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A transonic hull having a bow, a stern, a longitudinal length therebetween, side surfaces extending from the bow to outboard portions of the stern, a lower surface extending between the side surfaces, the transonic hull having a submerged volume with an approximately triangular shape in planview wit

A transonic hull having a bow, a stern, a longitudinal length therebetween, side surfaces extending from the bow to outboard portions of the stern, a lower surface extending between the side surfaces, the transonic hull having a submerged volume with an approximately triangular shape in planview with apex adjacent the bow and a base adjacent the stern, and an approximately triangular shape in side view when in motion with a base adjacent the bow and an apex adjacent the stern.

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1. A transonic hull having a bow, a stern, a longitudinal length therebetween, side surfaces extending from said bow to outboard portions of said stern, a lower surface extending between said side surfaces, said transonic hull having a submerged volume with an approximately triangular shape in planv

1. A transonic hull having a bow, a stern, a longitudinal length therebetween, side surfaces extending from said bow to outboard portions of said stern, a lower surface extending between said side surfaces, said transonic hull having a submerged volume with an approximately triangular shape in planview with apex adjacent said bow and a base adjacent said stern, and an approximately triangular shape in side view when in motion with a base adjacent said bow and an apex adjacent said stern.2. The transonic hull of claim 1 further characterized in that the hydrodynamic regimes during said motion include a supercritical regime with a speed to length ratio greater than approximately 1.35, a hypercritical regime with a speed to length ratio greater than approximately 2.0 and a transplanar regime with a speed to length ratio of greater than approximately 3.0.3. The transonic hull of claim 1 wherein the weight-to-displacement ratio is within a range having an upper value of approximately 100 and a lower value of approximately 50.4. The transonic hull of claim 1 further characterized in that said lower surface in side view has a principal length extending from a first station adjacent said bow to a second station upstream of said stern, and a trim-inducing segment length extending from said second station rearwardly towards the bottom of said stern, with said segment length having a local beam approximately equal to the beam of a base adjacent said stern, with the lower surface on said trim inducing segment length being inclined upwardly and to the rear of said principal length by a small negative angle, whereby a downwardly force adjacent said stern tends to raise the bow of said hull when in motion in the hypercritical and transplanar hydrodynamic regimes.5. The transonic hull of claim 4 in which said small angle is approximately 5°.6. The transonic hull of claim 4 in which the angle between said principal length and the water surface is approximately 2° with the bow deeper than the stern when operating in said hypercritical hydrodynamic regime, and in that said small negative angle of said segment length is approximately 4° relative to said principal length.7. The transonic hull of claim 1 in which a trailing flap is provided at the bottom of said stern with an overall athwarship flap beam approximately equal to the beam of said base adjacent said stern and a flap chord approximately equal to 2.5% of said longitudinal length of said hull.8. The transonic hull of claim 7 in which said trailing flap is set at a first angle approximately parallel to said lower surface in said supercritical regime, is reset at second angle inclined upward with respect to said first angle when in said hypercritical regime, and reset at a third angle inclined upward with respect to said second angle in said transplanar regime.9. The transonic hull of claim 1 in which said hull when floating in water without motion has a waterplane area with a center of gravity located at approximately 40% of the length of said waterplane measured from said stern, and a centroid of waterplane area located at approximately 33% of said length of said waterplane, measured from said stern.10. The transonic hull of claim 2, in which a trailing flap is provided on the lower edge of said transom and is set at a first angle inclined downwardly by a small amount in respect to said trim inducing segment length in said supercritical speed, and is reset to be approximately parallel to said segment in said hypercritical regime, and is reset to be inclined at a small negative angle relative to said segment in said transplanar regime.11. The transonic hull of claim 1 being characterized in having a shallow stern draft in static conditions, and having propulsive means capable of imparting propulsive forces to generate forward motion to said hull to at least two speed regimes to thereby develop in dynamic conditions different types of hydrofields with corresponding different levels of hydrodynamic efficiencies, including a supercritical regime in which:said propulsive means imparts a first propulsive force by which said hull reaches a supercritical speed; by virtue of said speed, the draft at said stern relative to the supercritical dynamic water level below said stern is substantially eliminated; with the deep draft of said bow, relative to its adjacent supercritical dynamic water level being approximately the same as said deep draft in said static condition; with the hull's supercritical dynamic waterplane remaining with an approximately triangular shape; with the wetted side surface area and lower wetted surface area in said supercritical regime remaining approximately the same as in said static condition; with substantial portion of said lower surface retaining approximately the same negative angle with respect to the supercritical dynamic water level as in said static condition; and with said principal portion of said lower surface in said dynamic condition experiencing a substantial upward pressure force having a forwardly oriented force component which pushes said hull forward cooperating with said propulsive means in imparting said forward motion in said supercritical regime resulting in a first level of hydrodynamic efficiency. 