Machinery casings may, however, be exposed if there are no openings giving direct access from the freeboard deck to the machinery space. 然而，如果没有提供从干舷甲板到机舱的直接通道，那么机舱围壁应该是露天的。
Assessment of risk and reduction of exposure levels to noise in all accommodation and recreational and catering facilities, as well as engine rooms and other machinery spaces. 进行风险分析并减少所有居住舱室及娱乐和膳食服务设施以及机舱和其他机器处所的噪音水平。
