| Navy | The Royal Navy |
| Type | Motor minesweeper |
| Class | MMS I |
| Pennant | J 778 |
| Built by | Richard Irvin & Sons (Peterhead, Scotland, U.K.) |
| Ordered | 9 Jun 1942 |
| Laid down | |
| Launched | 10 Nov 1942 |
| Commissioned | 8 Mar 1943 |
| Lost | 14 Sep 1944 |
| History | Wrecked off St. Malo, France on 14 September 1944, beyond salvage |
Commands listed for HMS MMS 278 (J 778)
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 | K J Dawe, RNVR | 13 Feb 1943 | 22 Apr 1943 |
| 2 | T/Lt. Vivian Adams Mawson, RNVR | 22 Apr 1943 | 8 Jun 1943 |
| 3 | T/Lt. Edward Harwood Batt, RNVR | 8 Jun 1943 | 14 Sep 1944 |
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