[franole]

Related discussion [1] about using Rotor ships [2] and the Magnus effect [3] to reduce carbon emissions and shipping costs. IMHO a much more interesting tech/physics phenomenon :)

[1] https://news.ycombinator.com/item?id=17885284

[2] https://en.wikipedia.org/wiki/Rotor_ship

[3] https://en.wikipedia.org/wiki/Magnus_effect