Use fuel we can’t use elsewhere? They use this refuse fuel because countries literally have laws banning their use within their maritime boundaries, because they’re just that awful to burn. This shit fuel is used in international waters precisely because there are no international laws banning this.
Many use kites? The ship with the kites were a proof of concept, not a widely adopted maritime practice.
They also use the fuel we can’t use elsewhere and many do in fact use wind power in the form of giant kites when the wind is appropriate.
Use fuel we can’t use elsewhere? They use this refuse fuel because countries literally have laws banning their use within their maritime boundaries, because they’re just that awful to burn. This shit fuel is used in international waters precisely because there are no international laws banning this.
Many use kites? The ship with the kites were a proof of concept, not a widely adopted maritime practice.