"Using today's technology, it's possible to make big sails, and to control them automatically," UT professor Kiyoshi Uzawa told DigInfo. "Also, navigation technology includes networked maritime information and weather forecasting, so ships like this can travel safely. Using wind energy, as in old-fashioned sailing ships, is actually feasible."
"The sails have a curved surface, and they need to be hollow, so they can expand and contract. So they don't use canvas, like conventional sails. Instead, they use aluminum and Fibre-reinforced plastic, which makes them rigid. In other words, with this concept, a ship has wings, like an aircraft."
"These sails cost about US$2.5 million each, but they can reduce fuel consumption by over 25%. In that case, the cost of these sails can be recovered in 5-10 years. We've finished our basic research, so over the next two years, we'd like to build a half-size prototype, to check that this structure is practical. Ultimately, we're aiming for a sea voyage from 2016 onward."
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