A Theoretical Study on High-Speed Ship Hull Forms : Optimization Problem

Abstract

When we design a high-speed ship, it is the most important to reduce her resistance. We must reduce her residual resistance, because it occupies the great part of her total resistance at high speed. Then, how can we desigh her hull form? There are many studies, but there are few papers on the method of reducing them. This report deals with such a method theoretically. As the first step, we think the residual resistance consists of spray resistance, wave-making resistance and head resistance. In their optimization, we think all components shoud be minimum. When we tested in fixed condition, the bow spray was diminished.