This standard specifies the method and conditions for measuring the noise level of the hull of a ship while operating at sea. The measurement results are used, for example, as follows. — Approval tests to confirm compliance with national standards, international regulations and shipowner specifications — Monitoring tests — Measurement basic data for noise reduction measures and detailed investigations — Noise exposure and noise to crew As data for evaluating the effects of -Evaluation of conversation intelligibility -Evaluation of the audibility of acoustic warnings There are variations in noise measurement values due to, for example, differences in measurement methods and ambient conditions. In measurements according to this standard, there are almost no examples of A-weighted corrected values, and the reproducibility is within 1.5 dB.
JIS F 0905:1998 history
1998JIS F 0905:1998 Measurement of noize level on board vessels (hull part)