Question: German submarine U-170 was a Type IXC/40 U-boat of Nazi Germany's Kriegsmarine built for service during World War II.Her keel was laid down on 21 May 1941 by the Deutsche Schiff- und Maschinenbau AG in Bremen as 'werk' 709. She was launched on 6 June 1942 and commissioned on 19 January 1943 with Kapitanleutnant Gunther Pfeffer in command.The U-boat's service began with training as part of the 4th U-boat Flotilla. She then moved to the 10th flotilla on 1 June 1943 for operations. 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