Patrol 1 - Atlantic

19 Oct 1942 - 27 Nov 1942

No sinkings

Patrol 2 - Atlantic

20 Dec 1942 - 18 Jan 1943

Patrol 3 - Atlantic

1 Feb 1943 - 22 Feb 1943

V408 (German) - Atlantic Theater, not credited to Blackfish in JANAC

Patrol 4 - Atlantic

5 Apr 1943 - 14 May 1943

Patrol 5 - Atlantic

8 Jun 1943 - 26 Jul 1943

Patrol 6

19 Oct 1943 - 4 Dec 1943

Patrol 7

25 Dec 1943 - 13 Feb 1944

Patrol 8

1 Mar 1944 - 19 May 1944

Patrol 9

4 Oct 1944 - 17 Nov 1944

Patrol 10

1 Jan 1945 - 21 Feb 1945

Patrol 11

21 Mar 1945 - 10 May 1945

Patrol 12

14 Jun 1945 - 14 Aug 1945

Current research credits Blackfish with sinking 2 ships totalling 2,532 tons, plus two small unidentified vessels of unknown tonnage. These figures are the same for Alden-McDonald.

JANAC credits Blackfish with sinking one ship of 2,087 tons.

SORG credits Blackfish with 6 ships and 10,800 tons sunk.

Japanese Naval and Merchant Ship Losses - JANAC on the NHHC website

JANAC on the Hyperwar website - https://www.ibiblio.org/hyperwar/Japan/IJN/JANAC-Losses/JANAC-Losses-6.html

SORG- http://archive.hnsa.org/doc/subreports-sorg.htm (Excel spreadsheet download)

Archives of the Pacific Fleet Submarine Museum (PFSM)

War Patrol Reports - USS Blackfish

Monthly Losses of Combatant and Non-Combatant Vessels

太平洋戦争時の喪失船舶明細表（汽船主体）- Lost Vessel table during the Pacific War (merchant vessels)

Alden, John D., and McDonald, Craig R. - U.S. & Allied Sub Successes in the Pacific & Far East during WWII - Fourth Edition, 2009

Cressman, Robert - The Official Chronology of the U.S. Navy in World War II, Naval Institute Press, 2000.

Wrecksite - https://www.wrecksite.eu/wrecksite.aspx

Miramar Ship Index - https://www.miramarshipindex.nz/

Imperial Japanese Navy Page - http://www.combinedfleet.com/

Wikipedia Japan - https://ja.wikipedia.org/wiki/

Japan Center for Asian Historical Records - National Archives of Japan - https://www.jacar.go.jp/index.html

Official U.S. Navy Photos - Naval History & Heritage Command

Archives of the Pacific Fleet Submarine Museum (PFSM)

Imperial Japanese Navy Page - http://www.combinedfleet.com/

Japanese Merchant Ship photos - Wrecksite - copyright owners retain all rights. Photos used on this site will be taken down should the owner request their removal.