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{{short description|Submarine of the Royal Navy}}
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'''HMS ''R12''''' was a [[British R class submarine]] built by [[Cammell Laird]] at [[Birkenhead]]. She was laid down on the [[1 December]] [[1917]] and launched [[9 April]] [[1918]]. R12 was commissioned on [[29 October]] [[1919]]. She came too late to see any combat in [[World War I]] like most of the other R class submarines. R12 was paid off in December 1919 and sold on [[21 February]] [[1923]] to J Smith.

{{Use dmy dates|date=July 2017}}
{{Use British English|date=July 2017}}
{|{{Infobox ship begin}}
{{Infobox ship image
|Ship image=[[File:R class submarine.svg|300px|R-class submarine]]
|Ship caption=R-class submarine
}}
{{Infobox ship career
|Hide header=
|Ship country=United Kingdom
|Ship flag= {{shipboxflag|United Kingdom|naval}}
|Ship name=HMS ''R12''
|Ship ordered=
|Ship awarded=
|Ship builder=[[Cammell Laird]], [[Birkenhead]]
|Ship original cost=
|Ship yard number=
|Ship way number=
|Ship laid down=1 December 1917
|Ship launched=9 April 1918
|Ship sponsor=
|Ship christened=
|Ship completed=
|Ship acquired=
|Ship commissioned=29 October 1919
|Ship decommissioned=December 1919
|Ship in service=
|Ship out of service=
|Ship renamed=
|Ship reclassified=
|Ship refit=
|Ship struck=
|Ship reinstated=
|Ship homeport=
|Ship identification=
|Ship motto=
|Ship nickname=
|Ship honours=
|Ship captured=
|Ship fate= Sold, 21 February 1923
|Ship notes=
|Ship badge=
}}
{{Infobox ship characteristics
|Hide header=
|Header caption=
|Ship class=[[British R-class submarine|R-class submarine]]
|Ship tonnage=
|Ship displacement=*{{convert|410|LT|t|0}} surfaced
*{{convert|503|LT|t|0}} submerged
|Ship length={{convert|163|ft|9|in|m|abbr=on}}
|Ship beam={{convert|15|ft|3|in|m|abbr=on}}
|Ship draught={{convert|11|ft|6|in|m|abbr=on}}
|Ship power=*{{convert|240|bhp|kW|lk=in|abbr=on}} (diesel)
*{{convert|1200|hp|kW|abbr=on}} (electric)
|Ship propulsion=*1 × [[diesel engine]]
*1 × [[electric motor]]
|Ship speed=*{{convert|9.5|kn|lk=in}} surfaced
*{{convert|15|kn}} submerged
|Ship range={{convert|2400|nmi|abbr=on|lk=in}} at {{convert|9|kn|}} surfaced; {{convert|60|nmi|abbr=on}} at {{convert|5|kn|}} submerged
|Ship test depth={{convert|150|ft|1}}
|Ship complement=2 officers and 20 [[naval rating|rating]]s
|Ship sensors=Bow [[hydrophone]] array
|Ship armament=6 × bow [[British 18 inch torpedo|18-inch (45 cm)]] [[torpedo tube]]s
|Ship notes=
}}
|}
'''HMS ''R12''''' was one of 10 [[British R-class submarine|R-class submarines]] built for the [[Royal Navy]] during the First World War. The boat was not completed before the end of the war and was sold for [[ship breaking|scrap]] in 1923.

==Design and description==
The R-class submarine was designed to meet an [[British Admiralty|Admiralty]] requirement for a specialised [[hunter-killer submarine]] with an emphasis on submerged performance. The boats had a length of {{convert|163|ft|9|in|m|1}} [[length overall|overall]], a [[beam (nautical)|beam]] of {{convert|15|ft|3|in|m|1}} and a mean [[draft (ship)|draft]] of {{convert|11|ft|6|in|m|1}}. They [[displacement (ship)|displaced]] {{convert|410|LT|t}} on the surface and {{convert|503|LT|t}} submerged. The R-class submarines had a crew of 2 officers and 20 [[naval rating|ratings]].<ref name=gg9>Gardiner & Gray, p. 93</ref> They had a diving depth of {{convert|150|ft|1}}.<ref>Harrison, Chapter 19</ref>

For surface running, the boats were powered by a single eight-cylinder <ref>Harrison, Chapter 25</ref> {{convert|240|bhp|lk=in|0|adj=on}} [[diesel engine]] that drove the single [[propeller shaft]]. When submerged it was driven by a {{convert|1200|hp|0|adj=on}} [[electric motor]]. They could reach {{convert|9.5|kn|lk=in}} on the surface and {{convert|15|kn}} underwater. On the surface, the R class had a range of {{convert|2400|nmi|lk=in}} at {{convert|9|kn|}} and {{convert|60|nmi|abbr=on|lk=in}} at {{convert|5|kn|}} submerged.<ref name=h0>Harrison, Chapter 10</ref>

The boats were armed with six [[British 18 inch torpedo|18-inch (45&nbsp;cm)]] [[torpedo tube]]s in the bow. They carried six reload torpedoes for a grand total of a dozen torpedoes. They were equipped with an array of five [[hydrophone]]s in the bow to allow them to locate and engage targets while submerged.<ref name=h0/>

==Construction and career==
⚫
HMS ''R12'' was laid down on 1 December 1917 by [[Cammell Laird]] at [[Birkenhead]], [[Ship naming and launching|launched]] on 9 April 1918 and commissioned on 29 October 1919. She came too late to see any combat in [[World War I]], like most of the other R class submarines. ''R12'' was paid off in December 1919, and sold on 21 February 1923 to J. Smith.

