Giant solar-powered yacht gets sea-trialed

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Intensive sea trials are under way as the world's largest solar-powered yacht prepares to circumnavigate the globe.

As heavy as a whale and 100 feet in length, the vessel is adorned with 5,780 square-feet of photovoltaic panels - enough to cover more than two tennis courts - that its crew hope will enable it to complete the 50,000-km journey fueled by nothing but energy from the sun.

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