If all goes as planned, he will shave two days off the current round-the-world balloon record of 13 days and eight hours, set by American Steve Fossett in 2002. Fedor Konyukhov on board his yacht as he pilots it into the Australian port of Albany AFP.
As well as exhaustion, Mr Konyukhov is battling freezing temperatures and ice in his oxygen mask after being blown south into the Antarctic Circle. "It is scary to be so far down south and away from civilization," he wrote on his blog. His son said temperatures outside the gondola dropped to -50C (-58F).
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