| Navy | The Royal Navy |
| Type | Corvette |
| Class | Castle |
| Pennant | K 405 |
| Built by | George Brown & Co. (Greenock, Scotland): Kincaid |
| Ordered | 19 Jan 1943 |
| Laid down | 12 Jun 1943 |
| Launched | 23 May 1944 |
| Commissioned | 11 Nov 1944 |
| End service | |
| History | In Reserve at Portsmouth during 1946-1949. HMS Alnwick Castle is not listed as active unit in the October 1945 Navy List |
Commands listed for HMS Alnwick Castle (K 405)
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| Commander | From | To | |
| 1 | A/Lt.Cdr. Herbert Arthur Stonehouse, DSC, RNR | 20 Jul 1944 | mid 1945 |
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Notable events involving Alnwick Castle include:
18 Dec 1944
HMS Vitality (Lt. K.S. Renshaw, DSC, RNR) conducted A/S exercises off Tobermory with HMS Alnwick Castle (A/Lt.Cdr. H.A. Stonehouse, DSC, RNR) and HMS Amberley Castle (T/A/Lt.Cdr. R. Edwards, RNVR). (1)
19 Dec 1944
HMS Vitality (Lt. K.S. Renshaw, DSC, RNR) conducted A/S exercises off Tobermory with HMS Loch Craggie (T/A/Lt.Cdr. C.L.L. Davies, RNVR), HMSAS Good Hope (T/Lt.Cdr. R.P. Dryden-Dymond, SANF(V)), HMS Alnwick Castle (A/Lt.Cdr. H.A. Stonehouse, DSC, RNR) and HMS Seabear (T/A/Lt.Cdr. A.R. Patton, RNVR). (1)
20 Dec 1944
HMS Vitality (Lt. K.S. Renshaw, DSC, RNR) conducted A/S exercises off Tobermory with HMS Seabear (T/A/Lt.Cdr. A.R. Patton, RNVR), HMS Alnwick Castle (A/Lt.Cdr. H.A. Stonehouse, DSC, RNR), HMS Loch Craggie (T/A/Lt.Cdr. C.L.L. Davies, RNVR) and HMS Snowdrop (Lt. J.B. Hogg, RNR). (1)
21 Dec 1944
HMS Vitality (Lt. K.S. Renshaw, DSC, RNR) conducted A/S exercises off Tobermory with HMS Snowdrop (Lt. J.B. Hogg, RNR), HMS Alnwick Castle (A/Lt.Cdr. H.A. Stonehouse, DSC, RNR) and HMSAS Good Hope (T/Lt.Cdr. R.P. Dryden-Dymond, SANF(V)). (1)
17 Feb 1945
German U-boat U-425 was sunk in the Barents Sea near Murmansk, Russia, in position 69°39'N, 35°50'E, by depth charges from the British sloop HMS Lark (Cdr.(Retd.) H. Lambton, RN) and the British corvette HMS Alnwick Castle (A/Lt.Cdr. H.A. Stonehouse, DSC, RNR).
Sources
- ADM 173/19424
ADM numbers indicate documents at the British National Archives at Kew, London.