Long. 120°-50' to 122°E

AREA 4
    Lat. 18°-30' to 20°-30'N
    Long. 118° to 122°E

[HANDWRITTEN: - 46]

— page 168 —
-41-

ANNEX (A) - (REVISED)
Date | Latitude | Longitude | Course | Speed | Miles | Scouting | Scouting | Remarks
& Time | | | | Made | Run | Line | Distance |
| | | | Good | | Bearing | |
11 June | 20-11 | 130-09 | 279.5 | 12 | 295 | 041-221 | 50000 Yds. | C/C 270°T
0415 (J) | | | | | | | | Change to (H)
12 June | 20 | 130 | 270 | 12 | 300 | 041-221 | 50000 Yds. | Divo
0400 (I) | | | | | | | | Surface
12 June | 20 | 124-39 | 270 | 12 | 30 | 041-221 | 50000 Yds. | Divo
1800 (I) | | | | | | | | Surface
13 June | 20 | 124-08 | 270 | 7.4 | 72.5 | 041-221 | 50000 Yds. | Divo
0400 (H) | | | | | | | | Surface
13 June | 20 | 122-51 | 270 | 2 | 29 | 041-221 | 50000 Yds. | Submarines pass through BALINTANG CHANNEL, PILOTFISH
1900 (H) | | | | | | | | | course to 239°T. PINTADO through same point at
| | | | | | | | | at 2315, 14 June and changes course to 210°T.
14 June | 20 | 122-20 | 270 | 14 | 29 | 041-221 | 50000 Yds. | passing through point Lat. 20, Long. 121-20 at 2115,
0445 (H) | | | | | | | | | 14 June and changes course to 227°T. TUNNY
15 June | 19-04 | 120-13 | 262 | 2 | 135 | 101-281 | 50000 Yds. | Divo
0430 (H) | | | | | | | | | Surface
15 June | 19-00 | 119-43 | 262 | 8 | 30 | 101-281 | 50000 Yds. | Divo
1930 (H) | | | | | | | | | Surface
16 June | 18-51 | 118-27 | 351 | 2 | 72 | 101-281 | 50000 Yds. | Divo
0430 (H) | | | | | | | | | Surface
16 June | 18-47 | 117-57 | 351 | 8 | 29 | 101-281 | 50000 Yds. | Divo
1915 (H) | | | | | | | | | Surface
17 June | 20-01 | 117-45 | 036 | 2 | 74 | 101-281 | 50000 Yds. | Divo
0430 (H) | | | | | | | | | Surface
17 June | 20-30 | 117-41 | 105 | 8 | 29 | " | " | "
1915 (H) | | | | | | | | | "
18 June | 21-29 | 118-28 | 021 | 2 | 72 | " | " | "
0430 (H) | | | | | | | | | "
18 June | 21-53 | 118-47 | 021 | 8 | " | " | " | "
1915 (H) | | | | | | | | | "
19 June | 21-33 | 120-02 | 021 | 2 | " | " | " | "
0430 (H) | | | | | | | | | "
19 June | 22 | 120-12.8 | 021 | 8 | " | " | " | "
1915 (H) | | | | | | | | | "

— page 169 —
C-O-N-F-I-D-E-N-T-I-A-L

Patrol Instructions for PINTADO, SHARK and PILOTFISH.

The following instructions are effective during the patrol for
this coordinated attack group.

1. Enroute to and from area submarines proceed in indicated
line of bearing. Order of ships, west to east, PILOTFISH, PINTADO
and SHARK.

2. Zigzag at all times.

3. Make trim dive daily before sunrise.

4. Training dives and individual training will be conducted
daily at the discretion of the commanding officer.

5. Exercise radar tracking parties for at least one hour daily
enroute to area. Adjoining submarine can be used as target.

6. Upon receipt of orders from Commander Submarine Force re-
quiring action by this group, C.T.G. will send out instructions.
If it becomes apparent to the senior commanding officer that the
C.T.G. has not received the despatch and that he can not be raised
by radio, action will be initiated by the next senior commanding
officer.

7. Rendezvous points are as ordered by C.T.G.

8. Scouting line will remain same unless it becomes necessary
to change it. C.T.G. will then give order to orient the scouting
line to a new bearing.

9. Never delay an attack to let other submarines get in
position. Attack at every opportunity.

10. Do not give up a hot pursuit unless so directed by C.T.G.

11. Do not attack any submarine unless its identity is
absolute. Evade if possible.

12. Dives other than at scheduled times should alert other
submarines.

13. Speed will be regulated by C.T.G.

14. Set torpedoes at 6 to 10 feet depending on the condition
of the sea, except for BB and CV, then set them at eighteen (18)
feet.

- 42 - ENCLOSURE "B"
ANNEX "B"

— page 169 —
C-O-N-F-I-D-E-N-T-I-A-L

Patrol Instructions for PINTADO, SHARK and PILOTFISH.

The following instructions are effective during the patrol for
this coordinated attack group.

1. Enroute to and from area submarines proceed in indicated
line of bearing. Order of ships, west to east, PILOTFISH, PINTADO
and SHARK.

2. Zigzag at all times.

3. Make trim dive daily before sunrise.

4. Training dives and individual training will be conducted
daily at the discretion of the commanding officer.

5. Exercise radar tracking parties for at least one hour daily
enroute to area. Adjoining submarine can be used as target.

6. Upon receipt of orders from Commander Submarine Force re-
quiring action by this group, C.T.G. will send out instructions.
If it becomes apparent to the senior commanding officer that the
C.T.G. has not received the despatch and that he can not be raised
by radio, action will be initiated by the next senior commanding
officer.

7. Rendezvous points are as ordered by C.T.G.

8. Scouting line will remain same unless it becomes necessary
to change it. C.T.G. will then give order to orient the scouting
line to a new bearing.

9. Never delay an attack to let other submarines get in
position. Attack at every opportunity.

10. Do not give up a hot pursuit unless so directed by C.T.G.

11. Do not attack any submarine unless its identity is
absolute. Evade if possible.

12. Dives other than at scheduled times should alert other
submarines.

13. Speed will be regulated by C.T.G.

14. Set torpedoes at 6 to 10 feet depending on the condition
of the sea, except for BB and CV, then set them at eighteen (18)
feet.

- 42 - ENCLOSURE "B"
ANNEX "B"

— page 170 —
C-O-N-F-I-D-E-N-T-I-A-L

15. Be sure and use large enough spreads to cover errors in
course and speed. However make all torpedoes hit if you have the
correct data.

16. Fire at least four (4) torpedoes at AKs and keep firing
at a BB or CV until it sinks.

17. Use plotting sheets for work sheet and area designation.

18. Add damage inflicted or sustained to any transmission.

19. Priority of ships is designated in appex to operation order.

20. Surface patrol speed will be two engines - 12 knots during
day, one engine - 10 knots during night.

21. Patrol and search planes will be discussed at MIDWAY.

22. In 14-B set clocks at minus 9 zone time. In 11-D set
clocks at minus eight zone time.

23. Use regular major war vessel recognition signal in effect.

24. At rendezvous submarines will have a periscope raised.

25. Do not hesitate to leave area to press home an attack.

26. After an attack inform rest of pack where convoy is head-
ing or ask for information. Keep at them till they are all sunk.

27. Slow down at night to five knots if it is too phorescent
and use sound gear.

28. Do not hesitate to ask for more information if fouled up.

29. I expect to enter area on the 29th May and again on the
14th June.

30. Attack at every opportunity.

31. After finishing the engagement run like hell for new
rendezvous. Send no message to SubsPac unless it is a task force.

32. On initial contact, if you are in a good approach position
go ahead and attack. Inform other submarines of your action.

33. During surface patrol raise periscope to search, then lower
periscope when it is not in use.

34. When submerged raise "SD" mast first five minutes of every
hour to listen on the 2000 band.

- 43 -
ENCLOSURE "B"
ANNEX "B"

— page 170 —
C-O-N-F-I-D-E-N-T-I-A-L

15. Be sure and use large enough spreads to cover errors in
course and speed. However make all torpedoes hit if you have the
correct data.

16. Fire at least four (4) torpedoes at AKs and keep firing
at a BB or CV until it sinks.

17. Use plotting sheets for work sheet and area designation.

18. Add damage inflicted or sustained to any transmission.

19. Priority of ships is designated in appex to operation order.

20. Surface patrol speed will be two engines - 12 knots during
day, one engine - 10 knots during night.

21. Patrol and search planes will be discussed at MIDWAY.

22. In 14-B set clocks at minus 9 zone time. In 11-D set
clocks at minus eight zone time.

23. Use regular major war vessel recognition signal in effect.

24. At rendezvous submarines will have a periscope raised.

25. Do not hesitate to leave area to press home an attack.

26. After an attack inform rest of pack where convoy is head-
ing or ask for information. Keep at them till they are all sunk.

27. Slow down at night to five knots if it is too phorescent
and use sound gear.

28. Do not hesitate to ask for more information if fouled up.

29. I expect to enter area on the 29th May and again on the
14th June.

30. Attack at every opportunity.

31. After finishing the engagement run like hell for new
rendezvous. Send no message to SubsPac unless it is a task force.

32. On initial contact, if you are in a good approach position
go ahead and attack. Inform other submarines of your action.

33. During surface patrol raise periscope to search, then lower
periscope when it is not in use.

34. When submerged raise "SD" mast first five minutes of every
hour to listen on the 2000 band.

- 43 -
ENCLOSURE "B"
ANNEX "B"

— page 171 —
C-O-N-F-I-D-E-N-T-I-A-L

35. When it is possible use SJ signal to indicate friendly
submarine.

36. During submergency take periodic observations at fifty-
five feet.

37. The simultaneous attack will be used whenever it is
possible as it provides greater possibilities of at least one
submarine getting in. See Annex "A".

