Leopard-class frigate

*Leopard* class
	HMS Jaguar
Class overview
Name	Leopard class or Type 41
Operators	Royal Navy; Indian Navy; Bangladesh Navy;
Built	1953–1960
In commission	1957–1982 (British service); 1958–1992 (Indian service); 1978–2013 (Bangladesh service);
Planned	5 British & 3 Indian
Completed	4 British & 3 Indian
Cancelled	1 British
Retired	7
General characteristics
Type	Air-defence frigate
Displacement	2,300 long tons (2,337 t) standard; 2,520 long tons (2,560 t) full load;
Length	340 ft (100 m) o/a
Beam	40 ft (12 m)
Draught	16 ft (4.9 m)
Propulsion	8 × Admiralty Standard Range ASR1 diesels, 14,400 shp (10,738 kW), 2 shafts; 220 tons oil fuel;
Speed	24 knots (28 mph; 44 km/h)
Range	7,500 nmi (13,900 km) at 16 kn (30 km/h)
Complement	205 or 235
Sensors and ; processing systems	Type 960 air search radar, later;; Type 965 AKE-1 air search radar; Type 293Q target indication radar, later;; Type 993 target indication radar; Type 277Q height finding radar; Type 974 navigation radar; Type 275 fire control radar on director Mark 6M; Type 262 fire control radar on director CRBF; Type 262 fire control radar on STAAG mount; Type 1010 Cossor Mark 10 IFF; Type 174 search sonar; Type 164 attack sonar;
Armament	2 × twin 4.5 in guns Mark 6; 1 × twin 40 mm Bofors gun STAAG Mark 2, later;; 1 × single 40 mm Bofors gun Mark 9; 1 × Squid A/S mortar;

The Type 41 or Leopard class were a class of anti-aircraft defence frigates built for the Royal Navy (4 ships) and Indian Navy (3 ships) in the 1950s. The Type 41, together with the Type 61 variant introduced diesel propulsion into the Royal Navy, the perceived benefits being long range, low fuel use, reduced crew (especially skilled artificers), and reduced complexity.

Although successful, improvements in traditional steam turbine technology erased the fuel economy advantage of the diesel powerplants and led to production being curtailed in favour of the Type 12 frigate, which was similar in overall design.

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