| Navy | The Royal Navy |
| Type | Armed Yacht |
| Class | [No specific class] |
| Pennant | FY 018 |
| Built by | Day Summers & Co Ltd. (Northam, England, U.K.) |
| Ordered | |
| Laid down | |
| Launched | 1906 |
| Commissioned | |
| Lost | 17 Mar 1941 |
| History | Displacement: 597 tons. Completed in August 1906. Requisitioned by the Admiralty in September 1939. Served in A/S role. Renamed Mollusc in 1939. Bombed and sunk by German aircraft off Blyth on 17 March 1941. |
Commands listed for HMS Medusa (FY 018)
Please note that we're still working on this section.
| Commander | From | To | |
| 1 | Cdr. (retired) John Gilbert Sutton, RN | 11 Mar 1940 | 6 Sep 1940 |
| 2 | Cdr. (retired) Francis Theodor Hare, RN | 12 Sep 1940 | 30 Nov 1940 |
| 3 | Lt.Cdr. (retired) Robert Harvey Aldworth, RN | 30 Nov 1940 | Mar 1941 |
| 4 | N P Doyle, RNR | Mar 1941 | 17 Mar 1941 |
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Notable events involving Medusa include:
23 Feb 1941
HMS Sunfish (Lt. G.R. Colvin, RN) departed Blyth for Scapa Flow. She was escorted by HMS Mollusc (Lt.Cdr.(Retd.) R.H. Aldworth, RN) until 0440/24 when HMS Brilliant (Lt.Cdr. F.C. Brodrick, RN) took over the escort. (1)
Sources
- ADM 199/400
ADM numbers indicate documents at the British National Archives at Kew, London.