Watch Mega Movers online: Episode 7 Ships Moving Ships

Suppose the world's largest aircraft carrier, the 1,092 feet USS Ronald Reagan, came under enemy attack and was crippled at sea. There's not a ship big enough to rescue it and move it back to the U.S. for repairs. Watch as engineering theorists design and build the largest heavy-lift submersible vessel ever to lift it out of the water and haul it halfway across the world. Then, as war rages in the Middle East, the U.S. Naval fleet is at increasing danger of being destroyed by enemy deep-sea mines. Orders are issued to move a 224-foot long, 1,300-ton minesweeper halfway around the world. It's a job that can only be done by using an enormous heavy-lift ship to move this mighty war ship.

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