Salisbury-class frigate

	HMS Lincoln, 1972
Class overview
Name	Salisbury class
Operators	Royal Navy; Bangladesh Navy;
Succeeded by	Leander class
Built	1952–1959
In commission	1957–1985 (British service); 1978–2016 (Bangladesh service);
Planned	7
Completed	4
Cancelled	3
Retired	4
General characteristics
Type	Frigate
Displacement	2,170 tons standard; 2,400 tons full load;
Length	340 ft (100 m) o/a
Beam	40 ft (12 m)
Draught	15 ft 6 in (4.72 m)
Propulsion	8 × Admiralty Standard Range ASR1 diesels, 14,400 shp (10,738 kW), 2 shafts; 220 tons fuel oil;
Speed	24 kn (44 km/h)
Range	7,500 nmi (13,900 km) at 16 kn (30 km/h)
Complement	235
Sensors and ; processing systems	Type 960 air search radar, later Type 965 AKE-2; Type 293Q target indication radar, later Type 993n; Type 982 aircraft direction radar, later Type 986; Type 277Q height finding radar, later Type 278; Type 974 navigation radar, later Type 978; Type 275 fire control radar on director Mark 6M; Type 262 fire control on STAAG mount; Type 1010 Cossor Mark 10 IFF; Type 174 search sonar; Type 170 attack sonar;
Armament	1 × twin 4.5-inch (113 mm) gun Mark 6; 1 × twin 40 mm Bofors gun STAAG Mark 2, later;; 1 × twin 40 mm Bofors gun Mk.5; Llandaff & Chichester; 1 × Sea Cat GWS-20 SAM; Lincoln & Salisbury; 1 × Squid A/S mortar;

The Type 61 Salisbury class was a class of the Royal Navy aircraft direction (AD) frigate, built in the 1950s. The purpose of the aircraft direction ships was to provide radar picket duties at some distance from a carrier task force and offer interception guidance to aircraft operating in their area.

The class was part of a multi-purpose frigate concept that also included the Type 41 Leopard-class anti-aircraft ships and the cancelled Type 11 anti-submarine variant. Together, they were the first ships in the Royal Navy to use diesel propulsion. Improvements in conventional steam turbine power erased the range advantage of the diesel and led to future purchases of Type 61 and 41 being cancelled or converted to the new Type 12 frigate.

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