Answer the following question: Norvarg was a 4748 GRT Design 1014 refrigerated cargo ship that was built in 1920 as Rotarian by Todd Drydock & Construction Corp Tacoma Washington United States for the United States Shipping Board (USSB). She was sold to the Grace Steamship Co Inc New York in 1923 and renamed Condor. In 1940 she was sold to the British Ministry of Shipping (MoS) which became the Ministry of War Transport (MoWT) in 1941 and was renamed Empire Elk. 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