Annapolis-class destroyer

HMCS Nipigon underway during NATO Exercise Ocean Safari '85.
Class overview
Name	Annapolis class
Builders	Halifax Shipyards Ltd., Halifax Marine Industries Ltd., Sorel
Operators	Royal Canadian Navy  Canadian Forces
Preceded by	Mackenzie class
Succeeded by	Iroquois class
Built	1960–1964
In commission	1964–1998
Planned	2
Completed	2
Retired	2
General characteristics
Type	Destroyer escort
Displacement	3,420 long tons (3,474.9 t) full load
Length	366 ft (112 m)
Beam	42 ft (13 m)
Draught	23.5 ft (7.2 m)
Propulsion	2-shaft English Electric geared steam turbines 2 Babcock & Wilcox boilers 30,000 shp (22,000 kW)
Speed	28 kn (51.9 km/h; 32.2 mph)
Complement	228
Sensors and processing systems	Original: 1 × SPS-12 air search radar 1 × SPS-10B surface search radar 1 × Sperry Mk.2 navigation radar 1 × URN 20 TACAN 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-504 VDS medium frequency active search sonar 1 × UQC-1B "Gertrude" underwater telephone 1 × Mk 60 GFCS fire control with SPG-48 tracker (GUNAR) DELEX: 1 × Marconi SPS-503 air search radar 1 × Raytheon/Sylvania SPS-502 surface search radar 1 × Sperry Mk.127E navigation radar 1 × URN 25 TACAN radar 1 × SQS-505(V) or SQS-510 hull mounted active search sonar 1 × SQS-504 VDS medium frequency active search sonar 1 × SQR-19(V) CANTASS towed array sonar 1 × UQC-1B "Gertrude" underwater telephone 1 × Mk 60 GFCS fire control with SPG-48 tracker (GUNAR)
Electronic warfare & decoys	Original: 1 × ULQ-6 jammer 1 × WLR-1C radar analyzer 1 × UPD-501 radar detector 1 × SRD-501 HF/DF DELEX: 1 × SLQ-501 intercept (CANEWS) 1 × ULQ-6 jammer 1 × SRD-501 HF/DF
Armament	Original: 1 × FMC 3-inch/50 Mk.33 twin gun 1 × Mk. NC 10 Limbo ASW mortar 1 × Mk.4 thrower with homing torpedoes DELEX: 1 × FMC 3-inch/50 Mk.33 twin gun 2 × triple Mk.32 12.75-inch torpedo tubes firing Mk.44 or Mk.46 Mod 5 torpedoes
Aircraft carried	1 CH-124 Sea King ASW helicopter
Aviation facilities	Midships helicopter deck and hangar with Beartrap.

The Annapolis-class destroyer escort was a two-ship class of destroyer escorts that saw service with the Royal Canadian Navy and Canadian Forces from the 1960s to the 1990s. The final version of the St. Laurent-class design,^[1] the class was used extensively for anti-submarine warfare purposes. Both ships were sunk as artificial reefs after being retired, one on each coast of Canada.