Tugboats are an integral part of global maritime operations, and can do much more than just pull other vessels around. This is the world's largest tug boat.
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Biggest flying boat in the world is so huge its wingspan is longer than a football pitch
The world's biggest ever flying boat is so massive that its wingspan is longer than some football pitches, but it only flew once. The Hughes H-4 Hercules (best known by its nickname, the Spruce Goose) ...
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