U.S.S. FINBACK (SS-230) — war patrol report SS-230_FINBACK_Part2.pdf

— page 3 —
1943
The common whale of the Atlantic coast of the United States.
(SS-230: d.p. 1,521; 1,311/2"; b. 274"; dr. 153"; s. 20-230)
Fisback (SS-230) was launched 25 August 1941 by Portsmouth Naval Shipyard, Portsmouth, N. H., by the Portsmouth Naval Shipyard, Portsmouth, N. H

— page 4 —
1963

American Naval Fighting Ships

VOLUME II • 1963

NAVY DEPARTMENT
OFFICE OF THE CHIEF OF NAVAL OPERATIONS
NAVAL HISTORY DIVISION • WASHINGTON

— page 5 —
5 July 1942
FROM CO USS FINBACK (SS-230)
SERIAL
SUBJECT ACTION BY U.S. SUBMARINE
DATE
1 Form Report of action in Lat. 51.44 N, Long. 177.27 E, during 1st War Patrol (25 Jun - 12 Aug 42). Claims 1 destroyer damaged.
(NORPAC: U.S. Submarine Actions)
FILED: War Diary
Separately as ORIGINAL

MICROSERIAL NO. | ACTION REPORT | DATE | TIME
--- | --- | --- | ---
DATE 9-11 August 1942 | NAME | FINBACK | 1
FROM commanding officer | USS FINBACK (SS-230) | SERIAL | 1
DATE | NAME | TIME
--- | --- | ---
SUBJECT SPECIAL MISSION
CRYOLOGICAL coverage of support of surveying party for Tanaga Bay, Tanaga Island, Aleutian Island.
(NORPAC: SUB)
FILED: War Diary
Separately as PROCESSED COPY

MICROSERIAL NO. | ACTION REPORT | DATE | TIME
--- | --- | --- | ---
DATE 1 Oct - 3 Nov 42 | NAME | FINBACK | 1
FROM CO USS FINBACK (SS-230) | SERIAL | 1
DATE | NAME | TIME
--- | --- | --- | ---
SUBJECT Action by U.S. Submarine - Forwarding of. Forwards 6 Form Reports of torpedo and gunfire attacks by FINBACK on Jap ships in Lat. 25.22 N, Long. 121.12 E, during 2nd War Patrol (23 Sep - 20 Nov 42).
(CENPAC: U.S. Submarine Actions)
FILED: War Diary
Separately as ORIGINAL; as PHOTOSTAT(O);

MICROSERIAL NO. | ACTION REPORT | DATE | TIME
--- | --- | --- | ---
--- | --- | --- | ---

— page 7 —
115
Original by
3/2/58
U.S. SUBMARINE ACTION REPORT
Date: July 5, 1942
Location: Latitude 51°-44'(N)
Longitude 177°-27'(E)

INSTRUCTIONS:
(a) ATTACK FIRST - THEN COLLECT DATA FOR THIS REPORT.
(b) DO NOT "GUN DECK" THIS REPORT - IF DATA CANNOT BE ESTIMATED WITH REASONABLE ACCURACY ENTER A DASH IN SPACE FOR WHICH NO DATA IS AVAILABLE.
(c) DRAW A CIRCLE AROUND THE APPROPRIATE ENTRY IN THIS REPORT WHEREVER SUITABLE.

WEATHER CONDITIONS: Visibility - 5 miles.
SEA CONDITIONS: Slightly choppy - Good periscope weather.
UND CONDITIONS (if applicable): Fair - First picked up pinging.
TYPE OF OPERATIONS: Patrolling south of Kiska Island.
SPECIFIC OBJECTIVE: Locate and destroy enemy forces.
FORCES ENGAGED: OWN FINBACK
(Name and Type) ENEMY Two Destroyers - One Amagiri Class and One Asashio Class.
PE OF ATTACK (Own XENON - scratch one) Torpedo
BRIEF DESCRIPTION: Fired six torpedoes at two patrolling Destroyers.
WEAPONS EMPLOYED: Own Six torpedoes.
ENEMY Eighteen depth charges.
AMMUNITION EXPENDED Six torpedoes.
EVASIVE TACTICS EMPLOYED: Own Deep submergence and varying courses and speeds.
ENEMY Maneuvered to avoid by turning along torpedo tracks.

