U.S.S. SEA DEVIL (SS-400) — war patrol report SS-400_SEA_DEVIL.pdf

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[HANDWRITTEN: I]
[HANDWRITTEN: H]
[HANDWRITTEN: I]
[HANDWRITTEN: -]
[HANDWRITTEN: -]
[HANDWRITTEN: (curved line)]

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START OF REEL
JOB NO. [HANDWRITTEN: G-108]

[MICROFILM RESOLUTION CHART NUMBERS - typed]
1.0
1.1
1.25 | 1.4 | 1.6
| 2.8 | 2.5
| 3.2 | 2.2
| 3.6 | 2.0
| 4.0 | 1.8

OPERATOR [HANDWRITTEN: M. Monroe]
DATE [HANDWRITTEN: 3/5/80]

THIS MICROFILM IS
THE PROPERTY OF
THE UNITED STATES
GOVERNMENT

[SEAL: Department of Defense emblem with "DEPARTMENT OF DEFENSE" and "UNITED STATES OF AMERICA"]

MICROFILMED BY
NPPSO-NAVAL DISTRICT WASHINGTON
MICROFILM SECTION

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

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[HANDWRITTEN: SEA DEVIL (SS-400)]
[HANDWRITTEN: WORLD WAR II PATROL FILE]
[HANDWRITTEN: ALL MATERIAL ON THIS REEL IS DECLASSIFIED]

[SIGNATURE: J.A. KOONTZ]

— page 5 —
Division of Naval History
Ships' Histories Section
Navy Department

HISTORY OF USS SEA DEVIL (SS 400)

Unlike other combatant type ships, which were only component parts of
an operation, each submarine patrol was an operation in itself. As the
American offensive rolled across the Pacific, submarines were employed to
support fleet actions as pickets, weather stations, and landing reconnaisance
raiders; but their most important function was cutting enemy communications,
to his great sea empire, boldly pursuing and attacking shipping in Japanese
home waters.

The history of the USS SEA DEVIL began on 18 November 1943, when her
keel was laid at the U. S. Navy Yard, Portsmouth, New Hampshire. She was
named for one of the giant rays belonging to the family Mobulidae. These
fish range throughout all warm seas and grow to a huge size. Two cartilaginous
horn-like lobes project forward at the front of its head or each side - the
"devil's horns" - from which the name is derived. At the launching on 28
February 1944, she was sponsored by Mrs. S. S. Kennedy, wife of Rear Admiral
Kennedy. On 24 May 1944, the SEA DEVIL was commissioned and Commander
Ralph E. Styles, USN, assumed command.

After extensive training, the SEA DEVIL sailed for the Pacific, via
the Panama Canal, and arrived at Pearl Harbor on 9 August 1944. Voyage
repairs and late alterations were accomplished, and on 3 September she slipped
out of Pearl Harbor on her First War Patrol. While patrolling off the south
coast of Honshu on the night of 16 September, she made her first contact. In
a dawn submerged attack, four torpedoes were fired for two hits and the
destruction of an I-58 class submarine. Three later torpedo attacks were
made on a torpedo boat, a destroyer, and a small freighter, but no hits
were scored. She returned to Majuro on 25 October 1944, where refitting out
was accomplished by the USS HOWARD W. GILMORE.

The SEA DEVIL departed for her Second War Patrol on 19 November 1944,
to be conducted in the Nansei Shoto area. By December Japanese merchant
tonnage afloat had reached a new low. So much of it was on the bottom
geographically that the hunting submarines could find little to shoot at.
However on 2 December, while blockading the islands of the home Empire, the
SEA DEVIL ambushed a large convoy off southwest Kyushu. In a night sub-
merged attack, her torpedoes sank the 6,859 freighter AKIGAWA MARU, and the
9,467 ton passenger-cargoman HAWAII MARU. On 9 December contact was made on
a high speed task force. In a midnight submerged attack, the large carrier
JUNYO came to grief with two torpedo hits, and another light cruiser was
damaged with one hit. For the remainder of the month, Japanese shipping in
home waters was almost non-existent, and the SEA DEVIL returned to Pearl
Harbor on 11 January 1945.

On 7 February 1945 the submarine departed Pearl Harbor on her Third
War Patrol. Eight days were spent at Saipan where a wolf pack consisting of
the TENCH, BALAO, GROUPER, and SEA DEVIL was formed for a patrol in the
Yellow Sea area. These wolf packs were organized on the model of Germans
in the Atlantic to make our patrols more effective. In April 1945, Japan

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-2- USS SEA DEVIL (SS 400)

was still trying to siphon sustenance from China and Manchuria, and Yellow
Sea convoys were a last, albeit expiring, hope. One of these convoys,
consisting of four merchant ships and three escorts, blundered into the SEA
DEVIL on 2 April. The SEA DEVIL surfaced into a soupy fog, and after track-
ing the convoy to determine its speed, course, and disposition, made a day-
light surface attack with fifteen torpedoes. Down went the freighters TAIJO
MARU, EDOGAWAWA MARU, and NISSHIN MARU for 10,866 tons. More hits sank two
of the three escorts.

While homeward bound south of Kyushu, on the night of 8 April, a
signal light was sighted close aboard. A search of the vicinity was con-
ducted, and three Marine aviators from the ESSEX Air Group were rescued from
rubber boats. The SEA DEVIL terminated her third patrol on 20 April at
Midway.

On 30 April 1945, Commander Ralph E. Styles was relieved by Lieutenant
Commander Charles F. McGivern, USN. While the B-29,s hammered Tokyo, and
American invasion forces battered their way across Okinawa, American sub-
marines concentrated on the blockade of Japan's Pacific Ports and the cutting
of Japanese shipping lines to China and Manchuria. Although now cut adrift
from her "conquered" territories, and almost totally bereft of industrial
resources and commercial outlets, Japan might have been able to survive for
a time as a "closed Empire" had she been able to import from
Korea, North China and Manchuria such vital necessities for domestic
existence as foodstuffs and coal. It was to prevent such, that the SEA DEVIL
conducted her fourth patrol in the Yellow Sea and East China Sea, beginning
19 May 1945. On 14 June a small freighter with two destroyer escorts was
sighted and tracked on the surface off the Shantung peninsula. In the en-
suing submerged attack, four torpedoes were fired at the freighter for two
fatal hits. On the 21st three trawlers were sunk by gunfire and three prisoners
taken.

While patrolling the south coast of Korea on the night of 29 June,
orders were received to search for aviators in the water 350 miles to the
southwestward. Nineteen hours later, the life rafts were located, and one
Army fighter pilot and ten Naval aviators were taken aboard. One man in a
rubber boat was missing, and after a fifteen hour search, he too was rescued.
The sub's patrol terminated on 10 July when she returned to Guam.

The SEA DEVIL sailed from Guam on 9 August 1945 for her Fifth War Pat-
rol, again assigned to the Yellow Sea area. While proceeding up the west
coast of Kyushu, on 15 August, news of the cessation of hostilities was
received. She was nevertheless ordered to proceed to the patrol area, and
the period from 17 - 28 August was spent destroying 58 drifting mines and
investigating the activities of small craft encountered. The patrol was
terminated with her arrival at Subic Bay, Philippine Islands on 3 September
1945.

Here she became the flag ship of Submarine Division Fifty-two, and con-
ducted training in the waters west of the island of Luzon. On 1 December the
SEA DEVIL sailed for home. She arrived at Pearl Harbor on 15 December and
departed the next day for San Francisco, arriving on 2 January 1946. After

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-3- USS SEA DEVIL (SS 400)
an overhaul at Mare Island she departed for Pearl Harbor. On 23 Mar 1946
she sailed for Tsingtao, China where she rendered anti-submarine warfare
training services. Following two simulated war patrols in Pacific waters,
the USS SEA DEVIL was placed out of commission in reserve in February 1948.
By Directive of January 1951, she was recommissioned, and as of July 1953
is active with the U. S. Pacific Fleet.

During her wartime career, the SEA DEVIL sank 39,525 tons of Japanese
shipping, receiving the Navy Unit Commendation for her Third War Patrol.
The citation reads as follows:
T
"For outstanding heroism in action against enemy Japanese
shipping and combatant units during her Third War Patrol in the
Yellow Sea Area from February 7 to April 20, 1945. Tenaciously
tracking her targets in bold defiance of heavy enemy screens
and extensive mine fields, the USS SEA DEVIL pressed home an
aggressive attack against a formidable convoy of four freighters
and three escorts. Penetrating the group's inner defenses, she
launched her devastating torpedoes in a series of five brilliantly
executed attacks to sink or severely damage all four cargo
vessels and two frigates. Daring and skilled in combat, the
SEA DEVIL also rescued three friendly downed aviators in a care-
fully planned night operation and took four Japaneses prisoners
of war. A valiant fighting ship, the SEA DEVIL served with
distinction in carrying the Battle of the Pacific into treacherous
enemy-controlled waters, and her notable combat record, reflects
the highest credit upon her heroic officers and men and upon
the United States Naval Service."

The submarine also earned five Battle Stars for participation in the
following operations:
1 Star/First Anti-Submarine Assessment
1 Star/Second Submarine War Patrol 19 November 1944
1 Star/Iwo Jima Operation
--
15 September 1944
11 January 1945
Assault and occupation of Iwo Jima
6
16 March 1945
1 S.ar/Okinawa Gunto Operation
Assault and occupation of Okinawa Gunto
17 March 6 April 1945
10 July 1945
1 Star/THIRD Fleet Operations against Japan
She also received the Navy Occupation Service Medal, Asia, for the
period 2-3 September 1945, and the China Service Medal for the period
26 May 14 July 1946.

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-4- USS SEA DEVIL (SS 400)

STATISTICS

OVERALL LENGTH                                312 feet
BEAM                                          27 feet
SPEED                                         20 knots
DISPLACEMENT                                  1452 tons
COMPLEMENT                                    8 officers and 72 men

Compiled: 14 December 1953

— page 9 —
DECLASSIFIED
CONFIDENTIAL
From:
To
Via:
:
Subject:
Enclosures:
1.
U.S.S. SEA DEVIL
DECLASSIFIED-ART. 0445, OPNAVINSJ 55/10.10
BY CPO9H DATE 6/15/70

The Commanding Officer, U.S.S. SEA DEVIL.
The Commander-in-Chief, United States Fleet.
(1) The Commander Submarine Division TWO EIGHTY ONE.
(2) The Commander Submarine Squadron TWENTY EICHT.
(3) The Commander Submarine Force, Pacific Fleet.
(4) The Commander-in-Chief, U.S. Pacific Fleet.
U.S.S.SEA DEVIL (SS400), Report of First War Patrol.
(A) Subject Report.
(B) Track chart (ComSubPac only).
(C) Additional Data Forms (ComSubPac only).
Enclosure (A), covering the first war patrol of this vessel
conducted in the Empire waters during the period 3 September 1944 to 25 Octo-
ber 1944, is forwarded herewith.

[SIGNATURE: R. E. STYLES.]

94953 FILMED

— page 15 —
CONFIDENTIAL
Subject:
U.S.S. SEA DEVIL
Report of FIRST War Patrol.
1505 Periscope depth. Sighted three planes toward the scene of the attack.
(A.C. #5). Commenced clearing the area at 2/3 speed.
1531 Heard two depth charges estimated to be 4 or 5 miles away, I guess they
haven't given up yet.
1903 Surfaced. Have decided to make a wide sweep around SHIONO MISIKI and patrol
the 100 fathom curve off iJKI SIKI tomorrow.
23 September
0415 Picked up two rotating radars on 187 MC and 218 MC.
0436 Submerged about 8 miles off the coast by radar range and commenced closing.
Taking fathometer readings every half hour.
0520 Daylight. Heavy misty fog with occasional rain. Visibility 500 to 1000
yards. Numerous sound contacts on small boats.
0850 Visibility suddenly lifted and periscope watch sighted train about three
miles away. Sounding 33 fathoms. Reversed course to head out to 100 fathom
curve. The 100 fathom curve is 4000 yards from the beach here.
0900 Fog set in again so came to 45' for a check with radar. No contacts except
land which is 5000 yards away. Will come to radar depth every half hour
as long as the visibility is bad.
1345 Fog lifted. Nothing in sight but two sampens and two small patrol boats
well up the coast.
1915 Surfaced. Overcast with heavy seas and occasional rain. Patrolling up and
down coast between MIKI S.KI and O SHIN. hoping to pick up some shipping
that had stopped for the night or because of the weather in some cove.
2130 Shifted over to patrol line between SHIONO ISKI and IRO S.KI.
24 September
0435 Submerged. Overcast and foggy with heavy seas.
1840 Surfaced. Decided to return to LIKI SKI.
25 September
Made an off shore sweep up and down the coast prior to diving trying, to
pick up any shipping anchored for the night in any of the small harbors on
radar. No contacts.
4
-6-

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(F) SHIP CONTACTS

NO. | TIME | LAT. | TYPES | INITIAL | EST. | HOW CON- | REMARKS
| DATE | LONG. | | RANGE | COURSE | TACTED
| | | | | SPEED |
9. | : 2208 | : 33-46 N. | : Large Patrol | : 9,000 | : 220° | : Sight | : Tracked and ran around.
| : (-9) | : 139-50 E | : Boat | : yds | : 5 kts | |
| : 9-29 |
10. | : 0108 | : 33-33 N. | : 5 ship | : 22,000 | : 215° | : R | : End around.
| : (-9) | : 139-48 E. | : convoy | : yds. | : 10.5 kts. | |
| : 9-30 |
11. | : 0625 | : 34-43 N. | : 1 small frtr. | : 12000 | : 320 | : PER | : Lost in fog.
| : (-9) | : 139-53 E. | : 2 escorts | : yds | | |
| : 10-4 |
[HANDWRITTEN: - 20 -]
12. | : 1216 | : 34-41 N. | : 2000 ton | : 8,000 | : 320° | : PER | : Attack d. See Narrative.
| : (-9) | : 139-45 E/ | : freighter (EU) | : yds. | : 8.3 kts | |
| : 10-16 | | | | | |

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CONFIDENTIAL
U.S.S. SEA DEVIL
(G) AIRCRAFT CONTACTS

CONTACT NUMBER | 1 | 2 | 3 | 4 | 5
DATE | : 9-14 | : 9-22 | : 9-22 | : 9-22 | : 9-22
S | Time (Zone) | : 1630 (-11) | : 0850 (-9) | : 0950 (-9) | : 1315 (-9) | : 1505 (-9)
U | Position: Lat. | : 32 52 N | : 33-27-5 N | : 33-28 N | : 33-30 N | : 33-27 N
B | Long. | : 152-50 E | : 135-31 E | : 135-28 E | : 135-34 E | : 135-31 E
M | Speed | : 15 | : 2 | : 2 | : 2 | : 2
A | Course | : 275° | : 250° | : 250° | : 150° | : 150°
R | Trim | : Surf | : PER | : PER | : PER | : PER
I | Minutes Since Last | : | : | : | : | :
N | SD Radar Search | : 00 | : | : | : | :
E | NUMBER | : 1 | : 1 | : 1 | : 1 | : 3
A | TYPE | : UNK | : DAVE | : DAVE | : DAVE | : UNK
I | PROBABLE MISSION | : PAT | : PAT | : PAT | : ESC | : H
R | HOW CONTACTED | : SIGHT | : SIGHT PER | : SIGHT PER | : SIGHT PER | : SIGHT
C | INITIAL RANGE | : 5 mi. | : 8 mi. | : 8 mi. | : 5 mi. | : 5 mi.
R | ELEVATION ANGLE | : 3° | : 4° | : 4° | : 4° | : 4°
A | Range and Relative | : | : | : | : | :
F | Bearing of Plane | : | : | : | : | :
T | When it detected | : ND | : ND | : ND | : ND | : ND
| S/M | : | : | : | : | :
C | Sea: (State (Beau- | : 2 | : Flat | : Flat | : Flat | : Flat
O | fort) | : | : calm | : calm | : calm | : calm
N | (Direction (Rel)): | : 225° | : | : | : | :
D | Visibility (Miles) | : 6 | : Unlimited | : Unlimited | : Unlimited | : Unlimited
I | (Height | : | : | : | : | :
T | Clouds: ( in Ft. | : 1000' | : None | : None | : None | : None
I | ( Percent | : | : | : | : | :
O | Overcast | : 6 | : 0 | : 0 | : 0 | : 0
N | Moon: (Bearing (Rel.) | : | : | : | : | :
S | (Angle | : | : | : | : | :
| (Percent | : | : | : | : | :
| Illum. | : | : | : | : | :

