The effect of axial stiffness of mooring lines on the horizontal motion of FDPSO

Abstract

FDPSO is a multifunction floating platform, which has the integral function of drilling, production, storage and offloading. A spread mooring system is adopted to position the FDPSO. The coupled analysis in time domain for FDPSO system is conducted in the present paper, using the code DeepC. The effect of axial stiffness of the mooring line on the horizontal motion of FDPSO is studied by employing five types of different axial stiffness in the calculation of the motion response of FDPSO vessel. Furthermore, the results of a model test conducted in the State Key Laboratory of Ocean Engineering in Shanghai Jiao Tong University are used to investigate the feasibility of the numerical method.