MS Tûranor PlanetSolar, known under the project name PlanetSolar, founded by the Swiss explorer Raphaël Domjan, is the largest solar-powered boat in the world and launched on 31 March 2010.
In May 2012, it became the first solar electric vehicle ever to circumnavigate the globe.
Today the boat is running for the Swiss foundation Race For Water.
The 31-metre boat is covered by 537 m2 of solar panels rated at 93 kW, which in turn connect to two electric motors, one in each hull. There are 8.5 tons of lithium-ion batteries in the ship's two hulls. The boat's shape allows it to reach speeds of up to 10 knots (19 km/h).
The hull was model tested in wind tunnels and was tank tested to determine its hydrodynamics and aerodynamics. The boat was designed to be used as a luxury yacht after the record attempt was finished.
It is currently being used as an ambassador for the project Race for water.
According to en.wikipedia