| Navy | The Royal Navy |
| Type | Submarine |
| Class | S |
| Pennant | N 47 |
| Built by | Scotts Shipbuilding & Engineering Co. (Greenock, Scotland) |
| Ordered | |
| Laid down | 25 May, 1934 |
| Launched | 28 Nov, 1935 |
| Commissioned | 12 Mar, 1936 |
| End service | 23 Jun, 1945 |
| Loss position | |
| History | Decommissioned at Halifax, Nova Scotia, Canada on 23 June 1945. Sold to be broken up for scrap in November 1945. Scrapped at Montreal, Canada.
Commanding Officers: Lt. Patrick Lainson Field, RN Lt. Richard Prendergast Raikes, RN ??? Lt. A.J.R. Whitehead, RN ??? Lt. Denis Woolnough Mills, DSC, RN Lt. B. Collins HMS Seawolf is not listed as active unit in the July 1945 Navy list |
| Noteable events involving Seawolf include: 6 Oct, 1939 18 Apr, 1940 22 Nov, 1941 6 Mar, 1942 29 Jan, 1943 |

