Given the question: ORP Komendant Pisudski was a Filin-class guard ship originally built at Ab Crichton naval yard in Turku Finland for the Imperial Russian Navy. She was bought by the Polish Navy in 1920 and served until sunk in the Invasion of Poland on September 30 1939. Raised by the Germans she was subsequently renamed Heisternest (M 3109) and served in the Kriegsmarine. Heisternest was sunk in a U.S. bomb raid in Nantes France on September 16 1943. 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?
The answer is:
Mean Of Transportation