| Navy | The Royal Navy |
| Type | Motor minesweeper |
| Class | MMS I |
| Pennant | J 603 |
| Built by | Shelburne Shipbuilders (Shelburne, Canada) |
| Ordered | 13 Jan 1941 |
| Laid down | |
| Launched | 4 May 1942 |
| Commissioned | 30 Sep 1942 |
| End service | |
| History | Sold in October 1956 |
Commands listed for HMS MMS 103 (J 603)
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 | C Greening, RNR | Feb 1943 | 17 Apr 1943 |
| 2 | T/Lt. Francis Henry Wilson Graybrook, RNR | 17 Apr 1943 | mid 1943 |
| 3 | Frank Cecil Villiers Murray, RNVR | mid 1943 | Dec 1944 |
| 4 | A Montgomery, RNVR | Dec 1944 | 17 Mar 1945 |
| 5 | R J Bates, RNVR | 17 Mar 1945 | early 1946 |
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