Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. USS Relief (AH-1) - The sixth USS Relief (AH-1) the first ship of the U.S. Navy designed and built from the keel up as a hospital ship was laid down 14 June 1917 by the Philadelphia Navy Yard; launched 23 December 1919; and commissioned 28 December 1920 at Philadelphia Commander Richmond C. Holcomb Medical Corps USN in command.With a bed capacity of 550 patients Relief was one of the world's most modern and best equipped hospital ships.
Answer:
Mean Of Transportation