The Aasta Hansteen spar is a spar gas platform designed by Technip-USA, currently being built by Hyundai Heavy Industries in South Korea.
Once complete it will be transported on its side on board the Dockwise Vanguard to the Aasta Hansteen gas field 300 km off the coast of Norway. The spar will be tethered north of the Arctic Circle using polyester moorings to the seabed 1300m below.
At a height of 193m (of which 170m will be submerged) and diameter of 50m this will be the biggest spar platform ever built. The spar has an innovative fat belly design allowing gas condensed on the platform to be stored in the beneath sea level.
Reference: Statoilasa / wikipedia
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