| Navy | The Royal Navy |
| Type | Motor minesweeper |
| Class | MMS I |
| Pennant | J 640 |
| Built by | Frank Curtis (Par, England, U.K.) |
| Ordered | 10 Mar 1941 |
| Laid down | |
| Launched | 5 Nov 1941 |
| Commissioned | 1 Mar 1942 |
| End service | |
| History | To Turkey in April 1946 |
Commands listed for HMS MMS 140 (J 640)
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. William Frederick Watson, RNR | 15 Jun 1942 | 18 Aug 1942 |
| 2 | P Buckner, RNVR | 18 Aug 1942 | 18 Jan 1945 |
| 3 | P A Ward, RNVR | 18 Jan 1945 | late 1945 |
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