HMS C7

HMS C38 - a typical C-class submarine
History
United Kingdom
Name	HMS C7
Builder	Vickers, Barrow
Laid down	9 December 1905
Launched	15 February 1907
Commissioned	23 May 1907
Fate	Sold for scrapping, 20 December 1919
General characteristics
Class and type	C-class submarine
Displacement	287 long tons (292 t) surfaced 316 long tons (321 t) submerged
Length	142 ft 3 in (43.4 m)
Beam	13 ft 7 in (4.1 m)
Draught	11 ft 6 in (3.5 m)
Installed power	600 bhp (450 kW) petrol 300 hp (220 kW) electric
Propulsion	1 × 16-cylinder Vickers petrol engine 1 × electric motor
Speed	12 kn (22 km/h; 14 mph) surfaced 7 kn (13 km/h; 8.1 mph) submerged
Range	910 nmi (1,690 km; 1,050 mi) at 12 kn (22 km/h; 14 mph) on the surface
Test depth	100 feet (30.5 m)
Complement	2 officers and 14 ratings
Armament	2 × 18 in (450 mm) bow torpedo tubes

HMS C7 was one of 38 C-class submarines built for the Royal Navy in the first decade of the 20th century. The boat survived the First World War and was sold for scrap in 1920.