江海直达船船型设计的特点

由于江海直达船在珠江水系有巨大的发展潜力,而这种船要跨江、海两个不同航区航行,应作为珠江水系的一种新的特殊船型来研究．针对这种需要,本文较系统地阐明与之有关的“分段原理”,河道及海区对船舶性能的要求等在船型设计方面的特点．

HULL FORM DESIGN FEATURES OF SEA-RIVER-THROUGH SHIPS

it is necessary to study the hull form design features of Sea-Riverthrough ships(S -R ships) as an independent type of ship used in Pearl River area. For S -R ships the design method of separability Principle can be used. The bow should be designed to attain the least wave breaking resistance due to "necklace vortex". The twin skeg stern is often used as it can combine the shallow draft with good propulsive quality. Attention should be paid to the balance between fore and afterbody and the transition regions of both parts connecting with the parallel midbody. Since S -R ships navigating in both a riverway and a seaway, the shallow water effect and wave effect should be considered to obtain a good performance.