Abstract
A survey of noise and vibration levels in a car-carrying passenger ship indicates that an important contribution to noise in some of the passenger cabins is due to reverberation of large areas of metal forming the walls and floor in an adjacent store area. Trials are described in which approximately 800 ft 2 of a viscoelastic damping material is applied to these surfaces. A small but significant reduction in cabin noise level is obtained. It is argued that large scale use of damping material at the time of building could result in appreciably quieter ships.
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