  LNM47/71--CGD7;  PROVIDES THE FOLLOWING INFORMATION:  AN OBSTRUCTION HAS BEEN REPORTED 100 YARDS, 162 DEGREES FROM THE CHARTED POSITION OF WINYAH BAY LIGHTED BELL BUOY 2WB (LLNR 14).  THE OBSTRUCTION HAS ABOUT 20 FEET OF WATER OVER IT AND MAY BE A SUNK