U.S.S. S-15 (SS-120) — war patrol report SS-120_S-15.pdf

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START OF REEL
JOB NO. [HANDWRITTEN: G-108]
[HANDWRITTEN: AR-45-80]

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OPERATOR [HANDWRITTEN: M. Monroe]

DATE [HANDWRITTEN: 3/14/80]

THIS MICROFILM IS
THE PROPERTY OF
THE UNITED STATES
GOVERNMENT

[LOGO: DEPARTMENT OF DEFENSE seal with eagle and stars, text "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)

— page 2 —
[HANDWRITTEN: S-15 (93-120)]
[HANDWRITTEN: WORLD WAR II FILE]

[HANDWRITTEN: ALL MATERIAL ON THIS REEL IS DECLASSIFIED]

[HANDWRITTEN: FOR DECK LOG THROUGH 30 JUNE 1945 CONSVET]
[HANDWRITTEN: NATIONAL ARCHIVES WHICH HAS CUSTODY.]

— page 2 —
[HANDWRITTEN: S-15 (93-120)
WORLD WAR II FILE

ALL MATERIAL ON THIS REEL IS DECLASSIFIED

FOR DECK LOG THROUGH 30 JUNE 1945 CONSVET
NATIONAL ARCHIVES WHICH HAS CUSTODY.]

— page 3 —
S-12

S-15
(SS-120: dp. 876 (surf.), 1,092 (subm.); l. 231'; b.
21'10"; dr. 13'1"; s. 15 k. (surf.), 11 k. (subm.);
cpl. 38; a. 4 21" tt., 1 4"; cl. S-3)

S-15 (SS-120) was laid down on 13 December 1917
by the Lake Torpedo Boat Co., Bridgeport, Conn.;
launched on 8 March 1920; sponsored by Mrs. Simon
Lake; and commissioned on 15 January 1921, Lt.
Comdr. David R. Lee in command.
Attached to SubDiv 18, S-15 departed New London
on 31 May 1921, and sailed via the Panama Canal,
California, Hawaii, and Guam to the Philippines. She
arrived at Cavite, Luzon, on 1 December. In 1922, she
sailed from Cavite on 11 October, visited Hong Kong
from the 14th to the 28th, and returned to Cavite on 1
November. Sailing from Manila on 15 May 1923, S-15
visited Shanghai, Chefoo, and Chinwangtao before re-
turning via Woosung and Amoy to Cavite on 11 Sep-
tember. In the summer of 1924, she again visited China
and returned to Olongapo on 23 September.
Departing Cavite on 29 October, she arrived at Mare
Island, Calif., on 30 December. Remaining at Mare
Island in 1925 and 1926, she operated along the west
coast through 1927. From February 1928 into 1935, S-
15 served in the Panama Canal area, although she
visited Baltimore from 15 May to 5 June 1933. She
departed Coco Solo on 11 January 1935 for Philadel-
phia, where she was decommissioned on 26 April.
S-15 was recommissioned on 3 January 1941 at
Philadelphia. Following voyages to Bermuda, she oper-
ated at St. Thomas from 31 October to 9 December
1941; in the Panama Canal area from January into
December 1943; at Guantanamo from May through May 1944;
in the Panama Canal area from June through September
at Trinidad for the rest of the year; and at Guantana-
mo from January into March 1945.
S-15 departed Guantanamo on 23 March 1945 and
reported at New London for inactivation. She was
decommissioned on 11 June 1946 at Philadelphia and
struck from the Navy list. On 4 December that year,
she was sold for scrapping to the Potomac Shipwreck-
ing Co., Md.

— page 3 —
S-12

S-15
(SS-120: dp. 876 (surf.), 1,092 (subm.); l. 231'; b.
21'10"; dr. 13'1"; s. 15 k. (surf.), 11 k. (subm.);
cpl. 38; a. 4 21" tt., 1 4"; cl. S-3)

S-15 (SS-120) was laid down on 13 December 1917
by the Lake Torpedo Boat Co., Bridgeport, Conn.;
launched on 8 March 1920; sponsored by Mrs. Simon
Lake; and commissioned on 15 January 1921, Lt.
Comdr. David R. Lee in command.
Attached to SubDiv 18, S-15 departed New London
on 31 May 1921, and sailed via the Panama Canal,
California, Hawaii, and Guam to the Philippines. She
arrived at Cavite, Luzon, on 1 December. In 1922, she
sailed from Cavite on 11 October, visited Hong Kong
from the 14th to the 28th, and returned to Cavite on 1
November. Sailing from Manila on 15 May 1923, S-15
visited Shanghai, Chefoo, and Chinwangtao before re-
turning via Woosung and Amoy to Cavite on 11 Sep-
tember. In the summer of 1924, she again visited China
and returned to Olongapo on 23 September.
Departing Cavite on 29 October, she arrived at Mare
Island, Calif., on 30 December. Remaining at Mare
Island in 1925 and 1926, she operated along the west
coast through 1927. From February 1928 into 1935, S-
15 served in the Panama Canal area, although she
visited Baltimore from 15 May to 5 June 1933. She
departed Coco Solo on 11 January 1935 for Philadel-
phia, where she was decommissioned on 26 April.
S-15 was recommissioned on 3 January 1941 at
Philadelphia. Following voyages to Bermuda, she oper-
ated at St. Thomas from 31 October to 9 December
1941; in the Panama Canal area from January into
December 1943; at Guantanamo from May through May 1944;
in the Panama Canal area from June through September
at Trinidad for the rest of the year; and at Guantana-
mo from January into March 1945.
S-15 departed Guantanamo on 23 March 1945 and
reported at New London for inactivation. She was
decommissioned on 11 June 1946 at Philadelphia and
struck from the Navy list. On 4 December that year,
she was sold for scrapping to the Potomac Shipwreck-
ing Co., Md.

— page 4 —
Dictionary of
American Naval
Fighting Ships

VOLUME VI

Historical Sketches—Letters R through S
Appendices—Submarine Chasers (SC)
Eagle-Class Patrol Craft (PE)

WITH A FOREWORD BY
ADMIRAL JAMES L. HOLLOWAY III, United States Navy,
THE CHIEF OF NAVAL OPERATIONS

AND AN INTRODUCTION BY
VICE ADMIRAL EDWIN B. HOOPER, United States Navy, Retired,
THE DIRECTOR OF NAVAL HISTORY

NAVAL HISTORY DIVISION
DEPARTMENT OF THE NAVY
WASHINGTON: 1976

— page 4 —
Dictionary of

American Naval

Fighting Ships

VOLUME VI

Historical Sketches—Letters R through S
Appendices—Submarine Chasers (SC)
Eagle-Class Patrol Craft (PE)

WITH A FOREWORD BY

ADMIRAL JAMES L. HOLLOWAY III, United States Navy,
THE CHIEF OF NAVAL OPERATIONS

AND AN INTRODUCTION BY

VICE ADMIRAL EDWIN B. HOOPER, United States Navy, Retired,
THE DIRECTOR OF NAVAL HISTORY

NAVAL HISTORY DIVISION
DEPARTMENT OF THE NAVY
WASHINGTON: 1976

— page 5 —
File No.

[STAMP: RECEIVED]
[STAMP: OFFICE OF THE]
[STAMP: CHIEF OF NAVAL OPERATIONS]
[STAMP: 1942 FEB 1 AM 11 24]

SS120/A16-3
Serial 02
[STAMP: DECLASSIFIED]
C-O-N-F-I-D-E-N-T-I-A-L

U. S. S. S-15
January 17, 1942

From: Commanding Officer.
To : The Chief of Naval Operations.
  Commander in Chief, U.S. Atlantic Fleet.
  Commander Submarines, Atlantic Fleet.
  Commander Submarines, Off Shore Patrol Pacific.

