| Navy | The Royal Navy |
| Type | Steam Gunboat |
| Class | SGB |
| Pennant | S 305 |
| Built by | Hawthorn Leslie & Co. (Hebburn-on-Tyne, U.K.) : Metropolitan Vickers |
| Ordered | 8 Nov 1940 |
| Laid down | 17 Apr 1941 |
| Launched | 27 Aug 1941 |
| Commissioned | 1 Apr 1942 |
| End service | |
| History | Renamed Grey Owl in 1943 |
Commands listed for HMS SGB 5 / Grey Owl (S 305)
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. Guy Horton Hummel, RNR | 1942 ? | 1942 ? |
| 2 | T/Lt. Richard Mallock Hall, RNVR | 18 Jan 1943 | 28 Sep 1944 |
| 3 | R B J Hawkey, RNVR | 28 Sep 1944 | late 1945 |
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