Ultrasonic anti-fouling technology is making marine growth on hulls and in raw-water cooling systems a thing of the past. This is taking shape against a backdrop of increasingly strict legislation relating to the use of metallic biocides in anti-fouling coatings.Since 2006 NRG Marine has protected more than 15,000 vessels with its Sonihull ultrasonic anti-fouling systems. According to commercial director Darren Rowlands, the annual maintenance check for most vessels means dry-docking and the shock of seeing themass of algae from the waterline to the keel.
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