13 Dec, 1941
USS Pollack (Lt.Cdr. S.P. Moseley) leaves Pearl Harbour for her frist war patrol. She was ordered to patrol in Japanese home waters.

5 Jan, 1942
USS Pollack (Lt.Cdr. S.P. Moseley) torpedoes and damages the Japanese merchant Heijo Maru (2700 GRT) about 80 nautical miles east-south-east of Tokyo Bay, Honshu, Japan in position 34º15'N, 140º08'E. (see map)

7 Jan, 1942
USS Pollack (Lt.Cdr. S.P. Moseley) torpedoes and sinks the Japanese collier Unkai Maru No.1 (2250 GRT) south of Honshu, Japan in position 34º27'N, 139º59'E. (see map)

9 Jan, 1942
USS Pollack (Lt.Cdr. S.P. Moseley) torpedoes and sinks the Japanese transport ship Teian Maru (5387 GRT) about 40 nautical miles south-south-west of Inubozaki, Japan in position 35º00'N, 140º36'E. (see map)

21 Jan, 1942
USS Pollack (Lt.Cdr. S.P. Moseley) ends her first war patrol when she returns to Pearl Harbour.

18 Feb, 1942
USS Pollack (Lt.Cdr. S.P. Moseley) leaves Pearl Harbour for her second war patrol. She was ordered to patrol in the East China Sea.

11 Mar, 1942
While operating in the East China Sea about 270 nautical miles east of Shanghai, USS Pollack (Lt.Cdr. S.P. Moseley) torpedoes and sinks the Japanese transport ship Fukushu Maru (1454 GRT) in position 30º53'N, 126º20'E and the Japanese passenger-cargo ship Baikal Maru (5266 GRT) in position 31º00'N, 126º32'E. (see map)

8 Apr, 1942
USS Pollack (Lt.Cdr. S.P. Moseley) ends her Second war patrol when she returned to Pearl Harbour.

2 May, 1942
USS Pollack (Lt.Cdr. S.P. Moseley) left Pearl Harbour for her third war patrol. Once agian she was ordered to patrol in Japanese home waters.

16 Jun, 1942
USS Pollack (Lt.Cdr. S.P. Moseley) ended her third war patrol at Pearl Harbour. She went into overhaul at the Pearl Harbour Navy Yard.

10 Oct, 1942
USS Pollack (Lt.Cdr. R.E. Palmer) left Pearl Harbour for her 4th war patrol but before she reached her assigned area she was ordered back to Midway where she arrived on 23 October to top off with fuel. She was now ordered to patrol of Truk.

29 Nov, 1942
USS Pollack (Lt.Cdr. R.E. Palmer) ended her 4th war patrol at Pearl Harbour.

31 Dec, 1942
USS Pollack (Lt.Cdr. R.E. Palmer) left Pearl Harbour for her 5th war patrol. She was ordered to patrol in Japanese home waters.

21 Jan, 1943
USS Pollack (Lt.Cdr. R.E. Palmer) torpedoes and sinks the Japanese merchant Asama Maru (4892 GRT) off Kushiro, Japan in position 42º41'N, 145º37'E. (see map)

10 Feb, 1943
USS Pollack (Lt.Cdr. R.E. Palmer) ends her 5th war patrol at Pearl Harbour.

6 Mar, 1943
USS Pollack (Lt.Cdr. R.E. Palmer) left Pearl Harbour for her 6th war patrol. She was ordered to patrol in the Marshall / Gilbert Islands area.

18 Apr, 1943
USS Pollack (Lt.Cdr. R.E. Palmer) ends her 6th war patrol at Midway.

10 May, 1943
USS Pollack (Lt.Cdr. B.E. Lewellen) left Pearl Harbour for her 7th war patrol. She was ordered to patrol in the Marshall Islands area.

