PROPELLER CHARACTERISTICS WITH DIFFERENT LOCATIONS OF THE RUDDERS IN THE PROPELLER RACE OF TWIN RUDDERS‐TWIN SCREWS SHIPS

SUMMARY The research deals mainly with experiments of a one rudder‐one screw combination which is supposed to represent the condition of the twin rudders‐twin screws type, This study includes only the case of rudder which was placed inboard of propeller centerline and located in the propeller race. Different locations of rudders have been the subject of investigations to study the optimum position relative to the propeller.