Taking a T300k VLCC oil tanker as the research object, the ship route estimation model with minimum fuel consumption, CO₂ emissions and shortest ETA as the objective function is established, which considers the weather conditions and constraints of the main engine rated power and safety comprehensively. On the basis of model verification, combined with the weather forecast data and the current maritime market conditions, the estimation indicators were analyzed. The research results show that, prefabricated Route 1 and 2 were the shortest ETA and the minimum fuel consumption routes respectively, although the prefabricated Route 1 saved 36.58 h compared with the prefabricated Route 2, the fuel consumption and CO₂ emissions of the prefabricated Route 2 were reduced by 0.94 t/h and 2.92 t/h, and under the shortest ETA objective function, if keeping the initial speed, the main engine would be limited by rated power when the ship encounters Beaufort number≥4 headwind or bow wind. Accordingly, the ship route estimation method comprehensively considering weather conditions and constraints can analyze the variation rules of the fuel consumption, speed loss, CO₂ emissions and costs of multiple prefabricated routes under different objective functions, which can provide decision support for shipping companies to improve operation economy.

以T300k VLCC型油轮为研究对象，建立了以油耗最小，CO ₂排放量和ETA最短为目标函数的航路估计模型，综合考虑了天气情况和主机额定功率，安全性的制约因素。 。在模型验证的基础上，结合天气预报数据和当前的海上市场状况，分析了估计指标。研究结果表明，预制路线1和2分别是最短的ETA路线和最少的燃料消耗路线，尽管预制路线1与预制路线2相比节省了36.58 h，但燃料消耗和CO ₂预制路线2的排放量分别减少了0.94 t / h和2.92 t / h，并且在最短的ETA目标函数下，如果保持初始速度，则当船舶遇到Beaufort数≥4时，主机将受到额定功率的限制。逆风或弓风。因此，综合考虑天气条件和约束条件的船舶航线估计方法，可以分析不同目标函数下多条预制航线的油耗，速度损失，CO ₂排放和成本的变化规律，为船公司改进决策提供支持。运营经济。