3 ms·
I'm surprised no-one has mentioned rotor sails yet https://en.wikipedia.org/wiki/Rotor_ship?wprov=sfla1 https://en.wikipedia.org/wiki/Rotor_ship?wprov=sfla1
by gh55 5y ago
I'm surprised no-one has mentioned rotor sails yet https://en.wikipedia.org/wiki/Rotor_ship?wprov=sfla1 https://en.wikipedia.org/wiki/Rotor_ship?wprov=sfla1