HYDRODYNAMIC INTERACTION BETWEEN HULL, PROPELLER AND RUDDER OF HIGH SPEED TWIN-SCREW, TWIN-RUDDER SHIPS

Based on the results of oblique towing tests of five models and rotating arm tests of one model, the hydrodynamic interaction between hull, propeller and rudder of high speed twin-screw, twin rudder ships with transom stern is obtained. By analysing the relation of interaction coefficients with the drift angles, yawing velocities and ship principal dimensions, the formulas for calculating the hydrodynamic interaction of the ship are established.