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Restigouche-class destroyer

Canadian Restigouche class DDEs off Alaska 1983.JPEG
Restigouche, Terra Nova and Gatineau in 1983
Class overview
Name: Restigouche class
Builders:
Operators:
Preceded by: St. Laurent class
Succeeded by: Mackenzie class
In commission: 7 June 1958 – 1 July 1998
Planned: 7
Completed: 7
Retired: 7
General characteristics
Type: Destroyer escort
Displacement:
  • As built:
  • 2,390 t (2,352.3 long tons) (normal)
  • 2,800 t (2,755.8 long tons) (deep load)
  • After IRE:
  • 2,900 t (2,854.2 long tons) (deep load)
Length:
  • 366 ft (111.6 m) (waterline)
  • 371 ft (113.1 m) (overall)
Beam: 42 ft (12.8 m)
Draught:
  • 13.17 ft (4.0 m) normal
  • 14 ft (4.3 m) deep load
Propulsion:
  • 2 × shafts
  • 2 × English-Electric geared steam turbines
  • 2 × Babcock & Wilcox boilers
  • 30,000 shp (22,000 kW)
Speed: 28 knots (52 km/h)
Range: 4,750 nautical miles (8,800 km) at 14 knots (26 km/h)
Complement:
  • As built: 249
  • After IRE/DELEX: 214
Sensors and
processing systems:
  • As built:
  • 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-10 hull mounted active search sonar
  • 1 × Mk.69 gunnery control system with SPG-48 director forward
  • 1 × GUNAR Mk.64 GFCS with on-mount SPG-48 director aft
  • After IRE:
  • 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-10 hull mounted active search sonar
  • 1 × AQA-5 Jezebel passive tracer sonar
  • 1 × Mk.69 gunnery control system with SPG-48 director forward
  • After DELEX:
  • 1 × Marconi SPS 502 air search radar
  • 1 × Raytheon SPS 10D surface search radar
  • 1 × Sperry Mk.127 E navigation radar
  • 1 × SQS-505 hull sonar
  • 1 × SQS 505 VDS sonar
  • 1 × Mk.69 gunnery control system with SPG-515 director forward
  • After Gulf War:
  • 1 × Marconi SPS 502 air search radar
  • 1 × Raytheon SPS 10D surface search radar
  • 1 × Sperry Mk.127 E navigation radar
  • 1 × SQS-505 hull sonar
  • 1 × SQS-505 VDS sonar
  • 1 × C-Tech mine avoidance sonar
  • 1 × Mk.69 gunnery control system with SPG-515 director forward
Electronic warfare
& decoys:
  • As built:
  • 1 × DAU HF/DF (high frequency direction finder)
  • After IRE:
  • 1 × ULQ-6 jammer
  • 1 × WLR-1C radar analyzer
  • 1 × UPD-501 radar detector
  • 1 × SRD-501 HF/DF
  • After DELEX:
  • 1 × CANEWS
  • 1 × ULQ-6 jammer
  • After Gulf War:
  • 1 × CANEWS
  • 1 × ULQ-6 jammer
  • 1 × ALR-74 threat warning
Armament:
  • As built:
  • 1 × 3"/70 Mk.6 Vickers twin mount forward
  • 1 × 3"/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 launchers
  • After IRE/DELEX:
  • 1 × 3"/70 Mk.6 Vickers twin mount forward
  • 1 × Mk.112 ASROC octuple launcher
  • 1 × Mk NC 10 Limbo ASW mortars
  • 2 × Mk.32 triple torpedo launchers firing Mk.46 Mod 5 torpedoes
  • After Gulf War:
  • 1 × 3"/70 Mk.6 Vickers twin mount forward
  • 2 × Harpoon quad SSM launchers
  • shoulder-launched Blowpipe and Javelin SAMs
  • 1 × Phalanx 20 mm CIWS
  • 2 × 40 mm/60 Bofors guns
  • 6 × .50 cal. machine guns
  • 2 × Mk.32 triple torpedo launchers firing Mk.46 Mod 5 torpedoes

The Restigouche-class destroyer was a class of seven destroyer escorts that served the Royal Canadian Navy and later the Canadian Forces from the late-1950s to the late-1990s. All seven vessels in the class were named after rivers in Canada.

The Royal Canadian Navy began planning the St. Laurent-class destroyer in the late 1940s and originally intended to procure fourteen vessels. Delays in design and construction saw the number of vessels for the St. Laurent class halved to seven. The seven remaining vessels were redesigned as the Restigouche class, taking into account design improvements found during construction of the St. Laurents. The seven ships of the class were commissioned between 1958 and 1959.

Based on the preceding St. Laurent-class design, the Restigouches had the same hull and propulsion, but different weaponry. Initially the St. Laurent class had been planned to be 14 ships. However the order was halved, and the following seven were redesigned to take into improvements made on the St. Laurents. As time passed, their design diverged further from that of the St. Laurents.

The ships had a displacement of 2,000 tonnes (2,000 long tons), 2,500 t (2,500 long tons) at deep load. They were designed to be 112 metres (366 ft) long with a beam of 13 metres (42 ft) and a draught of 4.01 metres (13 ft 2 in). The Restigouches had a complement of 214.

The Restigouches were by powered by two English Electric geared steam turbines, each driving a propellor shaft, using steam provided by two Babcock & Wilcox boilers. They generated 22,000 kilowatts (30,000 shp) giving the vessels a maximum speed of 28 knots (52 km/h; 32 mph).


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