SYMBOLS AND DEFINITIONS— Continued 



d chain or joint pin diameter (feet) 

 •water depth (feet) 



d ■ mass point of floating body (diraensionless) 



d submergence of orifice (feet) 

 •water depth (feet) 

 •width of double pontoon floating system (feet) 



d depth of submergence (feet) 



ETC(f) energy transmission coefficient in frequency domain (dimensionless) 



e distance load is applied to pile above bottom (feet) 



F anchor force per foot of structure (pounds per foot) 

 •applied force (pounds) 

 •mooring line force (pounds) 



F Q (f) drag force in frequency domain (pounds) 



F. damping force (pounds) 



F- line force spectrum (pounds) 



F maximum probable force (pounds) 



F maximum instantaneous mooring force (pounds) 



F periodic forcing function (pounds) 



F factor of safety (dimensionless) 



F t lateral mooring line peakload (pounds) 



F(t) excitation as a function of time 



F (i) ith mooring line effect on sway (pounds) 



F (i) ith mooring line effect on heave (pounds) 



F , F force in mooring line (pounds) 



F(o)j) incident force spectrum (pounds per secoud squared) 



f incident wave frequency (one per second) 

 f force in breakwater mooring line (pounds) 



fp peak energy frequency (one per second) 



f t force due to total reflection from vertical wall (pounds) 

 max 



G structure center of gravity (dimensionless) 

 GM height of metacenter (feet) 



17 



