HMS Unseen (P51)
| History | |
|---|---|
| United Kingdom | |
| Name | HMS Unseen | 
| Builder | Vickers Armstrong, Barrow-in-Furness | 
| Laid down | 30 July 1941 | 
| Launched | 16 April 1942 | 
| Commissioned | 2 July 1942 | 
| Fate | Scrapped September 1949 | 
| Badge | |
| General characteristics | |
| Displacement | 
  | 
| Length | 58.22 m (191 ft) | 
| Beam | 4.90 m (16 ft 1 in) | 
| Draught | 4.62 m (15 ft 2 in) | 
| Propulsion | 
  | 
| Speed | 
  | 
| Complement | 27-31 | 
| Armament | 
  | 
HMS Unseen (P51) was a Royal Navy U-class submarine built by Vickers-Armstrong at Barrow-in-Furness.