U.S.S. SARGO (SS-188) — war patrol report SS-188_SARGO_Part1.pdf

— page 6 —
1. USS SARGO (SS-188)
2. SARGO departed Midway Island, 1 August 1943, to conduct her eighth war patrol north of Truk and in waters of the Mariana Islands. During this patrol, 25 days were spent on station without attack on the enemy and SARGO returned to Pearl Harbor, 15 September 1943, for refit by HOLLAND. Her refit lasted three weeks, during which time Lieutenant Commander Carmick was relieved of command by Commander F. W. Garnett, USN.

On her ninth war patrol, SARGO departed Pearl Harbor, 15 October 1943. After a stop for Fuel and Fresh water at Midway Island, she steamed to Arros around Formosa. On 9 November 1943, she sank the cargo ship TNG MARU of 2,968 tons (21-38'N; 131-19'E), with torpedoes and gunfire. Two days later, 11 November, she torpedoed and sank the passenger-cargo ship KOSEI MARU of 3,551 tons, (27-26'N; 130-31'E). Afterwards she picked up a Japanese soldier, a survivor from the war, and a Japanese soldier

— page 7 —
6 Stars/SUBMARINE WAR PATROLS - PACIFIC:

27 Aug 1942 - 25 Oct 1942
27 May 1943 - 9 Jul 1943
15 Oct 1943 - 9 Dec 1943
26 Jan 1944 - 12 Mar 1944
7 Apr 1944 - 26 May 1944
13 Oct 1944 - 7 Dec 1944

PHILIPPINE REPUBLIC PRESIDENTIAL UNIT CITATION BADGE:

8 Dec 1941 - 25 Jan 1942; 8 Feb 1942 - 22 Feb 1942

STATISTICS

LENGTH: 310 feet, 1 inch
BEAM: 26 feet, 10 inches
DRAFT: 16 feet, 8 inches
DISPLEMENT: Standard - 1450 tons
Submerged - 2350 tons
DESIGN SPEED: Surface - 20 knots
Submerged - 8.75 knots
COMPLEMENT: 5 officer
50 enlisted
ARRANGEMENT: 8, 21-inch torpedo tubes
1, three-inch .50 caliber gun
2, .50 caliber gun
2, .30 caliber gun
24 torpedoes

# # # # # # #

Recompiled 27 SEPT 1957
Postencll 27 SEPT 1957 (Vn)

— page 8 —
1. The Commanding Officer.
To: The Commander Submarines, Asiatic Fleet.
Subject: U.S.S. SARGO War Patrol Number One - report of.

Enclosure:
(A) War Patrol Summary.
(B) War Patrol Report.
(C) Track Chart.

The report of war patrol number one of the U.S.S. SARGO, enclosures (A), (B) and (C) is transmitted herewith.

Signed: [Signature]
Date: 29-09-1942

FINALIZED
(2) 40204

— page 11 —
U.S.S. SARGO
:  SS188-

:  U.S.S. SARGO
:  REPORT OF WAR BATTLE NUMBER ONE

:  PERIOD
:  DECEMBER 8, 1941 to JANUARY 25, 1942

:  AREA
:  OFF FRENCH INDO-CHINA COAST
:  AND
:  MAXASAR STRAIT

:  ZONE TIME
:  MIDNIGHT

:  LINES
:  [Text here]

— page 12 —
12-8-41 1425 Underway from alongside U.S.S. HOLLAND proceeding to Mariveles Bay, P.I. in accordance with verbal instructions from Comm.nder Submarines, Asiatic Fleet.

: 12-8-41 1657 Anchored in Mariveles Bay, P.I.

: 12-8-41 1755 Underway from Mariveles Bay, P.I. Standing out of counter bottom line fields.

: 12-8-41 1823 Took departure, La Monja light bearing 000° true, distance 4 miles, and set course to 25° true, speed 17 knots.

: 12-8-41 2035 Cabra Island light bearing 344° true, 16 miles distance, changed course to 200° true. Proceeding to assigned war patrol station via Palawan Passage.

: 12-9-41 0447 Submerged.

: 12-9-41 1758 Surfaced (10 minutes) for star sights.

: 12-9-41 1853 Surfaced. Submerged time 13 hours and 56 minutes. Proceeding on surface at 15.5 knots. Entered Palawan Passage.

: 12-10-41 0209 Sighted an unidentified darkened ship. Data as follows:
   - Course: 200°T.
   - Speed: 18 knots.
   - Range: 10,000 yards.
   - Position - Latitude 10°-14'N.
   - Longitude 117°-4'E.
   - Increased speed to 17 knots in order to obtain position ahead by sunrises.

: 12-10-41 0518 Submerged.

: 12-10-41 0610 Sighted unidentified merchant ship. Data as follows:
   - Course 230°T.

— page 13 —
12-10-41 0610 Speed - 15.5 knots, Range - 10,000 yards, Angle on bow - 65° port, Position - Latitude 9°-28'N, Longitude 117°-17'E, No attack made, since merchant ship could not be identified as enemy. Vessel was of about 5,000 tons, one stack, two masts, grey green paint.

12-10-41 1700 Obtained navigational fix on mountain peaks of southern Palawan.

12-10-41 1900 Surfaced. Time submerged 13 hours and 42 minutes.

12-11-41 0001 Cleared Palawan Passage.

12-11-41 0508 Submerged.

12-11-41 1820 Surfaced (12 minutes) for star sights.

12-11-41 1916 Surfaced. Time submerged 13 hours and 56 minutes. Received official notification of declaration of war against the United States of America by Germany and Italy. Commander-in-Chief, Asiatic Fleet proclamation to neutral shipping received.

12-12-41 0510 Submerged.

12-12-41 1935 Surfaced. Time submerged 14 hours and 23 minutes.

12-13-41 0528 Submerged.

12-13-41 1937 Surfaced. Time submerged 14 hours and 8 minutes. Received CSAT despatch 131128, paraphrased as follows: "Eastern boundary of your patrol area cancelled. A Japanese expeditionary force in South China Sea is moving on a southerly course and is well off shore."

— page 14 —
12-13-41 2330 Entered assigned patrol area. Distance to area from departure point 965 miles.

12-14-41 0553 Submerged.

12-14-41 0700 Slighted three Japanese Cruisers of ATAO type.

Data as follows:
Course - 175°T.
Speed - 15 knots.
Range - 20,000 yards.
Angle on bow - 75° starboard.
Position - Latitude 7°-30'N.
Longitude 109°-01'E.

No aircraft or destroyer screens observed. Unable to attack; moved to close the track in hopes of intercepting any forces in the rear of the cruisers.

12-14-41 1815 Sighted a Japanese merchant ship.

12-14-41 1888 Sunset.

12-14-41 1857 Fired on torpedo from #5 torpedo tube at merchant ship. At 16 seconds from time firing key was closed an explosion was heard, indicating a premature functioning of Mark VI exploded mechanism. Merchantman turned sharply away and was lost in the darkness.

Data as follows:
Knew course - 140°T.
Range speed - 12 knots.
Firing range - 1,100 yards.
Gyro angle - 0°.
Track angle - 90° port.
Point of aim - Ambushes.
Number of torpedoes fired - one.
Method of firing - periscope.
Spread - None.
Position - Latitude 8°-05'N.
Longitude 109°-06'E.

Depth Setting - 15 feet.
Hits - None.
Results - None.

— page 15 —
12-14-41 1857
This merchantman very closely resembled the PALAO MARU, 4,500 tons. First sighted smoke, and it is believed from the constant quantity emitted, coal was being used for fuel. Sound reported 85 rpm apparently from large single screw. After the premature functioning of the exploder mechanism, decision was made to deactivate all influence exploder mechanisms and rely on the contact exploder mechanism, this was done on all remaining torpedoes.

12-14-41 2050
Surfaced. Time submerged 14 hours and 47 minutes.

12-15-41 0529
Submerged.

12-15-41 1958
Surfaced. Time submerged 14 hours and 9 minutes.

12-16-41 0557
Submerged.

12-16-41 1941
Surfaced. Time submerged 14 hours and 4 minutes.
Received CSAT despatched 1042, paraphrased as follows:
"Shift area to northeastward with southern boundary a line between Cape Fadaran and Endat Harbor using maximum speed. Area one hundred miles wide. SPARTAN II in adjacent area to northeastward. Keep off China coast by one hundred miles and west of dangerous ground. Report any results to date."

12-16-41 2800
Proceeding to new area at 12.5 knots, maximum speed possible due to heavy seas. Navigational fix unobtainable since December 12, 1941.

12-17-41 0552
Submerged.

12-17-41 1846
Surfaced (10 minutes) for star sights. Fix obtained indicated a current, set 81L° T, drift 0.75 knots.

— page 16 —
12-17-41 1946
SURFACED. Time submerged 14 hours and 6 minutes.
Received CSL# despatch 170019, paraphrased as follows:
"Area assignment changed as follows. PICKEREL from China Coast to longitude one eleven and between latitudes fifteen and seventeen. SPARFISH area extends sixty miles along Padaran to Kudat line then Osp 7 to latitude 12-30°N and west to coast. SAIGO western boundary is SPARFISH eastern boundary. Attention Rainna south bound traffic.

12-17-41 2300 Proceeding at best speed, 9 knots. At higher speeds, heavy seas wash into main induction and thence into engine rooms.

12-18-41 0533 Submerged. Rough sea requires 13 to 14 feet of periscope exposure, in order to observe horizon.

12-18-41 1943 Surfaced. Time submerged 14 hours and 10 minutes.

12-19-41 0100 Entered now area. Distance to new area 505 miles. During entire period wind NNE, force 5, sea INH condition 6 to 7. Sky has been overcast since December 17, 1941.

12-19-41 05:00 Submerged.

12-19-41 1829 Surfaced (10 minutes) for star sight. Fix obtained indicated zero current since 1900, December 17, 1941.

12-19-41 1942 Surfaced. Time submerged 14 hours and 2 minutes.

12-20-41 0540 Submerged.

12-20-41 1821 Surfaced (14 minutes) for star sight. Fix obtained indicated a current, set 090T, drift 1.25 knots.

12-20-41 1940 Surfaced. Time submerged 13 hours and 46 minutes.

— page 17 —
12-21-41 0534
Submerged.
Surfaced (16 minutes) for star sights.
Fix indicated a current, set 060FT,
drift 1.17 knots.

12-21-41 1928
Surfaced. Time submerged 15 hours and 38
minutes.

12-22-41 0525
Submerged.
Surfaced (17 minutes) for star sights. Fix
obtained indicated a current, set 090FT,
drift 1.15 knots.

12-22-41 1936
Surfaced. Time submerged 15 hours and 44
minutes.

12-23-41 0535
Submerged.
Surfaced (18 minutes) for star sights. Fix
indicated a current, set 077FT, drift 1.1
knots.

12-23-41 1936
Surfaced. Time submerged 13 hours and 43
minutes.
Received GAF despatch 231016, peraprosed
as follows:
"On receipt of effective for SHBO, New area
sixty miles from Padaran one one nine true
and then along a line zero two nine true to
latitude 12-50' North. Then west to coasts."

12-23-41 2330
Proceeding to new area.

12-24-41 0542
Submerged.
Sighted two enemy cargo vessels, at estimated
range of 16,000 yards.

12-24-41 1238
Fired two torpedoes at leading ship and one
at trailing vessel.

— page 18 —
12-24-41 1238
Data as follows:
First vessel:
Enemy course
Enemy speed
Range
Track angle
Gyro angle
Spread
Point of aim
Depth setting
Number of torpedoes fired
Hits
Results

12-24-41 1239
Second vessel:
Enemy course
Enemy speed
Range
Track angle
Gyro angle
Spread
Point of aim
Depth setting
Method of firing
Number of torpedoes fired
Hits
Results

12-24-41 1240
The Conning Tower periscope was so badly
fogged that the control room periscope was
used while firing. After firing at the
second vessel, the diving officer momentarily
lost depth control and was broadcast to 46 feet.
Enemy immediately turned away.

12-24-41 1249
After enemy had changed course observed what
was leading vessel at range of 1800 yards on
180° Track. Fired two torpedoes from stern
tubes.
Data as follows:
Enemy course

— page 19 —
12-24-41 1249
Enemy speed: 14 knots.
Range: 1,800 yards.
Track angle: 120° starboard.
Gyro angle: 0°.
Spiraled: longitudinal.
Points of aim: 1/4 length from bow, 1/4 length from stern.
Depth setting: 10 feet.
Method of firing: periscope.
Number of torpedoes fired: two.
Hits: None.
Results:
Enemy apparently reported our position to naval forces at Caramah Bay.
Position, three attacks:
Latitude: 11°-25'N.
Longitude: 100°-41'E.
Length: 1000 yards.
Length: 1000 yards.
Latitude: 11°-25'N.
Longitude: 100°-41'E.
Length: 1000 yards.
Latitude

— page 20 —
12-25-41 0542 Submerged.
: 12-25-41 1942 Surfaced. Time submerged 14 hours.
: 12-26-41 0545 Submerged.
: 12-26-41 0626 Sound contact of screws close aboard on 045' relative.
: 12-26-41 0650 Sighted three Japanese merchantmen column formation, distance about 800 yards.
    Data as follows:
    Course: 305°T.
    Range: 12 knots.
    Angle on bow: 100° port.
    Position: 11°-37'N.
    Latitude: 109°-30'E.
    Longitude: 12°N.

Two of these vessels were similar to the IJN's NARU while the third was similar to the AFAU's NARU. All three were apparently using coal for fuel. No attack could be made. This is first and only instance that pinging by merchantmen was noted.

12-26-41 1037 Surfaced (15 minutes) for star sights. Fix indicated current, set 1937, drift 2 knots.

12-26-41 1947 Surfaced. Time submerged 15 hours and 49 minutes.

12-26-41 2341 Sighted two darkened ships.
    Data as follows:
    Course: 135°T.
    Speed: 14 knots.
    Range: 10,000 yards.
    Angle on bow: 70° starboard.

— page 21 —
12-26-41 2341 Position: 11°-42'N, 109°-46'E, Latitude: 12-27-41 0003 Submerged. A few minutes after submerging, the ship was on 16 kilocycles. This continued for thirty minutes. Ships were not sighted by periscope.

12-27-41 0058 Surfaced.

12-27-41 0545 Submerged.

12-27-41 1642 Slighted two enemy merchantmen in column formation distance about 800 - 1000 yards between ships.

12-27-41 1725 Fired two torpedoes from stern tubes at rear ship. Data as follows:
   - Enemy course: 11 knots
   - Enemy speed: 900 yards
   - Range: 100° starboard
   - Gyro angle: 210°
   - Spread: 10 feet
   - Points of aim: 10 feet
   - Depth setting: Periscope
   - Method of firing: None
   - Number of torpedoes fired: Two
   - Hits: None
   - Results: Enemy apparently saw neither the wake of the torpedoes.

- 10 -

- 440

— page 22 —
12-27-41 1705
The torpedoes nor the periscope. Both
ships continued on the same course and at
the same speed. Turn count by sound 70
rpm.
Position: 12°-14.5'N.
Latitude 100°-35.5'E.
Longitude

These two ships were similar in type to the
AFRICA MARU and appeared to be loaded. From
the continuous amount of smoke emitted, it
is believed that coal was being used for fuel.

12-27-41 1806
Sighted two more Japanese merchantmen, in
column formation. The two previously fired
upon were still in sight. Range to these
ships when sighted 18,000 yards. Smoke
indicated coal as fuel.

12-27-41 1804
Sunk.

12-27-41 1903
Fired two torpedoes at leading ship.

12-27-41 1909
Fired two torpedoes at rear ship.
Data as follows:
First vessel.
Enemy course 0°-0°.
Enemy speed 9 knots.
Range 1,200 yards.
Track angle 110° port.
Oxygen angle 0°.
Spread 0°.
Length of air 16.5 miles.
Depth setting 16.5 miles.
Method of firing 16.5 miles.
Number of torpedoes fired 16.5 miles.
Hits 16.5 miles.

Second vessel.
Same data as for first vessel except range
had reduced to 1000 yards and points of aim
were, first at foremost, second amidships.

- 11 -

— page 24 —
12-28-41 1755 Data as follows:
Enemy course 035°T.
Enemy speed 8.5 knots.
Range last observed 10,000 yards.
Position:
11°-52.5°N.
Latitude 110°-13°E.
Longitude

12-28-41 1348 Enemy lost in darkness.

12-28-41 1932 Surfaced, Time submerged 15 hours and 48 minutes.

Decided to try for night attack or for position ahead at dawn considering all conditions. As night attack would have to be made silhouetted against the moon, a position ahead at sunrise was decided upon, especially since uncertain torpedo performance was involved. Also wind NNE force 4, seas NNE condition 5.

12-28-41 2145 Sighted the enemy merchantmen.

Data as follows:
Enemy course 035°T.
Enemy speed 8 knots.
Range 10,000 yards.
Angle on bow 130° starboard.
Position:
Latitude 12°-25°N.
Longitude 110°-27°E.

12-29-41 0544 Submerged.

12-29-41 0955 Sighted two enemy merchantmen.

Data as follows:
Enemy course 015°T.
Range 12,000 yards.
Angle on bow 80° starboard.
Position:
Latitude 15°-28°N.
Longitude 110°-32°E.

At this time wind had increased to force 5.

— page 25 —
12-29-41 0935 and seas were very high, requiring 13 to 14 feet of periscope exposure to see horizon. Thus enemy was not sighted sufficiently in advance to make an attack.

12-29-41 1835 Surfaced (19 minutes) for star sights.

12-29-41 1940 Surfaced. Time submerged 15 hours and 37 minutes.

12-30-41 0542 Submerged.

12-30-41 1942 Surfaced. Time submerged 14 hours. Wind NNE force 6, sea NNE condition 6 - 7.

12-31-41 0545 Submerged.

12-31-41 1051 Sighted a large enemy merchantman very similar to the AMAZTAN NEARU, escorted by a two stock destroyer of the HATSHUARI.

Data as follows:
- Enemy course: 230°T.
- Enemy speed: 15 knots.
- Angle on bow: 110° port.
- Range: 18,000 yards.

Enemy crossed ahead at a range of 9000 yards. No attack was made.

Position: 12-20°N, 125-45°E.
Latitude: 109°-58.5°E.
Longitude: 125-45°E.

12-31-41 1937 Surfaced. Time submerged 15 hours and 52 minutes.

Flx obtained from mountain peaks on shore indicated a current, set 195° true, drift 2.5 knots.

1-1-42 0545 Submerged.

1-1-42 1937 Surfaced. Time submerged 13 hours and 52 minutes.

- 14 -

— page 26 —
1-4-42 0545 Submerged.
1-4-42 1945 Surfaced. Time submerged, 14 hours.
1-4-42 0540 Submerged.
1-4-42 1942 Surfaced. Time submerged 14 hours and 2 minutes

Due to shortage of fresh and battery water, coupled with the fact that just sufficient fuel remained to reach Darwin, notified CSAP of intention to vacate area on January 5, 1942. Owing to the rough seas, fresh water was of such chlorine content as to render the water undrinkable. The need for each gallon of battery water distilled. Fresh water remaining on hand 3800 gallons with average consumption 397 gallons per day, up to this patrol date. Engine make up feed, plus battery evaporator make up feed, had consumed an average of 200 gallons per day. The last loss to date averaged 205 gallons per day. Thus 16 days supply of fresh water remained on hand, providing the same conditions obtainable for the passage to Darwin.

Food supplies for twenty eight days remained and trip was estimated to require twenty days.

1-4-42 0549 Submerged.
1-4-42 1737 Obtained navigational fir on island Pulo Ceacer de Mar. This indicated a current, set 196° true, drift 2.5 knots
1-4-42 1802 Signed a Japanese tanker.
1-4-42 1826 Sunset.
1-4-42 1637 Fired one torpedo at enemy tanker of HOSIMA type.

- 15 -

— page 27 —
1-4-42
Data as follows:
Enemy course: 190° T.
Enemy speed: 9 knots.
Range: 1,300 yards.
Track angle: 113° port.
Gyro angle: 0°.
Spread: None.
Point of aim: Amidships.
Depth setting: 10 feet.
Method of firing: Periscope.
Number of torpedoes: One.
Fired: None.
Hits: None.
Results: None.

Wind force 3, seas moderate swells.

Position:
Latitude: 10°-39'N.
Longitude: 109°-09'E.

This torpedo was fired with rudder throws of two up and three down.
During the thirty-five minutes of this approach lasted, seventeen periscope observations were made, the second officer checked every other observation, and extreme care was taken to make certain T.D.C. received correct data. A constant bearing rate was obtained for the last ten minutes prior to firing. Sound Count of 60 turns recorded. No reason can be offered for this miss, since at the time it seemed the torpedo could not miss.

However, it did not hit and the tanker made no move to indicate that he had sighted either periscope or torpedo wake.

1-4-42 1932 Surfaced. Time submerged 12 hours and 45 minutes.

1-5-42 0544 Submerged.

1-5-42 1942 Surfaced. Time submerged 13 hours and 58 minutes.

- 16 -

— page 29 —
1-10-42 1909 Entered Palawan Passage.
1-11-42 0521 Submerged.
1-11-42 1914 Surfaced. T1e submerged 15 hours and 43 minutes.
1-11-42 2100 Entered Balabac Strait.
1-11-42 2314 Cleared Balabac Strait proceeding to Sibutu Passage.
1-12-42 0512 Submerged.
1-12-42 1915 Surfaced. Time submerged 14 hours and 3 minutes.
1-13-42 0132 Entered Sibutu Pass.
1-13-42 0508 Cleared Sibutu Pass.
1-13-42 0500 Submerged.
1-13-42 1915 Surfaced. Time submerged 14 hours and 15 minutes.
1-14-42 0500 Arrived in patrol area in vicinity of North Watcher.
Submerged.
1-14-42 0950 While at periscope depth sighted an airplane which resembled our new type observation planes.
Position:
Latitude 0°-49'N.
Longitude 119°-44'Z.
1-14-42 1935 Surfaced. Time submerged 14 hours and 35 minutes.
Received OSAT despatch 140921, serial one hundred and one, paraphrased as follows:
"Proceed immediately to Balikpapan and fuel to capacity, then to Darwin via Lombok Strait. Report time of arrival and sunrise position."

