Definition of wing sail in English:

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wing sail

noun

A rigid or semirigid structure similar to an aircraft wing fixed vertically on a boat to provide thrust from the action of the wind.
Example sentences
  • The biggest problem is how to design a rigid wing sail with minimal weight and complexity penalties.
  • Alex, I agree that in lighter winds a rigid wing sail will not outperform a conventional sail.
  • The aerofoil wing sails may be symmetrical with a fixed camber, or may be asymmetrical with an adjustable camber.

For editors and proofreaders

Syllabification: wing sail

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