ENCLOSURE D

CSFP-4-1-2-1000

— page 8 —
1200 yards
Firing range: 62 feet
Kee depth: 62 feet
Straight shot (s)
Type spread: Divergent
Attack: (unopposed)
(check) (opposed by air screen/close screen)
Detected: (prior to firing X)
(check) (after firing)
(undetected)
RESULTS: (Certain) Missed First Destroyer.

(Estimated) Hit on Second Destroyer (Aasahio Class).
Sound man followed torpedo into second ship, heard explosion and propeller noises stopped.
DAMAGE TO OWN SHIP None.

BRIEF REMARKS Leading Destroyer had three horizontal white stripes around forward stack and was flying a Baker Flag from Foretruck.
(Might have been Japanese S.O.P.A. Pennant).

Lieutenant Commander, U. S. Navy, Commanding.

— page 9 —
1. Narrative of Tannag Surveying Party.
Object: U.S.S. FINALCK - Report of First Far Patrol.

1. Narrative - Tannag Surveying Party.

6/9/42 Set course for Iazan Bay, Atka Island at best speed.
0100-Y

0530-Y
Dived on sighting plane coming out of fog on starboard quarter, distance about 1000 yards, headed directly for ship. Bomb exploded as ship reached 100 feet. Plane appeared to be very similar to our P/U Type, and Lookout identified it as type 97 Two cngined Patrol Plane. Scause of distance of ship north of Alcutian Chain, it is believed this ship's transmission acknowledged receipt of message ordering FILBANK to Iazan Bay was DF by the Enemy, and the plane located us accurately by Radar. The bomb was accurately placed. Point was taken from the overhead and a nipple on cage line to refrigerating plant carried away. The subsequent shot of water grounded out the trim Pump, Drain Pump, and Refrigerating Plant circulating Water Pump. Grounds cleared in about seven hours. Depth cage in Coming "Power deranged.

1052-Y
Dived on Radar contact of plane. Plane not sighted.

1340-Y
Dived on Radar contact of plane. Plane not sighted.

2219-Y
Anchorod in Iazan Bay.

3/10/42
Undercry with Surveying Party for Tannag Bay, Tannag Island, Alcutian Islands.

0539-Y
Dived on Radar contact of Plane. Plane not sighted.

1335-Y
Dived on Radar contact of plane. Plane not sighted.

2047-Y
Anchorod in Tannag Bay.

8/11/42
Disembarked Surveying Party, and got underway. Conducted submerged and surface patrol of Tannag Bay and approaches to same, taking soundings, with fathometer at the same time.

6/11/42
Completed taking Surveying Party aboard and got underway, proceeding to Dutch Harbor.

-12-

— page 10 —
16. Factor causing end of patrol:-
Orders from Com.Task Group Eight Point Five.

17. Remarks:-
(a) Twilight in this latitude lasts all night until July 24th. If it were not for the fog submarine operations in the area would become untenable.
(b) It is considered essential for morale that news be available. Provision of short wave radio sets that are not regenerative would help this situation.

- 11- ENCLOSURE (A)

— page 12 —
12 010:9
U. S. SUBMARINE ACTION REPORT
U. S. FINBACK (SS230)
Date: October 14, 1942
Time: 1507
Location: Latitude 25°22' N
Longitude 21°12' E

INSTRUCTIONS:
(a) ATTACK FIRST—THEN COLLECT DATA FOR THIS REPORT.
(b) DO NOT "GUN DECK" THIS REPORT—IF DATA CANNOT BE ESTIMATED WITH REASONABLE ACCURACY, ENTER A DASH IN SPACE FOR WHICH NO DATA IS AVAILABLE.
(c) DRAW A CIRCLE AROUND THE APPROPRIATE ENTRY IN THIS REPORT WHEREVER SUITABLE.

