HMS E12
{{short description|Submarine of the Royal Navy}}
{{Use dmy dates|date=March 2018}}
{{Use British English|date=March 2018}}
| {{Infobox ship begin}}
{{Infobox ship image |Ship image= |Ship caption= }} {{Infobox ship career |Hide header= |Ship country= United Kingdom |Ship flag={{shipboxflag|United Kingdom|naval}} |Ship name= E12 |Ship namesake= |Ship ordered= |Ship builder=HM Dockyard, Chatham |Ship original cost=£101,900 |Ship laid down=16 December 1912 |Ship launched=5 September 1914 |Ship acquired= |Ship commissioned=14 October 1914 |Ship decommissioned= |Ship in service= |Ship out of service= |Ship struck= |Ship reinstated= |Ship homeport= |Ship motto= |Ship nickname= |Ship honours= |Ship fate=Sold, 7 March 1921 |Ship notes= }} {{Infobox ship characteristics |Hide header= |Header caption= |Ship type= |Ship displacement=*{{convert|662|LT|t|0|abbr=on}} surfaced
|Ship length={{convert|181|ft|m|abbr=on}} |Ship beam={{convert|15|ft|m|abbr=on}} |Ship draft= |Ship power= |Ship propulsion=*2 × {{convert|800|hp|0|abbr=on}} diesels
|Ship speed=*{{convert|15.25|kn|lk=in}} surfaced
|Ship range=*{{convert|3000|nmi|km|abbr=on}} at {{convert|10|kn|abbr=on}}
|Ship endurance= |Ship test depth= |Ship complement= 30 |Ship sensors= |Ship EW= |Ship armament=
|Ship armour= |Ship notes= }} |
HMS E12 was a British E class submarine built by HM Dockyard, Chatham. She was laid down on 16 December 1912 and commissioned on 14 October 1914. Her construction costs totalled £101,900.
During the Great War, anti-submarine nets in the Dardanelles entangled her forward hydroplanes, forcing her down to a depth of 245 feet. At the time, this was the greatest depth achieved by any British submarine.{{citation needed|date=June 2015}} E12 managed to surface only to come under fire by shore batteries, but avoided further damage. She survived the war and was sold for scrap in Malta on 7 March 1921.{{cite book | last = Hutchinson | first = Robert | title = Jane's Submarines: War Beneath the Waves from 1776 to the Present Day | url = https://archive.org/details/janessubmarinesw0000hutc | url-access = registration | year = 2001 | location = London | publisher = HarperCollins | isbn = 978-0-00-710558-8 | oclc = 53783010 }}
Design
Like all post-E8 British E-class submarines, E12 had a displacement of {{convert|662|LT|t}} at the surface and {{convert|807|LT|t}} while submerged. She had a total length of {{convert|180|ft|m}}{{cite book|author1=Innes McCartney|author2=Tony Bryan|title=British Submarines of World War I|url=https://books.google.com/books?id=JWFapIxWZSUC&pg=PA11|date=20 February 2013|publisher=Osprey Publishing|isbn=978-1-4728-0035-0|pages=11–12}} and a beam of {{convert|22|ft|8.5|in}}. She was powered by two {{convert|800|hp}} Vickers eight-cylinder two-stroke diesel engines and two {{convert|420|hp}} electric motors.Akerman, P. (1989). Encyclopaedia of British submarines 1901–1955. p.150. Maritime Books. {{ISBN|1-904381-05-7}}{{cite web|url=http://www.csubmarine.org/html/class/eclass.html|title=E Class|publisher=Chatham Submarines|accessdate=20 August 2015|archive-date=13 August 2015|archive-url=https://web.archive.org/web/20150813023119/http://csubmarine.org/html/class/eclass.html|url-status=dead}} The submarine had a maximum surface speed of {{convert|16|kn|km/h mph}} and a submerged speed of {{convert|10|kn|km/h mph}}. British E-class submarines had fuel capacities of {{convert|50|LT|t}} of diesel and ranges of {{convert|3255|mi|km nmi}} when travelling at {{convert|10|kn|km/h mph}}. E12 was capable of operating submerged for five hours when travelling at {{convert|5|kn|km/h mph}}.
E12 was armed with a single 4-inch QF gun mounted forward of the conning tower, and 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.
E-Class submarines had wireless systems with {{convert|1|kW}} power ratings; in some submarines, these were later upgraded to {{convert|3|kW}} systems by removing a midship torpedo tube. Their maximum design depth was {{convert|100|ft}} although in service some reached depths of below {{convert|200|ft}}. Some submarines contained Fessenden oscillator systems.
Crew
Her complement was three officers and 28 men.
References
{{reflist}}
{{British E class submarine}}
{{DEFAULTSORT:E12}}
Category:British E-class submarines of the Royal Navy
Category:Ships built in Chatham