Managing the cruise industry’s underwater radiated noise – a Webinar

2024-05-23T19:09:15+00:00 May 23rd, 2024|Marketing|

Recent developments, including the approval of revised guidelines at the IMO level, underscore the urgency of addressing adverse impacts on marine life.

The revised guidelines for the reduction of underwater noise from commercial shipping (MEPC.1/Circ.906) and the guidelines for underwater radiated noise (URN) reduction in Inuit Nunaat and the Arctic (MEPC.1/Circ.907) highlight the industry’s commitment to mitigating URN.

Lloyd’s Register is to hold a webinar in which its technical specialists on underwater noise emanating from cruise ships will delve into these pivotal advancements and their implications for cruise ship operations, as well as recommendations on how to manage the fleet in anticipation of potential mandatory requirements.

The webinar will be held on Wednesday 29th May and will offer  two sessions –

  • Webinar 1: 1300 – 1400 (BST) / 0800 – 0900 (EST).
  • Webinar 2: 1900 – 2000 (BST) / 1400 – 1500 (EST).

To be covered: –

  • Explore how harbour fees can be reduced with noise compliant vessels.
  • Introduction to URN and its impact on the cruise industry.
  • Regulatory landscape and compliance requirements.
  • Learn how to reduce a vessel’s ecological impact.
  • LR’s solutions for URN management –

Development of an URN plan establishing

baseline and goals.

Selecting and implementing reduction technologies.

Independent verification and validation processes.

Vessel design optimisation.


  • Case studies and best practices.
  • Live Q&A session with Daniel Alvarez- LR’s Team Lead- Noise and Vibration (pictured below).

To register Click on this link

Why does mitigating underwater noise matter?

Marine mammals and fish heavily rely on their sense of hearing for essential activities, such as navigation, communication, and locating food sources.

Each species exhibits sensitivity to specific frequency ranges within the spectrum, crucial for their survival and environmental interaction.

However, ships’ increasing underwater noise is disrupting this balance, prompting regulators globally to develop regulations aimed at minimising its impact.

Regulatory frameworks

Since 2014, URN guidelines (MEPC.1/Circ.833, April, 2014) have been available for commercial ships, offering non-mandatory advice for designers, builders, and operators.

Covering design, operational, and maintenance considerations, these guidelines serve as a valuable resource for enhancing URN management practices.

Recently, new guidelines have been approved, providing additional insights into URN reduction approaches and technologies.

During MEPC80, the IMO’s Marine Environment Protection Committee (MEPC) adopted a revised strategy aimed at achieving net-zero greenhouse gas emissions by or around 2050, with discussions on URN and measures to reduce shipping’s impact on them (MEPC.1/Circ.906) and (MEPC.1/Circ.907).

While still not mandatory, these guidelines offer detailed recommendations for both existing and new ships, emphasising the importance of creating an Underwater Noise Management Plan.

This plan is set to align with the mandatory Energy Efficiency Management Plan, ensuring a holistic approach to environmental sustainability.

IMO member states are implementing local restrictions, and an increasing number of speed reduction zones, while Particularly Sensitive Sea Areas (PSSAs) are being established.

Ports are also incentivising compliance, with initiatives such as the Port of Vancouver (BC) offering significant fee discounts for vessels with LR’s UWN-L notation.

Furthermore, the International Association of Classification Societies (IACS) is actively working towards Unified Standards for measurement, enhancing consistency and reliability across the industry.