K'=l.2 K'=I.0 



DIRECTION OF . 



K=0.8 



K'=0.6 



I INCIDENT WAVE 



Fig.28 CONTOURS OF EQUAL DIFFRACTION COEFFICIENT 

 GAP WIDTH = 2.50 WAVE LENGTHS {B/L = 2.50) 



H DIRECTION OF ^ 

 T "^ INCIDENT wave' 



,_ Dlffrocted Wove Height 

 Incident Wave Height 



GAP 

 B =2.95L 



K'=I.247 K'=I.2 



K'= I.O 



K=0.8 



Fig. 29 CONTOURS OF EQUAL DIFFRACTION COEFFICIENT 

 GAP WIDTH = 2.95 WAVE LENGTHS (B/L = 2.95) 



DIFFRACTION OF WAVES AT A BREAKWATER GAP 



37 



