The Oceanbird Wing 560 isn’t a wing, but it isn’t a sail either. When it’s first assembled a few months from now in a shipyard just north of Malmö, Sweden, it’ll be 40 meters high with a 560-square-meter surface and will weigh around 200 metric tons. Its creators call it a wingsail, and they think it’s the future of sea travel.
“It’s more like an airplane wing that you put on top of a ship rather than a normal sail, that’s why we call it a wingsail,” says Niclas Dhal, managing director of Oceanbird.
The wingsail consists of two parts: a rigid main core and a flap that draws air onto
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