The International Maritime Organization (IMO) has introduced two major publications designed to help reduce underwater radiated noise (URN) from ships, reinforcing global efforts to protect marine ecosystems from the effects of shipping activity.
According to the IMO, awareness of URN and its potential impact on marine life has grown significantly in recent years. The latest guidance aims to support national authorities, shipowners, and maritime stakeholders in identifying, assessing, and mitigating sources of underwater noise generated by propellers, engines, and hull movements.
The two newly released publications include:
- Gap Analysis of Policies and Recommendations for the Mitigation of Underwater Radiated Noise from Shipping:
This report reviews international and regional frameworks related to URN mitigation and highlights how national administrations can integrate existing measures or develop new approaches to address underwater noise. - Guide for the Development of a National Stakeholder Engagement Plan for the Mitigation of Underwater Radiated Noise from Shipping:
This practical guide helps member states and maritime organizations design structured engagement strategies that promote collaboration between regulators, ship operators, ports, and environmental experts.
The IMO notes that addressing underwater noise requires a coordinated approach, with contributions from shipyards, engine manufacturers, research institutions, and port authorities. Integrating technical innovations, such as optimized hull designs, quieter propulsion systems, and improved maintenance practices, is seen as a key part of the broader solution.
The publications are part of the IMO’s continued efforts to align shipping operations with environmental protection goals and encourage data-driven collaboration among global maritime stakeholders.
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Source: International Maritime Organization