— page 30 —
1-14-42 1935 every other day. By keeping one hundred miles South of Malay barrier it will be safe to run on the surface through daylight.

1-15-42 0032 Deperted area for Ballkapan. Reported time of arrival.

1-15-42 0454 Submerged.

1-15-42 1713 Crossed the equator.

1-15-42 1929 Surfaced. Time submerged 14 hours and 35 minutes.

1-16-42 0500 Submerged.

1-16-42 1810 Surfaced, 14 miles from Ballkapan Pilot Vessel. Took pilot on board and moored to 4' pier. Took 70,000 gallons diesel oil and 6500 gallons of fresh water. Obtained a small quantity of provisions.

1-17-42 0551 Underway from Ballkapan. Dropped pilot at pilot vessel.

1-17-42 0718 Submerged.

1-17-42 1953 Surfaced. Time submerged 12 hours and 20 minutes.

1-18-42 0500 Submerged.

1-18-42 1946 Surfaced. Time submerged 14 hours and 46 minutes.

1-19-42 0455 Submerged.

1-19-42 1944 Surfaced. Time submerged 14 hours and 49 minutes. Received CSAP despatched 191555, serial two nine, peraphrased as follows: "Previous instructions are cancelled and you will proceed to Soerabaja. Bendezvous with patrol at point ten miles west of

— page 31 —
1-1-42
1944
Levitorts Reel: light at 2000 on the twentieth.

1-20-42
0455
Received distress despatched from S-3C, arrived to call U.S. Ken-o-war. "Around Taka Bekang sinking." Later received 1st Lt. S. Smith and 1st Lt. C. C. East as position.

Decision was made to stay on surface and relay message to GSAF. Message was finally received for at 1009. In the meantime proceeded on surface at best speed towards Salt Thirty-Sir position and informed GSAF of my actions, position, course, speed and estimated time of arrival.

1-20-42
1415
Received instructions from GSAF to run submerged.

A complete report of my actions is included in the petrol report summary.

1-20-42
1456
Submerged.

1-20-42
1936
Surfaced. Time submerged 4 hours and 42 minutes.

1-21-42
0201
Sighted S-36 searchlight bearing 144° true.

1-21-42
0731
Submerged.

1-21-42
1651
Surfaced.

1-21-42
1723
Sighted two unidentified aircraft.

1-21-42
1724
Submerged.

1-21-42
1930
Surfaced. Time submerged 11 hours and 6 minutes.

1-22-42
0511
Submerged.

1-22-42
1936
Surfaced. Time submerged 14 hours and 25 minutes.

$ 20 -

— page 32 —
1-22-42 1956 Proceeding to Soerabaja in accordance with instructions.
1-23-42 0510 Submerged.
1-23-42 1938 Surfaced. Time submerged 14 hours and 23 minutes.
1-24-42 0500 Submerged.
1-24-42 1948 Surfaced. Time submerged 14 hours and 48 minutes.
1-25-42 0731 Arrived at designated rendezvous.
1-25-42 0740 Patrolling vessel not sighted, proceeded on prescribed courses approaching mine fields.
1-25-42 0840 Slighted patrolling vessel and made per-soribed signals.
1-25-42 0937 Cleared mine fields.
1-25-42 1517 Picked up Dutch pilot from pilot vessel.
1-25-42 1040 Moored to holl and Pier, Soerabaja, Java. Patrol number one completed.

— page 36 —
U.S.S. SARGO
SS188-
NAVY PATROL REPORT
PART D

A. Enroute to area number one.

The coast pilot information was widely used and the information contained therein was found to be fairly complete and correct.

B. Area number one. (For area assignments see summary).

In general the current set 200°T., drift 0.75 knots. The currents in the South China Sea are so variable, that no definite information can be given, from the meagre data at hand.

C. Area number two.

No information.

D. Area number three.

The current set parallel to the coast line and was constant in direction and velocity. Current set 195° true, drift 2.25 knots. This condition exists for a distance of 20 - 30 miles off shore. Further off shore the current strength diminishes to about one knot and the direction is very changeable, with an easterly set true most likely to be encountered.

E. Enroute to Saerabaja

(a) North of dangerous ground.

The current in this area, in general, set to the northward with a drift of about one knot.

(b) Sulu Sea.

The current encountered here was of no importance.

(c) Celebes Sea.

Set 161°, drift 2/3 knots.

— page 37 —
U.S.S. SARGO
:  SS 188
:  NAVIGATIONAL AIDS
:  PART D

(d) [N/A]

For 30 miles to westward of Balik Fapan a current of 2 knot setting 025° was met. Otherwise, in the northern part of the Straits the current was not noticeable.

(e) [N/A]

Current set 043°, drift 2/3 knots.

— page 38 —
U.S.S. SARGO
-: SS 188
Date: 1941
Time: 1941
Position: 1941
Latitude: 1941
Longitude: 1941
Number of ships: 1
Course: 1941
Speed: 1941
Type: 1941
Number of hits: 1
Number of depth charges: 1
Number of depth charges per ship: 1
Number of depth charges per hour: 1
Number of depth charges per hour per ship: 1
Number of depth charges per hour per hour: 1
Number of depth charges per hour per hour per ship: 1
Number of depth charges per hour per hour per hour: 1
Number of depth charges per hour per hour per hour per ship: 1
Number of depth charges per hour per hour per hour per hour: 1
Number of depth

— page 40 —
15 knots
Type: This was a destroyer of the AUGER class, identified from photographs in "Jane's Fighting Ships".

CONTACT #7
Date: December 25, 1941.
Time: 0826.
Position: Latitude 11°-37'N.
Longitude 109°-30'E.
Number of ships: Three.
Course 305°T.
Speed: 15 knots.
Type: Two were similar to the LIONS LAUR, the third similar to the AFRICA LAUR.
The first two were of about 7000 tons, one stack amidships, bridge forward and separated from stack, two masts, well deck forward and aft.
The third was similar to AFRICA LAUR as described in previous contact.

CONTACT #8
Date: December 26, 1941.
Time: 2341.
Position: Latitude 11°-48'N.
Longitude 109°-48'E.
Number of ships: Two.
Course 155°T.
Speed: 14 knots.
Type: Believed to be Destroyers.

CONTACT #9
Date: December 27, 1941.
Time: 1648 - 1785.
Position: Latitude 12°-14.5'N.
Longitude 109°-35.5'E.

— page 43 —
U.S.S. SARGO
SS-188

---

**DESCRIPTION OF SHIPS**
**ADMIRALTY SHIPPED**

---

**Position:**
Latitude: 00°-49'N.
Longitude: 119°-44'S.
Number sighted: One

---

**Type:**
This plane was very similar in appearance to our new naval observation planes.

---

**QUOTACT #2**

---

**Date:**
January 16, 1942

**Time:**
Various times during day.

**Position:**
Off Balikpapan pilot vessel.

**Number sighted:**
Three sightings

**Type:**
Three engine patrol plane. This was a Dutch plane.

---

**QUOTACT #3**

---

**Date:**
January 20, 1942

**Time:**
0736, 0835, 1034 and 1149.

**Position:**
Patrolling across the Strait between Borneo and the Celebes.

**Number sighted:**
Four sightings.

**Type:**
Patrol planes similar to our P.B.Y.

---

**QUOTACT #4**

---

**Date:**
January 21, 1942

**Time:**
1724

**Position:**
Latitude: 5°-40'S.
Longitude: 118°-00'E.

**Number sighted:**
Two.

**Type:**
Unidentified.

— page 44 —
U.S.S. SARGO
:  SS188
:  WAR PATROL REPORT
:  PART 1

There were no airplanes sighted which were
definitely identified as enemy aircraft.

513

— page 45 —
U.S.S. SARGO
SS188

MARITIME RECORD

ATTACK #1

Course: 140°T.
Speed: 12 knots.
Firing range: 1100 yards.
Gyro angle: 0°.
Track angle: 90° port.
Spread: None.
Spent: None.
Point of aim: Bridge.
No. of torpedoes fired: One.
Method of firing: Periscope.
Depth setting: 10 feet.
Notes: None.

Results:
At 10 seconds from the time the firing was closed an explosion was heard, and incidentally distinctly felt, indicating a preventive functioning of the periscope mechanism. Enemy turned sharply away and was lost in the darkness.

ATTACK #2

Course: 105°T.
Speed: 12 knots.
Firing range: 900 yards.
Gyro angle: 0°.
Track angle: 90° port.
Spread: Longitudinal.
Points of aim: 1/3 length from bow and 1/8 length inside stern.
Notes:
No. of torpedoes fired: Two.
Method of firing: Periscope.
Depth setting: 15 feet.
Notes: None.

Remarks:
Since the conning tower periscope was fogged, the control room periscope was used for this attack. After firing at the second vessel, the diving officer momentarily lost depth control, with sighting by the enemy as a consequence. Both vessels turned away and steered on a new course. After enemy had changed course, observed, and passed at a range of about 600 yards. Since track angle presented at this time was 100° port, decided to get a set up and make another attack. This was carried out and data is given for

— page 46 —
U.S.S. SARGO
:  SS188

ATTACK #5
Course: 09°T.
Speed: 12 knots.
Firing range: 11°yards.
Gyro angle: 30°(R).
Track angle: 70° port.
Spread: None.
No. of Torpedoes fired: One.
Method of firing: Periscope.
Depth setting: 15 feet.
Hits: None.
Remarks: Same as Attack #2.

ATTACK #4
Course: 09°T.
Speed: 14 knots.
Firing range: 1000 yards.
Gyro angle: 0°.
Track angle: 120° starboard.
Spread: Longitudinal.
Points of aim: 1/4 length inside beam, 1/4 length inside stern.
No. of Torpedoes fired: Two.
Method of firing: Periscope.
Depth setting: 10 feet.
Hits: None.
Results: Enemy apparently report ed our position to their naval forces at Cannel Bay.

ATTACK #3
Course: 23°T.
Speed: 11 knots.
Firing range: 900 yards.
Gyro angle: 210°.
Track angle: 100° starboard.
Spread: Longitudinal.
Points of aim: First at foremast, Second abaft bridge.

— page 53 —
1. A summary of consumption of vital supplies for the period December 8, 1941 to January 25, 1942 inclusive, is as follows:

A.
Fuel oil consumed 69305.0 gal.s.
Kills steamed by pit log 7357.0 mls.
Fuel oil expended per mile 9.46 gal.s.

Lubricants oil on hand at outset of patrol 5249 gal.s.
Lubricants oil consumed 1603 gal.s.
Lubricating oil consumed 0.227 gal.s.
Galions per mile 0.227 gal.s.

Fresh water distilled, total 9901 gal.s.
Averaged distilled per day 207 gal.s.

Fresh water expended, total 19105 gal.s.
Averaged expended per day 597 gal.s.

Average loss of fresh water per day 190 gal.s.

Battery water distilled; total 3579 gal.s.
Averaged distilled per day 70.5 gal.s.

Battery water expended total 3706 gal.s.
Averaged expended per day 80.6 gal.s.

B.
The average number of gallons of fresh water expended per day may be accounted for as follows:

Main engine circulating water replenishment, average per day 6 gal.s.

Auxiliary engine circulating water replenishment, average per day 3 gal.s.

-1-

— page 54 —
U.S.S. SARGO
SS-188-

PAGE 1

GENERAL REGARDS
2 gals.
Fuel oil purifier, average
per day
15 gals.
Make up feed for battery
water evaporators, average
per day
179 gals.
Average expenditure fresh
water per day other than
for personnel.
206 gals.
Average daily expenditure
191 gals.
Average expenditure for
personnel.
2.76 gals.
Average expenditure, gallons
per man per day (6 officers,
63 men)

2. At the beginning of this patrol a three mettle
watch, both surface and submerged, was maintained. After
the fifth day, and arrived in patrol area, the necessity of
a sound watch coupled with use of four night lookouts led
to the establishment of a two section six hour watch both
surface and submerged. The engine room and maneuvering room
watches were retained on a three section, four hour basis.
Lookouts were relieved every hour, as were the sound and
diving plane stations.

Meet hours were established at the outset of the
patrol as follows:

Breakfast 1915
Supper 0350
Soup, cold meats,
fruits, and coffee
at 2315 and 1150

Wash water was secured to all showers and wash
basins on the first day of the patrol. The condensate from
the air conditioning and the first distillate from the

— page 57 —
1/1/1942
U.S.S. SNAFON
War Patrol Number One
Shooting Area and Movements
Name and Date
Command: Boy
December 22nd, 1942, 1 January 1943
1941-42

May to Characters:
1. Arrived Area
404. 1/1/1942

— page 58 —
1/2/39
DECLASSIFIED - DOD DIR. 52004
01 27 Sep 58
BY 7 ZC
DATE 1/2/39

U.S.S. SARGO (S3138)
WAR PATROL NUMBER TWO

PERIOD
FEBRUARY 5, 1942 to FEBRUARY 22, 1942

JUNUS LIST

DATE TILT

FINES
(7T) 40204

1180

— page 59 —
2-5-42 1542 Underway from Submarine Base at Somerbay, Java, for Air Patrol Number Two. In company with the Dutch Submarine King Elveron, proceeding to sea via the west entrance to Soerabaja.

2-5-42 1900 Took departure from lighthouse. Latitude 6°-41'0". Longitude 112°-43'0".

2-5-42 1928 Cleared swept channel and changed course to 075° true.

2-5-42 0505 Submerged.

2-5-42 1915 Surfaced. Time submerged 14 hours and 10 minutes.

2-7-42 0500 Submerged.

2-7-42 1915 Surfaced. Time submerged 14 hours and 15 minutes.

2-7-42 2100 Shifted to linus sight zone time.

2-3-42 0515 Submerged.

2-6-42 1935 Surfaced. Time submerged 14 hours and 20 minutes.

2-9-42 0514 Submerged.

2-9-42 1951 Surfaced. Time submerged 14 hours and 17 minutes.

2-10-42 0508 Submerged.

2-10-42 1917 Surfaced. Time submerged 14 hours and 9 minutes.

2-11-42 0500 Submerged.

2-11-42 1921 Surfaced. Time submerged 14 hours and 21 minutes.

2-12-42 0459 Submerged.

2-12-42 1915 Surfaced. Time submerged 14 hours and 15 minutes.

— page 60 —
2-1-42 0500 Submerged.
2-1-42 1916 Surfaced. Time submerged 14 hours and 16 minutes.
2-1-42 0457 Submerged.
2-1-42 0720 Entering follow Harbor, Indiana.
2-1-42 1226 Observed the United States flag flying from
    where at Parang, distance to wharf one mile.
    Reversed course standing out of harbor.
2-1-42 1544 Entering harbor.
2-1-42 1756 Sighted three blue lights on wharf.
2-1-42 1316 Surfaced.
2-1-42 1823 Established communication with Army at Parang.
2-1-42 1840 Anchored one mile from Parang wharf.
2-1-42 1848 Ammunition barge of 50 tons capacity moored
    alongside.
2-1-42 1854 Commenced unloading ammunition.
2-1-42 2119 Passengers came aboard for transportation to
    Soerabaja. They consisted of 24 army enlisted
    men and were ground crews for the U.S. Army
    14th Sonderminent Squadron.
2-1-42 2157 Ammunition unloaded.
2-1-42 2219 Underway for sea.
2-1-42 0455 Submerged.
2-1-42 1917 Surfaced. Time submerged 14 hours and 22
    minutes.
2-1-42 0459 Submerged.
2-1-42 1917 Surfaced. Time submerged 14 hours and 18
    minutes.
2-1-42 0458 Submerged.

— page 65 —
35-12N
WAR PATROL REPORT
PART D

NAVIGATIONAL AIDS:
A. Java Sea.
   Current set 090° true, drift 0.5 knots.

B. Southern Lakassar Straits
   Current set 222° true, drift 0.4 knots.

C. Northern Lakassar Straits
   No current was observed in this part of the
   strait.

D. Celebes Sea
   Current set 046° true, drift 0.5 knots.

E. Illinois Bay
   No current was observed here.

F. Polloc Harbor
   No current was observed here.

— page 67 —
35-12N
: 125-45E
: USS SARG
: 33-138
: WAR PATROL HF OKT
: DESCRIPTION OF RELY GRANT SLIGHTED
: PART B
: None sighted.

— page 69 —
35-12N
: 125-45E
: USS SAVAGE
: 33-188
: WARTIME PATROL REPORT
: PART G

ATTACKS LADE
No attacks were made.

1199

— page 71 —
35-12N
S5-188

WAR PATROL REPORT

NATO DEFECTS AND CASUALTIES

PART I

The major defect encountered on this war patrol was the failure of the refrigerating compressor. The shaft seal diaphragm of the refrigerating compressor cracked prior to the start of this patrol and a suitable spare diaphragm could not be obtained. As a consequence this compressor could not be used and it was necessary to use one of the air conditioning compressors on the refrigerating system.

During the past year there have been three renewals of the shaft seal diaphragm on the refrigerating compressor. In this connection the instruction pamphlet states, quote, "If the shaft seal fails, then a new compressor must be installed; the shaft seal is not to be dismantled in the field". It is recommended that in future installations the air conditioning compressor be eliminated, by specifying that the design be such that repairs can be made in the field.

Since the forward air conditioning unit was used for refrigeration, the forward port of the ship was extremely uncomfortable during long submarine passages. The temperature of the supply air of the ventilation system ranged from 95°F. to 104°F. during the entire patrol. As a result almost all personnel berthed forward, and personnel standing control room watches, developed heat rashes which materially increased their discomfort. In some cases the heat rash covered the entire body causing great discomfort.

1191

— page 76 —
2-25-42 1740 Underway from Submarine Base, Sobreabaj, Java to Exmouth Gulf, in accordance with the despatched orders from Commander Submarines, Asiatic Fleet.

The following passengers were on board:

BRODER, B.J., Lieut., USN
VERD, P.H., Lieut.(jg), USNR
SALISBURY, J.D., Ensign, USNR
O'LITTLAN, J.D., Ensign, USNR
WATERS, Lt., Jr., Ensign, USNR
WALFURT, G.A., R.Elect., USNR
ARCHER, E.D., H.M.S., USN
HELL, J.H., T.S., USNR
DENSIFIED, J.W., Jr., T.S., USNR
POTTON, V.O., H.M.S., USN
GRIFFIN, V.O., H.M.S., USN
HUGH, K.R., T.S., USNR
HICKIN, G.E., Sea.2, USN
HOBBS, C.W., H.M.S., USN
JAMESON, R.A., T.S., USNR
LIAM, K., M.Attl., USN
HACKETT, E.I., H.M.S., USN
MOOTLEY, W.E., Sea.1, USN
MITCHELL, H.C., H.M.S., USN
ORCHNER, J.J., H.M.S., USN
PAWLICKA, A., H.M.S., USN
PROCH, A.P., H.M.S., USN
POW, L.W., M.Attl., USN
PAIMES, S.H., T.S., USNR
RHODES, H.E., G.H.M., USN
BEHR, R.W., Sea.1, USNR
STEWART, H.W., Jr., Sea.1, USNR
SUN, S., M.Attl., USN
WELLS, L.B., G.H.M., USN
WONG, J., O.C.S., USN

2-25-42 1935 Pilot disembarked at Pilot vessel.

2-26-42 0704 Cleared mine field channel.

2-26-42 0718 Submerged.

2-26-42 1944 Surfaced. Time submerged 12 hours and 26 minutes.

- 1 -

— page 77 —
1-2-46 2052 Entered Ball Strait.
2-27-42 0100 Cleared Ball Strait and set course 182° true, for Emsworth Gulf, N.W. Australia.
2-27-42 0523 Submerged.
2-27-42 1923 Surfaced. Time submerged 14 hours.
2-28-42 0525 Submerged.
2-28-42 1911 Surfaced. Time submerged 13 hours and 46 minutes.
2-28-42 2222 Received a despatch from Captain FIRE directing SABGO to proceed to Freemantle.
3-1-42 0516 Submerged.
3-1-42 0646 Surfaced. Time submerged one hour and thirty minutes. At this time decision was made to run on the surface for the remainder of the passage to Freemantle.
3-2-42 0000 Proceeding on surface to Freemantle, Australia.
3-2-42 1136 Sighted a periscope bearing 280° relative distant about 2000 yards. Latitude 21°-10'S, Longitude 115°-05'W.
Maneuvered on surface to avoid and lost sight of periscope immediately thereafter. The Orford-to-the-Deck and three lookouts state they positively saw about six sight feet of periscope showing and that after we turned away the periscope was hauled down.
3-3-42 0000 Proceeding on surface to Freemantle, Australia.
3-4-42 0000 Proceeding on surface to Freemantle, Australia.
3-4-42 1338 Sighted a two-engine landplane bearing 345 degrees (2), distant about five miles, altitude about fifteen hundred feet.

— page 78 —
3-4-42 1340 Submerged; course (136°(T.).

At about 1341 heard one bomb explode on port quarter, no damage to ship. Stern planesman allowed down angle to get away from him. Stopped motor, blew bow buoyancy and for- ward group, checked descent at 170 feet. Vented tanks a fraction of a second too late and broached. Believe ship was at fifty feet depth when a second bomb exploded over coming lower. This was a terrific explosion; glass rained down, power and lighting lost, depth gages were put out of order, various other casualties.