- 44 -

ENCLOSURE "B"
ANNEX "B"

— page 171 —
C-O-N-F-I-D-E-N-T-I-A-L

35. When it is possible use SJ signal to indicate friendly
submarine.

36. During submergency take periodic observations at fifty-
five feet.

37. The simultaneous attack will be used whenever it is
possible as it provides greater possibilities of at least one
submarine getting in. See Annex "A".

- 44 -

ENCLOSURE "B"
ANNEX "B"

— page 172 —
C-O-N-F-I-D-E-N-T-I-A-L

COMMUNICATIONS

1. Keep communication down to a minimum. Follow communica-
   tion plan for this group.
2. If the Japs jam the circuit, shift to the next frequency
   on the schedule.
3. Just prior to transmitting, tune in your transmitting
   antenna circuit on the scheduled frequency. Radio comm-
   unications have been unsatisfactory because operators are careless in tuning.
4. Receipt for every message.
5. When submerged raise "SD" mast first five minutes of every
   hour to listen in on 2000 Kcs band.
6. Use "SJ" for identification to indicate friendly submarine
   whenever it is possible.
7. Add damage inflicted or sustained to any transmission.
8. Exercise Radar tracking parties for at least one hour daily
   enroute to sea.
9. Set clock to minus nine zone time in fourteen baker and
   minus eight zone time in eleven dog.
10. Use regular major war vessel recognition signal in effect.
11. Do not hesitate to ask for more information if you are
    fouled up.
12. Check Voy-call with PEARL at 50, 75, 100 miles to deter-
    mine minimum power required for communications.
13. Enroute MIDWAY test VHF reception at various distances
    and hours.
14. In contact report, always send enemy's position. Use the
    grid instructions as contained in ANNEX "A".
15. Only code will be used. Priority of communication channels
    are as follows: Visual, VHF, 2000 Kcs band, and 400 Kcs band.
16. Broadcast all messages twice.
17. Use "Rotating Intra-Pack Working Frequencies" as shown in
    ANNEX "C".

- 45 - INCLOSURE "C"

— page 172 —
C-O-N-F-I-D-E-N-T-I-A-L

COMMUNICATIONS

1. Keep communication down to a minimum. Follow communica-
tion plan for this group.

2. If the Japs jam the circuit, shift to the next frequency
on the schedule.

3. Just prior to transmitting, tune in your transmitting
antenna circuit on the scheduled frequency. Radio communications
have been unsatisfactory because operators are careless in tuning.

4. Receipt for every message.

5. When submerged raise "SD" mast first five minutes of every
hour to listen in on 2000 Kcs band.

6. Use "SJ" for identification to indicate friendly submarine
whenever it is possible.

7. Add damage inflicted or sustained to any transmission.

8. Exercise Radar tracking parties for at least one hour daily
enroute to area.

9. Set clock to minus nine zone time in fourteen baker and
minus eight zone time in eleven dog.

10. Use regular major war vessel recognition signal in effect.

11. Do not hesitate to ask for more information if you are
fouled up.

12. Check Voy-call with PEARL at 50, 75, 100 miles to deter-
mine minimum power required for communications.

13. Enroute MIDWAY test VHF reception at various distances
and hours.

14. In contact report, always send enemy's position. Use the
grid instructions as contained in ANNEX "A".

15. Only code will be used. Priority of communication channels
are as follows: Visual, VHF, 2000 Kcs band, and 400 Kcs band.

16. Broadcast all messages twice.

17. Use "Rotating Intra-Pack Working Frequencies" as shown in
ANNEX "C".

- 45 - INCLOSURE "C"

— page 173 —
C-O-N-F-I-D-E-N-T-I-A-L

18. Do not communicate by radio except to send a contact report
    or as ordered by C.T.G.

19. Do not receipt for any message unless it has the proper
    indicator prefix.

20. Brevity, clearness and necessity for broadcasting are
    the first consideration in any despatch.

21. Listen to China Broadcast when in area eleven dog.

22. To signal with "SJ" use "Valve Guide" to send pulses.
    Series of one pulse - close for message.
    Series of two pulses - recognition, friendly.
    Answer accordingly.

23. Procedure for "Intra-Pack" Communications.
    "Alert and check signals" (ANNEX "D").

    Each submarine will have "alert and check signals".
    Prior to sending any message the "alert and check" signal will be
    broadcast twice by the originator of the message. This will alert
    the pack. The other submarines will check in on the air by broad-
    casting their own "alert and check" signals twice.
        The originator then broadcasts the message twice
    prefixed by his indicator for that serial. The other submarine re-
    ceipts for the message by broadcasting twice their indicators for
    the same serial.
        Should one submarine be submerged, the broadcasting
    ship continues to send the same alert signal at 8M, 23M, 53M, 4
    and 6 hours.

24. Serial number and indicators. (ANNEX "E").

    Each pack message or despatch broadcasted intra-pack will
    be serial numbered.
        Each submarine will have its own indicator group for
    each serial number. This indicator group used by the originator
    will indicate who the originator is and be used as an authenticator.
    The indicator group used by the receiving ship will indicate who
    has received the despatch and act as a receipt. The indicator group
    will be the first group of the despatch.
        Should a submarine receive an alert signal after sur-
    facing the submarine will use the indicator followed by
    the number of the last despatch on board. Anyone of the other
    submarines on the surface will broadcast the messages which require
    her action. If the last message is not an action message the
    broadcasting vessel sends her indicator for the last serial number
    despatch broadcasted plus a dummy group.

- 46 -
ENCLOSURE "C"

— page 173 —
C-O-N-F-I-D-E-N-T-I-A-L

18. Do not communicate by radio except to send a contact report
    or as ordered by C.T.G.

19. Do not receipt for any message unless it has the proper
    indicator prefix.

20. Brevity, clearness and necessity for broadcasting are
    the first consideration in any despatch.

21. Listen to China Broadcast when in area eleven dog.

22. To signal with "SJ" use "Valve Guide" to send pulses.
    Series of one pulse - close for message.
    Series of two pulses - recognition, friendly.
    Answer accordingly.

23. Procedure for "Intra-Pack" Communications.
    "Alert and check signals" (ANNEX "D").

    Each submarine will have "alert and check signals".
    Prior to sending any message the "alert and check" signal will be
    broadcast twice by the originator of the message. This will alert
    the pack. The other submarines will check in on the air by broad-
    casting their own "alert and check" signals twice.
        The originator then broadcasts the message twice
    prefixed by his indicator for that serial. The other submarine re-
    ceipts for the message by broadcasting twice their indicators for
    the same serial.
        Should one submarine be submerged, the broadcasting
    ship continues to send the same alert signal at 8M, 23M, 53M, 4
    and 6 hours.

24. Serial number and indicators. (ANNEX "E").

    Each pack message or despatch broadcasted intra-pack will
    be serial numbered.
        Each submarine will have its own indicator group for
    each serial number. This indicator group used by the originator
    will indicate who the originator is and be used as an authenticator.
    The indicator group used by the receiving ship will indicate who
    has received the despatch and act as a receipt. The indicator group
    will be the first group of the despatch.
        Should a submarine receive an alert signal after sur-
    facing the submarine will use the indicator followed by
    the number of the last despatch on board. Anyone of the other
    submarines on the surface will broadcast the messages which require
    her action. If the last message is not an action message the
    broadcasting vessel sends her indicator for the last serial number
    despatch broadcasted plus a dummy group.

- 46 -
ENCLOSURE "C"

— page 174 —
C-O-N-F-I-D-E-N-T-I-A-L

25. "Encode and Decode" (ANNEX "F").

The encode and decode for the body of the despatch is
the same as the code that was made up by the BUSHNELL.

26. "Grid" (ANNEX "A").

The large and small grid are the same. The large
grid made up of one degree square covers a total of twelve degrees
of latitude and longitude. The circle on the large grid is placed
on the ten degree latitude and longitude lines cross.
Each square is numbered. Total number of squares is one hundred
and forty-four.
The small grid covers one degree square of latitude
and longitude. Each square in the small grid is five minutes of
latitude or longitude. The circle on the small grid is always in
the same direction as on the big grid.
The five vertical and horizontal squares at the
corner containing the circle may be used in a square of the small
grid to indicate any one minute of latitude or longitude. This letter
group will be used only to send our position.
By means of transferring from the plotting sheet to
grid the geographical position can be transmitted by two two lettered
code groups.
Prior to using the grid the latitude and longitude
lines should be properly marked accordingly by the navigator.

27. "Despatch Blanks" (ANNEX "B").

Despatch blanks are given each ship. The arrange-
ment of sending information will be followed as designated on the
despatch blank. Any group may be left out except in the case of
"course" for which a dummy group will have to be substituted in
case "speed" is used.
No words such as time, position, course, speed and
etc. need be encoded or used in the despatch.
If a submarine desires to send her own position,
course and speed, she will add the code group for the word "my"
after the code group for "time" and ahead of the code group for
"position".

- 47 - ENCLOSURE "C"

— page 174 —
C-O-N-F-I-D-E-N-T-I-A-L

25. "Encode and Decode" (ANNEX "F").

The encode and decode for the body of the despatch is
the same as the code that was made up by the BUSHNELL.

26. "Grid" (ANNEX "A").

The large and small grid are the same. The large
grid made up of one degree square covers a total of twelve degrees
of latitude and longitude. The circle on the large grid is placed
on the ten degree latitude and longitude lines cross.
Each square is numbered. Total number of squares is one hundred
and forty-four.
The small grid covers one degree square of latitude
and longitude. Each square in the small grid is five minutes of
latitude or longitude. The circle on the small grid is always in
the same direction as on the big grid.
The five vertical and horizontal squares at the
corner containing the circle may be used in a square of the small
grid to indicate any one minute of latitude or longitude. This letter
group will be used only to send our position.
By means of transferring from the plotting sheet to
grid the geographical position can be transmitted by two two lettered
code groups.
Prior to using the grid the latitude and longitude
lines should be properly marked accordingly by the navigator.

