船舶纵向 meaning in English

fore and aft bridge

Salvesen - tuck - faltinsen method
福船舶纵向运动估算法
Ship launching is the key procedure during ship building , most coastal shipyard adopt longitudinal gravity launching method , the existing method for calculating ship launching include regular hydrostatic method and elastic calculation of ship launching
船舶下水是船舶建造过程中一个重要环节，我国沿海大、中型船厂大都采用船舶纵向重力式下水这种下水方式，现有的计算方法主要有：传统的静力学计算方法和弹性计算方法。
In order to resolve the strength problem of 74500dwt bulk carrier on launching way , two aspects of problem are investigated in this report : 1 ) the analysis and calculation of the force act on the hull and the launching way when ship launching ; 2 ) the strength analysis and calculation of bottom structure in forward area during ship launching
为了解决74500吨散货船下水时船体结构的强度问题，本文主要对两方面的内容进行了研究： 1 )船舶纵向下水时的受力分析和滑道反力计算： 2 )艉浮时艏部区域底部结构强度分析计算。