Mackenzie-class destroyer

HMCS Mackenzie off San Diego, in 1992
Class overview
Name	Mackenzie class
Builders	Canadian Vickers Ltd., Montreal Victoria Machinery Depot Ltd., Victoria Burrard Dry Dock Ltd., North Vancouver Davie Shipbuilding Ltd., Lauzon
Operators	Royal Canadian Navy  Canadian Forces
Preceded by	Restigouche class
Succeeded by	Annapolis class
Built	1958–1962
In service	1962–1992
Planned	6
Completed	4
Cancelled	2
Retired	4
General characteristics
Type	Destroyer escort
Displacement	2,380 t (2,380.0 t) full load
Length	371 ft (113.1 m) wide load 366 ft (111.6 m) oa
Beam	42 ft (12.8 m)
Draught	13 ft 6 in (4.1 m)
Installed power	2 × Babcock & Wilcox boilers 30,000 shp (22,000 kW)
Propulsion	2 shafts 2 × English-Electric geared steam turbines
Speed	28 kn (51.9 km/h; 32.2 mph)
Complement	228 regular, 170–210 training
Sensors and processing systems	1 × SPS-12 air search radar 1 × SPS-10B surface search radar 1 × Sperry Mk.2 navigation radar 1 × SQS-501 high frequency bottom profiler sonar 1 × SQS-502 high frequency mortar control sonar 1 × SQS-503 hull mounted active search sonar 1 × SQS-11 hull mounted active search sonar
Electronic warfare & decoys	1 × DAU (replaced by SRD 501) high frequency direction finder 1 × WLR 1C radar analyzer 1 × UPD 501 radar detector
Armament	1 × 3-inch/70 Mk.6 Vickers twin mount forward (Qu'Appelle had 3-inch/50 twin) 1 × 3-inch/50 Mk.33 FMC twin mount aft 2 × Mk NC 10 Limbo ASW mortars 2 × single Mk.2 "K-gun" launchers with homing torpedoes 1 × 103 mm Bofors illumination rocket launcher

The Mackenzie-class destroyer was a class of warship used by the Royal Canadian Navy and Canadian Forces from the 1960s–1990s. Six such ships were envisioned, of which four were completed to this specification. The last two hulls were completed to the post DDH conversion St. Laurent-class design (which included helicopter hangars); they were designated as the Annapolis class instead. The four Mackenzie-class destroyers spent most of their service in the Pacific Ocean, used primarily in a training role. Their only significant update was the DELEX (destroyer life extension) program, which was completed between 1982 and 1985 and updated their navigational radar and their sonar.^[1]