TWO ILL UNDER PART I) 3-4-42 2X03 Surfaced; time submerged 6 hours and 23 minutes.

3-5-42 0C22 Sighted Rotterdam Island Light.

3-5-42 0C35 Exchanged calls with TARPON.

3-5-42 0C37 Exchanged recognition signals with escort vessel. Formed column and proceeded into port.

3-5-42 0C50 Moored in nest alongside HOLLAND, Fremantle, Australia.

— page 80 —
1/200

U.S.S. SARGO
-88188-

WAR PATROL REPORT

TOTAL INFORMATION
PART C

No observations were made on this patrol.

— page 89 —
508/18-3
Serial 04
May 10, 1942.

SS-1-CRASHED
TO:
The Commander Submarine, Atlantic Fleet.
Subject:
War Patrol Report - U.S.S. SARGON.
Enclosure: (A) Report of U.S.S. SARGON per Patrol Number Three.
1. The War Patrol Report for this vessel's third patrol covering the period March 16 - May 7, 1942, is forwarded herewith.

BICOLOR
BY:
R. V. GRIGORY.

FILMED
4/1/64

— page 90 —
1. U.S.S. SARGO
: SS188-

March 16, 1942.
Underway at 1300 from Fremantle Harbor in accordance with Commander submarines, still the Fleet secret operations order No. 3 of March 15, 1942. Sixty four men, five officers, twenty torpedoes, 1700 gallons fuel, 4,000 gallons of water, lubricating oil and provisions on board, passed through Point Casey at western end of swept channel and proceeded on course 325.

March 17.
Continued northwesterly at thirteen knots.

March 18.
On morning dive discovered that an air bunk was leaking badly. Tread leak to No. 4 main air bunk and bled it down, leaving it empty for the remainder of the patrol.

March 19.
Lovely morning twilight and ran submerged during day off Xmas.

March 20.
Ran surface, at 1300 passed through line scuttled followed by increasing wind and sea. Eroaster frilling steadily.

March 21.
Eroaster still steadily falling, seas high, force 6 wind from 3 x 3, ran submerged during daylight in hopes of letting storm pass. Surfaced at sunset in moderate typhoon, wind force 10 to 11 from 30, seas increasingly large. Eroaster was broken due to having fallen on deck; the manometer indicate 29,41 inches. Made turns for 9 knots with pit log showing only 2 to 4.

March 22.
Wind and sea increased steadily, with wind hauling slightly to northward. Love at dawn to let typhoon center pass ahead. Rolled compass derably at 130 feet depth. Impossible to run at periscope depth. Surfaced at dusk, and found wind and sea from NW; wind about 30 kts, and higher in gusts, and sea much confused. Tried running with main induction open, but took considerable water aboard and thereafter took engine air through con ing to tower hatch. Occasionally high seas resulted in making the boat wet and uncomfortable, but no meterial damage was sustained. Lowest manometer reading was 39.08, while this storm did not compare in severity with the typhoon which damaged LAR on December, it was severe enough. Position was now doubtful, no fix heving been obtained since noon twentieth.

Enclosure (A)

— page 92 —
U.S.S. SARGO
SS-188-

April 3. At 1432, while running at 90 feet north of Sargasso, she fired depth charge 50 - 72 fathoms, scraped bottom. Came to periscope depth and later fired position exactly by bearings on island 07-14N and 118-27.72, sustained no noticeable damage except to pit logs rudder when was bent or broken.

April 4. Sighted Sargasso and Comiran islands at 0115, proceeded through Belasco Strait using deep channel without incident. Set course 244 for Brunel.

April 5. Approaching Brunel, ran Bormeo.

April 6 & 7. Covered up, reached Brunel. Chart showed many dangers here, and veritable currents. Set of current proved to be generally northerly, with current running 225 to outside 70 fathom curve. After surfacing ran course 225 to dive off 1st, No. Bormeo.

April 8. Closed 1st to 20 fathoms. Inspected coast line, saw no signs of industrial activity. At dusk surfaced and set course for radio 0bl, Fremoth into China.

April 9. Experienced reversed density in sea - boat heavy at periscope depth, light by 6000 pounds at 100 feet.

April 11. Reached Singapore - Formosa line about noon. Noticed to run this line to point off Yunnan Bay, then work southward inshore.

April 12. Continuing course 025 on Singapore Formosa line. Received Somburse despatched serial 28 order into 2nd to start back on April 15th. This upset plans originally made, so decided to close coast earlier.

April 13. No incident.

April 14. At 0245, 600 miles east of uio coast, she fired 1st, sighted ship, later identified as submarine bearing 205 1, headed for 1st on surface. Closed to about 3000 yards and was challenged by vessel. Over to attack by sound, but believe he also dove. Heard arrows at intervals, then lost target altogether. At sunrise sighted two vessels in column; leading vessel at 5000 ton A.A., following a large armed AA, stood in to attack, but could close to only 4000 yards. Decided to fire long range shots at both targets. No. 2 tubes would not sniff power. At 0721 fired, no. 1 & No. 2 tubes failed to

- 2 -

SALOUSSIE (A)

— page 96 —
0 0

U.S. S. SARGO
-SS188-

STATISTICAL DATA

Miles steamed
surface
submerged
total

Fuel used
Fuel remaining at end of patrol
Lub oil used
Lub oil remaining at end of patrol

Hours submerged
Averagelength of dive

Food on hand at end of patrol
Men days lost due illness

Venerel diseases

14 days (estimated)
10 (1 case of chronic appendicitis)

None

- 7 -

Enclosure (A)

— page 99 —
0 0

U.S.S. SARGO
-SS 188-

4

NAVIGATION ADDRESS:
Unsangi light, No Borneo, was burning on April 25.
The bubble sextant was found less reliable than
the regular sextant, even without a moonlight horizon.

- 10 - Enclosure (A)

— page 100 —
5
SHIPS SHUTTLE

| Position and Time | Description | Course and Speed | Range | Altitude |
||||-------||
| 2252 March 29 15 miles SW Cape William | Medium sized AK-5000 ton | 000 10 kts. | 14000 yds. | No |
| 0245 April 14 60 miles east of full Coelis de Mer | Submarine | 180 14 kts. | 6000 yds. | No |
| 0042 April 14 60 miles east of full Coelis de Mer | Medium AK and Large AK | 020 9 kts. | 16000 yds. | Yes |
| 1248 April 15 14 miles east Caernarh Bay | Submarine (?) | 1500(?) 10 kts.(?) | 2000 yds.(?) | No |
| 0079 April 26 40 miles SW South Weather | Tanker 3000 ton with escort DD escort on starboard bow of tanker about 5000 yds. Probably another on port bow. | 025(?) 12 kts. | 16000 yds. | No |
| 1610 April 27 30 miles 750 from Cape William | Medium AK with 010 echo ranging 10 kts. escort. escort not sighted except tip of masts, and apparently about 4000 yds. ahead of AK. | 18000 yds. | No |

Enclosure (A)

— page 102 —
U.S.S. SARGO
- SS188-
U.S.S. SARGO (SS188)
Time, date: 0721, -8 one time
April 14, 1942
Location: 60 miles east of
Tulo Geier de Mar
Armored fighter or
auxiliary, 4000 ton freighter
3000 tons, 500 ft.
110 ft. mast, and
5000 ton 500 ft.
65 ft. mast freighter
Both high speed twin
screw.

Attack made: Day
Submerged
Periscope
Day
Submerged
Periscope

Target:
Course: 028
Speed: 9.5
Range: 4400
Truck: 102ft
Point of Aim: Maximum
Maneuvered avoid yes

Torpedo:
No. fired: 1
Depth setting: 8
Kee1 depth: 65
Oyro angle: 007
Run: 4600
Hend to run: yes
Speed: low

Fire control: white light
white light
Missed (avoided)
Missed

Remarks:
Intended to fire
two torpedoes at
each. No. 3 tor-
pedo would not
shift to low power,
shift to No. 2 fail-
ed to fire, No.4
was seen and avoid-
ed, Target increased
intended to fire
four using 3/4 snipe
length spread with
periscope. No. 3 tube
failed to fire, No. 4
was misdirected by TDC
operator starting set
up, Nos. 1 & 2 passed
ahead of target.

- 12 -

Enclosure (A)

— page 106 —
U.S.S. SARGO
-SS188-

9

**Maintenance Instructions:**
A. Main engine exhaust valves. These valves have leaked excessively throughout this patrol, becoming much worse toward the end of the patrol. One main engine, including crankcase and sump, was flooded due to leaks, and no auxiliary gearbox was flooded. On two occasions it was once or two times to save the main motors from flooding. Grinding in these valves before diving never resulted in stopping the leaks, but only in reducing them.

B. High free use air system. Leaks were discovered in no. 4 main air bank that necessitated bleeding down this bank for the duration of this patrol. Several other leaks exist that require repair. It is believed that these leaks resulted from the bombing experienced by the SARGO on March 9.

C. Torpedo tubes. The numerous tube csecuitles on this patrol indicate the necessity for a complete break-down and overhaul of all tubes and fittings.

D. Pitometer log. The rudder was broken off or bent incident to running over an unhearted shaft.

E. Negative tank flood. This valve will not open fully, resulting in very slow flooding of negative. The operating gear functions properly.

F. Engine exhaust evaporators. These require cleaning and an effort should be made to eliminate copper piping where found to decrease the copper content of the water made.

G. Drain line. The drain line is evidently badly corroded. Ships force were continually tracing down and patching pin hole leaks.

— page 109 —
10 0458
Note: All times given herein are Zone -6 time.

1st day, June 2: Underway from Frantzville, Va., at 1830 in accordance with Combat Subassault Operation Order #26. Jax officers, seventeen men, twenty torpedoes, and full combat boat oil, fuel, water and stores on board. Passed through zone at 1700, Point Dot at 1918, Point Jax at 2049, and set course 225 heading northward along western side of bombing restriction lane. Steed lifted to 9 knots due to exceptionally heavy seas.

2nd day, June 3: Late in two hour dive at dawn for training purposes. Experienced usual trouble with exhaust valves leaking although these valves had just been repaired by HOLAND. Running 2 anenines, 12 to 13 knots.

3rd day, June 10: Made one hour dive at dawn. Achieved valves again leaked faster than drain pump could pump the water out, although these valves had been repaired in just before diving. Leakage is serious only on the after (airport diving) eninies. At 0825 and again at 1140 lookouts reported resistance, but neither the 0.0.D. nor myself saw them, and it is believed that these were inainary, or seasulls doing "wine-ups". Taking 13 knots.

4th day, June 11: Made one hour dive at dawn. After eninie exhaust valves still leak badly. At 2200 passed through lat. 20 lane, 114 at in accordance with the directive, and set course 011 for Lombok at 13 knots.

5th day, June 12: Made routine damage dive. Instucted men in use of sub machine run. At 1702 made an emergency dive for training purposes. Surface and continued at 13 knots. No. 2 auxiliary generator out of commission due to oil leakage. Had usual leakage on after eninie exhaust valves.

6th day, June 13: Made routine running dive than dead dead remain submerged as we were now close to bury, but cut of phase with a proper time of arrival, necessitating a killing some 8 hours. Surface at dusk, having pursued after eninie room bilge fairly regularly all day due to exhaust valves leakage. At 2500 compensated manetic compensation, which had been repaired by HOLAND.

7th day, June 14: Drove at dawn, surface at dusk. Trim line carried away in after torpedo room at a seaward joint. Patched with rubber patch.

8th day, June 15: Drove at dawn. At 0023 bow plane motor contactor burned out. Completed repairs at 1005. Sighted Lombok Island at 1414. Drain line section to drain pump carried away due to corrosion. Patched with rubber patch and strap. Surface at dusk. Entered Lombok Strait about midnight.

- 1 -

— page 111 —
3-3-C-R-2-T
HARVARD (Cont'd).
14th day, June 21: Heavy rain set in after 0100 and ran slow speed with sound rained. Air starting piston on No. 1 main engine struck, with result that I had to use the after engines. As usual, when divi- at dawn, had to surface to crind in the valves some more. Surfaced at dusk again in poor visibility.

15th day, June 22: Dove at dawn, surfaced at dusk in improved visibility and got first fix since passing Cape William. Ran 15 knots to get through Jibutu before dawn.

16th day, June 23: 0200 Commander Jibutu passed. At 0305 opposite Bongoa passed at U.S. carrier south bound, which was probably 30LZ. Dove at dawn got into north and of Jibutu Pass, surfaced at dusk and set course 34 to pass out of Pearl Bank.

17th day, June 24: No incidents.

18th day, June 25: 0250 Jibuted Beliaba I land and made passage via Nusbata Channel without incident. Man barely clear of pirates visibility shut down with heavy rain, and I was very thankful to have Balabao behind me. Dove at dawn, surfaced at dusk, running down traffic lane from Palawan Passage to rat south of seven north as directed, on course 22. Heavy rain continuing all night.

19th day, June 26: No incidents.

20th day, June 27: No incidents. Thick haze at night with poor visibility.

21st day, June 28: At 0305 chanced course to 270, as an now south or latitude 7. Dove at dawn, surfaced at dusk, with usual night time haze. I now intend to run across China Sea to the Singapore-China Coast traffic lane, then 2010 that down to the area west of Anambas Islands.

22nd day, June 29: No incidents.

23rd day, June 30: No incidents. At 2034 headed down for Anambas area on course 204.

24th day, July 1: No incidents. Visibility very bad with much rain.

25th day, July 2: No incidents, except usual night rain.

26th day, July 3: Upon surfacing, headed up on 060 to cover channel between Anambas I. and the Natuna Islands. Had regular rain at night.

27th day, July 4: No incidents.

- 3 -

ENCLOSURE (A)

— page 114 —
3-2C-R-2-T
43rd day, July 20: Dove at dawn, surfacad at dusk.

44th day, July 21: Locsin time due to zero visibility. Position doubtful, but finally picked up Tanjero Unanue Licht at 0514. Since there was not time now to run past Zibutu et nirht, I desided to spend one more day covering the north exit of Zibutu from close off Tawi Tawi. Surpassed at dusk having seen only one native banca, and ran through Zibutu Pass without incident. Proceeding toward Makassar.

45th day, July 22: Visibility poor with rain. Dove at dawn, surfacad at dusk. At 1530 bunaid out to No. 1 station rod of No. 1 main engine. Since I was r&u&ut to use the after anrines due to the exhaust valve leakage, this caused additional delay, which I minded not at all as this increased the possibility of finding something to shoot at.

46th day, July 23: Completed repairs to No. 1 main anrine and immediately burned out the rod anrines. Dove at dawn off Tp. Mang Kalikat. At 1755 sighted vessel. On southward course. Made approach and attacked but missed with these torpedoes. For description of ship see page 1, Enclosure (5). Yired at 1545. Descripton of attack see page 1, Enclosure (5). Yired at 1545 in twilight, and he ran away on a westerly course, and was lost in the poor visibility to the westward. I did not attempt to find and pursue him when I surfaced shortly afterwards as I still had one engine out of commission, had to ret a charge in on the other, which only left me 15 knots on the after anrines and this was just about his speed. In addition I could not be sure whether he would return to his original course or continue retiring westward, which latter he might well do if bound for Balikpapan.

47th day, July 20: Completed repairs to No. 1 main at 0100 and commenced running it in at liberty. Dove at dawn, surfacad at dusk. An now well behind schedule, and have probably been over-taken by ZALTUZI, with ZADUZOO on the same course. At 1957 sighted 2 sanpans. At 2157 sighted Cape Millian. At 2218 sighted a small vessel bearing 100 T. Visibility good with bright 5/4 moon. 2228 vessel identified as small DD or subchaser. As ZUGO was in good visibility from him, dove. 2355 surfaced and saw same patrol against background. Jtood away from land on westerly course.

48th day, July 25: At 0114 resumed southerly course. 0122 sighted sanpan and passed clear. 0155 sighted submarine on northerly course. He massed to westward in full path of moon and was identified as either ZATUZO or GUATUZO. 0147 picked up another sanpan.

- 6 -

EXPLANATION:
- 3-2C-R-2-T
- 3-2C

— page 116 —
53rd day, July 30: Ran surface except for short trim dive in early morning. Weather started kicking up at 1500. At 1703 fired 3 rounds of 3" for test and training. On breakline out ammunition, found that the cork casket covering the primer had cemented to the case and required some time to remove it. This might prove embarrassing at somestairs, so I propose to examine a number of "ready" rounds for this defacto. At 1902 had to slow to 2 enstines and made turns for 15 knots, but made only 9-1/2 by log.

54th day, July 31: At 0442 tried to run 3 engines, but turns for 16 knots only gave 1. At this rate would have been enough fuel to rot in, particularly as a 5000 discrepancy was discovered at midnight. I chareforce decided to slow down and delay one day and accordingly sort a new time of arrival at 1540. In this connection it may be that the Dutch bottom patrol used in the Surabaya docking is not holding up and that we are casting badly fouled. The original plastic dates from September 9, 1941.

55th day, August 1: At 0005 sighted BY patrol, but was evidently not sighted by him.

56th day, August 2: At 1125 sighted BY patrol, and sighted same plane again at 1540.

57th day, August 3: Passed through Point Easy at 0230 and arrived at rendezvous at 0445.

— page 120 —
1610 July 9
Regularly scheduled diplomatic ship enroute
Bang Kok from Saigon. Black hull, white bridge, single
yellow stack, 2 masts, about 1200 tons, twin screw, 180
rpm at 10 knots. Passed 9 miles west of Fulo Tai, Gulf of
Siam, on course 330. Word "Diplomat" painted in large white
letters on hull. Not attacked.

: 1801 July 23
In lat 00-10 N, long 119-08 E, off Cape Mang
Kailhat, Nakassar Strait, a small tanker, two masts, funnel
aft, high after deck house with apparatus for passage
accommodation. Armorily had a sun mounted aft. Length
about 175 feet, 1000 to 1200 tons, twin screw, 208 turns
at 13 knots, on course 225. Attacked.

: 2200 July 2
Two subchasers in deep
water passage off Cape William, Nakassar Straits. Single
stack about 150 ft. long, guns for and aft, silhouette
similar to U.S. subchasers, may have had a deck house gun
antiships. Avoided.

— page 122 —
1843 Zone -8 July 23.
Location: Lat. 00-10 N, Long 119-08 E, in Nakassar Strait.
Type: Small tanker, 1000 ton. (See description under "ships sighted").

Method: [blank]

Target: [blank]
Course: 185 228
Speed: 11.5
Range: 900
Track: 117° E, 190° P, 170° P.

Torpedoes: [blank]
First: 3
Depth set: 8
Knot depth: 65
Gyro angle: 323, 323 3/4, 316
Run: 930, 930, 1400
Hard run: yes, yes, yes
Fire control: White light

Note:
Believe that target was much closer than 900 yards and may have missed due to fish not arming. Discrepancy in range due to misconception in size - upon firing I realized he was much smaller than I had previously supposed. Also, from the rapidity with which his bearing changed making it impossible to swim all the way in for a zero gyro angle, he must have been small and close. The light was poor during the approach it being made after sunset. Both of us second and I agreed that his sight, which were mounted on goal posts, were set off correctly, making a course estimated somewhat difficult. He evidently saw my scope when I raised it to fire, because he turned sharply away. I had probably been making longer than normal excursions due to the poor light. The third torpedo was fired with a snap set up after seeing the first two had missed.

Depth used was 8 feet. Information that our fish were running 11 feet deeper than set had not been received at this time.

— page 124 —
1. Sweated joint in trim line in after torpedo room carried away due to corroding through. Ship's force effected temporary repairs.

2. The drain line developed about fifteen holes in various places from the control room to the after torpedo room, which were patched with adhesive tape, rubber tape, or wooden pegs. The drain line continues to disintegrate, as was foreseen during the last unkneep period when a renewal was requested. Due to lack of material, the tender was able to renew only 12% feet of the water piping. The continually developing holes made bilge piping most difficult, and the leaking engine exhaust valves did not help matters.

3. The fuel components in the forward engine room developed two corrosion holes. These were patched temporarily, but in the event of deep submarine, it would have been necessary to secure the components. These piping casualties indicate that the life of the salt water piping in the SARGO is limited.

4. The after main engine exhaust valves, both inboard and outboard, leak excessively and uncontrollably. These valves had been resorted by the tender, but after the first couple of dives they were as bad as ever. According to the ship's personnel, trouble has been had with this valves since commissioning. It is believed that the only answer is to remove the valves completely with types that have proven satisfactory in service. While it is true that grinding in these valves reduces the leaks, and after several grindings in stops all leaks, it cannot be expected that this can always be resorted to in enemy waters. The end result is either to take chances on flooding the main motors and thereby losing this ship in the event of a surprise contact, or not to run on the after engines, and lose the much available speed.

5. The bridge polarus, steering repeater and engine telegraphs, and the conning tower and control room shaft tachometers are out of commission for lack of spare parts.

6. The radar mast developed a loud rattle in the housed position.

7. Number one periscope binds in train due to a misaligned bushing. The tender force stated that renewing and reboring this bushing would require navy yard facilities.

8. Yardroom ice box has been inoperative during the entire patrol. This may appear to be a minor item, the lack of an ice box was keenly felt by all officers.

ENCLOSURE (I)

— page 125 —
1. Sweated joint in trim line in after torpedo room carried away due to corroding through. Ship's force effected temporary repairs.

