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Rotor sail-sail

8-9

Technology Description

Sails can alleviate engine requested power for ship propulsion.
Flettner Rotor Sails is a technology that exploits the Magnus effect, which results from a pressure difference created by air speed differences on each side of the rotor, resulting in a lift force perpendicular to the wind flow direction. This force can be harnessed to reduce fuel consumption. This technology offers higher efficiency when applied to slow-steaming vessels.

Relevance for Net Zero

This is a promising technology to use wind power and reduce shipping energy consumption, while requiring low maintenance. The rotors complement the power provided by the engine. The demonstrated fuel consumption reduction is on the order of 5-8%, with the potential to reduce consumption by up to 12-20% (http://www.norsepower.com/ and http://www.greencarcongress.com/2019/10/20191026-norsepower.html ).

Key Countries

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