Patrol 1

21 Dec 1943- 29 Feb 1944

No sinkings

Patrol 2

17 Mar 1944- 23 May 1944

藤川丸 Fujikawa Maru

Patrol 3

21 Jun 1944-8 Aug 1944

津軽 Tsugaru

Patrol 4

1 Sepl 1944-24 Oct 1944 ran aground, lost

愛宕 Atago

高雄 Takao - Total loss; not credited to Darter in JANAC

4 ships, 33,389 tons, including Takao, heavily damaged by Darter; never repaired. Later damaged by limpet mine placed by British mini-sub XE-3; finally sunk as a target after the war.

JANAC - 3 ships, 19,429 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 Darter with 4 ships and 33,389 tons sunk or rendered as total loss.

SORG credits Darter with 3 ships and 23,700 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 Darter

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