Designed to let its passengers enjoy the water in silence, E is a 60-foot sailing catamaran with electric propulsion. It was developed in collaboration with Sunreef and has two steerable 55 kWh engines, linked to a 134 kWh lithium battery and 4.5 kW solar panels. The resulting system can sustain cruising speeds up to 7 knots for up to 6 hours, with a diesel backup generator extending range out to 1,000 nautical miles. Recyclable performance sails allow for wind-powered movement at speeds up to 12 knots, and four en-suite cabins ensure passengers are treated as well as the environment, with chef-prepared meals and plenty of water toys. It's available for charter in the Caribbean from December-April, and from June-September in the Mediterranean.