WOAA47 NZKL 182016 ICE ACCRETION WARNING 412 THIS AFFECTS OCEAN AREA: SOUTHERN AT 181800UTC OVER WATERS NORTH OF ICE EDGE. IN AN AREA BOUNDED BY 70S 136W 68S 137W 66S 120W 69S 120W 70S 136W: HEAVY ICE ACCRETION. ICE ACCRETION AREA SLOW MOVING. THIS WARNING CANCELS AND REPLACES WARNING 404.=