6 7 8 9 10 



Dominant Wave Period (Spectral Peak) (s) 



_J I I I I I I I I 



5 6 7 8 9 10 11 12 13 



Significant Wave Height (ft) 



Figure 120. Estimated number of rows of 5-foot-diameter spheres of tethered- 

 float breakwater required to reduce wave heights of Pierson- 

 Moskowitz spectrum to sea-state 3 (after Jones, 1978). 



175 



