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TECHNOLOGY - PROTECTIVE COATINGS Hempel ‘guarantees’ fuel savings Leading Danish marine coatings specialist Hempel has introduced a third generation coating, a new universal primer and is chairing a joint working group on the IMO PSPC regulation. Two more products are also to be launched later this year, which are being kept under wraps. Since the introduction of the third generation hull coating, the patented Hempasil X3, in November 2008, it has been applied top the hulls of various vessel types, including chemical tankers, product tankers and VLCCs. The third generation Hempasil coating was the product of exhaustive towing tank studies conducted by FORCE Technology, combined with over five years of static raft and dynamic rotor testing. For the static raft tests, in-water plates were installed in the Mediterranean and Singapore for the same length of time. The research has proved that Hempasil X3 delivers significant fuel savings for all vessel categories. “The picture is clear,” said Torben Rasmussen, group product manager for Hempasil X3. “We’ve confirmed fuel savings of more than 8% for several ship types with different hull designs, wetted areas and operation pattern.” Hempel said that it was so confident in the new coating’s fuel-saving capabilities, that as part of the package, a 4%-8% reduction in first-year fuel consumption is guaranteed. In developing Hempasil X3, the Danish paint manufacturer said that the improvement of fuel efficiency was its top priority. This has been achieved thanks to a very low skin friction and a prolongation of the fouling-free period, even at speeds as low as eight knots, the company claimed. Hempel said that If all the world’s fleet was able to reduce fuel consumption by 8%, it would reduce the industry’s carbon footprint by some 80 mill tonnes per year. Another example given was that if 22% of the fleet was coated, a fuel saving of $1.5 bill per year could be achieved amounting to 10 mill tones of CO2 per year. For a VLCC the cost of coating Hempasil X3 would be $1.135 mill – much higher than say Globic NCT. But when the vessel is operating for 60 months at 75% activity burning 75 tonnes of fuel per day at $450 per tonne and given a fuel saving of 4%, the sums add up to an estimated overall fuel saving of $1.848 mill, while the difference in paint costs amounts to $822,800 higher. The use of the software –SeaTrend - costs an extra Eur2,000 per year, Hempel explained. Hempasil X3 is described as a complete efficiency solution that also includes the fuel savings guarantee and SeaTrend, an advanced software tool for measuring performance and efficiency. SeaTrend was developed by FORCE Technology to help improve voyage efficiency by assessing hull and propeller performance. Hempasil X3 is Hempel’s third-generation fouling release coating system manufactured with a high solids content. It is based on silicone, is biocide free and cures following the addition of Hempasil Crosslinker 98950. It uses hydrogel technology to stop fouling organisms (from biological slime and seaweed to barnacles) from attaching to a ship’s hull. The hydrogel micro layer fools the organisms into thinking the ship’s hull is Exhaustive towing tests on a VLCC hull were carried out by FORCE Technology. 36 TANKER<strong>Operator</strong> January/February 2010
THE ULTIMATE PROTECTION Superior tank coatings for the widest possible range of liquid cargoes “Our phenolic epoxy HEMPADUR 15500 has more than fifteen years track record with excellent global performance and is rated the best phenolic epoxy tank coating in the market today. In Korea we have coated the tanks of more than 100 vessels with this product without a single claim.’’ Michael Aamodt, Group Marine Product Manager For more information please visit: www.hempel.dk
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