The Contractor Immo Strohler built a wave-piercing catamaran of 85 tons, Tûranor PlanetSolar able to circumnavigate the world using only solar energy, which was opened in early March 2010 in Kiel (Schleswig-Holstein) . Immo Strohler launched the project in 2008 with the head of the shipyard Gunnar Knierim, with a budget of 12.5 million euros. The company specializes in plastic shells and innovative developments has built in 14 months and the largest solar boat in the world, consisting of 20.6 tonnes of carbon fiber, 11.5 tons of foam core and 23 tons of resin.
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