HMS E23
HMS E23 was an [British British E-class submarine|E-class submarine|E-class] submarine built by Vickers, Barrow-in-Furness. She was laid down on 28 September 1914 and was commissioned on 6 December 1915. E23 torpedoed the German dreadnought, holing her off Terschelling on 19 August 1916. E23 was sold on 6 September 1922 in Sunderland.
Design
Like all post-E8 British E-class submarines, E23 had a displacement of at the surface and while submerged. She had a length of and a beam of. She was powered by two Vickers eight-cylinder two-stroke diesel engines and two electric motors. The submarine had a maximum surface speed of and a submerged speed of. British E-class submarines had a fuel capacity of of diesel and ranges of when travelling at. E23 was capable of operating submerged for five hours when travelling at.E23 was armed with a 12-pounder QF gun, mounted forward of the conning tower. She had five 18-inch (450 mm) torpedo tubes, two in the bow, one either side amidships and one in the stern with ten torpedoes on board.
E-class submarines had wireless systems with power ratings; in some submarines, these were later upgraded to systems by removing a midship torpedo tube. Their maximum design depth was although in service some reached depths of below. Some submarines contained Fessenden oscillator systems.