FIELD: shipbuilding.
SUBSTANCE: invention relates to the field of shipbuilding, in particular to buoyant offshore oil and gas extraction structures. Disclosed is a buoyant structure having a hull, a main deck, an upper cylindrical section extending downwardly from the main deck, an upper frustoconical section, a cylindrical neck, a lower frustoconical section which extends from the cylindrical neck, a lower ellipsoidal section, an ellipsoidal keel and a fin-shaped appendage secured to a lower and an outer portion of the exterior of the ellipsoid keel. Upper frustoconical section is located below the upper cylindrical section and maintained to be above the water line for a transport depth and partially below the water line for an operational depth of the buoyant structure.
EFFECT: improved performance of the buoyant structure.
7 cl, 14 dwg
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