Via : (1) Commander Submarine Division THIRTY TWO.
  (2) Commander Submarine Squadron THREE.

Enclosure: (A) War Diary, Period December 23, 1941 to
  January 8, 1942.

Subject: Commanding Officer War Diary.

1. Enclosure (A) is hereby submitted for the
first war patrol of the S-15.

[SIGNATURE: C. O. Triebel]
C. O. TRIEBEL.

[STAMP: MAR 1 1942]
[STAMP: OFFICE OF]
[STAMP: NAVAL INTELLIGENCE]
[STAMP: RECEIVED]

[STAMP: 40493 FILMED]

— page 5 —
[STAMP: RECEIVED]
[STAMP: ONI ROOM]
[STAMP: 1942 FEB 11 AM 11 24]

File No.

SS120/A16-3
Serial 02
DECLASSIFIED

From: Commanding Officer.
To : The Chief of Naval Operations.
Commander in Chief, U.S. Atlantic Fleet.
Commander Submarines, Atlantic Fleet.
Commander Submarines, Off Shore Patrol Pacific.

Via : (1) Commander Submarine Division THIRTY TWO.
(2) Commander Submarine Squadron THREE.

Enclosure: (A) War Diary, Period December 23, 1941 to
January 8, 1942.

Subject: Commanding Officer War Diary.

U. S. S. S-15
January 17, 1942

1. Enclosure (A) is hereby submitted for the
first war patrol of the S-15.

[SIGNATURE: C. O. TRIEBEL.]
C. O. TRIEBEL.

[STAMP: MAR 1 1942]
[STAMP: (Clock stamp with numbers 1-12 and an arrow pointing between 1 and 2)]
[STAMP: OFFICE OF
NAVAL INTELLIGENCE
RECEIVED]

[STAMP: 40493 FILMED]

— page 6 —
File No.

[STAMP: RECEIVED]
[STAMP: ON BOARD ROOM]
1942 FEB 1 AM 11 24
U. S. S. S-15

Commanding Officer, U. S. S. S-15

WAR DIARY

December 23, 1941 - January 8, 1942

Enclosure (A) to CO S-15
Confidential Serial 02
of January 17, 1942

[HANDWRITTEN: 2]

— page 6 —
File No.

[STAMP: RECEIVED
ON WATCH ROOM]
1942 FEB 1 AM 11 24
U. S. S. S-15

Commanding Officer, U. S. S. S-15

WAR DIARY

December 23, 1941 - January 8, 1942

Enclosure (A) to CO S-15
Confidential Serial 02
of January 17, 1942

[HANDWRITTEN: 2]

— page 7 —
File No. SS120/A16-3
U. S. S. S-15

C-O-N-F-I-D-E-N-T-I-A-L
COMMANDING OFFICER'S WAR DIARY

December 23, 1941

0600 - Underway from Submarine Base to transit Panama Canal.
1140 - Moored at Pedro Miguel. Delayed 5 1/2 hours. Repairs
to Port engine completed at 1400. Transit completed
at 1900. Moored Balboa. Ensign Webster with bow
plane gear assembly met ship at the dock.

December 24, 1941

1000 - Repairs to bow planes completed.
1500 - Underway for patrol area with escort vessel and S-45.
1730 - Dove to obtain trim. Could not get suction with Trim
Pump or High pressure pump. Surfaced after sunset
without obtaining trim. Left heavy oil slick. Pro-
bably because #2 main ballast is full of fuel.
- Night clear. No light after 2400.

December 25, 1941

0100 - Released escort vessel in latitude of Cape Mala. Sig-
nalled S-45 to proceed independently. Pumped oil
from magazine bilges, in attempting to pump from
Refrigerator Space well, trim line flooded back allow-
ing fuel oil to ruin much food stowed on deck.
0700 - Sighted patrol plane about 10 miles astern on northerly
course. Plane did not approach submarine.
0845 - Dove for trim.
1000 - Surfaced with good trim. Trim pump working fairly well,
still unable to obtain suction with high pressure pump.
Oil slick reduced.
1018 - Sighted patrol plane one point on starboard bow distance
about 7 miles on northerly course. Plane did not
approach submarine.
1045 - Electrical steering contactor in Conning Tower disinte-
grated. Shifted to hand steering and repaired contactor.
1300 - Started carrying 250 amp float on both engines.
1617 - Fire in starboard main motor panel. Secured float and
fire stopped. No extinguisher, blankets, or other
gear used. Three copper fingers badly burned.
1620 - We had 10 lbs pressure on forward trim tank and impulse
flasks charged to 135 lbs. Ordered #1 tube ready for
firing. There was no standby and torpedomen were not
warned before hand. The time to get tube ready for
firing was one minute. After 10 minutes outer door was

-1-
[HANDWRITTEN: 3]

— page 7 —
File No. SS120/A16-3
U. S. S. S-15

C-O-N-F-I-D-E-N-T-I-A-L
COMMANDING OFFICER'S WAR DIARY

December 23, 1941

0600 - Underway from Submarine Base to transit Panama Canal.
1140 - Moored at Pedro Miguel. Delayed 5 1/2 hours. Repairs
to Port engine completed at 1400. Transit completed
at 1900. Moored Balboa. Ensign Webster with bow
plane gear assembly met ship at the dock.

December 24, 1941

1000 - Repairs to bow planes completed.
1500 - Underway for patrol area with escort vessel and S-45.
1730 - Dove to obtain trim. Could not get suction with Trim
Pump or High pressure pump. Surfaced after sunset
without obtaining trim. Left heavy oil slick. Pro-
bably because #2 main ballast is full of fuel.
- Night clear. No light after 2400.

December 25, 1941

0100 - Released escort vessel in latitude of Cape Mala. Sig-
nalled S-45 to proceed independently. Pumped oil
from magazine bilges, in attempting to pump from
Refrigerator Space well, trim line flooded back allow-
ing fuel oil to ruin much food stowed on deck.
0700 - Sighted patrol plane about 10 miles astern on northerly
course. Plane did not approach submarine.
0845 - Dove for trim.
1000 - Surfaced with good trim. Trim pump working fairly well,
still unable to obtain suction with high pressure pump.
Oil slick reduced.
1018 - Sighted patrol plane one point on starboard bow distance
about 7 miles on northerly course. Plane did not
approach submarine.
1045 - Electrical steering contactor in Conning Tower disinte-
grated. Shifted to hand steering and repaired contactor.
1300 - Started carrying 250 amp float on both engines.
1617 - Fire in starboard main motor panel. Secured float and
fire stopped. No extinguisher, blankets, or other
gear used. Three copper fingers badly burned.
1620 - We had 10 lbs pressure on forward trim tank and impulse
flasks charged to 135 lbs. Ordered #1 tube ready for
firing. There was no standby and torpedomen were not
warned before hand. The time to get tube ready for
firing was one minute. After 10 minutes outer door was

-1-
[HANDWRITTEN: 3]

— page 8 —
File No. SS120/A16-3
CONFIDENTIAL

U. S. S. S-15

COMMANDING OFFICER'S WAR DIARY (CONT'D)

December 25th (Cont'd)

1620 - #1, tube drained and torpedo inspected. There
          was salt water in the tail, but afterbody was dry.
          #1 and 2 tubes have gyro angles of 36° right and
          left respectively set on them. #3 and 4 have 90° left and
          right respectively set on them. These are for a 25 knot
          ship crossing the bow or running down the side, high
          parallax. Firing bearings dead ahead and broad on
          the bow.
1800 - Stopped starboard engine one hour to effect repairs to
          fuel pump.

