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British D-class submarine
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British D-class submarine
please note:
- the content below is remote from Wikipedia
- it has been imported raw for GetWiki
{{Short description|Type of British submarines in service before WWI}}{{Use dmy dates|date=March 2017}}{{Use British English|date=March 2017}}{|- the content below is remote from Wikipedia
- it has been imported raw for GetWiki
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Name | D-class
| British C-class submarine>C class | British E-class submarine>E class|Subclasses=|Cost=|Built range=|In service range= |In commission range= |Total ships planned=|Total ships completed=8|Total ships cancelled=|Total ships lost=4|Total ships retired=|Total ships preserved=}}
| 13.6 | m|abbr=on}} (oa) |Ship draught=|Ship draft= | 550 | abbr=on}} electric 1750 hp diesel twin screws | knot (unit)>kn surfaced / 10.0 (design) 9.0 (service) submerged | nautical mile>nmi at 10 kn, surface / 45 nmi at 5 kn, submerged |Ship endurance=|Ship test depth=|Ship complement=25|Ship sensors=|Ship EW= | British 18 inch torpedo>18-inch (45-cm) torpedo tubes (2 forward, one aft, 6 torpedoes)Fitzsimons, Bernard. Illustrated Encyclopedia of 20th Century Weapons and Warfare (London: Phoebus, 1978), Volume 7, p.674, "D.1".
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Design and description
The patrol submarines evolved from the C-class boats. They were designed to be propelled by diesel motors on the surface to avoid the problems with petrol engines experienced with the A class. These boats were designed for foreign service with an endurance of {{convert|2500|nmi|lk=in}} at {{convert|10|kn|lk=in}} on the surface and much improved living conditions for a larger crew.D-class boats were fitted with twin screws for greater manoeuvrability and were fitted with saddle tanks. The D class were the first submarines to be equipped with deck guns forward of the conning tower beginning with D6. Also, reserve buoyancy was increased to 20.6%. Armament also included three {{convert|18|in|mm|adj=on}} torpedo tubes (2 vertically in the bow and 1 in the stern). The D class was also the first class of British submarines to have standard radio fitted. The aerial was attached to the mast of the conning tower that was lowered before diving.With their enlarged bridge structure the boat profile was recognisably that of the modern submarine. The D-class submarines were considered to be so innovative that the prototype, D1, was built in utmost secrecy in a securely guarded building shed. She was launched at Barrow with equal secrecy, with only departmental heads and a few officers from the cruiser {{HMS|Mercury|1878|6}}, that was currently in dock being present. Once moved to the fitting out berth, she was once again screened from view.The boats cost between £79,910 and £89,410 each excluding the deck gun.Operations
The D class were based at Harwich, Immingham, Blyth and Dover. Their wartime role was to sink German warships. In the latter stages of World War I the D class were used for training crews based at Portsmouth.During World War I the boats patrolled the North Sea and the Heligoland Bight, and protected cross channel troopships. During the war, four boats (D2, D3, D5, and D6) were lost, and the remainder (D4, D7, and D8) were paid off in July 1919.Boats
(File:HMS d1 rnsm.jpg|thumb|right|A model of HMS D1)Eight D-class boats were built:- {{HMS|D1}}
- {{HMS|D2}}
- {{HMS|D3}}
- {{HMS|D4}}
- {{HMS|D5}}
- {{HMS|D6}}
- {{HMS|D7}}
- {{HMS|D8}}
See also
- Not to be confused with the United States D-class submarine of 1909-1910.
References
{{Reflist|30em}}Works cited
- BOOK, Akermann, Paul, Encyclopaedia of British Submarines 1901â1955, reprint of the 1989, 2002, Periscope Publishing, Penzance, Cornwall, 1-904381-05-7,
- COLLEDGE2006,
- BOOK, Gardiner, Robert, Gray, Randal, Conway's All the World's Fighting Ships 1906â1921, 1985, Annapolis, Maryland, Naval Institute Press, 0-85177-245-5, amp,
- WEB,weblink The Development of HM Submarines From Holland No. 1 (1901) to Porpoise (1930) (BR3043), Harrison, A. N., January 1979, RN Subs, 27 September 2022,
External links
{{Commons category|British D class submarines}} {{British D class submarine}}{{WWI British ships}}- content above as imported from Wikipedia
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