Please answer the following question: USS Dianthus (SP-639) was a United States Navy patrol vessel in commission from 1917 to 1918.Dianthus was built as a private motorboat of the same name by the Herreshoff Manufacturing Company at Bristol Rhode Island in 1913. On 21 May 1917 the U.S. Navy acquired her under a free lease from her owner John P. Crozer of Upland Pennsylvania for use as a section patrol boat during World War I. She was commissioned as USS Dianthus (SP-639) on 26 May 1917 with Ensign J. J. 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?
A:
Mean Of Transportation