Q and R-class destroyer

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HNLMS Banckert on 20 September 1948
Class overview
Operators	Royal Navy  Royal Australian Navy  Royal Netherlands Navy  Indian Navy
Preceded by	O and P class
Succeeded by	S and T class
Subclasses	Q, R
Completed	16
Lost	2 (+1 expended)
Retired	13
General characteristics Q class[1]
Type	Destroyer
Displacement	1,692 long tons (1,719 t) 2,411 long tons (2,450 t) full load
Length	358.25 ft (109.2 m) o/a
Beam	35.75 ft (10.9 m)
Draught	9.5 ft (2.9 m)
Propulsion	2 × Admiralty three-drum boilers, Parsons geared steam turbines, 40,000 shp (30,000 kW) on 2 shafts
Speed	36 kn (67 km/h)
Range	4,675 nmi (8,658 km) at 20 knots (37 km/h)
Complement	176 (225 as flotilla leader)
Sensors and processing systems	Radar Type 290 air warning Radar Type 285 ranging & bearing
Armament	4 × QF 4.7 in (120 mm) Mk.IX guns, single mounts CP Mk.XVIII 4 × QF 2 pdr Mk.VIII (40 mm L/39), quad mount Mk.VII 6 × QF 20 mm Oerlikon, single mount P Mk.III 8 (2×4) tubes for 21 in (533 mm) torpedoes Mk.IX up to 3 × throwers & 3 × racks, to 45 depth charges
General characteristics (R class)
Displacement	1,705 long tons (1,732 t) 2,425 long tons (2,464 t) full load
Complement	176 (237 in leader)
Armament	4 × throwers & 2 × racks, 70 depth charges
Notes	Other characteristics as per Q class

The Q and R class was a class of sixteen War Emergency Programme destroyers ordered for the British Royal Navy in 1940 as the 3rd and 4th Emergency Flotilla. They served as convoy escorts during World War II. Three Q-class ships were transferred to the Royal Australian Navy upon completion, with two further ships being handed over in 1945. Roebuck had the dubious honour of being launched prematurely by an air raid at Scotts shipyard in Greenock, her partially complete hulk lying submerged in the dockyard for nine months before it was salvaged and completed.^[1]