27. "Despatch Blanks" (ANNEX "B").

Despatch blanks are given each ship. The arrange-
ment of sending information will be followed as designated on the
despatch blank. Any group may be left out except in the case of
"course" for which a dummy group will have to be substituted in
case "speed" is used.
No words such as time, position, course, speed and
etc. need be encoded or used in the despatch.
If a submarine desires to send her own position,
course and speed, she will add the code group for the word "my"
after the code group for "time" and ahead of the code group for
"position".

- 47 - ENCLOSURE "C"

— page 175 —
C-O-N-F-I-D-E-N-T-I-A-L

ANNEX "A" - - - - - Grid.

ANNEX "B" - - - - - Despatch Blank.

ANNEX "C" - - - - - Rotating Intra-Pack Working
                      Frequencies.

ANNEX "D" - - - - - Alert and check signals.

ANNEX "E" - - - - - Serial numbers and indicators
                      for despatch.

ANNEX "F" - - - - - Two lettered code made up by
                      U.S.S. BUSHNELL.

- 48 - ENCLOSURE "C"

— page 175 —
C-O-N-F-I-D-E-N-T-I-A-L

ANNEX "A" - - - - - Grid.

ANNEX "B" - - - - - Despatch Blank.

ANNEX "C" - - - - - Rotating Intra-Pack Working
                      Frequencies.

ANNEX "D" - - - - - Alert and check signals.

ANNEX "E" - - - - - Serial numbers and indicators
                      for despatch.

ANNEX "F" - - - - - Two lettered code made up by
                      U.S.S. BUSHNELL.

- 48 - ENCLOSURE "C"

— page 176 —
C-O-N-F-I-D-E-N-T-I-A-L

G R I D
DAYS
CORNER
NW
NE
SE
SW

1   5   9   13   17   21   25   29
2   6   10   14   18   22   26   30
3   7   11   15   19   23   27   31
4   8   12   16   20   24   28

NW
NE
SE
SW

1   5   9   13   17   21   25   29
2   6   10   14   18   22   26   30
3   7   11   15   19   23   27   31
4   8   12   16   20   24   28

NW
NE
SE
SW

1   5   9   13   17   21   25   29
2   6   10   14   18   22   26   30
3   7   11   15   19   23   27   31
4   8   12   16   20   24   28

- 49 -

ENCLOSURE "C"
ANNEX "A"

— page 176 —
C-O-N-F-I-D-E-N-T-I-A-L

G R I D
DAYS
CORNER
NW             1   5   9   13  17  21  25  29
NE             2   6   10  14  18  22  26  30
SE             3   7   11  15  19  23  27  31
SW             4   8   12  16  20  24  28

NW             1   5   9   13  17  21  25  29
NE             2   6   10  14  18  22  26  30
SE             3   7   11  15  19  23  27  31
SW             4   8   12  16  20  24  28

NW             1   5   9   13  17  21  25  29
NE             2   6   10  14  18  22  26  30
SE             3   7   11  15  19  23  27  31
SW             4   8   12  16  20  24  28

- 49 -

ENCLOSURE "C"
ANNEX "A"

— page 177 —
C-O-N-F-I-D-E-N-T-I-A-L

AD-143
AO-121
AQ-114
AZ-4

BH-86
BI-131
BN-62
BO-32
BP-54
BR-9
BU-99
BW-97
BZ-74

CD-31
CF-35
CI-6
CK-133
CN-69
CP-37
CQ-93
CT-119

DA-116
DJ-141
DV-101
DX-88
DY-117

EE-112
EF-140
EG-34
EP-82

FA-5
FL-109
FS-7
FU-51
FY-136
FZ-142

GK-81
GL-67
GQ-144 HA-85
HB-10
HL-80
HZ-107

IE-19
IG-72
IH-24
IR-2
IS-78
IT-113
IU-122
IZ-96

JA-98
JB-89
JE-83
JG-123
JK-115
JL-23
JO-63
JP-59

KF-20
KJ-105
KR-39
KT-68
KW-56

LK-47
LL-65
LM-128
LT-60
LY-14

MA-100
MM-28
MO-118
MP-52
MV-55

NO-76
NP-33
NT-95
NV-29 G R I D
OD-22
OI-27
OJ-61
OK-66
OP-21
OT-15

PC-137
PF-70
PJ-111
PT-25
PZ-41
PU-135

QJ-73
QL-18
QP-36

RC-3
RE-13
RG-120
RJ-108
RK-110
RM-124
RW-11
RX-38
RY-134
RZ-104

SC-75
SV-30
SX-130
SY-139

TB-46
TJ-138

UE-50
UH-64
VB-87
VC-91
VK-40
VL-49
VP-71 WF-90
WM-12
WQ-127
WS-58

XA-1
XF-4
XG-132
XI-44
XJ-103
XK-103
XL-2
XM-25
XR-92
XV-106
XZ-77

YB-42
YC-45
YD-26
YS-106
YT-94

ZA-7
ZD-129
ZK-53
ZO-84
ZR-8
ZS-79
ZW-48

- 50 - ENCLOSURE "C"
ANNEX "A"

— page 177 —
C-O-N-F-I-D-E-N-T-I-A-L

G R I D

AD-143           HA-85           OD-22           WF-90
AO-121           HB-10           OI-27           WM-12
AQ-114           HL-80           OJ-61           WQ-127
AZ-4             HZ-107          OK-66           WS-58
                                 OP-21
BH-86            IE-19           OT-15           XA-1
BI-131           IG-72                           XF-4
BN-62            IH-24           PC-137          XG-132
BO-32            IR-2            PF-70           XI-44
BP-54            IS-78           PJ-111          XJ-103
BR-9             IT-113          PT-25           XK-103
BU-99            IU-122          PZ-41           XL-92
BW-97            IZ-96           PU-135          XM-25
BZ-74                                            XR-92
                                                 XV-125
CD-31            JA-98           QJ-73           XZ-77
CF-35            JB-89           QL-18
CI-6             JE-83           QP-36           YB-42
CK-133           JG-123                          YC-45
CN-69            JK-115          RC-3            YD-26
CP-37            JL-23           RE-13           YS-106
CQ-93            JO-63           RG-120          YT-94
CT-119           JP-59           RJ-108
                                 RK-110          ZA-7
DA-116           KF-20           RM-124          ZD-129
DJ-141           KJ-105          RW-11           ZK-53
DV-101           KR-39           RX-38           ZO-84
DX-88            KT-68           RY-134          ZR-8
DY-117           KW-56           RZ-104          ZS-79
                                                 ZW-48
EE-112           LK-47           SC-75
EF-140           LL-65           SV-30
EG-34            LM-128          SX-130
EP-82            LT-60           SY-139
                 LY-14
FA-5                                             TB-46
FL-109           MA-100          TJ-138
FS-7             MM-28
FU-51            MO-118          UE-50
FY-136           MP-52           UH-64
FZ-142           MV-55           VB-87
                                 VC-91
GK-81            NO-76           VK-40
GL-67            NP-33           VL-49
GQ-144           NT-95           VP-71
                 NV-29

                                 - 50 -          ENCLOSURE "C"
                                                 ANNEX "A"

— page 178 —
C-O-N-F-I-D-E-N-T-I-A-L

G R I D

1-XM           49-VL           97-BW
2-IR           50-UE           98-JU
3-RC           51-FU           99-BU
4-AZ           52-MP           100-MA
5-FA           53-ZK           101-DV
6-CI           54-BP           102-KA
7-FS           55-MV           103-XK
8-ZR           56-XW           104-RZ
9-BR           57-BJ           105-KJ
10-HB          58-WS           106-YS
11-RW          59-JP           107-HZ
12-WM          60-LT           108-RJ
13-RE          61-OJ           109-FL
14-LY          62-BN           110-RK
15-TO          63-JO           111-PJ
16-XG          64-UH           112-EE
17-ZA          65-LL           113-IT
18-QL          66-OK           114-AQ
19-IE          67-GL           115-JK
20-KF          68-KT           116-DA
21-OP          69-CN           117-DY
22-OD          70-PF           118-MO
23-JL          71-VP           119-ST
24-IH          72-IG           120-RG
25-PT          73-QJ           121-AO
26-YR          74-BJ           122-TU
27-OI          75-SC           123-JG
28-LM          76-NO           124-RM
29-NV          77-XZ           125-XV
30-SV          78-IS           126-GY
31-CD          79-ZS           127-WQ
32-BO          80-HL           128-LM
33-NP          81-GK           129-ZD
34-EG          82-EP           130-SX
35-CF          83-JF           131-BI
36-QP          84-ZO           132-XJ
37-CP          85-HA           133-CK
38-RX          86-BH           134-RY
39-KR          87-VB           135-PU
40-VK          88-DX           136-FY
41-PZ          89-JB           137-PC
42-YB          90-WF           138-TJ
43-XF          91-VC           139-SY
44-XI          92-XR           140-EF
45-YC          93-CQ           141-DJ
46-TB          94-YT           142-FZ
47-LK          95-NT           143-AD
48-ZW          96-IZ           144-GQ

