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 USS SP-548 during her period of service. Wachusetts was built as the private motorboat W.C.T.U. in 1916 by W. A. and S. D. Moss of Friendship, Maine. She had been renamed Wachusetts by the time she was acquired by the U.S. Navy in the spring of 1917 from the Howard Lumber Company of Boston, Massachusetts, for World War I service. The Navy took possession of her on 26 April 1917 and designated her SP-548.