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Pontoon hulls, devices, systems and methods for providing lower friction surfaces on the hulls to increase the efficiency of motorized pontoon boats moving through the water. The inner side walls and the tunnel ceiling surface between the pontoons in a motorized pontoon boat can be provided with a p

Pontoon hulls, devices, systems and methods for providing lower friction surfaces on the hulls to increase the efficiency of motorized pontoon boats moving through the water. The inner side walls and the tunnel ceiling surface between the pontoons in a motorized pontoon boat can be provided with a plurality of longitudinal vent channels in a U shaped configuration. The vent channels can have open ends facing the rear end (stern) of the water craft and opposite closed ends facing the forward end (bow) of the water craft. As the water craft moves forward, a bubbling effect can occur in low pressure zones about the rear (stern) facing open ends of the plurality of vents to reduce the water surfaces in contact with the pontoon hull surfaces. A plurality of open rear (stern facing) ends of the vents and closed front (bow facing) ends of the vents can be arranged in series with two parallel vent series on a left inner sides of the left pontoon, two parallel vent series on a right inner sides of the right pontoon, and two parallel vent series on top of the tunnel between the pontoons.

대표청구항 ▼

1. A multi-hull water craft, comprising: a superstructure having a bow and a stern with an upper surface having an upper deck and a lower surface;a first longitudinal hull along a left portion of the undersurface of the water craft extending between the bow and the stern;a left longitudinal vent on