18 May, 1943
USS Pollack (Lt.Cdr. B.E. Lewellen) torpedoes and sinks the Japanese auxiliary gunboat Terushima Maru (3110 GRT) south-west of Maleolap Atoll, Marshall Islands in position 08º00'N, 171º00'E. (see map)

20 May, 1943
USS Pollack (Lt.Cdr. B.E. Lewellen) torpedoes and sinks the Japanese armed merchant cruiser Bangkok Maru (8461 GRT) south-east of Jaluit, Marshall Islands in position 06º47'N, 169º42'E. (see map)

25 Jun, 1943
USS Pollack (Lt.Cdr. B.E. Lewellen) ends her 7th war patrol at Pearl Harbour.

20 Jul, 1943
USS Pollack (Lt.Cdr. B.E. Lewellen) leaves Pearl Harbour for her 8th war patrol. She is ordered to patrol in Japanese home waters off the east coast of Kyushu.

27 Aug, 1943
USS Pollack (Lt.Cdr. B.E. Lewellen) torpedoes and sinks the Japanese transport ship Taifuku Maru (3520 GRT) east of Kyushu in position 32º28'N, 132º23'E. (see map)

3 Sep, 1943
USS Pollack (Lt.Cdr. B.E. Lewellen) torpedoes and sinks the Japanese transport ship Tagonoura Maru (3521 GRT) off Mikura Jima, Japan in position 33º38'N, 140º07'E. (see map)

16 Sep, 1943
USS Pollack (Lt.Cdr. B.E. Lewellen) ends her 8th war patrol at Pearl Harbour.

28 Feb, 1944
After an overhaul USS Pollack (Lt.Cdr. B.E. Lewellen) leaves Pearl Harbour for her 9th war patrol. She is ordered to patrol in the Bonin Islands area.

21 Mar, 1944
USS Pollack (Lt.Cdr. B.E. Lewellen) torpedoes and sinks the Japanese auxiliary netlayer Hakuyo Maru (1327 GRT) about 30 nautical miles north-east of Torishima in position 30º53'N, 140º42'E. (see map)

25 Mar, 1944
USS Pollack (Lt.Cdr. B.E. Lewellen) torpedoes and sinks the Japanese submarine chaser Ch-54 (442 tons) about 50 nautical miles north of Muko Jima, Bonin Islands in position 28º44'N, 141º45'E. (see map)

3 Apr, 1944
USS Pollack (Lt.Cdr. B.E. Lewellen) torpedoes and sinks the Japanese transport ship Tosei Maru (2814 GRT) about 325 miles south of Yokohama, Japan in position 30º14'N, 139º44'E. (see map)

11 Apr, 1944
USS Pollack (Lt.Cdr. B.E. Lewellen) ends her 9th war patrol at Midway.

6 May, 1944
USS Pollack (Lt.Cdr. B.E. Lewellen) leaves midweay for her 10th war patrol. Once again she is ordered to patrol of the Bonin Islands.

22 May, 1944
USS Pollack (Lt.Cdr. B.E. Lewellen) torpedoes and sinks the Japanese destroyer Asanagi (offsite link) about 200 nautical miles west-north-west of Chichi Jima, Bonin Islands in position 28º19'N, 138º54'E. (see map)

7 Jun, 1944
USS Pollack (Lt.Cdr. B.E. Lewellen) ended her 10th war patrol at Pearl Harbour.

15 Jul, 1944
USS Pollack (Lt.Cdr. E.H. Steinmetz) left Pearl Harbour for her 11th and final war patrol. She was ordered to patrol in the Palau area.

12 Sep, 1944
USS Pollack (Lt.Cdr. E.H. Steinmetz) ended her 11th and final war patrol at Brisbane, Australia. Pollack refitted at Brisbane before leaving Australia for Pearl Harbour on 10 October 1944.

18 Nov, 1944
USS Pollack (Lt.Cdr. E.H. Steinmetz) arrived back at Pearl Harbour. She was now assigned to training duties.