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Wind damping: frictional damping between semisub and air |
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Viscous flow damping : damping due to motions of semisub in water |
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Wave drift damping |
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Viscous drag and eddy-making forces |
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Hydrodynamic drag damping: due to mooring line oscillations |
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Vortex induced vibrations (line resonant response transverse to flow, not
relevant for chains) |
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Line internal damping: material damping |
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Seabed interaction: soil friction between mooring line and soil |