HMS D6

HMS D6 was a British D class submarine built by Vickers, Barrow. D6 was laid down on 24 February 1910, launched 24 October 1911 and was commissioned on 19 April 1912. D6 was the first of the D class to be armed with guns forward of the conning tower.

Sinking
D6 was sunk by UB-73 73 miles north of Inishtrahull Island off the west coast of Ireland on 24 or 28 June 1918. There were two survivors who were taken prisoner. Their post-war report apparently prompted the British to conclude that the torpedo that sank her had employed a magnetic pistol.