Study of Maritime Affairs and Shipbuilding Technology in the History of China-Japan Cross-Cultural Exchange from the Standpoint of Engineering

对14 ~ 19世纪中日贸易的船体型进行了调查，并结合近代海军建筑技术，选取了一艘琉球贡船进行了工程研究。详细的船体形状是根据九州国立博物馆的展示模型开发的。通过模型试验和理论计算，定量地阐明了船舶的阻力、推进、操纵性和在波浪中的运动等性能。计算结果还为东海航行提供了风浪限制标准。这一研究成果与人文学科研究成果的交流，为船舶在中日海洋文化交流中的作用提供了新的可能性。

The ship hull forms engaged in China- Japan trade during 14 to 19 centuries were surveyed, and a Ryukyuan tribute ship was selected for the engineering study in view of modern naval architectural technology. Detail hull shape was developed from a display model of Kyusyu National Museum. Wide variety of the ship performance such as resistance, propulsion, maneuverability and motion in waves was clarified quantitatively by means of model tests and theoretical calculations. The results have also indicated some limiting criteria of wind and wave for the voyage at East China Sea. The exchange of the study results with those of the research in humanities has shown a possibility of new aspects in the role of ships for the maritime cultural exchange between China and Japan.