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This paper presents an analysis of motions and loads of an articulated loading platform (ALP) in regular waves, without a tanker moored to it.Evaluation of hydrodynamic loads in the study employs the Newman slender body theory for a spar buoy.With the assumption of pure wave effect and linearity, the pitching motions of the ALP and axial and shear loads at the universal joint have been calculated.An attempt has been made to compare the calculated results with pvailable experiment data which were obtained from model tests in a different sea env ironment, i.e., a combination of noncollinear wind, current and random seas. Thus, the experimental response amplitude operators (RAOs) contain both linear and nonlinear effects. Since the experimental RAOS [7] have been derived?-II-IO Luo

This paper presents a preliminary study of an analysis of motions and loads of an articulated loading platform (ALP) in regular waves, without a tanker moored to it.For the evaluation of the wave-exciting forces and moment, Newman's linear theory of a slender vertical body of revolution has been employed. axial and lateral shear loads at the universal joint have been calculated within the framework of linearization. The pitching motions of the ALP and theAn attempt has been made to compare the analytical results with available experimental data which have been obtained from a model test in a different environmental condition, i.e., a combination of noncollinear wind, current, and random seas; thus, the experimental response amplitude operators (RAOs) will no longer satisfy the linearity law.