Experimental Study on the Configuration Hydrodynamics of Trimaran Ships

Abstract This paper presents experimental results on configuration hydrodynamics. Three models are used in the model tests, which typical of hard, round, and soft chines. Although specific values different, influence patterns similar three ship models. A set different outrigger positions is investigated calm water regular waves. variety interesting phenomena observed, among splash resistance dominant component for a trimaran at high speeds (with Froude number Fr > 0.6). If two small outriggers placed inside Kelvin’s wave systems main hull, strong appears, resulting significant increase. Moreover, short long waves cannot be neglected, they may excite motions much smaller outriggers. condition leads to non-vanishing heaving high-frequency non-normalized pitches low frequencies. Based spectra optimum configurations resistance, longitudinal motions, transverse presented. These reveal hull terms hydrodynamic performance, thus providing very powerful tool design ships.