Please 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. HMS Elfin (1933) -  HMS Elfin (pennant number T25) was a torpedo recovery vessel built for the Royal Navy. She was built by J. Samuel White & Company East Cowes Isle of Wight was launched on 20 November 1933 and commissioned on 16 January 1934. She was builder's number 1754. Her home port was the Navy's torpedo trials establishment HMS Vernon and she was based at Portland. A sistership Redwing was constructed under builder's number 1753 and was stationed at HMS Defiance Devonport.
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Mean Of Transportation