The third Charlotte (PF-60) was launched on 30 October 1943, by Globe Shipbuilding Company, in Superior, Wisconsin, under a Maritime Commission contract, sponsored by Mrs. R. Billings; placed in service on 19 July 1944; commissioned on 9 October 1944 and reported to the U.S. Atlantic Fleet.

Charlotte cleared Boston, Massachusetts, on 8 January 1945 to take up what was to be her primary mission through her naval service, sailing to NS Argentia, Newfoundland, where she took up weather station duty.

This information not only affected flight operations and ship movements in the western Atlantic where she patrolled, but since weather in general moves to the eastward, aided in predicting European conditions.

Between 21 and 26 March 1945, Charlotte aided Surprise (PG-63) and Tenacity (PG-71), rendezvousing at sea with the ice-damaged gunboats and towing them to Argentia.

Similar duty in the North Atlantic, during which she kept alert for the possibility of rescuing downed aviators, continued until 17 January 1946, when she sailed from Boston for a weather station off Bermuda.