View source for HMS D2

{{short description|Submarine of the Royal Navy}}

{{Use dmy dates|date=October 2020}}
{|{{Infobox ship begin}}
{{Infobox ship image
|Ship image= D2 submarine.jpg
|Ship caption= HMS D2
}}
{{Infobox ship career
|Hide header=
|Ship country=United Kingdom
|Ship flag={{shipboxflag|United Kingdom|naval}}
|Ship name=HMS ''D2''
|Ship ordered=
|Ship awarded=
|Ship builder=[[Vickers-Armstrongs|Vickers Armstrong]], [[Barrow-in-Furness]]
|Ship laid down=10 July 1909
|Ship launched=25 May 1910
|Ship christened=
|Ship acquired=
|Ship commissioned=29 March 1911
|Ship recommissioned=
|Ship decommissioned=
|Ship in service=
|Ship out of service=
|Ship renamed=
|Ship refit=
|Ship struck=
|Ship fate=Sunk, 25 November 1914
|Ship homeport=
}}
{{Infobox ship characteristics
|Hide header=
|Header caption=
|Ship class=[[British D-class submarine|D-class submarine]]
|Ship displacement=*{{convert|483|LT|t|abbr=on}} (surfaced)
*{{convert|595|LT|t|abbr=on}} (submerged)
|Ship length={{convert|163|ft|m|abbr=on}} ([[Length overall|o/a]])
|Ship beam={{convert|13.6|ft|m|abbr=on}} (o/a)
|Ship draught=
|Ship power=*{{convert|1750|hp|kW|lk=in|abbr=on}} (diesel engines)
*{{convert|550|hp|kW|abbr=on}} (electric motors)
|Ship propulsion=*2 × [[diesel engine]]s
*2 × electric motors
*2 × screws
|Ship speed='''Surfaced:''' {{convert|14|kn|mph km/h|lk=in|abbr=on}}
'''Submerged:''' {{convert|10|kn|mph km/h|abbr=on}} (design); {{convert|9|kn|mph km/h|abbr=on}} (service)
|Ship range=*{{convert|2500|nmi|mi km|lk=in|abbr=on}} at {{convert|10|kn|mph km/h|abbr=on}} (surfaced)
*{{convert|45|nmi|mi km|abbr=on}} at {{convert|5|kn|mph km/h|abbr=on}} (submerged)
|Ship endurance=
|Ship test depth=
|Ship complement=25
|Ship armament=3 × [[British 18-inch torpedo|18 inch (450 mm)]] [[torpedo tube]]s (2 forward, 1 stern)
|Ship notes=
}}
|}

'''HMS ''D2''''' was one of eight [[British D-class submarine|D-class submarine]] built for the [[Royal Navy]] during the first decade of the 20th century.

==Description==
The D-class submarines were designed as improved and enlarged versions of the preceding [[British C-class submarine|C class]], with [[diesel engine]]s replacing the dangerous [[petrol engine]]s used earlier. ''D2'' was slightly smaller than her sister ships and had a length of {{convert|162|ft|1|in|m|1}} [[length overall|overall]], a [[beam (nautical)|beam]] of {{convert|20|ft|6|in|m|1}} and a mean [[draft (ship)|draught]] of {{convert|10|ft|10|in|m|1}}. She [[displacement (ship)|displaced]] {{convert|489|LT|t}} on the surface and {{convert|603|LT|t}} submerged.<ref>Harrison, Chapter 4</ref> The D-class submarines had a crew of 25 officers and [[Naval rating|ratings]] and were the first to adopt [[saddle tank (submarine)|saddle tanks]].<ref name=gg9>Gardiner & Gray, p. 87</ref>

For surface running, the boats were powered by two {{convert|600|bhp|lk=in|0|adj=on}} diesels, each driving one [[propeller shaft]]. When submerged each propeller was driven by a {{convert|275|hp|0|adj=on}} [[electric motor]]. They could reach {{convert|14|kn|lk=in}} on the surface and {{convert|9|kn}} underwater. On the surface, the D class had a range of {{convert|2500|nmi|lk=in}} at {{convert|10|kn}}.<ref name=gg9/>

