Commissioned at Sorel on April 28, 1942, La Malbaie arrived at Halifax on May 13 and, after working up there and at Pictou, joined WLEF late in June. After undergoing mechanical repairs at Halifax from August 11 to December 20, she was assigned to EG C-3, arriving at Londonderry for the first time on January 12, 1943, from HX.221. She served with C-3 until her final departure from 'Derry on October 26, 1944. During this period she underwent a major refit at Liverpool, N.S., mid-September to mid- December, 1943. Late in December, 1944, she joined Halifax Force for the duration of hostilities, was paid off on June 28, 1945, at Sorel, and broken up in 1951 at Hamilton. A pre-launching photo of La Malbaie served as the model for the 20 cent Canadian stamp of 1942.