                                ENCLOSURE "C"
                                ANNEX "A"
- 51 -

— page 178 —
C-O-N-F-I-D-E-N-T-I-A-L

G R I D

1-XM           49-VL           97-BW
2-IR           50-UE           98-JU
3-RC           51-FU           99-BU
4-AZ           52-MP           100-MA
5-FA           53-ZK           101-DV
6-CI           54-BP           102-KA
7-FS           55-MV           103-XK
8-ZR           56-XW           104-RZ
9-BR           57-BJ           105-KJ
10-HB          58-WS           106-YS
11-RW          59-JP           107-HZ
12-WM          60-LT           108-RJ
13-RE          61-OJ           109-FL
14-LY          62-BN           110-RK
15-TO          63-JO           111-PJ
16-XG          64-UH           112-EE
17-ZA          65-LL           113-IT
18-QL          66-OK           114-AQ
19-IE          67-GL           115-JK
20-KF          68-KT           116-DA
21-OP          69-CN           117-DY
22-OD          70-PF           118-MO
23-JL          71-VP           119-ST
24-IH          72-IG           120-RG
25-PT          73-QJ           121-AO
26-YR          74-BJ           122-TU
27-OI          75-SC           123-JG
28-LM          76-NO           124-RM
29-NV          77-XZ           125-XV
30-SV          78-IS           126-GY
31-CD          79-ZS           127-WQ
32-BO          80-HL           128-LM
33-NP          81-GK           129-ZD
34-EG          82-EP           130-SX
35-CF          83-JF           131-BI
36-QP          84-ZO           132-XJ
37-CP          85-HA           133-CK
38-RX          86-BH           134-RY
39-KR          87-VB           135-PU
40-VK          88-DX           136-FY
41-PZ          89-JB           137-PC
42-YB          90-WF           138-TJ
43-XF          91-VC           139-SY
44-XI          92-XR           140-EF
45-YC          93-CQ           141-DJ
46-TB          94-YT           142-FZ
47-LK          95-NT           143-AD
48-ZW          96-IZ           144-GQ

                                ENCLOSURE "C"
                                ANNEX "A"
- 51 -

— page 179 —
C-O-N-F-I-D-E-N-T-I-A-L

MESSAGE (code).

Detach here whenever this despatch blank is used.
Alert and check signals.

Serial.
Indicator.
Time.
Position.
Course.
Speed.
Disposition.
Ships (type).

                                                                ENCLOSURE "C"
                                                                ANNEX "B"
                                - 52 -

— page 179 —
C-O-N-F-I-D-E-N-T-I-A-L

MESSAGE (code).

Detach here whenever this despatch blank is used.
Alert and check signals.

Serial.
Indicator.
Time.
Position.
Course.
Speed.
Disposition.
Ships (type).

                                                                ENCLOSURE "C"
                                                                ANNEX "B"
                                - 52 -

— page 180 —
C-O-N-F-I-D-E-N-T-I-A-L
COMMUNICATION PLAN FOR PACK.
ROTATING INTRA-PACK WORKING FREQUENCIES

Date Time are G.C.T.
0000-1200 V.H.F. 1200-2400 V.H.F.

May
16 430 - 2160 A 304 - 2102 C
17 265 - 2006 B 402 - 2204 D
18 304 - 2102 C 450 - 2160 A
19 402 - 2204 D 265 - 2006 B
20 450 - 2160 A 304 - 2102 C
21
22
23
24
25
26
27
28
29
30
31
June
31 450 - 2160 A 304 - 2102 C

While submarines are submerged the 2000 Kcs band
only will be used.

- 53 - ENCLOSURE "C"
ANNEX "C"

— page 180 —
C-O-N-F-I-D-E-N-T-I-A-L
COMMUNICATION PLAN FOR PACK.
ROTATING INTRA-PACK WORKING FREQUENCIES

Time are G.C.T.
Date | 0000-1200 | V.H.F. | 1200-2400 | V.H.F.
May
16 | 430 - 2160 | A | 304 - 2102 | C
17 | 265 - 2006 | B | 402 - 2204 | D
18 | 304 - 2102 | C | 450 - 2160 | A
19 | 402 - 2204 | D | 265 - 2006 | B
20 | 450 - 2160 | A | 304 - 2102 | C
21
22
23
24
25
26
27
28
29
30
31
June
31 | 450 - 2160 | A | 304 - 2102 | C
While submarines are submerged the 2000 Kcs band
only will be used.

ENCLOSURE "C"
ANNEX "C"
- 53 -

— page 181 —
C-O-N-F-I-D-E-N-T-I-A-L

ALERT AND CHECK SIGNALS.

PILOTFISH | PINTADO | SHARK | RELAY
||-------|------
AA        | AA      | EJ    | CS
AK        | AP      | EM    | DN
BK        | BK      | FT    | HN
CW        | CW      | FX    | JJ
DI        | DI      | GO    | JR
DZ        | DZ      | HW    | NK
GG        | GG      | KA    | OF
GU        | GU      | MU    | PX
HW        | HW      | MW    | RA
IV        | IV      | MX    | RI
JU        | JU      | OA    | RS
KE        | KE      | OG    | SA
KU        | KU      | OH    | VZ
PI        | PI      | SQ    | WI
QX        | QX      | VU    | YQ
RD        | RD      | XB    | ZU
TH        | TH      |       |
VO        | VO      |       |
WD        | WD      |       |
YM        | YM      |       |

Submarines may use any one of the above group signals which
have been designated for her for broadcasting, or answering. Don't
use the same group signal twice unless all the other signals in the
column have been used. Don't use the same group signal as an
answer to a broadcast signal until after several repeats.

At 0 minute ship A sends out alert, ship B answers with ship C
is not heard. At 3 minutes ship A broadcasts message. At 8, 23,
and 53 minutes, 4 and 6 hours ship A sends out same alert signal.

If ship B has heard ship C, ship B answers with her alert and
relay and then ship B broadcasts the message after waiting 3 minutes.
Should ship A also hear ship C at the same time that ship B hears
ship C; ship A will broadcast the message.

Ship B should not answer the same alert the second time unless
ship C is heard by ship B and ship B knows that ship A cannot hear
ship C. Ship B then answers with the same alert as before plus
the relay.

ENCLOSURE "C"
ANNEX "D"

- 54 -

— page 181 —
C-O-N-F-I-D-E-N-T-I-A-L

ALERT AND CHECK SIGNALS.

PILOTFISH | PINTADO | SHARK | RELAY
||-------|------
AA        | AA      | EJ    | CS
AK        | AP      | EM    | DN
BK        | BK      | FT    | HN
CW        | CW      | FX    | JJ
DI        | DI      | GO    | JR
DZ        | DZ      | HW    | NK
GG        | GG      | KA    | OF
GU        | GU      | MU    | PX
HW        | HW      | MW    | RA
IV        | IV      | MX    | RI
JU        | JU      | OA    | RS
KE        | KE      | OG    | SA
KU        | KU      | OH    | VZ
PI        | PI      | SQ    | WI
QX        | QX      | VU    | YQ
RD        | RD      | XB    | ZU
TH        | TH      |       |
VO        | VO      |       |
WD        | WD      |       |
YM        | YM      |       |

Submarines may use any one of the above group signals which
have been designated for her for broadcasting, or answering. Don't
use the same group signal twice unless all the other signals in the
column have been used. Don't use the same group signal as an
answer to a broadcast signal until after several repeats.

At 0 minute ship A sends out alert, ship B answers with ship C
is not heard. At 3 minutes ship A broadcasts message. At 8, 23,
and 53 minutes, 4 and 6 hours ship A sends out same alert signal.

If ship B has heard ship C, ship B answers with her alert and
relay and then ship B broadcasts the message after waiting 3 minutes.
Should ship A also hear ship C at the same time that ship B hears
ship C; ship A will broadcast the message.

Ship B should not answer the same alert the second time unless
ship C is heard by ship B and ship B knows that ship A cannot hear
ship C. Ship B then answers with the same alert as before plus
the relay.

ENCLOSURE "C"
ANNEX "D"

- 54 -

— page 182 —
C-O-N-F-I-D-E-N-T-I-A-L

SERIAL NUMBER - DESPATCHES AND INDICATORS

                                                                4
                                                                0
                                                                0
                                                                -to 400.
Despatch Ser. No| 1 | 2 | 3 | 4 | 5 | 6 | 7 | - - - - -to 400. |
|---|---|---|---|---|---|---||-------
                | A | D | M |   |   |   |   |                 | N
                |---|---|---|---|---|---|---||-------
I               | Y | Q | A |   |   |   |   |                 | P
N   PILOTFISH   |---|---|---|---|---|---|---||-------
D               | Y | Z | Z |   |   |   |   |                 | Q
I               |---|---|---|---|---|---|---||-------
C               | B | O | M |   |   |   |   |                 | A
A               |---|---|---|---|---|---|---||-------
T               | Z | X | P |   |   |   |   |                 | B
O   PINTADO     |---|---|---|---|---|---|---||-------
R               | C | A | O |   |   |   |   |                 | F
S               |---|---|---|---|---|---|---||-------
                | M | P | Z |   |   |   |   |                 | X
                |---|---|---|---|---|---|---||-------
                | A | F | P |   |   |   |   |                 | D
    SHARK       |---|---|---|---|---|---|---||-------
                | C | H | O |   |   |   |   |                 | C
|---|---|---|---|---|---|---||-------

Each despatch has a serial number and
indicator for each submarine. Indicator acts
as authenticator for broadcasting ship and as
a receipt (IF NECESSARY) for receiving ship.

                                                ENCLOSURE "C"
                                                ANNEX "E"

                                - 55 -

— page 182 —
C-O-N-F-I-D-E-N-T-I-A-L
SERIAL NUMBER - DESPATCHES AND INDICATORS

                                                                                             4
                                                                                             0
                                                                                             0
                                                                                           -to 400.

             Despatch Ser. No 1 | 2 | 3 | 4 | 5 | 6 | 7 | - | - | - | - | - | - | - to 400. |
INDICATORS
PILOTFISH    A                  | D | M | N
             Y                  | Q | A | P
             Y                  | Z | Z | Q
PINTADO    B                  | O | M | A
           Z                  | X | P | B
           C                  | A | O | F
SHARK      M                  | P | Z | X
           A                  | F | P | D
           C                  | H | O | C

Each despatch has a serial number and
indicator for each submarine. Indicator acts
as authenticator for broadcasting ship and as
a receipt (IF NECESSARY) for receiving ship.

