Abstract: There is disclosed an inverted bottom structure having generally convex, longitudinal buttock and waterlines lines which creates a venturi structure and a variable pressure/suction situation along the boat hull bottom. The under sides of the boat hull are highly concave resulting in the varying speed of flow which limits the throw-out of water wake while the inverted bottom of the boat hull eliminates turbulent, drag flow. The depth of the longitudinal bottom channels progressively deepens, thereby encompassing a growing volume of smooth water flowing aft in the channels which creates inertia lateral resistance while causing minimal increase in resistance to forward movement. The finely contoured, longitudinal, horizontal and cross sectional lines create a controlled flow situation whereby uncontrolled turbulent flow is replaced with controlled laminar flow, introducing an unprecedented reduction in resistance, to forward movement per displacement, and a profound increase in lateral resistance.