Type of S/M Camouflage on this patrol: light gray.
-21-

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CONFIDENTIAL                                        U.S.S. SEA DEVIL
                                                      (G) AIRCRAFT CONTACTS

CONTACT NUMBER                  :       6       :       7       :       8       :       9       :       10

S Date                          :       9-25    :       9-26    :       9-29    :       9-30    :       10-3
U                               :               :               :               :               :
B Time (Zone)                   :       1530 (-9) :       0747 (-9) :       2304 (-9) :       0942 (-9) :       0836 (-9)
M                               :               :               :               :               :
A Position: Lat.                :       33-56 N :       33-35 N :       33-39 N :       32-47 N :       34-39 N
R                               :               :               :               :               :
I           Long.               :       136-18 E :       138-10 E :       139-54 E :       139-21 E :       140-00 E
N                               :               :               :               :               :
E Speed                         :       2       :       2       :       16      :       18      :       2

                                :               :               :               :               :
  Course                        :       280°    :       090°    :       215°    :       240°    :       200°
                                :               :               :               :               :
  Trim                          :       PER     :       PER     :       SURF    :       SURF    :       PER
                                :               :               :               :               :
  Minutes Since Last            :               :               :               :               :
  SD Radar Search               :
  Number                        :       1       :       1       :       1       :       1       :       1
A                               :               :               :               :               :
I Type                          :       DAVE    :       LILY    :       UNK     :       VAL     :       SALLY
R                               :               :               :               :               :
C Probable Mission              :       ESC     :       PAT     :       ESC     :       H       :       PAT
R                               :               :               :               :               :
A How Contacted                 :       SIGHT PER :       SIGHT PER :       APR     :       SIGHT   :       SIGHT PER
F                               :               :               :               :               :
T Elevation Angle               :       5°      :       8°      :       UNK     :       4°      :       4°

                                :               :               :               :               :
  Initial Range                 :       4 mi.   :       2 mi.   :       UNK     :       8 mi.   :       1 mi.
                                :               :               :               :               :
  Range and Relative            :               :               :               :               :
  Bearing of Plane              :               :               :               :               :
  When It Detected              :               :               :               :               :
  S/M.                          :       ND      :       ND      :       UNK     :       8 mi. 220°:       ND

                                :               :               :               :               :
C Sea: (State (Beau-            :       3       :       4       :       1       :       1       :       4
O           fort)               :               :               :               :               :
N           (Direction          :       070°    :       070°    :       200°    :       200°    :       060°
D           (Relative           :               :               :               :               :
I Visibility (Miles)            :       10      :       10      :       10      :       Unlimited :       8
T Clouds: (Height in            :       1000    :       1000    :       1000    :       5000    :       1000
I           Ft.                 :               :               :               :               :
O           (Percent            :       80      :       80      :       20      :       20      :       100
N           Overcast            :               :               :               :               :
S           (Bearing (Rcl)      :               :               :       230°    :               :

                                :               :               :               :               :
  Moon: (Angle                  :               :               :       40°     :               :
                                :               :               :               :               :
        (Percent                :               :               :       100%    :               :
        Illum.                  :               :               :               :               :

Type of S/M Camouflage on this patrol: light grey.
                                                      -22-

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CONFIDENTIAL
U.S.S. SEA DEVIL
(G) AIRCRAFT CONTACTS

CONTACT NUMBER | 11 | 12 | 13 | 14
Date | : | 10-11 | : | 10-11 | : | 10-11 | : | 10-13
S Time (Zone) | : | 0910 (-9) | : | 0926 (-9) | : | 1655 (-9) | : | 0728 (-9)
U Position: Lat. | : | 34-36 N | : | 34-36.5 N | : | 34-41 N | : | 34-43 N
B | | | | | | | |
M Long. | : | 139-42 E | : | 139-42 E | : | 139-42 E | : | 139-41 E
A | | | | | | | |
R Speed | : | 2 | : | 2 | : | 2 | : | 2
I | | | | | | | |
N Course | : | 000° | : | 150° | : | 000° | : | 000°
E | | | | | | | |
Trim | : | PER | : | PER | : | PER | : | PER
Minutes Since Last | : | | : | | : | | : |
SD Radar Search |
Number | : | 1 | : | 1 | : | 1 | : | 6
A Type | : | SALLY | : | ZEKE | : | SALLY | : | SALLY
I | | | | | | | |
R Probable Mission | : | PAT | : | PAT | : | PAT | : | TRANS
C | | | | | | | |
R How Contacted | : | SIGHT PER | : | SIGHT PER | : | SIGHT PER | : | SIGHT PER
A | | | | | | | |
F Initial Range | : | 2 mi. | : | 3 mi. | : | 3 mi. | : | 8 mi.
T | | | | | | | |
Elevation Angle | : | 3° | : | 3° | : | 3° | : | 2°
Range and Relative | : | | : | | : | | : |
Bearing of Plane | : | | : | | : | | : |
When It Detected | : | | : | | : | | : |
S/M | : | ND | : | ND | : | ND | : | ND
| | | | | | | |
Sea: (State (Beau- | : | 3 | : | 3 | : | 1 | : | 2
C | fort) | | | | | | |
O (Direction | : | 010° | : | 010° | : | 170° | : | 010°
N (Relative) | | | | | | | |
D Visibility (Miles) | : | 10 | : | 10 | : | 20 | : | 8
I | | | | | | | |
Clouds: (Height in | : | 1000 | : | 1000 | : | 1000 | : | 1000
| (Ft. | | | | | | | |
| (Percent | : | 80% | : | 80% | : | 20% | : | 100%
| Overcast | | | | | | | |
| (Bearing | : | | : | | : | | : |
Moon: ( (Relative) | | | | | | | |
| (Angle | : | | : | | : | | : |
| (Percent | : | | : | | : | | : |
| Illum. | | | | | | | |
Type of S/M Camouflage on this patrol: light gray.
-23-

— page 32 —
CONFIDENTIAL
U.S.S. SEA DEVIL
(H) ATTACK DATA

U.S.S. SEA DEVIL
TORPEDO ATTACK No. 1
PATROL NUMBER 1
Time: 0545
September 16, 1944. Lat.34°-30'N Long.145°-23' E.

TARGET DATA - DAMAGE INFLICTED

Description: I5 - I8 type Japanese submarine (IC). Contact made by SJ radar at
range of 8340 yds. Visibility poor. No moon.

Ship sunk: 1 Japanese submarine of I5 - I8 class. Tonnage of 1900 tons.

Damage determined by: Two torpedo explosions checked with range of target. Huge
columns of brown smoke with no target in sight was seen one
minute after torpedo hits. Screws stopped immediately and
the usual breaking up noises were heard on the sound gear.
Several loud explosions, probably due to air bottles or
exploding torpedoes were also heard. A large oil slick
extended considerably around the scene of attack.

Target draft...15' Course...120°T. Speed...9.4 kts. Range...1800 yds.

ON SHIP DATA

Speed...3 kts. Course...200°T. Depth...65' Angle...0°

Type attack: Contact at range of 8340 yards by SJ radar. Put astern and tracked.
Dove on targets base course and made normal submerged periscope
approach. Used T.D.C. and longitudinal spread with offset handle.

-24-

— page 33 —
CONFIDENTIAL

U.S.S. SEA DEVIL
ATTACK No. 1

Tubes Fired             : #1      : #2      : #3      : #4      :
Track Angle             : 102° P  : 104° P  : 106° P  : 107° P  :
Gyro Angle              : 355°    : 352°    : 350°    : 348°    :
Depth Set               : 6'      : 6'      : 6'      : 6'      :
Power                   :         :         :         :         :
Hit or miss             : Miss    : Hit     : Hit     : Miss    :
Erratic (Yes or No)     : No      : No      : No      : No      :
Mk. Torpedo             : 18-2    : 18-2    : 18-2    : 13-2    :
Serial No.              : 54714   : 55486   : 54461   : 56133   :
Mark Exploder           : 6-4     : 6-4     : 6-4     : 6-4     :
Serial No.              : 9759    : 9567    : 9131    : 10172   :
Actuation set           : Contact : Contact : Contact : Contact :
Actuation actual        :         : Contact : Contact :         :
Mark Warhead            : 18-2    : 18-2    : 18-2    : 18-2    :
Serial No.              : 2421    : 2431    : 2016    : 2032    :
Explosives              : TPX     : TPX     : TPX     : TPX     :
Firing Interval         :         : 10 sec. : 10 sec. : 10 sec. :
Type spread             : Offset  : Offset  : Offset  : Offset  :
Sea conditions          : Force 2 : Force 2 : Force 2 : Force 2 :
Overhaul activity       : P. H.   : P. H.   : P. H.   : P. H.   :

-25-

— page 34 —
CONFIDENTIAL
U.S.S. SEA DEVIL

U.S.S. SEA DEVIL TORPEDO ATTACK No. 2 PATROL No. 1
Time: 1343 Date: September 22, 1944. Lat. 33°-29½' Long. 135°-29' E.

TARGET D.T.A. - DAMAGE INFLICTED

Description: Convoy of one 4000 ton A.K., one 1500 ton A.K., one CHIDORI type
torpedo boat: and one small escort. Contact first picked up by
CHIDORI pinging. Visibility excellent.

Ships sunk: None.

Ships damaged or probable sunk: None.

Damage determined by:

Target Draft - 6' Course 262°T. Speed - 10 kts. Range - 950 yards.

OWN SHIP D.T.A.

Speed - 2.2 kts. Course - 177°T. Depth - 63' Angle - 0°

FIRE CONTROL AND TORPEDO D.T.A.

Type Attack: Contacted first by bearing pinging and attack developed into normal
submerged periscope approach. Used T.D.C. and longitudinal spread
with offset handle.

-26-

— page 35 —
CONFIDENTI.L                                        U.S.S. SE. DEVIL
                                                    ATTACK No. 2

Tubes Fired                 : #1    : #2    : #3    : #4    :
Track Angle                 : 118° S : 123° S : 129° S : 134° S :
Gyro Angle                  : 017-30 : 026   : 035-30 : 043   :
Depth Set                   : 6'    : 6'    : 6'    : 6'    :
Power                       :       :       :       :       :
Hit or miss                 : miss  : miss  : miss  : miss  :
Erratic                     : No    : No    : No    : No    :
Mark Torpedo                : 18-2  : 18-2  : 18-2  : 18-2  :
Serial No.                  : 55828 : 55282 : 55293 : 55563 :
Mark Exploder               : 6-4   : 6-4   : 6-4   : 6-4   :
Serial No.                  : 8868  : 9233  : 9238  : 9261  :
Actuation Set               : Contact : Contact : Contact : Contact :
Actuation Actual            :       :       :       :       :
Mark Warhead                : 18-2  : 18-2  : 18-2  : 18-2  :
Serial No.                  : 1837  : 2642  : 2179  : 3073  :
Explosive                   : TPX   : TPX   : TPX   : TPX   :
Firing Interval             -       : 10 sec : 10 sec : 10 sec :
Type Spread                 : Offset : Offset : Offset : Offset :
Sea Conditions              : Force 3 : Force 3 : Force 3 : Force 3 :
Overhaul Activity           : P.H.  : P.H.  : P.H.  : P.H.  :

Remarks: All torpedoes probably ran under the target.

-27-

— page 36 —
CONFIDENTIL

U.S.S. SE.. DEVIL
U.S.S. SE.. DEVIL
Time: 0637
TORPEDO ATTACK No. 3
Patrol No. 1
Date: September 30, 1944 Lat. 32°-58' N. Long. 139°-32' E.
TORPEDO DATA - DAMAGE INFLICTED
Description: Convoy of one 4000 ton [UNCLEAR: AK]; one 1500 ton [UNCLEAR: AK]; one destroyer; and
:
one small escort. Contact first made by SJ radar at range of
20,000 yards on clear moonlight night of excellent visibility.
Ships sunk: None
Ships damaged or probably sunk: None.
Damage determined by:
Target Draft - 8'
Course - 155°T.
Speed - 13 kts.
Range - 2190 yds.
:
Speed - 3 kts.
Course 106° - 097°T.
OWN SHIP DATA
Depth - 65'.
Angle - 0°
FIRE CONTROL AND TORPEDO DATA
Type Attack: Initial contact at range of 20,000 yards by SJ radar. Made end
around for position which developed into normal submerged daylight
periscope approach. Used T.D.C. and longitudinal spread with off-
set handle.

-28-

— page 37 —
CONFIDENTIAL                                                U.S.S. SEA DEVIL

                                                            ATTACK No. 3

Tubes Fired                 : #3      : #4      : #5      : #6      :
Track Angle                 : 118°S   : 120°S   : 122°S   : 123°S   :
Gyro Angle                  : 344.5°  : 350°    : 351°    : 001°    :
Depth Set                   : 4'      : 4'      : 4'      : 4'      :
Power                       :         :         :         :         :
Hit or Miss                 : Miss    : Miss    : Miss    : Miss    :
Erratic (Yes or No)         : No      : No      : No      : No      :
Mark Torpedo                : 18-2    : 18-2    : 18-2    : 18-2    :
Serial No.                  : 56212   : 55714   : 55905   : 56074   :
Mark Exploder               : 6-4     : 6-4     : 6-4     : 6-4     :
Serial No.                  : 9120    : 9086    : 9584    : 8911    :
Actuation Set               : Contact : Contact : Contact : Contact :
Actuation Actual            :         :         :         :         :
Mark Warhead                : 18-2    : 18-2    : 18-2    : 18-2    :
Serial No.                  : 2470    : 3095    : 2068    : 3014    :
Explosive                   : TPX     : TPX     : TPX     : TPX     :
Firing Interval             :         : 10 sec. : 10 sec. : 10 sec. :
Type Spread                 : Offset  : Offset  : Offset  : Offset  :
Sea Conditions              : Force 3 : Force 3 : Force 3 : Force 3 :
Overhaul Activity           : P.H.    : P.H.    : P.H.    : P.H.    :

                                                            -29-

— page 38 —
CONFIDENTIAL
U.S.S. SEA DEVIL
U.S.S. SEA DEVIL
TORPEDO ATTACK No. 4
Patrol No. 1
Time: 1242
Date: October 16, 1944 Lat. 34°-43' N. Long. 139°-48' E.

TARGET DATA - DAMAGE INFLICTED

Description: 1500 ton AK or "Q" ship, identified as ISSIN MARU or similar type.
Contact first picked up by target pinging. Visibility good.

Ship sunk: None.

Ship Damaged or Probably Sunk: None.

Damage determined by:

Target draft - 7' Course - 323°T. Speed - 8.3 kts. Range - 1930 yd.

OWN SHIP DATA

Speed - 2.6 kts. Course - 042°T. Depth - 63' Angle - 0°

FIRE CONTROL AND TORPEDO DATA

Type attack: Initially contacted by hearing target pinging on JK sound gear. At-
tack developed into normal submerged periscope approach. Used T.D.C.
and spread by continuous periscope bearing method.

