The C-class boats of the 1907–08 and subsequent Naval Programmes were modified to improve their speed, both above and below the surface. The submarine had a length of 142feet 3inches (43.4m)overall, a beam of 13feet 7inches (4.1m) and a mean draft of 11feet 6inches (3.5m). They displaced290 long tons (290t) on the surface and 320 long tons (330t) submerged. The C-class submarines had a crew of two officers and fourteen ratings.[1]
For surface running, the boats were powered by a single 12-cylinder[2]600-brake-horsepower (447kW)Vickerspetrol engine that drove one propeller shaft. When submerged the propeller was driven by a 300-horsepower (224kW)electric motor.[1] They could reach 13 knots (24km/h; 15mph) on the surface and 8 knots (15km/h; 9.2mph) underwater. On the surface, the C class had a range of 910 nautical miles (1,690km; 1,050mi) at 12 knots (22km/h; 14mph).[3]
The boats were armed with two 18-inch (45cm)torpedo tubes in the bow. They could carry a pair of reload torpedoes, but generally did not as they would have to remove an equal weight of fuel in compensation.[4]
Construction and career
C22 was laid down on 4 February 1908 by Vickers at their Barrow-in-Furnessshipyard, launched on 10 October, and completed on 5 May 1909. During World War I, the boat was generally used for coastal defence and training in home waters. C22 was sold on 2 February 1920.
Akermann, Paul (2002). Encyclopaedia of British Submarines 1901–1955 (reprint of the 1989ed.). Penzance, Cornwall: Periscope Publishing. ISBN1-904381-05-7.
Gardiner, Robert & Gray, Randal, eds. (1985). Conway's All the World's Fighting Ships 1906–1921. Annapolis, Maryland: Naval Institute Press. ISBN0-85177-245-5.