Please answer the following question: USS Grampus (SS-4) a Plunger-class submarine later named A-3 was the fourth ship of the United States Navy to be named for two members of the dolphin family (Delphinidae): Grampus griseus also known as Risso's dolphin and Orcinus orca also known as the killer whale. Her keel was laid down on 10 December 1900 at San Francisco California by Union Iron Works a subcontractor for the Holland Torpedo Boat Company of New York City. She was launched on 31 July 1902 sponsored by Mrs. Marley F. 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