China has delivered the world's first 10,800-vehicle car carrier equipped with a solar power system, combining photovoltaic technology with LNG dual-fuel propulsion.
That “source” is some NASA tutorial that just states that quote without any elaboration at the bottom. I don’t know how that passes as a source at all nor is it generally applicable in
modern ships.
On the other hand there are multiple ships currently using these as additional propulsion system (as you can see further below in the wiki article). Flettners inital prototype used rotors as exclusive propulsion system. One could also use a kite or a sail by using the wind in favourable conditions.
That “source” is some NASA tutorial that just states that quote without any elaboration at the bottom. I don’t know how that passes as a source at all nor is it generally applicable in modern ships.
On the other hand there are multiple ships currently using these as additional propulsion system (as you can see further below in the wiki article). Flettners inital prototype used rotors as exclusive propulsion system. One could also use a kite or a sail by using the wind in favourable conditions.