Please answer the following question: USS Nadli (YTB-534/YTM-534) was a Hisada-class harbor tug in the service of the United States Navy.Nadli provided towing and berthing services in the San Francisco Bay area. She also assumed waterfront fire protection and inner harbor patrol duties on an on-call basis. In March 1946 Nadli was placed in reserve out of service and berthed at Astoria Oregon. 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