| Built By: | Fairfield (Clyde) |
| Build Group: | L2 |
| Fate: | Broken Up February 1932 |
| 16-11-1916 | Laid Down |
| 16-01-1918 | Launched |
| 27-03-1918 | Completed |
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| Length overall | 238 ft 7 inch |
| Beam | 23 ft 6 inch |
| Draught | 13 ft 3 inch |
| Displacement | 914 tons (surface) |
| 1089 tons (submerged) | |
| Diving Depth | 150 ft |
| Speed | Surface 17 knots (design) |
| Surface 17 to 17.5 knots (service) | |
| Submerged 10.5 knots (design) | |
| Submerged 10.5+ knots (service) | |
| No. of shafts | 2 |
| Propeller | 3 blades, 5 ft 7 inch diameter |
| Armament | 4 x 18 inch bow tubes |
| 2 x 18 inch beam tubes | |
| (10 torpedoes carried) | |
| 1 x 4 inch gun | |
| Endurance | Surface: 2800 miles at full power (design) |
| Surface: 2850 miles at full power or 3600 miles at half full power (service) | |
| Submerged: 14 miles at full power (design) | |
| Submerged: 14 miles at full power or 65 miles at 5 knots (service) | |
| Complement | 38 |
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| Class: | 1935 - 1970: T Class |
| Built By: | Vickers (Barrow) |
| Build Group: | T 3 |
| Fate: | |
| Scrapped in April 1960 at Dunston. | |
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