Given the question: 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. Kora-class corvette -  Kora-Class corvettes are 1350-ton guided-missile corvettes in active service with the Indian Navy. Four vessels were built at Garden Reach Shipbuilders and Engineers (GRSE) and outfitted at Mazagon Dock Limited (MDL).
The answer is:
Mean Of Transportation