On the Stability and Seaworthiness of Bezaisen

Abstract

Bezaisen which was a typical Japanese wooden vessel(Wasen)having a single large sail in Edo Era is so-called Sengoku-Bune and played an active role in cargo transportation. But there were few investigations on the vessel from the technological point of view. Recently, Osaka city has reconstructed Higakikaisen which is a kind of Bezaisen. Based upon that, this paper discusses stability and sea worthiness of Bezaisen by calculating dynamic stability and motion in waves. As a result, loading capability of cargo, stability performance, probability of deck wetness etc.are clarified quantitatively.