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 Marmora (IX-189) -  The second USS Marmora (IX-189) was a United States Navy tanker in commission from 1944 to 1946. She saw service as a mobile floating storage ship during and in the immediate aftermath of World War II.
Mean Of Transportation