WOAA47 NZKL 281200 ICE ACCRETION WARNING 550 THIS AFFECTS OCEAN AREA: SOUTHERN AT 281200UTC OVER WATERS EAST OF WESTERN BOUNDARY AND NORTH OF ICE EDGE. IN AN AREA BOUNDED BY 61S 160E 63S 171E 63S 160E 61S 160E: HEAVY ICE ACCRETION DEVELOPING NEXT 6 HOURS. ICE ACCRETION AREA THEN SLOW MOVING. THIS WARNING CANCELS AND REPLACES WARNING 544.=