| Navy | The Royal Navy |
| Type | Motor Gun Boat |
| Class | Fairmile D |
| Pennant | MGB 646 |
| Mod | Motor Gun Boat |
| Built by | Risdon Beazley Ltd. (Northam, England, U.K.) |
| Ordered | 18 Nov 1941 |
| Laid down | |
| Launched | |
| Commissioned | 19 Nov 1942 |
| End service | |
| History | Sold in August 1945 |
Commands listed for HMS MGB 646 (MGB 646)
Please note that we're still working on this section.
| Commander | From | To | |
| 1 | R A Forbes, RNVR | 28 Sep 1942 | 21 Oct 1943 |
| 2 | B L Knight-Lacklan, RNVR | 21 Oct 1943 | 7 Apr 1945 |
| 3 | P M Davies, RNVR | 7 Apr 1945 | mid 1945 |
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