Watercraft hull with entrapment tunnel
AssigneeNavatek, Ltd.
InventorsSteven Loui, Scott Yamashita, Gary Shimozono
Life of this patent
Estimating the term…
Abstract
A watercraft hull has at least one bent entrapment tunnel with an aft portion whose tunnel ceiling is at a higher elevation than portions of the tunnel ceiling immediately in front of it to provide a negative angle of attack with the free surface at design planing speeds.
Claims37
A watercraft hull having at least one bent entrapment tunnel with an aft portion whose tunnel ceiling is at a higher elevation than portions of the tunnel ceiling immediately in front of it to provide negative angle of attack with the free surface at design planing speeds.
A watercraft hull having at least a pair of bent entrapment tunnels formed therein opening downwardly to the free water surface, said tunnels each having a forward position having a positive angle of attack to the free water surface and opening to the air above the free water surface at the bow and an aft portion which joins the forward portion at the lowest elevation of the ceilings of the respective tunnel portions and has a negative angle of attack to the free surface leading aft to higher elevations relative to the free water surface.
Dependencies are inferred from the claim text.