WEATHER CONDITIONS: Overcast
SEA CONDITIONS: Force three
SOUND CONDITIONS (if applicable): Poor
TYPE OF OPERATIONS: War Patrol

SPECIFIC OBJECTIVE: Destroy enemy Men-of-war and shipping.

FORCES ENGAGED: OWN

FINBACK
(Name and Type) ENEMY One Patrol Vessel - Two Torpedo Boats(Octari Class)-
Three Steamers 4500-5500 tons) - One Naval Auxiliary of about 8000 tons
(Similar to Kitten-Maru)

TYPE OF ATTACK (Own/Enemy—scratch one) Submerged Torpedo

BRIEF DESCRIPTION: Fired two torpedoes at each of last two ships in column.

WEAPONS EMPLOYED: Four torpedoes.
Own Enemy Twelve depth charges.

AMMUNITION EXPENDED None

EVASIVE TACTICS EMPLOYED: Submergence under density layer.
Own Enemy None.

ENCLOSURE (A)

— page 13 —
2000 - 2200 yards
Firing range: 60 feet
Kee depth: 60 feet
Straight/angled shot(s)
Type spread: 20 Divergent
Attack: (unopposed)
(checked) (unopposed)
Detected: (prior to firing)
(checked) (after firing)
(undetected)
RESULTS: (Certain)
Sunk Following:
1 - Freighter - About 5300 tons
1 - Passenger Freighter - About 7900 tons.
(Estimated)
DAMAGE TO OWN SHIP: None.
BRIEF REMARKS:

— page 14 —
12 01029
U. S. SUBMARINE ACTION REPORT
U. S. S. FINBACK (SS230) Date: October 18, 1942
Time 1110 Location: Latitude 250-17' N
Longitude 122-01' E
INSTRUCTIONS:
(a) ATTACK FIRST—THEN COLLECT DATA FOR THIS REPORT.
(b) DO NOT "GUN DECK" THIS REPORT—IF DATA CANNOT BE ESTIMATED WITH REASONABLE ACCURACY, ENTER A DASH IN SPACE FOR WHICH NO DATA IS AVAILABLE.
(c) DRAW A CIRCLE AROUND THE APPROPRIATE ENTRY IN THIS REPORT WHEREVER SUITABLE.

WEATHER CONDITIONS: Clear.
SEA CONDITIONS: Force three - Good Periscope Weather.
SOUND CONDITIONS (if applicable): Poor - Picked up target at 3000 yards.
TYPE OF OPERATIONS: War Patrol.
SPECIFIC OBJECTIVE: Destroy enemy Men-of-war and shipping.
FORCES ENGAGED: OWN
    FINBACK
(Name and Type) ENEMY: Passenger-Freighter (Similar to Seattle Maru)
TYPE OF ATTACK (Own/Breaking—scratch one): Submerged torpedo
BRIEF DESCRIPTION: Missed with two torpedoes astern. Hit with two torpedoes. Apparently contact hits.
WEAPONS EMPLOYED: Four torpedoes.
    Own
    Enemy
AMMUNITION EXPENDED: None.
EVASIVE TACTICS EMPLOYED:
    Own: None.
    Enemy: Zig-zagging.

ENLISTED (B)

— page 15 —
2000 - 2400 yards
Firing range: 60
Kee depth: 60
Straight (marked by dots): 5
Type spread: 20 Divergent
Attack: (unopposed x (checked by instructor))
Detected: (checked)
Two Hits on Freighter.
(Estimated) Damaged 5800 ton Freighter.
None.
DAMAGE TO OWN SHIP
BRIEF REMARKS
Freighter down in water and having trouble with rudder control but she apparently made port.

[Signature]
Lieut.-Comm., U.S. Navy, Commanding.

AS12-71-42-M.

