Answer the following question: USS Assurance (MSO-521) -  USS Assurance (AM-521/MSO-521) was an Ability-class minesweeper acquired by the U.S. Navy for the task of removing mines that had been placed in the water to prevent the safe passage of ships.The first ship to be named Assurance by the Navy MSO-521 was laid down on 28 January 1957 at Sturgeon Bay Wisconsin by Peterson Builders Inc.; launched on 31 August 1957; sponsored by Mrs. Vernon W. Thomson; and commissioned at Boston Massachusetts on 21 November 1958 Lt. Comdr. Frank L. 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?
Answer:
Mean Of Transportation