Symbol 



Definition 



Dimension 



Example Unit 



Cd 



Cl 

 Cm 



Co 

 en 

 D 



<lg 

 ds 

 df 



dx 



d, 



di, d2 



dso 



Wave velocity; phase velocity 

 •Constant such as 2.2024 (eq. 3-23) 

 •Coefficient such as 1.165 X 10'^ (eq. 3-83) 



Drag Coefficient 



Group velocity 



Lift coefficient 



Mass or inertia coefficient 



Deepwater wave velocity 



Jacobian elliptical cosine function 



Total water depth, includes surge 

 •Depth one wavelength in front of wall 



(eq. 7-76) 

 •Duration of an observation 

 •Decay distance 



•Constant such as 0.8798 (eq. 3-23) 

 •PUe diameter 



•Percent damage to rubble structure 

 (Table 7-7) 



Water depth (bed to SWL) 

 •Grain diameter 



Depth of water at breaking wave 



Equivalent stone diameter (eq. 7-115) 



Water depth at toe of structure 



Average total depth— includes astronomical tide 

 and surge (Table 3-4) 



Water depth (MLW) at specified location 

 (Table 3-4) 



Depth below SWL of rubble foundation crest 

 (Figure 7-99) 



Depths at specified points (including astro- 

 nomical tide and surge) (Table 3^) 



Size in millimeters of 50^^ percentile of sedi- 

 ment sample (dso = M(j) 



L/T 



ft./sec. 



L/T 



L/T 



L 

 T 

 L 



L 

 L 



L 



L 

 L 



ft./sec. 



ft./sec. 



feet 



feet 



sec; hr. 



nautical mile 



feet 



feet 

 millimeters 



feet 



feet 



feet 



feet 



feet 



feet 



feet 



millimeters 



B-2 



