WOAA47 NZKL 281818 ICE ACCRETION WARNING 554 THIS AFFECTS OCEAN AREA: SOUTHERN AT 281800UTC OVER WATERS EAST OF WESTERN BOUNDARY AND NORTH OF ICE EDGE. IN AN AREA BOUNDED BY 61S 160E 62S 172E 65S 175E 65S 160E 61S 160E: HEAVY ICE ACCRETION. ICE ACCRETION AREA SLOW MOVING. THIS WARNING CANCELS AND REPLACES WARNING 551.