Bagaduce (Tug No. 21) was laid down on 16 July 1918 at Buffalo, New York, by the Ferguson Steel and Iron Company; briefly named Ammonoosuc in February 1919; renamed Bagaduce on 24 February 1919; launched 5 April 1919; and commissioned at Buffalo on 18 September 1919, Lt.(jg.) Frank Mogridge in command. Bagaduce was decommissioned at the Mare Island Naval Shipyard on 22 June 1946, her name was struck from the Naval Vessel Register on 31 July 1946, and she was transferred for disposal to the Maritime Commission at Suisun Bay, California, on 9 January 1947.