Guided Missile Boat

The guided-missile submarine USS Georgia (SSGN 729) transits the Atlantic Intercoastal Waterway to Naval Submarine Base Kings Bay, Ga., Nov. 24, 2008. The vessel is returning to the base following predeployment testing. (DoD photo by Mass Communication Specialist 1st Class Kimberly Clifford, U.S. Navy/Released)

The guided-missile submarine USS Georgia (SSGN 729) transits the Atlantic Intercoastal Waterway to Naval Submarine Base Kings Bay, Ga., Nov. 24, 2008. The vessel is returning to the base following predeployment testing. (DoD photo by Mass Communication Specialist 1st Class Kimberly Clifford, U.S. Navy/Released)

The first four boats of the Ohio-class have been converted to SSGNs. For more info, see this page.