Influence of Designed Waterline and Frameline Forms on Wave-Making Characteristics of Ships (The Second Report)

Abstract

This paper is the second report on the subject that the authors studied and reported at the Society in 1966. The previous paper deals with the tank experiments of three symmetrical models, UU-, VU- and VV-types, all of which are derived from a certain prescribed sectional area curve with block coefficient CB=0.55. The present paper deals with the further symmetrical models, newly envisaged, UU- and ∧U-types, under the same configuration with block coefficient CB=0.52.The main object of this second report is to appraise the validity and usefulness of the slender ship theory which is to be applied to the preliminary stage of the hull form design procedure, i. e., the determination of the sectional area curve. The effectiveness of the so-called “Pienoid” method is also verified concerning the final stage of the determination of the detailed hull form characteristics such as the waterline-and frameline-forms.In this connection, the authors prepared some mathematical tables to be applied to the slender ship theory calculation of the wave-making resistance.