According to safety4sea reports, the International Maritime Organization (IMO) is intensifying efforts to tackle underwater noise pollution caused by ships. During the recent MEPC 82 Committee meeting (30 September – 4 October 2024), IMO introduced new amendments to its Revised Guidelines for the Reduction of Underwater Radiated Noise (URN). The goal is to minimize the adverse effects of ship-generated noise on marine ecosystems and ensure sustainable maritime practices.
What Is Underwater Noise from Ships?
Underwater noise refers to sounds produced during a ship’s operations, including engine noise, propeller cavitation, and hull vibrations. These noises travel through water, disrupting the communication, navigation, and behaviour of marine species. Sensitive regions like the English Channel, Strait of Gibraltar, Adriatic Sea, and Baltic Sea report higher sound pressure levels, making underwater noise reduction critical for marine preservation.
Key Components of the URN Action Plan
IMO’s URN Action Plan aims to promote the adoption of the Revised URN Guidelines by addressing challenges faced by member states. Its major initiatives include:
- Experience-building phase (EBP): A three-year trial period (until 2026) to collect feedback and best practices, with a possible two-year extension.
- Training and awareness: Focused on educating seafarers, enhancing public awareness, and developing noise reduction policies.
- Research and data sharing: Encouraging more studies on underwater noise and establishing tools for data collection.
Collaborative Efforts to Implement Noise Reduction Guidelines
To support the industry in following the IMO’s guidelines, organizations such as BIMCO and the International Chamber of Shipping (ICS) have developed a guide for understanding and mitigating ship noise. Through international collaboration and continued experience-building, the IMO seeks to refine these guidelines and create effective solutions for the long-term health of marine ecosystems.
The IMO’s sustained efforts reflect the maritime sector’s growing commitment to reducing environmental harm, paving the way for quieter seas and improved marine conservation.
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Source: SAFETY4SEA
