13 Sep, 1944
USS Trepang (Cdr. R.M. Davenport) departs Pearl Harbour for her 1st war patrol. She is ordered to patrol south of Honshu, Japan.

1 Oct, 1944
USS Trepang (Cdr. R.M. Davenport) torpedoes and sinks the Japanese supply ship Takunan Maru (752 GRT) north of Ogasawara-Gunto in position 25º30'N, 142º30'E. (see map)

11 Oct, 1944
USS Trepang (Cdr. R.M. Davenport) torpedoes and sinks the Japanese landing ship T 105 (870 tons) off Honshu, Japan in position 33º18'N, 137º42'E. (see map)

12 Oct, 1944
USS Trepang (Cdr. R.M. Davenport) torpedoes and damages the Japanese destroyer Fuyuzuki (2701 tons, offsite link) off Omaesuki, Japan in position 33º56'N, 138º09'E. (see map)

23 Oct, 1944
USS Trepang (Cdr. R.M. Davenport) ends her 1st war patrol at Majuro.

16 Nov, 1944
USS Trepang (Cdr. R.M. Davenport) departs Majuro for her 2nd war patrol. She is ordered to patrol in Luzon Strait.

6 Dec, 1944
USS Trepang (Cdr. R.M. Davenport) torpedoes and sinks the Japanese army cargo ship Fukuyo Maru (5463 GRT) and the Japanese merchant cargo ship Jinyo Maru (6862 GRT) and torpedoes and damages the Japanese merchant cargo ship Yamakuni Maru (500 GRT) north of Luzon, Philippines in position 18º59'N, 121º05'E. (see map)

7 Dec, 1944
USS Trepang (Cdr. R.M. Davenport) torpedoes and sinks the Japanese troop transport Banshu Maru No.31 (748 GRT) north of Luzon, Philippines in position 18º54'N, 120º49'E. (see map)

20 Dec, 1944
USS Trepang (Cdr. R.M. Davenport) ends her 2nd war patrol at Pearl Harbour.

25 Jan, 1945
USS Trepang (Cdr. A.R. Faust) departs Pearl Harbour for her 3rd war patrol. She is ordered to patrol of Honshu, Japan.

24 Feb, 1945
USS Trepang (Cdr. A.R. Faust) torpedoes and sinks the Japanese merchant cargo ship Uzuki Maru (875 GRT) north-north-east of Mikizaki, Japan in position 32º40'N, 132º33'E. (see map)

3 Mar, 1945
USS Trepang (Cdr. A.R. Faust) torpedoes and sinks the Japanese auxiliary gunboat Nissho Maru No.2 (1386 GRT) off Mijake Jima, Japan in position 34º05'N, 139º54'E. Trepang ends her 3rd war patrol at Guam. (see map)

28 Apr, 1945
While on her 4th war patrol USS Trepang (Cdr. A.R. Faust) torpedoes and sinks the Japanese landing ship T 146 (870 tons) off Osezaki, Japan in position 32º24'N, 128º40'E. (see map)

30 Apr, 1945
While on her 4th war patrol USS Trepang (Cdr. A.R. Faust) torpedoes and sinks the Japanese troop transport Miho Maru (4667 GRT) in the Yellow Sea in position 34º27'N, 123º48'E. (see map)

4 May, 1945
While on her 4th war patrol USS Trepang (Cdr. A.R. Faust) torpedoes and sinks the Japanese minesweeper W 20 (648 tons, offite link) in the Yellow Sea about 140 nautical miles south-east of Mokpo, Korea in position 34º16'N, 123º37'E. Trepang ends her 4th war patrol at Guam. (see map)

7 Jul, 1945
While on her 5th war patrol USS Trepang (Cdr. A.R. Faust) torpedoes and sinks the Japanese merchant cargo ship Koun Maru No.2 (606 GRT) east of Japan in position 42º21'N, 141º28'E. (see map)

14 Jul, 1945
While on her 5th war patrol USS Trepang (Cdr. A.R. Faust) sinks a small Japanese vessel with gunfire east of Honshu, Japan in position 38º43'N, 141º53'E. Trepang ends her 5th war patrol at Pearl Harbour. (see map)