Q:Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. USS Sea Foam (1861) -  USS Sea Foam (1861) was a brig purchased by the Union Navy during the American Civil War. She was used by the Union Navy primarily as a mortar gunboat but also as a gunboat stationed off Confederate ports to prevent their trading with foreign countries. Towards the war's end she was converted into a storeship keeping fleet ships supplied with necessary supplies.
A:
Mean Of Transportation