HMAS Woomera was an Australian naval vessel operated by the Australian Army and Royal Australian Navy (RAN). She was one of a class of 32 wooden motor vessels built for the Army and entered service in late 1945 as AV 1356 (Ashburton). She was transferred to the RAN on 23 January 1946 and commissioned as Woomera. The ship's main role was carrying stores and dumping obsolete ammunition at sea. 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?
A:
Mean Of Transportation