中文摘要：

台风是南海海域影响超大型油船VLCC航行安全的主要灾害性天气,实现安全、科学、有效地避台对保障VLCC航行安全具有重要的研究意义.在台风浪数值模拟和船舶失速计算的基础上,建立了安全约束条件下航时最短为优化目标的航线优化模型,设计动态规划算法求解全局最优的优化路径,以某VLCC规避2014年第9号台风＂威马逊＂为例进行了仿真,并运用国际海事组织（IMO）推荐的指南分析了优化航线的安全性.结果表明,提出的航线优化模型达到了安全和航时最短等设定的优化目标,航线安全性分析结果表明,发生谐摇和大幅度横摇的风险主要集中在避台后,不会对船舶航行安全构成威胁.

英文摘要：

Typhoon is the major weather disaster which affects the navigation safety of VLCC in the South China Sea. The important significance is considered for avoiding the typhoon safely and effi- ciently to ensure the navigation safety of VLCC. On the basis of typhoon wave numerical simulation and ship speed loss calculation, the ship route optimization model is established for minimum time route under safety constraints, which is solved by the dynamic programming algorithm for global opti- mization. Typhoon ＂Rammasun＂ （No. 1409） is chosen as an example for the simulation. The recom- mended guidelines of the International Maritime Organization （IMO） are used to analyze the safety of the optimized route. The results show that the proposed route optimization model achieves the goal of safety and minimum time of the ship route. The safety analysis shows that the risk of synchronous rolling and parametric rolling motions is concentrated in the area after avoiding typhoon, so it will not pose a threat to the navigation safety.