-30-

— page 39 —
CONFIDENTIAL                                                U.S.S. SEA DEVIL

                                                                ATTACK No. 4

Tubes Fired                                 : #1      : #2      : #3      :
Track Angle                                 : 106°P   : 110°P   : 111°P   :
Gyro Angle                                  : 354°    : 351°    : 351°    :
Depth set                                   : 2'      : 2'      : 2'      :
Power                                       :         :         :         :
Hit or Miss                                 : Miss    : Miss    : Miss    :
Erratic (Yes or No)                         : No      : No      : No      :
Mark Torpedo                                : 18-2    : 18-2    : 18-2    :
Serial No.                                  : 55910   : 56201   : 55487   :
Mark Exploder                               : 6-4     : 6-4     : 6-4     :
Serial No.                                  : 8785    : 8755    : 9762    :
Actuation Set                               : Contact : Contact : Contact :
Actuation Actual                            :         :         :         :
Mark Warhead                                : 18-2    : 18-2    : 18-2    :
Serial No.                                  : 2356    : 3067    : 2668    :
Explosive                                   : TPX     : TPX     : TPX     :
Firing Interval                             :         : 10 sec. : 10 sec. :
Type Spread                                 : Periscope : Periscope : Periscope :
Sea Conditions                              : Force 3 : Force 3 : Force 3 :
Overhaul Activity.                          : P.H.    : P.H.    : P.H.    :

                                                                -31-

— page 44 —
CONFIDENTIAL                                U.S.S. SEA DEVIL

Subject:         Report of FIRST War Patrol.

— page 50 —
SUBMARINE DIVISION TWO HUNDRED TWENTY-ONE

FB5-221/A16-3
Serial: (051)

FIRST ENDORSEMENT to
C.O., U.S.S. SEA DEVIL,
Report of First War Patrol.

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

Subject: U.S.S. SEA DEVIL (SS400), Report of First War Patrol.

1. The first patrol of the U.S.S. SEA DEVIL was of 53 days dur-
ation. Thirty days were spent in the Empire areas south of Tokyo.

2. Area coverage was good despite stormy weather and fog.

3. Four contacts worthy of torpedo fire were made in the area
and one on the way to the area. One was lost in fog. Four torpedo attacks
were made as follows:

(a) Attack number one on 16 September 1944: A daylight peri-
scope attack was made following a night radar contact on an I-5-8 class
Japanese submarine. Four torpedoes were fired. Two hits were heard and a
pall of smoke and a large oil slick were observed.
Recommended assessment:

1 - I-5-8 class submarine (EC) 2,000 tons.

(b) Attack number two on 22 September 1944: Four torpedoes
were fired from a good position at a DD or Chidori class patrol vessel. Tor-
pedoes were set on 6 feet. No hits were obtained. This was probably due to
torpedoes under-running target or control errors or both.

(c) Attack number three on 30 September 1944: Four torpedoes
were fired at a DD acting as escort for a convoy from a fair position. The
range was 2190 yards which probably accounts for the miss. Plane coverage
forced the SEA DEVIL to remain submerged for the remainder of the day while
the convoy escaped.

(d) Attack number four on 16 October 1944: Three torpedoes
were fired at a small freighter probably acting as an anti-submarine vessel
from a fair position. The range was 1930 yards which may account for the
miss.

- 1 - Care of Fleet Post Office
San Francisco, California
26 October 1944

— page 51 —
SUBMARINE DIVISION TWO HUNDRED TWENTY-ONE

FB5-221/A16-3
Serial: (051)

FIRST ENDORSEMENT to
C.O., U.S.S. SEA DEVIL,
Report of First War Patrol.

Subject: U.S.S. SEA DEVIL (SS400), Report of First War Patrol.

— page 52 —
FC5-22/A16-3
Serial: 061
CONFIDENTIAL

SECOND ENDORSEMENT to
USS SEA DEVIL report of
First War Patrol.

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

Subject: U.S.S. SEA DEVIL (SS400) - First War Patrol, comments on.

1. Forwarded, concurring in the comments of the Commander Sub-
marine Division TWO HUNDRED TWENTY-ONE.

2. The excellent results obtained with the new five-foot hydro-
phone of the JP-2 equipment are noted.

3. SEA DEVIL is equipped with the new type Dutch hatches. They
proved entirely satisfactory although SEA DEVIL was not subjected to close
depth charge attack.

4. It is a pleasure to congratulate the Commanding Officer,
officers and men upon the damage inflicted on the enemy in this first
patrol and it is recommended that SEA DEVIL be credited with the following:

SUNK

1 -- I 5-8 Class Submarine (EC) 2,000 tons.

Copy to:
Comsubdiv 221
CO SEA DEVIL
SUBMARINE SQUADRON TWENTY-TWO
ck
Fleet Post Office,
San Francisco, California,
27 October 1944.

W.J. SUITS.

— page 53 —
[HANDWRITTEN: 2ND Copy]

FF12-10/A16-3(15) SUBMARINE FORCE, PACIFIC FLEET hch
[STAMP: RECEIVED S-C FILES]
Serial 02529 [HANDWRITTEN: 23] Room 2055 Care of Fleet Post Office,
[STAMP: ROUTE TO 22 NOV 1944] San Francisco, California,
CONFIDENTIAL [STAMP: On File No. (ou) 143766] 13 November 1944.
[HANDWRITTEN: 3-3/23] /SS 400
THIRD ENDORSEMENT to NOTE: THIS REPORT WILL BE
SEA DEVIL Report of DESTROYED PRIOR TO
First War Patrol. ENTERING PATROL AREA.

COMSUBSPAC PATROL REPORT NO. 566.
U.S.S. SEA DEVIL - 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. SEA DEVIL (SS400) - Report of First War Patrol.
(3 September to 25 October 1944).

1. The first war patrol of the SEA DEVIL was conducted in
the areas south of Tokyo.

2. On her first war patrol the SEA DEVIL maintained good
area coverage despite typhoon weather and the intense enemy anti-sub-
marine measures always found in this area. Four aggressive attacks
were made, three of which were unsuccessful, but in the successful
attack the SEA DEVIL had the pleasure of destroying a Japanese sub-
marine.

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

4. The Commander Submarine Force, Pacific Fleet, congratu-
lates the commanding officer, officers, and crew for this successful
first patrol and the sinking of a Japanese submarine, the loss of
which the enemy can ill afford. The SEA DEVIL is credited with having
inflicted the following damage upon the enemy during this patrol:

S U N K

1 - SS (I-5-8 Class) (EC) - 1,900 tons (Attack No. 1)

[STAMP: Office of the Chief of Naval Operations]
[STAMP: FLEET MAINTENANCE]
[HANDWRITTEN: 14] [STAMP: 28 NOV 1944] [SIGNATURE: C. A. LOCKWOOD, Jr.]
[STAMP: RECEIVED]
[STAMP: NAVY DEPARTMENT]

Distribution and authenti-
cation on following page.

- 1 -

— page 54 —
SUBMARINE FORCE, PACIFIC FLEET
FF12-10/A16-3(15)
Serial 02529
CONFIDENTIAL
THIRD ENDORSEMENT to
SEA DEVIL Report of
First War Patrol.
COMSUBSPAC PATROL REPORT NO. 566.
U.S.S. SEA DEVIL - FIRST WAR PATROL.
hch
Care of Fleet Post Office,
San Francisco, California,
13 November 1944.
NOTE: THIS REPORT WILL BE
DESTROYED PRIOR TO
ENTERING PATROL AREA.
Subject:
U.S.S. SEA DEVIL (SS400) - Report of First War Patrol.
(3 September to 25 October 1944).
DISTRIBUTION:
(Complete Reports)
Cominch
CNO
Cincpac
(7)
(5)
(6)
Intel.Cen. Pac. Ocean Areas (1)
Comservpac
(1)
Cinclant
(1)
Comsubslant
(8)
S/M School, NL
(2)
CO, S/M Base, PH
(1)
Comsopac
(2)
Comsowespac
(1)
Comsubsowespac
(2)
CTF 72
(2)
Comnorpac
(1)
Comsubspac
(40)
SUBAD, MI
(2)
ComsubspacSubordcom
All Squadron and Division
Commanders, Pacific
SubsTrainPac
All Submarines, Pacific
[SIGNATURE: E. L. Hynes 2nd]
E. L. HYNES, 2nd,
Flag Secretary.
:
(3)
(2)
(2)
(1)

— page 55 —
SS400/A16-3
Serial: (1)
C-O-DECLASSIFIED

From:
To :
Via :

Subject:

Enclosure:

1.
conducted in the Nansei Shoto area, during the period 19 November 1944 to
11 January 1945, is forwarded herewith.

[HANDWRITTEN: FILMED]
[HANDWRITTEN: 120286] U.S.S. SEA DEVIL (SS400)
Care of Fleet Post Office,
San Francisco, California.
[STAMP: DECLASSIFIED ARD 045, OPNAVINST 5510.1C]
BY [HANDWRITTEN: CPO9RH] DATE [HANDWRITTEN: 6/13/12]

The Commanding Officer, U.S.S. SEA DEVIL (SS400).
The Commander-in-Chief, United States Fleet.
(1) The Commander Submarine Division T O EIGHTY-ONE.
(2) The Commander Submarine Squadron TWENTY-EIGHT.
(3) The Commander Submarine Force, Pacific Fleet.
(4) The Commander-in-Chief, U.S. Pacific Fleet.

U.S.S. SEA DEVIL (SS400), Report of Second War Patrol.

(A) Subject Report.
(B) Track Chart (ComSubPac only)
(C) Additional Data Forms (ComSubPac only)

Enclosure (A), covering the second war patrol of this vessel

R. E. STYLES.

— page 59 —
C-O-N-F-I-D-E-N-T-I-A-L

U.S.S. SEA DEVIL (SS400) - Report of Second War Patrol.
0240
Took a tremendous wave over the bridge, knocking the starboard
lookout off the periscope sheers onto the bridge deck. He
received a severe laceration over the left eye and the prob-
ability of a few cracked ribs. The main induction was com-
pletely flooded, causing both engine rooms to flood to the
lower deck plates. Water came through the supply line into
the after battery compartment, crews mess, radio shack, and
control room. A solid stream came into the control room via
the conning tower. Quick thinking and excellent work on the
part of the officers and crew below decks prevented any damage
other than numerous grounds, among which was full voltage
ground on after battery.
0320
In position, 12,000 yards ahead and 3000 yards off the port
track. Could see targets plainly from the bridge and was
amazed to see that we had a convoy of very large freighters
and tankers. Radar had eleven targets and there were probably
more. Weather and visibility precluded a night surface attack.
0322
OOD sighted spherical-shaped object, a probably floating mine,
100 yards off the port bow. Swung right with full rudder and
avoided.
0332
Dived and commenced approach, heading for the port flank of
convoy.
0345
Came up to radar depth for a sweep and immediately broached
so decided to track by bearings alone and a single ping range
before firing.
0400
Moon clouded over and it became progressively worse to see
through the periscope. We were right in the middle of the
convoy. It is necessary to make standard speed and run at
60 feet in order to maintain depth and occasionally see over
waves.
0413
Escort passed close aboard about 300 yards, pinging. Sound
conditions are poor.
0414
Commenced firing four MK 18-2 torpedoes from the bow tubes
at a medium size freighter. Range 1000 yards, track 110°
port, gyros 344° 335°, depth set 10 feet. All missed.
(ATTACK #1)
0424:10
Commenced firing #5 and #6 tubes at a very large tanker.
Range 600 yards, track 105° port, gyros 336° and 333°, depth
set 10 feet. (ATTACK #2)

-4-

— page 62 —
C-O-N-F-I-D-E-N-T-I-A-L
U.S.S. SEA DEVIL (SS400) - Report of Second War Patrol.
6 December 1944.
0410
Lifeguard duty delayed one day.
0620
Dived.
1413
Seas picking up again with low visibility. Surfaced to
increase radius of search.
1525
Dived.
1810
Surfaced.
7 December 1944.
0355
Lifeguard duty cancelled. Set course for patrol area.
0620
Dived.
1824
Surfaced.
1945
Radar interference on SJ at 150° T.
1950
Exchanged calls with U.S.S. PLAICE. (S.C. #8)
2050
SJ radar contact, 5200 yards, bearing 017° T. Put astern
and pip faded out at 7000 yards. Indicative of small patrol
boat or sampan. (S.C. #9)
8 December 1944.
0339
SJ contact, 10,650 yards, bearing 058° T with strong radar
interference. Exchanged calls again with U.S.S. PLAICE.
(s.c. 10)
0530
SJ contact, 7000 yards, bearing 330° T with strong radar
interference. Exchanged calls with U.S.S. SUNFISH. (S.C. #11)
0601
Dived. Heard very distant explosions throughout the morning.
1834
Surfaced.
1835
Radar interference on SJ at 320° T.
1846
Exchanged calls with U.S.S. REDFISH. (S.C. #12)
1910
Had very unusual interference on SJ that was entirely uncommon
to any 10 cm. rader interference in our experience. (See
Radar section)

-7-

— page 73 —
C-O-N-F-I-D-E-N-T-I-A-L

U.S.S. SEA DEVIL (SS400) - Report of Second War Patrol.

F. SHIP CONTACTS
No. : Time & : Lat & : Type : Initial : Est. C. : How : Remarks
: Date : Long. : : Range : Speed : Contacted :
1. : 22 Nov : 0000(L): 19-40N : U.S. Submarine : 14,000 yds : 15 knots : SJ Radar : Identified as SEA FOX by SJ
: 0000(K): 29-32N : : : : : : recognition.
2. : 27 Nov : 0845(I): 29-40E : U.S. Submarine : 9,300 yds : 03 knots : SJ Radar : Identified as POGY by AIR contact
: 145-26N : : : : : : on SD and schedule.
3. : 29 Nov : 2351(I): 30-40N : patrol boat : 20,000 yds : 8 knots : ? (High) : Avoided.
: 135-51N : : : : :
4. : 1 Dec : 2020(I): 31-48E : U.S. Submarine : Interference: 23 knots : SJ Radar : Identified as PLAICE by SJ
: 128-51N : : : : : : recognition.
5. : 1 Dec : 2020(I): 31-20N : Convoy : 39,500 yds : 8 knots : SJ Radar : Developed into Attack
: 128-45E : : : : : : #1, #2, #3
6. : 2 Dec : 0643(I): 32-50E : U.S. Submarine : 11,400 yds : 9 knots : SJ Radar : Identified as PLAICE by SJ
: 128-58N : : : : : : recognition.
7. : 5 Dec : 1945(I): 32-54E : Two Trawlers : 20,000 yds : Trawling : JP-2 : Avoided.
: 126-25N : : : : :
8. : 7 Dec : 2050(I): 32-14N : U.S. Submarine : Interference: 160 : SJ Radar : Identified as PLAICE by SJ
: 128-28E : : : : : : recognition.
9. : 7 Dec : 0339(I): 31-37E : Sampan or : 5,200 yds : 9 knots : SJ Radar : Avoided.
: 128-27N : Patrol Boat : : : :
10. : 8 Dec : 0530(I): 31-29E : U.S. Submarine : 10,650 yds : : SJ Radar : Identified as PLAICE by SJ
: 128-37N : : : : : : recognition.
11. : 8 Dec : 1846(I): 31-00E : U.S. Submarine : 7,000 yds : : SJ Radar : Identified as SUNFISH by SJ
: 128-40N : : : : : : recognition.
12. : 8 Dec : 2130(I): 31-37N : U.S. Submarine : Interference: 04 knots : SJ Radar : Identified as REDFISH by SJ
: 127-44E : : : : : : recognition.
13. : 8 Dec : 0153(I): 31-14E : Task Force : 33,000 yds : 19-120 knots : SJ Radar : Developed into Attack #4
: 128-09N : : : : : : Identified as SEA POACHER by SJ
: : : : : : : recognition.
14. : 9 Dec : 0505(I): 31-09N : U.S. Submarine : Interference: : SJ Radar : Identified as PIRANHA by SJ
: 128-56E : : : : : : recognition.
15. : 9 Dec : 1837(I): 30-44E : U.S. Submarine : Interference: : SJ Radar : Identified as PLAICE by SJ
: 128-45N : : : : : : recognition.
16. : 9 Dec : 128-40E : U.S. Submarine : Interference: : SJ Radar : recognition.
: 30-40N :

-18-

— page 75 —
C-O-N-F-I-D-E-N-T-I-A-L

U.S.S. SEA DEVIL (SS400) - Report of Second War Patrol.

