The U.S. Coast Guard rescued a 51-year-old Jay White aboard a liferaft Tuesday after the man abandoned his 28-foot sailboat, Dove, 20 miles south of Atlantic Beach, N.C. White contacted Coast Guard Sector North Carolina Command Center watchstanders at approximately 7:15 a.m. via a mayday call on a VHF-FM marine radio stating that his boat was taking on water. Sector North Carolina watchstanders issued an urgent marine information broadcast and dispatched crews aboard a 47-foot Motor Life Boat from Coast Guard Station Fort Macon…