東海大学海洋調査研修船「望星丸」のディーゼル発電機から居住区画への騒音伝搬特性

In the ship hull structure, there are a lot of noise sources such as propulsion engines, diesel generators, pumps and air conditioning machinery, etc. Noise generated by these sources propagates through the decks and bulkheads in the hull structure, and becomes noise in compartments such as cabins and workrooms. It is necessary to predict the noise levels and determine appropriate noise control approaches in order to reduce the noise levels in compartments. However, in order to get accurate results for noise prediction, an effective prediction model is needed. Therefore noise transmission characteristics from various sources and source levels must be obtained properly.