1 Jul, 1943
With her trials and initial training completed USS Bowfin (Cdr. J.H. Willingham) departs New London bound for Brisbane, Australia.

10 Aug, 1943
USS Bowfin (Cdr. J.H. Willingham) arrives at Brisbane.

16 Aug, 1943
USS Bowfin (Cdr. J.H. Willingham) departs Brisbane for her 1st war patrol. She is ordered to patrol in the South China Sea.

2 Sep, 1943
USS Bowfin (Cdr. J.H. Willingham) delivers supplies and evacuates some people from Binuni Point, Mindanao, Philippines.

25 Sep, 1943
USS Bowfin (Cdr. J.H. Willingham) torpedoes and sinks the Japanese tanker Kirishima Maru (5959 GRT) in the South China Sea in position 09º50'N, 112º03'E. (see map)

30 Sep, 1943
USS Bowfin (Cdr. J.H. Willingham) delivers supplies and evacuates people from Siquijor Island, Philippines.

Bowfin also sinks the small Japanese cargo ship Mitake Maru with gunfire in the Sulu Sea in position 05º17'N, 121º57'E. (see map)

2 Oct, 1943
USS Bowfin (Cdr. J.H. Willingham) sinks a Japanese sampam with gunfire in Makassar Strait in position 00º55'S, 118º13'E. (see map)

10 Oct, 1943
USS Bowfin (Cdr. J.H. Willingham) ends her 1st war patrol at Fremantle, Australia.

26 Oct, 1943
Lt.Cdr. W.T. Griffith takes over the command of USS Bowfin from Cdr. J.H. Willingham.

1 Nov, 1943
USS Bowfin (Lt.Cdr. W.T. Griffith) departs Fremantle for her 2nd war patrol. She is ordered to patrol in the South China Sea.

9 Nov, 1943
USS Bowfin (Lt.Cdr. W.T. Griffith) sinks four Japanese sailing vessels with gunfire in Makassar Strait. One was sunk in position 02º22'S, 118º16'E and three more were sunk in position 03º37'S, 118º20'E. (see map)

26 Nov, 1943
USS Bowfin (Lt.Cdr. W.T. Griffith) torpedoes and sinks the Japanese army tanker Ogurasan Maru (5069 GRT) and merchant cargo ship Tainan Maru (5407 GRT) off Cape Varella, French Indo-China in position 13º00'N, 109º30'E. (see map)

27 Nov, 1943
USS Bowfin (Lt.Cdr. W.T. Griffith) torpedoes and sinks the Vichy French cargo ship Van Vollenhoven (691 GRT) off coast of French Indochina in position 13º13'N, 109º27'E. (see map)

28 Nov, 1943
USS Bowfin (Lt.Cdr. W.T. Griffith) torpedoes and sinks the army cargo ship Sydney Maru (5425 GRT) and merchant tanker Tonan Maru (9839 GRT) off the French Indo-China coast in position 12º45'N, 109º41'E.

Bowfin in return is damaged by Japanese gunfire and is forced to terminate her patrol. (see map)

2 Dec, 1943
USS Bowfin (Lt.Cdr. W.T. Griffith) sinks a Japanese sailing vessel with gunfire in Makassar Strait in position 03º25'S, 118º20'E. (see map)

9 Dec, 1943
USS Bowfin (Lt.Cdr. W.T. Griffith) ends her 2nd war patrol at Fremantle.

8 Jan, 1944
USS Bowfin (Lt.Cdr. W.T. Griffith) departs Fremantle for her 3rd war patrol. She is ordered to patrol in Makassar Strait.

18 Jan, 1944
USS Bowfin (Lt.Cdr. W.T. Griffith) torpedoes and sinks the Japanese merchant tanker Shoyu Maru (4408 GRT) off the west coast of Palawan in position 00º18'N, 118º37'E. (see map)

28 Jan, 1944
USS Bowfin (Lt.Cdr. W.T. Griffith) torpedoes and damages the Japanese seaplane tender / oiler Kamoi (17000 GRT, offsite link) off Makassar, Netherlands East Indies in position 03º25'S, 118º15'E. (see map)

29 Jan, 1944
USS Bowfin (Lt.Cdr. W.T. Griffith) lays mines off southeastern coast of Borneo near Balikpapan.

30 Jan, 1944
USS Bowfin (Lt.Cdr. W.T. Griffith) sinks two Japanese sailing vessels with gunfire in the Java Sea in position 05º50'S, 116º52'E. (see map)

5 Feb, 1944
USS Bowfin (Lt.Cdr. W.T. Griffith) ends her 3rd war patrol at Fremantle.

28 Feb, 1944
USS Bowfin (Cdr. W.T. Griffith) departs Fremantle on her 4th war patrol. She is ordered to patrol in the Celebes Sea area.

11 Mar, 1944
USS Bowfin (Cdr. W.T. Griffith) torpedoes and sinks the Japanese army cargo ship Tsukikawa Maru (4673 GRT) west of Halmahera in position 01º25'S, 128º14'E. (see map)

14 Mar, 1944
USS Bowfin (Cdr. W.T. Griffith) calles at Darwin to take on board addition torpedoes. She heads back to her patrol area the next day.