                                                                         ENCLOSURE "C"
                                                                         ANNEX "E"

                                                               - 55 -

— page 183 —
C-O-N-F-I-D-E-N-T-I-A-L

Two - lettered encode and decode as made up by U.S.S. BUSHNELL.

                                                                ENCLOSURE "C"
                                                                ANNEX "F"
- 56 -

— page 183 —
C-O-N-F-I-D-E-N-T-I-A-L

Two - lettered encode and decode as made up by U.S.S. BUSHNELL.

                                                                ENCLOSURE "C"
                                                                ANNEX "F"
- 56 -

— page 184 —
FF12-10/A16-3(15)/(16)
Serial 01551
CONFIDENTIAL

FIRST ENDORSEMENT to
Patrol Report of
SIXTH Coordinated Attack Group.

Subject: War Patrol of Coordinated Attack Group 17.12.
(16 May to 1 July 1944).

— page 185 —
[HANDWRITTEN: F4253]
FF12-10/A16-3(15)/(16) SUBMARINE FORCE, PACIFIC FLEET mr
Care of Fleet Post Office,
San Francisco, California,
29 July 1944

Serial 01551
[HANDWRITTEN: 6]
CONFIDENTIAL
FIRST ENDORSEMENT to
Patrol Report of
SIXTH Coordinated Attack Group. NOTE: THIS REPORT WILL BE
DESTROYED PRIOR TO
ENTERING PATROL AREA.

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: War Patrol of Coordinated Attack Group 17.12.
(16 May to 1 July 1944).

1. This coordinated attack group conducted its patrol west
of the Marianas Islands and in the Luzon Strait area. The group was
commanded by Captain L. N. Blair, U.S. Navy, and consisted of the
U.S.S. PILOTFISH (SS314), the U.S.S. PINTADO (SS387), and the U.S.S. FILOR-
FISH (SS386) up until 8 June when low fuel caused the U.S.S. SHARK to drop
out and return to base, at which time the U.S.S. TUNNY (SS282) replaced
her.

2. All of the attacks were conducted in one very busy week.
During this week the PINTADO contacted five convoys that had been
located by the U.S.S. SILVERSIDES (SS236), who in turn sent a report
which enabled the group to make contact. This convoy was attacked
first by the PINTADO in the early morning of 1 June and resulted in
sinking two freighters. The remnants of this convoy joined up with
another small one, and this combined convoy was then trailed by the
attack group until midnight of 1 June. In the late afternoon of 1
June, the PILOTFISH contacted convoy No. 3, which he trailed upon or-
ders from the task group commander. After the SHARK and PINTADO lost
the first two convoys, they then went in search of the third. At 2300
on 2 June the SHARK was able to attack this convoy, sinking a tanker
and damaging a freighter. The group continued to trail this convoy,
endeavoring to attack. On the afternoon of 3 June the SHARK contacted
a fourth convoy. Later in the afternoon, the task group commander di-
rected the SHARK and PILOTFISH to track and attack this latter convoy
because it was loaded. At the same time, he instructed the PINTADO
to hang on to convoy No. 3. About midnight of 3 June the task group
commander ordered the PINTADO to cease trailing No. 3 and join up with
the group to work on the fourth convoy. This convoy was finally at-
tacked by the SHARK late in the afternoon of 4 June with the result
that a loaded transport was sunk. In the early morning hours of 5
June convoy No. 5 was contacted but was not trailed because the task
group desired to make more attacks on the loaded convoy No. 4.
4. Late in the afternoon of 5 June the SHARK succeeded in sinking two
more freighters in this convoy and just after midnight on 6 June the
PINTADO probably sank another freighter; then in a daylight attack
about noon on 6 June the SHARK sank two more freighters. Thus, after
a three day
chase, the group succeeded, by virtue of individual attacks, in sink-
ing one transport, four freighters, and damaging another freighter in

- 1 -

[STAMP: EXTRA ORIGINAL]
SORG MICRO
PHOTO-LAB OP-16
RETURN TO F-4253

— page 185 —
[HANDWRITTEN: F4253]
FF12-10/A16-3(15)/(16) SUBMARINE FORCE, PACIFIC FLEET mr
Care of Fleet Post Office,
San Francisco, California,
29 July 1944

Serial 01551
[HANDWRITTEN: 6]
CONFIDENTIAL
FIRST ENDORSEMENT to
Patrol Report of
SIXTH Coordinated Attack Group. NOTE: THIS REPORT WILL BE
DESTROYED PRIOR TO
ENTERING PATROL AREA.

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: War Patrol of Coordinated Attack Group 17.12.
(16 May to 1 July 1944).

1. This coordinated attack group conducted its patrol west
of the Marianas Islands and in the Luzon Strait area. The group was
commanded by Captain L. N. Blair, U.S. Navy, and consisted of the
U.S.S. PILOTFISH (SS314), the U.S.S. PINTADO (SS387), and the U.S.S. FILOR-
FISH (SS386) up until 8 June when low fuel caused the U.S.S. SHARK to drop
out and return to base, at which time the U.S.S. TUNNY (SS282) replaced
her.

2. All of the attacks were conducted in one very busy week.
During this week the PINTADO contacted five convoys that had been
located by the U.S.S. SILVERSIDES (SS236), who in turn sent a report
which enabled the group to make contact. This convoy was attacked
first by the PINTADO in the early morning of 1 June and resulted in
sinking two freighters. The remnants of this convoy joined up with
another small one, and this combined convoy was then trailed by the
attack group until midnight of 1 June. In the late afternoon of 1
June, the PILOTFISH contacted convoy No. 3, which he trailed upon or-
ders from the task group commander. After the SHARK and PINTADO lost
the first two convoys, they then went in search of the third. At 2300
on 2 June the SHARK was able to attack this convoy, sinking a tanker
and damaging a freighter. The group continued to trail this convoy,
endeavoring to attack. On the afternoon of 3 June the SHARK contacted
a fourth convoy. Later in the afternoon, the task group commander di-
rected the SHARK and PILOTFISH to track and attack this latter convoy
because it was loaded. At the same time, he instructed the PINTADO
to hang on to convoy No. 3. About midnight of 3 June the task group
commander ordered the PINTADO to cease trailing No. 3 and join up with
the group to work on the fourth convoy. This convoy was finally at-
tacked by the SHARK late in the afternoon of 4 June with the result
that a loaded transport was sunk. In the early morning hours of 5
June convoy No. 5 was contacted but was not trailed because the task
group desired to make more attacks on the loaded convoy No. 4.
4. Late in the afternoon of 5 June the SHARK succeeded in sinking two
more freighters in this convoy and just after midnight on 6 June the
PINTADO probably sank another freighter; then in a daylight attack
about noon on 6 June the SHARK sank two more freighters. Thus, after
a three day
chase, the group succeeded, by virtue of individual attacks, in sink-
ing one transport, four freighters, and damaging another freighter in

- 1 -

[STAMP: EXTRA ORIGINAL]
SORG MICRO
PHOTO-LAB OP-16
RETURN TO F-4253

— page 187 —
[HANDWRITTEN: Phyl (a) 2]
S3221/A4-3
U.S.S. BLACKFISH(SS221)
c/o Fleet Post Office,
San Francisco, California.
Serial: (002)

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

From: The Commander Task Group 17.11.
To : The Commander-in-Chief, United States Fleet.
Via : The Commander Submarine Forces, Pacific Fleet.
The Commander-in-Chief, Pacific Fleet.

Subject: Coordinated patrol of Task Group 17.11 composed of
U.S.S. SHARK(SS314), U.S.S. BLACKFISH(SS221), and
U.S.S. SEADRAGON(SS194), report of.

Reference: (a) War Patrol Report of U.S.S. Blackfish.
(b) War Patrol Report of U.S.S. Seadragon.
(c) War Patrol Report of U.S.S. Shark.
(d) Comsubpac Opord Despatch (231321) of Sept 1944.

Enclosure: *(A) Track Charts of the three coordinated attacks.
*(B) Detailed plan for coordinated patrol and attack
of Task Group 17.11.
*(C) Radio Log - Wopaco Frequency and SJ Radar.
* (To ComSubsPac only).

1. Task Group 17.11 was formed at Pearl Harbor on 22
September, 1944, and was composed of Group Commander in the USS
SEADRAGON(SS194), U.S.S. BLACKFISH(SS221) and U.S.S. SHARK(SS314),
with the following task unit designations respectively, 17.11.1,
17.11.2, and 17.11.3. This group was ordered to proceed from
Pearl to Saipan at best sustained speed. Departed Pearl on 23
September 1944, after a short conference for coordination of
exercises and tests enroute Saipan. Made daily tracking runs,
training dives, communication tests, and dives, Communication
and visibility tests with Shark guide and Blackfish and
Seadragon 10-12 miles to north and south respectively. Arrived
Saipan 3 October, after joining up with Task Group 17.19 early
that morning.

2. After conducting minor repairs, refueling and taking
on stores, Shark and Blackfish departed Saipan the evening of 4
October 1944 to run the Doctor Schedule of the Convoy College.
Seadragon was held up due to main motor troubles, but had instruc-
tions to join the pack as soon as possible. Enclosure (B) had
been originated while enroute Pearl to Saipan, discussed at Saipan
by all Commanding Officers, and was now placed in effect. The
night of 4 October, Shark broke down with main induction flooded
and loss of all power, possibly a cubicle fire, thus delaying
Shark and Blackfish, but maintaining anti-submarine listening watch
until early morn-
ing of 5 October when Shark reported repairs accomplished, and
patrol was resumed. A typical typhoon blew up during the next
two days, thus delaying Shark and Blackfish, but helped Seadragon
to catch up which she did on 8 October as the group entered the
area.

