Answer the following 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. Rani Abbakka-class inshore patrol vessel -  The Rani Abbakka class inshore patrol vessels are a series of craft being built by Hindustan Shipyard Ltd. for the Indian Coast Guard. They are based on Australian Thornycroft design.
Answer:
Mean Of Transportation