Classification society Lloyd’s Register (LR), has released a new airborne noise emission notation (ABN) and ShipRight procedure in response to growing demand for a standard and process to control airborne noise emissions from ships.
The ABN notation will define a set of limits for acceptable levels of airborne noise emissions from ships. This will assist ports in enabling them to monitor more efficiently the overall noise levels from vessels during port calls as well as the most noise sensitive areas of the port to determine how many ships can access those areas at one time. Ports will also be allowed to ask operators to obtain a specific ABN notation to be allowed in a noise sensitive area of the port, especially in those close to residential buildings.
Shipowners will also have to demonstrate that their vessels have controlled airborne noise emissions, as specified in the ABN notation, to gain access to noise sensitive areas, for example, natural sanctuaries or ports in city centres.
Per Trjgrd Andersen, LR principle consultant noise & vibration commented on the ABN notation “it will assist ports and shipowners in controlling and verifying noise emissions. Several industry partners have helped with the development of the notation, including yard representatives and port operators.”
The EU already has a directive (EU 2016/1629) in place which specifies the maximum noise level that can be emitted from a ship whilst sailing and at berth. The ABN notation will ensure that all ships will comply with the directive.
The new notation defines five limit levels for airborne noise emission, which are; super quiet (SQ), quiet (Q), standard (D), inland waterways (IW) and commercial (C).