LAND 

 Original Beacii Line 



Shore Line at Point of Maximum 

 Recession 



Stabilized Shore Line 



1-Direction of Littoral Drift 



^ / 



Orthogonal 



WATER 



Direction of Net Wave Approach 



FIGURE 62. GROIN FIELD OPERATION 



Groin- 



Groin 



Orthogonals 



FIGURE 63. GROIN FIELD OPERATION WITH REVERSAL OF DRIFT 



84 



