| Navy | The Royal Navy |
| Type | Minesweeper |
| Class | YMS |
| Pennant | J 820 |
| Built by | Bellingham Iron Works, Inc. (Bellingham, Washington, U.S.A.) |
| Ordered | 11 Jun 1941 |
| Laid down | 2 Aug 1941 |
| Launched | 27 Jun 1942 |
| Commissioned | 29 Aug 1942 |
| End service | |
| History | Returned to the USN on 10 July 1947. |
| Former name | BYMS 20 |
Commands listed for HMS BYMS 2020 (J 820)
Please note that we're still working on this section.
| Commander | From | To | |
| 1 | T/Lt. Albert Edward Barnett Brown, RNR | 4 Apr 1942 | 2 May 1942 |
| 2 | T/S.Lt. Hugh Grenville Ashworth, RNVR | 2 May 1942 | 7 Mar 1945 |
| 3 | T/Lt. Stanley Worthington Hills, RNVR | 7 Mar 1945 | Jan 1946 |
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