scope:

This International Standard specifies techniques and conditions for the measurement of noise on board vessels, both inland and seagoing, in order to obtain reproducible and comparable measurements. The results may be used, for example, for the following:

- to compare various vessels;

- in delivery and acceptance tests for comparison with national or international legislation and owner's specifications;

- in monitoring tests;

- as a basis for further investigations and noise-abatement measures;

- as a bases to assess the noise exposure and the effects of the noise to which seafarers are exposed:

- to assess speech intelligibility;

- to assess the audibility of acoustical alarms.

The uncertainty of measurements on board vessels depends on several factors, for example, measurement techniques and environment conditions. Measurements made in conformity with this International Standard with few exceptions result in standard deviations of reproducibility of the equivalent continuous A-weighted sound pressure level equal to or less than 1,5 dB.