Report on technologies and operational practices to improve energy efficiency and/or to reduce underwater vessel noise

The International Maritime Organization (IMO) will be hosting an international two-day workshop from
September 18 to September 19, 2023, at IMO headquarters in London, UK, to assess the potential cobenefits and trade-offs that may exist between approaches taken or that are likely to be taken to comply
with energy efficiency regulations and reduction of underwater radiated noise (URN) from ships.
To support the workshop’s objectives, information regarding technologies and operational practices to
improve energy efficiency and/or to reduce underwater vessel noise needs to be evaluated and
summarized prior to the workshop.
The objectives of the current work are to 1) summarize the latest research and understanding of EE
improvement measures and what is known about their relationship to URN reduction; 2) produce a report to
be used as the main reference for the IMO workshop. As the target audience of this workshop is both
technical and policy makers, it is important that the report is written in plain language to be understood by
diverse viewpoints; 3) attend the workshop as a technical expert; and 4) update, as appropriate, the final
report reflecting the outcomes of the workshop and support and review TC submissions to the IMO with
regards to this work (i.e., expecting two submissions to IMO Sub-Committee on Ship Design and
Construction (SDC 10), including summary of the report (e.g., table or matrix format) and workshop
outcomes)