- 1 -

— page 187 —
[HANDWRITTEN: Phyl (a) 2]
S3221/A4-3
U.S.S. BLACKFISH(SS221)
c/o Fleet Post Office,
San Francisco, California.
Serial: (002)

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

From: The Commander Task Group 17.11.
To : The Commander-in-Chief, United States Fleet.
Via : The Commander Submarine Forces, Pacific Fleet.
The Commander-in-Chief, Pacific Fleet.

Subject: Coordinated patrol of Task Group 17.11 composed of
U.S.S. SHARK(SS314), U.S.S. BLACKFISH(SS221), and
U.S.S. SEADRAGON(SS194), report of.

Reference: (a) War Patrol Report of U.S.S. Blackfish.
(b) War Patrol Report of U.S.S. Seadragon.
(c) War Patrol Report of U.S.S. Shark.
(d) Comsubpac Opord Despatch (231321) of Sept 1944.

Enclosure: *(A) Track Charts of the three coordinated attacks.
*(B) Detailed plan for coordinated patrol and attack
of Task Group 17.11.
*(C) Radio Log - Wopaco Frequency and SJ Radar.
* (To ComSubsPac only).

1. Task Group 17.11 was formed at Pearl Harbor on 22
September, 1944, and was composed of Group Commander in the USS
SEADRAGON(SS194), U.S.S. BLACKFISH(SS221) and U.S.S. SHARK(SS314),
with the following task unit designations respectively, 17.11.1,
17.11.2, and 17.11.3. This group was ordered to proceed from
Pearl to Saipan at best sustained speed. Departed Pearl on 23
September 1944, after a short conference for coordination of
exercises and tests enroute Saipan. Made daily tracking runs,
training dives, communication tests, and dives, Communication
and visibility tests with Shark guide and Blackfish and
Seadragon 10-12 miles to north and south respectively. Arrived
Saipan 3 October, after joining up with Task Group 17.19 early
that morning.

2. After conducting minor repairs, refueling and taking
on stores, Shark and Blackfish departed Saipan the evening of 4
October 1944 to run the Doctor Schedule of the Convoy College.
Seadragon was held up due to main motor troubles, but had instruc-
tions to join the pack as soon as possible. Enclosure (B) had
been originated while enroute Pearl to Saipan, discussed at Saipan
by all Commanding Officers, and was now placed in effect. The
night of 4 October, Shark broke down with main induction flooded
and loss of all power, possibly a cubicle fire, thus delaying
Shark and Blackfish, but maintaining anti-submarine listening watch
until early morn-
ing of 5 October when Shark reported repairs accomplished, and
patrol was resumed. A typical typhoon blew up during the next
two days, thus delaying Shark and Blackfish, but helped Seadragon
to catch up which she did on 8 October as the group entered the
area.

- 1 -

— page 188 —
C-O-N-F-I-D-E-N-T-I-A-L

Subject: Coordinated patrol of Task Group 17.11 composed of
         U.S.S. SHARK(SS314), U.S.S. BLACKFISH(SS221) and
         U.S.S. SEADRAGON(SS194), report of.

— page 188 —
C-O-N-F-I-D-E-N-T-I-A-L

Subject: Coordinated patrol of Task Group 17.11 composed of
         U.S.S. SHARK(SS314), U.S.S. BLACKFISH(SS221) and
         U.S.S. SEADRAGON(SS194), report of.

— page 189 —
C-O-N-F-I-D-E-N-T-I-A-L

Subject:
Coordinated patrol of Task Group 17.11 composed of
U.S.S. SHARK(SS314), U.S.S. BLACKFISH(SS221), and
U.S.S. SEADRAGON(SS194), report of.

— page 189 —
C-O-N-F-I-D-E-N-T-I-A-L
Subject: Coordinated patrol of Task Group 17.11 composed of
U.S.S. SHARK(SS314), U.S.S. BLACKFISH(SS221), and
U.S.S. SEADRAGON(SS194), report of.

— page 190 —
C-O-N-F-I-D-E-N-T-I-A-L

Subject: Coordinated patrol of Task Group 17.11 composed of
         U.S.S. SHARK(SS314), U.S.S. BLACKFISH(SS221), and
         U.S.S. SEADRAGON(SS194), report of.

4. The SJ was used to full advantage between ships. Blackfish was
designated to guard Radio Chunking, and all information obtained
was passed to the Shark by SJ radar. Radio Chunking is improving
in quality of information obtained between the convoy, enemy
sightings by planes and receipt of that information by submarines
in most cases renders the information useless to submarines in
the College. Reception of NKW was excellent. Reception of NPM
was good during the early evening, but towards morning it faded
considerably.

5. It is recommended that a universal grid chart be made
up for the entire convoy college area for use of Coordinated
Attack Groups. Closer analysis of previous patrols, enemy
contacts and sound conditions could be accomplished if each sub-
marine referred to the same area in the Campus in her patrol re-
port. As it is, in order to look into the frequency of contacts,
and the sound conditions at various times of the year from pre-
vious reports, it is necessary to look up each latitude and long-
itude of those items. It seems that it would be much simpler for
reference, if all subs used a standard system of numbered squares
for rotating patrol within the designated areas of the Convoy
College.

6. It is recommended that the following damage to the
enemy be credited:

SEADRAGON       - - 1 AK sunk
                - - 1 AK sunk
                - - 1 AK sunk
                - - 1 CV damaged

SNOOK           - - 1 AK damaged(after joining T.G. 17.11)

BLACKFISH       - - None.

SHARK           - - Unknown.

[SIGNATURE: Robert F. Sellars]
ROBERT F. SELLARS.

— page 190 —
C-O-N-F-I-D-E-N-T-I-A-L

Subject: Coordinated patrol of Task Group 17.11 composed of
         U.S.S. SNOOK(SS279), U.S.S. BLACKFISH(SS221), and
         U.S.S. SEADRAGON(SS194), report of.

4. The SJ was used to full advantage between ships. Blackfish was
designated to guard Radio Chunking, and all information obtained
was passed to the Shark by SJ radar. Radio Chunking is improving
in quality of information, although the time lag between convoy
sightings by planes and receipt of that information by submarines
in most cases renders the information useless to submarines in
the Convoy College area. Reception of NKN was excellent. Reception of NPM
was good during the early evening, but towards morning it faded
considerably.

5. It is recommended that a universal grid chart be made
up for the entire convoy college area for use of Coordinated
Attack Groups. Closer analysis of previous patrols, attacks,
contacts and sound conditions could be accomplished if each sub-
marine referred to the same area in the Campus in her patrol re-
port. As it is, in order to look into the frequency of contacts,
and the sound conditions at various times of the year from pre-
vious reports, it is necessary to look up each latitude and long-
itude of those items. It seems that it would be much simpler, for
reference, if all subs used a standard system of numbered squares
for rotating patrol within the designated areas of the Convoy
College.

6. It is recommended that the following damage to the
enemy be credited:

SEADRAGON - - 1 AK sunk
          - - 1 AK sunk
          - - 1 AK sunk
          - - 1 CV damaged

SNOOK     - - 1 AK damaged(after joining T.G. 17.11)

BLACKFISH - - None.

SHARK     - - Unknown.

[SIGNATURE: Robert F. Sellars]
ROBERT F. SELLARS.

— page 191 —
[HANDWRITTEN: F.4259]

FF12-10/A16-3(15)
Serial 02020
CONFIDENTIAL
FIRST ENDORSEMENT to
War Patrol Report of Nineteenth
Coordinated Attack Group.

SUBMARINE FORCE, PACIFIC FLEET
Care of Fleet Post Office,
San Francisco, California,
13 December 1944.
NOTE: THIS REPORT WILL BE
DESTROYED PRIOR TO
ENTERING PATROL AREA.

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: War Patrol of Coordinated Attack Group 17.11 Composed
of U.S.S. SHARK (SS314), U.S.S. BLACKFISH (SS221), and
U.S.S. SEADRAGON (SS194).

1. The Nineteenth Coordinated Attack Group, consisting of
the U.S.S. SHARK, the U.S.S. BLACKFISH, and the U.S.S. SEADRAGON, con-
ducted its patrol in areas between Luzon and Formosa. The Commanding
Officer of the SHARK was the Task Group Commander.

2. On 24 October, 1944, the Commanding Officer of the
BLACKFISH assumed command of the group. At this time, the U.S.S.
SHARK (SS221), with but three torpedoes remaining, joined the group.
On the 27th of October the SEADRAGON, out of torpedoes, left the group
and on the 28th the SNOOK departed.

3. Lost of the action of this group occurred between 21
October, when the SEADRAGON contacted an enemy task force and damaged
a large aircraft carrier and a cruiser, and October 24th. On the
night of 23-24 October the group contacted an enemy convoy which res-
ulted in the sinking of three freighters by the SEADRAGON. On the
night of 26 October the SNOOK succeeded in damaging a small freighter.

4. The Commander Submarine Force, Pacific Fleet, congratu-
lates the submarines of Task Group 17.11 for having inflicted the
damage upon the enemy.

SUNK
1 - Freighter (HIE MARU Type) - 5,500 tons (SEADRAGON Attack No. 2)
1 - Medium Freighter (LU) - 4,000 tons (SEADRAGON Attack No. 3)
1 - Medium Freighter (LU) - 4,000 tons (SEADRAGON Attack No. 4)
TOTAL SUNK 13,500 tons

DAMAGED
1 - Aircraft Carrier (HAYATAKA - 28,000 tons (SEADRAGON Attack No. 1)
Class) (LC)
1 - UN (Probably Cruiser) - 4,000 tons (SEADRAGON Attack No. 1)
1 - Unknown - 2,000 tons (SNOOK Attack No. 5)
TOTAL DAMAGED 34,000 tons

TOTAL SUNK AND DAMAGED 47,500 tons

Distribution and authenti-
cation on following page.
- 1 -

[SIGNATURE: C. A. LOCKWOOD]
EXTRA COPY
SORG. MICRO
PHOTO LAB OP-16
[STAMP: RETURN TO F-4253]
CD, 31.