G. AIRCRAFT CONTACTS.
CONTACT NUMBER                 : 1     : 2     : 3     : 4     : 5     : 6     : 7     : 8
                               :       :       :       :       :       :       :       :
Date                           : 27 Nov.:30 Nov.:10 Dec.:10 Dec.:11 Dec.:21 Dec.:21 Dec.:
S Time (Zone)                  : 1530(K):1414(I):1224(I):1429(I):1224(I):0813(I):1358(I):
U Position: Lat.               : 29-35N :29-30N :29-44N :29-44N :29-32N :26-30-N:26-27N :
B           Long.              : 141-45E:131-10E:127-30E:127-30E:128-08E:127-37E:127-40E:
M                              :       :       :       :       :       :       :       :
R Speed                        : 12    : 2.2   : 10    : 4     : 5     : 2     : 2     :
I                              :       :       :       :       :       :       :       :
N Course                       : 270   : 255   : 020   : 180   : 230   : 140   : 150   :
E                              :       :       :       :       :       :       :       :
Trim                           : Surf. : Per.  : Surf. : Surf. : Surf. : Per.  : Per.  :
Minutes Since Last             :       :       :       :       :       :       :       :
SD Radar Search                : 0     : 0     : 0     : 0     : 0     : 0     : 0     :
                               :       :       :       :       :       :       :       :
Number                         : 1 or 2: 1     : 1     : 1     : 1     : 1     : 8     :
                               :       :       :       :       :       :       :       :
A Type                         : B29 ? : Emily : Bomber: Dave  : Emily : ?     : ?     :
I                              :       :       :       :       :       :       :       :
R Probable Mission             : Bomb. : Patrol: Patrol: Patrol: Patrol: Patrol:Training:
C                              :       :       :       :       :       :       :       :
R How Contacted                : Sight-R: Per.  : Sight : Sight : Sight : Sight : Sight :
A                              :       :       :       :       :       :       :       :
F Initial Range                : 10 M  : 10 M  : 8 M   : 10 M  : 8 M   : 4 M   : 3 M   :
T                              :       :       :       :       :       :       :       :
Elevation Angle                : 40°   : 3°    : 3°    : 1°    : 1°    : 5°    : 20°   :
Range & Relative               :       :       :       :       :       :       :       :
Bearing of Plane               :       :       :       :       :       :       :       :
When Detected                  :       :       :       :       :       :       :       :
S/M                            : ND    : ND    : ND    : ND    : ND    : ND    : ND    :
        (State (Beau-         :       :       :       :       :       :       :       :
C Sea: (        fort)          : 3     : 2     : 3     : 3     : 2     : 3     : 3     :
O                              :       :       :       :       :       :       :       :
N       (Direction(Rel)        : 250   : 090   : 030   : 200   : 270   : 270   : 260   :
D                              :       :       :       :       :       :       :       :
I Visibility (Miles)           : 15    : 15    : 15    : 15    : 30    : 10    : 10    :
T                              :       :       :       :       :       :       :       :
I Clouds: (Height in           :       :       :       :       :       :       :       :
O          Ft.                 : 1500  : 3000  : 6000  : 6000  : 20000 : 6000  : 20000 :
N                              :       :       :       :       :       :       :       :
S          (Percent            :       :       :       :       :       :       :       :
           Overcast            : 50    : 80    : 70    : 70    : 10    : 40    : 10    :
                               :       :       :       :       :       :       :       :
           (Bearing(Rel)       :       :       :       :       :       :       :       :
Moon: (Angle                   :       :       :       :       :       :       :       :
           (Percent            :       :       :       :       :       :       :       :
           Illum.              :
Type of S/M Camouflage on this patrol Lt. Gray .

- 20 -

— page 76 —
C-O-N-F-I-D-E-N-T-I-A-L

U.S.S. SEA DEVIL (SS400) - Report of Second War Patrol.

G. AIRCRAFT CONTACTS.
CONTACT NUMBER | : 8 | : 9 | : 10 :
|---|---|---
Date | : 28 Dec. | : 28 Dec. | : 29 Dec. :
S. Time (Zone) | : 1508(I) | : 1542(I) | : 1309(I) :
U Position: Lat. | : 27-02N | : 27-02N | : 28-25N :
M Long. | : 128-54E | : 128-55E | : 131-13E :
A Speed | : 2 | : 2 | : 14 :
R Course | : 110 | : 030 | : 030 :
I Trim | : Per. | : Per. | : Surf. :
N Minutes Since Last: | : | : | : :
E SD Radar Search | : 0 | : 0 | : 0 :
|---|---|---
Number | : 2 | : 1 | : 1 :
A Type | : ? | : ? | : ? :
I Probable Mission | : Patrol | : Patrol | : Patrol :
R How Contacted | : Sight | : Sight | : Sight :
A Initial Range | : 12 M | : 5 M | : 8 M :
F Elevation Angle | : 2° | : 2° | : 2° :
T Range & Relative | : | : | : :
  Bearing of Plane | : | : | : :
  When It Detected | : | : | : :
  S/M | : ND | : ND | : ND :
|---|---|---
C Sea: (State (Beau- | : 2 | : 2 | : 3 :
O fort) | : | : | : :
N (Direction (Rel) | : 200 | : 200 | : 300 :
D Visibility Miles | : 15 | : 10 | : 10 :
I (Height in | : | : | : :
T Clouds: (Ft. | : 6000 | : 6000 | : 3000 :
I (Percent | : | : | : :
O Overcast | : 70 | : 70 | : 80 :
N (Bearing (Rel) | : | : | : :
S Moon: (Angle | : | : | : :
  (Percent | : | : | : :
  Illum. | : | : | : :

Type of S/M Camouflage on this patrol Lt. Gray

- 21 -

— page 79 —
C-O-N-F-I-D-E-N-T-I-A-L
U.S.S. SEA DEVIL (SS400) - Report of Second War Patrol.
H. ATTACK DATA. (Continued)
U.S.S. SEA DEVIL
Time: 0424(I)
Torpedo Attack No. 2
Date: 2 December 1944
Patrol. No. 2
Lat. 30° 51' N Long. 128° 45' E
Target Data - Damage Inflicted
Description:
At least a seven ship convoy with four or more unknown-
type escorts. Contact made by SJ radar at range of
39,500 yards. Visibility from poor to very good.
(dependent on obscurity of moon).
Ships Sunk:
One large tanker, estimated 10,000 tons.
Ships Damaged or
Probably Sunk:
None.
Damage Determined by: Two timed hits. Observed torpedo hits through periscope
and saw water engulfing deck of target, listing and
sinking rapidly.
Target Draft: Unknown
Course: 230°T Speed: 8 knots
Range: 620 yds.
Own Ship Data
Speed: 4 knots
Course: 328°T
Depth: 60 feet Angle: 2° down
Fire Control and Torpedo Data
Type Attack:
Contacted first by SJ radar. Tracked and dived ahead
of convoy for normal night periscope submerged approach.
Used T.D.C. and spread by "continuous bearing method"
with periscope.

- 24-

— page 84 —
C-O-N-F-I-D-E-N-T-I-A-L
U.S.S. SEA DEVIL (SS400) - Report of Second War Patrol.

H. ATTACK DATA. (Continued)
U.S.S. SEA DEVIL
Torpedo Attack No. 4
Patrol No. 2 (Continued)
Tubes Fired: | #7 | #8 | #9 | #10
Track Angle | 110S | 112S | 115S | 117s
Gyro Angle | 179 | 181 | 182°30' | 183
Depth Set | 6' | 6' | 6' | 6'
Power | | Single Power Torpedoes | |
Hit or Miss | Miss | Hit | Hit | Miss (?)
Erratic (Yes or No) | No | No | No | No
Mark Torpedo | 23 | 23 | 23 | 23
Serial No. | 49986 | 6195 | 63164 | 63042
Mark Exploder | 6-4 | .6-4 | 6-4 | 6-4
Serial No. | 19553 | 19552 | 19536 | 19533
Actuation Set | Contact | Contact | Contact | Contact
Actuation Actual | | Contact | Contact |
Mark Warhead | 16-1 | 16-1 | 16-1 | 16-1
Serial No. | 9376 | 14134 | 1226 | 2643
Explosive | Torpex | Torpex | Torpex | Torpex
Firing Interval | | 10 sec. | 10 sec. | 10 sec.
Type Spread | Offset | Offset | Offset | Offset
Sea Conditions | | Force 3 | |
Overhaul Activity | | U.S.S. HOWARD W. GILMORE | |

- 29 -

— page 95 —
C-O-N-F-I -N-T-I-A-L
U.S.S. SEA DEVIL (SS400) - Report of Second War Patrol.

U. REMARKS.

The convoy encountered on 2 December was following the limits of the
mine field in the extreme western edge of HARU MORGUE. The possibility
that this was a traffic route was believed to exist and a week was spent
in this vicinity without any further contacts.
The attack on 9 December was conducted similar to a procedure followed
on some of our rehearsal radar runs conducted during daylight. After the
target had been tracked and speed determined, we went to radar depth ahead
of target group when range became less than 10,000 yards. The target was
tracked by radar until a range of around four thousand yards, at which time
we went to periscope depth and tracked by Sound using Case XI in H.O. 217
by which target course and range can be determined by Sound bearings when
the speed is known. If feasable, a quick check at radar depth is made just
before firing. If not, we have found that our Sound bearing solution has
been very accurate and have used sound bearings as final bearings. In this
attack we came to radar depth for a check and found that our Sound solution
had been correct.

Mark 18-2 Report

Sixteen MK 18-2 torpedoes were carried in the forward room on this
patrol. Six were fired, resulting in two hits. Their upkeep was excellent
and there were no difficulties encountered throughout the patrol.

-38-

— page 96 —
FB5-44/A16-3
Serial 08
C-O-N-F-I-D-E-N-T-I-A-L
FIRST ENDORSEMENT to
U.S.S. SEA DEVIL
Second War Patrol.
SUBMARINE DIVISION FORTY-FOUR
L
Care of Fleet Post Office,
San Francisco, California,
13 January 1945
The Commander Submarine Division FORTY-FOUR.
From:
To
Via:
:
The Commander-in-Chief, United States Fleet.
(1)
The Commander Submarine Squadron FOUR.
(2)
The Commander Submarine Force, Pacific Fleet.
(3)
The Commander-in-Chief, U.S. Pacific Fleet.
Subject:
U.S.3. SEA DEVIL (SS 400) Second War Patrol, comments on.
1.
The second war patrol of the SEA DEVIL was conducted in the North
China, Yellow Sea and the Nansei Shoto Areas. The patrol was of 54 days dura-
tion.
2.
The SEA DEVIL made but two contacts worthy of torpedo fire and
both of these were aggressively and successfully attacked. A summary of torpedo
attacks follows:
3.
TORPEDO ATTACK No. 12 December 1944
This attack was made a-
gainst a seven-ship convoy with four or more escorts. This was a night radar
periscope attack. The SEA DEVIL obtained a most favorable firing position in
the middle of the convoy and fired first at a medium sized freighter. With a
range of 1000 yards, depth setting at ten feet, four Mark XVIII torpedoes were
fired and for some unknown reason all missed.
TORPEDO ATTACK No. 22 December 1944 Ten minutes later the
remaining two torpedoes in the forward tubes were fired at a large enemy tanker
from a range of 600 yards. Two good hits were observed and this tanker was
seen to commence sinking shortly afterward.
TORPEDO ATTACK No. 3-2 December 1944 Five minutes later the
four stern tube torpedoes were fired at a large AK from a range of 1300 yards.
Shortly after firing the SEA DEVIL had to go deep to avoid being rammed by an-
other large freighter. A torpedo hit was heard, accompanied by a tremendous
explosion which was heard throughout the ship and subsequently debris was heard
falling all around the submarine indicating that this large freighter was proba-
bly an ammunition ship and that it blew up when hit.
TORPEDO ATTACK No. 4
periscope attack on an enemy Task Force consisting of three or four large tar-
9 December 1944 This was a night-radar-
gets plus three or four smaller ones.
targets as a large carrier and a battleship. The SEA DEVIL was able to obtain
The REDFISH later identified two of the
a favorable firing position on the largest of the targets, which is presumed to
have been the carrier. Four Mark XXIII torpedoes were fired from the stern tubes.
Two explosions were heard at the time followed by a subsequent one which may
have been a hit in another target but which is not claimed by the SEA DEVIL.
-1-

— page 97 —
FB5-44/A16-3

Serial 08

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

Subject: U.S.S. SEA DEVIL (SS 400) Second War Patrol, comments on.

— page 98 —
SUBMARINE SQUADRON FOUR
Fleet Post Office
San Francisco, California 11/jfs

FC5-4/A16-3 16 January 1945.

Serial: 047

C O N F I D E N T I A L
SECOND ENDORSEMENT to
USS SEA DEVIL (SS400) Re-
port of Second War Patrol.

From: The Commander Submarine Squadron FOUR.
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. SEA DEVIL (SS400) - Report of Second
War Patrol.

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

2. The Commander Submarine Squadron FOUR congrat-
ulates the Commanding Officer, officers and crew of the U.S.S.
SEA DEVIL upon completion of a very aggressive patrol, result-
ing in heavy damage being inflicted upon the enemy.

3. It is recommended that the U.S.S. SEA DEVIL
be credited with the following:

SUNK | DAMAGED
---|---
1 - AO(EU); 10,000 tons | 1 - Capital Man-of-War(UN)
1 - AK(EU); 7,500 tons |
Total Sunk 17,500 tons |

Total Sunk or Damaged - 17,500 tons, plus
1 Capital Man-of-War.

[SIGNATURE: W. V. O'Regan]
W. V. O'REGAN.

— page 99 —
-10/A16-3(15) SUBMARINE FORCE, PACIFIC FLEET
Serial 0216
CONFIDENTIAL
THIRD ENDORSEMENT to
SEA DEVIL Report of
Second War Patrol.

COMSUBSPAC PATROL REPORT NO. 644
U.S.S. SEA DEVIL - 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. SEA DEVIL (SS400) - Report of Second War Patrol
(19 November, 1944, to 11 January, 1945).

1. The second war patrol of the SEA DEVIL, under the com-
mand of Commander R. E. Styles, U.S. Navy, was conducted in the Nansei
Shoto - North China Sea - Yellow Sea Areas.

2. Only two contacts worthy of torpedo fire were made
despite excellent and thorough area coverage. One contact was a
large convoy and the other a task force of combatant ships. Three
aggressive and determined attacks under adverse conditions were de-
livered on the convoy. One large tanker was sunk and a large AK
estimated to have been sunk. A night attack on the task force re-
sulted in two hits in a large carrier which was subsequently identi-
fied as a carrier and attacked by the U.S.S. REDFISH (SS395).

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

4. The Commander Submarine Force, Pacific Fleet, congra-
tulates the commanding officer, officers, and crew for this aggres-
sive and successful patrol. The SEA DEVIL is credited with having
inflicted the following damage upon the enemy during this patrol:

S U N K
1 - Large AO (EU) - 10,000 tons (Attack No. 2)
1 - Large AK (EU) - 7,500 tons (Attack No. 3)
TOTAL SUNK 17,500 tons

D A M A G E D
1*- CV (SHOKAKU or HAYATAKA Type)(EC)- *29,800 tons (Attack No. 4)
TOTAL SUNK & DAMAGED 47,300 tons

*This CV also damaged by the REDFISH on her second war patrol.

Authentication and distribution C. A. LOCKWOOD, Jr.
on following page.
- 1 -

Care of Fleet Post Office,
San Francisco, California,
24 January 1945.
NOTE: THIS REPORT WILL BE
DESTROYED PRIOR TO
ENTERING PATROL AREA.

— page 100 —
FF12-10/A16-3(15) SUBMARINE FORCE, PACIFIC FLEET
Serial 0216-314

CONFIDENTIAL

THIRD ENDORSEMENT to
SEA DEVIL Report of
Second War Patrol.

COMSUBSPAC PATROL REPORT NO. 644
U.S.S. SEA DEVIL - SECOND WAR PATROL.

Subject: U.S.S. SEA DEVIL (SS400) - Report of Second War Patrol
(19 November, 1944, to 11 January, 1945).