The boats were armed with three [[British 18-inch torpedo|18-inch (45&nbsp;cm)]] [[torpedo tube]]s, two in the bow and one in the stern. They carried one reload for each tube, a total of six torpedoes.<ref name=gg9/>

==Construction and career==
''D2'' was [[laid down]] by [[Vickers]] on 10 July 1909 at their [[Barrow-in-Furness|Barrow]] shipyard and commissioned on 29 March 1911. During her career, ''D2'' returned from the second [[Heligoland Bight]] patrol along with {{HMS|D3||2}}, {{HMS|E5||2}} and {{HMS|E7||2}}. On 28 August 1914, ''D2'', ''D3'' and {{HMS|D8||2}} fought in the [[Battle of Heligoland Bight (1914)|Battle of Heligoland Bight]]. Then, two days before ''D2'' met her fate, [[Lieutenant commander|Lieutenant Commander]] Jameson was washed overboard off [[Harwich Dockyard|Harwich]]. Lt. Cdr. Head was his replacement. ''D2'' was rammed and sunk by a German patrol boat off [[Borkum]] on 25 November 1914, leaving no survivors.

==Coplestone Memorial Window, Chester==
[[File:Chester Cathedral glass 039.jpg|thumb|''Coplestone Memorial Window'' in Chester Cathedral]]

The ''Coplestone Memorial Window'' in Chester Cathedral is in memory of "F. Lewis Coplestone,  Lt-Commander, Royal Navy, HM Submarine D2" and Commander A.F. Coplesone-Boughey, RN, HMS Defence.<ref>{{Cite web|url=https://www.warmemorialsonline.org.uk/memorial/239055/|title=Copplestone Window - War Memorials Online}}</ref> It depicts St Anselm, Archbishop of Canterbury and shows at the bottom three coats of arms of the Coplestone family, which originated at the [[Copplestone|manor of Copleston]] in Devon.

==Notes==
{{Reflist|30em}}

==References==
* {{cite book|last=Akermann|first=Paul|title=Encyclopaedia of British Submarines 1901–1955|edition=reprint of the 1989|year=2002|publisher=Periscope Publishing|location=Penzance, Cornwall|isbn=1-904381-05-7}}
* {{Cite Colledge2006}}
* {{cite book |editor1-last=Gardiner|editor1-first=Robert|editor2-last=Gray|editor2-first=Randal|title=Conway's All the World's Fighting Ships 1906–1921|year=1985|location=Annapolis, Maryland|publisher=Naval Institute Press|isbn=0-85177-245-5}}
* {{cite web|url=http://rnsubs.co.uk/dits-bits/br-3043.html|title=The Development of HM Submarines From Holland No. 1 (1901) to Porpoise (1930) (BR3043)|last=Harrison|first=A. N.|date=January 1979|publisher=RN Subs|access-date=27 September 2022}}

==External links==
* [http://www.maritimequest.com/warship_directory/great_britain/submarines/pages/d_class/d_2_page_1.htm MaritimeQuest HMS D-2 Pages]
* [http://www.maritimequest.com/warship_directory/great_britain/submarines/pages/d_class/d_2_roll_of_honour.htm HMS D-2 Roll of Honour]
* [http://www.submarine-museum.co.uk/what-we-have/memorial-chapel/submarine-losses?start=3 'Submarine losses 1904 to present day' - Royal Navy Submarine Museum] {{Webarchive|url=https://web.archive.org/web/20150925133842/http://www.submarine-museum.co.uk/what-we-have/memorial-chapel/submarine-losses?start=3 |date=25 September 2015 }}

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{{British D class submarine}}
{{November 1914 shipwrecks}}
{{coord missing|North Sea}}

{{DEFAULTSORT:D02}}
[[Category:British D-class submarines]]
[[Category:Royal Navy ship names]]
[[Category:Ships built in Barrow-in-Furness]]
[[Category:World War I shipwrecks in the North Sea]]
[[Category:Lost submarines of the United Kingdom]]
[[Category:Maritime incidents in November 1914]]
[[Category:1910 ships]]
[[Category:Warships lost in combat with all hands]]