HMCS Terra Nova (DDE 259) was a Restigouche-class destroyer that served the Royal Canadian Navy and later the Canadian Forces from 1959 until 1997. As the sixth vessel of her class, she was the first Canadian warship to bear the name Terra Nova, reflecting her connection to Newfoundland’s Terra Nova River and the historic Antarctic exploration ship. Constructed by Victoria Machinery Depot Co. Ltd. in Victoria, British Columbia, she was laid down on November 14, 1952, launched on June 21, 1955, and commissioned on June 6, 1959. She measured approximately 112 meters (366 feet) in length, with a beam of 13 meters (42 feet) and a draught of 4.01 meters (13 feet 2 inches). Displacing around 2,000 tonnes standard and 2,500 tonnes at deep load, she had a complement of 214 crew members. Propulsion was provided by two English Electric geared steam turbines powered by two Babcock & Wilcox boilers, delivering 22,000 kilowatts (30,000 shp) for a maximum speed of 28 knots. The ship’s initial armament included twin mounts of Vickers 3-inch/70 caliber dual-purpose guns forward and a twin 3-inch/50 caliber mount aft, along with Limbo Mk 10 mortars and Bofors 40 mm guns (later removed). Equipped with SPS-10, SPS-12, Sperry Mk 2, and SPG-48 radar, and SQS-501/SQS-503 sonar, she was designed for anti-aircraft and anti-submarine warfare. The addition of Mk 43 homing torpedoes in 1958 enhanced her anti-submarine capabilities. In the 1960s, Terra Nova underwent significant upgrades, including the IRE conversion which replaced her twin 3-inch/50 caliber mount with an RUR-5 ASROC launcher and Mk 69 fire control systems, boosting her anti-submarine effectiveness. Later, in the 1980s, she received the DELEX refit, modernizing her sensor, weapon, and communication systems, and fitting her with new torpedo tubes for Mk 46 torpedoes. During the Gulf War in 1990-91, she was extensively modified, removing her ASROC system to install Harpoon missiles, a Mk 15 Phalanx CIWS, and additional 40 mm guns for active combat operations. Throughout her service, HMCS Terra Nova participated in numerous operations, including NATO exercises, search and rescue missions, and maritime interdiction, notably in Vietnam, Haiti, and the Persian Gulf. She was decommissioned in July 1997, sold for scrapping in 2009, and ultimately sank at her moorings during dismantling. Her long service life and multiple upgrades underscore her importance within Canadian naval history.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.