Sydney: The Australian authorities expressed relief on Friday after 52 passengers were safely evacuated by helicopter from a Russian ship stranded in Antarctica, but then raised concern for a Chinese rescue vessel caught in heavy ice.
Officials tasked with freeing the scientific expedition on the Akademik Shokalskiy, which has been stuck since December 24, succeeded in flying them out yesterday in an on-off rescue operation.
A helicopter from Chinese icebreaker Xue Long used a makeshift landing pad next to the marooned ship and ferried the scientists, tourists and journalists to an Australian government supply vessel, the Aurora Australis.
But it emerged later today that the Chinese ship, which has not moved much for several days, may itself be trapped by thick ice, the Australian Maritime Safety Authority (AMSA) said.
"Xue Long notified AMSA at 1pm AEDT (0200 GMT) this afternoon it has concerns about their ability to move through heavy ice in the area," it said.
"The Aurora Australis has been placed on standby by the Australian Maritime Safety Authority`s Rescue Coordination Centre Australia to remain in open water in the area as a precautionary measure."
AMSA said the Chinese ship would attempt to manoeuvre through the ice when tidal conditions are most suitable during the early hours tomorrow, adding there was no immediate danger to those onboard.
The rescue mission has been beset by extreme conditions from the start, with the Xue Long and Aurora Australis both unable to break through the ice to free to stranded Russian ship, despite several attempts.
Rain, snow and wind had also delayed the helicopter flights to the vessel ice-bound 100 nautical miles east of the French base Dumont d`Urville.
"This one was quite difficult to do," said John Young, general manager of the Australian Maritime Safety Authority`s emergency response division, of the rescue.
"All Antarctic operations are difficult just because of the nature of the place and in this particular case the movement of the ice and the changing of the weather introduced their own complications.”
"The protracted nature of operations in Antarctica and the difficulty of getting good weather windows, and getting the right ice conditions, really make life very difficult."
Passengers on the stranded Russia ship were transferred to the Aurora Australis -- the Australian Antarctic Division`s supply ship -- and had been heading slowly to Casey station.
They were transferred, using the Chinese icebreaker Xue Long`s helicopter, from the Russian ship to an ice floe near the Aurora Australis over four flights across about 14 nautical miles yesterday.
