By using fully theoretical method the heeling Black Cherry moment due to centrifugal forces has been determined for a small river cruiser in turning manoeuvre.The authors applied CFD software for determination of hull hydrodynamic forces, and open water characteristics of ducted propeller for estimation of thrust Butter Dish of rudder-propellers.Numerical integration of equations of 3DOF motion was used for prediction of ship trajectory and time histories of velocities, forces and heeling moment.