Breakwater 



X\\\\\\\\\\V^^^\\\\S\^V\^^^ ^^^^ 



b| Lines of Equal Diffraction Coefficient (k') 



Wave Crests 



Over-oil retroction- diffraction coefficient is given 



by (Kr) (k') A/b^TTj 

 Where Kp^Refroction coefficient to breakwater. 

 K' ^Diffraction coefficient ot point on 

 diffracted wave crest from which 

 orthogonolis drawn. 

 b^Orthogonal spocing at diffracted wove 



crest 

 b =Orthogonol spacing nearer shore. 



Figure 2-59. Single Breakwater - Refraction - Diffraction Combined 



2-III 



