Built at Vancouver and commissioned there on September 27, 1941, Chedabucto left Esquimalt for the Atlantic on November 11, arriving at Halifax on December 17. On April 10, 1942, she sank the British SS Trongate, afire at Halifax with a cargo of explosives. Assigned briefly to WLEF, she transferred in June, 1942 to Gulf Escort Force, escorting convoys between Quebec City and Sydney. In September 1942, she was assigned to Sydney Force and then, in January, 1943, reassigned to WLEF. Soon afterward she underwent a lengthy refit at Lunenburg and Halifax on completion of which in June, 1943, she worked up at Pictou and was allocated to Gaspe Force. On October 21, 1943, Chedabucto was involved in a night collision with the cable vessel Lord Kelvin and sank 30 miles from Rimouski with the loss of one officer.
Sunk after night collision with the cable vessel LORD KELVIN on 31-Oct-43, 30 miles from Rimouski, Quebec. One officer was lost.