Using sails and Flettner rotors that utilize the Magnus Effect, researchers are exploring ships that can harness wind power for propulsion. German engineer Anton Flettner first built a ship in 1922 using spinning cylinders to generate propulsion from the Magnus Effect. A new ship concept aims to reduce weight by 20% and carbon dioxide emissions by 9% through wind-powered propulsion and use of strong, lightweight materials and cargo.

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Using sails for cargo ships is a concept which has been under research for
quite some time now.

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Wind is the cheapest, most powerful, and greenest source of energy on the high seas.

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*Flettner rotors are special vertical spinning cylinders which utilize
the Magnus Effect for ship propulsion
German Engineer Anton Flettner was the first to build a ship in 1922 using Magnus effect propulsion.

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The ship concept also utilizes new materials such as extra high tensile steel and alloys, and composites,
and carries lighter containers and less fuel for a total reduction of 20% weight and 9% carbon-dioxide.