Taufe: Das größte Solarboot der Welt

The solar boat "PlanetSolar" is seen during its christening and launch ceremony at the HDW shipyard in Kiel March 31, 2010. The largest solar boat in the world was build by the shipyard of Knierim Yachtbau in Kiel. The 30-metre-long and 16 metre wide catamaran, topped with about 500 square metres of photovoltaic solar panels, will start its maiden voyage around the world in 2011. REUTERS/Christian Charisius (GERMANY - Tags: BUSINESS ENERGY ENVIRONMENT SCI TECH) © REUTERS | REUTERS

The solar-powered "Planetsolar" yacht is seen during the launching at Kiel, northern Germany, on Wednesday, March 31, 2010. The world's largest solar-powered catamaran is 31 meter (102 ft) long, 15 meter (29 ft) broad and 7.5 meter (25 ft) high. The solar units cover an area of 500 square meters (540 square ft). The "Planetsolar World Tour" will start in 2011. (AP Photo/Heribert Proepper) © AP | AP

The solar-powered "Planetsolar" yacht is lowered into the water in Kiel, northern Germany, on Wednesday, March 31, 2010. The world's largest solar-powered catamaran is 31 meter (102 ft) long, 15 meter (29 ft) broad and 7.5 meter (25 ft) high. The solar units cover an area of 500 square meters (540 square ft). The "Planetsolar World Tour" will start in 2011. (AP Photo/Heribert Proepper) © AP | AP

The solar-powered "Planetsolar" yacht is lowered into the Baltic Sea in Kiel, northern Germany, on Wednesday, March 31, 2010. The world's largest solar-powered catamaran is 31 meter (102 ft) long, 15 meter (29 ft) broad and 7.5 meter (25 ft) high. The solar units cover an area of 500 square meters (540 square ft). The "Planetsolar World Tour" will start in 2011. (AP Photo/Heribert Proepper) © AP | AP

The solar boat "PlanetSolar" is launched by a crane following its christening at the HDW shipyard in Kiel March 31, 2010. The largest solar boat in the world was build by the shipyard of Knierim Yachtbau in Kiel. The 30-metre-long and 16 metre wide catamaran, topped with about 500 square metres of photovoltaic solar panels, will start its maiden voyage around the world in 2011. REUTERS/Christian Charisius (GERMANY - Tags: BUSINESS ENERGY ENVIRONMENT SCI TECH) © REUTERS | REUTERS

Switzerland's skipper Raphael Domjan sits at the captain's bridge of the "Planetsolar" vessel prior to the launching in Kiel, northern Germany, on Wednesday, March 31, 2010. The world's largest solar-powered catamaran is 31 meter (102 ft) long, 15 meter (29 ft) broad and 7.5 meter (25 ft) high. The solar units cover an area of 500 square meters (540 square ft). The "Planetsolar World Tour" will start in 2011. (AP Photo/Heribert Proepper) © AP | AP

The solar boat "PlanetSolar" is launched by a crane following its christening at the HDW shipyard in Kiel March 31, 2010. The largest solar boat in the world was build by the shipyard of Knierim Yachtbau in Kiel. The 30-metre-long and 16 metre wide catamaran, topped with about 500 square metres of photovoltaic solar panels, will start its maiden voyage around the world in 2011. REUTERS/Christian Charisius (GERMANY - Tags: BUSINESS ENERGY ENVIRONMENT SCI TECH) © REUTERS | REUTERS

The solar boat "PlanetSolar" is seen during its christening and launch ceremony at the HDW shipyard in Kiel March 31, 2010. The largest solar boat in the world was build by the shipyard of Knierim Yachtbau in Kiel. The 30-metre-long and 16 metre wide catamaran, topped with about 500 square metres of photovoltaic solar panels, will start its maiden voyage around the world in 2011. REUTERS/Christian Charisius (GERMANY - Tags: BUSINESS ENERGY ENVIRONMENT SCI TECH IMAGES OF THE DAY) © REUTERS | REUTERS