Built at Sorel, she was towed in December, 1940, to Liverpool, N.S. for completion and commissioned there on January 16, 1941. She left Halifax on March 5 with convoy HX.113 for the U.K., and while there received finishing touches at Greenock. Following workups at Tobermory in June Fennel was assigned to NEF, first serving as an ocean escort between St. John's and Londonderry. In June, 1942, she commenced a year's service with the newly formed WLEF. She underwent a refit at New York from mid-July to late September, 1942. In June, 1943, she was detached to EG C-2 for one round trip to 'Derry, and on returning she went to Baltimore, Md., for a refit which included the extension of her fo'c's'le, completing on September 6. After working up at Pictou she resumed her ocean escort duties with C-2, and on March 6, 1944, was one of seven escorts of HX.280 that hounded U 744 to its death. In August she had two months' refit at Pictou, followed by three weeks' workups in Bermuda and at year's end transferred to EG C-1 for the duration of the war. Fennel arrived at Greenock May 29, 1945, from one of the last convoys, and was returned to the RN at Londonderry on June 12. She was sold in 1946 for conversion to a whale-catcher, entering service in 1948 as the Norwegian Milliam Kihl. She was broken up at Grimstad, Norway, in 1966.
Focsle Extended, Baltimore, MD, 6 Sep 43