Free Surface Effects tn Hull Propeller Interactton 
Thrust coefficient of free-running propeller = T/pn2D* 
Thrust coefficient of propeller behind hull = Tyy/pn2D4 
Length of hull 
Coordinate system, see Figure l 
Pitch of propeller 
Propeller torque in open water 
Propeller torque behind hull 
Real part of 
Propeller hub radius 
Reynolds number of hull = VL/» 
Propeller tip radius 
Total resistance of hull 
Viscous resistance of hull 
Wavemaking resistance 
R.,, of hull alone 
W 
Rw of propeller alone 
Rw of total system hull and propeller 
Polar coordinates in propeller plane , Equation (B9) 
Coordinates of source point in propeller plane 
Wetted surface area 
Draft of hull 
Propeller thrust in open water 
Propeller thrust behind hull 
Speed of advance of hull 
Speed of advance of free-running propeller 
Speed of advance of propeller relative to wake in the 
behind hull condition 
Speed of model 
Number of blades of propeller 
1873 
