New underwater noise notation

Underwater noise control A new underwater noise notation from Lloyd’s Register is based on the new ISO 17208 standards
Industry Database

Lloyd’s Register (LR) has released a new underwater noise notation and ShipRight procedure on underwater radiated noise to help shipowners minimise underwater noise emissions when operating in sensitive environments.

The underwater noise notation is based on the new ISO 17208 standards and defines three criteria curves: transit, quiet and research. It also includes a speed indication, e.g. ‘UWN-L(T20)’, which would mean that a vessel meets the underwater noise criteria in transit (T) at a speed of 20 knots.

LR’s Per Trøjgård Andersen, technical lead – engineering dynamics, commented: “This new notation will not only help shipowners to reduce underwater noise radiation in sensitive environments. It will also demonstrate a commitment to environmentally friendly practices, and even has the added benefit of potential discounts in port fees.”

Design phase help

In addition to testing and certifying vessels, LR will also work with shipowners during the design phase to predict and control the underwater noise emissions from vessels.

Increased focus is being placed on underwater noise emissions from vessels and this is creating the need for a means of controlling underwater noise radiation. New international standards and regulations are anticipated, which will restrict access to environmentally sensitive areas and limit the types of vessels calling at ports to only those complying with stringent noise level standards.

Several countries and ports have already introduced speed restrictions in sensitive areas. Some ports also offer discounts in port fees if the ship has an underwater noise notation that certifies compliance with a set of underwater noise limits.

LATEST PRESS RELEASES

SCHOTTEL strengthens presence in Nordic region

As of November 2018, SCHOTTEL Norway AS and Frydenbø SCHOTTEL Nordic AS have been merged under SCHOT... Read more

StormGeo Launches Navigator Solutions Portfolio

The First Integrated Navigational Planning and Route Optimization Platform Delivered by One Company Read more

Oceans of opportunity

Sofia Fürstenberg Stott has been an architect of Nor-Shipping’s evolution to embrace and enable new ... Read more

Nor-Shipping looks to achieve industry first with ISO sustainable event standard

Nor-Shipping is aiming to set a new benchmark for the maritime and ocean event segment with a move t... Read more

Datum Electronics Ltd and Intertech B.V. Announce New Partnership in the Netherlands

Located in the Netherlands, Intertech B.V. is now Datum Electronics’ representative for torque senso... Read more

Oil quality is the key to increased up-time

Research has shown that 80% of all hydraulic failures can be directly attributed to oil contaminatio... Read more

View all