24 Mar, 1944
During an attack on a Japanese convoy about 95 nautical miles south of Davao, Mindanao, Philippines, USS Bowfin (Cdr. W.T. Griffith) torpedoes sinks the Japanese troop transport Shinkyo Maru (2672 GRT) in position 05º38'N, 125º50'E and the Japanese army cargo ship Bengal Maru (5399 GRT) in position 05º37'N, 125º58'E. (see map)

1 Apr, 1944
USS Bowfin (Cdr. W.T. Griffith) ends her 4th war patrol at Fremantle.

15 Apr, 1944
Cdr. J. Corbus takes over the command of USS Bowfin from Cdr. W.T. Griffith.

25 Apr, 1944
USS Bowfin (Cdr. J. Corbus) departs Fremantle for her 5th war patrol. She is ordered to patrol off the Palau's.

14 May, 1944
USS Bowfin (Cdr. J. Corbus) and USS Aspro (Cdr. Stevenson) torpedo and sink the Japanese army cargo ship Bisan Maru (4667 GRT) about 90 nautical miles northwest of Palau in position 08º55'N, 133º42'E. (see map)

21 Jun, 1944
USS Bowfin (Cdr. J. Corbus) ends her 5th war patrol at Pearl Harbour.

16 Jul, 1944
USS Bowfin (Cdr. J. Corbus) departs Pearl Harbour for her 6th war patrol. She is ordered to patrol off the Ryukyu Islands.

10 Aug, 1944
USS Bowfin (Cdr. J. Corbus) torpedoes and sinks the small Japanese merchant cargo ship Seiyo Maru (197 GRT) off Minami Daito Shima in position 25º50'N, 131º12'E. (see map)

22 Aug, 1944
USS Bowfin (Cdr. J. Corbus) torpedoes and sinks the Japanese army cargo ship Tsushima Maru (6754 GRT) some 10 kilometers north-west of Akuseki in position 29º32'N, 129º33'E. (see map)

28 Aug, 1944
USS Bowfin (Cdr. J. Corbus) sinks a Japanese trawler with gunfire south-east off Okinawa in position 25º56'N, 128º54'E. (see map)

4 Sep, 1944
USS Bowfin (Cdr. J. Corbus) sinks the Japanese guardboat Hinode Maru No.6 (245 GRT) with gunfire east of the Bonin Islands in position 31º54'N, 152º05'E. (see map)

13 Sep, 1944
USS Bowfin (Cdr. J. Corbus) ends her 6th war patrol at Pearl Harbour. She is now sent to the Mare Island Navy Yard for a major overhaul.

21 Sep, 1944
USS Bowfin (Cdr. J. Corbus) arrives at the Mare Island Navy Yard.

23 Sep, 1944
The Japanese gunboat Nankai (2400 tons, offsite link) and the Japanese troop transport Hokkai Maru (8416 GRT) are damaged by mines (laid by USS Bowfin on 29 January) off Balikpapan, Borneo in position 03º37'S, 116º25'E. (see map)

23 Sep, 1944
Cdr. A.K. Tyree takes over the command of USS Bowfin from Cdr. J. Corbus.

25 Jan, 1945
With her overhaul completed USS Bowfin (Cdr. A.K. Tyree) departs Pearl Harbour for her 7th war patrol. She is ordered to patrol south of Honshu, Japan.

17 Feb, 1945
USS Bowfin (Cdr. A.K. Tyree) torpedoes and sinks the Japanese corvette Kaibokan No.56 (740 tons) five miles east of Mikura Jima, central Honshu, Japan in position 33º53'N, 139º43'E.

Bowfin (assisted by aircraft) also sinks the guardboat Nanshin Maru No.26 (81 GRT) south-west of Mikimoto light in position 30.05N, 135.15E.

2 Mar, 1945
USS Bowfin (Cdr. A.K. Tyree) torpedoes and sinks the Japanese guardboat Chokai Maru (135 GRT) north-east of Miyake Jima in position 33º50'N, 139º22'E. (see map)

25 Mar, 1945
USS Bowfin (Cdr. A.K. Tyree) ends her 7th war patrol at Guam.

23 Apr, 1945
USS Bowfin (Cdr. A.K. Tyree) departs Guam for her 8th war patrol. She is ordered to patrol in Japanese home waters off Honshu and Hokkaido.

1 May, 1945
USS Bowfin (Cdr. A.K. Tyree) torpedoes and sinks the Japanese auxiliary gunboat Chowa Maru (2719 GRT) south-east of Erimosaki, Hokkaido, Japan in position 41º02'N, 144º36'E. (see map)

8 May, 1945
USS Bowfin (Cdr. A.K. Tyree) torpedoes and sinks the Japanese fishing vessel Daito Maru No.3 (880 GRT) east-south- east of Todogasaki, Honshu, Japan in position 39º38'N, 142º08'E. (see map)

15 May, 1945
USS Bowfin (Cdr. A.K. Tyree) ends her 8th war patrol at Guam.

29 May, 1945
USS Bowfin (Cdr. A.K. Tyree) departs Guam for her 9th war patrol. She is ordered to patrol in the Sea of Japan.

11 Jun, 1945
USS Bowfin (Cdr. A.K. Tyree) torpedoes and sinks the Japanese merchant cargo ship Shinyo Maru No.3 (1898 GRT) off Genzan, Korea in position 39º24'N, 128º59'E. (see map)

13 Jun, 1945
USS Bowfin (Cdr. A.K. Tyree) torpedoes and sinks the Japanese merchant cargo ship Akiura Maru (887 GRT) off the east coast of Korea in position 39º00'N, 128º05'E. (see map)

4 Jul, 1945
USS Bowfin (Cdr. A.K. Tyree) ends her 9th war patrol at Pearl Harbour.