A new type of wind-assisted propulsion could soon power cargo ships, reducing their dependency on diesel. Researchers are developing giant cylinders that would be mounted on the decks of cargo ships.

The new ships will have a cargo capacity 16% greater than the world’s biggest cargo ship currently afloat, the Emma Maersk. They will be more than 1,312 feet long, more than 193 feet wide and ...

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"We want a plug-and-play type system," she said: Ships come into port, they offload their cargo, the sails are installed as new cargo is loaded in, and the ship heads off again. Quick and easy.

Cargo ships pump millions of tonnes of carbon dioxide into the atmosphere. ... “There are more and more wind technologies coming out all the time for different ship types,” she says.

While roughly 125 methanol-burning ships are now on order at global shipyards from Maersk and other companies, that is just a tiny portion of the more than 50,000 cargo ships that ply the oceans ...