An Australian icebreaker is now 11 nautical miles away . It 's not clear yet if it can break through the ice , Australian official said . A Chinese ship ca n't break the ice but is staying nearby in case of helicopter evacuations . Any helicopter rescue of 74 people and scientists on ice will depend on weather .
An Australian icebreaker is now 11 nautical miles away . It 's not clear yet if it can break through the ice , Australian official says . A Chinese ship ca n't break the ice but is staying nearby in case of helicopter evacuations . Any helicopter rescue of 74 tourists and scientists on board will depend on weather .