It is of great importance to evaluate the hull structural vibrations response of large ships in extreme seas.Studies of hydroelastic response of an ultra large DisplayPort to HDMI Type A ship have been conducted with comparative verification between experimental and numerical methods in order to estimate the wave loads response considering hull vibration and water impact.A segmented self-propelling model with steel backbone system was elaborately designed and the experiments were performed in a tank.Time domain numerical simulations of the ship were carried out by using three-dimensional nonlinear hydroelasticity #10 Star Washer theory.The results from the computational analyses have been correlated with those from model tests.