HMS E18

E18 shortly after passing through the Øresund in September 1915. Note the camouflage paintwork to prevent detection by shore observers
History
United Kingdom
Name	E18
Builder	Vickers
Laid down	1 January 1914
Launched	4 March 1915
Commissioned	6 June 1915
Fate	Lost with all hands, late May 1916
General characteristics
Class and type	E-class submarine
Displacement	662 tons (surfaced 807 tons (submerged)
Length	54.86 m
Beam	6.86 m
Draught	3.81 m
Propulsion	Twin propellers, 2 × 800 bhp (600 kW) Vickers diesel, 2 × 420 shp (313 kW) electric motors
Speed	15.25 knots (surfaced) 9.75 knots (submerged)
Range	325 nm surfaced
Endurance	24 days
Complement	3 officers, 28 ratings
Armament	2 × 18 inch bow tube 2 × 18 inch beam tubes 1 × 18 inch stern tube (10 torpedoes) 1 × 12 pdr deck gun

HMS E18 was an E-class submarine of the Royal Navy, launched in 1915 and lost in the Baltic Sea in May 1916 while operating out of Reval. The exact circumstances surrounding the sinking remain a mystery. The wreck of the submarine was discovered in October 2009.