— page 16 —
12 010:9
U. S. SUBMARINE ACTION REPORT
S. FINBACK (SS230)
Date: October 20
Time: 2340
Location: Latitude 24°-26'N
Longitude 120°-25'E

INSTRUCTIONS:
(a) ATTACK FIRST—THEN COLLECT DATA FOR THIS REPORT.
(b) DO NOT "GUN DECK" THIS REPORT—IF DATA CANNOT BE ESTIMATED WITH REASONABLE ACCURACY, ENTER A DASH IN SPACE FOR WHICH NO DATA IS AVAILABLE.
(c) DRAW A CIRCLE AROUND THE APPROPRIATE ENTRY IN THIS REPORT WHEREVER SUITABLE.

WEATHER CONDITIONS
Bright Moonlight - Partially cloudy.

SEA CONDITIONS
Force Three.

SOUND CONDITIONS (if applicable)
Poor.

TYPE OF OPERATIONS
War Patrol.

SPECIFIC OBJECTIVE
Destroy enemy men-of-war and shipping.

FORCES ENGAGED: OWN

FINBACK
(Name and Type) ENEMY
THREE FRIGHTENERS. (SHILLAR TO LYONS MARY)

TYPE OF ATTACK (Own/Submerged to: Pedro)

BRIEF DESCRIPTION
Chased enemy convoy of three ships on surface at night. Dived ahead of convoy. Sunk two enemy fighters.

WEAPONS EMPLOYED:
Own: Six torpedoes.
Enemy: None.

AMMUNITION EXPENDED: None.

EVASIVE TACTICS EMPLOYED:
Own: None.
Enemy: Third Freighter ran away.

ENCLOSURE (C)

— page 17 —
500 and 2500
Firing range: 500 and 2500
TYPE ATTACK (check)
Keele depth: 60
Periscope
Straight/angle shot(s) Except for one torpedo periscope and TDC
Type spread: Divergent
Sound
Attack: (unopposed) (check) (after firing)
Sound and TDC
Detected: (check) (after firing)
Sank two freighters of 7000 tons.
RESULTS: (Certain)
(Estimated)
DAMAGE TO OWN SHIP
None.
BRIEF REMARKS
[Signature]
LIEUT.-CONR., U.S. NAVY, COMMANDING.

— page 18 —
12 01029
U. S. SUBMARINE ACTION REPORT
U. S. S. PTBACK(S3230)
Date: October 24, 1942
Time: 1446
Location: Latitude 24-50° N
Longitude 119°-40° E

INSTRUCTIONS:
(a) ATTACK FIRST—THEN COLLECT DATA FOR THIS REPORT.
(b) DO NOT "GUN DECK" THIS REPORT—IF DATA CANNOT BE ESTIMATED WITH REASONABLE ACCURACY, ENTER A DASH IN SPACE FOR WHICH NO DATA IS AVAILABLE.
(c) DRAW A CIRCLE AROUND THE APPROPRIATE ENTRY IN THIS REPORT WHEREVER SUITABLE.

WEATHER CONDITIONS: Clear.
SEA CONDITIONS: Force Three.
SOUND CONDITIONS (if applicable): Poor - Range of 4000 yards.
TYPE OF OPERATIONS: War Patrol.

SPECIFIC OBJECTIVE: Destroy enemy Men-of-war and Shipping.

FORCES ENGAGED: OWN

FINBACK
(Name and Type) ENEMY: FRIGHTENER-PASSENGER. (SIDDLER TO HONOROKU MARU)

TYPE OF ATTACK (Own: Destroy-scratch one): Submerged Torpedo

BRIEF DESCRIPTION: Sighted target, dive, and made submerged approach.
Missed astern with three torpedoes.

WEAPONS EMPLOYED:
Own: Three torpedoes.
Enemy: None.

AMMUNITION EXPENDED: None.

EVASIVE TACTICS EMPLOYED:
Own: None.
Enemy: Zig-zagging.