2. The drain line developed about fifteen holes in various places from the control room to the after torpedo room, which were patched with adhesive tape, rubber tape, or wooden pegs. The drain line continues to disintegrate, as was fore seen during the last upkeep period when a renewal was requested. Due to lack of material, the tender was able to renew only 12% feet of the water piping. The continually developing holes made bilge piping most difficult, and the leaking engine exhaust valves did not help matters.

3. The fuel compensator line in the forward engine room developed two corrosion holes. These were patched temporarily, but in the event of deep submergence, it would have been necessary to secure the compensator line. These piping casualties indicate that the life of the salt water piping in the SARGO is limited.

4. The after main engine exhaust valves, both inboard and outboard, leak excessively and uncontrollably. These valves had been resorted by the tender, but after the first couple of dives they were as bad as ever. According to the ship's personnel, trouble has been had with these valves since commissioning. It is believed that the valves constantly with types that have proven satisfactory in service. The life it is true that during in these valves reduces the leaks, and after several grindings in stops all leaks, it cannot be expected that this can always be resorted to in enemy waters. The sand result is either to take chances on flooding the main motors and thereby losing the ship in the event of a surprise contact, or not to run on the after engines, and lose the much available speed.

5. The bridge pelorus, steering repeater and engine telegrams, and the conning tower and control room shaft tachometers are out of commission for lack of spare parts.

6. The radar mast developed a loud rattle in the housed position.

7. Number one periscope binds in train due to a misaligned bushing. The tender force stated that renewing and reboring this bushing would require navy yard facilities.

8. Wardroom ice box has been inoperative during the entire patrol. This this may appear to be a minor item, the lack of an ice box was keenly felt by all officers.

ENCLOSURE (I)

— page 127 —
3CR22  MAJOR DEFECTS (Cont'd)
Prior to this most recent test discharge, other discharges conducted prior to December 7, 1941, and while still at 1,230 gravity, gave the following percent capacities:

December 5, 1941 6 hour rate 95.0%
November 18, 1941 6 hour rate 95.0%
August 7, 1941 3 hour rate 104.1%
April 3, 1941 3 hour rate 104.1%
February 9, 1941 3 hour rate 115.2%
December 16, 1941 3 hour rate 105.3%
August 29, 1941 3 hour rate 113.4%
June 20, 1942 3 hour rate 108.4%
January 11, 1943 3 hour rate 107.4%
November 27, 1943 3 hour rate 107.2%

Prior to October 30, 1939, battery gravity was 1.210.

A steady decrease in capacity is apparent from the above figures. Further invastigation should be made of the condition of this battery during the present stay in port. Discharges could be run while proceeding to and from Albany.

Total croles to date are 475 of which 75.31 were at 1.210 gravity, 28.77 at 1.230 gravity and 114.92 at 1.250 gravity.

19. The overcharge on the forward engines are so foul that they give only about 20% rated capacity, and this water is unfit for drinking due to corrosive salts in solution.

20. All clinkings water on board is more or less contaminated by copper salts, which indicates that fresh water piping is actively corroding and will require extensive removal at the next ward overhaul.

21. A reduction in speed for turns and increased fuel expenditure indicates that the bottom paint is getting old, and that the Dutch paint used in the submarine docking is not standing up.

— page 128 —
2015 June 8 Point Easy, Fremantle 0230 August 3
005L June 15 Lonbeck Strait 2300 July 27
0300 June 19 Gaye /lilliant 0000 July 23
0430 June 21 Fr. Lang Island 0430 July 23
0400 June 23 2. June 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18
0330 June 23 2. June 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18

2. The [NAME] sublist is a great help. No trouble was had in keeping up with water on hand, though a second still, when installed, will add much to the comfort of personnel.

3. The health of the crew was uniformly good throughout the patrol, but it was noticed that after about the fortieth day, fruits and fresh vegetables became a usual topic of conversation. The ship is overrun with cockroaches, and needs fumigation badly.

4. Statistical data:

| Category | Value |
||-------|
| Length of Patrol | 57 Days |
| Service in surface | 7797.9 |
| Fuel used | 85278 |
| Fuel remaining at end of patrol | 5000 (approx.) |
| Tube oil used | 2578 |
| Tube oil remaining | 2400 |
| Navigation miles, surface | 6983.1 |
| Navigation miles, submerged | 1077.5 |
| Total miles | 8375.6 |
| Hours submerged | 593.3 |
| Water used | 2825 |
| Water distilled | 2071.5 |
| Torpedoes expended | 3 |
| Ammunition expended | 3 rounds 3" |
| Food remaining at end of patrol | 10 days |

5. The fact that Tangen Unsang Light, North Borneo, was burning probably indicates that days a re using the passage north of this light. It is certainly a great aid in risking Sibutu from the north to insure keeping clear of Pearl Bank.

— page 129 —
10 0458
SUBMARINE SUBMARINE TRO
FC5-2/38188/A12-1
Serial S-5
U.S.S. SAUCO (38188), Flagship,
August 25, 1942.

SECRET
FIRST ENDORSEMENT
From: Commander Submarine Squadron TWO.
To: Commander Task Force 51.
Via: Commander Submarine, Southwest Pacific.

Subject: U.S.S. SAUCO War Diary of Fourth War Patrol - period June 8, 1942 to August 3, 1942.

1. The Fourth War Patrol of this SAUCO lasted for fifty seven days. The assigned area was in Southern South China Sea. All except eleven days were spent in the assigned area or in passage in waters where enemy targets were to be expected. Only one opportunity for attack developed, however, and this attack was unsuccessful. Considering the inaccurate range data, the small size of the target and the fact that the periscope was evidently sighted just before firing, it is evident that three torpedoes were wasted. This is particularly encumbrance considering the current shortage of replacement. This incident together with the impotency of the 3" gun against an installation similar to that at Iliri demonstrates the need for a larger gun and that it be in the forward position.

2. Material defects no doubt contributed to the lack of success of this patrol. Further efforts are being made to correct these during current overhaul, but it is apparent that SAUCO will require major overhaul and renewal of storage battery in the near future.

JAMES TIPE

— page 131 —
10 0458
Third Indorsement
COMMANDER U.S. NAVAL FORCES
"ESTERN AUSTRALIA
September 5, 1942.

From: The Commander, U.S. NAVAL FORCES "ESTERN AUSTRALIA.
To: The Commander in Chief, U.S. FLIGHT.
Subject: U.S.S. SIX-O' four Fourth War Patrol - Period June 8, 1942 to August 5, 1942.

1. Forwarded. The failure to hit is considered due to (1) control errors and (2) target sighting periscope and then maneuvering.

2. It is noted that no mention is made of the use of sound equipment to obtain a range to the target. It is believed that under the conditions encountered in this contact that use should be made of the sound equipment to obtain ranges.

3. This Task Force Commander consents with the Squadron Commander that in this case three torpedoes were wasted.

A. S. CHAPMAN.

DISTINGUISH:
COUNTRY: (2)
COMBATACE: (5)
COMBATANT: (4)
COMBATANT: (1)
COMBATANT: (2)
COMBATANT: (2)
COMBATANT: (2)
S/M SCHOOL, H.L. (4)
S/M DIV. CO.: (1)
S/M COORD. (1)
EACH S/M EASING V/L (1)

( U.S. NAVY)
4. S. RODDILL,
Flag Secretary.

FILMED

— page 134 —
3
August 3
Returned to Fremantle, west Australia from fourth war patrol.

August 4-23
Upkeep alongside U.S.S. HONOLULU and U.S.S. TRINITY in Fremantle.

August 24
Deperded by N.L.S. SPRINGDALE in Fremantle Harbor.

August 25
Conducted sound test and inspection for air and oil leaks submerged in Cockburn Sound, WA.

August 26
Made final preparations for patrol.

— page 135 —
2000 position Lat 31-568 Long 115-20E
Fuel used 1046

2nd day, August 28 At 0620 made training dive. At 1406 sighted PBY patrol plane.

0800 30-30,18 1200 23-31S 2000 27-57.6S
114-26,5E 114-35E 112-55.5E
Fuel used 4205 Made good 228° 7.2 knots

3rd day, August 29 At 0614 dope. No. 3 main engine exhaust valve leaked faster than the rush pump could pump. At 0635
Surfaced.

0300 25-21,25 1200 24-18,28 2000 22-38S
112-32,5E 112-44,5E 116-35.5E
Fuel 3721 Made good 351° 13.1 knots

4th day, August 30 At 0602 entered Xmasmith Gulf, W.N., and proceeded to Boy of best. At 0916 moored to fuel targe and fueled to capacity taking 3500 gallons. At 1215 underway proceeding out of the gulf and northward. At 1426 identified self to RF patrol, and at 1558 while still in shallow water at the entrance to the gulf identified self to RAAP Whirlaway type patrol.

0300 21-61,28 1200 22-13,53 2000 21-13
114-11,1E 114-09E 113-35E
Fuel 2555 Made good 328° 8.5 knots

5th day, August 31 At 0608 dope. No. 3 exhaust valve leaked badly again. At 0743 battle surface and fired 5 rounds of 3 inch training ammunition. At 0747 dope and at 0743 surfaced. Proceeding toward Loaibok Strait. At 1556 fired 2 rounds of 3" training ammunition to instruct gun crew in night firing.

0300 19-03S 1200 13-10S 2030 16-30S
114-04E 114-10E 114-30E
Fuel 3046 Made good 003° 1.0 knots

B - 1 Enclosure (B)

— page 136 —
6th day, September 1 At 0603 dove, Nos. 3 and 4 exhaust valves leaked faster then the drain pump could pump. At 0616 surfaced. At 1705 dove and found all exhaust valves tight.

0800 14-155 1200 13-353 2000 12-013 115-250 115-403 115-45, 35 115-245 1200 12-013 115-250 115-403 115-45, 35

7th day, September 2 At 0630 dove about 55 miles south of Lombok Strait. At 1002 surfaced. At 2035 made landfall on Lombok Island.

0800 09-453 1200 13-353 2000 09-125 115-450 115-403 115-45, 35

8th day, September 3 At 0150 commenced Lombok Strait passage and completed at 0444. Sighted a friendly type submarine pro- tably at 1100 in Lombok Strait at 0600. Took at dawn. At 0635 sighted tips of two masts and one conning tower, abandoning at 0647 with masts identified as a small sailing vessel. Surfaced at dusk. Continued northerly toward Cape Lander.

0800 6-0155 1200 7-523 2000 7-430 115-565 115-403 115-45, 35

9th day, September 4 At 0045 sighted and identified Sekale Is- land. Dove at dawn, surfaced at dusk.

0900 6-013 1200 5-523 2000 5-443 115-465 115-403 115-45, 35

10th day, September 5 Dove at dawn, surfaced at dusk.

0900 4-113 1200 4-043 2000 3-539 117-565 115-403 115-45, 35

11th day, September 6 At 0405 passed Cape William and headed for Belikpepen. Dove at dawn, surfaced at dusk.

0800 2-205 1200 2-143 2000 2-123 118-203 115-403 115-45, 35

12th day, September 7 Dove at dawn, surfaced at dusk.

'5 - 2 Enclosure (3)

— page 137 —
15th day, September 7th, 0617 dowe in 25 fathoms of water off Balikpapan with exact position doubtful, but believed to be about 5 miles south of entrance, my intention being to concentrate on the southern and eastern approaches during the day. Ran out oil 110 for 5 miles, then north, ran at 1249 sighted the signal tower on Balikpapan and found the I had been covering the entrance in 22-31 fathoms of water. Closest approach to harbor 2 miles, to 10 fathoms of water 2 miles. Surfaced at dusk and cost course 070 and at 2328 during course to 036 proceeding up probable traffic route toward Mangkalhat.

| TIME | DISTANCE | COORDINATES | TIME | DISTANCE |
|-----|||------||
| 0000 | 1-343    | 1200       | 1-173| 2000     |
| 116-50E | 116-52E | 116-52E   | 2000 | 117-08E  |
| Fuel 1098 | fuel good 298° | 4.2 knots |

15th day, September 8th, 0005, visibility fair to g.d., starlight, sighted 2 ships derkando and insaditl. Afterward sighted third ship. On identifed as a medium to large ship, with two destroyers lording in column. Leading destroyer was about 2000 yards away, stopped to avoid closing range, ran estimated on approach to 2,000 yards, but still 2,000 yards away. This was a very close call. The ship was 2,000 yards away, but still 2

— page 139 —
0800 03-11N 1200 03-14N 2000 02-16N
117-54E 117-55E 118-03E
Fuel 1660 1660 6.0 knots

16th day, S. S. Tucker 11 Dove at dawn. At 12:07 sighted Bongo Island and at 1:45 Munk Mark 1 Island, at 1:32 surfaced and commenced pass. etc. At 2:12 when five miles off Bongo sighted friendly type submarine on opposite course, BCLIV.d (letter confirmed) to be S. O. W. 1. At 2:19 changed course to 350 to pass west of Pearl Bank.

0800 04-30N 1200 04-41N 2000 04-47N
119-40E 119-47E 119-46E
Fuel 1542 1542 5.9 knots

17th day, September 12 At 03:00 Changed course to 02:7 for Cagayan Island. Dove at dawn. At 16:22 sighted o. jeet which upon closing proved to be a large floating mass of palm tree, mangrove etc. At 1:05 held bottle surface drill on above debris.

0800 04-26N 1200 04-44N 2000 07-27N
119-43E 119-53E 120-04E
Fuel 1370 1370 5.1 knots

18th day, September 13 Dove at dawn. My intentions are to arrive off Naso Pt., southwest Fnany rt dawn tomorrow and spend the day patrolling this probable flot. This require a surface running, so at 1:34 surfaced. Sighted a large number of floating objects some of which resembled masts and were approached on the surface to identify. At 1702 sighted Cavilli Island at 15 miles and at 1:00 sighted Cagayan Island. At 2:34 set course 030 for Naso Pt.

0800 03-27N 1200 03-35N 2000 09-31N
120-41E 120-44E 120-42E
Fuel 1555 1555 5.2 knots

19th day, September 14 Dove at dawn 5 miles off Nago Island off Naso Pt. and closed in to 5 miles. Patrolled this point during daylight. Surfaced at dusk and proceeded toward Ambulong Island, APO 3ast Pass.

0800 10-22N 1200 10-23N 2000 10-35N
121-52E 121-55E 121-50E
Fuel 1C11 1C11 5.2 knots

20th day, September 15 Dove at dawn 11 miles south of Ambulong Island and proceeded to pass 3 miles off. At 1415 sighted PWR fishing boat fishing boat close in to shore on southerly course. Surfaced at dusk, cleared pass at 23:58 an. set course 2:0 heading for 1at 15-30N Long 117-00E.

B = b
Enclosure (B)

— page 140 —
2000 12-23N
120-54T 120-45T
Fuel 1376 Made good 334° 4.8 knots

21st day, September 16
Dove at dawn and surfaced at 1507 running surface patrol for remainder of day on base course 280.

0800 13-12N 1200 15-00N 2600 15-17N
119-22E 113-12E 113-47E
Fuel 1464 Made good 286° 5.2 knots

22nd day, September 17
Dove at dawn and surfaced at 0628, running surface patrol for remainder of day. At 0758 reached Lat 15-30N, Long 117-00° and changed base course to 270 heading for Lt 15-30N Long 114-30° which was believed to be the eastern edge of probable traffic zone passing east of Tacobersfield Bank.

0800 13-12N 1200 15-05N 2000 15-40N
117-00C 116-27T 115-11T
Fuel 1565 Made good 232° 6.7 knots

23rd day, September 18
At 0135 recorded Lt 15-30N Long 114-30°. Probable courses of enemy traffic are believed 020 ens 210, so decided to patrol across this line in 30 miles along 345 end 255, then move south 16 miles and return to the eastern side on opposite courses of 075 en 170 at 1440 and 0644 ran surface patrol in accordance with this above plan. Reached western side eni started return at 1700.

0300 12-54N 1200 14-20N 2000 14-10N
114-00T 116-45T 116-27T
Fuel 1527 Made good 250° 6.9 knots

24th day, September 19
At 0040 re 054d east en end of assumed traffic zone and changed course to 257 heading for Lt 15-15N Long 113-55° on major traffic lines to westward of Tacobersfield Bank. Dove at dawn, surfaced at 0704 and ran surface patrol. At 1408 arrived in above position and patrolled base course 209T using 10 mile legs 50° to right and left of this base course to widen patrolled path.

0800 13-36N 1200 12-50N 2000 12-58N
112-43E 116-15T 111-37T
Fuel 1334 Made good 240° 4.0 knots

25th day, September 20
Dove at dawn. At 0800 changed course to 239 heading direct or Fulso Oeci De Ier. At 0347 sighted masts and tops of stacks of hull down large ship, estimated

B-6
Enclosure (B)

— page 141 —
0800 11-52N 1200 11-02N 2000 11-52N
11-02S 11-12S 11-02S
Fuel 1211 11-02S 11-02S
26th day, September 21 Dove at dawn, surfaced at dusk. Upon surfacing one lookout reported "a dark object" to the westward in a rein squall. This was not seen by either the COD or myself. Entered rein squall and secured by sound in heavy rein for two hours with no results.

0800 11-52N 1200 11-52N 2000 11-52N
11-02S 11-12S 11-02S
Fuel 825 11-02S 11-02S
27th day, September 22 Dove at dawn. At 0823 sighted mountains south of Padran and at 0915 sighted Pilot Ccair de Ier. Ran toward Ccair on course 239 and at 1045 changed to 180. Surfaced at dusk having covered a progress to Ccair from northeast all day and ran night patrol on NW-SE courses 4 to 3. Isles off 35 end of Ccair.

0800 10-23N 1200 10-23N 2000 10-23N
109-04S 103-02S 108-58S
Fuel 764 103-02S 108-58S
28th day, September 23 Dove at dawn and chain end petrol line to NB-3W 4 miles off SE end of Ccair. At 1504 sighted smoke and commenced approach and attack. Missed. See Enclosure (?) contact #5 for deseription, Enclosure (H) first attack for particular of attack. Target came up course 240, an after maneuvering from torpedoes headed directly for Ccair on course about 230, then followed coastline of island very close in rounding the south point end disap eased to the westward. At 1630 resumed petrol line as stove and surfaced at dusk. At 2039 visibility good, bright moonlight, sighted smoke, bearing about 5 miles east of Ccair. Turned toward an at 2041 saw ship with angle on bow about 25o. Dove to make moonlight periscope approach. At 2047 angle on bow 20o, teesing 20o, range about

— page 142 —
6000, ship identified as destroyer coming up fast. Just as I was about to order a turn out to bring my stern tubes across his track, four deliberate sucessively close depth charges went off astern at 2048, 2048, 2049 and 2051. These could not have come from the ship ahead, and could not have been gunfire since I was looking at him until just a few seconds before the first depth charge. They also sounded like depth charges touching none was close enough to shake the boat. The DD ahc had now heard by sound radio reported approaching rapidity at 210 rpm went deep and turned out. DD ahc had slowed to 150 turns on. at 2105 stopped. From 2114 to 2110 this DD alternately stopped and ran at 150 rpm making one close pass at us at 2122 but with no depth charges. At 2252 came to persist. The DD was now 200 rpm and the depth charge was 2119 T in approximately 2100. He was very careful. At 2342 no start. At 2345 the depth charge was 2100. At 2357 these two started an echo ranging search.

| Time | Depth (ft) | Depth

— page 143 —
0800 10-05N 1200 10-06N 200 10-05N
: 100-55E 110-00E 110-15E
: Fuel 572 1200 110-00E 110-15E
: 2.5 knots

20th day, September 25. .t. 0403 sent out despatched reporting contacts to dte enc at 0149 set course 279 for Cecil de l'er but did not regain that station by dawn. .t. 0509 sighted ship, believed DD, bearing 315 T angle on bow about 50 port, at about 3000 yards. Observed for 5 minutes with no change in bearing, and with the excellent possibility decided to approach submerged. Dove t 0514, but could not find him again. I believe this was in DD probably searching toward the point from which we inc set out despatch, because t 0505 sighted the tip of a single mast with a close next, apparently a DD, bearing rapidly advancing, and last him at 1027. Mooring board solution gave him an approximate course and speed of 350° and 20 kts. .t 1206 sighted masts of ship (no smoke) and commenced ap.reech and attack. Piered at 1200, three trepadoes, 2 observed hits, finally sunk him with gunfire at 1538. See Enclosure (7) contact #0 for description, and Enclosure (H) second attack for particulars of attack. Surfaced at dusk and decided to patrol off shore routes in this general vicinity for tonight and tomorrow to let the inshore crews pool off a little.

0800 10-25N 1200 10-30N 200 10-29N
: 109-55E 109-27E 109-45E
: Fuel 1167 1200 good 305° 1.7 knots

21st day, September 26. Dove at da.n surfaced at dusk on 285 heading for Redaran, and sent out despatched 061200 to CTF 51 end S.S.D.R..GON.

