Free-running model tests were conducted using a scaled model of a large cruise ship with a damaged compartment, to investigate the effects of damage opening and floodwater on the manoeuvring performance in calm water and regular and irregular head waves. Drifting tests in regular beam waves were also performed. The experimental results indicated that the course-keeping ability in waves and turning ability became worse in the damaged condition. However, the target ship retained its manoeuvrability for safe return to the port, on its own, even in a damaged state. As it is time- and cost-consuming to conduct a free-running model experiment, a captive model test was also carried out to develop a system-based simulation model for evaluating the manoeuvrability of large cruise ships after damage.

中文翻译：

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大型游轮受损后的机动性，可安全返回港口

自由航行模型测试是使用一艘大型游艇的受损舱室的比例模型进行的，目的是研究破损开启和洪水对在平静水面和规则和不规则头波中的操纵性能的影响。还进行了常规波束中的漂移测试。实验结果表明，在受损情况下，波浪的航向能力和转向能力变差。但是，目标船即使在损坏的状态下也能保持其机动性，以独自安全返回港口。由于进行自由运行的模型实验既费时又费钱，因此还进行了俘虏模型测试以开发基于系统的仿真模型，以评估大型游轮在受损后的可操纵性。