DISTRIBUTION:
(Complete Reports)
Cominch (7)
CNO (5)
Cincpac (6)
ICPOA (1)
Comservpac (1)
Cinclant (1)
Comsublant (8)
S/M School, NL (2)
CO, S/M Base, PH (1)
Comsopac (2)
Comsowespac (2)
Comsubsowespac (2)
CTG 71.9 (1)
Comnorpac (1)
Comsubspac (40)
SUB.D, MI (2)
ComsubspacSubordcom (3)
All Squadron and Div. (2)
Commanders, Pacific
Substrainpac (2)
All Submarines, Pacific (1)

[SIGNATURE: E. L. Hynes 2nd]
E. L. HYNES, 2nd,
Flag Secretary.

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

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

— page 101 —
12-10(A)/A16-3(18) SUBMARINE FORCE, PACIFIC FLEET
Serial 084 Care of Fleet Post Office,
San Francisco, California,
CONFIDENTIAL [HANDWRITTEN: 644] 1 Feb 1945.

NOTE: THIS LETTER 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: U.S.S. SEA DEVIL (SS400) - Report of Second War Patrol,
Additional Damage to the Enemy.
Reference: (a) ComSubPac Report No. 644 - Third Endorsement to C.O.,
U.S.S. SEA DEVIL, SS400/A16-3, Serial (1), Report of
Second War Patrol, dated January 1944.

1. As a result of further study and detailed discussion of
Torpedo Attack No. 4 with the Commanding Officer of the SEA DEVIL, the
following additional damage to the enemy is estimated to have been in-
flicted, and it is requested that reference (a) be corrected accord-
ingly:

D A M A G E D
1 - UN - 4,000 tons (Attack No. 4)

2. Reference (a) should read as follows:

S U N K
1 - Large AO (EU) - 10,000 tons (Attack No. 2)
1 - Large AK (EU) - 7,500 tons (Attack No. 3)
TOTAL SUNK 17,500 tons

D A M A G E D
1* - CV (SHOKAKU or HAYATAKA Type)(EC) - *29,800 tons (Attack No. 4)
1 - UN - 4,000 tons (Attack No. 4)
TOTAL DAMAGED 33,800 tons
TOTAL SUNK & DAMAGED 51,300 tons
*This CV also damaged by the U.S.S. REDFISH (SS395) on her second
war patrol.

J. H. BROWN, Jr.,
Deputy ComSubPac.

Authentication and distribution
on following page.

- 1 -

— page 102 —
FF12-10(1)/A16-3(18) SUBMARINE FORCE, PACIFIC FLEET
Serial 084
Care of Fleet Post Office,
San Francisco, California.
1 Feb 1945.

CONFIDENTIAL

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

Subject: U.S.S. SEA DEVIL (SS400) - Report of Second War Patrol,
Additional Damage to the Enemy.

— page 103 —
SS400/A16-3

Serial: (2)
DECLASSIFIED-L

From:
To :
Via :

Subject:

Enclosure:

1.
conducted in the Yellow Sea area during the period 7 February 1945 to 20
April 1945, is forwarded herewith.

[HANDWRITTEN: FILMED]
[HANDWRITTEN: 120286] U.S.S. SEA DEVIL (SS400)
Care of Fleet Post Office,
San Francisco, California,
20 April 1945.
DECLASSIFIED ART. 0445, OPNAVINST 5510.1C
BY [SIGNATURE: CM9BJH] DATE [HANDWRITTEN: 7/15/77]

The Commanding Officer, U.S.S. SEA DEVIL (SS400).
The Commander-in-Chief, United States Fleet.
(1) The Commander Submarine Division TWO EIGHTY-ONE.
(2) The Commander Submarine Squadron TWENTY-EIGHT.
(3) The Commander Submarine Force, Pacific Fleet.
(4) The Commander-in-Chief, U.S. Pacific Fleet.

U.S.S. SEA DEVIL (SS400), Report of War Patrol Number Three (3).

(A) Subject Report.
(B) Track Chart (ComSubPac only).
(C) Additional Data Forms (ComSubPac only).

Enclosure (A), covering the third war patrol of this vessel

[SIGNATURE: R. E. STYLES]

— page 108 —
C-O-N-F-I-D-E-N-T-I-A-L

U.S.S. SEA DEVIL (SS 400) - Report of Third War Patrol.

8 March 1945.

0437 Dived.

1200 Posit: 31°-26' N 128°-30' E.

1838 Surfaced.

2025 Contacted air-search radar on DANJO GUNTO at 96 mcs.

9 March 1945.

0458 Dived.

1200 Posit: 33°-36' N 127°-47' E.

1849 Surfaced.

10 March 1945.

0447 Dived.

0918 Sighted small sailing junk bearing 323°T, 3000 yards. (S.C. #7)

1200 Posit: 33°-43' N 127°-08' E.

1317 Sighted small fishing sampan with three dorys in tow bearing
     046°T, range 3000 yards. (S.C. #8)

1856 Surfaced.

1857 Obtained saturated signal at 165 mcs. on APR. Assumed transmission
     to be emanating from KYOBUN TO as the strength of the signal
     varied directly with the range to this island.

11 March 1945.

0210 SJ radar contact bearing 038°T, range 7100 yards. This contact
     was the beginning of similar ones on various assortments of junks
     and sampans throughout the day. (S.C. #9)

0330 Contacted 10 cm. radar interference on SJ radar bearing 317°T.
     The interference had the exact characteristics of our own SJ,
     however, it is believed that none of our submarines were in this
     vicinity. Proceeded in general direction of interference and
     prior to diving, the signal became of such strength that the
     source was assumed to be not more than 20,000 yards away. From
     our position this placed the source at latitude 34°-19' N,
     longitude 128°-05' E. (See Section U)

- 5 -

— page 113 —
4-26
'C-O-N-F-I-D-E-N-T-I-A-L
U.S.S. SEA DEVIL (SS400) - Report of Third War Patrol.

1824 Surfaced.
1825 Sent weather report.
1941 Sighted lights of previous junks on the horizon.
23 March 1945.
0506 Dived.
0750 Sighted fishing junk bearing 047°T, range four miles. (S.C. #18)
1200 Posit: 35°-45' N 121°-13' E.
1905 Surfaced.
24 March 1945.
0525 Dived.
0935 JP-2 contacted screws and pinging bearing 220°T. Could see
     nothing through the periscope at 45 feet, although the visibility
     was fair with a slight surface haze. (S.C. #19)
0955 Surfaced to increase radius of search but could still see nothing
     through the high periscope.
1000 Dived and headed north at 2/3's speed as true bearing of screws
     was increasing very slowly.
1010 JK reported two sets of pingers while JP-2 was obtaining excellent
     bearings of loud screws and pinging. Could still see nothing at
     40 feet.
1104 Sighted large tanker with four escorts bearing 245°T. ST radar
     obtained range on tanker at 7,700 yards. Angle on bow was 60°
     starboard so came to normal approach course and ran at full speed
     to close track and hoped for a zig towards. The tanker had an
     escort on each bow and quarter with the two leading escorts
     pinging. About every three to five minutes the whole outfit would stop
     while the escorts probably conducted a sonic search. TDC and
     plot tracked convoy on course 020° T, speed 10 knots.
1200 Posit: 34°-46' N 121°-53' E.
1210 Tanker now had an angle on bow of 120° starboard and the range
     was 5800 yards. Continued on normal approach course at full speed.

- 10 -

— page 126 —
C-O-N-F-I-D-E-N-T-I-A-L
U.S.S. SEA DEVIL (SS400) - Report of Third War Patrol.

0851(I) Surfaced.
1200(I) Posit: 29°-28' N 133°-26' E.
1324(I) SD contact and bridge sighting of unidentified plane bearing
         160°T, range 17 miles.
1535(I) Sighted two unidentified planes bearing 130°T, range 7 miles
         and heading away. Heard voices of high signal strength on VHF
         as planes passed from the planes which just passed.
         Called them and said we were looking for Goodyear in this
         vicinity and to keep a sharp look out for same. Received
         "WILCO" from plane.
1600(I) Searched over four hundred square miles unsuccessfully for
         remaining pilot. Also with many friendly planes in vicinity
         and no word over VHF of sighting a Goodyear. Reluctantly
         decided to abandon search and resume course to Saipan. The
         rescued pilots seemed very doubtful that the lost pilot had
         been able to inflate his rubber boat. If his boat were afloat,
         I'm sure I would have seen it during the day. The seas were
         calm and there was unlimited visibility.
2301(I) SD radar plane contact bearing 164°T, range 7,800 yards.
2302(I) SD radar contact at two miles. No IFF return. Dived.
2316(I) Surfaced.

10 April 1945.
0253(I) SD radar contact at 3 miles. IFF return.
0254(I) SD radar contacts at 2, 7, and 10 miles. All friendly.
0337(I) SD radar contact at 12 miles. Friendly.
1200(I) Posit: 27°-09' N 137°-12' E.
         Sighted friendly planes throughout day.

11 April 1945.
1200(I) Posit: 20°-30' N 137°-42' E.
         Sighted friendly planes throughout day.
1515(I) Sighted U.S.S. TENCH through high periscope bearing 067°T,
         range 8 miles.

- 23 -

— page 130 —
C-O-N-F-I-D-E-N-T-I-A-L
U.S.S. SEA DEVIL (SS400) - Report of Third War Patrol.

F. SHIP CONTACTS
: Time : Lat & : : Initial : Est. C. : How :
No. : Date : Long. : Type : Range : & Speed : Contacted : Remarks
:2103(X) : 21-08N :
1. : 8 Feb. : 165-08W : U.S. Submarine :Interference : : SJ Radar : Identified as GREENLING by SJ
:1425(Y) : 20-45N : : : 090° T : High : recognition.
:1755(Y) : 20-40N :
2. : 11 Feb. : 179-52W : U.S. Submarine :18,000 yds : 15 kts : Periscope : Identified as PICUDA.
:2040(Z) : 16-46N : : : : : Identified as ANGLER by SJ
:18 Feb. : 146-41E : U.S. Destroyer :Interference : : SJ Radar : recognition.
3. :1650(I) : 20-30N : : : : :
: 2 Mar. : 135-22E : U.S. Destroyers(2):20,500 yds : : SJ Radar : Friendly radar picket boat.
4. :0009(I) : 30-05N : : : High :
: 7 Mar. : 130-12E : U.S. Submarine :15,000 yds : : Periscope : Searching for downed aviators.
5. :0918(H) : 33-56N : : : : : Identified as TILEFISH by SJ
:10 Mar. : 127-08E : Sailing junk :11,900 yds : : SJ Radar : recognition.
6. :1317(H) : 33-48N : Sampan with dorys : 3,000 yds : 220° T : JP-2 :
:10 Mar. : 127-09E : in tow. : : 5 kts : :
7. :0210(H) : 34-06N : : 3,000 yds : 220° T : JP-2 :
:11 Mar. : 128-02E : Junks and Sampans : : 5 kts : :
8. :2114(H) : 32-14N : : 7,100 yds : : SJ Radar : Contacted about 20 junks and sampans
:12 Mar. : 128-37E : Sampan : : : Periscope : throughout the day.
9. :1010(H) : 31-20N : : 6,800 yds : 150-220° T : :
:16 Mar. : 130-04E : Lugger : : 4.5 kts : SJ Radar : Avoided.
10. :0346(H) : : 6,000 yds : 000° T : Periscope :
:18 Mar. : : : 4 knots : :
11. :2120(H) : 32-08N : : Fishing sampans :10,000 yds : : Lookout : Avoided.
:19 Mar. : 122-40E : Sampan or junk : : : :
12. :0624(H) : 30-57N : : 6,200 yds : : SJ Radar : Avoided.
:20 Mar. : 123-32E : Sailing junk : : : :
13. :2132(H) : 30-22N : : 4,000 yds : : Periscope :
:20 Mar. : 123-09E : Sampan or junk : : : :
14. :0100(H) : 32-47N : : 5,600 yds : : SJ Radar : Avoided.
:22 Mar. : 122-16E : Sampans or junks : : : :
15. : : : 7,000 yds : : SJ Radar : Avoided.
16. :

- 27 -

— page 132 —
C-O-N-F-I-D-E-N-T-I-A-L U.S.S. SEA DEVIL (SS400) - Report of Third War Patrol.

F. SHIP CONTACTS
| No. | :Time & | : Lat & | Type | : Initial | : Est. C. | How | Remarks |
| | : Date | : Long | | : Range | : & Speed | : Contacted | |
| 34. | :0039(H) | : 35-45N : | Junk. | : 5,000 yds | : | : SJ Radar | : Avoided. |
| | :28 Mar. | : 122-24E : | | | | | |
| 35. | :128 Mar. | : 124-52E : | Fishing Junks. | :12,000 yds | : | : Lookout | : Avoided. |
| | :0618(H) | : 35-07N : | | | | | |
| 36. | :0849(H) | : 34-27N : | Junk. | :10,000 yds | : | : Lookout | : Avoided. |
| | :29 Mar. | : 125-53E : | | | | | |
| 37. | :0942(H) | : 34-17N : | Junk. | :10,000 yds | : | : Lookout | : Avoided. |
| | :29 Mar. | : 124-00E : | | | | | |
| 38. | :2052(H) | : 33-15N : | Junk. | : 8,000 yds | : | : Lookout | : Avoided. |
| | :29 Mar. | : 124-07E : | | | | | |
| 39. | :2157(H) | : 33-24N : | Junk. | :11,000 yds | : | : SJ Radar | : Avoided. |
| | :31 Mar. | : 122-41E : | | | | | |
| 40. | :2317(H) | : 34-12N : | Sunken Freighter. | :40,500 yds | : | : SJ Radar | : Made approach until identified |
| | :31 Mar. | : 122-21E : | | | | | | as sunk. |
| 41. | :2355(H) | : 34-15N : | Junk. | : 6,000 yds | : | : SJ Radar | : Avoided. |
| | :1 April | : 122-20E : | | | | | |
| 42. | :0208(H) | : 34-14N : | Junk. | : 8,200 yds | : | : SJ Radar | : Avoided. |
| | :1 April | : 122-22E : | | | | | |
| 43. | :0710(H) | : 34-09N : | Junk. | : 8,450 yds | : | : SJ Radar | : Avoided. |
| | :2 April | : 123-03E : | | | | | |
| 44. | :1816(H) | : 33-31N : | Four merchantmen | : | :025-065°T : | : Developed into attack |
| | :2 April | : 123-59E : | Three escorts (UN) | :14,000 yds | :7.5 kts | : JP-2 | : #1 to #5. |
| 45. | :2030(H) | : 33-13N : | Junk. | : 6,000 yds | : | : Lookout | : Avoided. |
| | :4 April | : 122-35E : | | | | | |
| 46. | :2200(H) | : 33-00N : | Two Junks. | :10,700 yds | :180°T | : SJ Radar | : Avoided. |
| | :4 April | : 122-04E : | | | :5.6 kts | | |
| 47. | :0010(H) | : 32-35N : | Junk. | :10,100 yds | : | : SJ Radar | : Avoided. |
| | :4 April | : 122-11E : | | | | | |
| 48. | :0138(H) | : 32-31N : | Junk. | : 9,600 yds | : | : SJ Radar | : Avoided. |
| | :5 April | : 122-15E : | | | | | |
| 49. | :0252(H) | : 32-31N : | Junk. | :10,700 yds | : | : SJ Radar | : Avoided. |
| | :5 April | : 122-31E : | | | | | |

— page 133 —
C-O-N-F-I-D-E-N-T-I-A-L

U.S.S. SEA DEVIL (SS400) - Report of Third War Patrol.

