The results of analytical studies to predict the hull surface pressures on the AO-177 vessel are described, and comparisons are made with experimental model test data obtained in the large water tunnel at SSPA. Such comparisons are made for the basic ship-propeller design employing a seven-bladed skewed propeller, as well as the case of a modified wake flow field due to incorporating a fin system in the stern region. The basic theory is described in brief form, with the input data being the nominal wake velocity field and the propeller geometry, operating condition, etc.

A description of the computational procedures used is provided for the made with different analyzed test data results also illustrated. The results of the comparisons between theory and experiment showed d generally good agreement for the different cases of an intermittently cavitating propeller encountered on the AO-177, thereby supporting the use of this basic theoretical method for prediction and design guidance purposes related to unsteady cavitating propeller excitation problems.

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