| Navy | The Royal Navy |
| Type | Motor Gun Boat |
| Class | Fairmile D |
| Pennant | MGB 637 |
| Built by | Alex Robertson & Sons Ltd. (Sandbank, Scotland, U.K.) |
| Ordered | 27 Apr 1941 |
| Laid down | |
| Launched | |
| Commissioned | Jan 1943 |
| Lost | 30 Jan 1946 |
| History | Reclassified as Motor Torpedo Boat MTB 637 in 1943 |
Commands listed for HMS MGB 637 (MGB 637)
Please note that we're still working on this section.
| Commander | From | To | |
| 1 | E F Smyth, RNVR | 28 Dec 1942 | 23 Jul 1943 |
| 2 | T/Lt. Basil Guy Pritchard de Mattos, RNVR | 23 Jul 1943 | 8 Aug 1943 |
| 3 | T/Lt. Ronald Perks, DSC, RNVR | 8 Aug 1943 | 26 Sep 1943 |
| 4 | R C Davidson, RNVR | 26 Sep 1943 | mid 1945 |
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