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- W585874125 abstract "In this paper the roll characteristics of a small hard-chine craft whose length between perpendiculars is smaller than 12m are experimentally investigated. Three kinds of craft are chosen to measure roll damping, wave exciting forces and ship motions in regular beam seas. Through measuring the roll damping moment, it is confirmed that the roll damping can be predicted accurately using a potential flow theory for the wave component and the prediction method for the viscous component proposed by one of the authors. The wave exciting moment acting on the hull in beam seas are measured in two ways, the first by measurement of the roll moment acting on a fixed model in waves and the second by that acting on it in free condition of sway and heave motions in waves. The agreements between the measured exciting moment by the first method and the method calculated depend on the hull shape of a craft. The measurements by the second method are much smaller than the calculated Froude-Krylov force. From the comparison between calculated and measured roll resonant angle, it is found that the calculated roll resonant angle by OSM can be much larger than the experimental one and that the difference is caused by the error in the prediction of the cross-couping moments from sway to roll in addition to the disagreement in the wave exciting roll moment and sway force." @default.
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- W585874125 date "1992-01-01" @default.
- W585874125 modified "2023-09-27" @default.
- W585874125 title "A STUDY ON ROLL CHARACTERISTICS OF A HARD-CHINE CRAFT" @default.
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