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Four Stena newbuilds to have bio-repellant antifouling

Written by Nick Blenkey
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JUNE 7, 2017 — Stena has signed a contract to coat the hulls of four newbuild RoPax ferries with paint that incorporates the bio-repellent antifouling ingredient Selektope.

On order at the AVIC shipyard in Weihai, China, for 2019/2020 deliveries, the 212 m long vessels will have the capacity to carry 1,000 people onboard (927 passengers and 73 crew), as well as having 3,100 lane meters in a drive-through configuration.

Developed by I-Tech AB, a Swedish bio-tech company founded by a group of researchers from Chalmers University of Technology and the University of Gothenburg), Selektope’s pharmacological action repels barnacle settlement on ships’ hulls by temporarily stimulating the barnacle larvae’s swimming behavior. It is fully approved under the EU’s Biocidal Products Regulation.

To date, marine coating products containing Selektop have been applied to over 150 vessels including; tankers, containerships and LNG carriers, in a series of newbuilding and over-coating projects.

The organic, non-metal compound is the only one of its kind in marine antifouling application. It is characterized by high efficacy at extremely low concentrations (0.1% w/w), ultra-low leaching and flexibility to boost copper-based paint formulations or to replace copper completely.

Tests have shown that anti-fouling paints containing Selektope offer superior hard fouling protection, resulting in lower water resistance and decreased fuel consumption, in addition to lower maintenance costs. Selektope repels barnacles even when ships are idle.

“We are honored that a pioneer of sustainability in commercial shipping such as Stena RoRo has chosen a Selektope-containing hull coating product for its newbuild program. Their investment in a premium antifouling product that contains Selektope will deliver strong antifouling performance with the additional benefit that their high-activity vessels will have the best protection from barnacle invasion.” says Philip Chaabane, CEO I-Tech AB.

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