The Yarrow Later M class were a class of seven destroyers built for the Royal Navy that saw service during World War I. They were based on the preceding and successful Yarrow M class with minor alterations; notably reduced beam to compensate for increased displacement and a sloping stern. They were sometimes described as the Yarrow R class of destroyers.

This article includes a list of references, related reading or external links, but its sources remain unclear because it lacks inline citations. (January 2013)

Class overview
Operators	Royal Navy
Preceded by	Yarrow M class
Built	1915–1917
In commission	1916–1938
Completed	7
Lost	3
General characteristics
Type	Destroyer
Displacement	897 long tons (911 t) light 930 long tons (945 t) normal
Length	273 ft 6 in (83.36 m)
Beam	25 ft 7.5 in (7.81 m)
Draught	10 ft 6 in (3.20 m)
Propulsion	3 × Yarrow-type boilers Parsons direct-drive steam turbines 27,000 hp (20,134 kW) 2 shafts 200–256 tons oil
Speed	36 knots (41 mph; 67 km/h)
Complement	82
Armament	3 × QF 4-inch (101.6 mm) Mark IV guns, mounting P Mk.IX 1 × single QF 2 pdr "pom-pom" Mk.II 2 × twin 21 in (533 mm) torpedo tubes

Ships

Four vessels were ordered in July 1915:

• Sabrina – Laid down August 1915, launched 24 July 1916, completed September 1916. Sold for breaking up 5 November 1926.
• Strongbow – Launched 30 September 1916 and completed late 1916. Sunk by gunfire from German cruisers Bremse and Brummer off Norway, 17 October 1917.
• Surprise – Launched 25 November 1916 and completed 1916, torpedoed and sunk by German U-boat off Maas light ship on night of 22 December/23 December 1917.
• Sybille – Laid down August 1915, launched 5 February 1917, completed February 1917. Sold for breaking up 5 November 1926.

Three vessels were ordered in March 1916:

• Truculent – Laid down March 1916, launched 24 March 1917, completed May 1917. Sold for breaking up 29 April 1927.
• Tyrant – Laid down March 1916, launched 19 May 1917, completed July 1917. Sold for breaking up April 1938.
• Ulleswater – Launched 4 August 1917 and completed 1917, torpedoed and sunk by German U-boat UC-17 off Dutch coast 15 August 1918.

Bibliography

• Destroyers of the Royal Navy, 1893–1981, Maurice Cocker, 1983, Ian Allan ISBN 0-7110-1075-7
• Jane's Fighting Ships, 1919, Jane's Publishing