Like all post-E8 British E-class submarines, E19 had a displacement of 662LT at the surface and 807LT while submerged. She had a total length of 180feet[1] and a beam of 22feet. She was powered by two Vickers eight-cylinder two-stroke diesel engines and two electric motors.[2] [3] The submarine had a maximum surface speed of 16kn and a submerged speed of 10kn. British E-class submarines had fuel capacities of 50LT of diesel and ranges of 3255miles when travelling at 10kn.[1] E19 was capable of operating submerged for five hours when travelling at 5kn.
E19 was probably the first of the E-class to be fitted with a deck gun during construction, in this instance, possibly uniquely, with only a 2-pounder, 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; a total of 10 torpedoes were carried.[2]
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.[1]
Her complement was three officers and 28 men.[1]
Under the command of Lieutenant Commander Francis Cromie,[4] E19 was, in September 1915, the last of five British submarines to manage the passage through the Oresund into the Baltic Sea. She was then able to sink several German ships, most notably on 11 October 1915 when she sank four German freighters just south of Öland within a few hours and without any casualties. [5] [6] On 7 November 1915 E19 sank the German light cruiser .
E19 was scuttled by her crew outside Helsinki 1.5 nm south of Harmaja Light, Gulf of Finland, along with,,,,, and to avoid seizure by advancing German forces who had landed nearby.[7] [8]
A beer, Slottskällans Vrak, has been brewed using yeast recovered from beer bottles found on the wreck of SS Nicomedia, a ship sunk by E19 off Öland.[9]