Numerical simulations are performed within the time domain to investigate the dynamic behaviors of an SPAR-type FOWT under wave group conditions. Towards this goal. the OC3 Hywind SPAR-type FOWT is adopted. and a JONSWAP (Joint North Sea Wave Project)-based wave group is generated by the envelope amplitude approach. https://www.roneverhart.com/MagnaFlow-2000-Dodge-Durango-California-Grade-CARB-Compliant-Direct-Fit-Catalytic-Converter/