Patrol 1

18 Dec 1941- 31 Jan 1942

No sinkings

Patrol 2

20 Apr 1942 - 18 Jun 1942

Kotoku Maru - small fishing vessel sunk by gunfire; not credited to Pompano in JANAC

東京丸 Tokyo Maru

熱田丸 Atsuta Maru

Ito Maru No. 3 - small fishing vessel sunk by gunfire; not credited to Pompano in JANAC

Patrol 3

19 Jul 1942 - 12 Sep 1942

JANAC credits Pampano with sinking an "Unknown Maru" - most likely 帝楓丸 Teifu Maru, which was not sunk in this attack. Teifu Maru was sunk by aircraft on 21 Jan 1945.

第二十七南進丸 Nanshin Maru No. 27 - Patrol Boat sunk by gunfire; not credited to Pompano in JANAC

Patrol 4

16 Jan 1943 - 28 Feb 1943

Patrol 5

19 Mar 1943 - 10 May 1943

Patrol 6

6 Jun 1943 - 28 Jul 1943

相良丸 Sagara Maru - attacked and badly damaged by USS Harder, run aground, and two weeks later hit again by Pompano. JANAC credits Harder only.

Unidentified Sampan sunk by gunfire, not credited to Pompano in JANAC

Patrol 7

2o Aug 1943 - 17 Sep 1943 (lost)

あかま丸 Akama Maru

JANAC credits Pampano with sinking 太湖丸 Taiko Maru, but the sinking occured in the sea of Japan, out of her patrol area. Probably sunk by USS Wahoo (SS-238) on September 25, 1943.

USS Pompano was lost on this patrol.

Current research credits Pompano with sinking 4 ships, totalling 22,049 tons, including shared credit with Harder for sinking Sagara Maru, plus four small vessels sunk by gunfire and not credited to Pompano in JANAC, including the Patrol Boat Nanshin Maru No. 27. These figures are the same for Alden-McDonald.

JANAC - 5 ships, 21,443 tons, including an "Unknown Maru" of 4,000 tons and Taiko Maru, 2,958 tons, neither of which were sunk by Pompano, but not including shared credit for sinking Sagara Maru. 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.

SORG credits Pompano with 10 ships and 42,,000 tons sunk, including a sampan of unknown tonnage.

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 Pompano

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.

Enright, Joseph F. - Shinano! The Sinking of Japan's Secret Supership, St. Martin's Press, 1987.

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.