Excitation of the ship structure via propeller shaft and thrust bearing

This paper demonstrates by model measurements the influence of in-plane forces (exciting the ship structure ) on structureborne noise and the adjacent underwater radiated noise. The results were compared with the structureborne noise and the radiated underwater radiated noise due to normal excitation of the ship's hull. Concerning underwater radiated noise the in-plane excitation of the ship structure is of minor importance and can be abandoned with respect to the normal excitation.