Rescuers are expected to take up to five days to a reach 32 people trapped on a Russian fishing vessel taking on water in the freezing Southern Ocean.
The 55m vessel Sparta issued a distress call at around 3am from its position next to an Antarctic ice shelf, in the Ross Sea.
It is sitting on a 13 degree list and is confirmed to be taking on water.
The New Zealand Rescue Coordination Centre this morning said all of the crew, made up of 15 Russians, 16 Indonesians and 1 Ukrainian, were safe.
They were pumping water out of the ship's holds and giving up weight by placing cargo on a nearby ice shelf.