Minesweeper of the Halcyon class
| Navy | The Royal Navy |
| Type | Minesweeper |
| Class | Halcyon |
| Pennant | J 99 |
| Built by | Ailsa Shipbuilding Co. Ltd. (Troon, Scotland) : Thornycroft (Southampton, U.K.) |
| Ordered | |
| Laid down | 12 Dec, 1936 |
| Launched | 6 Oct, 1937 |
| Commissioned | 9 Jun, 1938 |
| End service | |
| Loss position | |
| |
| History | Sold 3 September 1946.
Commanding Officers:
Cdr. A. Jones, RN
1 April 1939 – 28 September 1939
Lt.Cdr. D.H. Fryer, RN
28 September 1939 – 21 June 1940
Cdr. Reginald Ernest Terry, RN
21 June 1940 – 14 October 1942
OBE 22 November 1940
Cdr. H.G.A. Lewis, RN
14 October 1942 – 5 January 1944
A/Cdr. Trevor George Payne Crick, DSC and Bar, RN
5 January 1944 – 25 December 1944
OBE 5 December 1944
A/Lt.Cdr. Harry Layland Dudley Hoare, RNR
25 December 1944 – still in command in October 1945 according to the Navy List |
| Noteable events involving Jason include: 25 Sep, 1940 HMS Jason (Lt.Cdr. R.E. Terry, RN) picks up 18 survivors from the British merchant Mabriton that was torpedoed and sunk by the German submarine U-32 west-south-west of Rockall in position 56º12'N, 23º00'W. 19 Oct, 1940 HMS Jason (Lt.Cdr. R.E. Terry, RN) picks up 39 survivors from the Dutch merchant Bilderdijk that was torpedoed and sunk in the North Atlantic in position 56º35'N, 17º15'W by the German submarine U-38.
HMS Jason also picks up 40 survivors from the British merchant Uganda that was torpedoed and sunk in the North Atlantic in position 56º35'N, 17º15'W by the German submarine U-47.
20 Oct, 1940 HMS Jason (Lt.Cdr. R.E. Terry, RN) picks up 111 survivors from the British merchant Loch Lomond that was torpedoed and sunk by the German submarine U-100 south-west of Rockall in position 56º00'N, 14º30'W. |