December 26, 1941

0545 - Sighted bright light one point on starboard bow. Dove.
          Got #1 torpedo tube ready for firing. Set course
          normal to bearing of light and remained submerged
          until after dawn. Surfaced at 0618. Nothing sighted
          or heard. Light was Jupiter setting.
0830 - Secured #1 torpedo tube and inspected torpedo. Tail,
          afterbody, and gyro pot were flooded. Cleaned
          thoroughly, repacked tail and reloaded.
1211 - Sighted patrol plane two points abaft port beam, dis-
          tance about 8 miles on north easterly course. Plane
          did not close submarine.
1426 - Dove on suspicion of smoke on starboard bow.
1516 - Nothing sighted. Surfaced.
1615 - Fire in starboard motor control panel. Engineer Officer
          and electricians were present testing circuits.
2000 - #1 and #2 tubes set 18° right and left for 15 knot ship.
          #3 and 4 still 90° right and left respectively, firing
          angles changed for 15 knots.

December 27, 1941

0859 - Sighted patrol plane broad on starboard beam, distance
          10 miles. Plane did not approach submarine.
1800 - Starboard main motor control circuit isolated. Starboard
          main motor in commission for manual operation, normal
          series.

December 28, 1941

1000 - Made trim dive. Greatest depth 70'. Upon surfacing.

-2-
[HANDWRITTEN: 4]

— page 8 —
File No. SS120/A16-3
CONFIDENTIAL

U. S. S. S-15

COMMANDING OFFICER'S WAR DIARY (CONT'D)

December 25th (Cont'd)

1620 - #1, tube drained and torpedo inspected. There
          was salt water in the tail, but afterbody was dry.
          #1 and 2 tubes have gyro angles of 36° right and
          left respectively set on them. #3 and 4 have 90° left and
          right respectively set on them. These are for a 25 knot
          ship crossing the bow or running down the side, high
          parallax. Firing bearings dead ahead and broad on
          the bow.
1800 - Stopped starboard engine one hour to effect repairs to
          fuel pump.

December 26, 1941

0545 - Sighted bright light one point on starboard bow. Dove.
          Got #1 torpedo tube ready for firing. Set course
          normal to bearing of light and remained submerged
          until after dawn. Surfaced at 0618. Nothing sighted
          or heard. Light was Jupiter setting.
0830 - Secured #1 torpedo tube and inspected torpedo. Tail,
          afterbody, and gyro pot were flooded. Cleaned
          thoroughly, repacked tail and reloaded.
1211 - Sighted patrol plane two points abaft port beam, dis-
          tance about 8 miles on north easterly course. Plane
          did not close submarine.
1426 - Dove on suspicion of smoke on starboard bow.
1516 - Nothing sighted. Surfaced.
1615 - Fire in starboard motor control panel. Engineer Officer
          and electricians were present testing circuits.
2000 - #1 and #2 tubes set 18° right and left for 15 knot ship.
          #3 and 4 still 90° right and left respectively, firing
          angles changed for 15 knots.

December 27, 1941

0859 - Sighted patrol plane broad on starboard beam, distance
          10 miles. Plane did not approach submarine.
1800 - Starboard main motor control circuit isolated. Starboard
          main motor in commission for manual operation, normal
          series.

December 28, 1941

1000 - Made trim dive. Greatest depth 70'. Upon surfacing.

-2-
[HANDWRITTEN: 4]

— page 9 —
File No.
SS120/A16-3
CONFIDENTIAL
U. S. S. S-15

COMMANDING OFFICER'S WAR DIARY (CONT'D)
December 28, 1941 (Cont'd)

1000 - Inspected 5 rounds ammunition which had been stowed in
       containers aft of bridge. 4 rounds were wet and showed
       signs of deterioration by giving off ether fumes. They
       were thrown over the side.
1300 - Arrived in patrol point. Commenced ZIG ZAG at 6.5 knots
       on various courses.
       Commenced inspecting crankcase pits of starboard main
       engine in electrical circuits. #1 periscope motor, detached lube oil
       circulating water pump motor, and hull opening
       indicator panel out of commission at various times.

December 29, 1941

0012 - Made quick dive. Outboard quick closing exhaust stuck
       open. Control room very poorly lighted for moon-
       light periscope attack. Surfaced.
0650 - Made quick dive and surfaced after daylight.
1000 - Completed inspection of starboard main crankcase.
       Lying to. Tightened 10 loose bolts, replaced 1
       broken bolt. 1 broken bolt could not be replaced.
       Found pieces of broken bearing metal from #1 [HANDWRITTEN: connecting]
       rod bearing in crankcase pit. Refitting 3 pieces of bearing
       shell with tap screws and iron cement. Opened up
       inspection plate for port quick closing exhaust topside
       and freed valve stem.
1220 - Underway again on port engine.
1650 - Burned out coil replaced. Starboard main motor control
       panel in commission.
2130 - Lying to charging batteries on port engine.

December 30, 1941

0445 - Secured charge. Underway at 2/3 speed on port engine.
0610 - Submerged until after daylight. Upon surfacing bow
       planes jammed in out position due to loose key in
       clutch. Clutch was freed and can be operated. Planes
       can be rigged in and out if caution is exercised to
       take up the slack by hand prior to power operation.
       At this time a loose contact was located in the back
       of the bow plane motor panel. This panel has been
       giving trouble for a number of months. The loose
       contact was in a hidden and very inaccessible position.

-3-
[HANDWRITTEN: 5]

— page 9 —
File No.
SS120/A16-3
CONFIDENTIAL

U. S. S. S-15

COMMANDING OFFICER'S WAR DIARY (CONT'D)
December 28, 1941 (Cont'd)

1000 - Inspected 5 rounds ammunition which had been stowed in
       containers aft of bridge. 4 rounds were wet and showed
       signs of deterioration by giving off ether fumes. They
       were thrown over the side.
1300 - Arrived in patrol point. Commenced ZIG ZAG at 6.5 knots
       on various courses.
       Commenced inspecting crankcase pits of starboard main
       engine in electrical circuits. #1 periscope motor, detached lube oil
       circuits. #1 periscope motor, detached lube oil
       pump motor, #1 circulating water pump motor, and hull opening
       indicator panel out of commission at various times.

December 29, 1941

0012 - Made quick dive. Outboard quick closing exhaust stuck
       open. Control room very poorly lighted for moon-
       light periscope attack. Surfaced.
0650 - Made quick dive and surfaced after daylight.
1000 - Completed inspection of starboard main crankcase.
       Lying to. Tightened 10 loose bolts, replaced 1
       broken bolt. 1 broken bolt could not be replaced.
       Found pieces of broken bearing metal from #1 connecting
rod    bearing in crankcase pit. Refitting 8 pieces of bearing
       shell with tap screws and iron cement. Opened up
       inspection plate for port quick closing exhaust topside
       freed valve stem.
1220 - Underway again on port engine.
1650 - Burned out coil replaced. Starboard main motor control
       panel in commission.
2130 - Lying to charging batteries on port engine.

December 30, 1941

0445 - Secured charge. Underway at 2/3 speed on port engine.
0510 - Submerged until after daylight. Upon surfacing bow
       planes jammed in out position due to loose key in
       clutch. Clutch was freed and can be operated. Planes
       can be rigged in and out if caution is exercised to
       take up the slack by hand prior to power operation.
       At this time a loose contact was located in the back
       of the bow plane motor panel. This panel has been
       giving trouble for a number of months. The loose
       contact was in a hidden and very inaccessible position.

