Patrol 1

9 Dec 1941-11 Jan 1942

No sinkings

Patrol 2

25 Jan 1942- 5 Mar 1942

No sinkings

Patrol 3

28 Mar 1942-17 May 1942

Patrol 4

30 May 1942-9 Jun 1942

Patrol 5

22 Oct 1942-10 Dec 1942

Patrol 6

10 Jan 1943-25 Feb 1943

伏見丸 Fushimi Maru

龍田丸 Tatsuta Maru

Patrol 7

29 Mar 1943- 15 May 1943

Patrol 8

30 Jul 1943-8 Sep 1943

Shinsei Maru (damaged)

楡林丸 Yurin (Yulin) Maru - not credited to Tarpon in JANAC

Patrol 9

1 Oct 1943-3 Nov 1943

Michel (Greman) - Not included in JANAC

Patrol 10

4 Dec 1943-12 Jan 1944

No sinkings

Patrol 11

19 Jun 1944-8 Aug 1944

Patrol 12

31 Aug 1944-14 Oct 1944

4 ships, 32,747 tons, including the small Naval vessel Yurin Maru and the German commerce raider Michel, neither of which are credited to Tarpon in JANAC.

JANAC - 2 ships, 27,910 tons. Note that the criteria JANAC used included all Japanese Naval vessels (although JANAC did not usually count warships less than 500 tons that were converted from merchant ships) and all Japanese merchant vessels of 500 or more gross tons known or believed to have been lost during the war. Differences between JANAC figures and current research are noted above.

Alden-McDonald credit Tarpon with 4 ships and 32,747 tons sunk.

SORG credits Tarpon with 5 ships and 32,100 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 Tarpon

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)

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.

NavSource Online: Submarine Photo Archive