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St. Laurent class destroyer

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HMCS Margaree (DDH-230)

HMCS Margaree (D230) underway during exercise FLEET EX 1-90 on February 1st, 1990.

The St. Laurent-class destroyers were a class of destroyers that served in the Royal Canadian Navy from the mid-1950s to the mid-1990s. This was the first major class of warship designed and built in Canada. There were seven ships of the class commissioned between 1955 and 1957.

The St. Laurent-class originally called for fourteen vessels to be commissioned no later than 1955; however, changing design specifications due to the rapidly changing Cold War naval environment. saw only the first seven completed by 1957. The remaining seven vessels were built as the follow-on Restigouche-class to incorporate advancements in naval warship design in the preceding years.

SpecificationsEdit

Original ConfigurationEdit

  • Type: Destroyer
  • Service Period: 1955-1994
  • Characteristics:
    • Length: 371 feet (113.08 meters)
    • Beam: 42 feet (12.8 meters)
    • Draft: 13 feet 6 inches (4.12 meters)
    • Displacement: 2,535 tons (Standard); 3,136 tons (Full Load)
  • Crew: 249
  • Propulsion: 3 x Babcock and Wilcox boilers, 2 x English Electric geared steam turbines, 30,000 shp
  • Range: 4,750 nautical miles (8,797 kilometers) at 14 knots (25.93 km/h)
  • Speed: 28.5 knots (52.78 km/h)
  • Sensor Suite:
    • 1 x SPS-12 air search RDF
    • 1 x SPS-10B surface search RDF
    • 1 x Sperry Mk.2 navigation RDF
    • 1 x SQS-10 or -11 hull mounted active search and attack ASDIC
    • 1 x SQS-501 (Type 162) high frequency bottom profiling ASDIC
    • 1 x SQS-502 (Type 170) high frequency Limbo mortar control ASDIC
    • 1 x UQC-1B "Gertrude" underwater telephone
    • 1 x GUNAR (Mk.64 GFCS with 2 on-mount SPG-48 directors)
  • Countermeasures:
    • 1 x DAU HF/DF (high frequency direction finder)
  • Armament:
    • 1 x twin mount 4.5"/45-caliber Mk.6 naval guns
    • 4 x 40mm Bofors anti-aircraft guns (2x2)
    • 1 x Mk.10 Limbo ASW mortar
    • 12 x 21" anti-submarine torpedo tubes

Final ConfigurationEdit

  • Type: Destroyer
  • Service Period: 1955-1994
  • Characteristics:
    • Length: 371 feet (113.08 meters)
    • Beam: 42 feet (12.8 meters)
    • Draft: 13 feet 6 inches (4.12 meters)
    • Displacement: 2,535 tons (Standard); 3,136 tons (Full Load)
  • Crew: 249
  • Propulsion: 3 x Babcock and Wilcox boilers, 2 x English Electric geared steam turbines, 30,000 shp
  • Range: 4,750 nautical miles (8,797 kilometers) at 14 knots (25.93 km/h)
  • Speed: 28.5 knots (52.78 km/h)
  • Sensor Suite:
    • 1 x SPS-12 air search RDF
    • 1 x SPS-10B surface search RDF
    • 1 x Sperry Mk.2 navigation RDF
    • 1 x URN 20 TACAN RDF
    • 1 x SQS-10 or -11 hull mounted active search and attack ASDIC
    • 1 x SQS-501 (Type 162) high frequency bottom profiling ASDIC
    • 1 x SQS-502 (Type 170) high frequency Limbo mortar control ASDIC
    • 1 x SQS-504 medium frequency active search variable depth ASDIC
    • 1 x UQC-1B "Gertrude" underwater telephone
    • 1 x GUNAR (Mk.64 GFCS with 1 on-mount SPG-48 director)
  • Countermeasures:
    • 1 x WLR 1C RDF warning receiver
    • 1 x UPD 501 RDF detection system
    • 1 x SRD 501 HF/DF
  • Armament:
    • 1 x twin mount 4.5"/45-caliber Mk.6 naval guns
    • 1 x Mk.10 Limbo ASW mortar
    • 2 x 12.75" triple fire torpedo tubes (firing Sting Ray torpedoes)
  • Aircraft Carried: 1 x Westland Sea King
  • Aviation Facilities: 1 x midships helicopter deck with Beartrap and hangar

Unit RunEdit

  • HMCS St. Laurent (D260)
  • HMCS Saguenay (D261)
  • HMCS Skeena (D262)
  • HMCS Ottawa (D263)
  • HMCS Margaree (D264)
  • HMCS Fraser (D265) - turned into museum ship at Bridgewater, Nova Scotia
  • HMCS Assiniboine (D266)

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