Q: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. Ohio Replacement Submarine - The Ohio Replacement Submarine (formerly the SSBN-X Future Follow-on Submarine) is a future United States Navy submarine designed to replace the Trident missile-armed Ohio-class ballistic missile submarines. The first submarine is scheduled to begin construction in 2021 and enter service in 2031. From there the submarine class will serve through 2085.
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Mean Of Transportation