Commissioned at Montreal on September 6, 1941, Morden arrived at Halifax on September 16. She joined Newfoundland Command and left St. John's November 23 to escort SC.56, her first convoy, to Iceland. She continued on to the U.K., however, to carry out two months' refit and repairs at Southampton. She left the Clyde on March 5, 1942, to pick up westbound convoy ON.73, and was thereafter continuously in service as an ocean escort until the fall of 1943 - from August, 1942, as a member of EG C-2. After a brief refit at Lunenburg in June, 1943, and workups at Pictou, she sailed for Plymouth to join EG 9. She left Devonport on September 15 to join the group on patrol south of the Scilly Islands, but the group was ordered to the assistance of combined convoy ONS.18/ON.202 which lost six merchant ships and three of its escort. In October Morden rejoined EG C-2 and was given an extensive refit at Londonderry between late November, 1943 and the end of January, 1944. The work done included the lengthening of her fo'c's'le. She left 'Derry for the last time on November 14, 1944. In May, 1945, on completion of a long refit at Sydney and Halifax, she joined EG W-9 of WLEF and left New York on May 23 as local escort to HX.358, the last HX convoy. Paid off on June 29, 1945, at Sorel, she was broken up at Hamilton in 1946.
Focsle Extended, Londonderry, Ireland, 29 Jan 44