Next, the character of the knowledge in ship navigation performance design is analysed, the knowledge expression method and saving way in expert system and database are discussed too.
跟着分析了船舶航行性能设计知识的特点，讨论了知识在专家系统和数据库中的表达方法和存储方式；
Navigation performance plays an important part in the strategic decision during the prophase of ship design, it also have far-reaching and overall influence on the quality of ship.
航行性能在船舶设计前期阶段的战略性决策中发挥着重要作用，对船舶的质量有着深远和全局性的影响。
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