WOAA47 NZKL 300615 ICE ACCRETION WARNING 446 THIS AFFECTS OCEAN AREA: SOUTHERN AT 300600UTC OVER WATERS NORTH OF ICE EDGE. IN AN AREA BOUNDED BY 69S 137W 67S 174E 63S 175E 60S 151W 69S 137W: HEAVY ICE ACCRETION. ICE ACCRETION AREA MOVING EAST 20KT. THIS WARNING CANCELS AND REPLACES WARNING 440.=