The Fleur de Lis was a 19th-century yacht and pilot boat built in 1865 by J. B. Van Deusen for Captain John S. Dickerson of the New York Yacht Club. She was bought by pilot Franklin B. Wellock and became the Boston pilot boat No. 7. She was known as one of the best pilot boats in the Boston harbor. By 1904, the pilot boat Fleur de Lis was lying in a graveyard for old boats in East Boston.