Giant kites could pull cargo ships across the ocean – and slash their carbon emissions
Giant kites could pull cargo ships across the ocean – and slash their carbon emissions

Giant kites could pull ships across the ocean – and slash their carbon emissions | CNN

I once heard of a giant kite technology like this called “sails” but it was retired in favor of fossil fules
Kites are more efficient. For one they can be much larger, but you can also put them at angles that you can't operate a sail at.
Kites don't take up deck space like masts for sails do.