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Tiny propeller defects can increase underwater noise

Tiny propeller defects can increase underwater noise

by Mariska Buitendijk | Mar 1, 2023 | Emissions, Maritime research, News, Ship propulsion, Shipping

The slightest deviation in the machining, polishing, and finishing of ships’ propeller blades could result in underwater radiated noise and cavitation, even if defects are within the maximum tolerance allowed by classification societies and the ISO 484-1 standard....
VIDEO: How holes in a propeller reduce underwater noise

VIDEO: How holes in a propeller reduce underwater noise

by Mariska Buitendijk | Jan 6, 2023 | Emissions, News, Ship propulsion, Shipping

Oscar Propulsion and the University of Strathclyde have developed technology that substantially reduces the underwater radiated noise generated by ships’ propellers. The patented PressurePores system reduces propeller tip vortex cavitation by applying a small number...
IFAW argues for speed limit for ships in EU waters

IFAW argues for speed limit for ships in EU waters

by Mariska Buitendijk | Oct 31, 2022 | Emissions, Maritime regulations, Maritime research, News, Shipping

A speed limit for commercial ships in European Union waters could bring an estimated EUR 3.4-4.5 billion in socioeconomic benefits. In addition, it reduces underwater noise, the risk of ships colliding with whales and greenhouse gas emissions. This follows from a...
Green dynamic positioning system saves fuel and reduces noise

Green dynamic positioning system saves fuel and reduces noise

by Mariska Buitendijk | Jun 21, 2021 | Emissions, News

RH Marine has developed a new green dynamic Positioning (DP) system, which optimises the fuel consumption of generators and thrusters. As a result, ships can sail more efficiently and save fuel. By switching completely to batteries, the DP system also enables vessels...
European project seeks to reduce the impact of underwater noise

European project seeks to reduce the impact of underwater noise

by Mariska Buitendijk | Dec 28, 2020 | News

Noise from ships disturbs and threatens marine life. In the European project SATURN, twenty project partners from ten countries will work on a cleaner, quieter maritime sector over the next four years. The focus will be on solutions for reducing and mitigating the...
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