Airplanes deploy revers thrusters when landing which are basically just shaped metal shields that move into place behind the engines to provide reverse thrust and slow the plane.

But adding a fan on a sailboat is seen as stupid and doesn't work.

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[–] 39 points 3 weeks ago* (1 child)

A fan on a sailboat totally works. You just have to aim the airflow behind the boat and not at the sail. Like those swamp boats in Florida.

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