The propeller noise induced in the accommodation spaces on as ship is a function of the acoustical source strength of the propeller ana of the response of the hull plates above the propeller. For a cavitating propeller the source strength is primarily determined by the volume variation of the cavity on each propeller blade. The cavitation volume can be calculated as function of the propeller geometry, propeller rpm and wake field. Provided the cavitation volume can be considered as being a monopole source the resulting source strength can be calculated as function of frequency.
Based on a simple plate theory the response of the hull plates can be predicted as function of the source strength of the propeller; or rather the incident pressure on the hull plates.
Predicted results of source strength and plate response are compared to full scale measurements. A few methods of how to reduce the power induced in the hull plates are discussed.
