Story by the Associated Press; curated by Dave Urbanski

CANBERRA, Australia (AP) — The latest attempt to rescue passengers on board a research ship that has been trapped in Antarctic ice for more than a week was delayed again Thursday after sea ice prevented a barge from reaching one of the rescue vessels.

The Australian Maritime Safety Authority’s Rescue Coordination Centre, which is handling the operation, said earlier on Thursday that weather conditions had improved and rescue flights were expected to commence. A helicopter was expected to airlift passengers to a Chinese icebreaker, the Snow Dragon, and a barge would then ferry them to a nearby Australian vessel.

But before the rescue operation could begin, sea ice had blocked the path of the barge that needed to make it from the Australian vessel, the Aurora Australis, to the Snow Dragon. Because the Aurora isn’t built to handle a helicopter landing, it appeared unlikely that the passengers would be rescued Thursday, the maritime authority said.

“This rescue is a complex operation involving a number of steps. Operations in Antarctica are all weather and ice dependent and conditions can change rapidly,” the agency said in a statement.

52 ShipPassengers Trapped in Antarctic Ice to be Rescued by Helicopter

Russian ship MV Akademik Shokalskiy is trapped in thick Antarctic ice 1,500 nautical miles south of Hobart, Australia, Friday, Dec. 27, 2013. The research ship, with 74 scientists, tourists and crew on board, has been on a research expedition to Antarctica, when it got stuck Tuesday after a blizzard’s whipping winds pushed the sea ice around the ship, freezing it in place. (Image source: AP/Australasian Antarctic Expedition/Footloose Fotography, Andrew Peacock)

52 ShipPassengers Trapped in Antarctic Ice to be Rescued by Helicopter

Russian ship MV Akademik Shokalskiy is trapped in thick Antarctic ice 1,500 nautical miles south of Hobart, Australia, Friday, Dec. 27, 2013. (Image source: AP/Australasian Antarctic Expedition/Footloose Fotography, Andrew Peacock)

The rescue operation for the 74 scientists, tourists and crew on the Russian ship MV Akademik Shokalskiy has been plagued by one delay after another since the vessel became stuck on Christmas Eve. Three icebreakers were initially dispatched to try and crack their way through the thick ice surrounding the ship, but all failed. The Aurora came within 12 miles of the ship Monday, but fierce winds and snow forced it to retreat to open water.

Officials had been planning on Thursday to use a helicopter on board the Snow Dragon — which is waiting at the edge of the ice pack with the Aurora — to rescue 52 scientists and tourists, a dozen at a time, over five hours. All 22 crew members are expected to stay with their icebound vessel, which is not in danger.

The passengers were then supposed to be flown 7 miles to the Chinese ship, from where they would be transported 2 miles by barge to the Australian icebreaker. They were then expected to travel to the Australian island state of Tasmania, arriving by mid-January.

Earlier Thursday, it appeared likely the rescue would go ahead, with expedition leader Chris Turney posting a video on his Twitter account, blue sky visible behind him.

“A stunning day,” he said on the video. “Hopefully we’ll hear about the evacuation soon.”

The Akademik Shokalskiy, which left New Zealand on Nov. 28, got stuck Christmas Eve after a blizzard pushed the sea ice around the ship, freezing it in place about 1,700 miles south of Hobart, Tasmania. The ship isn’t in danger of sinking and has weeks’ worth of supplies on board, but it cannot move.

The scientific team on board had been recreating Australian explorer Douglas Mawson’s 1911 to 1913 voyage to Antarctica. Turney had hoped to continue the trip if an icebreaker managed to free the ship.

Original story below

CANBERRA, Australia (AP) — Passengers on board a research ship that has been trapped in Antarctic ice for more than a week are expected to be rescued by helicopter within hours.

The Australian Maritime Safety Authority’s Rescue Coordination Centre said early Thursday that weather conditions had improved in the area since Wednesday and rescue operations were likely to commence shortly.

The 74 scientists, tourists and crew are on the Russian ship MV Akademik Shokalskiy, which has been stuck since Christmas Eve.

The center said the helicopter on board the Chinese-flagged vessel Snow Dragon will be used to rescue 52 scientists and tourists, a dozen at a time. All 22 crew members are expected to stay with their icebound vessel, which is not in danger.

You may recall that Snow Dragon made more than a few headlines when the icebreaker ship was unable to complete its planned rescue Friday because the ice was too thick, forcing officials to call off the mission.

According to Fox News, the Australian Maritime Safety Authority said Snow Dragon came within six nautical miles from the Russian vessel but couldn’t move further; Zhao Yanping, second captain of the Snow Dragon, told CNN the ship was not technically stuck, just not advancing forward because of ice up to 10-feet thick.

Here’s a report from the Chicago Tribune: