| Navy | The Royal Navy |
| Type | Minesweeper |
| Class | YMS |
| Pennant | J 840 |
| Built by | Barbour Boat Works (New Bern, North Carolina, U.S.A.) |
| Ordered | 14 Mar 1942 |
| Laid down | 7 Sep 1942 |
| Launched | 7 Dec 1942 |
| Commissioned | 15 Aug 1943 |
| End service | |
| History | Returned to the USN on 1 September 1947. |
| Former name | BYMS 40 |
Commands listed for HMS BYMS 2040 (J 840)
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. George Thomas Page, RNVR | 16 Aug 1943 | 11 Sep 1944 |
| 2 | T/Lt. James Malcolm Anderson, RNVR | 11 Sep 1944 | 9 Apr 1946 |
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