HMS C17 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 1919.
Design and description The C class was essentially a repeat of the preceding B class, albeit with better performance underwater. The submarine had a length of overall, a beam of and a mean draught of . They displaced on the surface and submerged. The C-class submarines had a crew of two officers and fourteen ratings.Gardiner & Gray, p. 87
For surface running, the boats were powered by a single 16-cylinder Vickers petrol engine that drove one propeller shaft. When submerged the propeller was driven by a electric motor. They could reach on the surface and underwater. On the surface, the C class had a range of at .Harrison, Chapter 3
The boats were armed with two 18-inch (45 cm) 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.Harrison, Chapter 27
Construction and career C17 was built by Chatham Dockyard, laid down on 11 March 1907 and was commissioned on 13 May 1909. The boat collided with in the North Sea, east of Cromer, Norfolk on 14 July 1909, and in May 1917 she collided with the destroyer and sank. She was repaired, but was sold for scrap on 20 November 1919.
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