Yarrow Later M-class destroyer

A painting of the sinking of HMS Ulleswater by Charles Pears
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	9 ft 1 in (2.77 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

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 sometimes described as the Yarrow R class of destroyers, although they lacked the geared steam turbines of their sisters. The design was 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 armed with three single QF 4-inch (102 mm) guns and four torpedo tubes for 21 in (533 mm) torpedoes. Three of the class were sunk during the war in enemy action, two by German U-boats and one by the German light cruisers Bremse and Brummer. Of the four that survived, two were sold to be broken up on the same day in 1926, one the following year and the last in 1939.