but it is true? https://newt.phys.unsw.edu.au/~jw/sailing.html https://newt.phys.unsw.edu.au/~jw/sailing.html https://www.boatdesign.net/threads/tacking-downwin

but it is true? https://newt.phys.unsw.edu.au/~jw/sailing.html https://newt.phys.unsw.edu.au/~jw/sailing.html https://www.boatdesign.net/threads/tacking-downwind-faster-than-the-wind.24761/ https://www.boatdesign.net/threads/tacking-downwind-faster-t...