USS Grampus (SS-207) a Tambor-class submarine was the sixth ship of the United States Navy to be named for a member of the dolphin family (Delphinidae): Grampus griseus also known as Risso's dolphin.Her keel was laid down by the Electric Boat Company of Groton Connecticut. She was launched on 23 December 1940 (sponsored by Mrs. Clark H. Woodward) and commissioned on 23 May 1941 at New London Connecticut with Lieutenant Commander Edward S. Hutchinson in command. 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?
The answer to this question is:
Mean Of Transportation