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.
The boat was renamed Race for Water in 2015, after the name of the Foundation which now operates it. it is now dedicated to water conservation missions and to prevent the oceans from plastic pollution.
On 27 September 2010, Tûranor PlanetSolar set off from Monaco to circumnavigate the globe solely with the aid of solar power. One aim of the project was to focus public awareness on the importance of renewable energies for environmental protection.
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.
According to wikipedia