Page 58: of Maritime Reporter Magazine (November 2021)

TECH FEATURE COATINGS percent when combining with an industry leading speed loss Actiguard works by forming a biocide-activated hydrogel over 60 months of 1.4 percent, without scheduled underwa- on the surface of the fouling defence coating. As the biocide ter hull cleanings required. For a bulk carrier with a bunker diffuses out of the ? lm, it is trapped in the hydrogel layer which consumption of 50 tons per day, overall activity level of 70 increases its surface concentration and prolongs the time the percent, service interval of 60 months and a bunker cost of biocide is retained at the surface of the coating. This means $500 per ton, Hempaguard X7 would provide fuel savings that less biocide is needed and its effectiveness in preventing of $6.2 million and reduce CO2 emissions by 35,000 metric the settlement of biofouling organisms is greatly enhanced. tons, compared with a market average antifouling. It is built Additionally, it also means that the concentration of biocide is on Hempel’s patented Actiguard technology that was the ? rst maintained at a level where the silicone coating retains all its paint to combine both silicone-hydrogel and advanced bio- antifouling and smooth surface properties.

cide control in a single coating. 58 Maritime Reporter & Engineering News • November 2021

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