View source for HMS C12

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

{{Use dmy dates|date=January 2018}}
{{Use British English|date=January 2018}}
{|{{Infobox ship begin}}
{{Infobox ship image
|Ship image=[[File:HMS C38.jpg|300px|HMS C38]]
|Ship caption=HMS ''C38'' - a typical C class submarine
}}
{{Infobox ship career
|Hide header=
|Ship country=United Kingdom
|Ship flag={{shipboxflag|United Kingdom|naval}}
|Ship name=HMS ''C12''
|Ship ordered= 
|Ship awarded=
|Ship builder=[[Vickers]], [[Barrow-in-Furness|Barrow]]
|Ship laid down= 27 November 1906
|Ship launched= 9 September 1907
|Ship christened=
|Ship acquired=
|Ship commissioned= 19 January 1908
|Ship recommissioned=
|Ship decommissioned=
|Ship in service=
|Ship out of service=
|Ship renamed=
|Ship reclassified=
|Ship refit=
|Ship captured=
|Ship struck=
|Ship reinstated=
|Ship fate=Sold for Scrap 2 February 1920
|Ship homeport=
}}
{{Infobox ship characteristics
|Hide header=
|Header caption= 
|Ship class=[[British C-class submarine|C-class submarine]]
|Ship displacement=*{{convert|287|LT|t|abbr=on}} surfaced
*{{convert|316|LT|t|abbr=on}} submerged
|Ship length={{convert|142|ft|3|in|m|1|abbr=on}}
|Ship beam={{convert|13|ft|7|in|m|1|abbr=on}}
|Ship draught={{convert|11|ft|6|in|1|abbr=on}}
|Ship power=*{{convert|600|bhp|kW|lk=in|abbr=on}} [[petrol]]
*{{convert|300|hp|kW|abbr=on}} electric
|Ship propulsion=*1 × 16-cylinder Vickers petrol engine
*1 × [[electric motor]]
|Ship speed=*{{convert|12|kn|abbr=on|lk=in}} surfaced
*{{convert|7|kn|abbr=on}} submerged
|Ship range={{convert|910|nmi|abbr=on|lk=in}} at {{convert|12|kn|abbr=on}} on the surface
|Ship test depth={{convert|100|ft|1}}
|Ship complement=2 officers and 14 ratings
|Ship armament=2 × [[British 18 inch torpedo|18&nbsp;in (450&nbsp;mm)]] bow [[torpedo tube]]s
|Ship notes=
}}
|}
'''HMS ''C12''''' was one of 38 [[British C-class submarine|C-class submarine]]s built for the [[Royal Navy]] in the first decade of the 20th century. The boat survived the [[First World War]] and was sold for [[ship breaking|scrap]] in 1920.

==Design and description==
The C class was essentially a repeat of the preceding [[British B-class submarine|B class]], albeit with better performance underwater. The submarine had a length of {{convert|142|ft|3|in|m|1}} [[length overall|overall]], a [[beam (nautical)|beam]] of {{convert|13|ft|7|in|m|1}} and a mean [[draft (ship)|draft]] of {{convert|11|ft|6|in|m|1}}. They [[displacement (ship)|displaced]] {{convert|287|LT|t}} on the surface and {{convert|316|LT|t}} submerged. The C-class submarines had a crew of two officers and fourteen [[naval rating|ratings]].<ref name=gg9>Gardiner & Gray, p. 87</ref>

For surface running, the boats were powered by a single 16-cylinder {{convert|600|bhp|lk=in|0|adj=on}} [[Vickers]] [[petrol engine]] that drove one [[propeller shaft]]. When submerged the propeller was driven by a {{convert|300|hp|0|adj=on}} [[electric motor]].<ref name=gg9/> They could reach {{convert|12|kn|lk=in}} on the surface and {{convert|7|kn}} underwater. On the surface, the C class had a range of {{convert|910|nmi|lk=in}} at {{convert|12|kn}}.<ref>Harrison, Chapter 3</ref>

The boats were armed with two [[British 18 inch torpedo|18-inch (45&nbsp;cm)]] [[torpedo tube]]s in the bow. They could carry a pair of reload torpedoes, but generally did not as they would have to remove an equal weight of fuel in compensation.<ref>Harrison, Chapter 27</ref>

==Construction and career==
''C12'' was built by [[Vickers]] at their [[Barrow-in-Furness]] [[shipyard]], [[laid down]] on 27 November 1906 and was commissioned on 19 January 1908. The boat was sunk in a collision with a [[destroyer]] in the [[Humber Estuary]] on 6 October 1918. She was salvaged and recommissioned. ''C12'' was sold for scrap on 2 February 1920.

==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|name-list-style=amp}}
* {{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/daily_event_archive/2006/oct/06_hms_c12.htm MaritimeQuest HMS ''C12'' page]

{{British C class submarine}}
{{October 1918 shipwrecks}}

{{DEFAULTSORT:C12}}
[[Category:British C-class submarines]]
[[Category:Ships built in Barrow-in-Furness]]
[[Category:Royal Navy ship names]]
[[Category:British submarine accidents]]
[[Category:Submarines sunk in collisions]]
[[Category:Maritime incidents in 1918]]
[[Category:1907 ships]]