==Notes==
{{reflist|30em}}


==References==
==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}}
*''Submarines, war beneath the waves, from 1776 to the present day''. By Robert Hutchinson.
*{{Colledge}}
* {{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}}

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{{British R-class submarine}}


{{DEFAULTSORT:R12}}
{{DEFAULTSORT:R12}}
[[Category:British R class submarines]]
[[Category:British R-class submarines]]
[[Category:Royal Navy ship names]]
[[Category:Royal Navy ship names]]
[[Category:1918 ships]]

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{{UK-mil-submarine-stub}}

Latest revision as of 23:15, 14 November 2024

R-class submarine
R-class submarine
History
United Kingdom
NameHMS R12
BuilderCammell Laird, Birkenhead
Laid down1 December 1917
Launched9 April 1918
Commissioned29 October 1919
DecommissionedDecember 1919
FateSold, 21 February 1923
General characteristics
Class and typeR-class submarine
Displacement
  • 410 long tons (417 t) surfaced
  • 503 long tons (511 t) submerged
Length163 ft 9 in (49.91 m)
Beam15 ft 3 in (4.65 m)
Draught11 ft 6 in (3.51 m)
Installed power
  • 240 bhp (180 kW) (diesel)
  • 1,200 hp (890 kW) (electric)
Propulsion
Speed
  • 9.5 knots (17.6 km/h; 10.9 mph) surfaced
  • 15 knots (28 km/h; 17 mph) submerged
Range2,400 nmi (4,400 km; 2,800 mi) at 9 knots (17 km/h; 10 mph) surfaced; 60 nmi (110 km; 69 mi) at 5 knots (9.3 km/h; 5.8 mph) submerged
Test depth150 feet (45.7 m)
Complement2 officers and 20 ratings
Sensors and
processing systems		Bow hydrophone array
Armament6 × bow 18-inch (45 cm) torpedo tubes

HMS R12 was one of 10 R-class submarines built for the Royal Navy during the First World War. The boat was not completed before the end of the war and was sold for scrap in 1923.

Design and description

[edit]

The R-class submarine was designed to meet an Admiralty requirement for a specialised hunter-killer submarine with an emphasis on submerged performance. The boats had a length of 163 feet 9 inches (49.9 m) overall, a beam of 15 feet 3 inches (4.6 m) and a mean draft of 11 feet 6 inches (3.5 m). They displaced 410 long tons (420 t) on the surface and 503 long tons (511 t) submerged. The R-class submarines had a crew of 2 officers and 20 ratings.[1] They had a diving depth of 150 feet (45.7 m).[2]

For surface running, the boats were powered by a single eight-cylinder [3] 240-brake-horsepower (179 kW) diesel engine that drove the single propeller shaft. When submerged it was driven by a 1,200-horsepower (895 kW) electric motor. They could reach 9.5 knots (17.6 km/h; 10.9 mph) on the surface and 15 knots (28 km/h; 17 mph) underwater. On the surface, the R class had a range of 2,400 nautical miles (4,400 km; 2,800 mi) at 9 knots (17 km/h; 10 mph) and 60 nmi (110 km; 69 mi) at 5 knots (9.3 km/h; 5.8 mph) submerged.[4]

The boats were armed with six 18-inch (45 cm) torpedo tubes in the bow. They carried six reload torpedoes for a grand total of a dozen torpedoes. They were equipped with an array of five hydrophones in the bow to allow them to locate and engage targets while submerged.[4]

Construction and career

[edit]

HMS R12 was laid down on 1 December 1917 by Cammell Laird at Birkenhead, launched on 9 April 1918 and commissioned on 29 October 1919. She came too late to see any combat in World War I, like most of the other R class submarines. R12 was paid off in December 1919, and sold on 21 February 1923 to J. Smith.

Notes

[edit]
  1. ^ Gardiner & Gray, p. 93
  2. ^ Harrison, Chapter 19
  3. ^ Harrison, Chapter 25
  4. ^ a b Harrison, Chapter 10

References

[edit]
  • Akermann, Paul (2002). Encyclopaedia of British Submarines 1901–1955 (reprint of the 1989 ed.). Penzance, Cornwall: Periscope Publishing. ISBN 1-904381-05-7.
  • Colledge, J. J.; Warlow, Ben (2006) [1969]. Ships of the Royal Navy: The Complete Record of all Fighting Ships of the Royal Navy (Rev. ed.). London: Chatham Publishing. ISBN 978-1-86176-281-8.
  • Gardiner, Robert & Gray, Randal, eds. (1985). Conway's All the World's Fighting Ships 1906–1921. Annapolis, Maryland: Naval Institute Press. ISBN 0-85177-245-5.
  • Harrison, A. N. (January 1979). "The Development of HM Submarines From Holland No. 1 (1901) to Porpoise (1930) (BR3043)". RN Subs. Retrieved 27 September 2022.
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