| Built By: | Vickers (Barrow) |
| Build Group: | C2 |
| Fate: | Scrapped in China in 1919 |
1914: Attached to China Squadron
| 07-04-1909 | Laid Down |
| 10-02-1910 | Launched |
| 31-03-1910 | Completed |
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| Length overall | 143 ft |
| Beam | 13 ft |
| Draught | 11.5 ft |
| Displacement | Surface 290 tons |
| Submerged 321 tons | |
| Diving Depth | 100 ft |
| Speed | Surface 13 knots (design) |
| Surface 13+ knots (service) | |
| Submerged 7.5+ knots (design) | |
| Submerged 8 knots (service) | |
| Machinery | 600 hp petrol engine |
| 200 hp electric motor | |
| Fuel | 15.5 tons (Petrol) |
| No. of shafts | 1 |
| Propeller | 3 blades, 5 ft 7 inch diameter |
| Armament | 2 x 18 inch bow torpedo tubes (4 torpedoes carried) |
| Endurance | Surface: 1300 miles at 9 knots (design) |
| Surface: 910 miles at full power (service) | |
| Submerged: 16 miles at 8 knots | |
| Complement | 2 x officers, 14 x ratings |
Descriptions of the events in WWII that led to the loss of Royal Navy Submarines in actions where the submarines were sunk, usually by scuttling, with the captains and crew taken prisoner. Included are two variations - in one case the submarine was captured and in another the captain was killed in action.
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