ENCLOSURE (D)

— page 19 —
2500
Firing range: 2500
Kiel depth: 60
Straight/angle shot(s)
Type spread: DIVERGENT
Attack: (unopposed) (opposed) (after firing) (unopposed)
Detected: (after firing) (unopposed)
RESULTS: (Certain) Missed ship, with three torpedoes.

(Estimated)
DAMAGE TO OWN SHIP: None.

BRIEF REMARKS

[Signature]
Lieut-Cdr., U.S. Navy, Commanding.

— page 20 —
12 0105
U. S. SUBMARINE ACTION REPORT
Date: October 25
Time: 0715
Location: Latitude 22°21'-00 N
Longitude 120°08'-00 E

INSTRUCTIONS:
(a) ATTACK FIRST—THEN COLLECT DATA FOR THIS REPORT.
(b) DO NOT "GUN DECK" THIS REPORT—IF DATA CANNOT BE ESTIMATED WITH REASONABLE ACCURACY, ENTER A DASH IN SPACE FOR WHICH NO DATA IS AVAILABLE.
(c) DRAW A CIRCLE AROUND THE APPROPRIATE ENTRY IN THIS REPORT WHEREVER SUITABLE.

WEATHER CONDITIONS: Clear.
SEA CONDITIONS: Smooth - Long swells - No white caps.
SOUND CONDITIONS (if applicable): Excellent.
TYPE OF OPERATIONS: War Patrol.
SPECIFIC OBJECTIVE: Destroy enemy Men-of-War and Snipping.
FORCES ENGAGED: OWN
    FINBACK.
(Name and Type) ENEMY: Passenger-Freighter of about 8400 tons.
TYPE OF ATTACK (Own/Enemy-scratch one): Submerged torpedo.
BRIEF DESCRIPTION: Slighted target - Made approach - Missed with three torpedoes.
WEAPONS EMPLOYED:
    Own: Three torpedoes.
    Enemy: Patrol boats depth charged at great distance.
AMMUNITION EXPENDED: None.
EVASIVE TACTICS EMPLOYED:
    Own: Ran silent at periscope depth.
    Enemy Turned away - Increased speed.

ENCLOSURE (E)

— page 21 —
1500
Firing range: 1500
Kee depth: 64
Straight/curved shot(s)
Type spread: 10 Divergent
Attack: (unmarked)
(check)
Detected: (check)
(underlined)
RESULTS: (Certain)
Missed.
(Estimated)
DAMAGE TO OWN SHIP: None.
BRIEF REMARKS: Two of these torpedoes should have hit. The data was good and checked consistently. It is believed the depth setting was too deep.

[Signature]
Lieut-Cdr., U.S. Navy, Commanding.

— page 22 —
12 01029
U. S. SUBMARINE ACTION REPORT
U. S. FINBACK (SS230)
Date: November 3
Time: 14:53
Location: Latitude 25°25'N
Longitude 126°31'E

INSTRUCTIONS:
(a) ATTACK FIRST—THEN COLLECT DATA FOR THIS REPORT.
(b) DO NOT "GUN DECK" THIS REPORT—IF DATA CANNOT BE ESTIMATED WITH REASONABLE ACCURACY, ENTER A DASH IN SPACE FOR WHICH NO DATA IS AVAILABLE.
(c) DRAW A CIRCLE AROUND THE APPROPRIATE ENTRY IN THIS REPORT WHEREVER SUITABLE.

WEATHER CONDITIONS: Clear.
SEA CONDITIONS: Force - Two.
SOUND CONDITIONS (if applicable): -
TYPE OF OPERATIONS: War Patrol.

SPECIFIC OBJECTIVE: Destroy Enemy Men-of-war and shipping.

FORCES ENGAGED: OWN

FINBACK
(Name and Type) ENEMY: Ocean-going. Sampan - About 100 tons.

TYPE OF ATTACK (Own: Enemy - scratch one) Gunfire.

BRIEF DESCRIPTION: Closed sampan to point blank range, attacked with all available gunfire, killed crew and left sampan wrecked.

