BREAKWATER MUST 

 LIE IN THIS ZONE 



LOCATE TIP OF - ^ 

 BREAKWATER HERE/' 



10 



i i 



SCALE OF VALUES 

 OF X/ AND Y, 



HEIGHT OF DIFFRACTED WAVE 

 HEIGHT OF INCIDENT WAVE 



/ 



WAVE DIFFRACTION BEHIND A VERTICAL IMPERMEABLE BREAKWATER 



18 



FIG. 7 



