Answer the following question: USS Express No. 4 (SP-745) sometimes written as Express # 4 was a United States Navy patrol vessel in commission from 1917 to 1919.Express No. 4 was built as a private motorboat of the same name in 1917 by C. F. Ferguson at Groton Connecticut. Upon her completion in early July 1917 the U.S. Navy leased her from her owner M. F. Plant of Groton for use as a section patrol boat during World War I. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
Answer:
Mean Of Transportation