Given the question: 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. Solstice-class cruise ship - The Solstice class is a class of cruise ships primarily operated by Celebrity Cruises a subsidiary of Royal Caribbean Cruises Ltd. The class is constructed by Meyer Werft of Germany. At present there are five active Solstice-class ships; the lead vessel of the class Celebrity Solstice the second ship of the class Celebrity Equinox and the third ship of the class Celebrity Eclipse which was delivered on 15 April 2010.
The answer is:
Mean Of Transportation