In September 2010, the world's largest solar powered boat -- the TÛRANOR PlanetSolar -- set sail from Monaco to become the first boat to circumnavigate the globe using only the sun's power. Last month, it finished its journey where it began.
According to gizmag.com, a crew of five piloted the 102-foot long, 49-foot wide vessel, which is covered in 5,780 sqare feet of solar panels. These provide power to four electric motors (two located in each hull), that have a maximum output of 120 kW and can propel the boat to a speed of 14 knots. It is constructed mainly of a light yet durable carbon fiber-sandwich material.
Photos courtesy of planetsolar.org