Figure 3. Transmitted wave heights versus incident wave height 

 for reef breakwaters, in water depth of 20 ft, exposed to inci- 

 dent wave spectrum with period of peak energy density of 12.0 sec 



Figure 4. Transmitted wave heights versus incident wave height 

 for reef breakwaters, in water depth of 20 ft, exposed to inci- 

 dent wave spectrum with period of peak energy density of 8.0 sec 



10 



