中文摘要：

讨论了一种高速三体船的快速性综合优化设计问题，在对一型三体船进行系列模型试验的基础上建立了快速性综合优化设计数学模型．采用遗传算法作为优化方法，编制了C＋＋优化计算程序，基于大量的计算，确定了合理的进化代数；得到了快速性指数在傅汝德数Fr为0.32～0.44之间随速度和船长的变化曲线．文中提出的优化方法及计算结果可为高速三体船初步设计提供技术支撑．

英文摘要：

This article discusses a high-speed trimaran rapidity integrated optimization design problem .First are a series of trimaran model tests are carried out , then a mathematical optimization model of the high-speed trimaran is established by using the genetic algorithm , and the C＋＋language is used to program the procedure .The opti-mum steady number of generations is determined;the rapidity index as a function of speed and length of the tri-maran is obtained for Fr between 0.32 and 0.44 ,The optimization method and results of calculation presented in this paper provide a technical support for the preliminary design of high-speed trimarans .