| Navy | The US Navy |
| Type | Submarine |
| Class | Balao |
| Pennant | 391 |
| Built by | Portsmouth Navy Yard (Kittery, Maine, U.S.A.) |
| Ordered | 8 Jun 1942 |
| Laid down | 14 Jul 1943 |
| Launched | 27 Oct 1943 |
| Commissioned | 19 Feb 1944 |
| End service | 1 Jul 1970 |
| History | Decommissioned in April 1952 . |
Commands listed for USS Pomfret (391)
Please note that we're still working on this section
and that we only list Commanding Officers for the duration of the Second World War.
| Commander | From | To | |
| 1 | T/Cdr. Frank Clements Acker, USN | 19 Feb 1944 | 30 Sep 1944 |
| 2 | Frederic B. Clarke, USN | 30 Sep 1944 | 2 Oct 1944 |
| 3 | T/Lt.Cdr. John Borden Hess, USN | 14 Oct 1944 | 5 Jun 1948 |
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Notable events involving Pomfret include:
24 Apr 1944
USS Pomfret arrived at Key West, Florida for duty with the Fleet Sound School.
25 Apr 1944
USS Pomfret conducted exercises off Key West.
26 Apr 1944
USS Pomfret conducted exercises off Key West.
27 Apr 1944
USS Pomfret conducted exercises off Key West.
28 Apr 1944
USS Pomfret conducted exercises off Key West.
29 Apr 1944
USS Pomfret conducted exercises off Key West.
1 Jun 1944
With her trials and initial training completed USS Pomfret (Cdr. F.C. Acker) arrived at Pearl Harbor.
23 Jun 1944
USS Pomfret (Cdr. F.C. Acker) departed from Pearl Harbor for her 1st war patrol. She was ordered to patrol in Japanese home waters east of Kyusyu.
16 Aug 1944
USS Pomfret (Cdr. F.C. Acker) ended her 1st war patrol at Midway.
10 Sep 1944
USS Pomfret (Cdr. F.C. Acker) departed from Midway for her 2nd war patrol. She was ordered to patrol in Luzon Straits.
2 Oct 1944
USS Pomfret (Cdr. F.C. Acker) torpedoed and sank the Japanese troop transport Tsuyama Maru (6962 GRT) and torpedoed and damaged the Japanese troop transport Makassar Maru (4026 GRT) south of Formosa in position 21°00'N, 121°46'E.
12 Oct 1944
USS Pomfret (Cdr. F.C. Acker) ended her 2nd war patrol at Saipan.
1 Nov 1944
USS Pomfret (Lt.Cdr. J.B. Hess) departed from Saipan for her 3rd war patrol. She was ordered to patrol south of Formosa.
2 Nov 1944
USS Pomfret (Lt.Cdr. J.B. Hess) torpedoed and sank the Japanese troop transport Hamburg Maru (5271 GRT) and torpedoed and damaged the Japanese troop transport Atlas Maru (7343 GRT) in Luzon Strait in position 20°20'N, 121°30'E. The next day the Atlas Maru is beached off Sabtang Island in position 20°18'N, 121°51'E and declared a total loss.
25 Nov 1944
USS Pomfret (Lt.Cdr. J.B. Hess) torpedoed and sank the Japanese troop transport Shoho Maru (1358 GRT) in Luzon Strait in position 20°18'N, 121°34'E.
It is claimed in some sources that in this attack Pomfret also sank patrol boat #38 (ed DD Yomogi). However, Shoho maru was not part of the convoy escorted by #38, therefore there is no basis for this claim. #38 was sunk in the 0125 hrs attack by USS Atule.
15 Dec 1944
USS Pomfret (Lt.Cdr. J.B. Hess) ended her 3rd war patrol at Pearl Harbor.
25 Jan 1945
USS Pomfret (Lt.Cdr. J.B. Hess) departed from Pearl Harbor for her 4th war patrol. She was ordered to patrol off Honshu, Japan.
30 Mar 1945
USS Pomfret (Lt.Cdr. J.B. Hess) ended her 4th war patrol at Midway.
26 Apr 1945
USS Pomfret (Lt.Cdr. J.B. Hess) departed from Midway for her 5th war patrol. She was ordered to patrol off the Kuril Islands.
6 Jun 1945
USS Pomfret (Lt.Cdr. J.B. Hess) ended her 5th war patrol at Midway.
2 Jul 1945
USS Pomfret (Cdr. J.B. Hess) departed from Midway for her 6th war patrol. She was ordered to patrol in the East China Sea.
26 Jul 1945
USS Pomfret (Cdr. J.B. Hess) sank two small Japanese vessel with gunfire in the East China Sea in position 33°47'N, 126°50'E.
8 Aug 1945
USS Pomfret (Cdr. J.B. Hess) sank a small Japanese vessel with gunfire in the East China Sea in position 32°01'N, 129°02'E.
11 Aug 1945
USS Pomfret (Cdr. J.B. Hess) sank a small Japanese vessel with gunfire in the East China Sea in position 32°46'N, 128°44'E.
13 Aug 1945
USS Pomfret (Cdr. J.B. Hess) sank a small Japanese vessel with gunfire in the East China Sea in position 33°48'N, 126°50'E.
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