TENDON-BASED FLOATING STRUCTURE

摘要

A floating offshore structure has a buoyant hull with sufficient fixed ballast to place the center of gravity of the floating structure below the center of buoyancy of the hull. A support structure coupled to an upper end of the hull supports and elevates a superstructure above the water surface. A soft tendon is attached between the hull and the seafloor. A vertical stiffness of the soft tendon results in the floating structure having a heave natural period of at least twenty seconds.