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HMCS Ottawa (DDE 229)

History
Canada
Name: Ottawa
Namesake: Ottawa River
Builder: Canadian Vickers, Montreal
Laid down: 8 June 1951
Launched: 29 April 1953
Commissioned: 10 November 1956
Decommissioned: 31 July 1992
Reclassified: 21 October 1964 (as DDH)
Identification: DDH 229
Honours and
awards:		 Atlantic 1939–45, Normandy 1944, English Channel 1944, Biscay 1944
Fate: Scrapped in 1994.
Badge: Gules, a bend wavy argent charged with two cotises wavy azure over all a beaver or, the sinister forepaw resting on a log of silver birch proper.
General characteristics
Type: Destroyer escort
Displacement:
  • As DDE:
  • 2263 tons (normal), 2800 tons (deep load)
  • As DDH:
  • 2260 tons (normal), 3051 tons (deep load)
Length: 366 ft (111.6 m)
Beam: 42 ft (12.8 m)
Draught:
  • As DDE: 13 ft (4.0 m)
  • As DDH:14 ft (4.3 m)
Propulsion: 2-shaft English-Electric geared steam turbines, 3 Babcock & Wilcox boilers 22,000 kW (30,000 shp)
Speed: 28.5 knots (52.8 km/h)
Range: 4,570 nautical miles (8,463.6 km) at 12 knots (22.2 km/h)
Complement:
  • As DDE: 249
  • As DDH: 213 plus 20 aircrew
Sensors and
processing systems:
  • As DDE:
  • 1 × SPS-12 air search radar
  • 1 × SPS-10B surface search radar
  • 1 × Sperry Mk.2 navigation radar
  • 1 × SQS-10 or −11 hull mounted active search and attack sonar
  • 1 × SQS-501 (Type 162) high frequency bottom profiling sonar
  • 1 × SQS-502 (Type 170) high frequency Limbo mortar control sonar
  • 1 × UQC-1B "Gertrude" underwater telephone
  • 1 × GUNAR (Mk.64 GFCS with 2 on-mount SPG-48 directors)
  • As DDH:
  • 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-10 or −11 hull mounted active search and attack sonar
  • 1 × SQS-501 (Type 162) high frequency bottom profiling sonar
  • 1 × SQS-502 (Type 170) high frequency Limbo mortar control sonar
  • 1 × SQS-504 VDS, medium frequency active search (except 233 after 1986)
  • 1 × UQC-1B "Gertrude" underwater telephone
  • 1 × GUNAR (Mk.64 GFCS with 1 on-mount SPG-48 director)
Electronic warfare
& decoys:
  • As DDE:
  • 1 × DAU HF/DF (high frequency direction finder)
  • As DDH:
  • 1 × WLR 1C radar warning
  • 1 × UPD 501 radar detection
  • 1 × SRD 501 HF/DF
Armament:
  • As DDE:
  • 2 × 3 in (76 mm) Mk.33 FMC twin mounts guns
  • 2 × 40 mm "Boffin" single mount guns
  • 2 × Mk NC 10 Limbo ASW mortars
  • 2 × single Mk.2 "K-gun" launchers with homing torpedoes
  • As DDH:
  • 1 × 3"/50 Mk.33 FMC twin mount gun
  • 1 × Mk NC 10 Limbo ASW mortar
  • 2 × triple Mk.32 12.75 inch launchers firing Mk.44 or Mk.46 Mod 5 torpedoes
Aircraft carried:
Aviation facilities:
  • As DDH:
  • 1 × midships helicopter deck with Beartrap and hangar

HMCS Ottawa (DDH 229) was a St. Laurent-class destroyer that served in the Royal Canadian Navy and later the Canadian Forces from 1956 to 1992. Ottawa was the first bilingual ship to serve in the Canadian navy.

The need for the St. Laurent class came about in 1949 when Canada joined NATO and the Cold War was in its infancy. The Royal Canadian Navy (RCN) was assigned responsibility for anti-submarine warfare (ASW) and controlling sea space in the western North Atlantic. The St Laurent class were built to an operational requirement much like that which produced the British Type 12, and were powered by the same machinery plant. The rounded deck-edge forward was adopted to prevent ice forming. The vessels were designed to operate in harsh Canadian conditions. They were built to counter nuclear, biological and chemical attack conditions, which led to a design with a rounded hull, a continuous main deck, and the addition of a pre-wetting system to wash away contaminants. The living spaces on the ship were part of a "citadel" which could be sealed off from contamination for the crew safety. The ships were sometimes referred to as "Cadillacs" for their relatively luxurious crew compartments; these were also the first Canadian warships to have a bunk for every crew member since previous warship designs had used hammocks.

As built, the ships were 366 feet (112 m) long overall with a beam of 42 feet (13 m) and a draught of 13 feet 2 inches (4.01 m). The destroyer escorts displaced 2,263 tonnes (2,227 long tons) standard and 2,800 tonnes (2,800 long tons) at deep load. The destroyer escorts had a crew of 12 officers and 237 enlisted.


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