F. SHIP CONTACTS
| No. | Time & Date | Lat & Long | Type | Initial Range | Est. C. & Speed | How Contacted | Remarks |
|---|---|---|---|---|---|---|---|
| | :0707(H) | :32-35N | Junk. | :14,000 yds | : | :Lookout | :Avoided. |
| | :5 April | :123-47E | | | | | |
| 50. | :0707(H) | :32-35N | | | | | |
| | :5 April | :123-47E | | | | | |
| 51. | :1340(H) | :32-21N | Subchaser | : 6,000 yds | : | :JK | :Contacted pinging, avoided. |
| | :5 April | :124-33E | | | | | |
| 52. | :2100(H) | :32-21N | U.S. Submarine | :Interference | : | :SJ Radar | :Identified as SPADEFISH by |
| | :5 April | :125-31E | | | | | :SJ recognition. |
| 53. | :0040(I) | :17-30N | U.S. Submarine | :Interference | : | :SJ Radar | :Identified as POMPON by |
| | :12 April | :138-30E | | | | | :SJ recognition. |
| 54. | :2130(I) | :14-31N | U.S. Submarine | :12,500 yds | : | :SJ Radar | :Identified as ATULE by |
| | :12 April | :143-21E | | | | | :SJ recognition. |
| 55. | :2010(I) | :16-33N | U.S. Submarine | :10,500 yds | : | :SJ Radar | :Identified as GAR by |
| | :14 April | :145-59E | | | | | :SJ recognition. |
Note: Contacts with TENCH, GROUPER, and BALAO were not included in above table.

G. AIRCRAFT CONTACTS.

A surprisingly low total of five aircraft contacts were made in the area. Our landing on OKINAWA
and poor flying conditions were probably the reasons. However, it was necessary to dive three times
during the nights of 6 and 7 April while patrolling south of KYUSHU after necessary departure from area.
Each plane with the ranges closing very rapidly. It seemed more likely that they were friendly,
our only solution was dive as there was no opportunity for definite identification. Many friendly
planes were encountered night and day to and from the area.

[HANDWRITTEN: - 30 -]

— page 139 —
C-O-N-F-I-D-E-N-T-I-A-L
U.S.S. SEA DEVIL (SS400) - Report of Third War Patrol.
H. ATTACK DATA. (Continued)

U.S.S. SEA DIVIL Torpedo Attack No. 3 Patrol No. 3 (Continued)
Tubes Fired #8 #9 #10
Track Angle 10°P 10°P 9°P
Gyro Angle 155° 155°-301 156°-501
Depth Set 21 21 21
Power 27 Kts 27 Kts 27 Kts
Hit or Miss Hit Hit Miss
Erratic No No Unknown
Mark Torpedo 18-2 18-2 18-2
Serial No. 57793 57823 57551
Mark Exploder 8-7 8-7 8-7
Serial No. 11392 11305 11136
Actuation Set Contact Contact Contact
Actuation Actual Contact Contact
Mark Warhead 18-2 18-2 18-2
Serial No. 34-59 3845 3780
Explosive Torpex Torpex Torpex
Firing Interval 10 S 10 S 10 S
Type Spread 0° 1/3° L 1/3° R
Sea Conditions Force 2
Overhaul Activity Submarine Base, P.H., T.H.

Remarks: Length of Run: 1300 yards Duration: 1 min. 50 sec.
Temperature Electrolyte: 60° F.
Injection Temperature: 48° F.

- 36 -

— page 147 —
C-O-N-F-I-D-E-N-T-I-A-L
U.S.S. SEA DEVIL (SS400) - Report of Third War Patrol.

Date     | Time(GCT) | Lat.    | Long.     | Max. Depth | Gradient
|||||
9 Feb.   | 1715      | 21-05 N | 161-29 W  | 340'       | Isothermal to 220'
         |           |         |           |            | 2° Neg. to 340'
13 Feb.  | 0325      | 20-04 N | 173-52 E  | 440'       | Isothermal to 320'
         |           |         |           |            | 6° Neg. to 420'
17 Feb.  | 1945      | 18-47 N | 154-53 E  | 400'       | Isothermal to 440'
         |           |         |           |            | Isothermal to 280'
         |           |         |           |            | 5° Neg. to 400'
5 Mar.   | 2045      | 29-33 N | 135-10 E  | 380'       | Isothermal to 100'
         |           |         |           |            | 1° Neg. to 380'
10 Mar.  | 2015      | 34-10 N | 128-03 E  | 160'       | Isothermal to 60'
         |           |         |           |            | 2° Neg. to 80'
         |           |         |           |            | Isothermal to 160'
26 Mar.  | 0823      | 34-37 N | 124-56 E  | 80'        | 1° Neg. to 60'
         |           |         |           |            | Isothermal to 80'
27 Mar.  | 2002      | 35-53 N | 120-01 E  | 60'        | Isothermal to 40'
         |           |         |           |            | ½° Neg. to 60'
30 Mar.  | 0840      | 32-33 N | 124-28 E  | 60'        | 1° Neg. to 40'
         |           |         |           |            | Isothermal to 50'
         |           |         |           |            | 1° Neg. to 60'
1 Apr.   | 1945      | 34-48 N | 124-39 E  | 240'       | Isothermal to 70'
         |           |         |           |            | 1½° Neg. to 140'
         |           |         |           |            | 2° Pos. to 180'
         |           |         |           |            | Isothermal to 240'
3 Apr.   | 0800      | 32-29 N | 124-43 E  | 80'        | Isothermal to 50'
         |           |         |           |            | 2° Neg. to 60'
6 Apr.   | 1014      | 31-44 N | 128-07 E  | 260'       | Isothermal to 80'
         |           |         |           |            | 1° Neg. to 90'
         |           |         |           |            | 1½° Neg. to 105'
         |           |         |           |            | Isothermal to 120'
         |           |         |           |            | 2½° Neg. to 185'
         |           |         |           |            | 1° Neg. to 260'
7 Apr.   | 0502      | 29-45 N | 129-54 E  | 100'       | 2° Neg. to 100'
         |           |         |           |            | 1½° Neg. to 100'

P. HEALTH, FOOD, AND HABITABILITY.

    With the exception of a few colds, minor cuts, and bruises, the health
    of the crew was excellent throughout the patrol. One Japanese prisoner died
    shortly after being rescued, while the other three made slow recoveries from
    the shock of two torpedo hits and exposure to extremely cold water. One
    aviator who was rescued suffered an anti-climax of shock and exposure from
    thirty-six hours of being adrift. The pharmacist's mate administered one
    unit of blood plasma and a rapid recovery was evidenced.
    The cold weather clothing was very adequate for an average temperature
    of 41°F while on station.

- 44 -

— page 152 —
SUBMARINE ADVANCED TRAINING AND RELIEF CREW NUMBER ONE
Care of Fleet Post Office
San Francisco, California.
22 April 1945.

.16-3
Serial: (011)
C-O-N-F-I-D-E-N-T-I-A-L
FIRST ENDORSEMENT to
U.S.S. SEA DEVIL (SS400) Report
of Third War Patrol.

From: The Administrative Commander, Submarine Advanced Training and
Relief Crew Number One.
To : The Commander-in-Chief, United States Fleet.
Via : (1) The Commander Submarine Force, Pacific Fleet, Subordinate
Command No. 1504.
(2) The Commander Submarine Force, Pacific Fleet.
(3) The Commander-in-Chief, U. S. Pacific Fleet.

Subject: U.S.S. SEA DEVIL (SS400) - Report of THIRD War Patrol.

1. The third war patrol of the SEA DEVIL, conducted in the Yellow
Sea area, was of seventy-three days duration, thirty-one of which were spent in
the patrol area.

2. The SEA DEVIL was unit of a coordinated patrol group consisting
of SEA DEVIL, TENCH, and BALAO with the Commanding Officer of the TENCH, Commander
W. B. SIEGLAFF, as Group Commander. In addition to sinking six ships while con-
ducting normal offensive patrolling the SEA DEVIL:
(a) Rescued three (3) Marine pilots, all from the U.S.S. ESSEX
(Captain T. L. LINSON, U.S.M.C.R., 2nd Lieutenant H. M.
SACERS, U.S.M.C.R., and 2nd Lieutenant T. M. LEWIS, U.S.M.C.R.).
(b) Picked up four (4) Jap survivors from sunken ships, one (1)
of whom died later.
(c) Destroyed five (5) floating mines.

3. Only two worthwhile torpedo targets were sighted. One of these
contacts (24 March 1945) a large tanker and four (4) escorts, the SEA DEVIL was
unable to close submerged. Upon surfacing later the SEA DEVIL searched for seven-
teen (17) hours without regaining contact. The other contact consisted of a con-
voy of three large AKs, one small unidentified AK, and three escorts, picked up
on the early morning of 2 April 1945, in a heavy fog. In a period of three hours
and thirty-five minutes the SEA DEVIL delivered five aggressive torpedo attacks
and completely wiped out this convoy, except for one escort, which wisely cleared
the area. A total of fifteen Mark 18 torpedoes were fired in this series of five
outstanding attacks for a total of ten hits. This speaks very highly of the fire
control party and torpedomen of the SEA DEVIL.

- 1 -

— page 153 —
SUBMARINE ADVANCED TRAINING AND RELIEF CREW NUMBER ONE

A16-3

Serial: (011)

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

FIRST ENDORSEMENT to
U.S.S. SEA DEVIL (SS400) Report
of Third War Patrol.

Subject: U.S.S. SEA DEVIL (SS400) - Report of THIRD War Patrol.

— page 154 —
A16-3

Serial: (082)

C-O-N-F-I-D-E-N-T-I-A-L
SECOND ENDORSEMENT to
U.S.S. SEA DEVIL (SS400)
Report of Third War Patrol
dated 20 April 1945.

From: The Commander Submarine Force, Pacific Fleet,
Subordinate Command, Navy No. 1504.
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. SEA DEVIL (SS400) - Report of THIRD War Patrol.

1. Forwarded, concurring in the remarks of the Administrative
Commander, Submarine Advanced Training and Relief Crew Number ONE.

2. The high percentage of torpedo hits in the attacks on the
enemy convoy indicates superior fire control solutions and excellent Mark
18 torpedo performance. It is recommended that the U.S.S. SEA DEVIL be
credited with the following damage to the enemy during this patrol:

SUNK
1 - Large AK (EU) 7500 tons (Attack #1)
1 - Large AK (EU) 7500 tons (Attack #1)
1 - Large AK (EU) 7500 tons (Attack #2)
1 - Small AK (EU) 2000 tons (Attack #5)
1 - Escort PF Type (EU) 1000 tons (Attack #3)
1 - Escort PF Type (EU) 1000 tons (Attack #4)

3. The commanding officer, officers and crew of the U.S.S.
SEA DEVIL are heartily congratulated upon the completion of this outstand-
ing and aggressive patrol, the damage inflicted upon the enemy, and the
rescue of aviation personnel.

COMMANDER SUBMARINE FORCE, PACIFIC FLEET
SUBORDINATE COMMAND, NAVY NO. 1504

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

[SIGNATURE: K. C. Hurd]
K. C. HURD

— page 155 —
2ND Copy
FF12-10(A)16-3(18) SUBMARINE FORCE, PACIFIC FLEET
Serial 01031
CONFIDENTIAL
THIRD ENDORSEMENT to
SEA DEVIL Report of
Third War Patrol.
COMSUB SPAC PATROL REPORT NO. 735
U.S.S. SEA DEVIL - THIRD 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. SEA DEVIL (SS400) - Report of Third War Patrol.
(7 February to 20 April 1945).

1. The third war patrol of the SEA DEVIL, under the command of Commander
R. E. STYLES, U.S. Navy, was conducted in the Yellow Sea area. The SEA DEVIL,
along with the U.S.S. GUARDFISH, U.S.S. HALAO, U.S.S. GROUPER, and U.S.S. TENCH,
formed a coordinated attack group, with the commanding officer of the TENCH as the
group commander. In addition to offensive patrol, the group performed lifeguard
duties.

2. This most active and aggressive patrol resulted in two contacts
worthy of torpedo fire, one of which could not be closed. The other, a convoy,
consisting of four merchantmen and three escorts, netted five successful attacks.
The enemy was able to save only one escort out of this convoy. The attacks on
this convoy were brilliant and aggressive. The SEA DEVIL had the great pleasure
and satisfaction of rescuing three marine pilots from the ESSEX group.

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

4. The Commander Submarine Force, Pacific Fleet, congratulates the
commanding officer, officers, and crew of the SEA DEVIL for this most aggressive
and splendid successful patrol, added to her previous fine record. This patrol
resulted in the following damage to the enemy:

RECEIVED S-C FILES
23C Room 2055
ROUTE TO: 11 MAY 1945 [HANDWRITTEN: 416-3/23/55400]
Op File No. (bb) [HANDWRITTEN: 169145]
Sec. No. [HANDWRITTEN: 5]
Copy No. [HANDWRITTEN: 2]
[STAMP: Office of the Chief of Naval Operations
FLEET MAINTENANCE
MAY 15 1945
RECEIVED
NAVY DEPARTMENT]

— page 156 —
FF12-10(A)/A16-3(18) SUBMARINE FORCE, PACIFIC FLEET
Serial 01031 Care of Fleet Post Office,
San Francisco, California,
4 May 1945.
CONFIDENTIAL
NOTE: THIS REPORT WILL BE
THIRD ENDORSEMENT to DESTROYED PRIOR TO
SEA DEVIL Report of ENTERING PATROL AREA.
Third War Patrol.

COMSUB SPAC PATROL REPORT NO. 735
U.S.S. SEA DEVIL - THIRD WAR PATROL

Subject: U.S.S. SEA DEVIL (SS400) - Report of Third War Patrol
( 7 February to 20 April 1945).

S U N K

4 - AK's (UN) 16,000 tons (Attacks Nos. 1,2, and 5)
2 - Escorts (UN) 1,600 tons (Attacks Nos. 3 and 4).
TOTAL SUNK 17,600 tons.

MERRILL COMSTOCK
[SIGNATURE: Y. L. Hynes] [HANDWRITTEN: 2nd,]
Flag Secretary.

DISTRIBUTION:
(Complete Reports)
Cominch (7) ComsubspacAdCond (40)
CNO (5) SubLant, MI (2)
Cincpac (6) ComsubspacSubord.com (3)
JICPOA (1) All Squadron and Div.
AdICPOA (1) Commanders, Pacific (2)
Comservpac (1) Substrainpac (2)
Cinclant (1) All Submarines, Pacific (1)
Comsubslant (8)
S/M School, NL (2)
CO, S/M Base, PE (1)
Comsopac (2)
Comsowespac (1)
ComsubsoWespac (2)
CTG 71.9 (2)
Comnorpac (1)
Comsubspac (3)
[STAMP: RECEIVED 21 MAY 1945]

— page 157 —
SS400/A16-3

Serial: (003)

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

From: The Commanding Officer, U.S.S. SEA DEVIL (SS400).
To : The Commander-in-Chief, United States Fleet.
Via : (1) The Commander Submarine Division TWO EIGHTY-ONE.
(2) The Commander Submarine Squadron TWENTY-EIGHT.
(3) The Commander Submarine Force, Pacific Fleet.
(4) The Commander-in-Chief, U.S. Pacific Fleet.

Subject: U.S.S. SEA DEVIL (SS400), Report of War Patrol Number Four (4).

Enclosure: (A) Subject Report.
(B) Track Chart (ComSubPac only).
(C) Additional Special Letter (ComSubPac only).

1. Enclosure (A), covering the fourth war patrol of this vessel
conducted in the East China and Yellow Sea area during the period 19 May 1945
to 15 July 1945, is forwarded herewith.

U.S.S. SEA DEVIL (SS400)
Care of Fleet Post Office,
San Francisco, California,
15 July 1945.
[STAMP: DECLASSIFIED ART. 0445, OPNAVINST 5510/1C]
BY [HANDWRITTEN: OP09B4] DATE [HANDWRITTEN: 6/15/72]

C. F. MC GIVERN.

[HANDWRITTEN: FILMED]
[HANDWRITTEN: 135173]

— page 168 —
C-O-N-F-I-D-E-N-T-I-A-L
U.S.S. SEA DEVIL (SS400) - Report of Fourth War Patrol.

