Patrol 1

22 Oct 1943- 16 Dec 1943

No sinkings

Patrol 2

11 Jan 1944- 13 Mar 1944

第三小倉丸 Ogura Maru No. 3

大速丸 Taisoku Maru

Patrol 3

4 Apr 1944-1 Jun 1944

刈萱 Karukaya

昌平丸 Shohei Maru

Patrol 4

3 Jul 1944-25 Aug 1944

星光丸 Seiko Maru

東石丸 Toseki Maru (not credited to Cod in JANAC; small vessel often not included in sinkings)

第六新生丸 Shinsei Maru No. 6 (not credited to Cod in JANAC; small vessel often not included in sinkings)

第129号輸送艦 Transport No. 129 (T 129)

Patrol 5

18 Sep 1944-20 Nov 1944

辰城丸 Tatsushiro Maru

Also heavily damaged but did not sink the 14,050 ton collier/oiler Shiretoko (知床). This vessel was sunk while in drydock in Singapore four months later by USSAF bombers.

Patrol 6

24 Mar 1945-29 May 1945

Banshu Maru No. 2 (not credited to Cod in JANAC; identity of vessel uncertain)

Kari Maru or Choyo Maru (not credited to Cod in JANAC; identity of vessel uncertain)

第41号掃海艇 Minesweeper No. 41 (W 41)

Patrol 7

26 Jun 1945-13 Aug 1945

10 ships, 27,494 tons (two were small vessel often not included in sinkings). These figures do not include Banshu Maru No. 2 and Kari (or Choyo) Maru - further information is necessary to verify their identities.

JANAC - 8 ships, 26,985 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 Cod with 10 ships and 27,494 tons sunk, not including Banshu Maru No. 2 and Kari (or Choyo) Maru.

SORG credits Cod with 13 ships and 51,100 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 Cod

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.