WEAPONS EMPLOYED: 3"-50 cal gun, 20MM gun, 50 Cal. MG, 2-30 cal 18", Browning Auto. Rifle and Four Tommy Guns.
Own: None (Had two machine guns which were not fired.)

AMMUNITION EXPENDED: 3"-50 cal - 14 rounds; 20 MG - 30 rounds; 50 Cal. MG - 150 rounds; 30 Cal. MG, 180 rounds; BAR 10 rounds; 45 cal, 300 rounds.

EVASIVE TACTICS EMPLOYED:
Own: None.
Enemy: Ran away at best speed.

ENCLOSURE (F) 7

— page 23 —
FOR TORPEDO ATTACK (Own):
Firing range: ......
Kiel depth: ......
Straight/curved shot(s) ......
Type spread: ......
Attack:  (unopposed
(checked)  (opposed by air screen/close screen
Detected:  (prior to firing
(check)  (undetected
Killed all personnel.  Left samp burning
RESULTS: (Certain)  ......
and demolished.
(Estimated)  ......
DAMAGE TO OWN SHIP  ......
BRIEF REMARKS  ......

Jesse L. Toll,
Lieut.-Comdr., U.S. Navy,
Commanding.

AS12-7-42-1M.

— page 24 —
19
Card 18 SEP 1951
COMMANDER SUBMARINE FORCE
UNITED STATES PACIFIC FLEET
FF12-10/A16-3(8)
(05)
Serial 0242
Care of Fleet Post Office,
San Francisco, California,
Feb 2 1943

From: The Commander Submarine Force, Pacific Fleet.
To: The Commander in Chief, U.S. Pacific Fleet.

Subject: Action Report.

Reference: (a) Pacific Fleet Conf. Ltr. 36CL-42.
Enclosure: (a) 2 copies of action report submitted by P.Z
FINBACK, dated January 17, 1943.

1. Enclosure (a) is transmitted herewith in accordance
with reference (a).

2. FINBACK was credited by the Commander Submarine Force,
Pacific Fleet, as having destroyed by gunfire one patrol boat of
150-200 tons, as reported in enclosure (a).

Copy to:
Commich (less enc.)
FINBACK " "

— page 25 —
194 3.
Date: 17 January
Location: Latitude 30-33 N
Longitude 132-35E

U.S. SUBMARINE ACTION REPORT
U.S. FINBACK (SS230)
Date: 17 January
Time: 1143 (GMT)
Location: Latitude 30-33 N
Longitude 132-35E

INSTRUCTIONS:
(a) Attack First—Then collect data for this report.
(b) Do not "gun deck" this report—if data cannot be estimated with reasonable accuracy enter a dash in space for which no data is available.
(c) Draw a circle around the appropriate entry in this report wherever suitable.

Weather conditions: Clear.
Sea conditions: Slight chop.
Sound conditions (if applicable): Not applicable.
Type of operations: Patrolting assigned area.

Specific objective: Destroy enemy forces encountered.

Forces engaged: Own U.S.S. FINBACK

(Name and Type) Enemy Patrol Boat, 150 - 200 tons.

Type of attack (own/enemy—scratch one) Gun.

Brief description First: patrol of 20M riddled his box structure aft and cleared the decks of personnel. The 4"-50 cal. hits took out his masts and holed him from stem to stern. There were no survivors.

Weapons employed:
Own 4"-50 Cal. and 20 M machine gun.
Enemy
Ammunition expended: 15 4"-50 Cal.: 480 20M.

— page 26 —
1. Evasive tactics employed:
   - Own: None
   - Enemy: Tried to run away

For Torpedo Attack (Own):
   - Firing range: [Type Attack (check)]
   - Keel depth: [Periscope]
   - Straight/curved shot(s): [Periscope and TDC]
   - Type spread: [Sound]

Attack: (unopposed (check) (opposed by air screen/close screen)
   - Detected: (prior to firing (after firing (undetected)
   - Result: [Certain] Patrol boat broken up and left in a sinking condition; further expenditure of ammunition was not considered warranted.

