Buchanan was decommissioned on 1 October 1991 , stricken from the Naval Vessel Register on 20 November 1992 .
Buchanan was sunk as a target off Hawaii on 14 June 2000 .
Buchanan was decommissioned on 1 October 1991 , stricken from the Naval Vessel Register on 20 November 1992 and sunk as a target off Hawaii on 14 June 2000 .