She was renamed Lorain on 7 February 1944; launched on 18 March 1944, sponsored by Mrs. Fred Henderson; and commissioned at Baltimore, Maryland, on 15 January 1945.

Lorain departed Baltimore on 28 January 1945 for Norfolk, Virginia, and Bermuda, where the Coast Guard-crewed frigate underwent shakedown and training.

After further training in Casco Bay, Maine, she sailed on 11 April for NS Argentia, Newfoundland, her base for weather patrols through the following summer.

Lorain returned to Boston on 14 September, conducted a weather patrol off New England in late October, then sailed on 2 December for duty in the Caribbean.

Disarmed a year later, she served as weather observation ship in the North Atlantic until sunk by a leftover World War II mine on 16 September 1950.