HMS K15

HMS K15 was a K class submarine built by Scotts, Greenock. She was laid down on 19 April 1916 and was commissioned on 30 April 1918.

K15 sank due to an accident, when moored alongside the light cruiser HMS Canterbury (1915) at Portsmouth Harbour on 25 June 1921. She was then salved in July 1921. K15 was sold in August 1924 in Upnor.