View source for HMS M20

{{about|the British monitor|the Swedish minesweeper|HSwMS M20}}
{{Use dmy dates|date=December 2016}}
{{Use British English|date=December 2016}}
{|{{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=HMS ''M20''
|Ship namesake=
|Ship ordered=
|Ship builder=Sir Raylton Dixon & Co.
|Ship laid down=1 March 1915
|Ship launched=11 May 1915 
|Ship acquired=
|Ship commissioned=
|Ship decommissioned=
|Ship in service=
|Ship out of service=
|Ship struck=
|Ship reinstated=
|Ship honours=
|Ship fate=Sold 29 January 1920
|Ship notes=
}}
{{Infobox ship characteristics
|Hide header=
|Header caption= 
|Ship class=[[M15 class monitor|''M15'' class]] [[monitor (warship)|monitor]]
|Ship tonnage=
|Ship displacement=540 tons
|Ship length={{convert|177|ft|3|in|m|abbr=on}} 
|Ship beam={{convert|31|ft|m|abbr=on}} 
|Ship height=
|Ship draught={{convert|6|ft|9|in|m|abbr=on}} 
|Ship depth=
|Ship power=
|Ship propulsion=*4-shaft
*Bolinder 4-cylinder semi-diesel
*640 hp
|Ship sail plan=
|Ship speed=11 [[Knot (unit)|knots]]
|Ship range=
|Ship endurance=
|Ship boats=
|Ship capacity=
|Ship troops=
|Ship complement=69
|Ship crew=
|Ship time to activate=
|Ship sensors=
|Ship EW=
|Ship armament=
*''As built''
*1 × [[BL 9.2 inch gun Mk III - VII|BL 9.2-inch Mk VI gun]]
*1 × [[QF 12 pounder 12 cwt naval gun|12-pdr (76&nbsp;mm) QF Mk 1 gun]]
*1 × [[QF 6 pounder Hotchkiss|6-pdr (57&nbsp;mm) QF MK 1 AA gun]]
*''1918''
*1 × [[BL 9.2 inch gun Mk III - VII|BL 9.2-inch Mk VI gun]]
*1 × [[QF 3 inch 20 cwt|QF {{convert|3|in|mm|adj=on|sigfig=4}} AA gun]]
*1 × [[QF 6 pounder Hotchkiss|6-pdr (57&nbsp;mm) QF MK 1 AA gun]]
|Ship armour=
|Ship notes=
}}
|}
'''HMS ''M20'' ''' was a [[World War I|First World War]] [[Royal Navy]] [[M15 class monitor|''M15''-class]] [[Monitor (ship)|monitor]].

==Design==

Intended as a shore bombardment vessel, ''M20''{{'}}s primary armament was a single [[BL 9.2 inch gun Mk I - VII|9.2 inch Mk VI gun]] removed from the {{sclass|Edgar|cruiser}} [[HMS Gibraltar (1892)|HMS ''Gibraltar'']].<ref>{{cite book | title = Conway's All the World's Fighting Ships 1906–1921 | editor = Randal Gray  | year = 1985 | isbn = 0-85177-245-5 | publisher= Conway Maritime Press | page = 48}}</ref> In addition to her 9.2-inch gun she also possessed one [[QF 12 pounder 12 cwt naval gun|12 pounder]] and one [[QF 6 pounder Hotchkiss|six-pound anti-aircraft gun]]. She was equipped with a four-shaft Bolinder two-cylinder semi-diesel engine with 640 horsepower that allowed a top speed of eleven knots. The monitor's crew consisted of sixty-nine officers and men.

==Construction==
HMS ''M20'' ordered in March, 1915, as part of the [[War Emergency Programme destroyers|War Emergency Programme]] of ship construction. She was laid down at the [[Sir Raylton Dixon|Sir Raylton Dixon & Co.]] Ltd shipyard at [[Govan]] in March 1915, launched on 11 May 1915, and completed in July 1915.

==World War 1==
''M20'' served within the [[Mediterranean]] from August 1915 to December 1918. She did not return to Home Waters, paying off at [[Malta]].

==Disposal==
''M20'' was sold on 29 January 1920 for mercantile service as an oil tanker and renamed 'Lima'.

==Citations==
{{Reflist}}

==References==
* {{Cite Colledge2006}}
* Dittmar, F. J. & Colledge, J. J., "British Warships 1914–1919", (Ian Allan, London, 1972), {{ISBN|0-7110-0380-7}}

 <!-- non-breaking space to keep AWB drones from altering the space before the navbox -->
{{M15 class monitors}}
{{clear}}

{{DEFAULTSORT:M20}}
[[Category:M15-class monitors]]
[[Category:1915 ships]]
[[Category:World War I monitors of the United Kingdom]]
[[Category:Royal Navy ship names]]


{{UK-mil-ship-stub}}