Gerritsma and Beukelman 



In Fig. 8 it is shown that the distribution of the damping coefficient b de- 

 pends on forward speed and frequency of oscillation. The damping coefficient of 

 the forward part of the shipmodel increases when the speed is increasing. At 

 the same time a decrease of the damping coefficient of the afterbody is noticed. 

 For high frequencies negative values for the cross- sectional damping coeffi- 

 cients are found. 



Table 3 

 Damping Coefficients for the Sections and the Whole Model 



kg sec/m 



232 



