As the international shipping industry continues to explore measures to conserve and protect underwater life, the International Maritime Organization (IMO) is proposing the future monitoring of Underwater Radiated Noise (URN), which may lead to the establishment of thresholds combined with long-term monitoring requirements for certain regions.
Underwater noise from ships can significantly impact marine life by disrupting communication, navigation, and feeding behaviors in various species. This noise pollution can cause stress, disorientation, and even physical harm to marine animals, particularly those that rely on sound, such as whales, dolphins, and fish, leading to potential long-term consequences for their populations and ecosystems.
In the HyPNoS (Hydrodynamic Propeller Noise Monitoring System) research project, international propulsion specialist SCHOTTEL, together with project funder Transport Canada and partner BC Ferries, investigated the emission of URN from ship propulsion systems in the waters off Vancouver, Canada. The focus was on developing methods for measuring, predicting and reporting URN and deriving optimized design measures to reduce it. The research now culminates in the development of an on-board, real-time URN reporting…