An oceanographer awaiting rescue on a Russian ship trapped in ice off Antarctica said it is a case of "hurry up and wait" on the vessel.
Erik van Sebille said in a video diary, "Everything must be ready to go as soon as possible [in case of a successful rescue attempt], but in the meantime it's a lot of waiting here".
The 74 passengers on the MV Akademik Shokalskiy are pinning their hopes on a helicopter rescue after three icebreakers failed to reach the paralysed vessel.
However, the helicopter must wait for a break in the weather before it can attempt a rescue, and conditions are not expected to improve before tomorrow.
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