-3-
[HANDWRITTEN: 5]

— page 10 —
File No.
SS120/A16-3
U. S. S. S-15

CONFIDE IAL

COMMANDING OFFICER'S WAR DIARY (CONT'D)

December 30, 1941 (cont'd)

0610 - The loose connection was caused by extremely care-
     less or deliberate failure in original assembly
     on recommissioning. Several other items of
     obvious improper electrical assembly in inaccessi-
     ble places have been uncovered during the past year.
0950 - Underway on port engine. Replaced bearing opera-
     ting satisfactorily. Commenced inspection of port
     engine crankcase.

December 31, 1941

0930 - Dove for one hour. Found layer between 60' and 80'
     where boat balanced easily for 15 minutes. This
     attitude probably could have been maintained in-
     definitely. The armature of #1 periscope motor
     grounded out. Motor has been removed and in case
     of failure of #2 periscope, #2 periscope motor can
     be shifted in about two hours.
1500 - Completed inspection of starboard engine crankcase.
     Tightened eighteen loose bolts, replaced two broken
     bolts, three broken bolts have not been replaced.
2018 - Started battery charge.
2200 - Reading over certain intelligence information on British
     and German submarines, the importance of being able
     to prosecute a conclusive night attack is obvious.
     For ten days out of the month, five days before and after
     a full moon, for a greater number of the night hours
     I would dive the S-15 and make a periscope attack.
     I believe in most cases there would be sufficient light
     in the periscope. If a surface attack was made during
     these times the submarine would see the enemy ship long
     before it was sighted. I am certain that the time the
     on the surface, would be sighted about the time the
     enemy had closed to 4000 yards, our maximum torpedo range.
     During the other twenty nights of the month a surface
     torpedo attack is definitely in order. To be success-
     ful, firing must take place within at least a minute
     after sighting the enemy ship. It is essential that the
     S-15 is equipped should be equipped should be
     the following:
     1st - A surface listening device. The S-15 does not
     have a brush microphone.
     2nd - Reliable loud communication from Officer-of-the-
     Deck to Torpedo Room. The S-15 has none. As a make
     shift the general alarm and ship's service telephone are used
[HANDWRITTEN: 6]

— page 10 —
File No.
SS120/A16-3
U. S. S. S-15

CONFIDE IAL

COMMANDING OFFICER'S WAR DIARY (CONT'D)

December 30, 1941 (cont'd)

0610 - The loose connection was caused by extremely care-
     less or deliberate failure in original assembly
     on recommissioning. Several other items of
     obvious improper electrical assembly in inaccessi-
     ble places have been uncovered during the past year.
0950 - Underway on port engine. Replaced bearing opera-
     ting satisfactorily. Commenced inspection of port
     engine crankcase.

December 31, 1941

0930 - Dove for one hour. Found layer between 60' and 80'
     where boat balanced easily for 15 minutes. This
     attitude probably could have been maintained in-
     definitely. The armature of #1 periscope motor
     grounded out. Motor has been removed and in case
     of failure of #2 periscope, #2 periscope motor can
     be shifted in about two hours.
1500 - Completed inspection of starboard engine crankcase.
     Tightened eighteen loose bolts, replaced two broken
     bolts, three broken bolts have not been replaced.
2018 - Started battery charge.
2200 - Reading over certain intelligence information on British
     and German submarines, the importance of being able
     to prosecute a conclusive night attack is obvious.
     For ten days out of the month, five days before and after
     a full moon, for a greater number of the night hours
     I would dive the S-15 and make a periscope attack.
     I believe in most cases there would be sufficient light
     in the periscope. If a surface attack was made during
     these times the submarine would see the enemy ship long
     before it was sighted. I am certain that the time the
     on the surface, would be sighted about the time the
     enemy had closed to 4000 yards, our maximum torpedo range.
     During the other twenty nights of the month a surface
     torpedo attack is definitely in order. To be success-
     ful, firing must take place within at least a minute
     after sighting the enemy ship. It is essential that the
     S-15 is equipped should be equipped should be
     the following:
     1st - A surface listening device. The S-15 does not
     have a brush microphone.
     2nd - Reliable loud communication from Officer-of-the-
     Deck to Torpedo Room. The S-15 has none. As a make
     shift the general alarm and ship's service telephone are used
[HANDWRITTEN: 6]

— page 11 —
File No. SS120/A15-3
CONFIDENTIAL
U. S. S. S-15

COMMANDING OFFICER'S WAR DIARY (CONT'D)
December 31, 1941 (Cont'd)

3rd - Torpedo offset angle computing device for
angle shots. Pre-arranged angles to meet the condi-
tions most likely to be encountered are now used.
4th - Torpedo tube torpedo gyro angle setting mech-
anism. It now takes a torpedoman one minute to set
an 90° of gyro angle on a torpedo after a minimum
minimum of twenty seconds crawling into the cramped
restricted area behind the tube.
5th - Torpedoes should be ready for firing. One
torpedo was made ready for firing on the S-15 and
left that way over night. When inspected in the
morning the after body had water in it and the gyro
pot was flooded. If fired this torpedo would very
probably have made a circular run and sunk the S-15.
At present the impulse tanks are kept fully charged,
10 pounds pressure is kept in forward trim, and outer
door are kept closed. In this condition the tubes
take 1 minute to make ready. Anything except a slow
maneuver would be long gone.
2400 - Tested all alarms. HAPPY NEW YEAR.

January 1, 1942

0325 - Secured battery charge.
1422 - Submerged. Circled at various speeds to obtain data
on turning rates. Checked against STB 1-40, the S-15
is a lowest turning submarine in commission except
AROO. Stern planes failed due to deterioration
of old chains in connection box in motor room.
Unable to handle boat satisfactorily with hand power
on planes due to excessive water and oil in bilges.
After Trim 4,500 pounds, had been pumped full
of the bilges during the day.
1545 - Surfaced.
1840 - Submerged. Tested stern planes which operated satis-
factorily. Surfaced.

January 2, 1942

0413 - OOD and lookouts heard noises which sounded like distant
diving alarm. One lookout thought he saw a light.
Dove and searched horizon in moonlight, nothing was
sighted. Submerged to 80' layer and assumed stationary
balance. Stationed listening watch.

-5-
[HANDWRITTEN: 7]

— page 11 —
File No. SS120/A15-3
CONFIDENTIAL
U. S. S. S-15

COMMANDING OFFICER'S WAR DIARY (CONT'D)

December 31, 1941 (Cont'd)

3rd - Torpedo offset angle computing device for
angle shots. Pre-arranged angles to meet the condi-
tions most likely to be encountered are now used.
4th - Torpedo tube torpedo gyro angle setting mech-
anism. It now takes a torpedoman one minute to set
an 90° of gyro angle on a torpedo after a minimum
minimum of twenty seconds crawling into the cramped
and restricted area behind the tube.
5th - Torpedoes should be ready for firing. One
torpedo was made ready for firing on the S-15 and
left that way over night. When inspected in the
morning the after body had water in it and the gyro
pot was flooded. If fired this torpedo would very
probably have made a circular run and sunk the S-15.
At present the impulse tanks are kept fully charged,
10 pounds pressure is kept in forward trim, and outer
doors are kept closed. In this condition the tubes
take 1 minute to make ready. Anything except a slow
maneuver would be long gone.
2400 - Tested all alarms. HAPPY NEW YEAR.

January 1, 1942

0325 - Secured battery charge.
1422 - Submerged. Circled at various speeds to obtain data
on turning rates. Checked against STB 1-40, the S-15
is the lowest turning submarine in commission except
to deterioration of old chains in connection box in motor room.
Unable to handle boat satisfactorily with hand power
on planes due to excessive water and oil in bilges.
After Trim 4,500 pounds, had been pumped full
of the bilges during the day.
1545 - Surfaced.
1840 - Submerged. Tested stern planes which operated satis-
factorily. Surfaced.

