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Olaf Merk on X: "The spinning metal sails that could slash fuel consumption of cargo ships https://t.co/mvH4QLctIl https://t.co/mv0IwsWWZr" / X
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Dutch windmill with sails blurred due to the rotation, Streefkerk, South Holland, Nethrlands Stock Photo - Alamy
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Spinning sail' rebooted to cut fuel and make ocean tankers greener | Renewable energy | The Guardian
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