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Solar-powered catamaran completes journey to study Gulf Stream with stop in Paris

The world's largest solar-powered boat has docked on the banks of the Seine River, its final port of call after a three-month voyage across the Atlantic Ocean to study how the Gulf Stream and climate change could influence each other.

The 102-foot-long (31-meter-long) Turanor PlanetSolar catamaran looks like one of Darth Vader's TIE Fighters turned on its side.

Starting from Miami in June, University of Geneva scientists sailed up the eastern seaboard, then across the Atlantic, taking water and air measurements that should allow them to better understand the complex interaction between ocean and atmosphere.

Martin Beniston is the expedition's chief climatologist and head of the University of Geneva's Institute for Environmental Sciences.

The $20 million PlanetSolar's deck is covered with photovoltaic panels that charge a gigantic lithium ion battery.