| Name: | P 55 | 
| Type: | Submarine | 
| Keel: | 11/08/1941 | 
| Launched: | 28/07/1942 | 
| Completed: | 29/11/1942 | 
| Builder: | Vickers-Armstrongs Ltd | 
| Yard: | High Walker | 
| Yard Number: | 44 | 
| Dimensions: | 545disp surf, 740disp subm, 197.0ft x 16.0 x 12.8(draft)ft | 
| Engines: | 2 x Oil engines, RXS type, 6cyl (9.5 x 12ins), 400bhp; 2 x Electric motors, 275Kw | 
| Engines by: | Davey, Paxman & Co Ltd, Colchester | 
| Paxman Ricardo diesel generators | |
| Propulsion: | 2 x Screws, 11.5knots surf, 9.0knots subm | 
| Construction: | Steel | 
| Armament: | 1 x 3.0ins gun, 4 x 21.0ins torpedoes | 
| History: | |
| 29/11/1942 | British Royal Navy | 
| 1943 | Renamed UNSPARING | 
| 14/02/1946 | Broken up | 
| Comments: | Member of the U Class (Group 2) of submarines | 
| 14/02/1946: Sold for breaking up by TW Ward Ltd, Inverkeithing | 

Above photo as UNSPARING is copyright of the Imperial War Museum

Profile & Decks plan of a typical U/V Class (Group 2) courtesy of MP Cocker. Click HERE to enlarge