Surface effect vessel hull

A surface effect vessel hull comprising;

• two catamaran hulls joined by a deck, each catamaran hull defining a longitudinal dimension;
• each said catamaran hull comprising a bottom having an exterior surface, opposing sides attached to said bottom and extending upwardly therefrom and a transom connecting said sides and being attached to and extending upwardly from said bottom, a step extending inwardly from said bottom generally perpendicular to said longitudinal dimension, said step lying in a plane passing through said hull generally transverse to said longitudinal dimension defining a bow portion extending forward of said plane and an air cushion portion extending rearwardly of said plane;
• said bow portion of each said catamaran hull bottom comprising a first face and a second face joined to form a V-shape that extends from proximal said bow to said step, a line formed by said intersecting faces defining a keel of said bow portion, said first and second faces each defining an angle with a horizontal plane passing through said keel, said angle at a cross-section proximal said bow is at least 45 degrees, said angle diminishing to less than 25 degrees at said step;
• said air cushion portion of each said catamaran hull bottom having a recess formed therein, said recess extending inwardly from said exterior surface of said bottom, said recess extending rearward from said step to proximal said transom, said recess defining secondary catamaran hull sections extending from said step to said transom,
• pressurized air generation means connected in fluid flow relation to said air cushion recess.