WOAA47 NZKL 231313 ICE ACCRETION WARNING 487 THIS AFFECTS OCEAN AREA: SOUTHERN AT 231200UTC OVER WATERS NORTH OF ICE EDGE. IN AN AREA BOUNDED BY 66S 173W 62S 170W 61S 120W 67S 120W 66S 173W: HEAVY ICE ACCRETION. ICE ACCRETION AREA SLOW MOVING. THIS WARNING CANCELS AND REPLACES WARNING 476.