Addressing underwater noise from ships – draft revised guidelines agreed

Share

Draft revised Guidelines for the reduction of underwater noise from commercial shipping to address adverse impacts on marine life have been agreed by the IMO Sub-Committee on Ship Design and Construction (SDC 9), which met 23-27 January.

The draft guidelines recognize that commercial shipping is one of the main contributors to underwater radiated noise (URN) which has adverse effects on critical life functions for a wide range of marine life, including marine mammals, fish and invertebrate species, upon which many coastal Indigenous communities depend for their food, livelihoods and cultures.

The draft revised guidelines provide an overview of approaches applicable to designers, shipbuilders and ship operators to reduce the underwater radiated noise of any given ship. They are intended to assist relevant stakeholders in establishing mechanisms and programmes through which noise reduction efforts can be realized.

The draft guidelines revise the previous guidelines (issued in 2014). They include updated technical knowledge, including reference to international measurement standards, recommendations and classification society rules. They also provide sample templates to assist shipowners with the development of an underwater radiated noise management plan.

The draft guidelines will now be submitted to the Marine Environment Protection Committee (MEPC 80), which meets from 3-7 July 2023, for approval.

IMO’s Department of Partnerships and Projects (DPP) later this year will commence a two-year GEF-UNDP-IMO project called the Global Partnership for Mitigation of Underwater Noise from Shipping (GloNoise Partnership), which is aligned with the current work on the review of the Guidelines for the reduction of underwater noise (MEPC.1/Circ.833) (pending approval by MEPC 80, these will then become the Revised Guidelines) and to consider next steps.

The GloNoise Partnership will establish a global stakeholders’ partnership in order to address the major environmental issue of underwater noise from shipping. The partnership will include a strong developing countries’ element as well as public-private engagement. The specific objective of the GloNoise Partnership is to assist developing countries and regions to raise awareness, to build capacity and to collect information to assist the policy dialogue on anthropogenic underwater noise from shipping. To support this process, data and analysis tools and capacity building materials will be developed, rolled out and implemented globally and in the participating countries.

logo