Tag: antifouling

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Green anti-fouling technology to clean for Statoil

  GAC EnvironHull has signed a contract with the international energy company Statoil to provide underwater hull cleaning services for its vessels operating in Scandinavia, the Middle East and the Far East. From the second quarter of 2015, GAC EnvironHull, part of global shipping, logistics and marine services provider GAC Group, is using its pioneering HullWiper technology to remove fouling from the Statoil fleet of long term chartered vessels to enhance efficiency and reduce fuel consumption, whilst also preserving and protecting the delicate maritime environment. HullWiper is a diver-free underwater hull Remote Operated Vehicle (ROV) which uses high pressure water jets to remove marine fouling. It can clean up to 2,000 m² of hull per hour without causing any damage to anti-fouling surfaces. As no divers are involved, cleaning can be done alongside during loading or discharging operations, and any risk to life is significantly reduced. HullWiper cleans about five times faster than conventional cleaning methods, reducing the cleaning time by approximately half. The entire process is in line with the GAC Group’s stringent Health, Safety, Security and Environment (HSSE) and compliance policies, as well as all local and regional environmental regulations. Residues and harmful marine growths captured during cleaning ...

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Advanced hull and propeller performance analytics launched by DNV GL

DNV GL is launching an advanced hull and propeller performance analytics module as part of the new fleet performance management service ECO Insight. The module is based on computational fluid dynamics (CFD) methods to correct for changing operational conditions and produces much more accurate results than existing approximate or experimental methods. Fuel efficiency remains a key concern for shipping, but tracking hull and propeller degradation is a challenge that has not yet found an adequate solution. Experts suggest that, as a result of hull fouling, the world fleet could be sailing with approximately 30 per cent added resistance and consequently significantly higher levels of fuel consumption. Undertaking hull and propeller cleaning on a more regular basis is already recognized as improvement lever by many shipping companies. However, the question of when and how the procedure should be carried out has not yet been addressed systematically. Hull and propeller performance computations show how much resistance is added over time due to fouling, by analysing the gap between the theoretical and measured power demand of a vessel, after correcting for influences like speed, draft, trim, weather and other operating conditions. “We use data that shipping companies are already collecting,” Dr Torsten Büssow, ...

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Hempel launches new antifouling products

Building on the industry proven GLOBIC and DYNAMIC range of antifouling systems,  marine coatings manufacturer Hempel announces the launch of two new antifouling products for dry-dockings and new buildings which deliver fuel savings of up to 3% and provide added flexibility to shipowners and yards. GLOBIC 8000 is a brand new hydrolysing self-polishing antifouling product that fits neatly between the existing GLOBIC 6000 and GLOBIC 9000 antifouling systems. It builds on proven GLOBIC technology to deliver premium performance at a reasonable price. It incorporates Hempel’s nano acrylate technology which delivers a fine polishing control mechanism to bring the integral biocides to the surface at a stable rate ensuring a clean hull. GLOBIC 8000 can be used on all vessels at all speeds but its nano acrylate technology binder makes it particularly effective for slow-steaming operations because of its instant activation of polishing and biocide leaching. DYNAMIC 8000, also launched today, extends the current DYNAMIC range utilising silylated acrylate technology to deliver an outstanding antifouling service at higher speeds. Announcing the launch, Andreas Glud, Hempel’s Group Product Manager said: “These two new products offer a wider choice for owners and yards and deliver exceptional value-for-money. They comprise 58% volume solids and ...

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