USS Wachusetts (SP-548) was an armed motorboat that served in the United States Navy as a patrol vessel from 1917 to 1919. She was renamed SP-548 during her period of service. In 1919 she was transferred to the United States Bureau of Fisheries and renamed USFS Fulmar, and operated as a fisheries science research vessel on the Great Lakes until 1933 or 1934, when she was transferred to the Ohio Division of Conservation.