Measurement of wind forces and moments on models of three representative high-speed marine craft

Measurements of wind forces and moments were made on wind tunnel models of a corvette, a fast patrol craft, and a wide-beam planer to establish the correlation factor between model and full scale test results. The results are presented as values of full scale wind forces and moments per sqm/sec/sec. The variation of forces and moments with yaw angle is given. Results for the planer show that the effects of the spray strakes and vertical fenders are not strongly marked except on the longitudinal (X) lateral (Y) forces at angles of yaw between about 60 and 100 deg; the X forces increase and the Y forces decrease upon removal of the strakes.