12. The transonic hull of claim 11 further characterized in that said hydrofields include a hypercritical regime faster than said supercritical regime and in which:said propulsive means impart a second propulsive force higher than said first propulsive force; with the draft of said hull in said hypercritical regime adjacent said bow, and the wetted area of the side surfaces of said hull being substantially reduced relative to that in said supercritical regime; with the hull's dynamic waterplane shape in said hypercritical regime remaining substantially the same as in said supercritical regime; with the stern draft of the lower surface in said hypercritical regime remaining substantially unchanged as in said supercritical regime; with the angle between said substantial portion of said lower surface and said dynamic waterplane in said hypercritical regime remaining negative but substantially reduced relative to said negative angle in said supercritical conditions; with the forwardly pressure component on said bottom surface being substantially reduced; and with the combined effects of the above specified conditions yielding an efficient hypercritical regime faster than said supercritical regime. 13. The transonic hull of claim 12 further characterized in that said hull achieves an efficient transplanar regime and in which:said propulsive means impart a third propulsive force higher than said second propulsive force; with the draft of said hull adjacent said bow being eliminated and with a lower portion of said bow being raised above the dynamic water level in said transplanar regime; with the hull's dynamic waterplane being changed in said transplanar regime to an approximately polygonal shape having at lest four sides, with substantially symmetric right and left sides, an athwarship side located adjacent said stern, and a shorter side adjacent said bow; with the stern draft of said rear portion of said lower surface in said transplanar regime remaining substantially the same as in said hypercritical regime; with the wetted side surface in said transplanar regime being reduced with respect to said hypercritical regime; with the wetted area of the lower surface of said hull in said transplanar regime being substantially reduced relative to that in said hypercritical regime; with the angle between a major portion of said lower surface and the dynamic water level in said transplanar regime being a small positive angle smaller than said negative angle; with the pressure component on said wetted lower surface being rearwardly oriented; and with the combined effects specified above yielding an efficient transplanar regime faster than said hypercritical regime. 14. A transonic hull having a submerged portion with a bow, a stern, and a length therebetween, said submerged portion being characterized in having:an approximately triangular waterplane at water level with an apex adjacent said bow and a base adjacent said stern; an approximately triangular profile in side view when in motion with apex adjacent said stern and a deep draft adjacent said bow; and a downwardly facing surface having right and left triangular longitudinal surface elements with their bases adjacent said stern and their apex adjacent said bow. 15. The transonic hull of claim 14 further characterized in having a third central triangular longitudinal surface element with base adjacent said stern, said third element being located between said right and left elements.16. The transonic hull of claim 14 further characterized in having longitudinal right and left side surface elements, and in having right and left elongated polygonal longitudinal elements extending between and connecting said side surface element with the corresponding right and left triangular elements of said downwardly facing surface of said submerged portion of said hull.17. An all-weather transonic hull having a bow, a stern, and a length therebetween, a static waterplane at water level when floating without motion in calm water, with said hull having:an approximately triangular shape in said static waterplane with apex adjacent said bow and a base adjacent said stern; side surfaces extending from said bow to the outer portions of said stern; lower surfaces extending between the lower regions of said side surfaces; an upper surface portion extending between at least the forward portion of the upper regions of said side surfaces; with said upper surface portion, the portion of said bottom surface below said upper surface portion, and the side surface portions therebetween enclosing therein a forward hull volume; with said forward volume having an upper volume portion above said static waterplane and a lower volume portion below said static waterplane; and an entry angle of said static waterplane adjacent said bow is approximately 13° with a free board no higher than approximately 4.2% of the length of the hull forward of the 80% station of the hull measured from said stern. 18. The hull of claim 17, further characterized in that the volume enclosed by said hull above said waterplane between the 50% and 80% longitudinal stations measured from the stern forward is no greater than approximately 40% of the volume of said hull which is below static waterplane, whereby the pitch and heave characteristics of said hull in an adverse sea are further enhanced.19. The transonic hull of claim 17 further characterized in that:the portion of said hull below said static waterplane envelopes a first volume of displaced water; and in that the volume enclosed by said hull above said waterplane forward of the 80% longitudinal station measured forwardly from the stern being no greater than approximately 20% of said first volume, whereby the penetration against sea waves and pitch characteristics of said hull in an adverse sea are favorable. 20. The transonic hull of claim 17 further characterized in that the heavy components of said hull including powered propulsion engine means to move said hull and fuel tank means are located adjacent to one of said stern and said bow and away from the midbody region of said hull, whereby the pitch and yaw inertia of said hull are increased, and the pitch and control characteristics of said hull in an adverse sea are enhanced.21. An all-weather transonic hull having a bow, a stern, and a length therebetween, a static waterplane at water level when floating without motion in calm water, with said hull having:an approximately triangular shape in said static waterplane with apex adjacent said bow and a base adjacent said stern; side surfaces extending from said bow to the outer portions of said stern; lower surfaces extending between the lower regions of said side surfaces; an upper surface portion extending between at least the forward portion of the upper regions of said side surfaces; with said upper surface portion, the portion of said bottom surface below said upper surface portion, and the side surface portions therebetween enclosing therein a forward hull volume; with said forward volume having an upper volume portion above said static waterplane and a lower volume portion below said static waterplane; and the ratio of the volume of said upper volume portion to said lower volume portion being no greater than approximately 2.8. 22. The structure of claim 21, further characterized in that the ratio of said upper volume portion to said lower volume portion decreases forwardly of the 80% station measured from said stern.