HMS E29
HMS E29 was a British E-class submarine built by Armstrong Whitworth, Newcastle-Upon-Tyne. She was launched on 1 June 1915 and commissioned in October 1915. E29 suffered an explosion in the battery compartment which killed four men on 9 January 1916. E29 was sold on 21 February 1922.
Design
Like all post-E8 British E-class submarines, the E21 had a displacement of at the surface and while submerged. She had a total 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 fuel capacities of of diesel and ranges of when travelling at. E21 was capable of operating submerged for five hours when travelling at.E21 was armed with a 12-pounder QF gun mounted forward of the conning tower. She had five 18 inch torpedo tubes, two in the bow, one on either side amidships, and one in the stern; a total of 10 torpedoes were carried.
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.