Chippewa crossed the Atlantic from Norfolk to Casablanca to lay buoys there between 4 May 1943 and 9 June, returning to Boston 26 June. Two days later, she cleared for Norfolk and overhaul, and on 19 July began towing duty with a passage to Bermuda and Jacksonville. Assigned to duty in the Caribbean Sea Frontier, she made Trinidad, British West Indies, her principal base until 6 May 1944, when she returned to Norfolk for repairs. On 15 May she was reclassified ATF-69.
