Nonlinear response mathematical model of YUPENG ship

In order to establish a simple mathematical model with high accuracy for the new built YUPENG ship of Dalian Maritime University, this paper adopts the modeling method to establish a nonlinear response mathematical model for YUPENG ship. The turning and the zig-zag tests simulation experiments are carried out on this model, the conformity of simulation overall is about 94.5% in this experiment. Base on this model, the angles of zig-zag tests first and second overshoot are basically identical with the results of real trial, the result of comparison with three similar ships is given and the maneuverability of YUPENG is also evaluated among four ships. Meanwhile, the result of turning tests under full load is also predicted. This paper not only lays the foundation for the further research on the mathematical model of YUPENG, but also has an important significance for ship motion simulation and the design of motion controller.