Vertical 



Thin-Wall Breakwater 



a = l,8 P = 0. 



B^o 



Vertical -Wall 



Breakwater 



a = 2,2 /3=0.4 



Composite 



Breakwater 

 B-ds 

 dwAds=0.3 a-2.Z /S = O.I 

 dw/ds=05 a-Z.Z I3-O.Z5 

 dw/ds=0.7 a = 2.2 /3 = 0.35 



B^dc 



2 



Figure 1. Definition of terms and symbols. 