— page 191 —
[HANDWRITTEN: F.4259]

FF12-10/A16-3(15)
Serial 02020
CONFIDENTIAL
FIRST ENDORSEMENT to
War Patrol Report of Nineteenth
Coordinated Attack Group.

SUBMARINE FORCE, PACIFIC FLEET
Care of Fleet Post Office,
San Francisco, California,
13 December 1944.
NOTE: THIS REPORT WILL BE
DESTROYED PRIOR TO
ENTERING PATROL AREA.

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: War Patrol of Coordinated Attack Group 17.11 Composed
of U.S.S. SHARK (SS314), U.S.S. BLACKFISH (SS221), and
U.S.S. SEADRAGON (SS194).

1. The Nineteenth Coordinated Attack Group, consisting of
the U.S.S. SHARK, the U.S.S. BLACKFISH, and the U.S.S. SEADRAGON, con-
ducted its patrol in areas between Luzon and Formosa. The Commanding
Officer of the SHARK was the Task Group Commander.

2. On 24 October, 1944, the Commanding Officer of the
BLACKFISH assumed command of the group. At this time, the U.S.S.
SHARK (SS221), with but three torpedoes remaining, joined the group.
On the 27th of October the SEADRAGON, out of torpedoes, left the group
and on the 28th the SNOOK departed.

3. Lost of the action of this group occurred between 21
October, when the SEADRAGON contacted an enemy task force and damaged
a large aircraft carrier and a cruiser, and October 24th. On the
night of 23-24 October the group contacted an enemy convoy which res-
ulted in the sinking of three freighters by the SEADRAGON. On the
night of 26 October the SNOOK succeeded in damaging a small freighter.

4. The Commander Submarine Force, Pacific Fleet, congratu-
lates the submarines of Task Group 17.11 for having inflicted the
damage upon the enemy.

SUNK
1 - Freighter (HIE MARU Type) - 5,500 tons (SEADRAGON Attack No. 2)
1 - Medium Freighter (LU) - 4,000 tons (SEADRAGON Attack No. 3)
1 - Medium Freighter (LU) - 4,000 tons (SEADRAGON Attack No. 4)
TOTAL SUNK 13,500 tons

DAMAGED
1 - Aircraft Carrier (HAYATAKA - 28,000 tons (SEADRAGON Attack No. 1)
Class) (LC)
1 - UN (Probably Cruiser) - 4,000 tons (SEADRAGON Attack No. 1)
1 - Unknown - 2,000 tons (SNOOK Attack No. 5)
TOTAL DAMAGED 34,000 tons

TOTAL SUNK AND DAMAGED 47,500 tons

Distribution and authenti-
cation on following page.
- 1 -

[SIGNATURE: C. A. LOCKWOOD]
EXTRA COPY
SORG. MICRO
PHOTO LAB OP-16
[STAMP: RETURN TO F-4253]
CD, 31.

— page 192 —
hch

FF12-10/A16-3(15)
Serial 02826
CONFIDENTIAL

SUBMARINE FORCE, PACIFIC FLEET
Care of Fleet Post Office,
San Francisco, California,
13 December 1944.

FIRST ENDORSEMENT to
Patrol Report of Nineteenth
Coordinated Attack Group.

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

Subject: War Patrol of Coordinated Attack Group 17.11 Composed
of U.S.S. SHARK (SS314), U.S.S. BLACKFIN (SS221), and
U.S.S. SEADRAGON (SS194).

— page 192 —
FF12-10/A16-3(15)
Serial 02826
CONFIDENTIAL

FIRST ENDORSEMENT to
Patrol Report of Nineteenth
Coordinated Attack Group.

Subject: War Patrol of Coordinated Attack Group 17.11 Composed
of U.S.S. SHARK (SS314), U.S.S. BLACKFIN (SS221), and
U.S.S. SEADRAGON (SS194).

DISTRIBUTION:
(Complete reports)
Cominch (7)
CNO (5)
Cincpac (6)
Intel.Cen.Pac.Ocean Areas (1)
Comservpac (1)
Cinclant (1)
Comsublant (1)
S/W School, NH (6)
CO, S/M Base, PH (2)
Comsopac (1)
Comsowespac (2)
Comsubsowespac (2)
CTG 71.9 (1)
Comnorpac (40)
Comsubspac (3)
ComsubspacSubordcom
All Squadron Commanders (2)
Submarine Division (3)
Substrainpac (1)
All Submarines, Pacific (1)
Comfleetair.in.O (1)
O-in-C,ASW TU, FltAirWing TWO (1)
SUBAD, MI (2)
[HANDWRITTEN: C. H. Rucker]
[SIGNATURE: L. L. HYNES]
L. L. HYNES, 2nd,
Flag Secretary. SUBMARINE FORCE, PACIFIC FLEET hch
Care of Fleet Post Office,
San Francisco, California,
13 December 1944.

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

— page 193 —
[STAMP: DECLASSIFIED - OPNAV INST 5500.30]
[STAMP: BY OP-09B1C DATE 30APR82]
[HANDWRITTEN: Serial 000000]
[HANDWRITTEN: FIRST]

FF12-10/A4-1 No
[STAMP: DECLASSIFIED] COMMANDER SUBMARINE FORCE
UNITED STATES PACIFIC FLEET
Care of Fleet Post Office,
San Francisco, California,
NOV 27 1944

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. SHARK (SS314) - Loss of.

1. It is with deep regret that the Commander Sub-
marine Force, Pacific Fleet, reports that the U.S.S. SHARK is
overdue from her Third War Patrol and must be presumed to be
lost.

2. In accordance with Commander Task Force Seven-
teen despatch Operation Order No. 324-44, the U.S.S. SHARK,
commanded by Commander Edward N. Blakely, U.S. Navy, in company
with the U.S.S. SEADRAGON and U.S.S. BLACKFISH, departed Pearl
Harbor on 23 September 1944, and proceeded to Saipan. These
three submarines arrived at Saipan on 3 October 1944, East
Longitude Date, and on the late afternoon of that day in obedi-
ence to additional despatch orders, they departed Saipan in
company to conduct a coordinated patrol in the vicinity of
Luzon Strait. In addition to his duties as Commanding Officer
of the SHARK, Commander Blakely had command of this coordinated
attack group.

3. Although the SHARK was in constant communication
with the SEADRAGON and BLACKFISH, no further word was received
from her by this command until the 22nd of October, on which
date she reported that she had made contact with four large
enemy vessels in the vicinity of Latitude 20°21' North, Longi-
tude 117°00' East. In this message the SHARK also reported that
she still had her full load of twenty-four torpedoes on board,
so up until that time she had made no torpedo attacks. No
further word has been received by this command from the SHARK.
However, the patrol report of the U.S.S. SEADRAGON states that
on 24 October 1944, she received a message from
the SHARK stating that she had made radar contact with a single
freighter at 0615 I on 24 October. At 1858 Item on 24 October the SEADRAGON attempted to contact the
SHARK by radio but was unable to raise her and neither the SEA-
DRAGON nor the BLACKFISH was able to raise the SHARK after that
time.

[STAMP: DECLASSIFIED] -1-

— page 193 —
[STAMP: DECLASSIFIED - OPNAV INST 5510.16]
[HANDWRITTEN: BY OP-09B1S DATE 30Apr96]

FF12-10/A4-1
Serial 000.30
[HANDWRITTEN: 262]

COMMANDER SUBMARINE FORCE
UNITED STATES PACIFIC FLEET

[HANDWRITTEN: FIRST]
No

Care of Fleet Post Office,
San Francisco, California.

NOV 27 1944

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. SHARK (SS314) - Loss of.

1. It is with deep regret that the Commander Sub-
marine Force, Pacific Fleet, reports that the U.S.S. SHARK is
overdue from her Third War Patrol and must be presumed to be
lost.

2. In accordance with Commander Task Force Seven-
teen despatch Operation Order No. 324-44, the U.S.S. SHARK,
commanded by Commander Edward N. Blakely, U.S. Navy, in company
with the U.S.S. SEADRAGON and U.S.S. BLACKFISH, departed Pearl
Harbor on 23 September 1944, and proceeded to Saipan. These
three submarines arrived at Saipan on 3 October 1944, East
Longitude Date, and on the late afternoon of that day in obedi-
ence to additional despatch orders, they departed Saipan in
company to conduct a coordinated patrol in the vicinity of
Luzon Strait. In addition to his duties as Commanding Officer
of the SHARK, Commander Blakely had command of this coordinated
attack group.

3. Although the SHARK was in constant communication
with the SEADRAGON and BLACKFISH, no further word was received
from her by this command until the 22nd of October, on which
date she reported that she had made contact with four large
enemy vessels in the vicinity of Latitude 20°28' North, Longi-
tude 117°00' East. In this message the SHARK also reported that
she still had her full load of twenty-four torpedoes on board,
so up until that time she had made no torpedo attacks. No
further word has been received by this command from the SHARK.
However, the patrol report of the U.S.S. SEADRAGON states that
on 24 October 1944, she received a message from
the SHARK stating that she had made radar contact with a single
freighter. This is the last known message from the SHARK. At
1858 Item on 24 October the SEADRAGON attempted to contact the
SHARK by radio but was unable to raise her and neither the SEA-
DRAGON nor the BLACKFISH was able to raise the SHARK after that
time.

[STAMP: CONFIDENTIAL]
[STAMP: DECLASSIFIED]
-1-

— page 194 —
[HANDWRITTEN: 0267X]
He
FF12-10/A4-1 COMMANDER SUBMARINE FORCE
Serial 00963 UNITED STATES PACIFIC FLEET
Care of Fleet Post Office,
San Francisco, California.
[HANDWRITTEN: 1944]
DECLASSIFIED
SECRET

Subject: U.S.S. SHARK (SS314) - Loss of.

