Patrol 1

20 Oct 1942 - 25 Nov 1942

Patrol 2

16 Dec 1942 - 18 Jan 1943

No sinkings; patrol in the Bay of Biscay

An attack was conducted on the Spanish tanker Campomanes, believed by Barb's CO to be Axis controlled. The vessel was damaged, but not sunk. (Note: This appears as a as a sinking on Barb's battleflag as designated by the small Nazi flag.)

Patrol 3

1 Feb 1943 - 9 Mar 1943

Patrol 4

1 Apr 1943 - 14 May1943

No sinkings; patrol in the Bay of Biscay

Patrol 5

8 Jun 1943 - 24 Jul 1943

No sinkings; patrol in the Bay of Biscay

Patrol 6

30 Sep 1943 - 28 Nov 1943

No sinkings; patrol in the western Pacific

Patrol 7

2 Mar 1944 - 25 Apr 1944

福成丸 - Fukusei Maru

Patrol 8

21 May 1944 - 9 Jul 1944

興東丸 - Koto Maru

まどらす丸 - Madras Maru

東天丸 - Toten Maru

千早丸 - Chihaya Maru

高島丸 - Takashima Maru

Patrol 9

4 Aug 1944 - 3 Oct 1944

＃20日の出丸 - Hinode Maru No. 20 (Naval vessel not credited in JANAC, but is credited to Barb in Alden and Cressman)

大国丸 - Okuni Maru

あづさ丸 - Azusa Maru

雲鷹 - Unyo

Patrol 10

27 Oct 1944 - 25 Nov 1944

護國丸 - Gokoku Maru

鳴尾丸 - Naruo Maru

王洋丸 - Gyokuyo Maru - damaged by Barb, sunk two days later by USS Spadefish (SS-411). JANAC credits Spadefish (only) with this sinking; Alden gives partial credit to Barb and Spadefish.

Patrol 11

19 Dec 1944 - 15 Feb 1945

Unidentified vessel - Japanese Naval Weather Ship (not credited in JANAC)

辰洋丸 - Tatsuyo Maru (Shinyo Maru)

彦島丸 - Hikojima Maru- shared sinking credit with USS Queenfish (SS-393) and USS Picuda (SS-382) in JANAC

三洋丸 - Sanyo Maru

大恭丸 - Daikyo Maru (Taikyo Maru)

*****

Other Barb sinking claims on this patrol that are unconfirmed or disproven:

安洋丸 - Anyo Maru - Although Barb attacked the convoy that Anyo Maru was in, and is given credit for sinking this ship in JANAC and other sources, research shows that Anyo Maru was not damaged in Barb's attack, and was sunk later the same day by USS Picuda (SS-382).

Meiho Maru - damaged; sunk more than two months later by aircraft (not credited to Barb in JANAC)

Hisagawa Maru - sunk by aircraft on January 9, 1945 (not credited to Barb in JANAC)

3 cargo ships, names unknown (not credited to Barb in JANAC)

Katuura (Katsuura) Maru, lost by accidental grounding, February 2, 1945 (not credited to Barb in JANAC)

Patrol 12

8 Jun 1945 - 2 Aug 1945

Unidentified vessel sunk with Mark 27 "Cutie" torpedo (not credited to Barb in JANAC). The sinking was filmed; documents and small pieces of the wreckage were retrieved.

＃11 札幌丸 Sapporo Maru No. 11

第112号海防艦 - Coast Defense Vessel No. 112

＃15生保丸 - Seiho Maru No. 15 (Naval vessel not credited in JANAC, but is credited to Barb in Alden and Cressman)

ships, tons

The Joint Army-Navy Assessment Committee (JANAC) credited Barb with 17 ships and 96,628 tons sunk. 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 Barb with ships and tons sunk, plus ships damaged, tons. For the sinking of 王洋丸 - Gyokuyo Maru, Alden gives partial credit to Barb and Spadefish.

War Patrol Reports and Endorsements credit Barb with 25 ships and 179,700 tons sunk.

SORG credits Barb with 31 ships (over 500 tons), and 122,800 tons sunk.

RADM Fluckey in his book Thunder Below credits Barb (on Patrols 7 through 12) with 29 ships and 146,808 tons sunk.

An article on the website of the Naval History and Heritage Command credits Barb with "destroying 96,628 tons of enemy sinking."

Japanese Naval and Merchant Ship Losses - JANAC

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 Barb

Japanese Merchant Ship Losses

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.

Fluckey, Eugene B. Thunder Below!: The USS Barb revolutionizes submarine warfare in World War II. Urbana: University of Illinois Press, 1992.

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/バーブ_(潜水艦) - Note that articles on Wikipedia Japan are often more detailed than those written in English, especially in regards to the Japanese ships mentioned in them.

Japan Center for Asian Historical Records - National Archives of Japan -

https://www.jacar.go.jp/index.html

World War II Armed Forces website https://www.niehorster.org/014_japan/navy-commanders/amx.html (information on Hinode Maru #20)

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.