Restigouche-class destroyer

The Restigouche class destroyer was a class of destroyers that served the Royal Canadian Navy and later the Canadian Forces from the late-1950s to the late-1990s.

The Royal Canadian Navy began planning the St. Laurent-class destroyer in the late 1940s and originally intended to procure 14 vessels. Delays in design and construction saw the number of vessels for the St. Laurent-class halved to 7. The 7 remaining vessels were redesigned as the Restigouche-class, taking into account design improvements found during construction of the St. Laurent's.

There were seven ships of the class commissioned between 1958 and 1959.

The most noticeable difference between the St. Laurent and Restigouche classes was that the latter had the bridge raised one full deck higher in order to see over a new forward Vickers 3"/70 Mk.6 gun mount.

Restigouche-class destroyer
Class Ship
Type Destroyer
Manufacturer Canadian Vickers
Origin Canada
Country Name Origin Year
Canada 1958
Country Name Operational Year Retirement Year
Iran (Persia) 1990 1991 View
Iraq 1990 1991 View
Kuwait 1990 1991 View
ManufacturerName Production From Production To Quantity
Canadian Vickers View
Burrard Dry Dock View
Halifax Shipyard View
Marine Industries View
Davie Shipbuilding View
Victoria Machinery Depot Ltd. View

Between 1966 to 1973, four ships of this class were refitted to what is known as the Improved Restigouche (IRE).

This refit involved replacing the aft 3"/50 gun with an octuple ASROC launcher. The old radar/communication mast was also replaced with a taller lattice mast. The stern was altered and one Limbo ASW mortar was removed in order to accommodate a new variable depth sonar.

The three vessels that did not receive this refit were paid off into Category "C" Reserve soon afterward, during the manpower shortages of the early to mid-1970s when the newly unified Canadian Forces experienced defence budget cuts. HMCS Chaudiere was used as a parts hulk and donated her bow to HMCS Kootenay after the latter was damaged in a collision. HMCS Columbia became a dockside engineering training platform at CFB Esquimalt and HMCS St. Croix had her weapons and propellers removed and her machinery spaces converted into classrooms.

Class overview
Name: Restigouche-class
Builders: Canadian Vickers Ltd., Montreal

Burrard Dry Dock Ltd., North Vancouver

Halifax Shipyards Ltd., Halifax

Marine Industries Ltd., Sorel

Davie Shipbuilding Ltd., Lauzon

Victoria Machinery Depot Ltd., Victoria
Operators: Royal Canadian Navy

Royal Canadian Navy
Preceded by: St. Laurent-class destroyer
Succeeded by: Mackenzie-class destroyer
In commission: 7 June 1958 – 11 July 1997
Completed: 7
Laid up: 2
Retired: 5

General characteristics
Type: Destroyer Escort
Displacement: As built:

2,390 t (2,390.0 t) (normal)

2,800 t (2,800.0 t) (deep load)

After IRE:

2,900 t (2,900.0 t) (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 x shafts

2 x English-Electric geared steam turbines

2 x Babcock and Wilcox boilers

30,000 shp
Speed: 28 knots (52 km/h)
Range: 4,750 nautical miles (8,797.0 km) at 14 knots (26 km/h)
Complement: As built: 249

After IRE/DELEX: 214
Sensors and processing systems: As built:

1 x SPS-12 air search radar

1 x SPS-10B surface search radar

1 x Sperry Mk.2 navigation radar

1 x SQS-501 high frequency bottom profiler sonar

1 x SQS-502 high frequency mortar control sonar

1 x SQS-503 hull mounted active search sonar

1 x SQS-10 hull mounted active search sonar

1 x Mk.69 gunnery control system with SPG-48 director forward

1 x GUNAR Mk.64 GFCS with on-mount SPG-48 director aft

After IRE:

1 x SPS-12 air search radar

1 x SPS-10B surface search radar

1 x Sperry Mk.2 navigation radar

1 x SQS-501 high frequency bottom profiler sonar

1 x SQS-502 high frequency mortar control sonar

1 x SQS-503 hull mounted active search sonar

1 x SQS-10 hull mounted active search sonar

1 x AQA-5 Jezebel passive tracer sonar

1 x Mk.69 gunnery control system with SPG-48 director forward

After DELEX:

1 xMarconi SPS 502 air search radar

1 x Raytheon SPS 10D surface search radar

1 x Sperry Mk.127 E navigation radar

1 x SQS-505 hull sonar

1 x SQS 505 VDS sonar

1 x Mk.69 gunnery control system with SPG-515 director forward

After Gulf War:

1 x Marconi SPS 502 air search radar

1 x Raytheon SPS 10D surface search radar

1 x Sperry Mk.127 E navigation radar

1 x SQS-505 hull sonar

1 x SQS-505 VDS sonar

1 x C-Tech mine avoidance sonar

1 x Mk.69 gunnery control system with SPG-515 director forward
Electronic warfare and decoys: As built:

1 x DAU HF/DF (high frequency direction finder)

After IRE:

1 x ULQ-6 jammer

1 x WLR-1C radar analyzer

1 x UPD-501 radar detector

1 x SRD-501 HF/DF

After DELEX:

1 x CANEWS

1 x ULQ-6 jammer

After Gulf War:

1 x CANEWS

1 x ULQ-6 jammer

1 x ALR-74 threat warning
Armament: As built:

1 x 3"/70 Mk.6 Vickers twin mount forward

1 x 3"/50 Mk.33 FMC twin mount aft

2 x Mk NC 10 Limbo ASW mortars

2 x single Mk.2 "K-gun" launchers with homing torpedoes

1 x 103 mm Bofors illumination rocket launchers

After IRE/DELEX:

1 x 3"/70 Mk.6 Vickers twin mount forward

1 x Mk.112 ASROC octuple launcher

1 x Mk NC 10 Limbo ASW mortars

2 x Mk.32 triple torpedo launchers firing Mk.46 Mod 5 torpedoes

After Gulf War:

1 x 3"/70 Mk.6 Vickers twin mount forward

2 x Harpoon quad SSM launchers

shoulder-launched Blowpipe and Javelin SAMs

1 x Phalanx 20 mm CIWS

2 x 40mm/60 Bofors guns

6 x .50-cal machine guns

2 x Mk.32 triple torpedo launchers firing Mk.46 Mod 5 torpedoes

End notes