| Navy | The US Navy |
| Type | Submarine chaser |
| Class | SC-497 |
| Pennant | SC-646 |
| Built by | Robinson Marine Construction. Co. (Benton Harbor, Michigan, U.S.A.) |
| Ordered | 30 Jul 1941 |
| Laid down | 23 Sep 1941 |
| Launched | 21 May 1942 |
| Commissioned | 1 Jul 1942 |
| End service | 26 May 1945 |
| History | Transferred to the USSR on 26 May 1945 |
We don't have any commands listed for USS SC-646 (SC-646)
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