Some more info on the actual tech: https://www.norsepower.com/technology https://www.norsepower.com/technology and https://www.norsepower.com/rotor-sail-solutio

Some more info on the actual tech: https://www.norsepower.com/technology https://www.norsepower.com/technology and https://www.norsepower.com/rotor-sail-solution https://www.norsepower.com/rotor-sail-solution Obligatory wikipedia entry: https://en.wikipedia.org/wiki/Rotor_ship https://en.wikipedia.org/wiki/Rotor_ship