Like all post-E8British E-class submarines, E21 had a displacement of 662 long tons (673 t) at the surface and 807 long tons (820 t) while submerged. She had a total length of 180 feet (55 m)[1] and a beam of 22 feet 8.5 inches (6.922 m). She was powered by two 800 horsepower (600 kW) Vickers eight-cylinder two-stroke diesel engines and two 420 horsepower (310 kW) electric motors.[2][3] The submarine had a maximum surface speed of 16 knots (30 km/h; 18 mph) and a submerged speed of 10 knots (19 km/h; 12 mph). British E-class submarines had fuel capacities of 50 long tons (51 t) of diesel and ranges of 3,255 miles (5,238 km; 2,829 nmi) when travelling at 10 knots (19 km/h; 12 mph).[1]E21 was capable of operating submerged for five hours when travelling at 5 knots (9.3 km/h; 5.8 mph).
E21 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; a total of 10 torpedoes were carried.[2]
E-Class submarines had wireless systems with 1 kilowatt (1.3 hp) power ratings; in some submarines, these were later upgraded to 3 kilowatts (4.0 hp) systems by removing a midship torpedo tube. Their maximum design depth was 100 feet (30 m) although in service some reached depths of below 200 feet (61 m). Some submarines contained Fessenden oscillator systems.[1]
british, class, submarine, built, vickers, barrow, furness, launched, july, 1915, commissioned, october, 1915, sold, december, 1921, historyunited, kingdomnamebuildervickers, barrowlaunched24, july, 1915commissioned1, october, 1915fatesold, december, 1921gener. HMS E21 was a British E class submarine built by Vickers Barrow in Furness She was launched on 24 July 1915 and commissioned on 1 October 1915 E21 was sold on 14 December 1921 HistoryUnited KingdomNameHMS E21BuilderVickers BarrowLaunched24 July 1915Commissioned1 October 1915FateSold 14 December 1921General characteristicsClass and typeE class submarineDisplacement662 long tons 673 t surfaced 807 long tons 820 t submergedLength181 ft 55 m Beam15 ft 4 6 m Propulsion2 800 hp 597 kW diesel 2 420 hp 313 kW electric 2 screwsSpeed15 knots 28 km h 17 mph surfaced 10 knots 19 km h 12 mph submergedRange3 000 nmi 5 600 km at 10 kn 19 km h 12 mph surfaced 65 nmi 120 km at 5 kn 9 3 km h 5 8 mph submergedComplement3 officers 28 ratingsArmament5 18 inch 450 mm torpedo tubes 2 bow 2 beam 1 stern 1 12 pounder gun Contents 1 Design 2 Crew 3 References 4 BibliographyDesign editLike all post E8 British E class submarines E21 had a displacement of 662 long tons 673 t at the surface and 807 long tons 820 t while submerged She had a total length of 180 feet 55 m 1 and a beam of 22 feet 8 5 inches 6 922 m She was powered by two 800 horsepower 600 kW Vickers eight cylinder two stroke diesel engines and two 420 horsepower 310 kW electric motors 2 3 The submarine had a maximum surface speed of 16 knots 30 km h 18 mph and a submerged speed of 10 knots 19 km h 12 mph British E class submarines had fuel capacities of 50 long tons 51 t of diesel and ranges of 3 255 miles 5 238 km 2 829 nmi when travelling at 10 knots 19 km h 12 mph 1 E21 was capable of operating submerged for five hours when travelling at 5 knots 9 3 km h 5 8 mph E21 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 a total of 10 torpedoes were carried 2 E Class submarines had wireless systems with 1 kilowatt 1 3 hp power ratings in some submarines these were later upgraded to 3 kilowatts 4 0 hp systems by removing a midship torpedo tube Their maximum design depth was 100 feet 30 m although in service some reached depths of below 200 feet 61 m Some submarines contained Fessenden oscillator systems 1 Crew editHer complement was three officers and 28 men 1 References edit a b c d Innes McCartney Tony Bryan 20 February 2013 British Submarines of World War I Osprey Publishing pp 11 12 ISBN 978 1 4728 0035 0 a b Akerman P 1989 Encyclopaedia of British submarines 1901 1955 p 150 Maritime Books ISBN 1 904381 05 7 E Class Chatham Submarines Archived from the original on 13 August 2015 Retrieved 20 August 2015 Bibliography editHutchinson Robert 2001 Jane s Submarines War Beneath the Waves from 1776 to the Present Say London HarperCollins ISBN 978 0 00 710558 8 OCLC 53783010 Retrieved from https en wikipedia org w index php title HMS E21 amp oldid 1178596513, wikipedia, wiki, book, books, library,
