Research on tsunami disaster reduction at ports by measures for mooring ships

这项研究是为了研究海啸侵袭海湾和沿海地区时船舶灾害的最小化问题。首先，通过AIS(自动识别系统)获取基本的船舶导航和系泊数据，用于海啸袭击后的疏散分析；然后，开发船舶海啸后疏散的船舶模拟程序。结果发现，在比桑塞托地区的大多数船舶都可以通过该程序安全地疏散到避难所。此外，针对船舶进入港口的情况，考虑了代表危险货轮的液化天然气船舶的疏散指南。在船舶开始从进港系泊方向撤离的情况下，可能会遇到第一次海啸事件。然而，在船舶系泊在向外方向并朝向开阔海域的情况下，它很可能克服第一次海啸事件的潜在威胁。此外，我们开发了适用于系泊间和/或连接的船舶在海啸攻击外力下的运动分析程序。使用该系统可以评估那些停泊的船舶是否能够确保海啸袭击。上述程序可以评估在海啸袭击下的几个复杂的舰船情况

This study has been carried out for the investigation of minimization of ship disasters when tsunamis attach bay and coastal areas. First, basic ship navigation and mooring data were obtained by AIS(Automatic Identification System) for the evacuation analysis from the tsunami attack.Then we developed ship simulation programs for ship evacuation from tsunami attack. It is found that most ships in Bisanseto area can evacuate safely to the shelter areas by use of the program.Moreover, evacuation guidelines for an LNG ship, which is representative of a hazardous cargo carrier, were considered for the case of the ship entering the port. It is possible that the ship may encounter the first tsunami event in the case that the ship begins to evacuate from an inbound mooring direction. However, in the case where the ship is moored in the outbound direction and is oriented toward the open ocean, it is likely to overcome the potential threat of the first tsunami event.In addition above, we have developed ship motion analysis programs suitable for inter moored and/or connected ships under tsunami attack external forces. Using this system it is possible to evaluate whether those moored ships can ensure the tsunami attack.Above mentioned programs can evaluate several complex ship situations under tsumai attack