1. A multi-hull water craft, comprising: a superstructure having a bow and a stern with an upper surface having an upper deck and a lower surface;a first longitudinal hull along a left portion of the undersurface of the water craft extending between the bow and the stern;a left longitudinal vent on an inner surface on the first longitudinal hull, the left longitudinal vent having an open end facing toward the stern of the water craft with a closed end facing the bow of the water craft;a second longitudinal hull along a right portion of the undersurface of the water craft extending between the bow and the stern;a right longitudinal vent on an inner surface on the second longitudinal hull, the right longitudinal vent having an open end facing toward the stern of the water craft with a closed end facing the bow of the water craft, wherein the open stern facing end of the left longitudinal vent and the open stern facing end of the right longitudinal vent create a lower friction surface for increasing efficiency of the water craft passing through water, wherein the left longitudinal vent includes a plurality of identical left inner side vents in series with one another, and the right longitudinal vent includes a plurality of identical right inner side vents in series with one another. 2. The multi-hull water craft of claim 1, wherein the first longitudinal hull and the second longitudinal hull are two pontoons on a motorized pontoon water craft. 3. The multi-hull water craft of claim 1, wherein the left longitudinal vent includes two series of identical left inner side vents, each of the left series in parallel to one another, and the right longitudinal vent includes two series of identical right inner side vents, each of the right series in parallel to one another. 4. A multi-hull water craft, comprising: a superstructure having a bow and a stern with an upper surface having an upper deck and a lower surface;a first longitudinal hull along a left portion of the undersurface of the water craft extending between the bow and the stern;a left longitudinal vent on an inner surface on the first longitudinal hull, the left longitudinal vent having an open end facing toward the stern of the water craft with a closed end facing the bow of the water craft;a second longitudinal hull along a right portion of the undersurface of the water craft extending between the bow and the stern; a right longitudinal vent on an inner surface on the second longitudinal hull, the right longitudinal vent having an open end facing toward the stern of the water craft with a closed end facing the bow of the water craft, wherein the open stern facing end of the left longitudinal vent and the open stern facing end of the right longitudinal vent create a lower friction surface for increasing efficiency of the water craft passing through water; a tunnel between the first longitudinal hull and the second longitudinal hull; anda middle longitudinal vent on an upper surface of the tunnel, the middle longitudinal vent having an open end facing toward the stern of the water craft with a closed end facing the bow of the water craft. 5. The multi-hull water craft of claim 1, further comprising: a tunnel between the first longitudinal hull and the second longitudinal hull; anda plurality of middle longitudinal vent on an upper surface of the tunnel, each middle longitudinal vent having an open end facing toward the stern of the water craft with a closed end facing the bow of the water craft. 6. The multi-hull water craft of claim 3, further comprising: a tunnel between the first longitudinal hull and the second longitudinal hull; anda plurality of middle longitudinal vent on an upper surface of the tunnel, each middle longitudinal vent having an open end facing toward the stern of the water craft with a closed end facing the bow of the water craft, wherein the middle longitudinal vent includes a plurality of identical middle vents in series with one another. 7. The multi-hull water craft of claim 4, further comprising: an upper left corner longitudinal vent between the inner side of the first longitudinal hull and the upper surface of the tunnel;an upper right corner longitudinal vent between the inner side of the second longitudinal hull and the upper surface of the tunnel. 8. The multi-hull water craft of claim 5, further comprising: a plurality of upper left corner longitudinal vents between the inner side of the first longitudinal hull and the upper surface of the tunnel;a plurality of upper right series of longitudinal vents between the inner side of the second longitudinal hull and the upper surface of the tunnel. 9. The multi-hull water craft of claim 6, further comprising: a plurality of upper left corner longitudinal vents between the inner side of the first longitudinal hull and the upper surface of the tunnel;a plurality of upper right series of longitudinal vents between the inner side of the second longitudinal hull and the upper surface of the tunnel. 10. A multi-hull water craft, comprising: a superstructure having a bow and a stern with an upper surface having an upper deck and a lower surface;a first longitudinal pontoon along a left portion of the undersurface of the water craft extending between the bow and the stern;a second longitudinal pontoon along a right portion of the undersurface of the water craft extending between the bow and the stern; anda plurality of longitudinal vents arranged in a U shaped configuration along inner surfaces of the first and second longitudinal pontoons, and along a top surface of a tunnel formed between the first and the second longitudinal pontoons, each of the longitudinal vents having an open end facing toward the stern of the water craft and a closed end facing the bow of the water craft, wherein the open stern facing ends of the longitudinal vents create a lower friction surface for increasing efficiency of the water craft passing through water. 11. The multi-hull water craft of claim 10, wherein the plurality of longitudinal vents includes: a first parallel pair of two series of the longitudinal vents along an inner facing side of the first longitudinal pontoon;a second parallel pair of plural series of the longitudinal vents along an inner facing side of the second longitudinal pontoon;a middle parallel pair of plural series of the longitudinal vents along a top surface of the tunnel between the first and the second longitudinal pontoons;an upper left corner series of longitudinal vents between the inner facing side of the first longitudinal pontoon and the top surface of the tunnel between the first and the second longitudinal pontoons; andan upper right corner series of longitudinal vents between the inner facing side of the second longitudinal pontoon and the top surface of the tunnel between the first and the second longitudinal pontoons. 12. A method of increasing efficiency of multi-hull water craft, comprising the steps of: providing a superstructure having a bow and a stern with an upper surface having an upper deck and a lower surface;providing a first longitudinal hull along a left portion of the undersurface of the water craft extending between the bow and the stern;providing a second longitudinal hull along a right portion of the undersurface of the water craft extending between the bow and the stern;generating lower friction surfaces in a U shaped configuration of longitudinal vents located along the first and the second longitudinal hulls and the top surface of a tunnel formed between the first and the second longitudinal hulls; andincreasing efficiency of the water craft travelling through the water with low friction surfaces. 13. The method of claim 12, wherein the step of generating the lower friction surfaces includes the steps of: providing a plurality of left longitudinal vents on an inner facing surface of the first longitudinal hull, each of the left longitudinal vents having an open end facing toward the stern of the water craft with a closed end facing the bow of the water craft; andproviding a plurality of right longitudinal vents on an inner facing surface of the second longitudinal hull, each of the right longitudinal vents having an open end facing toward the stern of the water craft with a closed end facing the bow of the water craft. 14. The method of claim 13, wherein the step of generating the lower friction surfaces includes the step of: providing a plurality of top tunnel longitudinal vents on an inner facing surface of the top surface of the tunnel between the first and the second longitudinal hulls. 15. The method of claim 14, further comprising the steps of: providing a plurality of upper left corner longitudinal vents between an inner facing surface of the first longitudinal hull and the top surface of the tunnel, each of the upper left corner longitudinal vents having an open end facing toward the stern of the water craft with a closed end facing the bow of the water craft; andproviding a plurality of upper right corner longitudinal vents between an inner facing surface of the second longitudinal hull and the top surface of the tunnel, each of the upper right corner longitudinal vents having an open end facing toward the stern of the water craft with a closed end facing the bow of the water craft. 16. The method of claim 12, further comprising the steps of: providing two series of identical left inner side vents, each of the left series in parallel to one another; andproviding two series of identical right inner side vents, each of the right series in parallel to one another. 17. The method of claim 16, further comprising the step of: providing a plurality of identical middle vents along the top surface of the tunnel formed between the first and the second longitudinal pontoons. 18. The method of claim 17, further comprising the steps of: providing a plurality of upper left corner vents between the left inner side vents and the top surface of the tunnel; andproviding a plurality of upper right corner vents between the left inner side vents and the top surface of the tunnel. 19. The method of claim 12, further comprising the step of: providing the first longitudinal hull and the second longitudinal hulls as two pontoons on a motorized pontoon water craft.