January 2, 1942

0413 - OOD and lookouts heard noises which sounded like distant
diving alarm. One lookout thought he saw a light.
Dove and searched horizon in moonlight, nothing was
sighted. Submerged to 80' layer and assumed stationary
balance. Stationed listening watch.

-5-
[HANDWRITTEN: 7]

— page 12 —
File No.
SS120/A16-3

CONFIDENTIAL

U. S. S. S-15

COMMANDING OFFICER'S WAR DIARY (CONT'D)

January 2, 1942 (Cont'd)

0730 - Surfaced.
1900 - Commenced battery charge.

January 3, 1942

0316 - Secured charge.
1500 - Made dive for training and trim.
2200 - In position 60 miles west of patrol point, set course,
       slow speed for point "CAST".

January 4, 1942

1014 - Sighted navy patrol plane. Plane signalled submarine
       and sent two letter signal "AM". Plane
       approached submarine within 1000 yards and then
       resumed course.
1200 - Provisions running low. Supply of flour and sugar ex-
       hausted. Increased speed to standard on both engines.

January 5, 1942

1400 - Normal lube tank dry. Stopped engines, went ahead on
       motors, shifted oil from reserve lube oil tank to
       main lube tank. Reserve lube tank had been filled
       in New London, Conn., on 15 September 1941 with 2300
       gallons of lube oil. Over one half, about 1500 gal-
       lons, had been displaced by salt water. There are
       numerous leaks in rivets entirely inaccessible under
       the engines which were easily noticed by the bubbling
       of the bilge water as the reserve lube oil was blown
       forward to the main lube oil tank.
1500 - Transfer of lube oil completed. Reserve lube oil tank
       was filled with water and trim dive made.
1730 - Surfaced. Ahead on port engine, charged on starboard
       engine.
1900 - Armature burned out in fuel oil transfer pump.

-6-

[HANDWRITTEN: 8]

— page 12 —
File No.
SS120/A16-3
CONFIDENTIAL

U. S. S. S-15

COMMANDING OFFICER'S WAR DIARY (CONT'D)

January 2, 1942 (Cont'd)

0730 - Surfaced.
1900 - Commenced battery charge.

January 3, 1942

0316 - Secured charge.
1500 - Made dive for training and trim.
2200 - In position 60 miles west of patrol point, set course,
       slow speed for point "CAST".

January 4, 1942

1014 - Sighted navy patrol plane. Plane signalled submarine
       and sent two letter signal "AM". Plane
       approached submarine within 1000 yards and then
       resumed course.
1200 - Provisions running low. Supply of flour and sugar ex-
       hausted. Increased speed to standard on both engines.

January 5, 1942

1400 - Normal lube tank dry. Stopped engines, went ahead on
       motors, shifted oil from reserve lube oil tank to
       main lube tank. Reserve lube tank had been filled
       in New London, Conn., on 15 September 1941 with 2300
       gallons of lube oil. Over one half, about 1500 gal-
       lons, had been displaced by salt water. There are
       numerous leaks in rivets entirely inaccessible under
       the engines which were easily noticed by the bubbling
       of the bilge water as the reserve lube oil was blown
       forward to the main lube oil tank.
1500 - Transfer of lube oil completed. Reserve lube oil tank
       was filled with water and trim dive made.
1730 - Surfaced. Ahead on port engine, checked on starboard
       engine.
1900 - Armature burned out in fuel oil transfer pump.

-6-

[HANDWRITTEN: 8]

— page 13 —
File No.
SS120/A16-3
CONFIDENTIAL

U. S. S. S-15

COMMANDING OFFICER'S WAR DIARY (CONT'D)

January 6, 1942

0030 - Secured charge on starboard engine. Ahead standard
     speed on both engines completing charge carrying
     250 amp float on both.
0812 - Secured float.
0831 - Shifted to hand steering. Rudder angle indicator out
     of commission. Old connection broke due to vibra-
     tion in motor room, causing short circuit and burn-
     ing of wire.
1030 - Rudder angle indicator in commission.
1050 - Sighted four motored Army bomber which approached and
     circled submarine closing to about 100 yards. Bomber
     resumed its course at 1105.
1110 - Sighted Navy patrol bomber. Circled submarine at about
     300 yards. Resumed its course at 1115.
2210 - Stopped starboard engine. Renewed exhaust valve.

January 7, 1942

0150 - Sighted light on horizon one point on starboard bow.
     Observed light was approaching submarine. Made
     quick dive. Passed small ship on opposite to parallel
     course, distance about 550 to 1000 yards abeam.
     Ship was burning all running lights and in addition
     showed occasional blinking light. From its silhou-
     ette in the moonlight observed in the periscope it
     appeared to be similar to a small Mexican gunboat
     about 150' long.
0315 - Surfaced. Resumed course.
0525 - Sighted dim light on horizon, one point forward of star-
     board beam. Light drew aft at the range of about 8
     miles. Did not dive.
0630 - Sighted ship dead ahead. Dove. Passed ship abeam on
     opposite to parallel course, range 2000 yards. Ship
     was medium sized tanker on course 300, speed 12.
0715 - Surfaced.
0720 - Experienced ten mile set to northward. Set southerly
     course to approach base course.
1545 - Started battery charge.
1830 - Sighted S-46, three points on starboard bow, distance
     8 miles, exchanged calls.
2030 - Secured charge.
2115 - Passed through Point "B", changed course for Point "A".

-7-
[HANDWRITTEN: 9]

— page 13 —
File No.
SS120/A16-3
CONFIDENTIAL

U. S. S. S-15

COMMANDING OFFICER'S WAR DIARY (CONT'D)

January 6, 1942

0030 - Secured charge on starboard engine. Ahead standard
     speed on both engines completing charge carrying
     250 amp float on both.
0812 - Secured float.
0831 - Shifted to hand steering. Rudder angle indicator out
     of commission. Old connection broke due to vibra-
     tion in motor room, causing short circuit and burn-
     ing of wire.
1030 - Rudder angle indicator in commission.
1050 - Sighted four motored Army bomber which approached and
     circled submarine closing to about 100 yards. Bomber
     resumed its course at 1105.
1110 - Sighted Navy patrol bomber. Circled submarine at about
     300 yards. Resumed its course at 1115.
2210 - Stopped starboard engine. Renewed exhaust valve.

January 7, 1942

0150 - Sighted light on horizon one point on starboard bow.
     Observed light was approaching submarine. Made
     quick dive. Passed small ship on opposite to parallel
     course, distance about 550 to 1000 yards abeam.
     Ship was burning all running lights and in addition
     showed occasional blinking light. From its silhou-
     ette in the moonlight observed in the periscope it
     appeared to be similar to a small Mexican gunboat
     about 150' long.
0315 - Surfaced. Resumed course.
0525 - Sighted dim light on horizon, one point forward of star-
     board beam. Light drew aft at the range of about 8
     miles. Did not dive.
0630 - Sighted ship dead ahead. Dove. Passed ship abeam on
     opposite to parallel course, range 2000 yards. Ship
     was medium sized tanker on course 300, speed 12.
0715 - Surfaced.
0720 - Experienced ten mile set to northward. Set southerly
     course to approach base course.
1545 - Started battery charge.
1830 - Sighted S-46, three points on starboard bow, distance
     8 miles, exchanged calls.
2030 - Secured charge.
2115 - Passed through Point "B", changed course for Point "A".

