| Navy | The US Navy |
| Type | Patrol craft |
| Class | Prototypes |
| Pennant | PC-451 |
| Built by | Defoe Shipbuilding Co. (Bay City, Michigan, U.S.A.) |
| Ordered | 15 Jun 1939 |
| Laid down | 28 Sep 1939 |
| Launched | 23 May 1940 |
| Commissioned | 12 Aug 1940 |
| End service | 2 Dec 1945 |
| History | Displacement: 348 BRT Decommissioned on 2 December 1945 |
Commands listed for USS PC-451 (PC-451)
Please note that we're still working on this section.
| Commander | From | To | |
| 1 | Joe Wood Boulware, USN | 12 Aug 1940 | mid 1942 |
| 2 | Frederic David Kellogg, USN | mid 1942 | Aug 1943 |
| 3 | F. H. Oldham, USNR | Aug 1943 | Jul 1944 |
| 4 | P. W. Thornton, USNR | 1 Jul 1944 | 28 Mar 1945 |
| 5 | H. D. Bemiss, Jr., USNR | 28 Mar 1945 | 25 Oct 1945 |
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Notable events involving PC-451 include:
11 Apr 1945
USS Dentuda (Cdr. J.S. McCain, Jr., USN) conducted exercises off Key West together with USS PC-451 (Lt.(jg) H.D. Bemiss, Jr., USNR).