|Builder:||Vickers, Sons & Maxim Ltd. Barrow-in-Furness, England|
|Launched:||8 March 1905|
|Commissioned:||11 July 1905|
|Fate:||Scrapped May 1920|
|Class & type:||A class submarine|
|Displacement:||190 tons surfaced, 207 tons submerged|
|Length:||105.25 ft (32.08 m)|
|Beam:||12.75 ft (3.89 m)|
|Draught:||10.5 ft (3.2 m)|
550 hp petrol engine150 hp (110 kW) electric engine
11 knots (20 km/h) maximum surfaced8 knots (15 km/h) maximum submerged
325 nautical miles (602 km) at 11 knots (20 km/h) surfaced20 nautical miles (37 km) at 6 knots (11 km/h) submerged
|Complement:||11 (2 officers and 9 ratings)|
|Armament:||Two 18 inch (457 mm) torpedo tubes, plus two reloads|
She was a member of Group Two of the first British A-class of submarines (a second, much different A-class submarine appeared towards the end of the Second World War). As with the other members of her class, she was built at Vickers Barrow-in-Furness.
- Colledge, J. J.; Warlow, Ben (2006) . Ships of the Royal Navy: The Complete Record of all Fighting Ships of the Royal Navy (Rev. ed.). London: Chatham Publishing. ISBN 978-1-86176-281-8. OCLC 67375475.
- "A Class (1902) Submarines Class Overview". Maritime Quest. Retrieved 2007-08-06.
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