HMS E15 was an E-class submarine of the Royal Navy, commissioned in 1914.
Wreck of the E15 inspected by Turkish and German personnel.
HMS Triumph's picket boat returning to the battleship after the E15 expedition.
British E-class submarine
The British E-class submarines started out as improved versions of the British D-class submarine. The E class served with the Royal Navy throughout World War I as the backbone of the submarine fleet. The last surviving E class submarines were withdrawn from service by 1922.
HMS E1
Interior of an E-class submarine, possibly E34
12-pounder gun of an E-class submarine