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History
HMS Undaunted on the River Mersey, 28 February 1944
United Kingdom
Name	HMS Undaunted
Builder	Cammell Laird
Laid down	8 September 1942
Launched	19 July 1943
Commissioned	3 March 1944
Decommissioned	1974
Identification	Pennant number R53
Fate	Sunk as target November 1978
General characteristics V-class destroyer
Class and type	V-class destroyer
Displacement	1,777 long tons (1,806 t) standard 2,058 long tons (2,091 t) full load
Length	363 ft (111 m)
Beam	35 ft 8 in (10.87 m)
Draught	10 ft (3.0 m)
Propulsion	2 × Admiralty 3-drum water-tube boilers Geared steam turbines, 40,000 shp (29,828 kW) 2 shafts
Speed	37 knots (43 mph; 69 km/h)
Range	4,860 nmi (9,000 km) at 29 kn (54 km/h)
Complement	180 (225 in flotilla leader)
Armament	Original configuration : 4 × QF 4.7-inch (120-mm) Mk XII guns in single mountings CP Mk.XXII 2 × QF 40 mm Bofors guns in twin mount Mk.IV 6 × QF 20 mm Oerlikon guns; 2 × twin mounts Mk.V, 2 × single mounts Mk.III 2 × quadruple tubes for 21 in (533 mm) torpedo Mk.IX
General characteristics Type 15 frigate
Class and type	Type 15 frigate
Displacement	2,300 long tons (2,337 t) standard
Length	358 ft (109 m) o/a
Beam	37 ft 9 in (11.51 m)
Draught	14 ft 6 in (4.42 m)
Propulsion	2 × Admiralty 3-drum boilers, steam turbines on 2 shafts, 40,000 shp
Speed	31 knots (36 mph; 57 km/h) (full load)
Complement	174
Sensors and processing systems	Radar Type 293Q target indication (later Type 993) Type 277Q surface search Type 974 navigation Type 262 fire control on director CRBF Type 1010 Cossor Mark 10 IFF Sonar: Type 174 search Type 162 target classification Type 170 attack
Armament	1 × twin 4 in gun Mark 19 1 × twin 40mm Bofors Mk.5; 2 × Squid A/S mortar or; 2 × Limbo Mark 10 A/S mortar

HMS Undaunted was a U-class destroyer of the British Royal Navy that saw service during World War II. She was later converted into a Type 15 fast anti-submarine frigate, with the new pennant number F53.