4. Neither the SEADRAGON nor the BLACKFISH had any
information concerning any attacks made by the SHARK during her
last patrol. However, despatch 130750 November, originated by
Commander Naval Unit, Fourteenth Air Force and passed to this
command by Commander Naval Group China, may concern an attack
made by the SHARK. It is quoted in part as follows:

"NO IDENTIFICATION OF SHIP SUNK OTHER THAN FOUR HATCHES
AND TWO MASTS IN CONVOY OF APPROXIMATELY FIFTEEN DASH
TWENTY DEPARTED MANILA TWO ONE OCTOBER X AT LEAST TWO
DOG ESCORT X THREE TORPEDOES FIRED TWO HIT SECOND
FIRST AND STERN AT SIXTEEN FIVE FIVE ITEM X SECOND
PASSED BOW THIRTY SECONDS LATER X THIRD HIT
THIRTY HOLD STARBOARD SIDE AT SEVENTEEN FIVE ITEM X
SHIP AFLOAT APPROXIMATELY THREE HOURS BEFORE SINKING X
POSITION ONE HUNDRED MILES NORTHEAST OF PRATAS ISLAND X
COURSE NAN NAN EAST X FINAL DESTINATION BELIEVED JAPAN X
CONVOY OF EIGHTEEN HUNDRED AMERICANS THIRTY
SIXTY THIRTY FIVE ITEM X
HOPEFUL THAT ALL PRAYED FOR BOMBING OR TORPEDO X THESE
FIVE ONLY SURVIVORS KNOWN X"

As no other submarine of this command made an attack correspond-
ing to the time and position given above, it is believed that the
SHARK was responsible for the above sinking. As the SEADRAGON
received a contact report from the SHARK a few hours prior to
the above attack and was unable to raise her two hours subsequent
to that attack, it is probable that the SHARK was sunk from the
countermeasures which followed that attack. Since September
when several submarines rescued many Australian and British
prisoners of war being taken to the Japanese Empire, all sub-
marines of this force have been instructed to search for Allied
prisoners of war bound Japanese ships in the vicinity of all sap-
anese ships. In view of these orders it is possible that the
SHARK may have been sunk while attempting to rescue American
prisoners of war.

DECLASSIFIED -2-

— page 195 —
[HANDWRITTEN: 07672]

FF12-10/A4-1
Serial 00963

He
COMMANDER SUBMARINE FORCE
UNITED STATES PACIFIC FLEET
Care of Fleet Post Office,
San Francisco, California,
[STAMP: NOV 27 1944]

[STAMP: TOP SECRET]
[STAMP: DECLASSIFIED]
Subject: U.S.S. SHARK (SS314) - Loss of.

— page 195 —
[HANDWRITTEN: 07672]
FF12-10/A4-1                                                              He
Serial 00963                                       COMMANDER SUBMARINE FORCE
                                                   UNITED STATES PACIFIC FLEET
[STAMP: TOP SECRET]
[STAMP: DECLASSIFIED]                                  Care of Fleet Post Office,
                                                       San Francisco, California,
                                                       [STAMP: NOV 27 1944]

Subject:        U.S.S. SHARK (SS314) - Loss of.

                 5.    Had the SHARK remained her full time on station
and departed her area on 7 November 1944, as required by her
operation order, at normal cruising speed she would have
reached Midway about 17 November 1944. Attempts by this com-
mand to raise the SHARK by radio have failed.

                 6.    In view of the above facts, the SHARK must be
presumed to have been lost on 24 October 1944, while on war
patrol in enemy waters.

                 7.    It is impossible to determine whether the regis-
tered publications carried by the SHARK have been compromised.
As the patrol area assigned the SHARK was all nonsalvageable
water she carried all publications allowed the submarines
patrolling such waters.

                 8.    Commander Blakely has been in command of the
SHARK since the time of commissioning of that vessel. He was
the recipient of the Navy Cross for his outstanding First War
Patrol and he was also awarded a letter of commendation with
ribbon for the second War Patrol of the SHARK, but unfortu-
nately this latter award had not been presented. The results
obtained on the previous patrols of the SHARK are as follows:

                               FIRST PATROL
                       From 16 May 1944, to 17 June 1944

                                 S U N K

        Date           Type Ship           Tonnage
[STAMP: DECLASSIFIED]
        6-2-44         Tanker              10,000
        6-4-44         Passenger Freighter 8,700
        6-5-44         Freighter           2,500
        6-5-44         Freighter           5,000

                               D A M A G E D

        6-2-44         Freighter           5,600

                                   -3-

— page 196 —
[HANDWRITTEN: 07678]

FF12-10/AA-1
Serial 00963

[STAMP: DECLASSIFIED]

Subject: U.S.S. SHARK (SS314) - Loss of.

SECOND PATROL
From 10 July 1944, to 29 August 1944

D A M A G E D

Date Type Ship Tonnage
7-19-44 Freighter 4,300

-oOo-

Total tonnage sunk 32,200
Total tonnage damaged 9,900
Grand Total 42,100

C. A. LOCKWOOD, Jr.

Copy to:
ComSubRon 22.
ComSubDiv 222.

— page 197 —
[HANDWRITTEN: From Box # 190 (1-40 Series) & all new]
[HANDWRITTEN: -4 NOV 1952] [HANDWRITTEN: new]
[HANDWRITTEN: 02672]
[HANDWRITTEN: 317/Ye]
[HANDWRITTEN: No.]
[HANDWRITTEN: 00]
[HANDWRITTEN: 001]
[HANDWRITTEN: 01]
[HANDWRITTEN: 015]
[HANDWRITTEN: 1]

[STAMP: DECLASSIFIED]
[HANDWRITTEN: Serial 001085]

[STAMP: DEC 5 1944]
1st Endorsement to
ComSubaPac Top-secret
ltr. FF12-10/A4-1
Serial 00963, dated
27 November 1944.

From: Commander in Chief, U. S. Pacific Fleet.
To: Commander in Chief, United States Fleet.

Subject: U.S.S. SHARK (SS 314) - Loss of.

1. Forwarded with great regret. The basic letter
relates a splendid performance for this fine ship.

C. H. MCMORRIS
Chief of Staff

[HANDWRITTEN: 2]
[HANDWRITTEN: 21]
[HANDWRITTEN: 251]
[HANDWRITTEN: 3]
[HANDWRITTEN: 312]
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[HANDWRITTEN: 6]
[HANDWRITTEN: 601]
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[HANDWRITTEN: 611]
[HANDWRITTEN: 62]
[HANDWRITTEN: 63]
[HANDWRITTEN: 64]
[HANDWRITTEN: 65]
[HANDWRITTEN: 651]
[HANDWRITTEN: Ins.Gen.Pac.]

Copy to:
ComSubaPac

[HANDWRITTEN: mailed 12/5/44]
[STAMP: DECLASSIFIED]

— page 197 —
[HANDWRITTEN: From Box # 190 (1-40 Series) & all -4 NOV 1952]
[HANDWRITTEN: new 02672]

317/Ye

No.
00
001
01
015
1

[HANDWRITTEN: D-R]
[STAMP: DECLASSIFIED]

DEC 5 1944

1st Endorsement to
ComSubaPac Top-secret
ltr. FF12-10/A4-1
Serial 00963, dated
27 November 1944.

From: Commander in Chief, U. S. Pacific Fleet.
To: Commander in Chief, United States Fleet.

Subject: U.S.S. SHARK (SS 314) - Loss of.

1. Forwarded with great regret. The basic letter
relates a splendid performance for this fine ship.

C. H. MCMORRIS
Chief of Staff

Copy to:
ComSubaPac

[HANDWRITTEN: mailed 12/5/44]

[STAMP: DECLASSIFIED]

2
21
251
[UNCLEAR: 300]
312
313
315
316
32

33
331
332
333
334

4
43
44
45
46
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49

[HANDWRITTEN: 5]

6
601
61
611
62
63
64
[HANDWRITTEN: 65]
651
Ins.Gen.Pac.

— page 200 —
UNITED STATES
SUBMARINE LOSSES

WORLD WAR II

Reissued with an Appendix of
Axis Submarine Losses, fully indexed,

by

Naval History Division
Office of the Chief of Naval Operations
Washington: 1963

— page 200 —
UNITED STATES
SUBMARINE LOSSES

WORLD WAR II

Reissued with an Appendix of
Axis Submarine Losses, fully indexed,

by

Naval History Division
Office of the Chief of Naval Operations
Washington: 1963

— page 201 —
END OF REEL
JOB NO. [HANDWRITTEN: H. 108]

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.45 | 2.8 | 2.5
.32 | 2.2
.36 | 2.0
.40 | 1.8

1.4 | 1.6

THIS MICROFILM IS
THE PROPERTY OF
THE UNITED STATES
GOVERNMENT

[SEAL: DEPARTMENT OF DEFENSE, UNITED STATES OF AMERICA, with eagle emblem]

MICROFILMED BY
NPPSO-NAVAL DISTRICT WASHINGTON
MICROFILM SECTION

— page 201 —
END OF REEL
JOB NO. [HANDWRITTEN: H. 108]

||| 1.0
||| 1.1
||| 1.25

.45 | 2.8 | 2.5
.32 | 2.2
.36 | 2.0
.40 | 1.8

1.4 | 1.6

THIS MICROFILM IS
THE PROPERTY OF
THE UNITED STATES
GOVERNMENT

[SEAL: DEPARTMENT OF DEFENSE, UNITED STATES OF AMERICA, with eagle emblem]

MICROFILMED BY
NPPSO-NAVAL DISTRICT WASHINGTON
MICROFILM SECTION