HMCS Prince Rupert was a River-class frigate that served with the Royal Canadian Navy during the Second World War, primarily functioning as a convoy escort in the Battle of the Atlantic. She was constructed as part of Canada's 1942–1943 River-class building program, with her keel laid down on 1 August 1942 by Yarrows Ltd. at Esquimalt. The vessel was launched on 3 February 1943 and commissioned into service on 30 August 1943. Designed by William Reed of Smith's Dock Company, the River-class frigate was intended to improve upon earlier convoy escort vessels like the Flower-class corvette. This design featured significant enhancements, including better accommodations, increased range—nearly double that of a corvette at 7,200 nautical miles at 12 knots—and improved anti-submarine armament. Her weaponry included a twin 4-inch gun mount forward, a 12-pounder aft, Hedgehog anti-submarine mortars, depth charge rails, and side-mounted throwers. Notably, she was equipped with advanced sonar and radar systems, including the 147B Sword horizontal fan echo sonar transmitter, enhancing her tracking capabilities against submarines. HMCS Prince Rupert’s service record included working with the Mid-Ocean Escort Force, escorting trans-Atlantic convoys until November 1944. A notable engagement occurred on 13 March 1944, when she, alongside USS Haverfield, USS Hobson, and aircraft from American and British forces, sank U-575 after a five-hour battle. During this action, she also rescued fourteen of the submarine’s crew. In November 1944, she underwent a refit at Liverpool, Nova Scotia, completed in March 1945. Afterward, she joined escort group EG 27 based out of Halifax until June 1945, when she sailed to Esquimalt. A planned tropicalization refit for service in the Pacific was canceled following Japan’s surrender. HMCS Prince Rupert was paid off on 15 January 1946 and sold in 1947. Her hull was eventually stripped and used as a breakwater at Royston, British Columbia, in 1948, marking the end of her maritime service.

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