WOAA47 NZKL 151844 ICE ACCRETION WARNING 284 THIS AFFECTS OCEAN AREA: SOUTHERN AT 151800UTC OVER WATERS NORTH OF ICE EDGE. IN AN AREA BOUNDED BY 60S 137W 60S 124W 68S 115W 65S 137W 60S 137W: HEAVY ICE ACCRETION. ICE ACCRETION AREA MOVING EAST 10KT. THIS WARNING CANCELS AND REPLACES WARNING 280.=