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S04 Episode 1
MV Beluga Bremen
1 h 0 mins · Wed, 9 Mar 2011
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S04 Episode 2
USNS Robert E. Peary
1 h 0 mins · Wed, 23 Mar 2011
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S04 Episode 3
DSV Skandi Arctic
1 h 0 mins · Wed, 30 Mar 2011
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S04 Episode 4
MS Stena Britannica
1 h 0 mins · Wed, 6 Apr 2011
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S04 Episode 5
USCGC Bertholf
1 h 0 mins · Wed, 13 Apr 2011
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S04 Episode 6
CCGS Amundsen
1 h 0 mins · Wed, 20 Apr 2011