When it comes to moving giant structures, few moves are as impressive as those that take place at sea. These types of moves require a unique set of techniques and tools as well as careful, detailed planning. In Canada, a team of engineers will attempt to move a gigantic 702-ton ship-loading device from the coast of Vancouver to a small mining island 70 miles away. Meanwhile, off the coast of Virginia, Mega Movers will try to save an endangered island house by loading the entire structure onto a barge and sailing 5 miles to the mainland. But there is little margin for error in this chaotic environment, requiring all of the skill and ingenuity that the movers can muster.