  NM12/60--3/19/60;  DANGER AREA - A PALLET CONTAINING HIGH EXPLOSIVES IN TRANSPORT BOXES HAS BEEN REPORTED TO HAVE SUNK ABOUT 4,000 YARDS, 272°30' FROM YORK SPIT LIGHT.  THE POSITION IS MARKED BY THREE RED ELLIPTICAL FLOATS SPREAD OVER AN AREA OF 15 FEE