| Navy | The Royal Navy |
| Type | ASW Whaler |
| Class | [No specific class] |
| Pennant | |
| Built by | Framnæs mekaniske Værksted (Sandefjord, Norway) |
| Ordered | |
| Laid down | |
| Launched | |
| Commissioned | Apr 1941 |
| Lost | 3 Jun 1942 |
| Loss position | 32.06N, 24.12E |
| History | Completed in September 1936. Kos XIX was renamed Cocker in September 1941. HMS Cocker (T/Lt. D.H. Crampton, RNR) was torpedoed and sunk east of Tobruk in position 32º06'N, 24º12'E by the German motor torpedo boat S 57. |
Commands listed for HMS Kos XIX
Please note that we're still working on this section.
| Commander | From | To | |
| 1 | Lt. Leslie Halman Davies, RNR | 28 Apr 1941 | Late 1941 |
| 2 | T/Lt. John Scott, RNVR | late 1941 | mid 1942 |
| 3 | T/Lt. Denis Hugh Crampton, RNR | mid 1942 | 3 Jun 1942 |
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