The world's largest solar-powered trimaran, PlanetSolar, will not have sails. Instead of wind it will rely on the power of the sun to circumnavigate the world in 140 days.

Oliver Dickinson for IBM/ProMare The Mayflower Autonomous Ship is in the Atlantic after a stop-over in the Isles of Scilly The 50ft (15m) long solar-powered trimaran is capable of speeds of up to ...

The craft was likely to stay in Halifax for a week or two, managers said. The 50ft (15m) long solar-powered trimaran is capable of speeds of up to 10 knots (20km/h) and was navigated by on-board ...