-7-
[HANDWRITTEN: 9]

— page 14 —
File No.
SS120/A16-3

U. S. S. S-15

CONFIDENTIAL

COMMANDING OFFICER'S WAR DIARY (CONT'D)
January 8, 1942
0016 - Sighted light of ship off Cape Mala. Maneuvered to
         the eastward to avoid.
0650 - Sighted escort vessel, eight miles distance, three
         points on port bow and joined company.
1100 - Set course for canal entrance.
1530 - Entered swept channel. Proceeded on range through
         mine field off Balboa Harbor.
1615 - Picked up canal pilot and proceeded through canal.
2400 - Moored to pier at Submarine Base, Coco Solo.

[SIGNATURE: C. O. Triebel]
C. O. TRIEBEL,
Lieutenant Commander, U.S.Navy,
Commanding.

-8-
[HANDWRITTEN: 10]

— page 14 —
File No.
SS120/A16-3

U. S. S. S-15

CONFIDENTIAL

COMMANDING OFFICER'S WAR DIARY (CONT'D)
January 8, 1942
0016 - Sighted light of ship off Cape Mala. Maneuvered to
         the eastward to avoid.
0650 - Sighted escort vessel, eight miles distance, three
         points on port bow and joined company.
1100 - Set course for canal entrance.
1530 - Entered swept channel. Proceeded on range through
         mine field off Balboa Harbor.
1615 - Picked up canal pilot and proceeded through canal.
2400 - Moored to pier at Submarine Base, Coco Solo.

[SIGNATURE: C. O. Triebel]
C. O. TRIEBEL,
Lieutenant Commander, U.S.Navy,
Commanding.

-8-
[HANDWRITTEN: 10]

— page 15 —
[HANDWRITTEN: 76 E 3]
[STAMP: 1942 FEB 11 24]
[STAMP: ONI SR 47]
[STAMP: MAR 1 1942]

A12-1 (09)
SUBMARINE DIVISION THIRTY-TWO
U. S. S. S-11 , Flagship
c/o Postmaster, New York, New York

1st Endorsement to
S-15 ltr. A16-3(02)
of 1/17/42.
[STAMP: CONFIDENTIAL]

19 January 1942.
[STAMP: (circular date stamp with clock hands, showing 11-12 o'clock, and date 19 JAN 1942)]
[STAMP: OFFICE OF NAVAL INTELLIGENCE]
[STAMP: RECEIVED]

From: Commander Submarine Division Thirty-Two.
To: Chief of Naval Operations.
Commander-in-Chief, U.S. Atlantic Fleet.
Commander Submarines, Atlantic Fleet.

SUBJECT: USS S-15 War Diary, period 23 December 1941
to 8 January 1942.

1. Forwarded. The S-15 arrived from St.Thomas on 14
December after a period of three months without benefit of
tender or base upkeep facilities. She was hurriedly made ready
for this patrol but admittedly should have had a longer upkeep
period. The urgency of the patrol was such that longer time
could not be given her in which to correct many known deficiencies.
Her casualties were numerous but they were ably handled by the
ship's force. Immediately upon her return from patrol she was
placed in overhaul at the Submarine Base, Coco Solo, to be
followed on 21 January by regular overhaul at Mount Hope shops
in Cristobal.

2. The practice of presetting the gyro angles of tor-
pedoes for expected conditions is one that will not find many
submarine captains in agreement. It is a problem that I believe
each Commanding Officer should work out for himself. If the
control is made simpler to the individual captain by pre-setting,
he should by all means pre-set.

[STAMP: RECEIVED & C FILES]
[SIGNATURE: J. B. LONGSTAFF]
J. B. LONGSTAFF.

Copy to:
Comsubron 3.
[STAMP: JAN 31 1942] [STAMP: FILMED]
[HANDWRITTEN: 16-E-3]
File No. (SO) [HANDWRITTEN: A12-1/SS120]
Doc. No.
Copy No. [HANDWRITTEN: 3/ ]
PRN [HANDWRITTEN: 3/ ]

//

— page 15 —
[HANDWRITTEN: 76 E 3]
[STAMP: 1942 FEB 11 24]
[STAMP: ONI SR 47]
[STAMP: MAR 1 1942]

A12-1 (09)
SUBMARINE DIVISION THIRTY-TWO
U. S. S. S-11 , Flagship
c/o Postmaster, New York, New York

1st Endorsement to
S-15 ltr. A16-3(02)
of 1/17/42.
[STAMP: CONFIDENTIAL]

19 January 1942.
[STAMP: (circular date stamp with clock hands, showing 11-12 o'clock, and date 19 JAN 1942)]
[STAMP: OFFICE OF NAVAL INTELLIGENCE]
[STAMP: RECEIVED]

From: Commander Submarine Division Thirty-Two.
To: Chief of Naval Operations.
Commander-in-Chief, U.S. Atlantic Fleet.
Commander Submarines, Atlantic Fleet.

SUBJECT: USS S-15 War Diary, period 23 December 1941
to 8 January 1942.

1. Forwarded. The S-15 arrived from St.Thomas on 14
December after a period of three months without benefit of
tender or base upkeep facilities. She was hurriedly made ready
for this patrol but admittedly should have had a longer upkeep
period. The urgency of the patrol was such that longer time
could not be given her in which to correct many known deficiencies.
Her casualties were numerous but they were ably handled by the
ship's force. Immediately upon her return from patrol she was
placed in overhaul at the Submarine Base, Coco Solo, to be
followed on 21 January by regular overhaul at Mount Hope shops
in Cristobal.

2. The practice of presetting the gyro angles of tor-
pedoes for expected conditions is one that will not find many
submarine captains in agreement. It is a problem that I believe
each Commanding Officer should work out for himself. If the
control is made simpler to the individual captain by pre-setting,
he should by all means pre-set.

[STAMP: RECEIVED & C FILES]
[SIGNATURE: J. B. LONGSTAFF]
J. B. LONGSTAFF.

Copy to:
Comsubron 3.
[STAMP: JAN 31 1942] [STAMP: FILMED]
[HANDWRITTEN: 16-E-3]
File No. (SO) [HANDWRITTEN: A12-1/SS120]
Doc. No.
Copy No. [HANDWRITTEN: 3/ ]
PRN [HANDWRITTEN: 3/ ]

//

— page 16 —
[HANDWRITTEN: 1st copy]

SS120/A16-3
Serial (05)
CONFIDENTIAL
[STAMP: DECLASSIFIED]

U.S.S. S-15
c/o Postmaster,
New York, N. Y.,
21 June 1942

From: Commanding Officer.
To : The Commander Submarines, Atlantic Fleet.
Via : Commander Submarine Division THIRTY TWO.

Subject: Patrol Report.

Reference: (a) Submarines, Atlantic Fleet Confidential
Letter No. 6CL-42.

U.S.S. S-15 - REPORT OF SECOND WAR PATROL.

PERIOD FROM 31 MAY TO 20 JUNE.

AREA: Panama Sea Frontier, Pacific Sector.

OPERATION ORDER: Panama Sea Frontier Force,
Offshore Patrol, Pacific 16-42.

1. The patrol was quiet. Nothing enroute to, or
on station sighted except friendly planes listed. Nothing sighted
returning until after entering Panama Bay.

2. Weather was in general excellent. Overcast skys
and heavy squalls were encountered occassionally.

3. -

4. None.

5. -

6.
| DATE | DESCRIPTION | DID PLANE |
| | | INVESTIGATE SUBMARINE |
| 5 June | U.S. Army Bomber | Yes |
| 8 June | U.S. Army Bomber | No |
| 10 June | U.S. Army Bomber | No |
| 11 June | U.S. Navy Patrol Plane | Yes |
| 13 June | U.S. Navy Patrol Plane | Yes |
| 16 June | U.S. Navy Patrol Plane | No |
| 18 June | U.S. Army Bomber | Yes |

7. -

8. - DECLASSIFIED ART. 0445, OPNAVINST 5510.1C
BY [HANDWRITTEN: OP-09B9C] DATE [HANDWRITTEN: 6/1/72]
[STAMP: DECLASSIFIED]

[HANDWRITTEN: FILMED]
[HANDWRITTEN: 136444]
- 1 -

— page 16 —
[HANDWRITTEN: 1st copy]

SS120/A16-3
Serial (05)
CONFIDENTIAL
[STAMP: DECLASSIFIED]

U.S.S. S-15
c/o Postmaster,
New York, N. Y.,
21 June 1942

From: Commanding Officer.
To : The Commander Submarines, Atlantic Fleet.
Via : Commander Submarine Division THIRTY TWO.

