SYMBOLS AND DEFINITIONS — Continued 



g gravitational constant (32.174 feet per second squared) 

 H arbitrary wave height (feet) 

 Hj, H- incident wave height (feet) 



(H. ),/, incident significant wave height (feet) 



H maximum wave height (feet) 



H significant wave height (feet) 



H T> H r transmitted wave height (feet) 



h penetration of offset breakwater below waterline (feet) 

 •porous breakwater height (feet) 

 •structure height (feet) 



h penetration of A-frame (feet) 



h freeboard of A-frame (feet) 



I, I moment of inertia (feet^) 



I modified Bessel function (dimensionless) 



K 



dimensionless spring constant 



K Rankine's coefficient of passive earth pressure (dimensionless) 



K restoring force per foot of immersion (pounds per foot) 



K modified Bessel function (dimensionless) 



K radius of gyration (feet) 



k restoring stiffness coefficient (pounds per inch) 

 •spring constant (pounds per foot) 

 •wave number, 2ir/L (one per foot) 



k moment arm of mass point (feet) 



L incident wavelength 

 •wavelength (feet) 



L^ incident wavelength (feet) 



L mQ double pontoon structure width (feet) 



L Q deepwater wavelength (feet) 



L single pontoon structure width (feet) 



T average tube length (feet) 



18 



