Dagan 
LIST OF SYMBOLS. 
Dotted variables have dimensions; undotted variables are 
dimensionless. 
A amplitude of free waves for downstream. 
Cy coef. of wave resistance. 
DD? wave drag. 
ee complex potential 
i 2 Froude number based on half length 
Fs Froude number based on length 
hi h' submergence of body axis beneath unperturbed level. 
h. submergence of stagnation streamline far upstream. 
qi strength of source located at 2. 
D ik = (x) - x) g/U' dimensionless distance between two sources 
Iu} body length 
i length related to the body image in the potential plane 
N free-surface elevation in a uniform small F expansion 
t'(x') thickness distribution 
rE body maximum half thickness 
u' ,v' velocity components 
Sie unperturbed velocity 
w' complex velocity in two dimensions : vertical velocity com- 
ponent in 3d. 
W perturbation complex velocity in a uniform small F expan- 
sion 
ac! horizontal coordinate positive in the direction of flow 
y' vertical upwards coord. in 2d, horizontal in 3d 
z' complex variable in 2d, vertical upwards coord. in 3d. 
a, B real and imaginary parts of w 
angle arbitrarily small 
slenderness parameter 
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