Acoustics - Measurement of airborne sound emitted by vessels on inland waterways and harbours (ISO 2922:2020)

This technical specification addresses the methodologies for measuring sound pressure levels generated by ships within inland waterways and ports, specifically focusing on emissions into the surrounding air. It provides detailed procedures for conducting acoustic assessments in confined or semi-confined aquatic environments where vessel operations can significantly impact local noise levels. The document outlines the necessary equipment requirements, calibration protocols, and placement of microphones to ensure accurate data collection under varying operational conditions. It covers scenarios involving different vessel types and maneuvering states relevant to port operations and navigation channels. The approach aligns with established international practices to facilitate consistency in environmental monitoring and noise control strategies across regional boundaries. By standardizing measurement techniques, the specification supports regulatory compliance and aids in the development of effective noise mitigation measures for maritime communities adjacent to busy waterways. The guidelines emphasize the importance of precise instrumentation and controlled measurement environments to derive reliable acoustic data for further analysis and reporting.