Distribution of Hydrodynamic Forces on a Shipmodel 



The added mass distribution, as shown in Fig. 7, changes very little with 

 forward speed but there is a shift forward of the distribution curve for increas- 

 ing frequencies. 



Negative values for the cross-sectional added mass are found for the bow 

 sections at low frequencies. For higher frequencies the influence of frequency 

 becomes very small. 



Table 4 



Added Mass Cross- Coupling Coefficients 



for the Sections and the Whole Model 



kg sec 2 



Fn = 0.15 



233 