0800 11-15N 1200 11-03N 2000 11-52N
: 110-00E 110-07E 110-00E
: Fuel 1000 1200 good 047° 2.2 knots

B - 9 Enclosure (5)

— page 145 —
35th day, September 29 Dove et dawn, ran 205 all day to.ard Pulo Sapetu against a one knot easterly current. Failed to make a lantern due to poor visibility and an old continuous rain. Seas were very rough, and broached twice during the morning. Surface at dusk. Returned toward Ccair de Mer.

| Time | Location | Weather | Temperature | Wind | Sea Conditions | Ship's Actions |
|------||||------|||
| 10-02N | 109-23E | 10-02N | 2000 | 10-01N | 109-16E |
| 10-02N | 109-23E | 10-02N | 2000 | 10-01N | 109-16E |

35th day, September 30 Dove et dawn ran in to 4 miles off southern end of Ccair, patroling same line as formerly during day. Current was strong westerly, about 1 1/4 knot setting 250. Seas were very rough all day and no considerable depth control trouble. Surface at dusk en head for Pederan. At 2157 was pooped twine and took considerable water in mein induction and hull ventillation. Fire control bar'd in control room was flooded out due to being sprayed with sea water from the ventilation line.

| Time | Location | Weather | Temperature | Wind | Sea Conditions | Ship's Actions |
|------||||------|||
| 10-27N | 109-12E | 10-27N | 2000 | 10-25N | 109-10E |
| 10-27N | 109-12E | 10-27N | 2000 | 10-25N | 109-10E |

36th day, October 1 Visibility was bad all night due to much rain, and therefore made most of the run at slow speed with sound manned. A last determined current of 1 1/4 knot 250 was used in this run, but upon diving at dawn and sighting Pederan at 0655, I found myself in a life of a ship's life. The current did not exist. Commander D'Virion 21 was very annoyed at this failure to be on station - perhaps I was too cautious, but I had the unfortunate experience of putting the TAK ON on the beam in poor visibility during the first of the Sea Sea and I shall always be 'beach-conscious' in low visibility after that experience. After some discussion, decided to stand out toward the offshore lines for the following reasons: (a) the THRESHER was free to be in this area today. (b) STANDARDS report of convoy northbound at Varella last night left little likelihood of any shipping here today (c) my present position would enable me to have only a few hours close in to Pedarran, and I would have to clear at dusk for THRESHER. Absorbingly set course 135. Surfaced at dusk.

| Time | Location | Weather | Temperature | Wind | Sea Conditions | Ship's Actions |
|------||||------|||
| 11-08N | 109-21E | 11-08N | 2000 | 10-40N | 109-28E | 106-49E |
| 11-08N | 109-21E | 11-08N | 2000 | 10-40N | 109-28E | 106-49E |

B - 11 Enclosure (B)

— page 149 —
4th day, October 13
Dove at dawn, surfboard at dusk. At 2300
signed Cape William

| Time | Location | Activity |
|------|||
| 0000  | 00-543   | 11a-50E  |
|      |          | Fuel 35a  |
| 1200 | 11-45W   | Made good 16c° 5,4 knots |
| 2000 | 11-47E   | 4th day, October 14 at C27 when about 7 miles SSW of Cape William, visitility poor, pressed close atoll a clearly identified submarine, range about 50C yards, so.rose approximately north. Dove, was unable to hear him, and due to previous experience of in view then lie to, decided to stay down until dawn. At dawn all oer, and ptrolled parallel to east at 4 miles, passing Cape Namdar at sunset. Surfaced at dusk and proceeded toward Kapcposang Island.

| Time | Location | Activity |
|------|||
| 1200 | 11-45W   | Fuel 36b  |
| 2000 | 11-47E   | Made good 16c° 5,4 knots |
| 2300 | 11-47E   | 5th day, October 15 At 0115 sighted Kapcposang Island and aimed patrol position covering western approaches to Mckasser City. At 1725 sighted large AP bearing 145 T with escort. See Enclosure (?) contact, 15a. as unable to close, nearest ap roach to line 72d off trade. At 11:45 abandoned approach and treiled, surfaced at dusk. Started stern anse with no hope of success as all data can approach indio ted a speed of at least 1/2 knots. Sent out contact descarch ena abandoned dinse at 2100. I had intended to cover the southern approaches to Mckasser City tomorrow, but CTF 51 serial 30 directed me to keep clear so proceeded towr to Derbil Bank to spend one day in that locality.

| Time | Location | Activity |
|------|||
| 1200 | 11-45W   | Fuel 1361  |
| 2000 | 11-46E   | Made good 164° 4,9 knots |
| 2300 | 11-46E   | 51st day, October 16 Patrolled in close vicinity of Derbil Bank during daylight. At dark proceeded towr at 1st 93S in vicinity of Sangeang Island to cover east-west route along the barrier.

| Time | Location | Activity |
|------|||
| 1200 | 11-46E   | Fuel 1336  |
| 2000 | 11-46E   | Made good 196° 2,5 knots |
| 2300 | 11-46E   | 52nd day, October 17 Dove at dawn, surfaced at dusk, h.sded west along 1st 93. |

| Time | Location | Activity |
|------|||
| 1200 | 11-46E   | Fuel 1737  |
| 2000 | 11-46E   | Made good 174  |
| 2300 | 11-46E   | 5,1 knots |
| 2000 | 11-46E   | B-15  |
| 2300 | 11-46E   | Enclosure (B) |

— page 150 —
52rd day, October 18. Dove at dawn patrolling 1st 68's, surfaced at dusk. Heeded for 1st 2000. 2000 116-58E 2000 116

— page 151 —
59th day, October 24 Proceeding Fremantle.
: 0800 29-333 1200 30-083 2000 31-053
: 115-073 113-35E 114-283
: Fuel 3151 Made good 162° 7.5 knots

60th day, 9 October 25 Proceeding Fremantle. 0345 Rendezvoused
with U.S.S. IS-EL or Rottnest Island, 0745 moored to USS
HOLLAND in Fremantle Harbor.
: Fuel 930 Made good 126° 6.6 knots

B - 17
Enclosure (F)

— page 155 —
0-4CS
112-C5E

No. Date and Time Location Description
1 0205 Sept 8 0-4CS  Large ship, probably tanker, escorted by two unidentified type DD cr one DD and one sublcaser. Course 200, speed undetermined, DD making 210' RPM when passed overhead.

2 0623 Sept 9 One mile off rang-Kalhat Light

3 1408 Sept 9 One mile off rang-Kalhat Light

4 0647 Sept 20 11-45N  Large A.P. hull was never sighted, but upper works similar to 11-45N. Course 118 knots, course 026.

5 1542 Sept 23 10-20N  Center island to mast one stack medium AK, 350-400 FT. length, 3500 ton gross, coal burner, de her

6 2048 Sept 23 10-15N  Three or four searching destroyers, unidentified as to type.

7. 0509 Sept 26 10-21N  Unidentif. type perctrling destroyer. Probably one of #6.

8 0358 Sept 25 10-27N  Last only, with crows nest, apparently DD. Course 35C speed 20 from bearings. May be same one as 0509 Sept 25 contact. Probably same as #7.

9 1300 Sept 26 10-21N  Motor AK, 2 masts, single center island, small poop, 1 stack, AA gun on Fo'c's'l'e, empty with propeller breaking water, figure 8 ci simliler character in white on stack, 2 loaded depth charge racks aft, 128 turns for 10 kts., 450-525 ft. length, 7000 tons.

-1  Enclosure (F)

— page 156 —
10:00 Sept 25
Sunk.
Tanzura type DD patrolling.
10 1222 Sept 27 11-0CN
10-037
(3rd Padraean)
11 1443 Sept 27 11-0CN
10-073
Large Ketch rigged sailing
vessel. Lost in rain before
could fully identify.
13 2344 Sept 27 11-4CN
10-278
Unidentified DD patrolling.
Probably same as 5/10, or 13.
14 0200 Sept 23 11-4CN
10-0CE
Two medium to large Ak in
column, course 270, speed 11,
hulls not seen.
16 0330 Oct 3 2-5CN
11-453
Two patrol craft, probably sub-
chasers, hulls not clearly seen,
using stop-go search tactics,
making 350-460 rpm, base course
060. Those were both burning a
bristle orange truck light and
3x600 tube elm-ist ran no down
by a sea going faintest sign of
hull.
17 0287 Oct 14 7 Hills
5-utnwest
O-26
William
17 1723 Oct 15 5-083
11-0CE
Large AR similar Kong Iaru
escorted by unidentified pinging
DD w.lich was not seen except
as ke can not. Zwidently case
-ut 1 lokescar on course 270
arassing 100 fathoms curve at 1et
5-055, then changed course to
30ft. speed 17-20 knots.

P - 2
Encl.
End

— page 157 —
88183-
USS SABRO
-38183-
DESCRIPTION OF AIRCRAFT SIGHTED

Date and Time    Location    Description
August 28    1406    23-09S    113-28E    PBY
August 30    0723    23-09S    113-28E    PBY
August 30    1426    23-09S    113-28E    PBY
August 30    1552    23-09S    113-28E    PBY
August 31    1420    17-45S    114-15Z    PBY
September 27    0422    10 miles    Southeast of    Night contact, plane
    was not seen distinctly,
    directly overhead 500
    feet, apparently re-
    concatssance type burn-
    ing running lights.
    Bright moonlight.

October 20    1111    13-30S    114-15Z    PBY
October 22    1514    27-25S    112-20E    PBY
October 24    0758    29-35S    115-05S    PBY
October 24    1430    30-18S    115-40S    PBY

G - 1    Enclosure (G)

— page 158 —
1942
Time and date: Sighted smoke at 1504. Fired at 1606 September 25, 1942.
Location: 1st 10-30N 102-35E, six miles off Ceorl de Her.
Type Ship: Medium Cargo.
Attack Mode: Dry, periscope.
Target Course: 240
Speed: 10 (used) 12 (used)
Range: 1800 yards 2000 yards
Track: 100P, 142P, 121P 120 Std.
Point of aim: Stack, bow, stern Stack
Maneuvered avd: Yes
Torpedoes number fired: 6
Depth: 6 ft.
Keel depth: 12-14 estimated
Gyro Angles: 32, 30, 31
Run: 1650
Hear: 2200
Head to Run: All
Weather: Overcast, visibility good, light haze, choppy with white caps.
Fire Control: Periscope - TDO - White light.
Results: Missed
Remarks: A careful post-firing analysis revealed that the target was making about four knots to the east. Though he appeared to be on ordnance type of low speed single screw, the torpedoes were fired on a quick set-up course. The fourth torpedo was fired on a

— page 159 —
1. Heard to run: All three.
   - Gather: Clear, bright, sun, choppy with white caps.
   - Fire: Control: Feriscope - TDO - White light.

Results: Two hits, one an "English, one just inside bow, one missed astern. Hits stopped ship, sunk later.

Remarks: Four and a half minutes after firing a loud explosion was heard. This was precisely the third torpedo exploding at the end of the run, though this is the first time a torpedo has been heard at a place and of the run by this vessel. At 1226, 25 minutes after the firing, target was seen to be listing heavily to starboard but apparently not sinking. Maneuvered for a straight tow shot. At 1342 firefarther, torpedo was observed to circle to right rear, large warhead. Torpedo went deeper. Sound bearing of torpedo confirmed the circular run. At five and a half minutes after the firing the torpedo exploded apparently fairly close astern. At 1500 regained periscope depth and found my maneuver had placed me on the other side of the target, maneuvered for a stern shot which required considerable juggling. At 1425 fired first torpedo, striking stern shot (this fish was pulled and examined before firing since the tube had been flooded on the approach and I desired no further experiences with colloid runs and also wanted a positive check on the gyro angle setting if zero). Torpedo port, target course 115 but torpedo depth set 2 feet. Torpedo ran hot, straight and experienced minor damage, was observed to pass under attack. Sound bearings of torpedo throughout run coincided with bearing of attack. The range was about 1000 yards, and after about 15 minutes sound reported that the torpedo was lost in "water noises". Unfortunately the exact time was not recorded. This torpedo may have hit and failed to explode. It was reluctant to use in order torpedo with this doubtful performance, but Commander Submarine Division 21 insisted, so I turned for a tow shot and at 1455 fired the sixth torpedo, target course 115, track 90 port, range 500 yds, depth set zero. Again the we was observed to pass under the stock and again torpedo bearings coincided with bearing of the attack, but this torpedo ran normally to end of run and then faded out with no end of run explosion. In each case the target was known to be stopped since his screw was slowly seen not turning over and there was no change of bearing on the approach, nor any sound of screws. Each of the last two torpedoes were hard set on zero gyro angle before leading.

— page 162 —
1. Renewed main engine cylinder heads from spares as follows:
   - September 5: No. 5 of No. 1 main engine, No. 2 of No. 1 main engine, No. 2 of No. 2 main engine.
   - September 16: No. 4 of No. 2 main engine, No. 5 of No. 1 main engine.
   - October 7: No. 5 of No. 1 main engine, No. 2 of No. 2 main engine.

2. Replaced piston rods and stuffers as follows:
   - September 16: No. 4 of No. 2 main engine, No. 5 of No. 1 main engine.
   - October 7: No. 5 of No. 1 main engine, No. 2 of No. 2 main engine.

3. Replaced auxiliary engine lubricating oil cooler with spare on September 1.

4. Renewed broken safety shear pin on No. 2 main engine supercharger valve sheet and re-rigged two pistons on September 7.

5. Ground in 60° blow valves due to leaks on September 15.

6. Replaced leaking fittings of discharge lines of both high pressure air compressors on September 21.

7. Ground in 60° blow valves again on September 20.

8. Replaced starboard reduction gear oil cooler on October 4th.

The following unrepaired major defects exist at this time:
1. Bow planes can not be made to rig out properly; and growl loudly on tilting. This is particularly embarrassing when trying to run silently.
2. The auxiliary generator is cut or commission due to a zero ground on the compensating winding.
3. Both shafts squeal below 150 feet depth, when making less than 7C turns.
4. The J1 sonic equipment is not sufficiently sensitive, and it is believed that some of the hull mounted microphones are flooded or damaged.

J - 1 Enclosure (J)

— page 163 —
5. High pressure air and 600# blow valves have been ground in repeatedly during the past two years in an effort to keep them tight with the result that the valve seats are worn down and it is becoming increasingly difficult to keep them tight.

6. The exhaust valves on the after main engines cannot be depended on and in all but one instance when diving off the after engines they leaked excessively.

J - 2
Enclosure (J)

— page 166 —
746744
U.S.S. SARCO (SS188) FLAGSHIP
SSMP/A16-3
Serial 0086
October 29, 1942
DEC 3 1942
U.S.S. SARCO (SS188) FLAGSHIP
SECOND ENDORSEMENT TO
CO SARCO Secret Ltr SS188/
A16-3 (07) of 10-25-42.

From: The Commander Submarines, Southwest Pacific.
To: The Commander in Chief, U.S. Fleet.
Via: The Commander Southwest Pacific Force.

Subject: U.S.S. SARCO - War Diary of Fifth War Patrol
Period August 27, 1942 to October 25, 1942.

1. SARCO patrol was not conducted with sufficient
   aggressive intentions. Torpedoes were wasted at excessive ranges and
   opportunities were lost to inflict damage on the enemy indicating
   lack of basic training.

2. When on 8 September SARCO made a contact at fairly
   close range and stopped the enemy, and was subsequently
   unable to gain, the initiative to attain attack position. It
   appears that SARCO could have turned tail to the tankers and escort
   when sighted to prevent smaller ships. Had this been done
   while preparing for surface attack or sound attack submerged if
   forced down. Range might also have been closed immediately and
   torpedo fired at destroyer or convoy prior to submerging.

3. High submerged speed and, in some cases, surface
   running is mandatory in order to close targets when only smoke
   is sighted. On 9 September it appears that high surface speed
   would have enabled SARCO to close range when only smoke was
   visible. Had this been done and followed up by high submerged
   speed when target tops came in sight an attack position might
   have been reached.

4. The decision to rail the target by surface running
   in daylight on 20 September was sound. Had this been done
   immediately upon sighting target instead of one half hour later
   attack position might have been reached.

5. While it is mandatory that every effort be made to
   ensure complete destruction of enemy ships, torpedoes must not
   be fired at excessive range to render coup de grace. On 25
   September the disabled enemy ship was being abandoned and yet
   the fourth, fifth, and sixth torpedoes were fired at 1200, 1800,
   and 900 yards respectively. A range of 800 yards should have
   been attained for the fourth and fifth shots. In this case
   gunfire was finally resorted to. This action could have taken
   place earlier after careful examination without the expenditure
   of the last three torpedoes.

Finished copy.

— page 167 —
U.S.S. SARGO - War Diary of Fifth War Patrol
Period August 27, 1942 to October 25, 1942.

6. All information must be typed or handwritten, not handwritten.

7. Submarines must take advantage of every opportunity for surface patrol in order to increase their range of visibility. There appears to be no reason for SARGO's aircraft to be out of date and 3 October.

8. SARGO is credited with sinking 1 - 7000 ton cargo ship.

DISTRIBUTION:
COLONEL (2)
VICE CAPTAIN (1)
CTONLANTEL (1)
CINOPACFLT (1)
CONSOUBISEPAC (1)
CONSOUBACFLT (1)
CONSUBSPAC (5)
CONSUBSLANT (2)
CONTAGIFOR-51 (1)
CONSUBOR-2 (1)
CONSUBOR-5 (1)
CONSUBOR-6 (1)
DIVOCIS, RON-2 (1)
DIVOCIS, RON-6 (1)
EACH 5/M, W.A. (1)

— page 168 —
1/2-10/16-3/ SUBMARINE FORCE, PACIFIC FLEET (5)(12)
Serial 0112
CONFESSED
CONSULPT OF PATROL REPORT NO. 129
U.S.S. SARGON - SIXTH WAR PATROL.
From: The Commander Submarine Force, Pacific Fleet.
To: Submarine Force, Pacific Fleet.
Subject: U.S.S. SARGON (SS1188) - Report of Sixth War Patrol.
Enclosure: (A) Copy of subject patrol with comments thereon.
1. The SARGON sixth War Patrol was conducted during passage from Brisbane to Pearl Harbor, November 30, 1942, to January 21, 1943. Thirty two of the total of fifty two days were spent in the patrol areas.
2. An all night chase of the convoy sighted December 18, 1942, which had just been attacked by aircraft, might well have resulted in picking off or cripples prior to their reaching their destination.
3. SARGON is credited with the following damage to the enemy:
   - 1 Tanker - 7500 tons
While it is quite possible that this vessel was sunk, the evidence was not fully conclusive.
4. Is the above damage was inflicted prior to the date SARGON joined this force, Commander Submarines, Southwest Pacific Force, is requested to credit this damage on his records.
46029 FILMED
J. H. BRON, Jr.,
Acting.
DISTRIBUTION
(1/2-10/16-3)
List III, 35
Special:
Pl(5), 2N3(5), 2L(5),
Consultant (2), X3(1),
Consubmarine (2),
Subschool, M.L. (2).
T. R. SUBBURNE,
Flag Secretary.

— page 169 —
25-29 October, 1942 - 'At Fremantle, Western Australia.

25 October. Relief Crew and officers from SubRon Six took over ship and commenced partial refit.

28 October. SARGO Officers and crew relieved and took over ship. Partial refit by SubRon Six (FELIAS) completed (a fine job!).

28 October. Lieut-Comdr. E.S. Carnick, U.S.N. relieved Lieut-Comdr. R.V. Gregory, U.S.N., as commanding officer SARGO.

29 October - Underway enroute Brisbane, in accordance with CTG 51.1 operation order (despatch) 260643 of October, as corrected by 270740 and 280540.

29 October. Exercised crew at various exercises and made submerged approaches on U.S.S. LARK before proceeding.

1 November. Passed under Command of CTF 42. Conducted Battery Discharges at Six (6) hour rate.

9 November. Arrived Brisbane, Queensland, Australia.

10-29 November, 1942 - Refit period. At first assisted by U.S.S. FULFUL, but continued after four days by U.S.S. SERRY, divided crew into three leave sections, giving five (5) days to each.

30 November. Deported Brisbane on Sixth War Patrol.

— page 170 —
SS188/A16-3
Serial 001

From:  The Commanding Officer.
To:  The Commander Submarine Force, Pacific Fleet.

Reference:  (a)  ComTaskFor 42 00rd No. S59-42 dated 28 Nov., 1942.
    (b)  ComTaskFor 42 0p Plan No. D-42 dated 21 October, 1942.
    (c)  ComSubPac file FTL-10/A16-3 Serial 01154 dated 7 Oct., 1942.
    (d)  CSSWF file FTL-4/A16-3 Serial 0150 dated 27 June, 1942.

Enclosure:  (A)  Subj. ot War Diary.
    (B)  Track Chart

1. Enclosures (A) and (B) are forwarded herewith.

2. This .pgtrl was conducted in accordance with orders contained in references (a), (b), and (c).

3. Enclosure (A) was prepared in accordance with instructions contained in reference (d). Enclosure (B) was prepared in accordance with verbal instructions of ComTaskFor 42.

— page 171 —
30 November, 1942
1358
1643
1904
2104
2125
2203
2229
1 December, 1942
1636
1912
2340
2 December, 1942
0536
0546
0550
0625
0630
1821
1554

U.S.S. SARGO
-SS183-

PART B
NARRATIVE

Underway from nest alongside U.S.S. SPERRY, with Brisbane River pilot on board proceeding in accordance with CTF 42 Serial 00121 of 29 November, to Area EN.
Pilot left ship.
Passed #1 Buoy aboard to starboard.
Passed Cape Moreton Lt, aboard to starboard.
Made trim test dive to 100 feet.
Surfaced and proceeded to Patrol Area.
Passed thr Point VAN.
Position: Latitude Longitude
2000(Love) 26-535 155-20E
Fuel Used: 906 gallons

Enroute Patrol Area.
Commenced "weaving".
Made trim and training dive, exercised crew at emergency drills and battle stations. Held fire control drill.
Went to test depth 250'.
Made battle surface and fired four (4) rounds of 3" exercise amunition.
KILINGSHIPS, N.L., F.2C, U.S.N., received electrical shock when he came in contact with bus ber of #2 auxiliary perator. He was quickly revived by the Phaeton's mate.
Position: Latitude Longitude
2000(Love) 26-536 154-51E
Course and speed made good (2000-1200) 0409T, 3,6 Kts.
Fuel Used: 2284 gallons

Proceeding to Patrol Area
Made trim dive.
Swung ship for magnetic compass deviations (New compass was installed by USS SPERRY).
Exercised at various casualties.
Surfaced.
Com.erced zig zagging.
Made trimming dive and exercised crew at battle stations. Ran fire control problem.
Made bettle surface. Fired 6 rounds of 3" exercise ammunition.

