Patrol 1

3 Nov 1943 - 18 Dec 1943

大同丸 Daido Maru

Patrol 2

15 Jan 1944 - 9 Mar 1944

No sinkings

Patrol 3

2 Apr 1944 - 22 May 1944

No attacks

Patrol 4

19 Jun 1944 - 26 Jul 1944

No sinkings

Patrol 5

12 Sep 1944 - 28 Oct 1944

第六朝洋丸 Choyo Maru No. 6

八郎潟丸 Hachirogata Maru

Patrol 6

20 Nov 1944 - 5 Jan 1945

Patrol 7

28 May 1945 - 14 Jul 1945

博愛丸 Hakuai Mari

第二橘丸 Tachibana Maru No. 2

Patrol 8

7 Aug 1945 - 2 Sep 1945

5 ships, 7,816 tons, including the small patrol boat Choyo Maru No 6 and the small motor-sail vessel Tachibana Maru No. 2, neither of which were credited to Apogon in JANAC.

JANAC - 3 ships, 7,575 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 Apogon with 5 ships and 7,816 tons sunk, including the small patrol boat Choyo Maru No 6 and the small motor-sail vessel Tachibana Maru No. 2.

SORG credits Apogon with 10 ships and 46,000 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 Apogon

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.