The underwater radiated noise characteristics of a fishing trawler

1979 ◽  
Vol 66 (S1) ◽  
pp. S24-S24
Author(s):  
E. E. Davis ◽  
N. J. DiPiazza
Keyword(s):  
Radiated Noise ◽  
Noise Characteristics ◽  
Underwater Radiated Noise

noiseNet: A neural network to predict marine propellers’ underwater radiated noise

2021 ◽  
Vol 236 ◽  
pp. 109542
Author(s):  
Youjiang Wang ◽  
Keqi Wang ◽  
Moustafa Abdel-Maksoud
Keyword(s):  
Neural Network ◽  
Radiated Noise ◽  
Marine Propellers ◽  
Underwater Radiated Noise

scholarly journals Multi-sensor integration for an assessment of underwater radiated noise from common vessels in San Francisco Bay

2021 ◽  
Vol 149 (4) ◽  
pp. 2451-2464
Author(s):  
Samantha Cope ◽  
Ellen Hines ◽  
Roger Bland ◽  
Jerry D. Davis ◽  
Brendan Tougher ◽  
...  
Keyword(s):  
San Francisco ◽  
San Francisco Bay ◽  
Sensor Integration ◽  
Radiated Noise ◽  
Underwater Radiated Noise

scholarly journals Review of Legislation on Noise and Vibration Regulations in Merchant Ships

2015 ◽  
Vol 157 (A3) ◽  
pp. 135-144
Keyword(s):  
European Union ◽  
Environmental Impact ◽  
The European Union ◽  
Noise And Vibration ◽  
Radiated Noise ◽  
Underwater Radiated Noise ◽  
Board Ship

"This paper aims to describe the evolution of noise regulations for merchant ships over the last four decades, analysing the most important aspects with respect to crew, passengers and exposed populations in cities, in line with the requirements of the European Union to reduce the environmental impact of transport. The paper also analyses the changes in regulations aimed at not only regulating noise and vibration inside the ship, but also noise emitted to the port and underwater radiated noise. We shall also include Classification Societies, given the importance of their standards in ensuring increasing levels of comfort on board ship."

Mitigation of Underwater Radiated Noise Related to Shipping and Its Impact on Marine Life: A Practical Approach Developed in the Scope of AQUO Project

2017 ◽  
Vol 42 (2) ◽  
pp. 373-387 ◽  
Author(s):  
Christian Audoly ◽  
Tomaso Gaggero ◽  
Eric Baudin ◽  
Thomas Folegot ◽  
Enrico Rizzuto ◽  
...  
Keyword(s):  
Practical Approach ◽  
Radiated Noise ◽  
Marine Life ◽  
Underwater Radiated Noise

Noise Control Decision Process for Marine Vessels

2014 ◽  
Author(s):  
Raymond W. Fischer ◽  
Louis M. Pettit
Keyword(s):  
Marine Mammals ◽  
Noise Control ◽  
Regulatory Body ◽  
Noise Levels ◽  
Radiated Noise ◽  
Underwater Radiated Noise ◽  
Sound Levels ◽  
Airborne Noise ◽  
Control Decision ◽  
Marine Vessels

There is a price to be paid to achieve compliance with the acoustic requirements imposed by regulatory agencies. Acoustic requirements typically appear in ship specifications as airborne and/or underwater radiated noise limits as the need to preclude hearing loss for crew members and the need to control sound levels experienced by marine mammals receive more recognition. Recent changes and additions to regulatory body requirements addressing compartment airborne noise and underwater radiated noise can be found in IMO Resolution MSC.337(91) Annex 1 and Annex 2 which state that IMO Resolution A.468(XII) “Code on Noise Levels Onboard Ships” shall take effect on 1 July 2014 for all SOLAS compliant vessels. Thus the airborne noise levels in compartments and at on-deck work stations onboard as-built ships seeking a SOLAS certificate will need to be measured, and must demonstrate compliance with noise limits stated in paragraph 4.2 of IMO Resolution A.468(XII). IMO “Guidelines for the Reduction of Underwater Noise from Commercial Shipping to Address Adverse Impacts on Marine Life” dated 7 April 2014 and agencies such as ICES and DNV have established guidance and/or criteria for control of underwater radiated noise from vessels, and these too are now commonly appearing in ship specifications. Specifications referencing such criteria typically require that compliance be demonstrated by at-sea testing of underwater radiated noise. Making the correct decisions during the ship design process will minimize costs for noise control and will provide a positive return on investment. The process of how best to comply with noise limits while minimizing costs through optimization of noise control treatments and design approaches is discussed.

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