$Benef its 



$D 



$L 

 $L' 



$Total 

 $/Vol 



Natural angle of repose of armor material 



Wave angle 



A parameter of the Extremal Type I and Weibull probability 

 distribution 



Wet incremental benefits 



Total incremental benefits 



Cost of breakwater repair 



Construction cost 



Economic losses due to wave attack 



Economic losses due to attack by transmitted waves 



Maximum conceivable economic losses due to wave attack 



Total incremental project feature (breakwater) cost, including 

 associated economic losses 



Percent of breakwater armor displaced 



A critical value of breakwater damage by displacement 



Cost per unit volume per unit breakwater trunk length 



E3 



