Commissioned on October 19, 1944, at Quebec City, she left on November 6 for Halifax and in December proceeded to Bermuda to work up. Returning northward in January, 1945, Penetang joined convoy HX.331 at New York as local escort. She was allocated in February to EG C-9, and made the crossing to the group's Londonderry base as an escort to SC.168. She spent the rest of the war as a mid-ocean escort, returning to Canada in June, 1945, to be employed as a troop carrier between St. John's and Quebec City. Once of the few frigates not taken in hand for tropicalization, she was paid off on November 10 and laid up at Shelburne. She was sold in December to Marine Industries Ltd., but later re-acquired and converted to a Prestonian class ocean escort, re-commissioning on June 1, 1954. Again paid off on September 2, 1955, she was lent to the Norwegian navy on March 10, 1956 and re-named Draug. Transferred outright three years later, she served until 1966 and was then broken up.
Recommissioned as a Prestonian Class on 1-Jun-54. Pendant Number 316. Finally Paid Off 25-Jan-56.