Grand Award Winner: Dockwise Vanguard

The Largest Semisubmersible Courtesy Dockwise

When a battleship needs repairs in the middle of the ocean, a semisubmersible vessel like the Dockwise Vanguard can provide offshore dry dock. The 902-foot-long and 230-foot-wide bowless Vanguard—the largest craft of its kind by nearly a football field—can submerge its deck below the waterline and move its above-water towers aside, allowing mammoth marine vessels to float aboard before the Vanguard rides back up underneath them. The Vanguard can carry 121,254 tons of cargo and another 7,716 tons of food, fuel, and supplies; that’s almost double the payload of any such craft before it.