The Australian Antarctic Division has rescheduled its early season voyages with the icebreaker Aurora Australis delayed in heavy ice conditions off the Antarctic coast. The ship is in heavy ice about 180 nautical miles off Davis station, returning from resupplying the station and delivering summer personnel. Radar satellite images this morning indicated that while there may be some useful openings, the sea ice extends to approximately 60 nautical miles around the ship. Beyond that, less concentrated ice will be easier to navigate. Australian Antarctic Division Director, Dr.