7 Dec, 1941
When the Japanese attacked Pearl Harbour, USS Trout (Lt.Cdr. F.W. Fenno) was already at sea on a simulated war patrol off Midway. During the night USS Trout spotted the Japanese destroyers Sazanami and Ushio (both offsite links) shelling Midway. Unfortunately she was unable to attack them.

20 Dec, 1941
USS Trout (Lt.Cdr. F.W. Fenno) ended her 1st war patrol at Pearl Harbour.

12 Jan, 1942
USS Trout (Lt.Cdr. F.W. Fenno) left Pearl Harbour for her 2nd war patrol. She was ordered to transport 3500 rounds of 3" AA ammunition to the besieged American forces on Corregidor in the Philippines.

3 Feb, 1942
USS Trout (Lt.Cdr. F.W. Fenno) delivers the ammunition to Corregidor and embarks gold, silver, securities, mail and one officer to be transported to Pearl Harbor.

9 Feb, 1942
USS Trout (Lt.Cdr. F.W. Fenno) torpedoes and sinks the Japanese auxiliary gunboat Chuwa Maru (2719 GRT) about 55 nautical miles from Keelung, Formosa in position 25º30'N, 122º38'E. (see map)

3 Mar, 1942
USS Trout (Lt.Cdr. F.W. Fenno) ended her 2nd war patrol at Pearl Harbour.

24 Mar, 1942
USS Trout (Lt.Cdr. F.W. Fenno) departs Pearl Harbour for her 3th war patrol. She is ordered to patrol in Japanese home waters.

11 Apr, 1942
USS Trout (Lt.Cdr. F.W. Fenno) torpedoes and damages the Japanese tanker Nisshin Maru (16801 GRT) west of Shionomisaki, Japan in position 33º26'N, 135º38'E. (see map)

24 Apr, 1942
USS Trout (Lt.Cdr. F.W. Fenno) torpedoes and damages the Japanese merchant Tachibana Maru (6521 GRT) off Susami Kii in position 33º31'N, 135º29'E. (see map)

2 May, 1942
USS Trout (Lt.Cdr. F.W. Fenno) torpedoes and sinks the Japanese merchant Uzan Maru (5019 GRT) off the southeast coast of Honshu, Japan in position 33º26'N, 135º52'E. (see map)

4 May, 1942
USS Trout (Lt.Cdr. F.W. Fenno) torpedoes and sinks the Japanese auxiliary gunboat Kongosan Maru (2119 GRT) off the southeast coast of Honshu, Japan in position 33º32'N, 136º05'E. (see map)

17 May, 1942
USS Trout (Lt.Cdr. F.W. Fenno) ended her 3th war patrol at Pearl Harbour.

21 May, 1942
USS Trout (Lt.Cdr. F.W. Fenno) departs Pearl Harbour for her 4th war patrol. She was ordered to patrol off Midway.

9 Jun, 1942
USS Trout (Lt.Cdr. F.W. Fenno) picks up two survivors from the sunken Japanese heavy cruiser Mikuma (offsite link) and takes them to Pearl Harbour.

14 Jun, 1942
USS Trout (Lt.Cdr. F.W. Fenno) ends her 4th war patrol at Pearl Harbour.

27 Aug, 1942
USS Trout (Lt.Cdr. L.P. Ramage) departs Pearl Harbour for her 5th war patrol. She is ordered to patrol off Truk in the Caroline Islands.

21 Sep, 1942
USS Trout (Lt.Cdr. L.P. Ramage) torpedoes and sinks the Japanese auxiliary netlayer Koei Maru (863 GRT) south of Truk in position 06º54'N, 151º51'E. (see map)

28 Sep, 1942
USS Trout (Lt.Cdr. L.P. Ramage) torpedoes and damages the Japanese escort carrier Taiyo (offsite link) east of Truk in position 06º59'N, 151º45'E. (see map)

3 Oct, 1942
USS Trout (Lt.Cdr. L.P. Ramage) is damaged by a Japanese aerial bomb off Truk. She is forced to terminate her patrol as both her periscopes are out of action.

13 Oct, 1942
USS Trout (Lt.Cdr. L.P. Ramage) ends her 5th war patrol at Brisbane, Australia.

26 Oct, 1942
USS Trout (Lt.Cdr. L.P. Ramage) departs Brisbane for her 6th war patrol. She is ordered to patrol in the Solomons Islands area.

23 Nov, 1942
USS Trout (Lt.Cdr. L.P. Ramage) ended her 6th war patrol at Brisbane.

29 Dec, 1942
USS Trout (Lt.Cdr. L.P. Ramage) departed Fremantle for her 7th war patrol. She was ordered to patrol in the South China Sea.

