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Re: Sailing using water current
On the physic side, it is the aerodynamic lift force of the fluid effects on the foil (airfoil) as if of the airplane or of the sail going into the wind. A google may give much more info. As of physic, water and air are both fluid, but water are 1000 times the density, the force.
The setup is a water hose on left side of a manger, the debris stub are the result of the turbulence when the water hits the back (right) wall, As you may notice that 'boats' start speeding up when they pass the turbulence area.