Three ships of the United States Navy (and one of the Confederate States Navy) have been named for the 15th state:
The Mississippi Flotilla captured Confederate transport CSS Kentucky at Memphis 6 June 1862. The US Navy Register for 1863 listed her as assigned to the Mississippi Squadron but no other record of her service in the Union Navy has been found.
USS Kentucky (BB-6) was a Kearsarge-class battleship launched 24 March 1898, sailed with the Great White Fleet and sold for scrapping 23 January 1924
USS Kentucky (BB-66) was an Iowa-class battleship under construction in 1947 when her contract was canceled
USS Kentucky (SSBN-737) is an Ohio-class submarine commissioned in 1991 and currently in active service