B - 1

— page 172 —
1. 2 December, 1942
   - 1658
   - 1920
   - 2 December, 1942
   - 0537
   - 0600
   - 1107
   - 1118
   - 1123
   - 1825
   - 1903
   - 1615
   -

— page 174 —
7 December, 1942.
0500-0540
Proceeding to patrol area in neutral lane.
Visibility greatly reduced by heavy rain
squall.
Signed Bonnaville to starboard and New
Ireland to port; but unable to accurately
fix position.
Submerged on St. George Channel - Buka Channel
line and continued north.
Surfaced. Sea glassy but visibility good.
Sighted Fenl Is. Group distance about 25 miles.
Tested out Radar and finally rangd the islands
at 15 miles. Adjusted course to enter South-
east corner of area S(N).
(Note: Fenl Is., Group appears to be six to
seven miles west of plotted position.)
Position: Latitude Longitude
0800(Love) 05-15S 153-55.5E
1200(Love) 05-05S 153-52.5E
2000(Love) 04-40S 153-50E
Course and speed made good:
Fuel Used: 827 gallons

8 December, 1942.
Proceeding to guard southeast corner of Area,
taking cuts on Fenl Is. Group.
Entered Southeast corner of Area to eastward
of Fenl Islands.
Changed course to westward along New Ireland
coast to reach position south of Tanga Is.
for submerged patrol.
Submerged and commenced periscope patrol on
westerly courses.
Closed New Ireland coast to investigate white
smoke which proved to be fire on the beach.
Conducted Fire Control Problem.
Surfaced an. continuing westward between New
Ireland and Tane Is. Sighted several fires
on beach and what appeared to be a green flare.
Position: Latitude Longitude
0800(Love) 03-43.5S 153-09E
1200(Love) 03-43S 153-05E
2000(Love) 03-58S 153-51E
Course and speed made good:
Fuel Used: 970 gallons

B - 4

— page 175 —
9 December, 1942
Continuing westward in Area between New Ireland and Tabar Is. end Lihir Is.
Sighted vessel bearing 355°(R) heading toward us, turned 90° to right to open
track and manned bottle stations.
Dove_to_periscope depth when I realized the
impossibility of attacking this vessel on
surface in the difficult visibility conditions,
since the vessel moved into the dark back-
ground of New Ireland. Sound picked up the
screws which alternately stopped, started and
varied speed. Attempted submerged approach
using sound and both periscopes but sound data
was too irregular and target could not be seen
against island. Vessel was apparently large
petrol type or destroyer (Lat. OC-053, Long.
0259. Surface and proceeded westward. Topped off
storage battery.
0500. Sighted two white rockets on New Ireland.
0557. Submerged and patrolled to westward, sea flat
and glassy.
1928. Surface.
1955. Observed searchlights at Kavieug.
Position Latitude Longitude
0800(Iove) 02-515 151-20E
1200(Iove) 02-463 151-28.5E
2000(Iove) 02-343 151-05.5E
Course and speed made good:
3000T, 4.6 Kts.

10 December, 1942
Continuing westward to establish petrol
non-west of New Hanover to intercept traffic
from and to the Mandates.
0555. Submerged north of New Hanover and patrolled
to westward. Visibility excellent but sea
near I glassy.
1941. Surface-proceeded to southwest.
2000. Observed searchlights at Kavieug.

B - 5

— page 176 —
10 December, 1942 Con't.
    :  Position: Latitude: Longitude
    : 0800(Love): 02-073: 149-593
    : 1200(Love): 02-043: 149-508
    : 2000(Love): 02-083: 149-303
    :  Course end speed made good:
    :  Fuel Used: 894T, 4.5 Kts.
    : 11 December, 1942.
    : 0546: Submerged end commenced periscope patrol.
    : 1025: Visibility greatly decreased by heavy rains.
    : 1942: Surfaced end ran to northward at 5 knots,
    :  and cruising-charging combination. Sky overcast,
    :  heavy rains. Sound gear mended. Ran north
    :  and south during the night.
    :  Position: Latitude: Longitude
    : 0800(Love): 02-245: 149-047
    : 1200(Love): 02-213: 149-053
    : 2000(Love): 02-175: 149-075
    :  Course and speed made good:
    :  Fuel Used: 247FT, 1.9 Kts.
    : 12 December, 1942.
    : 0430: Repaired small (1/8") leak in after trim line
    :  section in mess hall.
    : 0611: Submerged on course 200T.
    : 0647: Sighted masts of ship bearing 293.5° and com-
    :  mended approach on small empty single screw
    : 0720: With range 900 yards, and 75° port track gave
    :  "Standby to fire forward tubes"! but outer
    :  doors were not open. The order to open doors
    :  was given at 0720 and the delay is not yet
    :  uncorrected. (Orders to make tubes ready have
    :  been refused to mean ready in full 293.5°.
    : 0730: Lt. 1-038 Long, 143-55E.
    :  With 2 crn tubes ready observed that with
    :  angle on bow of 135° and range 3000 yards,
    :  so anchored attack.
    : 0740: Heard pinging bearing 300T.
    : 0750: Sighted escort vessel and smoke of ship bearing
    :  283° and commenced approach.
    : 0754: Tergot bearing 281T range 11,000 yards is
    :  about 8000 ton AK. Patrol vessel roving.
    : 0304: SC passed ahead range about 1000 yards.

B - 6

— page 177 —
1942 CON'T.
0320
Sighted second AK, about 6000 tons. Lead-
ing AK has zlzged away angle on bow 100°
port, range 5000 yards.
0359
Shifted tracking to second AK, now bearing
2300T, range 4000 yards, angle on bow 70°
port. (Both targets have zlzged toward us).
0352
Petrol vessel pinging.
With second AK bearing 192°T range 2500 yards,
angle on bow 115° port and making ready for a
possible long range spread, target zlzged
about 20° away. Stood to southward after ter-
gets until 1015 then changed course to north
to get back on what appears the traffic route.
Sighted mast, lat. 0-15S Long. 143-51E, be-
ing 094°T while proved to be three (3) FUBUKI
(DD's) in column making 17 knots (196 rpm),
range about 10000 yards. Con enced tracking
and closing on various courses.
1123
Secured tracking, minimum range on leading DD
0500 yards and on third DD about 5000 yards,
DD's on course 350°T.
1155
Sighted plane NITSUBIISHI 98 bomber, 1st. 02-12S
Long., 143-51.5E, bearing 350°T, 4000 yards,
course north.
1942
Surfaced end patrolled on 70°-250° (away and
into 1000 m) six knots.
Position: Latitude Longitude
0800 (Love) 02-08S 148-54E
1200 (Love) 02-12.5S 148-52.5E
2000 (Love) 0-20S 149-14S
Course and speed made good:
293°, 0.75 Kts.
Fuel Used: 559 gallons

— page 179 —
14 December, 1942, Cont't.
1940
2050
2102
21C
15 December, 1942
0610
1944
16 December, 1942
0033
0500
0833
1834

U.S.S. SARGO
-SS16-
NARK TIVE

Proceeding westward, north of ADM1:ALTY IS.
at 12 knots to new station.
Changed course to southward with MANUS IS on port quarter.
Patched leaking section of trim line in mess room again.
Submerged on course 190°T.
Sighted BUM IS, bearing 230°T, distance 40 miles.

B - 9

— page 181 —
18 December, 1942, Con't.
Position: Latitude: Longitude:
0800 (Love) 03-44, 53 145-24, 5E
1200 (Love) 03-363 145-19, 5E
2000 (Love) 03-448 145-18, 5E
Course end speed made good:
Negligible
Fuel Used: 579 gallons

19 December, 1942.
Patrolling station, cruising-charging combination, six knots, away from and into bright moon.
Submerged.
Surface and patrol led to westward of center of station.
Executivc officer sighted strek*in water which he had utilized as torpedo wake apparently passing under ship. Clear, calm, moonlit night and no windstreaks - Cleared inmediate vicinity with radicat turns and increased speed - Slocing occasionally to listen with scuth.
Position: Latitude: Longitude:
0800 (Love) 03-393 145-25E
1200 (Love) 03-283 145-1.5E
2000 (Love) 03-415 145-24, 5E
Course end speed made good:
Negligible
Fuel Used: 537 gallons

20 December, 1942.
Cruising-charging combination to westward of assigned station of SCHOUTEN ISLAND.
Submerged and patrolled vicinity of assigned point.
Surface.
Position: Latitude: Longitude:
0800 (Love) 03-403 145-12E
1200 (Love) 03-435 145-16E
2000 (Love) 03-458 145-22E
Course and speed made good:
Negligible
Fuel Used: 529 gallons

21 December, 1942.
Cruisig-charging to westward of assigned point of SCHOUTEN ISLANDS.
Submerged and patrolled station.
Surface and patrolled to southwest of station 0.0,D. (Lt. L. Lajeunie) sighted what he identified positively as periscope close aboard on port bow. Put rudder herd left end increased speed clearing immediate vicinity.

— page 182 —
21 December, 1942
PART B
NARRATIVE

Nothing sighted thereafter; no sound contacts.
It would appear that we are sharing this area
with a Jap.Submarine.
Position Latitude Longitude
0800(I love) 05-38S 145-18.5E
1200(I love) 05-38S 145-18E
2000(I love) 03-43S 145-14E
Course and speed made good:
NEGLIGIBLE
Fatal Use: 613 gallons

22 December, 1942.
Cruising-arching to westward of assigned
sighting point.
Submerged and speeds for night to enter
Area "A" at time of diving tomorrow.
Position Latitude Longitude
0800(I love) 03-32S 145-22.5E
1200(I love) 03-36S 145-20E
2000(I love) 03-40S 145-22E
Course and speed made good:
NEGLIGIBLE
Fuel Used: 629 gallons

23 December, 1942.
Cruising-arching to southward of formerly
assigned point and just north of Area "A".
Submerged.
Entered new Area "A", and stood to southeastward toward KAKAR.
and BAGABAG IS.
Surface an proceeded toward ISUMRUD Strait
to be in position off MADANG at dawn.
Position Latitude Longitude
0800(I love) 04-03.5S 145-37E
1200(I love) 04-13S 145-43E
2000(I love) 04-23.5S 146-04E
Course and speed made good:
NEGLIGIBLE
Fuel Used: 168; 1.6 Kts.
566 gallons

B - 12
ENCLOSURE (A)

— page 183 —
3.3RG0
-3318C
PART B
24 December, 1942.

Proceeding thru ISU2RD Strait cruising-carrying on to main engines.
Cleared Strait.
Number one main engine out of commission with water leak.
Number one main engine back in con.issioth.
Submerged and petrolied entrance to ISU2RD Strait just north of MADAG.
Surfaced and petrol.led in path of moon south of ISU2RD Strait.

Position: 0500 (Love)
Littitude: 05-09.55
Longitude: 15-05E
Latitude: 05-10S
Longitude: 15-56.5E
Latitude: 05-04S
Longitude: 15-07E

Fuel Used: 154*, 2.55 kts.
500 gallons

25 December, 1942.

Petroling south of ISU2RD Strait on surfaco, cruising-charging.
Celebrated Christmas with Carol singing, Santa Claus dispensing presents, and an excellent turkey dinner.
Submerged and petrolied off MADAG. Frecuent rain squalls greatly reducing visibility.
Made out houses on beach north of MADAG, no sign of shiping. Sighted columns of white smoke at various points along shore, apparently wood fires.
Surfaced and petrolied in path of moon. Difficulty rigging in bow planes final y cleared at 2050 by external greasing.

Position: 0611
Littitude: 05-03S
Longitude: 15-03E
Latitude: 05-03S
Longitude: 15-56E
Latitude: 05-05S
Longitude: 15-06E
Coursa and sea mede good:
Negligible
Fuel Used: 509 gallons

Fuel Used: 509 gallons

B - 13

ISU2RD (1)

— page 185 —
1942 CONFIRMATION
PART B
28 December, 1942
00:20
1000
1956
29 December, 1942
0555
2007
30 December, 1942
0610
1236
1240
1257
1305

U.S.S. SARG
- SS18J-

NARRATIVE:
Cruising periscope patrol south-west of TING.ON IS. Visibility poor due to frequent rain squalls.
Sighted aircraft, Jap Reconnaissance Bomber 95, bearing north, distance about 2 miles, on easterly course. Lat. 02-505 Long.149-153.
Surfaced, Visibility continues poor. Adjusted position to dive south of TING.ON IS.
Latitude Longitude
00:00 (Love) 02-52S 149-153
12:00 (Love) 02-44S 149-172
20:00 (Love) 02-51.55 149-29S
Course and speed made good:
045°, 5.2 Kts.
1339 gallons

Fuel Used:
Submerged and petrolied from south of TING.ON IS. to exosward. Visibility poor during for. noon.
Sun raced and petrolied cruising-cherging south of pass between TING.ON IS. and NE. HANOVSK.
Sighted searchlight beam in direction of K.VING.
Position Latitude Longitude
00:00 (Love) 02-51.55 149-44.5S
12:00 (Love) 02-44S 149-54S
20:00 (Love) 02-50S 149-53S
Course and speed made good:
096°, 1.6 Kts.
584 gallons

Fuel Used:
Petrol. ing cruising-cherging south of pass between TING.ON IS. and NE. HANOVSK.
Submerged and petrolied in passage between TING.ON IS. and NE. HANOVSK.
Sighted smoke bearing 333°T, ch.nged course to close.
Commenced her ring steady pinging.
Battle Stations. Sighted convoy, range 14000 yards, south bound; identified later as TIDORI (DD), 2 small AK's, and 5 small coastal tankers.
Formation zig zagging radically on long legs.
Observed convoy with 60°F angle on bows (course 210°) bearing 330°T and came to 270°T and made six knots. This was when I was badly taken in by their zigs for at

B - 15

ENCLOSURE (A)

— page 186 —
1942 CONFIRMATION
PART B
NARRATIVE

50 December, 1942 Cont.
The formation commenced zigging to left
finely averaging about course 140°T.
Came to course 100°T and attempted to close
but at
The minimum range on the nearest target
(a small coastal tanker) was about 4000
yards, too much for the Mark.X's. Lt. 02-38S
Long: 149-43.5B.
Searched tubes and Battle Stations, there be-
ing no further hope of at-axking this convoy.
Surfaced sand patrols and south of passage,
cruising-chainging.
Sound reported screws; maneuvered to investigate
without success until 2200.
Position
Longitude
08:00 (Love)
02-36S
149-42.5B
14:00 (Love)
02-35S
149-52.5B
20:00 (Love)
02-42.5S
149-59.5B
Course and speed once good:
Fuel Used: 075°, 1.5 Kts.
555 gallons

31 December, 1942.

Petrol: cruising-charging south of TINGWON
ISL.N.D.
Submerged end commenced petrolling near center
of TINGWON-NZ HANOVSR Passage. Visibility
excellent, sea choppy.
Sighted mast of ship, Lat. 02-39S Long. 149-
59E, bearing LOO-30° T. range about 10,500
yards: and commenced approach.
Fired spread of four torpedoes from bow tubes
at target (7500 ton tanker) range 900 yards.
Heard and felt heavy explosion followed at
by three much weaker disturbances. Had been
unable to observe target due to poor depth
control so went to 250 feet and rigged for
depth charges. (See description of Attack 1
part (H).) Believe target sank.
Continued observations at periscope depth and
continued to southwestly until
Went to 100 feet to reload forward tubes and
repair broken lub line to #1 main motor after
bearing while running on port shaft.
Repairs completed to main motor bearing, -
running at periscope depth.

B - 16
ENCLOSURE (A)

— page 187 —
31 December, 1942 Cont't.
2003

Surfaced and patrolled cruising-charging
south of passage. Visibility very poor, low
heavy, clouds, heavy swells.
Position: Latitude Longitude
0600 (Love) 02-39S 149-59E
1-00 (Love) 02-43S 149-54.5E
2000 (Love) 0-49S 149-52.5E
Course and speed made good:
1.6E°, 0.35 Kts.
Fuel Used: 569 gallons

1 January, 1943

Petrolling cruising-charging south TINGWON-
NEW HANOVER Passage.
0300
0.0,0, sighted submarine on port beam, range
estimated at about 2000 yards, on approximate-
ly reversed of our course and merging with the
extremely poor background in that direction.
Next right full rudder, port ahead full. I
recaied the bridge at time swing was being
completed and ordered tubes 7 and 8 ready,
but then estimated that range and angle on
low on the now barely visible target were
too great for snap shooting.
Reversed course and attempted to close target,
at two engine speed.
Abandoned chase having lost target at about
0340 In background of TINGWON IS.
0608
Submerged and patrolled passage. Visibility
2002
poor due to frequent rain squalls.
Surfaced and patrolled south of passage.
Position Latitude Longitude
0800 (Love) 02-43S 150-02.5E
1200 (Love) 02-43S 150-10S
2000 (Love) 02-42.5S 150-02E
Course and speed made good:
0900T, 5 Kts.
Fuel Used: 635 gallons.

B - 17
ENGLISURF (A)

— page 189 —
3 January, 1943
PART B
NARRATIVE

3 January, 1943
Lost sight of SC in rain, he is proceeding northward in passage at about 15 knots.
Surfaced and patrolled south of passage.
TDC back in con.ision.
Position:  Longitude
0800 (Love) 02-44S 150-07.52
1200 (Love) 02-23.55 149-59.53
2000 (Love) 02-47.55 150-05.55
Course and speed made good:
NEGLIGIBLE
Fuel Used: 546 gallons

4 January, 1943
Patrolling cruising-charging south of TINGWON.
MY WAY NOVICE Passage.
Submerged and patrolled passage.
Sighted Destroyer and large vessel, Lt. 02-46S
Long 150-07, bearing 082T range 11000 yards
conescaped across.
Convoy sighted 30° giving a minimum range
of 2300 yards when angle on bow was 95° port.
Secured tubes and butte stations. Sound
conditions were very poor during this cross.
Traps passed out of sight in haze.
Surfaced and patrolled to southwest of passage.
Position:  Longitude
0800 (Love) 02-43.55 150-05.55
1200 (Love) 02-44.55 150-09.55
2000 (Love) 02-55S 150-06S
Course and speed made good:
NEGLIGIBLE
Fuel Used: 579 gallons

5 January, 1943
Patrolling cruising-charging south of TINGWON.
MY WAY Passage.
Submerged and patrolled passage and to eastward.
Visibility poor due to frequent rain and squalls
and sea rough enough to make depth control difficult.
Surfaced and patrolled south of passage.
Observed searchlight bearing 080°T, probably
KAVITON. Running in frequent heavy rain squalls.
Position:  Longitude
0800 (Love) 02-46S 150-20T
1200 (Love) 02-46S 150-14T
2000 (Love) 02-42S 150-04T

R - 19
ENCLOSURE (A)

— page 190 —
5 January, 1943, Cont't.
: Course and speed read good:
: 5,000 gallons
: Fuel Used:
: 5,000 gallons
: 6 January, 1943:
: Patrolling cruising-charging south of TINGWON-NEW HANOVER Passage.
: 0200: Received Daily Information despatched from CTF 42
: 0234: Charged course to 270°C end went ahead on four
: 0627: Main engines continued westward to Maru's ex-
: 1250: Steered course and continued westward to Maru's ex-
: 1455: Steered course to 260°T on Maru's estimated
: 1512: Battle Statistics; 1500 ammended
: 1550: Target bearing 065°T, range 5100 ammended
: 1602: Still abaft course and 1500 ammended
: 1314: Still abaft course and 1500 ammended
: 2000: Course and speed read good:
: 2000

— page 191 —
1943, Con't.
0606: Submerged and patrolled to westward - still
    hoving.
1218: Give up hope of again meeting CV and changed
    course to put us back in TINGWON vicinity
    for next days' patrol. Visibility very poor.
1955: Surfaced.
2020: Sighted glow of light bearing 320-30T. and
    by -
2110: 'I'ade out all proper lights of large hospital
    ship on course about 135T., running dead slow.
2200: Continued to northwestward.
    'Position: Latitude. Longitude
    0800 (Love) 04-00S 150-45S
    1200 (Love) 04-00S 150-37S
    2000 (Love) 02-07.5S 150-27S
    Course and speed made good:
    Fuel Used: 126.5T. 5.5 Kts.
    1738 gallons

8 January, 1943

Regaining position in TINGWON-NE. HANOW R
0609: Passage - cruising - charging.
    Submerged and patrolled passage, but visibility
    conditions made patrol very ineffective today.
    Heavy swells and whitecaps. Stood to northwest
    in passage and crossed into 3(N) about sunset.
1943: Surfaced and proceeded northwest across area
    3(N). Enroute Pearl. Cruising-charging at
    six knots. Steady sein, visibility remaining
    1000 yards or less all night. Decided to
    attain post'f on for tomorrow's dive on line
    IS. Consider tonignt's position too close to
    former area and position of tomorrow's dive
    to warren sending desatn to CTF 42 reporting
    results.
    Position: Latitude Longitude
    0800 (Love) 02-40S 150-35
    1200 (Love) 02-34S 143-55E
    2000 (Love) 02-15S 142-45S
    Course and speed made good:
    Fuel Used: 034T, 4 Kts.
    036 gallons

B - 21 ENCLOSURE (A)