Subject: Patrol Report.

Reference: (a) Submarines, Atlantic Fleet Confidential
Letter No. 6CL-42.

U.S.S. S-15 - REPORT OF SECOND WAR PATROL.

PERIOD FROM 31 MAY TO 20 JUNE.

AREA: Panama Sea Frontier, Pacific Sector.

OPERATION ORDER: Panama Sea Frontier Force,
Offshore Patrol, Pacific 16-42.

1. The patrol was quiet. Nothing enroute to, or
on station sighted except friendly planes listed. Nothing sighted
returning until after entering Panama Bay.

2. Weather was in general excellent. Overcast skys
and heavy squalls were encountered occassionally.

3. -

4. None.

5. -

6.
| DATE | DESCRIPTION | DID PLANE |
| | | INVESTIGATE SUBMARINE |
| 5 June | U.S. Army Bomber | Yes |
| 8 June | U.S. Army Bomber | No |
| 10 June | U.S. Army Bomber | No |
| 11 June | U.S. Navy Patrol Plane | Yes |
| 13 June | U.S. Navy Patrol Plane | Yes |
| 16 June | U.S. Navy Patrol Plane | No |
| 18 June | U.S. Army Bomber | Yes |

7. -

8. - DECLASSIFIED ART. 0445, OPNAVINST 5510.1C
BY [HANDWRITTEN: OP-09B9C] DATE [HANDWRITTEN: 6/1/72]
[STAMP: DECLASSIFIED]

[HANDWRITTEN: FILMED]
[HANDWRITTEN: 136444]
- 1 -

— page 19 —
CONFIDENTIAL

A12-1 (050)

1st Endorsement to
S-15 ltr. A16-3 (05)
of 6/21/42.

From:
To :
Via :
SUBJECT:
                                                SUBMARINE DIVISION THIRTY-TWO
                                                U.S.S. S-11 Flagship
                                                c/o Postmaster, New York, New York
                                                22 June 1942

                                                Commander Submarine Division Thrity-Two.
                                                Commander Submarines, Atlantic Fleet.
                                                Commander Submarine Squadron Three.

                                                USS S-15 - Report of Second War Patrol.

        1.      Forwarded. The patrol was uneventful, no contact
having been made with the enemy.

        2.      Including a training period, this ship was away from
the base for a period of 38 days. The S-15 was in good material
condition upon return to the base, having suffered no serious
casualties. The crew experienced some fatigue toward the latter
part of the patrol but were cheerful and in good spirits upon
return to port.

        3.      One case of threatened appendicitis was encountered
and was well handled.

                                                S. G. BARCHET

Copy to:

Comsubsoffshorepatpac
S-15

— page 19 —
CONFIDENTIAL

A12-1 (050)

1st Endorsement to
S-15 ltr. A16-3 (05)
of 6/21/42.

From:
To :
Via :
SUBJECT:
                                                SUBMARINE DIVISION THIRTY-TWO
                                                U.S.S. S-11 Flagship
                                                c/o Postmaster, New York, New York
                                                22 June 1942

                                                Commander Submarine Division Thrity-Two.
                                                Commander Submarines, Atlantic Fleet.
                                                Commander Submarine Squadron Three.

                                                USS S-15 - Report of Second War Patrol.

        1.      Forwarded. The patrol was uneventful, no contact
having been made with the enemy.

        2.      Including a training period, this ship was away from
the base for a period of 38 days. The S-15 was in good material
condition upon return to the base, having suffered no serious
casualties. The crew experienced some fatigue toward the latter
part of the patrol but were cheerful and in good spirits upon
return to port.

        3.      One case of threatened appendicitis was encountered
and was well handled.

                                                S. G. BARCHET

Copy to:

Comsubsoffshorepatpac
S-15

— page 20 —
[STAMP: 8 01310]

FF4-3/A16(1)
Serial 0144
CONFIDENTIAL

UNITED STATES ATLANTIC FLEET
SUBMARINES
SUBMARINE SQUADRON THREE
U.S.S. S-13 (Flagship)

June 25, 1942

2nd Endorsement to
S-15 ltr. A16-3 (05)
of 6-21-42.

From: The Commander Submarine Squadron Three.
To : The Commander Submarines, Atlantic Fleet.

SUBJECT: U.S.S. S-15 Report of Second War Patrol.

1. Radio reception is frequently poor in this area
owing to atmospheric conditions. It is considered that use
of NBA primary broadcast on 24 kcs will overcome the difficulties
with NAA broadcasts. Radio San Juan, at approximately the same
interference on 4155 kcs and some on 8310. Inasmuch as frequencies
above the limit of the TCE transmitters (9050 kc) are not available
the only possible solution would seem to be the stationing of a
relay ship about half way to the patrol area. This is not
practicable as a permanent station.

2. The limit of patrol of these vessels depends on
the type of patrol conducted. Thirty-five days is considered
to be the limit under favorable conditions.

[SIGNATURE: T. J. DOYLE]

Copy to:
CSD 31
CSD 32
S-15

— page 20 —
[STAMP: 8 01310]

FF4-3/A16(1)
Serial 0144

CONFIDENTIAL

2nd Endorsement to
S-15 ltr. A16-3 (05)
of 6-21-42.

From: The Commander Submarine Squadron Three.
To : The Commander Submarines, Atlantic Fleet.

SUBJECT: U.S.S. S-15 Report of Second War Patrol.

UNITED STATES ATLANTIC FLEET
SUBMARINES
SUBMARINE SQUADRON THREE
U.S.S. S-13 (Flagship)

June 25, 1942

1. Radio reception is frequently poor in this area
owing to atmospheric conditions. It is considered that use
of NBA primary broadcast on 24 kcs will overcome the difficulties
with NAA broadcasts. Radio San Juan, at approximately the same
interference on 4155 kcs and some on 8310. Inasmuch as frequencies
above the limit of the TCE transmitters (9050 kc) are not available
the only possible solution would seem to be the stationing of a
relay ship about half way to the patrol area. This is not
practicable as a permanent station.

2. The limit of patrol of these vessels depends on
the type of patrol conducted. Thirty-five days is considered
to be the limit under favorable conditions.

T. J. DOYLE

Copy to:
CSD 31
CSD 32
S-15

— page 21 —
[HANDWRITTEN: 1st copy]
SS120/A16-3
Serial (06)
[STAMP: DECLASSIFIED]
U.S.S. S-15
c/o Postmaster,
New York, New York,
July 10, 1942.

From: The Commanding Officer.
To : The Commander Submarines, Atlantic Fleet.
Via : The Commander Submarine Division THIRTY-TWO.

Subject: Patrol Report.

Reference: (a) Submarines, Atlantic Fleet Confidential
Letter No. 6CL-42.

U. S. S. S-15 - REPORT OF THIRD WAR PATROL.

PERIOD FROM 3 JULY TO 9 JULY.

AREA: - CARRIBEAN.

OPERATION ORDER: CSS3 207-42.

1. Nothing of interest was encountered on patrol.
Submerged patrol was made at 85 feet with periodic periscope
observations. Rough sea and limitation of battery precluded
patroling continuously at periscope depth during daylight.