0443 Submerged northeast of SHANTUNG PROMONTORY. Best visibility
to date.

1200 Posit: 38°-00' N 123°-28' E.

1304 Surfaced.

1326 Submerged.

1815 Heard echo ranging bearing 272° T drawing to the right.
No [UNCLEAR: ded] toward.

1830 Sighted two destroyer escorts KAIWAKI (2 class, patrolling
on base course 065° T, speed 10 knots. (S.C. #21)

1900 DE's passed to northward, least range 8000 yards. May have
been our friends from yesterday.

2059 Surfaced and headed east for landfall on DAISEI GUNTO.

2248 Detected SJ radar interference bearing 111° T, probably
RONQUIL. (S.C. #22)

16 June 1945.

0028 Radar contact bearing 070° T, three pips, range 8900 yards.
(S.C. #23) Tracked them alternately lying to, and underway
on base course 270° T at 4 knots. Decided to close cautiously
and attempt identification.

0122 2500 yards on port beam of nearest vessel. Silhouette is low
and short, no sail. Tempted to fire a torpedo but afraid
target is too small. Too dark for gunfire, no echo ranging.

0137 Opened range to westward with intention to return at dawn
look this contact over.

0330 Headed east.

0356 Regained contact at 9000 yards, bearing 067° T.

0415 Submerged on port bow of small craft formation.

0439 Sighted three vessels bearing about 030° T in line of bearing,
all three with 0° or small angle on the bow. SEA DEVIL turned
away. Range about 6000 yards. No echo ranging.

- 11 -

— page 179 —
C-O-N-F-I-D-E-N-T-I-A-L
U.S.S. SEA DEVIL (SS400) - Report of Fourth War Patrol.

1105 Sighted life raft dead ahead.

1120 Recovered missing PBM crew member:
 KOEHLER, B. P., Slc, USNR.
 He was weak from lack of water and food, but otherwise in good
 condition. He had seen our Very stars during the night but had
 no pyrotechnics with which to reply.

1126 Set course to DANJO GUNTO.

1300 Posit: 30°-06' N 124°-59' E.

1325 Submerged.

1858 Surfaced.

2000 Transmitted SEA DEVIL fourth reporting all survivors on board.

2 July 1945.

0513 Submerged west of DANJO GUNTO.

1200 Posit: 32°-06' N 127°-07' E.

1316 Surfaced.

1326 SD radar contact 12 miles, opening, no IFF.

1417 Submerged.

1420 Decoded COMSUBPAC dispatch regarding survivors 90 miles
 southwest of us.

1427 Surfaced and headed for reported position of survivors.

1435 WOPACQ message from SEA OWL giving her position and requesting
 ours. She is about 15 miles closer to survivors.

1444 Gave SEA OWL our position.

1515 Orbiting aircraft heard on life guard frequency. One plane
 is in contact with SEA OWL leading her in.

1553 Obtained corrected position from aircraft.

1619 Sighted mine 1000 yards on port beam.

- 22 -

— page 181 —
C-O-N-F-I-D-E-N-T-I-A-L
U.S.S. SEA DEVIL (SS400) - Report of Fourth War Patrol.

2008 Surfaced, closing NOMA MISAKI.
2351 Ten miles from NOMA MISAKI. Turned to parallel the coast
     enroute BONO MISAKI. Various strong radar signals which had
     been sweeping as we approached the coast, remained steady on
     us until

5 July 1945.

0035 Eight miles from BONO MISAKI when we turned and opened the
     coast, when the same radar began sweeping again. It appears
     we were being tracked, and will probably find out after
     moonrise.
0254 SJ radar contact on aircraft dead ahead (directly down moon),
     closed from 9500 yards to 8500 yards in 12 seconds with no
     change in bearing. Submerged.
0322 Surfaced.
0431 Submerged between UJI GUNTO and KUSAKAKI SHIMA.
1200 Posit: 30°-57' N 129°-10' E.
1432 Surfaced.
1438 Talked over VHF with rescue plane. Offered our services.
1602 Submerged.
1844 Sighted two unidentified aircraft 280° T, 10 miles.
1852 Sighted small float plane, 130° T, 8 miles.
2006 Surfaced.
2015 Talked with friendly plane on VHF.
2103 SJ radar contact on friendly plane 076° T, 11 miles.
2314 SJ radar contact on aircraft 7 miles, opening.
2350 SJ radar contact on aircraft 8 miles, opening.

6 July 1945.

0130 Talked over VHF with search plane and requested he search ahead
     of us (090° T) where OOD thought he had seen a green flare.

- 24 -

— page 187 —
C-O-N-F-I-D-E-N-T-I-A-L
U.S.S. SEA DEVIL (SS400) - Report of Fourth War Patrol.

F: SHIP CONTACTS.
: Time & : Lat & : : Initial : Est. C. : How :
No. : Date : Long. : Type : Range : & Speed : Contacted : Remarks
: : : : : : : :
: 2025 (L) : 18-03 N : : : : : Identified as MADDO by
1. : 26 May : 151-31 E : U.S. Submarine : Interference: : SJ Radar : SJ recognition.
: 1013 (K) : 17-06 N : : : : High : Identified as PERCH by
2. : 27 May : 148-22 E : U.S. Submarine : 18,000 yds : : Periscope : visual identification.
: 1905 (K) : 19-06 N : U.S. CVE and : : : High : Avoided after
3. : 30 May : 142-04 E : two destroyers : 25,000 yds : : Periscope : exchanging calls.
: 1500 (K) : 27-15 N : : : 350° T : Identified as PADDLE by
4. : 2 June : 139-49 E : U.S. Submarine : 10,000 yds : 15 kts : SJ Radar : visual identification.
: 1817 (K) : 27-58 N : : : : : Identified by I.F.F. and
5. : 2 June : 139-46 E : U.S. Destroyer : 15,000 yds : South : SJ Radar : APR characteristics.
: 0740 (K) : 29-52 N : : : : High : SCABBARD FISH ??
6. : 5 June : 130-36 E : U.S. Submarine : 14,000 yds : : Periscope : Identified as SEA OWL by
: 2141 (I) : 31-57 N : : SJ : : : Identified as SEA OWL by
7. : 6 June : 128-52 E : U.S. Submarine : Interference: : SJ Radar : SJ recognition.
: 0428 (I) : 33-22 N : Patrol boat or : : : : Identified visually
8. : 7 June : 127-38 E : Sampan : 7,000 yds : Lying to: SJ Radar : and avoided.
: 2101 (I) : 33-44 N : : SJ : : : Identified as SEA OWL by
9. : 7 June : 127-00 E : U.S. Submarine : Interference: : SJ Radar : SJ recognition.
: 0300 (I) : 34-26 N : Numerous : : : : Avoided.
10. : 8 June : 124-42 E : Fishing Junks : 10,000 yds : : Lookout : Avoided.
: 0415 (I) : 34-23 N : : SJ : : : Identified as SEGUNDO by
11. : 8 June : 125-08 E : U.S. Submarine : Interference: : SJ Radar : SJ recognition.
: 2129 (I) : 36-05 N : : : : : Identified as SEGUNDO by
12. : 9 June : 123-53 E : U.S. Submarine : 10,000 yds : : SJ Radar : SJ recognition.
: 0100 (I) : 37-25 N : : SJ : : : Identified as SEGUNDO by
13. : 9 June : 124-00 E : U.S. Submarine : Interference: : SJ Radar : SJ recognition.
: 2310 (I) : 37-43 N : Numerous : : : : Assumed to be fishermen
14. : 10 June : 123-25 E : Small Craft : : : SJ Radar : and avoided.
: 2101 (I) : 36-29 N : : : 090° T : Suspected listening
15. : 10 June : 125-21 E : Patrol boat : 10,850 yds : 4 kts : SJ Radar : patrol boat.
: 0126 (I) : 37-31 N : Several : : : : Probably fishermen.
16. : 11 June : 124-23 E : Small Craft : : : SJ Radar : Identified as CONQUIL by
: 0415 (I) : 37-32 N : : SJ : : : SJ recognition.
17. : 12 June : 124-10 E : U.S. Submarine : Interference: : SJ Radar : SJ recognition.
: 0415 (I) : 37-52 N : : : : : One of several fishermen
18. : 12 June : 124-06 E : Junk : 4,950 yds : Lying to: SJ Radar : in vicinity.
[HANDWRITTEN: 30]

— page 188 —
C-O-N-F-I-D-E-N-T-I-A-L
U.S.S. SEA DEVIL (SS400) - Report of Fourth War Patrol.

F. SHIP CONTACTS.
: Time & : Lat & : Type : Range : Est. C. : How : Remarks
No. : Date : Long. : : : & Speed : Contacted :
: 2047(I) : 37-53 N : U.S. Submarine : SJ : 220° T : SJ Radar : Believed to be RONQUIL.
19. : 12 June : 123-57 E : : Interference: : : :
: 1301(I) : 37-36 N : One Merchantman : 25,000 yds : High : Periscope : Developed into
20. : 14 June : 123-35 E : and Two Escorts : : 10 kts : : : Torpedo Attack #1.
: 1830(I) : 37-38 N : Two Destroyer Escorts : 20,000 yds : 065° T : Pinging : Identified as KAIBOKAN #2 class
21. : 15 June : 123-25 E : : : 10 kts : on JP-2 : : on anti-submarine sweep.
: 2248(I) : 37-29 N : U.S. Submarine : SJ : 270° T : SJ Radar : Believed to RONQUIL.
22. : 15 June : 123-32 E : : Interference: : : :
: 0028(I) : 37-32 N : Three Whale Killers : 8,900 yds : High : SJ Radar : Identified at dawn as hunter-
23. : 16 June : 123-53 E : : : 4 kts : : : killer group. (Contact regained)
: 1335(I) : 37-30 N : Fishing vessel : 5 miles : High : Periscope : Avoided.
24. : 16 June : 123-28 E : : : : : :
: 1612(I) : 37-24 N : Two Destroyer Escorts : 20,000 yds : 230° T : Pinging : Unable to close for attack.
25. : 16 June : 123-28 E : : : 10 kts : on JP-2 : :
: 2131(I) : 37-26 N : U.S. Submarine : SJ : : SJ Radar : Believed to be RONQUIL.
26. : 16 June : 123-37 E : : Interference: : : :
: 2228(I) : 36-26 N : U.S. Submarine : SJ : : SJ Radar : Identified as PADDLE by
27. : 17 June : 123-39 E : : Interference: : : : SJ recognition.
: 1350(I) : 37-15 N : Fishing vessel : 16,000 yds : High : Lookout : Avoided.
28. : 20 June : 123-37 E : : : : : :
: 0334(I) : 37-20 N : Fishing vessel : 8,000 yds : High : Periscope : Avoided.
29. : 21 June : 123-43 E : : : : : :
: 0846(I) : 37-20 N : Fishing vessel : 8,000 yds : : Lookout : Avoided.
30. : 21 June : 123-40 E : : : : : :
: 0850(I) : 37-20 N : Three Trawlers : 6 miles : : JP-2 : Developed into
31. : 21 June : 123-40 E : : : : : : Gun Attack #1.
: 2235(I) : 35-28 N : U.S. Submarine : SJ : : SJ Radar : Identified as HADDO by
32. : 24 June : 123-47 E : : Interference: : : : SJ recognition.
: 0411(I) : 35-02 N : Junk : 15,000 yds : High : Lookout : Identified as junk after dive
33. : 25 June : 123-12 E : : : : : : for closer scrutiny.
: 0539(I) : 35-00 N : Junk : 8,000 yds : High : Periscope : Avoided.
34. : 25 June : 123-09 E : : : : : :
: 1549(I) : 35-18 N : Fishing vessel : 18,000 yds : High : Periscope : Avoided.
35. : 25 June : 123-27 E : : : : : :
: 2224(I) : 35-48 N : U.S. Submarine : SJ : : SJ Radar : Believed to be SEA OWL.
36. : 25 June : 123-20 E : : Interference: : : :
[HANDWRITTEN: 31]

— page 189 —
C-O-N-F-I-D-E-N-T-I-A-L
U.S.S. SEA DEVIL (SS400) - Report of Fourth War Patrol.

F. SHIP CONTACTS.
No. : Time : Lat. & : Type : Initial : Est. C. : How : Remarks
: Date : Long. : : Range : & Speed : Contacted :
: : : : : : : :
37. : 0319(I) : 35-09 N : : : : SJ Radar : Avoided.
: 26 June : 123-12 E : Numerous Junks : : : :
38. : 1608(I) : 34-22 N : : 14,000 yds : : Lookout : Avoided.
: 26 June : 123-05 E : Two Junks : : : :
39. : 1650(I) : 34-18 N : : 14,000 yds : : Lookout : Assumed friendly.
: 26 June : 123-03 E : Two Junks : : : :
40. : 1800(I) : 33-51 N : : 14,000 yds : : Periscope : Assumed friendly.
: 26 June : 123-23 E : Fishing vessel : : : :
41. : 0229(I) : 33-10 N : : 16,000 yds : : SJ Radar : Avoided.
: 27 June : 126-39 E : Two Junks : : : :
42. : 0236(I) : 33-39 N : : 2,700 yds : : SJ Radar : Avoided.
: 29 June : 126-25 E : Sailboat : : : :
43. : 0008(I) : 33-46 N : : 8,000 yds : : SJ Radar : Avoided.
: 29 June : 126-25 E : Sailboats : : : :
44. : 0151(I) : 31-26 N : U.S. Submarine : 8,700 yds : : SJ Radar : Identified as QUINAFISH by
: 30 June : 129-15 E : Interference: : : : SJ recognition.
45. : 2214(I) : 31-47 N : U.S. Submarine : : : SJ Radar : Identified as SEA OWL by
: 8 July : 129-09 E : Interference: : : : SJ recognition.
46. : 0325(K) : 24-16 N : U.S. Submarine : : : SJ Radar : Identified as PATFISH by
: 9 July : 139-40 E : Interference: : : : SJ recognition.
47. : 0951(K) : 22-43 N : U.S. Submarine : : : SJ Radar : Identified as RONQUIL by
: 13 July : 139-31 E : Interference: : : : SJ recognition.
48. : 0344(K) : 19-05 N : U.S. Submarine : : : SJ Radar : Identified as JACK by
: 14 July : 141-10 E : Interference: : : : SJ recognition.
49. : : : : 11,500 yds :
[HANDWRITTEN: - 32 -]

— page 192 —
C-O-N-F-I-D-E-N-T-I-A-L

U.S.S. SEA DEVIL (SS400) - Report of Fourth War Patrol.

H. ATTACK DATA. (Continued)

U.S.S. SEA DEVIL Gun Attack No. 1 Patrol No. 4
Time: 0946(I) Date: 21 June 1945 Lat. 37° 20' N Long. 123° 40' E

Target Data - Damage Inflicted

Sunk: Three trawlers - 100 tons, 75 tons, and 50 tons.

Details of Action

Guns used and rounds expended were:

    5"/25, 82 rounds HC-PD fused
    40mm, 67 rounds loaded one and one, HEIT and HET
    20mm, 1011 rounds loaded alternately, HE, HET, and HEIT
    .50 cal. machine gun, 800 rounds

The opening range was 5,400 yards, consequently with small targets the
fire was not too effective. Satisfactory results were obtained as the range
was closed. The 40mm gun jammed when the next round was pushed through the
star wheels before the empty cartridge case was clear. The jam was cleared
in two minutes of the action. The .50 cal. machine
gun side cocking plate bolts sheared off but the gun was replaced in short
order. The safety on the 5" firing mechanism worked too well. The gun would
not fire unless the trip was held down. This did not, however, effect the
efficiency of the gun or crew.
Fire control was the system suggested by Commander D.C. WHITE, USN, using
the TDC as a range-keeper and spotting with the periscope.

I. MINES.

Floating mines were seen at the following positions:

    (1) 29° 38' N 133° 53' E (destroyed)
    (2) 31° 04' N 129° 03' E (destroyed)
    (3) 31° 57' N 126° 59' E
    (4) 35° 06' N 123° 18' E
    (5) 34° 18' N 123° 03' E (three)
    (6) 34° 16' N 123° 05' E
    (7) 34° 12' N 123° 08' E (two)
    (8) 34° 10' N 123° 10' E
    (9) 33° 34' N 123° 21' E
    (10) 33° 31' N 123° 23' E
    (11) 33° 32' N 123° 30' E
    (12) 33° 32' N 123° 36' E (two)
    (13) 32° 59' N 126° 01' E
    (14) 32° 26' N 128° 43' E

- 35 -

— page 199 —
FC5-36/A16-3
Serial: 019
C-O-N-F-I-D-E-N-T-I-A-L

SUBMARINE SQUADRON THIRTY SIX
Care of Fleet Post Office,
San Francisco, California,
17 July 1945.

