自由表面の撹乱抑制法を取入れた設計コンセプトによる幅広高速船(Fn=.38)船型改良の研究 : 2軸2舵フェリー船型の場合について

抄録

The authors created the concept to restrain the Non-uniform Flow around hull, so as to relieve the wave making Phenomenon on the small L/B vessel. The concept has been applied to the hull of wide breadth high speed vessels (Fn-0.38) with twin propellers and twin rudders. In order to confirm the high speed ability and fuel saving effect of this new type hull forms which are similar to so-called Trimarans, and to clarify the design problems involved, the authors repeated the trial design and tank test, that is, three (3) kind of new hull forms and one (1) ordinary hull form have been tested in circulating water channel with 2m length models, Finally the best performance hull form has been tested in towing tank with 5m length model. As a result, it was confirmed that this new type hull form is expected the speed up of 1.6 knots with same output, or the fuel saving of 38% with same dead weight and same service speed, as compared with the ordinary hull form.