Please answer the following question: SS Nenana is a river sternwheel paddleship currently preserved and displayed at Pioneer Park in Fairbanks Alaska. She is the only surviving wooden one of this type. She was declared a National Historic Landmark in 1989. The ship was commissioned by the Alaska Railroad and provided freight transfer from the railroad yards at Nenana to villages along the Yukon and Tanana Rivers. 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