A rotor sail has the potential to generate fuel savings of up to 20% with multiple rotor sails and operating in areas with favorable wind conditions.Maritime transport emits around 1.000 million tonnes of CO2 annually and is responsible for 2,5% of global greenhouse gas emissions. It is also estimated to increase between 50%-250% by 2050.

This new rotor sail is a modernized version of the Flettner rotor, a spinning cylinder that uses the Magnus effect to harness wind power to propel a ship. When the wind conditions are favorable, the rotor sails allow the main engines to be throttled back, saving fuel and reducing emissions while providing the power needed to maintain speed and voyage time. Rotor sails can be used with new vessels or they can be retrofitted to existing ships.

Given the emission reductions goals for the maritime industry and the possibility of costs savings, these rotor sails have a huge global potential.

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