Research on Operational Limitations and Operational Guidance for Surf-riding/broaching
The implementation methods of operation restriction and ship operation guide were summa-rized,and aiming at the failure mode of wave riding/yaw stability,based on the second layer fragility criterion,Melnikov method and numerical analysis method were used to solve the single-degree-of-freedom heave equation and the balance equation of thrust and resistance in still water,and the critical speed of wave riding was obtained.The maximum meaningful wave height operation limit,critical speed of stability failure and simplified ship operation guide based on speed and heading combination of ITTC A2 fishing boat and ONR tilting boat were calculated,and the corresponding proportion of re-stricted navigation conditions was obtained,and some decision-making suggestions were put forward to guide the captain in route design and navigation control.