"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, south 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.