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. SM UC-110 -  SM UC-110 was a German Type UC III minelaying submarine or U-boat built for the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was launched on 6 July 1918 and completed on 16 December 1918. Because UC-110 was finished after the end of fighting she was never commissioned into the German Imperial Navy; had she been so commissioned she would have been named SM UC-110.
A:
Mean Of Transportation