One of the most important problem in the propulsion prognosis is determination in the full scale of the velocity field in the propeller operation area behind the ship hull. The maximum pressure pulsation on the hull criterion and maximum bearing force criterion predominate the maximum efficiency propulsion criterion in the modern shipbuilding. For this reason a necessary condition of the proper design is the determination of the velocity field in the full scale in the propeller operation area behind the ship hull taking into account the velocity field generating on the hull by the propeller. The paper will present the numerical results of such a velocity field calculated by the own computer system PANSHIP-2 (numerical model basin). The selected examples will show the influence of the propeller operation on the effective field and the scale effect of nominal flow field will be discussed.
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