HMS M18

History
United Kingdom
Name:	M18
Builder:	William Gray, Hartlepool
Laid down:	1 March 1915
Launched:	15 May 1915
Fate:	Sold, 29 January 1920
General characteristics (as built)
Class and type:	M15 class monitor
Displacement:	540 long tons (550 t)
Length:	177 ft 3 in (54.03 m)
Beam:	31 ft (9.4 m)
Draught:	6 ft 9 in (2.06 m)
Installed power:	640 bhp (480 kW)
Propulsion:	4 shaft; Bolinder semi-diesel;
Speed:	11 knots (20 km/h; 13 mph)
Complement:	69
Armament:	1 × 9.2 in (230 mm) gun; 1 × 12 pdr (3 in(76 mm)) gun; 1 × 6 pdr (57 mm) AA gun;

HMS M18 was a M15-class monitor built for the Royal Navy during the First World War.

Design

Intended as a shore bombardment vessel, M18's primary armament was a single 9.2 inch Mk X gun which had been held as a spare for the Drake-class cruiser and Cressy-class cruiser.[1] In addition to her 9.2-inch gun, she also possessed one 12 pounder and one 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 M18 ordered in March, 1915, as part of the War Emergency Programme of ship construction. She was laid down at the William Gray shipyard at Hartlepool in March 1915, launched on 15 May 1915, and completed in July 1915.

World War 1

M18 served in the Mediterranean from October 1915 to October 1918, and in the Baltic April to June 1919.

Disposal

M18 was sold on 29 January 1920 for mercantile service as an oil tanker and renamed 'Anam'.

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References

Randal Gray (ed). Conway's All the World's Fighting Ships, 1906–1921. Conway Maritime Press. p. 48. ISBN 0-85177-245-5.CS1 maint: extra text: authors list (link)

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.
Dittmar, F. J. & Colledge, J. J., "British Warships 1914–1919", (Ian Allan, London, 1972), ISBN 0-7110-0380-7

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[1] Randal Gray (ed). Conway's All the World's Fighting Ships, 1906–1921. Conway Maritime Press. p. 48. ISBN 0-85177-245-5.CS1 maint: extra text: authors list (link)