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Humongous Moves:

Why Dragging a Giant Submarine Onto Land Is Very Risky

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Why Dragging a Giant Submarine Onto Land Is Very Risky

Short | 02:55

Bad weather, high waves, strong wind, poor visibility, or good old-fashioned human error: These are just some of the things that can go wrong when you try to drag a gigantic submarine out of the water.

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The Royal Naval docks of Halifax are cluttered with decommissioned Oberon-class submarines. Once a vital weapon of the Cold War, these O-boats are heading for the scrapyard, all except the HMCS Onondaga, which is destined for a museum 700 miles away, if it can ever get there. Follow a daring team of marine engineers as they attempt to tow this 1,400-ton submarine up Canada's coast in the face of a hurricane, and then haul it over rocky shores and onto a perilously steep railway. It's a massive move, and the stress factor is just as large.

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