| Navy | The US Navy |
| Type | Patrol craft |
| Class | PC-461 |
| Pennant | PC-550 |
| Built by | Leatham D. Smith Shipbuilding Co. (Sturgeon Bay, Wisconsin, U.S.A.) |
| Ordered | 1 Apr 1941 |
| Laid down | 6 Jun 1941 |
| Launched | 8 Mar 1942 |
| Commissioned | 28 Apr 1942 |
| End service | 15 Jun 1944 |
| History | Transferred to France on 15 June 1944 being renamed Le Vigilant |
Commands listed for USS PC-550 (PC-550)
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 | E W Crandall, USNR | 28 Apr 1942 | Early 1943 |
| 2 | Sherman Farnham, USNR | Early 1943 | Mid/late43 |
| 3 | John L Clark, USNR | Mid/late43 | 4 Apr 1944 |
| 4 | B J Belmore, USNR | 4 Apr 1944 | 15 Jun 1944 |
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