FIRST ENDORSEMENT to
U.S.S. SEA DEVIL (SS400) -
Report of Fourth War Patrol.

From: The Commander Submarine Squadron Thirty-Six.
To : The Commander-in-Chief, United States Fleet.
Via : (1) The Commander Submarine Force, Pacific Fleet.
Administrative.
(2) The Commander-in-Chief, U.S. Pacific Fleet.
Subject: U.S.S. SEA DEVIL (SS400) - Report of Fourth War
Patrol.

1. The fourth war patrol of the U.S.S. SEA DEVIL, under
the command of Lieutenant Commander C.F. MC GIVERN, was conducted
in the Yellow and East China Sea Area. The patrol was of 58 days
duration of which 36 days were spent in the area; 30 days submerged.
This was Lieutenant Commander MC GIVERN's first patrol as the
commanding officer.

2. One torpedo attack was delivered on 14 June 1945 on
a SCL of 2300 tons escorted by two DE's. The target was contacted
at about 25,000 yards by high periscope one half hour after SEA
DEVIL had surfaced to air out the boat. SEA DEVIL submerged
fifteen minutes later after determining the target's approxi-
mately the target's base course. After conducting a routine
submerged approach SEA DEVIL fired four Mk 18-2 bow torpedoes for
a 'down the throat' shot with a 360 yard torpedo run. Two timed
hits were heard followed by the usual breaking-up noises. SEA
DEVIL was subjected to a relatively ineffective depth charging.

3. On the 15th and again on the 16th of June two
destroyer escorts were contacted apparently on an anti-submarine
sweep as a result of the sinking on the 14th. SEA DEVIL could
not obtain a favorable attack position in either case.

4. On 21 June 1945 SEA DEVIL battle surfaced on three
trawlers, one of which was under tow. All three were sunk and
three prisoners taken.

5. On 30 June 1945 SEA DEVIL rescued one army aviator
from a P-47 and 10 naval aviators from a PBM which had been
damaged in making a water landing to rescue the army aviator.
After a search of about 15 hours, the final crew member of the
PBM was recovered.

-1-

— page 200 —
SUBMARINE SQUADRON THIRTY SIX
FC5-36/A16-3
Care of Fleet Post Office,
Serial: 019
San Francisco, California,
17 July 1945.

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

FIRST ENDORSEMENT to
U.S.S. SEA DEVIL (SS400) -
Report of Fourth War Patrol.

Subject: U.S.S. SEA DEVIL (SS400) - Report of Fourth War
Patrol.

— page 201 —
FF12-10(A)/A16-3(18)
Serial 01895
CONFIDENTIAL

SECOND ENDORSEMENT to
SEA DEVIL Report of
Fourth War Patrol.

COMSUBSPAC PATROL REPORT NO. 829
U.S.S. SEA DEVIL - FOURTH 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. SEA DEVIL (SS400) - Report of Fourth War Patrol
(19 May to 15 July 1945).

SUBMARINE FORCE, PACIFIC FLEET
[STAMP: RECEIVED S-C FILES]
[HANDWRITTEN: 23C Rmm 7055]
Care of Fleet Post Office,
San Francisco, California.
[HANDWRITTEN: 7 Aug 1945]
29 July 1945.
[HANDWRITTEN: 181712]
[HANDWRITTEN: S5400]
NOTE: THIS REPORT WILL BE
DESTROYED PRIOR TO
ENTERING PATROL AREA.
[HANDWRITTEN: 2ND Copy]

1. The fourth war patrol of the SEA DEVIL, under the command of
Lieutenant Commander C. F. McGivern, U.S. Navy, was conducted in the East
China Sea - Yellow Sea Areas. The SEA DEVIL, U.S.S. HIDDO (SS255), and U.S.S.
RONQUIL (SS396) formed a coordinated attack group with the commanding officer
of the RONQUIL as group commander.

2. The SEA DEVIL, on this well conducted, aggressive patrol, made
the most of every opportunity to inflict damage upon the enemy in these areas
where contacts are very scarce. On the torpedo attack, a down-the-throat, close
range attack, on a 2,300 ton Maru resulted in two timed hits and a sinking. A
smartly conducted gun attack accounted for three trawlers. The SEA DEVIL also
had the honor of rescuing the entire crew of a ditched PBM which had of neces-
sity abandoned their plane in attempting to rescue a downed P-47 pilot. The
eleventh member of the PBM crew, who had become separated from the others, was
rescued only after a diligent 15 hour search. To make the incident complete
the SEA DEVIL also picked up and returned the pilot of the downed P-47 safely
to port.

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

4. The Commander Submarine Force, Pacific Fleet, congratulates
the commanding officer, officers, and crew of the SEA DEVIL for this excellent
and successful patrol. The SEA DEVIL is credited with having inflicted the
following damage upon the enemy:

SUNK
1 - Small AK (SCL Type) (EO) | 2,300 tons (Attack No. 1)
3 - MIS Trawlers - 100, 75, and | 225 tons (Gun Attack No. 1)
50 tons) (EO)
[HANDWRITTEN: 39]
TOTAL SUNK | 2,525 tons
[STAMP: AUG 8 1945]
[HANDWRITTEN: -1-]

Distribution & Authentication
on next page.

MERRILL COMSTOCK,
Deputy.

— page 203 —
[STAMP: DECLASSIFIED - ONAY HIST 5000.30]
[HANDWRITTEN: BY 9/12 DATE 4-5-69]

U.S.S. SEA DEVIL (SS400)
Care of Fleet Post Office,
San Francisco, California,
3 September 1945.

SS400/A16-3

Serial: (004)
C-O [HANDWRITTEN: DECLASSIFIED]

From: The Commanding Officer, U.S.S. SEA DEVIL (SS400).
To : The Commander-in-Chief, United States Fleet.
Via : (1) The Commander Submarine Squadron TWENTY-SIX.
(2) The Commander Submarines Southwest Pacific.
(3) The Commander-in-Chief, U.S. Pacific Fleet.

Subject: U.S.S. SEA DEVIL (SS400), Report of War Patrol Number Five (5).

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

1. Enclosure (A), covering the fifth war patrol of this vessel
conducted in the Yellow Sea area during the period 9 August 1945 to 3 September
1945, is forwarded herewith.

[SIGNATURE: C. F. MC GIVERN]
C. F. MC GIVERN.

[HANDWRITTEN: FILMED]
[HANDWRITTEN: 143646]

— page 216 —
C-O-N-F-I-D-E-N-T-I-A-L U.S.S. SEA DEVIL (SS400) - Report of First Patrol.

F. SHIP CONTACTS.
| No. | Time & Date | Lat. & Long. | Type | Initial Range | Est. C. & Speed | How Contacted: | Remarks |
|---|---|---|---|---|---|---|---|
| 1. | 2300(K) 14 Aug | 14-44 N 144-43 E | Two U.S. DD's | 16,000 yds | : | SJ Radar | Identified with IFF. |
| 2. | 0211(K) 15 Aug | 15-32 N 144-45 E | U.S. CVE and Escort. | 21,000 yds | : | SJ Radar | Identified with IFF. |
| 3. | 0200(K) 17 Aug | 22-52 N 139-30 E | U.S. Submarine | Interference: | 180° T | SJ Radar | Identified as BLACKFISH by SJ recognition. |
| 4. | 1215(K) 17 Aug | 23-55 N 139-30 E | U.S. Submarine | 14,000 yds | 180° T | High Periscope | Identified as WHALE by SJ recognition. |
| 5. | 1347(K) 18 Aug | 29-29 N 138-08 E | U.S. Submarine | 14,000 yds | : | High Periscope | Identified as SHAD by searchlight. |
| 6. | 2200(I) 19 Aug | 32-15 N 128-42 E | U.S. Submarine | Interference: | : | SJ Radar | U.S. Submarine. |
| 7. | 2245(I) 20 Aug | 38-08 N 123-41 E | Steam Sampan | 14,000 yds | 6 knots 150° T | Periscope | Enroute KOREA. |
| 8. | 2309(I) 23 Aug | 38-44 N 123-20 E | Numerous Junks | 20,000 yds | : | High Periscope | ANTUNG type. |
| 9. | 2440(I) 24 Aug | 38-42 N 123-31 E | Numerous Junks | 20,000 yds | : | High Periscope | ANTUNG type. |
| 10. | 2610(I) 25 Aug | 37-08 N 124-01 E | Junk | 10,000 yds | : | Periscope | Fishing. |
| 11. | 2630(I) 26 Aug | 37-10 N 124-01 E | Junk | 8,000 yds | : | Periscope | Full of Chinamen. |
| 12. | 2730(I) 27 Aug | 37-38 N 123-51 E | Steam trawler | 12,000 yds | 8 knots 135° T | Periscope | International Hoist VPCQ and square yellow flag with black diamond. |
| 13. | 0803(I) 27 Aug | 37-04 N 122-58 E | Fishing Junks | 10,000 yds | : | High Periscope | Fishing. |
| 14. | 2125(I) 28 Aug | 30-10 N 124-10 E | Junk | 10,000 yds | : | Periscope | : |
| 15. | 0503(I) 29 Aug | 29-30 N 124-06 E | U.S. Submarine | Interference: | : | SJ Radar | Identified as BLACKFIN by SJ recognition. |
| 16. | 30 Aug | 124-04 E | U.S. Submarine | Interference: | : | SJ Radar | Identified as REDFIN by SJ recognition. |

- 13 -

— page 217 —
C-O-N-F-I-D-E-N-T-I-A-L
U.S.S. SEA DEVIL (SS400) - Report of Fifth War Patrol.

G. AIRCRAFT CONTACTS.

Two unidentified planes were sighted east of NANSEI SHOTO but no
threatening action followed. A flight of PBY CATALINAS was observed east
of PORT ARTHUR at the same time press reports indicated Russian occupation
of that port. Communications or identification were established but
again no threatening action was observed.

H. ATTACK DATA.

No attacks were made.

I. MINES.

Shooting up floating mines furnished the only excitement of the patrol.
A total of 66 were sighted and of these 42 were sunk and 16 were exploded.

Credit goes to our sharp shooting 20 mm. gunner ADCOCK, P.L., EM3c, who
accounted for 55 of the above. The 40 mm. was pressed into action when 20 mm.
ammunition began running low. It was not very effective.

Noteworthy is the fact that all but four of our mines were found above
36° N, an area where previous patrols in 1945 had disclosed only five (5)
mines. To avoid mines at night we took full advantage of a prevalent full
moon by stationing a special mine lookout and keeping our bow headed up to the
moon streak for illumination.

Floating mines were seen at the following positions:

(1) 31° 51' N 129° 05' E. (Sunk)
(2) 33° 03' N 124° 59' E
(3) 34° 09' N 124° 12' E
(4) 38° 15' N 123° 49' E (Sunk)
(5) 38° 17' N 123° 49' E (Exploded)
(6) 36° 34' N 123° 48' E (Sunk)
(7) 36° 21' N 123° 40' E (Sunk)
(8) 36° 19' N 123° 38' E (Sunk)
(9) 36° 28' N 123° 41' E (Sunk)
(10) 36° 27' N 123° 37' E
(11) 36° 31' N 123° 37' E

- 14 -

— page 222 —
SUBMARINE SQUADRON TWENTY SIX
Care of Fleet Post Office,
San Francisco, California,
5 September 1945

Serial: 0429

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

FIRST ENDORSEMENT to
U.S.S. SEA DEVIL (SS400)
Report of 5th War Patrol.

From: The Commander Submarine Squadron TWENTY SIX.
To : The Commander-in-Chief, U.S. Fleet.
Via : (1) The Commander Submarines, Southwest Pacific.
(2) The Commander-in-Chief, U.S. Pacific Fleet.

Subject: U.S.S. SEA DEVIL (SS400) - Report of Fifth War Patrol.

1. The Fifth War Patrol of the SEA DEVIL, under the command
of Lieutenant Commander C. F. McGivern, was conducted in the Yellow Sea
area. The patrol was of twenty-seven (27) days duration, of which sixteen
(16) days were spent in the area.

2. The SEA DEVIL arrived in the patrol area on the day
"cease firing" was ordered; consequently there was no opportunity to
inflict damage upon the enemy.

3. A total of sixty-six (66) mines were sighted, fifty-
eight (58) of which were destroyed. This speaks very well of the alertness
of the lookouts and the SEA DEVIL eliminated these serious menaces to
navigation.

4. The SEA DEVIL arrived from patrol in a good materiel
condition and will be given an availability of fourteen (14) days for
refit. This will be accomplished by the ship's force and supplemented
by the available Submarine Division Two Sixty-Two relief crew.

5. The Squadron Commander welcomes the officers and men
of the SEA DEVIL to this Command, and congratulates them upon their ex-
cellent war record.

[SIGNATURE: B. E. BACON, Jr.]

[HANDWRITTEN: X]
[HANDWRITTEN: 533]
[HANDWRITTEN: 20]
[HANDWRITTEN: 10 01322]

— page 223 —
FE24-71/A16-3 UNITED STATES NAVY 14/hr
Serial 0562-A
C-O-N-F-I-D-E-N-T-I-A-L 11 September 1945
[HANDWRITTEN: R-RAB]
SECOND ENDORSEMENT to: [HANDWRITTEN: (copy)]
USS SEA DEVIL Conf. Ltr. [HANDWRITTEN: 11-6-45]
A16-3 Serial 004 dated 3 [HANDWRITTEN: 1/11]
September 1945. Report
of Fifth War Patrol.

From: The Commander Submarines SOUTHWEST PACIFIC.
To: The Commander in Chief, UNITED STATES FLEET.
Via: The Commander SEVENTH FLEET.
Subject: U.S.S. SEA DEVIL (SS400) - Report of Fifth War
Patrol - Comment on.

1. The Fifth War Patrol of the SEA DEVIL under the command
of Lieutenant Commander C. F. McGIVERN, U.S. Navy, was terminated by
the order to cease offensive operations before she arrived in assigned
area.

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

3. The Force Commander welcomes the Commanding Officer,
Officers and Crew of the SEA DEVIL to Submarines, SOUTHWEST PACIFIC.

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

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

J. B. MILLER,
Flag Secretary.
[STAMP: FILMED] [STAMP: 10 01322] [HANDWRITTEN: 533]
[HANDWRITTEN: 21]

— page 224 —
UNITED STATES FLEET
COMMANDER SEVENTH FLEET

A16-3(F-3-2/egw)
Serial: [HANDWRITTEN: 0356]

[STAMP: D640]
[STAMP: REG. SHEET NO. 10 01322]

[STAMP: 10 OCT 1945]

CONFIDENTIAL

THIRD ENDORSEMENT to:
CO USS SEA DEVIL (SS400)
conf. ltr. serial 004 of
3 September 1945.

From: Commander SEVENTH Fleet.
To: Commander-in-Chief, U. S. Fleet.

Subject: U.S.S. SEA DEVIL (SS400), Report of War Patrol
Number FIVE (5).

1. Forwarded.

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

[HANDWRITTEN: x]
[HANDWRITTEN: no]

[UNCLEAR: 312 00 19 53 22]

— page 227 —
END OF REEL
JOB NO. [HANDWRITTEN: G-108]

||| 4.5   ||| 2.8   ||| 2.5
||| 5.0   ||| 3.2   ||| 2.2
||| 5.6   ||| 3.6   ||| 2.0
||| 6.3   ||| 4.0   ||| 1.8
||| 7.1
||| 8.0

||| 1.0
||| 1.1
||| 1.25
||| 1.4   ||| 1.6

THIS MICROFILM IS
THE PROPERTY OF
THE UNITED STATES
GOVERNMENT

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

MICROFILMED BY
NPPSO-NAVAL DISTRICT WASHINGTON
MICROFILM SECTION