A recently developed method for predicting propeller-hull interaction, in which a numerical method for calculating the viscous flow over the stern and in the wake of a ship is coupled with a propeller-performance program in an interactive and iterative manner to predict the combined flow field, is validated by performing comparisons between computational results and extensive available experimental data for propeller-shaft configurations. The steady-flow results show that the present procedures are able to accurately predict many details of the flow field. The dependence of the flow field on propeller loading, including the formation of the hub vortex, and the influence of hub length, are accurately simulated. Also, the robustness of the solution procedure is demonstrated by performing calculations for off-design (large-loading) conditions. The unsteady-flow calculations, which simulate the fanning action of a rotating finite-bladed propeller are in reasonable agreement with the experimental data.