Sailor takes on Pacific in wave-powered boat

A Japanese sailor has set out from Hawaii for Japan, hoping to complete the 7,000 km (4,400 mile) journey using only the power of the waves beneath his boat.

Garlanded with flowers, 69-year-old adventurer Kenichi Horie waved from the deck of his catamaran-like boat as he set off on the latest of many challenges he has taken on since he became the first Japanese to sail solo across the Pacific in 1962, a video of his departure from Hawaii showed. The vessel for his latest adventure, the Suntory Mermaid II, has two wings in front, which convert the energy from waves into a movement similar to a dolphin's kicks, making it the world's first boat to be powered by the vertical motion of waves. "Twenty years ago while sailing, an accident broke my main mast which actually fell in the sea," the white-haired Horie said before setting sail on Sunday local time from Honolulu. "The boat kept rocking and I thought how great it would be to actually harness the power of those waves to push the boat forward." He plans to reach his destination -- the port of Hino, about 450 km (280 miles) southwest of Tokyo -- at a leisurely pace. "The speed of the boat is just faster than a human walking pace, perhaps not quite a jogging pace. The trip is meant in part to promote the commercial viability of the invention, which will bring a new option to those seeking to travel in an environmentally friendly way.

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