• • Increasing water depth from baseline conditions suppresses oscillatory motion response, with heave and pitch amplitudes decreasing by up to 30% at greater depths, which is critical for deep-sea deployment where wave energy spectra shift to lower frequencies.
• • Increasing draft amplifies surge and pitch responses by approximately 15-20% per 0.05 m draft increment, while reducing heave response by 10-15%, necessitating careful ballast tuning to balance motion modes in operational sea states.
• • Increasing anchor distance enhances heave and pitch motions by 12-18% but reduces surge motion during the slow-drift phase by up to 25%, offering a design lever to mitigate low-frequency drift without compromising mooring tension limits.
• • The taut mooring system with steel strand lines (breaking force 1670 N, tensile stiffness 0.378 MN) maintains structural integrity under tested wave conditions (wave height 0.02 m, period 0.4-5.0 s), demonstrating feasibility for 1:100 scale validation of deep-sea floating wind turbines.