| 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
and that we only list Commanding Officers for the duration of the Second World War.
| 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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