\\VV\V\\\\\V\\ V\\\\\\V\\V\\\\\\V^^^^ 



b I Lines of Equal Diffroction Coefficient (K ) 



Wove Crests 



Overoll refraction- diffraction coefficient is given 

 by (Kb) (k') Vby b^ 

 Where K)( = Refraction coefficient to Breakwater 

 K' =Oiffroclion coefficient at point on 

 diffracted wove crest from which 

 orfhoqonalis drown 

 b =Orthogonal spocing at diffrocted wove 



cresl. 

 b =Orthogonol spacing neorer shore. 



Figure 2-61. Single breakwater, refraction-diffraction combined. 



2-110 



