40cm 



he = 66 cm 



0.5 



1.0 m 



BW3 



Figure A-3. Breakwater 3 cross section. 



BW3 has an armor two units thick of angular stone. A moderate amount of 

 fitting was used in placing the armor, especially near the crest. Core material 

 was placed by dumping. 



B=40cm 



hs - 66 cm 



54-cm-High Plote 



0.5 



.0 m 



BW3W 



Figure A-4 . Breakwater 3W cross section. 



BW3W is similar to BW3, except that a 5-millimeter-thick metal plate was 

 installed in the center of the structure. The caulked plate extended from 

 the bottom to within one armor unit of the crest (54 centimeters high) . 



69 



