Wave structure interaction is a fundamental aspect of offshore engineering, as floating platforms and vessels are continuously subjected to dynamic ocean environments. Using CFD and numerical wave tank, it can be simulated, how waves impact floating bodies such as spars, semi‑submersibles, FPSOs, and offshore wind turbines. Hydrodynamic forces including waves induced added mass, damping, and excitation forces that govern the motion response of floating structures are obtained. Simulations capture surge, sway, heave, roll, pitch, and yaw motions under regular and irregular sea states.