Crab: nooooooo
.
The pressure between the wing and the sea actually INCREASES
Try this:
Air apporaching a normal aerofoil goes up and over, speeds up and the pressure reduces. The air going underneath carries on at normal pressure. Hence lift is produced overall.
However with Wing in Ground Effect (WIG) vehicles what happens in reality is that the sea/ground partially blocks the trailing vortices and decreases the amount of downwash generated by the wing. This reduction in downwash increases the effective angle of attack of the wing (up to 75% in some examples) so that it creates more lift and less drag than it would otherwise. This is ground effect.
An additional bonus is ram pressure. As the distance between the wing and sea/ground decreases, the incoming air is "rammed" in between the two surfaces and becomes more compressed. This effect
increases the pressure on the lower surface of the wing to create additional lift.
A2 brutus?