Given the question: HMS R1 - HMS R1 was a British R class submarine built at Chatham Dockyard. She was laid down on 4 February 1917 and launched on 25 April 1918 by Lady Sturdee. R1 was commissioned on 14 October 1918. She came too late to see any combat in World War I like most of the other R class submarines. R1 was sold on 20 January 1923 to J. Smith. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
The answer is:
Mean Of Transportation