The Troll A natural-gas platform's concrete gravity-base structure, 472 m tall overall and weighing about 656,000 tonnes, was towed more than 200 km from Vats, Norway, to the Troll field in the North Sea in 1995. It is recognised as the tallest — and among the heaviest — structures ever moved by humans; most of it sits below the waterline in about 303 m of water.
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The Troll A natural-gas platform's concrete gravity-base structure, 472 m tall overall and weighing about 656,000 tonnes, was towed more than 200 km from Vats, Norway, to the Troll field in the North Sea in 1995. It is recognised as the tallest — and among the heaviest — structures ever moved by humans; most of it sits below the waterline in about 303 m of water.
The greatest total height of any structure moved intact across land or sea from its construction site to its final location.
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Permanent ID limitsregistry.com/limits/LR-TALLEST-STRUCTURE-EVER-MOVED-TROLL-A
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Limits Registry. LR-TALLEST-STRUCTURE-EVER-MOVED-TROLL-A. Tallest structure ever moved. 2026.