2. Weather was fair. Moderate seas with heavy swell
at all times.

3. After a good fix at 1930 5 July a course was set
to pick up RONCADOR CAY light on the starboard bow at about 0200,
6 July. The light was picked up at 0300 on the port bow. This
indicates a strong southeasterly set.

4. -
5. -
6. -
7. -
8. -
9. The old wiring on the ship was affected by the
high humidity. Electricians were continuously at work clearing
grounds.

-1-
[STAMP: 136445 FILMED] [STAMP: DECLASSIFIED]
CLASSIFIED-ART. 0445, OPNAVINST 5510.1C
BY [HANDWRITTEN: OP-09B9C] DATE [HANDWRITTEN: 6/1/22]

— page 21 —
SS120/A16-3
Serial (06)
[STAMP: DECLASSIFIED]
U.S.S. S-15
c/o Postmaster,
New York, New York,
July 10, 1942.
[HANDWRITTEN: 1st copy]

From: The Commanding Officer.
To : The Commander Submarines, Atlantic Fleet.
Via : The Commander Submarine Division THIRTY-TWO.

Subject: Patrol Report.

Reference: (a) Submarines, Atlantic Fleet Confidential
Letter No. 6CL-42.

U. S. S. S-15 - REPORT OF THIRD WAR PATROL.
PERIOD FROM 3 JULY TO 9 JULY.
AREA: - CARRIBEAN.
OPERATION ORDER: CSS3 207-42.

1. Nothing of interest was encountered on patrol.
Submerged patrol was made at 85 feet with periodic periscope
observations. Rough sea and limitation of battery precluded
patroling continuously at periscope depth during daylight.

2. Weather was fair. Moderate seas with heavy swell
at all times.

3. After a good fix at 1930 5 July a course was set
to pick up RONCADOR CAY light on the starboard bow at about 0200,
6 July. The light was picked up at 0300 on the port bow. This
indicates a strong southeasterly set.

4. - -
5. - -
6. - -
7. - -
8. - -

9. The old wiring on the ship was affected by the
high humidity. Electricians were continuously at work clearing
grounds.

-1-
[STAMP: 136445 FILMED]
[STAMP: DECLASSIFIED]
[STAMP: CLASSIFIED-ART. 0445, OPNAVINST 5510.1C]
BY [HANDWRITTEN: OP-09B9C] DATE [HANDWRITTEN: 6/1/22]

— page 23 —
A12-1/(060)

SUBMARINE DIVISION THIRTY-TWO
U.S.S. S-11, Flagship
c/o Postmaster, New York, New York
11 July 1942.

1st Endorsement to
S-15 ltr. A16-3 (06)
of 7/10/42.

From: Commander Submarine Division Thirty-Two.
To : Commander Submarines, Atlantic Fleet.
Via : Commander Submarine Squadron Three.

SUBJECT: USS S-15 - Report of Third War Patrol.

1. Forwarded. The patrol was without incident as no
enemy forces were encountered.

2. It is noted that radio reception has improved since
using the facilities of NBA.

3. The recommendation contained in paragraph eleven of
patrol report is considered an excellent idea for this type of
patrol because the comfort of the crew is increased. However,
provisioning in the proposed manner would preclude a change in
operations during the patrol thereby preventing the Division or
Squadron Commander from taking full advantage of the character-
istics of the ship. Therefore, the Division Commander does not
concur in the recommendation.

S. G. BARCHET.

Copy to:
Compaseafron
Comsubspacrsapafron
S-15

— page 23 —
A12-1/(060)

                                                SUBMARINE DIVISION THIRTY-TWO
                                                      U.S.S. S-11, Flagship
                                                c/o Postmaster, New York, New York
                                                            11 July 1942.

1st Endorsement to
S-15 ltr. A16-3 (06)
of 7/10/42.

From:                                           Commander Submarine Division Thirty-Two.
To :                                            Commander Submarines, Atlantic Fleet.
Via :                                           Commander Submarine Squadron Three.

SUBJECT:                                        USS S-15 - Report of Third War Patrol.

                                                1. Forwarded. The patrol was without incident as no
enemy forces were encountered.

                                                2. It is noted that radio reception has improved since
using the facilities of NBA.

                                                3. The recommendation contained in paragraph eleven of
patrol report is considered an excellent idea for this type of
patrol because the comfort of the crew is increased. However,
provisioning in the proposed manner would preclude a change in
operations during the patrol thereby preventing the Division or
Squadron Commander from taking full advantage of the character-
istics of the ship. Therefore, the Division Commander does not
concur in the recommendation.

                                                S. G. BARCHET.

Copy to:
Compaseafron
Comsubspacrsapafron
S-15

— page 24 —
[HANDWRITTEN: 8 01310]

FF4-3/A16(1)
Serial 0172

2nd Endorsement to
S15 ltr. A16-3 (06)
of 7-10-42.

UNITED STATES ATLANTIC FLEET
SUBMARINES
SUBMARINE SQUADRON THREE
U.S.S. S-13 (Flagship)

Coco Solo, Canal Zone,
July 14, 1942.

From:         Commander Submarine Squadron Three.
To   :         Commander Submarines, Atlantic Fleet.

Subject:      U.S.S. S-15 - Report of Third War Patrol.

1.            Forwarded. The recommendations that submarines
on this patrol be permitted to carry other than normal provision
requirements is not concurred in. Submarines must be available
for unexpected extension of length of patrol. The rigors of this
particular assignment do not warrant a variation.

T. J. DOYLE

Copy to:
Compaseafron
CSD-31
CSD-32
S-15

[HANDWRITTEN: 4]

— page 24 —
[STAMP: 8 01310]

FF4-3/A16(1)
Serial 0172

2nd Endorsement to
S15 ltr. A16-3 (06)
of 7-10-42.

From:
To :
Subject:

UNITED STATES ATLANTIC FLEET
SUBMARINES
SUBMARINE SQUADRON THREE
U.S.S. S-13 (Flagship)

Coco Solo, Canal Zone,
July 14, 1942.

Commander Submarine Squadron Three.
Commander Submarines, Atlantic Fleet.
U.S.S. S-15 - Report of Third War Patrol.

1. Forwarded. The recommendations that submarines
on this patrol be permitted to carry other than normal provision
requirements is not concurred in. Submarines must be available
for unexpected extension of length of patrol. The rigors of this
particular assignment do not warrant a variation.

T. J. DOYLE

Copy to:
Compaseafron
CSD-31
CSD-32
S-15

[HANDWRITTEN: 4]

— page 25 —
END OF REEL
JOB NO. [HANDWRITTEN: G-108]
[HANDWRITTEN: AR-45-80]
|||||1.0
|||||1.1
|||||1.25 |||||1.4 |||||1.6
|||||2.8 |||||2.5
|||||3.2 |||||2.2
|||||3.6 |||||2.0
|||||4.0 |||||1.8
THIS MICROFILM IS
THE PROPERTY OF
THE UNITED STATES
GOVERNMENT
[SEAL: DEPARTMENT OF DEFENSE, UNITED STATES OF AMERICA]
MICROFILMED BY
NPPSO-NAVAL DISTRICT WASHINGTON
MICROFILM SECTION

— page 25 —
END OF REEL
JOB NO. [HANDWRITTEN: G-108]
[HANDWRITTEN: AR-45-80]

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

||||| 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

THIS MICROFILM IS
THE PROPERTY OF
THE UNITED STATES
GOVERNMENT

[IMAGE: Department of Defense seal]

MICROFILMED BY
NPPSO-NAVAL DISTRICT WASHINGTON
MICROFILM SECTION