Mistletoe's prewar operations were out of Gloucester, New Jersey and Portsmouth, Virginia. She transferred to the U.S. Navy 1 November 1941 in accordance with Executive Order 8929. Until 1 January 1946 she served as a coastal buoy tender in the Hampton Roads area. Executive Order No. 9666 dated 28 December 1945 returned Mistletoe to the Treasury Department. In 1966 she was redesignated WLM‑237. She continued coastal buoy tender operations out of Gloucester City and Portsmouth into 1969.