General Purpose Frigate (Canada)

Class overview
Name	General Purpose Frigate
Operators	Royal Canadian Navy
Preceded by	Prestonian class
Succeeded by	Halifax class
Planned	8
Cancelled	8
General characteristics
Type	Frigate
Displacement	3,551 t (3,495 long tons) normal 4,700 t (4,600 long tons) deep load
Length	~423 ft (128.9 m) oa
Beam	~50 ft (15.2 m)
Draught	~14 ft 6 in (4.4 m)
Propulsion	2 shaft geared steam turbines, 36,000 shp (27,000 kW)
Speed	30 knots (56 km/h; 35 mph)
Armament	1 × twin 5 in (127 mm)/54 calibre Mk 42 gun 1 × RIM-24 Tartar surface-to-air missile system ASW torpedo tubes

The General Purpose Frigate, or GPF, was a procurement project for the Royal Canadian Navy during the Cold War. The class was also known as the Tribal-class frigate.^[1] Intended as a replacement for the Second World War-era destroyers in service at the time, the frigate design was developed for the Progressive Conservative Diefenbaker government in the late 1950s as part of the general fleet renewal program. The GPF program was cancelled under the Liberal Pearson government as part of their plan to reshape the Canadian Armed Forces.^[2] Following the cancellation, a modified version of the design was used for the Iroquois-class destroyers.^[1]