Commissioned at Quebec City on October 26, 1944, Lachute arrived at Halifax in mid-November and left for Bermuda on December 2 for three weeks' workups. Assigned on her return to EG C-5 at St. John's, she left there on January 5, 1945, to escort her first convoy, SC.164. She served the remainder of her career as a mid-ocean escort, leaving Londonderry on May 26 to join On.305, the last westbound convoy of the war. On July 10 she was paid off and placed in reserve at Sorel. In 1947 she was sold to the Dominican Republic and joined its navy as Colon. Deleted from the active list in 1978, she was driven ashore in a hurricane on August 31, 1979.