'Spinning sail' rebooted to cut fuel and make ocean tankers greener

clock • 3 min read

Century-old rotating columns fixed to ship's deck interact with wind to provide forward thrust and could make 10 per cent fuel saving

An ocean-going tanker is to be fitted with a type of "spinning sail" invented almost a century ago in a step that could lead to more environmentally friendly tankers worldwide. The unusual sails are...

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