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. Italian submarine Durbo - The Italian submarine Durbo was an Italian Adua-class submarine serving in the Regia Marina during World War II. She was named after Durbo in Ethiopia and was built in OTO's shipyard. She was laid down on 6 March 1938 and commissioned on 1 July of the same year. She was scuttled on 18 October 1940 east of Gibraltar after being attacked by the destroyers HMS Firedrake and HMS Wrestler .
A:
Mean Of Transportation