Patrol 1

19 Nov 1944 - 15 Jan 1945

第76号駆潜特務艇 Cha-76

Patrol 2

11 Feb 1945 - 21 Apr 1945

No sinkings

Sea Owl is credited in JANAC with the sinking of the Japanese submarine Ro-56 at Wake Island. However, Ro-56 was not at Wake Island, and most likely sunk by American destroyers east of Okinawa on 8-9 April 1945. Japanese sources state that I-372 was attacked on the date and at the location of the Sea Owl attack, but was not damaged.

Patrol 3

20 May 1945 - 29 Jul 1945

第41号海防艦 CD-41

Unidentified Schooner sunk by gunfire, estimated at 300 tons, 4 POWs taken

Current research credits Sea Owl with 3 ships sunk, totalling 1,245 tons, including the unidentified schooner estimated at 300 tons. These figures are the same for Alden-McDonald.

JANAC credits Sea Owl with 2 ships and 1,689 tons sunk.

SORG credits Sea Owl with 5 ships and 7,000 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 Sea Owl

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.