Author(s)

Y. Yoshida

Abstract

Optimum Design of a Planing Boat's Hull Form Y. Yoshida International Boat Research, 1-2-1-104, Fukuei, Ichikawa City, Chiba fr<^ 272-07 J7J(%xm concurring Tokyo Industrial Technical College of Tsuzuki University Group, 24-5, Sakuragaoka-cho, Shibu-ya-ku 150-0031 Toyko Japan Abstract This paper is concerned with an approach to obtain the minimum resistance hull form parameter set \ (X\, X-± .........., %,,) to a planing boat model from many towing test data. About ten X- s, which are necessary to form a hull, have been transformed into the dimensionless numbers for the law of similarity. Total resistance coefficient at a planing condition is selected as objective function and its minimum is searched under restrictive conditions. X^ 's correlations in a hull form, X^ being within experimental data and near their mean values, and other requirements are taken into the conditions. Penalty terms are added to make modified objective function. The terms which are made from the abov

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