That is interesting. I believe the source I remembered was Air-Ventilated Hulls

			Air-Ventilated Hulls One of the promising and realistic methods to drastically reduce drag of marine vessels is based on air lubrication of the ship hull bottom.
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  Note the enhancing effect of a foil under the air pocket. So, I could have my air ventilated Visionary on foils: If enough wind the hull flies in the air. If not it still does, under water ;-)

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