  LNM42/73-- MARYLAND-CHESAPEAKE BAY-CHESAPEAKE CHANNEL-WRECK INFORMATION; A 25-FOOT BOAT HAS BEEN REPORTED SUNK AND ABANDONED OFF CALVERT CLIFF POWER PLANT, COVE POINT, MD IN APPROX. POSITION LAT. 38-25-30N, LONG. 76-25-00W.  MARINERS ARE ADVISED TO EXE