MEASUREMENTS OF THE MEAN LATERAL FORCE AND YAWING MOMENT ON A SERIES 60 MODEL IN OBLIQUE REGULAR WAVES

Abstract : This report describes measurements of the mean lateral force and yawing moment exerted by oblique regular waves on a free-to-oscillate Series 60, 0.60 block coefficient model. It also presents measurements made of the lateral force and moment on the same model towed in calm water at various yaw angles. The possibility of using these data to predict the leeway angle for a free model in oblique waves is investigated, and it is shown that such a procedure may lead to errors, especially in the case of short wavelengths.