— page 192 —
9 January, 1943.
Proceeding thru message between TUNCH and
ZHAU IS, cruisin -ohrging, in heavy
rein storm.
0616
1910
2317.
Submerged controlled to northward.
Surfaced and proceeded to eastward, enroute
P'RL, on four engines.
Sent despatched to CTF 42 reporting results of
petrol in various areas in BIZARK ARCHIP'LLGO.
Position
0800 (Love)
1200 (Love)
2000 (Love)
Course and speed made good:
Fuel Used:
10 January, 1943
Proceeding eastward on four engines.
0800
0920
1900
Commenced zic zaging.
Sky mostly overcast, many low clouds; named
KAD R.
Secured KAD.R and zic zaging and slowed to
two enemys speed.
Fuel Used:
11 January, 1943
Proceeding eastward, enroute FZAL, on two engines.
0803
0925
Commenced zic zaging.
Made trim dive.
Surface and continued zic zaging - using RADAR
when clouds are low overhead.
1100
Fascd under the operational control of 7th and
Task Force SWL.
1740
Crus. and Tractor at Long. 161-58T5.
Postion
0900 (Love)
1200 (Love)
2000 (Love)
Course and speed made good:
Fuel Used:
0357T, 14.5 Kts.
2959 gallons

B - 22
ENCLOSURE (A)

— page 193 —
12 January, 1943.
Proceeding eastward, enroute F.R.L.
Com. enced zig zaggin' and manned RAD.R.
Secured AD.R. and ceased zig zaggin'...
Comm. enced running on one main engine.
Position: Latitude Longitude
0300 (Love) 00-40N 154-40N
1300 (Love) 00-51N 165-17S
2000 (Love) 01-19.5N 165-26S
Course and speed made good:
Fuel Used: 075°T, 11.4 Kts.
2001 gallons

12 January, 1943.
Proceeding eastward, enroute F.R.L.
Made trial dive.
Surfaced.
Comm. enced zig zaggin'.
Heavy clouds overhead; manned RAD.R.
Sighted KV/MISHI 97, 4 engine patrol bomber,
bombers 700°T, distance 6 miles, on southerly
course. [FUEL: distance 6 miles, on southerly
with lookouts sighting. Bomber banked and
headed toward us. Drove to 150 feet and eltored
course to north.
Placed to periscope deeth and observed bomber
circling our position about 2 miles. Went
bomber to 100 feet.
Herald detonations of three depth charges or
bombs about ten seconds apart, on starboard
bw fairly distant. Ran at 150 feet. Number
three main engines flooded due to leaky exhaust
valve. Radio hourly periscope observations;
LOW HEAVY clouds. Dedicated not to surface until
sunset.
Set all clocks ahead to (-12) time.
Juifaced and proceeded on four engines.
Position: Latitude Longitude
0800 (Love) 03-01N 163.22
1200 (Love) 03-03N 163.22
2000 (Love) 03-16.5N 163.22
Course and speed made good:
070°T. 9.0Kts.
Fuel Used: 2345 gallons

14 January, 1943.
Proceeding to eastward, enroute F.R.L.
Comm. enced zig zaggin' and manned RAD.R. while
low clouds were overhead. Slowed to two engines
for remainder of run to PARL, since fuel remaining
maining will not permit a three or four engine
running with a safe margin.
B-23
ENCLOSURE (A)

— page 195 —
3 CONFIDENTIAL
PART B
NARRATIVE

16 January, 1943, Con't.
Position: Latitude: Longitude:
0800 (Yoke): 1C-22.5N 176-01W
1200 (Yoke): 10-44N 175-28W
2000 (Yoke): 11-50N 174-17.5W
Course and speed made good: 056°T., 10.7 Kts.
Fuel Used: 27°1 gallons

17 January, 1943.
Proceeding northeastward, in route P'ARL, on two engines.
Sent despatch to CTF T reporting executed arrival on PERAL and TONSTON. Circles and daily positions.
Number one engine out of commission; Supercharger sheen pin casualty.
Con. enced zig zagging.
Number one main engine back in commission.
Number four engine in commission. Holding control. Her main drill each night until arrived.
Position: Latitude: Longitude:
0800 (Xray): 12-31.5N 172-47W
1200 (Xray): 12-51N 172-12W
2000 (Xray): 12-28N 171-00W
Course and speed made good: 056°T., 8.5 Kts.
Fuel Used: 303d gallons

18 January, 1943.
Proceed along north-eastward, enroute P'ARL.
Made 12m Dive. 45 main engine outbreak exhaust valves brake badly inspite of daily rubbing in.
Surfaced. Zig zagged and used RAMM for brief period.
Position: Latitude: Longitude:
0800 (Xray): 14-41N 133-11W
1200 (Xray): 15-02N 168-55W
2000 (Xray): 15-29N 167-91W
Course and speed made good: 056°T., 10.5 Kts.
Fuel Used: 26C1 gallons

19 January, 1943.
Proceeding northeastward, enroute P'ARL. Zig zagged and used RADAR for short period.

— page 197 —
21 January, 1943, Corf. Proceeded to PEARL with escort. Position: 0900 (William) 21-02N 158-20W 1200 (William) 21-21N 157-57W Course and speed made good: 055°T, 10.2 Kts. Fuel used: 1721 gal.

— page 200 —
1940, January and February, 1941, seemed to be quite accurate.

Specifica-ty, the currents found were as follows:

(a) N.S. Coast NEW IRELAND - (early Dec.) 26 miles per day setting SE.
(b) Between NEW HAVEN and MASSACHUSETTS - (middle Dec.)
None.
(c) Vicinity 20.0UTEN ILLS - (middle Dec.) slight S.
(d) Off MADANG - (latter Dec.) 24 miles per day setting 1700.
(e) Passage between TINAGON Group and W. HAVEN IS. (early June, 1941) strong and reversible, 1N and S, 24 to 48 miles per day.
(f) TINAGON Group to TAKIN ISLAND - (mid-January) 24 to 36 miles per day setting N to BNE.

— page 205 —
U.S.S. SARG0
: -SSL88-
: SHIPS SIGHTED

Sight-ing No. | Date | Type | Range | Course | Speed (RPM) | Visi- | Est. | Length | Mot. Height
---|---|---|---|---|---|---|---|---
11. | 31 Dec. | C2-33S | A0 | 1°00 | 310° | Excel- | 480'-90' | 15.5 | 1.5
0735 | 149-59E | 7500 | 900 | 13.5 | (112) |  |  |  |  |
12. | 1 Jan. | 02-43S | SS | 2000 | 200? | Light |  |  |  |  |
0259 | 149-49E | 2000 | 1200 |  |  |  |  |  |  |
13. | 2 Jan. | 02-35S | DD | 1600 | 230° | 340'-75' |  |  |  |  |
1617 | 149-52E | 900 | 7.5 |  |  |  |  |  |  |
then pass over
Remarks: |
14. | 2 Jan. | 02-35S | AK | 1600 | 230° | 340'-80' |  |  |  |  |
1617 | 149-52E | 4000 | 4000 | 7-3 |  |  |  |  |  |
Remarks: |
15. | 3 Jan. | 02-35S | AK | 1600 | 230° | 340'-80' |  |  |  |  |
1517 | 149-52E | 4000 | 4000 | 7-3 |  |  |  |  |  |
Remarks: |
16. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
17. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
18. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
19. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
20. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
21. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
22. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
23. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
24. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
25. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
26. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
27. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
28. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
29. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
30. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
31. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
32. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
33. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
34. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
35. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
36. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
37. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
38. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
39. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
40. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
41. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
42. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
43. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
44. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
45. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
46. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
47. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
48. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
49. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
50. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
51. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
52. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
53. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
54. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
55. | 3 Jan. | 02-35S | SC | 900 | 230° | 340'-80' |  |  |  |  |
1330 | 150-00.5E | 170 | 2400 | 15 |  |  |  |  |  |
Remarks: |
56. | 3 Jan. | 02-35S | SC | 900 |

— page 206 —
15. 4 Jan. 02-43S DD 11000 305° Fair 340°-75' 0955 150-07E 4500 10° Kts Heze
Remarks: Hatsuharu Class, light war color, white stack markings, pinings.

4 Jan 02-43S AK 11000 305° Fair 430°-90' 0955 150-07E 6000 3500 10° Kts Heze
Remarks: Modern, 8000 tons, single stack single screw, cli burrier, gun aft, double deck, ports.

16. 6 Jan 02-35S CV 10000 170° Poor 700' (no 1456 148-50E 5100 17.5 Kts Rain to stack
Remarks: Silhouette like Koryu, but appear ed larger, no planes on deck.

6 Jan 02-35S DD 10000 170° Poor 700' 1456 148-50E 5100 17.5 Kts Rain
Remarks: Class or details not observed.

17. 7 Jan 03-57S AH 12000 135° High 2000 150-12* 10000(?) 3500 3-8 Kts Good
Remarks: Large properly lighted hospital ship, single stack.

F - 5
ENLISTED (A)

— page 210 —
1. Slow convoys making 11 knots or less use ex-tremely radical zigs; changing course as much as 120° and remained on legs of zig plan for 15 minutes in some cases. Faster convoys used smaller changes of course and made more frequent zigs. The two AKs sighted 12 December, 1942, were apparently running sine curves independently of each other.

2. It is very probable that the Japanese sometimes resort to sending an empty valueless vessel ahead of a convoy as a decoy. My attempted attack on a small AK (orA/S vessel) on 12 December, prevented my closing the convoy that immediately followed it.

3. Convoys in the vicinity of New Hanover used a single destroyer or subchaser as escort. Even in the case of the eight AKs and AOs on 30 December, 1942, Escort vessels pinged almost continuously at 7 second intervals on 16 Kcs. Escort vessels took a roving station, but sometimes led the column.

4. Japanese were using submarines as A/S vessels in the Bismarck Archepelago Area. Two contacts were made at night, one of a periscope in the Schouten Escort, vicinity and one of a submarine on the surface in Area E(SW).

5. The behavior of the large hospital ship sighted the night of 7 January, 1943, suggests that this vessel was making a sound and/or a visual survey of the area. She plotted as stopped or making less than five knots and changed course twice while in sight for over one hour and a half.

6. The several small coastal tankers of 1000 tons or less seen in convoy on 30 December, 1942, are the first of this type seen. Their size gives some protection to a valuable cargo.

7. Only a few AKs were camouflaged, and those were ineffectively so far as submarine approaches are concerned.

8. The two pairs of smoking vessels observed in E(N) on 14 December, 1942 may have been a decoy scheme. They remained in sight as columns of smoke too long for vessels crossing the area, and mooring board study over long periods indicated courses difficult to attribute to north or south bound traffic.

— page 213 —
1. Radio reception and transmissibility were very good through the patrol, and no difficulties were experienced in getting through the water. The addition of two 50-ton casemate torpedo tubes and a deck gun on the deckhouse, but the forward torpedo tubes were not in operation at the time. Messages were received from 42 ships (SMS, SSN, and LHD with the exception of 2 ships). The messages with no serial numbers were received during the patrol.

2. No adverse temperature gradients or pronounced density layers were encountered during this patrol.

3. Sound conditions were poor most of the time. The equipment was in good order but being close to shore and having more rain than usual and occasional rough weather, were responsible for a rather high noise level.

4. Health and habitability were excellent throughout the patrol.

5. The Rheinstadt still was the source of all torpedo and battery water. The water produced in both cases was excellent, but it is not in good condition still is re-claimed in the 490th hour. The air conditioning condensate was used by the crew for wash purposes.

— page 214 —
5. Several shear pin casualties on fl amin engine were experienced during this patrol. These casualties occur when the rabbit band of the piston disintegrates or rings break are blown through the exhaust ports. This engine is in need of an overhaul having had some fifteen hundred hours.

6. A leak which developed in the trim lin in the after battery compartment was temporarily repaired by a C-clamp and patch. This hole became enlarged as the patrol progressed. The trim line has had other leaks of a similar nature during past patrols. The renewal of the trim line has been made the subject of a Navy Yard work request.

J - 3
ENCLOSURE (A)

— page 218 —
1. Commander Submarine Squadron TWO.
Serial (059) c/o Fleet Post Office,
San Francisco, Calif.
C-O-N-E-I-D-E-N-T-I-A-L
21 July, 1943.

FIRST ENDORSEMENT to
CSD21 Lt. FBS-21/A16-2,
Serial 018, of 20 July, 1943.

From: Commander Submarine Squadron TWO.
To: Commander Submarine Force, Pacific Fleet.

Subject: U.S.S. SARGON - Report of Seventh War Patrol -
Comments on.

1. The seventh patrol of the SARGON was aggressively conducted, all contacts being vigorously pursued; the weather being a greater detriment to the SARGON than enemy counter action.

2. It is noted with pleasure that good use was made of the bathytherapgraph in evading a well conducted anti-submarine search and attack.

3. The reconnaissance of "OLGA" showed good planning and judgment. A range of less than 4,000 yards permitted close inspection which showed little evidence of enemy activity.

4. The work of SUTTON, James Elvis, RHO, in maintaining the radar so that with one possible exception contacts were held to seven and one-half miles is commendable. Every opportunity must be taken, however, to give the operating personnel unceasing instruction in the peculiarities of this equipment under service conditions.

5. The Squadron Commander congratulates the Commanding Officer, officers and men on a successful patrol which resulted in the sinking of 14,333 tons of enemy shipping.

C. B. MOMSEY.

— page 219 —
1955-21/A16-3/ejm
Serial 016
C-O-N-E-F-I-D-E-U-T-I-A-L
From: The Commander Submarine Division TWENTY-ONE
To: The Commander Submarine Force, PACIFIC FLEET.
Via: The Commander Submarine Squadron TWO.
Subject: U.S.S. SARCO - Report of Seventh War Patrol - Comments on.

1. The SARCO spent a total of forty-two days on this patrol, of this time only six days were actually spent in the assigned area; the remainder being spent enroute to area, developing contacts in vicinity of area, and enroute base from area. This patrol was terminated early due to heavy expenditure of fuel on surface chasces.

2. This, the second patrol of the present commanding officer, and the first patrol subsequent to a lengthy navy yard overhaul, was an aggressive well conducted patrol.

3. Attacks:
   (a) The four misses on the attack on the large tanker on June 12 were undoubtedly due to a large speed error. It was unfortunate that the T.D.C. was not functioning for a speed check, especially in view of the variation between plot and the turn count. It seems reasonable to assume that a tanker as large as this would make over ten knots.

   (b) The attack on the convoy (June 13) was aggressively and well conducted.

   (c) The third attack (the second on the above convoy) was also a well conducted and tenacious attack. It was unfortunate, but understandable, that the SARCO could not remain at the position despite the determination whether this ship was sunk or damaged.

   (d) The fourth and fifth attacks were undoubtedly frustrated due to bad visibility and also to the possibility of having been sighted.

— page 220 —
20 July, 1943.

Subject: U.S.S. SARGO - Report of Seventh War Patrol - Comments on.

4. It is of interest to note the Commanding Officer's comments in paragraph 8(a) pertaining to enemy zig-zags.

5. The SARGO is being refitted at Midway and will be ready for sea after a normal refit.

6. The Division Commander congratulates the Commanding Officer, officers, and crew of the SARGO for the successful conclusion of an aggressive and tenacious patrol.

G. O. HUNPHIRYS.

— page 221 —
1. CONFIDENTIAL
U.S.S. SARGO (SS186) Report of Seventh War Patrol. Period from May 27, 1943 to July 9, 1943. Area Ten-Able. Operation Order No. 92-43 (Contaskefor 17).

FROLOUZ

Jan. 21, 1943: Arrived Pearl Harbor from Sixth Patrol. Jan. 25, 1943: Departed Pearl Harbor for overhaul at Mare Island.

Jan. 31, 1943: Arrived Mare Island and commenced overhaul.

May 1, 1943: Completed New York overhaul and Post overhaul trials and tests. Most important overhaul and modernization items were as follows: installation of new stores battery, removal of #1 aux. engine and installation of second Kleinschmidt Still, wet type main engine mufflers, 20 KM guns installed, 3" gun moved forward, lignum-vitae stern tube bearings, skewed slot main motor armatures, St. Rader, various shock mounting and machinery overhaul. Ship was capersed at San Francisco.

May 3, 1943: (000(T)): Departed San Francisco for Pearl. Spent one day enroute in fruitless search for crashed Army planes. Training dives and exercises.

May 10, 1943, 1200(V): Arrived Pearl Harbor and commenced repairs to gens on #4 main engine, Submarine Base handling the job.

May 21-24, 1943: Conducted Post overhaul training at sea with DD targets. Fired six exercise torpedoes on last two days - with CSD-21 on board.

1. NARRATIVE

May 27, 1943
Engine Repairs and minor post overhaul items completed - Departed Pearl Harbor for assigned Area Vr. Midway (12 torpedoes and 3 TNT heads). Torpedoes (12 torpedoes and 3 TNT heads). Fired 3" Gun (8 rounds) and miscellaneous training enroute.

May 31, 1943
Arrived Midway under air and surface escort. Toped off fuel to capacity. Repaired C&R H.P. Air compressor lub. pump with abl. and rapid assistances from Midway S/M. Base Machine Shop.

1600(Y)
Departed Midway without escort for Area Ten-Able via W.K.B. Is. Running on surface with 15 knot advance. Conducted various surface and submerged training enroute.

June 1, 1943
Crossed the 180th Meridian and changed date to June 2nd. Made four quick dives for training and Battle S. r.f. pass. ing up ammunition to fill topside magazines, etc.

-1-

— page 222 —
1. NARRATIVE (Cont'd.)

1. 1650(M) Sighted Midway Patrol plane, twin engine Ventura Bomber on S.W. course, distance 7 miles, radar making contact simultaneously.
1425(M) Radar picked up some plane returning at 7½ miles. Exchanged recognition and fired red flare. Held call and exercised at Battle Surface.

June 3, 1943 Surface cruising as before - enroute WX at 2 engine speed. Sky overcast - occasional heavy rain squalls.
0501(M) Made up and exercised at miscalaneous casualties.
0944(M) Discharged upon sighting what appeared to be MISTRESS type 97, twin engine, bomber crossing ahead at about 5 miles (No radar contact).
LONG 174-355 1057(M) Surface on course 240°T. and continued at two engine speed.
1944(M) Made training dive and exercised at Battle Problem and Battle Surface.
2020(.) Proceeded as before.

June 5, 1943 Cruising on surface, on two engines approaching WX.
0500(M) Sighted two searchlights on WX sweeping sea in our direction. Dove and commenced patrol north of WX and FALIS. Approaching to within 1 1/4 miles of ref. No ships other than half sunk vessel sighted. Signs of new buildings being constructed at several points.
0854(M) Sighted plane (4 engine patrol seaplane bomber) take off from Lagoon to fly to northward. Encounters to great a westerly set to circuit the entire WX group so at about commenced standing to westward for surfacing. Set clocks to -11 time.
1500(M) Surface an. continued to S.W. on two engines, cruising -changing.

June 6, 1943 Cruising on surface on two engines. Minor fire in maneuvering room damaged only the lead to the rest of field for 9/1 min generator. Continued on two engines. Loose lead causing trouble, readdressed.
0404(L)

— page 223 —
1. NARRATIVE (Cont.)

June 7, 1943
2028(L)
Adjusted speed to: submarine-batwheeler
TRUK-GUAI: and TRU-SALPAI: lanes, also, to keep
clear of another U. S. Submarine; reprapfied, ...
crossing ahead of us.

June 8, 1943
1519(L)
Dove for two radar plane contacts.
Patrolled submerged across various TRUK routes,
and keeping clear of other U.S. Submarine. Sur-
faced and continued to southwest at two engine
speed.

June 10, 1943
Remained on surface. Received messages of
importance: "regarding traffic lines-to be astrolled.

June 11, 1943
0530(L)
Sighted F.R.AULIP Is. bearing 251°T. distance
10 miles.
Dove and petrolled to S.W. Will pass WOLFAI Is.
after surface.
Set clocks back to (-10) time. Could see nothing
of interest on F.R.AULIP Is.
Surfaced and continued to S.W. Received ULTRA
regarding TONK NEU end made plans to intercept
her south of F.R.AULIP Is.

June 12, 1943
0535(K)
0620(K)
Sighted F.R.AULIP Is. bearing 145°T. distance
10 miles.
Submerged and patrolled to southward noting nothing
of interest on islands, very few habitations of
primitive sort seen. Encountering difficulty with
stern-planes contact maker.
Surfaced and proceeded to southward to intercept
tanker.
2110(K)
Sighted tanker in bright moonlight, bearing 122°T.
range 20,000 yds, commenced tracking end approach
Submerged and completed approach.
2250(K)
2345(K)
Fired four torpedoes from bow tubes. All missed,
heart-braking and not fully explained by analysis.
Target turned away sharply when torpedoes exploded
at end of run.

-3-

— page 224 —
1. NARRATIVE (Cont'd.)

June 13, 1943
0016(K)
0053(K)

1300(K)
1607(K)

2156(K)
2209(K)

June 14, 1943
0045(K)
0107(K)
0636 (K)

1011(K)
1214(K)

1216(K)
1258(K)
1309-10(K)
1450(K)
1515(K)
1930(K)

SC lost contact, so returned to periscope depth.

Surfaced and commenced chase of convoy.
Sighted smoke of convoy bearing 135°T, distance 11 miles, commenced tracking and drawing ahead.
Convoy was two Menus and SC (last nights target missing).
Submerged and completed approach.
Fired tubes 6,5 and 7 at larger of two Menus, observed one hit forward. Believe this one sank too.
SC took up search promptly and quickly located us with echo ranging.
Took refuge in a heavy layer, occasionally stopping but at
4 depth charges very close on starboard side - (Damage listed as eddenda to Part 10.)
SC finally withdrew.
Proceeded to southward at periscope depth, nothing in sight.
Surfaced and stood to southward while minor derangements were repaired. Received orders for patrol point on 19th and 20th.

