Underwater Wings For Providing Lift To Boats

A boat comprising:

• a motor-powered displacement hull having a deck upwardly supported by a first pontoon and a second pontoon that extend from a bow of the hull to a stern of the hull in a longitudinal direction;
• and
• a hydrofoil system that provides lift to the hull without raising the hull out of the water, the hydrofoil system comprising a pair of laterally opposed aft hydrofoil wings positioned near the stern of the hull on the first pontoon and second pontoon respectively, the aft hydrofoil wings (i) extending laterally inboard towards each other and (ii) having an upper surface with convex curvature extending from the respective first pontoon or second pontoon to an inboard terminal end thereof.

A hydrofoil wing system for a pontoon boat having a first pontoon, a second pontoon, and a deck supported by the first pontoon and the second pontoon, the hydrofoil wing system comprising:

• a first wing having a first terminal end and a second terminal end, the first terminal end of the first wing attached to the first pontoon, an attack angle of the first wing being adjustable at a point of attachment to the first pontoon;
• and
• a second wing having a first terminal end and a second terminal end, the first terminal end of the second wing attached to the second pontoon, an attack angle of the second wing being adjustable at a point of attachment to the second pontoon.