Rotor ships still need to tack for headwinds, but not to the same degree as conv...

		jtuente on Aug 31, 2018 \| parent \| context \| favorite \| on: Maersk installed 100-foot-tall rotating sails on o... Rotor ships still need to tack for headwinds, but not to the same degree as conventional sails. https://en.wikipedia.org/wiki/Tacking_(sailing)