30 



2.0 



Fn =0 



Heave 



o(3-dimension1 

 a^2-clinDension] 



Ratios of Kim ond HavekxkN 

 are corrected so that they 

 become unit when ar,-»<x) / 



Pitch 



A(3-dimensionol) 



A(2-dimensional) 



Hovelock( Sphere) 



caf=-^L 



' g 



Figure 13 

 Three-dimensional Effect (Added Mass) 



77 