11 Jan, 1943
USS Trout (Lt.Cdr. L.P. Ramage) torpedoes and damages the Japanese tanker Kyokuko Maru (17549 GRT) off Miri, Borneo in position 04º24'N, 113º51'E. (see map)

18 Jan, 1943
USS Trout (Lt.Cdr. L.P. Ramage) sinks two Japanese sampams with gunfire off the coast off Indo-China in position 12º37'N, 109º30'E. (see map)

21 Jan, 1943
USS Trout (Lt.Cdr. L.P. Ramage) torpedoes and damages the Japanese auxiliary gunboat Eifuku Maru (3520 GRT) off the coast of Indo-China in position 11º25'N, 109º22'E. (see map)

7 Feb, 1943
USS Trout (Lt.Cdr. L.P. Ramage) torpedoes and damages the Japanese tanker Nisshin Maru (16801 GRT) off Miri, Borneo in position 04º31'N, 114º52'E. (see map)

14 Feb, 1943
USS Trout (Lt.Cdr. L.P. Ramage) torpedoes and damages the Japanese auxiliary gunboat Hirotama Maru (1911 GRT) at the south entrance to Makassar Strait in position 04º11'S, 117º45'E. Trout surfaces to sink the ship with gunfire but 7 of her crew were wounded by gunfire from the Japanese ship. Lt.Cdr. Ramage then decided to finish off the Japanese ship with a torpedo. (see map)

25 Feb, 1943
USS Trout (Lt.Cdr. L.P. Ramage) ended her 7th war patrol at Fremantle.

22 Mar, 1943
USS Trout (Lt.Cdr. L.P. Ramage) left Fremantle for her 8th war patrol. She was ordered to lay mines in the Api Passage north of Borneo.

7 Apr, 1943
USS Trout (Lt.Cdr. L.P. Ramage) lays her mines off Sarawak, Borneo.

3 May, 1943
USS Trout (Lt.Cdr. L.P. Ramage) ended her 8th war patrol at Fremantle.

26 May, 1943
The Japanese tanker Palembang Maru (5236 GRT) hits a mine north of Borneo in position 02º00'N, 109º15'E and is damaged. The mine is most likely laid by USS Trout (Lt.Cdr. L.P. Ramage) on 7 April 1943. (see map)

27 May, 1943
USS Trout (Lt.Cdr. A.H. Clark) left Fremantle for her 9th war patrol. She was ordered to lands men and supplies on Mindanao.

12 Jun, 1943
USS Trout (Lt.Cdr. A.H. Clark) lands men and supplies on Mindanao, Philippines.

15 Jun, 1943
USS Trout (Lt.Cdr. A.H. Clark) torpedoes and damages the Japanese tanker Sanraku Maru (3000 GRT) off Sibitu in the Celebes Sea in position 05º09'N, 119º38'E. (see map)

2 Jul, 1943
USS Trout (Lt.Cdr. A.H. Clark) torpedoes and sinks the Japanese transport ship Isuzu Maru (2866 GRT) off the north coast of Marinduque Island, Philippines in position 13º36'N, 121º49'E. (see map)

9 Jul, 1943
USS Trout (Lt.Cdr. A.H. Clark) pickes up a party of five American officers off the south coast of Mindanao.

20 Jul, 1943
USS Trout (Lt.Cdr. A.H. Clark) ends her 9th war patrol at Fremantle.

12 Aug, 1943
USS Trout (Lt.Cdr. A.H. Clark) departs Fremantle for her 10th war patrol. She was ordered to patrol the Surigao and San Bernardino straits in the Philippines.

25 Aug, 1943
USS Trout (Lt.Cdr. A.H. Clark) sinks a Japanese fishing vessel with gunfire in position 00º32'N, 125º18'E. (see map)

23 Sep, 1943
USS Trout (Lt.Cdr. A.H. Clark) torpedoes and sinks the Japanese transport ship Ryotoku Maru (3438 GRT) and the Japanese merchant Yamashiro Maru (3427 GRT) north-west of the Mariana Islands in position 20º45'N, 142º10'E. (see map)

4 Oct, 1943
USS Trout (Lt.Cdr. A.H. Clark) ended her 10th war patrol at Pearl Harbour. She was ordered to the Mare Island Navy Yard for an overhaul.

8 Feb, 1944
With her overhaul completed USS Trout (Lt.Cdr. A.H. Clark) departed Pearl Harbour for her 11th war patrol. She was ordered to patrol in the East China Sea.

27 Feb, 1944
USS Trout (Lt.Cdr. A.H. Clark) torpedoes and sinks the Japanese transport ship Aki Maru (11409 GRT) east of Formosa in position 22º40'N, 131º50'E. (see map)

29 Feb, 1944
USS Trout (Lt.Cdr. A.H. Clark) torpedoes and sinks the Japanese transport ship Sakito Maru (7126 GRT) southeast of Okinawa in position 22º40'N, 131º50'E. Trout is later sunk, most likely by the Japanese destroyer Asashimo (offsite link) in position 22º40'N, 131º45'E. (see map)