https://cdn.pixabay.com/photo/2018/03/20/06/33/palms-3242342_960_720.jpgThe Finnish business has made “rotor sails” — composite cylinders about 33 yards (30 meters) tall that happen to be equipped on ship decks and spin in the breeze. Air strain distinctions on reverse sides in the whirring units enable push a vessel ahead. The IMO respond