The hydrodynamic interaction between two large vessels can't be neglected when two large vessels are closed to each other in restricted waterways such as in a harbor or narrow channel. This paper is mainly concerned with the ship maneuvering motion based on the hydrodynamic interaction effects between two large vessels moving each other in curved narrow channel. In this research, the characteristic features of the hydrodynamic interaction forces between two large vessels are described and illustrated, and the effects of velocity ratio and the spacing between two vessels are summarized and discussed. Also, the Inchon outer harbor area through the PALMI island channel in Korea was selected, and the ship maneuvering simulation was carried out to propose an appropriate safe speed and distance between two ships, which is required to avoid sea accident in confined waters. From the inspection of this investigation, it indicates the following result. Under the condition of S P 12 ≤ 0.5 L , it may encounter a dangerous tendency of grounding or collision due to the combined effect of the interaction between ships and external forces. Also considering the interaction and wind effect as a parameter, an overtaken and overtaking vessel in narrow channel can navigate while keeping its own original course under the following conditions; the lateral separation between two ships is about kept at 0.6 times of ship length and 15 degrees of range in maximum rudder angle. On the other hand, two ships while overtaking in curved narrow channel such as Inchon outer harbor in Korea should be navigated under the following conditions; S P 12 is about kept at 1.0 times of ship length and the wind velocity should not be stronger than 10?m/s.
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机译：当两个大型船在受限的水道（如港口或狭窄的航道）中相互关闭时，两个大型船之间的水动力相互作用不可忽略。本文主要基于在弯曲的狭窄通道中相互运动的两艘大船之间的水动力相互作用效应来进行船舶操纵运动。在这项研究中，描述和说明了两个大型容器之间的水动力相互作用力的特征，并总结和讨论了速度比和两个容器之间的间距的影响。此外，选择了通过韩国的PALMI岛通道的仁川外港地区，并进行了船舶操纵仿真，以提出两艘船之间适当的安全速度和距离，这是避免在受限水域发生海上事故所必需的。通过对该调查的检查，得出以下结果。在S P 12≤0.5 L的情况下，由于船舶与外力相互作用的共同作用，可能会发生着陆或碰撞的危险趋势。同样考虑相互作用和风影响作为参数，在以下情况下，窄通道中的超车和超车船只可以导航，同时保持自己的原始航向;两艘船之间的横向距离大约保持在船长的0.6倍，最大舵角在15度范围内。另一方面，在韩国的仁川外港等弯曲的狭窄航道上超车的两艘船应在以下条件下航行; S P 12大约保持在船长的1.0倍，风速不应大于10？m / s。
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