USS KEARSARGE (LHD 3) is the fourth ship in the history of the U.S. Navy named for Kearsarge Mountain in New Hampshire. Previous ships named KEARSARGE include a Civil War-era sloop of war famous for defeating CSS ALABAMA; a turn-of-the-century battleship that sailed as part of President Theodore Roosevelt's "Great White Fleet;" and an aircraft carrier, known internationally for its part in the Project Mercury space program. KEARSARGE is only one of two United States ship names mandated by Congress to be used more than once.
http://www.kearsarge.navy.mil/History.htm
What's the other?