WOAA47 NZKL 182017 ICE ACCRETION WARNING 413 THIS AFFECTS OCEAN AREA: SOUTHERN AT 181800UTC OVER WATERS NORTH OF ICE EDGE. IN AN AREA BOUNDED BY 66S 179W 66S 161W 66S 139W 70S 135W 70S 172E 66S 179W: HEAVY ICE ACCRETION. ICE ACCRETION AREA MOVING EAST 5KT. THIS WARNING CANCELS AND REPLACES WARNING 405.=