This paper is concerned with the analysis of the dynamic behavior of a tanker, acting as a FPSO, moored through a differentiated compliance anchoring system (DICAS). It is presented, initially, the mathematical models of the moored tanker dynamics, with special consideration on the description of the interaction between waves and current, and the mooring line damping. The mathematical formulation is used to simulate the performance of a 130kDWT tanker in the DICAS configuration. The simulation results are compared with model test data in order to evaluate the accuracy of the models proposed to represent the wave drift and mooring line damping.
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