Hydrofoils Running Near a Free Surface 161 
Fig. 14. Influence of the aspect ratio on the lift coefficients (upper curves) 
and drag coefficients (lower curves) of a dihedral foil 
OR=0° 
Op-5° 
@ p= 8° 
DF = 15°, Apron 45 
Fig. 15. Influence of the rolling angle on a dihedral foil 