— page 225 —
1. NARRATIVE (Cont'd.)

June 16, 1943
0105-0500(K)
0.005(K)
1907(K)
June 17, 1943
0100(K)
1015(K)
2123(K)
2305(K)
2324(K)
June 18, 1943
0001(K)
0407(K)
0500(K)
0520(K)
0628(K)
2141(K)

Surfaced and commenced taking position ahead of convoy for new approach at 4 engine speed.
Submerged and commenced approach.
Made bow tubes ready - but did not reach a firing position.
With slit targets headed directly away abandoned attack, having thoroughly botched this nights work.
Dawn was now beginning to break, and another and another and another of the convoy plus approach will take about 6-7 hours which will prevent us from reaching our point ordered for 19th and 20th.
Surfaced and proceeded to N.W. to point ordered, smoke of convoy still visible to east.
Sighted RAILKEPK IS. being 27°T. distance 8 miles and set course northward of it.

— page 226 —
1. NARRATIVE (Cont.)

June 19, 1943
200(K)
June 20, 1943
0701(K)
1805(K)
June 21, 1943
2136(K)
June 22, 1943
0200(K)
June 23, 1943
1655(K)
June 24-25
June 26, 1943
2200(K)

Submerged and began periscope patrol in vicinity of assigned point. With low visibility and heavy clouds, screened carrier planes, if present, made surface petrol unwise. Surfaced and stood to southward hewing sighted nothing. #2 main engine out of commission due to damage to crossheaded guide assembly /6 unit (no spares carried).

Proceeding southward at one and two engine speeds, returning to Area. Having made estimate of fuel consumption for coming week, sent message to ComSubPac advising necessity of deperting area about 27 June, due to fuel limitations.

Proceeding southward at one engine speed to Area. Entered Area (actually for first time, since previous operations had merely skirted Area). Submerged and patrolled to SW by rising plumed to spend remaining days petroling across the various traffic lines in our area if no message turns up, (using one engine speed). Surfaced proceeded westward.

Submerged petrol across PALAU-RABAUL line.

Submerged and surface petrol across PALAU-WEWAK and PALAU-HOLLANDIA lines.

Submerged petrol across PALAU-RABAUL line.

Departed Area TEN ALE at North East Corner and proceeded toward NOLAN.

— page 227 —
1. N.A.TIVE (Cont.)
June 28, 1943
001(K)
0500(K)
0519(K)
June 29, 1943
0235(K)
0638(K)
1647(K)
2203(K)
June 30, 1943
0355(K)
- Proceed to NS on prescribed route to MIDWAY at 2 engine speed.
- Sighted smoke bearing 08-T, and commenced trying to gain position ahead of what first appeared as 2 ship convoy and later as 3 ships. (Lat. 10-05N, Long. 147-15E). Tracked these ships throughout the day trying to gain position ahead but with no success. This due primarily to the fact that this convoy had no immediate destination, but made radioed base course changes between 550-T, and 230-T, every few hours. The second deterring factor was the treacherous visibility mostly against us which frequently either lost them for us or let us suddenly get too close. I am sure that we were seen at least once. By

— page 228 —
1. NRA REVIEW (Cont'd.)

June 30 (Cont'd.)

darkness, 'noditions were worse, and we had temporarily lost the convoy. I then decided to try a night surface attack hoping to get a break on visibility at last minute, and so took an aqueduct course (100°T,) based on their last known observations.

July 1, 1943

0020(K) Searchlight. On Tap convoy and ran sculls on course 052T.

Flares up after convoy ahead on easterly course. I tried to hear son 5200 years, Kede had clear sound and continued to swing left thru 600' back so first trip to the blacked out targets and range closed rapidly to 1100 yards, turned right and made stern tubes ready and at

0041(K) When triggers again in sight fired two stern tubes in low power at 4000 ton ship but all targets closely grouped. One pressure at 800 yards and the possible hit or pressure close to target. Largest target force fire with two (5-6") guns prior to our firing torpedoes. Swing to left and followed targets fired two torpedoes with 100 power at

0111(K) second largest ship (other ships merely overlaping, range 5200 yards). Both missed. Largest ship signalling with blinker tube.

0150(K) Maneuvered to draw ahead so as to reload forward and shock unfired torpedoes.

0300(K) Commenced reload - on course 074° target group sharp on start or cutter on easterly course. Slowed speed.

C332(K) Reload completed. Lost contact.

0600(K) Broadcast contact report on convoy.

3621(K) Submerged and commenced periscope patrol ahead of convoy if they are still going east. Visibility very poor and treacherous with heavy dark rain squalls. Brief increased visibility in some directions obtained by remaining on surface is cutweighted by chance of ships coming suddenly out of a squall.

1735(K) Surfaced. Nothing sighted. Continued toward WAK 18, at two engine speed.

— page 229 —
1. NARRATIVE(Cont.)

July 2, 1943
2000(K)
Continued toward WAKO at two engine speed
Set clocks ahead to (-11) time.

July 5, 1943
1259(L)
Surfaced and continued to northwest of WAKO thru
given point.

July 6, 1943
0559(L)
Dove on strong SD redder contact at about 5 miles.
Sky completely overcast, with low sound. Sea
has increased to force 3 from the east.
Went to deep submergence to test for leaks, and
final check on miscellaneous machinery prior to
r.fit period.

1748(L)
Surfaced and continued toward MIDWAY.

July 7, 1943
0000(L)
Set clocks ahead to (-12) time.

0535(L)
Sent message requesting rendezvous on MIDWAY
30 mile circle for dawn July 9.

July 8, 1943
0523(L)
Continued on surface toward Midway.
Trim dive.
Surfaced and continued on 2 engine combination.
Set clocks back 24 hours to allow for crossing
180th meridian.

July 8, 1943
0735(Y)
Continued on surface toward Midway.
Sighted own Patrol plane. Exchanged recognition
signals.
Sighted own patrol plane but were not sighted.

1530(Y)
Continued on surface toward Midway.
Met air escort at rendezvous on 30 mile circle
from Midway and proceeded to Midway.

July 9, 1943
0501(Y)
Continued on surface toward Midway.
Met air escort at rendezvous on 30 mile circle
from Midway and proceeded to Midway.

— page 233 —
7. SUMMARY OF SUNDAYS ATTACKS

| Attack | (1) | (2) | (3) |
|-------|-----|-----|-----|
| Time  | 2345(K) | 2309(K) | 1214(K) |
| Date  | June 12 | June 13 | June 14 |
| Location | 06-21N | 06-05N | 06-04N |
|       | 142-54E | 135-25E | 136-59E |
|       | 1 TNT | 1 TNT | 1 TNT |
|       | 3 TX | 1 TNT | 1 TNT |
|       | 2 | 1 TNT | 1 TNT |

Hits
| Number | Sunk (Tonnage) | None | 6581 Tons | 8252 Tons |
|-------||------|||
|       | Damage or Prob | No | Sunk | Sunk |
|       | Prob | Tonan Karr | :Like TAIBUN | :Like TAHOK |
|       |       | 19400 Tons | A0:MAR116581 | Tns AK:8252 Tns AK |

Range
| Type of Attack | (P): | (N)(P) | (N)(P) | (P): | (P): |
||------|||------|------|
| Surface(S)    | 16 ft. | 15 ft. | 10 ft. | 10 ft. | 10 ft. |
| Torpedo Depth | 11 ft. | 10 ft. | 10 ft. | 10 ft. | 10 ft. |
| Bow or Stern Shot | 1,2,3,4 | 5,7 | 6,5,7 | 6,5,7 | 6,5,7 |
| Track Angle | 79-83 S. | 100°F. | 85°S. | 85°S. | 85°S. |
| Gyro Angle | 251-359° | 153° | 165-169° | 165-169° | 165-169° |
| Estimated Target Speed | 12 kts. | 8 kts. | 8 kts. | 8 kts. | 8 kts. |
| Firing Interval | 15 sec. | 10 sec. | 15,11 sec. | 15,11 sec. | 15,11 sec. |
| Spread - Amount and Kind | 40 yd. div. | 80 yd. div. | 70 yd. div. | 70 yd. div. | 70 yd. div. |
| Was Torpedo Performance Satisfactory? | Yes | Yes | Yes | Yes | Yes |
| Remarks | -13- | -13- | -13- | -13- | -13- |

— page 234 —
7. SUM ARY OF SUBMARINE ATTACKS (Cont'd.)

Attack: (4) (5)
Time - Use G.C.T. : 0041 (K) : 0111 (K)
Date : July 1 : July 1
Location - (Lat.) : 10-36N : 10-36N
No. end Type Torpedoes : 146-03,5* : 146-03E
Fired on Each Attack : 1 TPX (Zrema- : 1 TPX
: 1 TNT (ture) *: 1 TNT *
: 1 TNT
Hits : (possible) : 0
Number Sunk (Tonnage) : None : None
Number Damaged or : Possible : Damage
Probably Sunk (Tonnage) : Damage : None
Type of Target : 3500 Tns. (?)

Range : 3400 yds : 5200 yds.
Type of Attack: Periscope (P) : Bridge TBT : Bridge TBT
Surface(S) Nl:ht (N) Rdl:r(R) : (N)(S) : (N)(S)
Estimated Draft of Torpedo : 15 ft. : 18 ft.
Torpedo Depth Setting : 10 ft. : 10 ft.
Bow or Stern Shot : Stern : Bow
7, 5 : 2, 4
Track Angle : 180° # : 140-150° S. #
Gyro Angle : 180° : 0°
Estimated Target Speed : 8,5 kts. : 8,5 kts.
Piring Interval : 35 sec. : 10 sec.
Spread - Amount and Kind : None : 2° div.
Was Torpedo Performance : No : Yes
Satisfactory?
Remarks:
* Torpedoes set at low power.
# 3 targets were favorably grouped
or overlapped during these attacks.

— page 236 —
10. U.S.S. SARGON
- SSIS-18-
Subject: Wer Patrol - Report of.

10. U.S.S. SARGON
- SSIS-18-
Subject: Wer Patrol - Report of.

a. The T.D.C. was out of commission on June 12, during first attack, was restored to use for the 2nd and 3rd attacks and then subsequently out of commission for rest of patrol, except for the angle solver. The torpedo officer, Lieut. Reguet with a F.C.5/6 and a striker (both brand new men) worked tirelessly with this equipment. This was a long story of grief that accounted our need of an experienced firecontrolmen. Various faults were determined and repaired, but other deficiencies, some as yet undetermined, kept this equipment out of commission. (A full account of the difficulties as discovered has been prepared to submit separately to the tender).

b. No. 1 torpedo tube was put out of commission by the depth charge attack of June 14. Rupturing of the forward roller drain flooded the tube. Since this smell drain line runs from the roller casting to the main drain pipe, plugging the roller and (thick) we could never have done on surface) would not prevent flooding through the min pipe. With separate drain lines, temporary repairs could have been made.

c. #2 Main Engine went out of commission for balance of patrol on June 20, due to broken connecting rod on #6 unit and damage to the crosshead guide assembly. The crosshead guide gib R.H. and L.H. were O.1200 out of line, thus preventing repairs, since no spares of these parts are carried.

d. #1 Low Pressure Blower was put out of commission by the depth charge attack of June 14. The reduction gear crank case was cracked between the drain plug and the foot or securing flange, causing a continuous loss of oil. This blower can still be used in emergencies.

e. #4 main engine outboard exhaust valve (not close properly by power. It has been necessary frequently to open and close this valve by hand. To date the cause is undetermined, but when proper inspection of the exterior linkage can be made, there should be no great difficulty.

f. Eower was lost on the stern planes during the latter part of a submerged approach on June 17, and on two other less embarrassing occasions. In the first instance the open-circuiting contacts on the series relay welded themselves together from continual arcing. With no current limiting factor in the accelerating contact the motor was allowed to pull a high current before the speed, and finally one lead of the

— page 237 —
10. MAJOR DEFECTS EXPERIENCED (Cont'd.)

overload relay burned off. This casualty may have been due to faulty original adjustment by personnel. However, the frequency of contact casualties on the planes in submarines, suggests looking further into design improvement.

e.  QC training was very stiff and noisy throughout the patrol making operation impractical particularly when deep. The fault lies in the training gears which appear to be misaligned although the difficulty has yet to be solved.

Although not properly belonging under deficiencies the damage and derangements sustained in Depth Charge attack of June 14, 1943, are here summarized as follows:

1. No, 1 torpedo tube out of commission for rest of patrol, due to rupture of forward roller drain.

2. #1 low pressure blower reduction gear crankshaft cracked. Blower out of commission but can be used in emergency.

3. Impulse tank for #3 torpedo tube leaking badly. Other impulse tanks leaking slightly. Kept tanks bled down when submerged in smooth seas thereafter.

4. Nos. 2, 3, and 5 air tanks leaking.

5. Distant heat exchangers of #1 and 2 main engines broken.

6. Nipple for gauge line on #2 main engine cracked at pump elbow.

7. Gasket knocked out of #1 MBT vent. This gasket was replaced during night following attack. We had been running with #1 end #4 vents closed.

8. Two depth gauge needles knocked off and one control room depth gauge damaged internally.

9. All fuel valves at manifold backed off about 1/4 turn.

10. High pressure air relief valve adjusting nut backed off rendering it temporarily inoperative.

11. Forward engine room air salvage valve opened.

— page 238 —
10. MAJOR OFFICERS EXPERIENCED (Cont'd.)

12. Key knocked out of bow plane operating linkage in forward torpedo room, [immediately replaced] and miscellaneous minor items, snipped rivets, etc.

— page 239 —
11. Was radio reception complete and what were last consecutive serial sent and received?

Radio reception of NMF Fox was excellent and complete.

Watch was maintained on 450 Kcs while in Are and vicinity, but no transmissions were heard.

In transmitting, once contact was made, it was easy to get a message off, but the difficulty lay in getting an opening in that crowded frequency band, and then NMF's go ahead was hard to hear, although Dutch Herbor and Australian Stations were clearly heard. On two occasions it took two hours to get off a message. It is believed that another circuit should be open to submerges only. The alternative of broadcasting important messages is not satisfactory.

Last Serial received was #22.

Last message sent was 061741 of July, 1943.

12. Sound Conditions and Density Layers

Sound conditions in Area Ten Able and to the northeastward of it averaged good. Rein squalls and schools of fish were the only disturbing factors.

The temperture were normal. Density layers at about 200 feet were twice encountered. On June 14, the layer was a Sodsend. While within this layer we could not hear our screws at one-third speed, but could plainly hear the Sub chaser.

— page 240 —
13. HEALTH AND HABITABILITY
Excellent. The high percentage of days spent surface running kept the ship unusually comfortable. There were no man-days lost due to illness or injury.

: 14. MILOS STEAMED PERIL TO AND FROM STATION
a. Miles steamed Pearl to Midway 1250
b. Midway to Station 2636
c. On Station 3513
d. Station to Midway 2873
TOTAL 10272

: 15. FUSIL EXPENDED
85,335 gallons (from Midway).

: 16. FACTORS OF ENDURANCE TRAINING
TORPEDOES 7 7000 GALS 20
FUEL PROVISIONS (Days) 20
FRESH WATER PERSONNEL (Days) 25
UNLIMITED 25

: 17. FACTOR OF ENDURANCE CAUSING END OF PATROL
The patrol was terminated erly because limit of fuel endurance was reached.
At midnight, 27 June, 37,645 gallons of fuel remained of which 9,300 was the estimated 10% reserve. This left 28,345 gallons for the return to Midway, whereas about 29,000 gallons had been used in reaching station.

— page 241 —
18. R.T.M.KS
Particulers of Attacks

Attack No. 1
After meeting the TONAN NARU at 21:10(K) she was tracked and position was obtained. The torpedoes were fired at 23:45 and the torpedo was launched at 23:45. The torpedo was launched at 23:45 and the torpedo was launched at 23:45. The torpedo was

— page 243 —
18. REN RKS (Cont'd.)

Attack No. 4

After having cracked the three ship convoy most of June 30, in rain scuttles and poor visibility contact was lost at about 2015. It was then decided that a night surface attack would have to be made, and an approach course was taken for the last enemy's course. This was continued until 2245 when a new estimate of enemy's possible movements resulted in changing course to 350°T. At 0020 when the convoy was picked up coming out of a squall ahead, the range to the nearest ship was 2000 yards. It is not clear, but we were probably seen then, but put rudder full left to make complete circles while bow tubes were being made ready. Almost at once a heavy scuttle was upon us, the enemy's ship, which was now in the midst of a heavy gale, was seen to be in the middle of a heavy gale, and the enemy was seen to be

— page 244 —
13. REMARKS (Cont'd.)

Attack No. 5

This attack was made at 0111(K), 1 July, 1943, within thirty minutes of the fourth attack. Visibility had cleared and we had followed the target group round closing the range to 520 yards before firing tubes 2 and 4 using a two degree spread (leading target 6 and 10) on the second largest target, whose angle on bow was about 150° sterrord, while other two targets were over 20° wide. Little to the right. We were unfortunately seen again as largest ship began signaling rapidly with a blue light, and following this, all ships put their stern to us. Both torpedoes (in low power) missed and were herrd to explode at end of their runs eleven minutes later.

Radar

3rd radar operation in general was satisfactory, armed, in one particular instance, by the failure to detect the presence of a 2-ship enemy convoy until the range had closed to less than 3500 yards. The cause of this failure is not definite, but the fact that the targets remained visible on the screen beyond 10,000 yards indicates that the set was operating properly and that the ship was not conducting (heavy clouds and rainfall) or leak of concentration on the port of the operator was to blame.

Maximum ranges obtained with other contacts averaged above 15,000 yards.

Interference, suspect, as being introduced by enemy rad, was noticed on two occasions during the patrol, but further investigation proved conclusively that the causes were intern 1.

M: Intenance of the S.D. set included the normal replacement of tubes, res.stores, etc., and also the building of a new blower fan for which there was no available spare part. Building this new fan from a tin can required a great deal of ingenuity and skill on the part of SUT.ON, James Elvis, R.T.Lo, and HAARTG, John Dee, Mo.N., etc.

Able assistance was also given on several occasions by PLOTD, William Orville, E.M., 30.

It was observed during the patrol that the voltage rectifier on the 3D motor-generator does not function properly at the high voltages of the finishing rate of a battery charge, thereby resulting in voltage variations and a distorted

— page 245 —
13. REMARKS (Cont'd.)

Attack No. 5

This attack was made at 0111(X), 1 July, 1943, within thirty minutes of the fourth attack. Visibility had cleared and we had followed the target group around closing the range to 520 yards before firing tubes 2 and 4 using a two degree spread (leading targets 8 and 10) on the second largest target, whose angle on bow was about 150° sternboard, while other two targets were overleaped. Little to the right. We were unfortunately seen again as largest ship began zigzagging rapidly with 4m blue light, and following this, all ships put their stern to us. Both torpedoes (in low power) missed and were her'd to explode at end of their runs eleven minutes later.

Radar

3rd radar operation in general was satisfactory, marked, in one particular instance, by the failure to detect the presence of a 3-ship enemy convoy until the range had closed to less than 2500 yards. The cause of this failure is not definite, but the fact that the targets remained visible on the screen beyond 10,000 yards indicate that the set was operating properly and that either it was not the conditions (heavy clouds and rain) or the lack of concentration on the port of the operator was to blame.

Maximum ranges obtained with other contacts averaged above 15,000 yards.

Interference, suspect, as being introduced by enemy rad, was noticed on two occasions during the patrol, but further investigation proved conclusively that the causes were intern 1.

M: intenance of the S.J. set included the normal replacement of tubes, res.stores, etc., and also the building of a new blower fan for which there was no available spare part. Building this new fan from 1m tin can required a great deal of ingenuity and skill on the part of SUTTON, Janes Elvis, R.T.lc, and HAARTES, John Dee, Ko.M.M. 50.

Able assistance was also given on several occasions by FLYDT, William Orville, E.M. 50.

It was observed during the patrol that the voltage rectifier on the 3M motor-generator does not function properly at the high voltages of the finishing rate of a battery charge, thereby resulting in voltage veristions and a distorted

— page 246 —
18, REMARKS (Cont't.)

trace on the screen. This trouble was overcome by shifting to I.C. power during the finishing rate. Only a very small amount of interference is introduced by this shift.

The performance of the SD Radar cannot be read by evaluate because of the very few contacts made and because of the fact that the boat is submerged too soon after a contact is noticed for it to be verified.

One fact, particularly, becomes evident in connection with the operation of either set - that is, the necessity for practical operating instruction of the personnel concerned. Every radar operator should be able to distinguish between actual targets and apparent targets caused by clouds, waves, etc., and to distinguish readily between the various forms of interference caused by auxiliary machinery on the ship and in the set and by other radars. Although knowledge of this sort can best be acquired by operating the radar, instruction by one already skilled will obviously be helpful.

The SARGO has an excellent radar technician in JUTTON, James Silvis, R.T.I., who technical knowledge and ability to "shoot" trouble have been almost totally responsible for keeping the radar sets in operating condition throughout the patrol.

Radio

Several unsuccessful attempts were made to listen to HF Fox on the submerged loop antennae ranging from 4000 miles down to 1600 miles from Pearl Harbor. The last attempt on July 3th was made at periscope depth and two signals were barely distinguishable. On surfacing at 45 feet and up the signal strength was 82.

Comments on Area Ten Able

Area Ten Able after the week 12-17 June, was disappointing in that the last week was spent without a contact, but this was a period of little or no traffic between FALAU and the South Eastward. I

No snap air patrol were