this is a sailboat and those are sails
Danish giant Maersk Tankers said Thursday it has installed 100-foot-tall rotating cylinders on one of its product tankers, adding devices that are effectively high-tech sails that could cut the vessel’s fuel bill by up to 10%. If the system proves out during testing, Maersk could use the technology on dozens of ships in its 164-tanker fleet.
The WSJ notes that Maersk spends over $3 billion on fuel a year, so a 10 percent reduction fleet-wide could result in massive savings, more than enough to cover the cost of up to €2 million of installing rotor-sails on a ship.
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