Free Surface Effects tn Hull Propeller Interaction 
x Calculated by lifting line theory 
O Estimated from Je for sink disk (Hough and Ordway) 
— Estimated from Jp for sink disk (Dickmann) 
----- Measured es 
—-— Measured at deep 
submergence 
Figure 13 Calculated and measured propeller characteristics at 
shallow submergence 
1927 
