Antipodes (Perry / Hoffmann / Marlin / SAL) is a submarine originally called the PC15 built by Perry Submarine in 1973. The sub was utilized for diver lock-out operations in the oil fields of the North Sea.After her career in this field the submarine was retrofitted by Deep Sea Adventures to have 58 in diameter hemi-spherical domes at each end of the hull. 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?
Answer:
Mean Of Transportation