(Estimated)

Damage to own ship: None.

Lookout (s) or special equipment: detector operator(s):

(Name) (Rate) (ServiceNo.)
made initial contact by [Sight (sound) (radar), (SMSD), (MAD), (Sight)]
Brief Remarks: Flicked up by the O.O.D. Submerged when radar gave range of 3400 yards and tracked target in to 1000 yards. Held battle surface.

— page 28 —
U.S. SUBMARINE ACTION REPORT
U.S. S.S. FINBACK (SS230)  Date:  March 21,  1943
Time:  1122 (I)  Location: Latitude 07.40 N
Longitude 139.48 E

INSTRUCTIONS:
(a) Attack First—Then collect data for this report.
(b) Do not "gun deck" this report—if data cannot be estimated with reasonable accuracy enter a dash in space for which no data is available.
(c) Draw a circle around the appropriate entry in this report wherever suitable.

Weather conditions  ______
Sea conditions  ______
Sound conditions (if applicable)  ______
Type of operations  ______
Specific objective  ______
Forces engaged:  Own  U.S.S. FINBACK (SS230)
(Name and Type)  Enemy  ______
Type of attack (own/foreign)  ______
Brief description  ______
Weapons employed:  _

— page 31 —
6,581 tons.

Damage to own ship: General loosening up or slight misalignment of auxiliary machinery - None serious.

Lookout(s) or special equipment detector operator(s):
   - R.D. ROSEND (Name)
   - [Signature]
   - [Name]
   - [Service No.]

made initial contact by: [Name] (radar), [Name] (SMSD), [Name] (MAD), [Name] (Sight)

Brief Remarks: Attack made after sabotage convoy for fifty-two hours.

Forced to dive by gunfire from Freighters.

Signed by:
- [Signature]
- [Name]
- [Title]

— page 32 —
U. S. SUBMARINE ACTION REPORT
U. S. S.  ...FINBACK (SS230)
Time ...1752
Location:  Latitude ...South shore of
Longitude ...Lake. Talland
INSTRUCTIONS:
(a) Attack First—Then collect data for this report.
(b) Do not "gun deck" this report—if data cannot be estimated with reasonable accuracy enter a dash in space for which no data is available.
(c) Draw a circle around the appropriate entry in this report wherever suitable.

Weather conditions  Clear
Sea conditions  Condition four
Sound conditions (if applicable)  Poor
Type of operations  (or Patrol)
Specific objective  Attack and destroy enemy men of war and shipping.

Forces engaged: Own  U.S.S. FINBACK (SS230)

(Name and Type) Enemy Frigate...similar to. RITZBANK. MARV...5,142 tons, page 100 of C.H.I. 205-7.

Type of attack (own, torpedoes, attack, torpedoes, torped

— page 33 —
1,700 yards
Type Attack (check)
Keen depth 62 feet
Periscope
Straight underwater
Periscope and TDC X
Type spread None
Sound
Attack: (compressed)
(checked) (opposed by air screen/close screen earlier Sound and TDC but not at actual time of attack.
Detected: (prior to firing)
(check) (attacking)
(undetected)
Results: (Certain) One hit near stern of beached freighter.

(Estimated) Steamer cannot be salvaged for further sea services.

Damage to own ship None

Lookout(s) or special equipment detector operator(s):
Commanding Officer
(Name) (Rate) (Service No.)
made initial contact by: Parascope
(sound) (radar), (SMSD), (MAD), (Sight)

Brief Remarks: The torpedo hitting the stern seemed to have considerable destructive effect as viewed through the periscope. Second torpedo set off of target by current seemed to explode on hitting reef with a low radar detonation.

Lieutenant Commander U.S. Navy, commanding.

— page 34 —

END OF REEL
JOB NO. E-108

THIS MICROFILM IS
THE PROPERTY OF
THE UNITED STATES
GOVERNMENT

MICROFILMED BY
NPPSO—NAVAL DISTRICT WASHINGTON
MICROFILM SECTION