This paper presents a verification exercise with three different codes for floating offshore wind turbine modeling: FAST, S4WT and SIMPACK. The comparison showed good agreement in most of the results, and the main differences identified can largely be traced back to the different physical models used by the three simulation softwares. A detailed analysis of the wind turbine loads and motions is also included. FAST offered a greater computational efficiency compared with the other two softwares. Nevertheless, if one is interested in more detailed loads on blades, exact blade deflection predictions in bending and torsion, elastic effects of the floating platform etc., the more detailed codes S4WT and SIMPACK are beneficial.

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