High-speed wave head piercing ship

Abstract

The invention provides a high-speed wave head penetrating ship, and relates to the field of ship engineering, the high-speed wave head penetrating ship comprises a high-speed wave head penetrating ship and a stem post, the bottom edge is in a micro-oval shape, the top is in an inverted triangle shape, the high-speed wave head penetrating ship protrudes towards the head, the side view geometric feature is in a cutting edge shape, and the stem post is of a forward-inclining type structure, a backward-inclining type structure and a vertical type structure. According to the method, the high-speed wave piercing head is designed into a specific geometrical shape, the size of the high-speed wave piercing head meets the cross section area curve distribution requirement of the whole ship, the head protruding length is related to the wavelength and the speed, and the cross section fat and thin degree meets the design parameters of the molded line inflow section, so that the wave-making resistance and the shape resistance during ship navigation are effectively reduced; meanwhile, the seakeeping performance of the ship in the waves is improved, the pitching amplitude, wave attack and splashing are reduced, stall in the waves is reduced, the excellent and comprehensive sailing performance is achieved, the dual technical advantages of high sailing speed and high seakeeping performance are achieved, and the ship is particularly suitable for the high-speed ship in the transition state.

Description

Technical Field

[0001] The present invention relates to the field of ship engineering, and in particular to a high-speed wave-piercing bow ship. Background Art

[0002] As modern shipping and marine operations continue to increase the speed and performance requirements for ships, high-speed vessels are increasingly used in military, rescue, tourism, and other fields. At the same time, the marine environment is becoming increasingly complex, and the navigation requirements for ships in harsh sea conditions are becoming more diverse. High-speed navigation not only faces greater resistance but also challenges brought by complex waves. This requires new breakthroughs in ship design to meet the requirements of high-speed, efficient, and safe navigation.

[0003] Traditional high-speed vessel bow designs, such as the forward-rake bow, offer strong wave resistance, but for a given overall hull length, they result in a short effective waterline length, a suboptimal aspect ratio, and a poor squareness factor, hindering resistance reduction. While the axe-shaped bow can increase effective waterline length and displacement, it also presents challenges such as increased deck wave resistance, significant bow splashing, poor resistance performance, and poor maneuverability, failing to meet the comprehensive performance requirements of modern high-speed vessels.

[0004] Therefore, it is necessary to design a high-speed wave-piercing bow ship to solve the problems of high resistance and poor seakeeping caused by the bow design in the existing technology. Summary of the Invention

[0005] In view of this, the present invention proposes a high-speed wave-piercing bow ship, aiming to solve the problem of how to reduce resistance at high speed and improve seakeeping performance by optimizing the bow design.

[0006] In one aspect, the present invention provides a high-speed wave-piercing bow vessel, comprising:

[0007] A high-speed wave-piercing bow (1) and a stem (2), wherein the stem (2) is located above the high-speed wave-piercing bow (1), the cross section of the high-speed wave-piercing bow protrudes toward the bow, the bottom edge of the high-speed wave-piercing bow ship is slightly elliptical, and the top of the high-speed wave-piercing bow ship is in the shape of an inverted triangle.

[0008] Furthermore, the stem (2) has a forward-inclined structure (2a), and the forward-inclined structure (2a) is connected to the side outer plate of the high-speed wave-piercing bow (1) via an inward-inclined curved surface.

[0009] Furthermore, the stem (2) has a rearward-inclined structure (2b), and the bottom of the rearward-inclined structure (2b) is connected to the inverted triangular area at the top of the high-speed wave-piercing bow (1) through two fold lines, which extend longitudinally and form a transition surface with the outer plate.

[0010] Furthermore, the stem (2) has a vertical structure (2c), and the vertical structure (2c) is arranged in the top center of the high-speed wave-piercing bow (1) in the vertical direction. The stem of the vertical structure (2c) coincides with the forward perpendicular in the side projection and coincides with the longitudinal section line of the hull in the cross-sectional projection.

[0011] Furthermore, the high-speed wave-piercing bow (1) has a side view geometric feature of protruding forward and being knife-edge-shaped, and the width of the portion below the waterline at the front end of the high-speed wave-piercing bow (1) gradually narrows to a sharp point, and forms a water-cutting leading edge, and the water-cutting leading edge gradually expands backward to connect with the main body of the ship, and during the expansion process, a longitudinal angle transition is formed through the first bow fold line (5) and the second bow fold line (6).

[0012] Furthermore, the outer plate of the high-speed wave-piercing bow (1) is connected to the main body of the hull in the longitudinal direction through a first fold line (5) and a second fold line (6), the first fold line (5) and the second fold line (6) are in an inverted V shape in cross section, the bottom elliptical area of ​​the cross section of the high-speed wave-piercing bow (1) is smoothly connected to the keel line, and the top "inverted triangle" area of ​​the cross section of the high-speed wave-piercing bow (1) forms an X-shaped cross-curved surface structure with the outer plate of the forward-leaning structure (2a).

[0013] Furthermore, the volume of the high-speed wave-piercing bow (1) meets the distribution requirements of the cross-sectional area curve of the entire ship, that is,

[0014] And in the formula The distance x1 from the center of the volume of the curve integral to the midship must satisfy the following: x1∈[a1,a2]Lw1. When the speed is lower than the first speed threshold, then x1=a1; when the speed is greater than the second speed threshold, then x1=a2. At the same time, The ratio of the length Ld of the fore and aft endpoints of the curve integral to the effective waterline width b of the hull must satisfy the following requirement: Ld / b ≥ 10;

[0015] Wherein, V is the volume of the high-speed wave-piercing bow (1), A(x) is the cross-sectional area, L wl is the effective waterline length, Ko is the volume coefficient of the wave piercing bow (1);

[0016] The rate of change of A(x) along the length of the ship satisfy:

[0017]

[0018] Among them, k1 is the resistance constant optimized according to the ship type, and the block coefficient of the hull is And must meet C b ≤0.55, where is the total displacement volume of the hull, b is the effective waterline width of the hull, T is the design draft, and n is a positive integer.

[0019] Furthermore, the high-speed wave-piercing bow (1) has a protruding length L p Meet L p =k2×λ, and the wavelength λ, wave speed Cw and water depth h must satisfy the following relationship: Where λ is the wavelength, Cw is the wave velocity, h is the water depth, g is the acceleration of gravity, k2 is the protrusion length proportional coefficient, and k2∈[0.01,0.03].

[0020] Furthermore, the fatness or thinness of the cross section of the high-speed wave-piercing bow (1) is determined by the design parameters of the inflow section of the profile, and the inflow angle θ satisfies When the speed is lower than the first speed threshold, θ = b1, and when the speed is greater than the second speed threshold, θ = b2. At the same time, the cross-sectional area curve of the entire ship is The distance x2 from the first endpoint to the maximum value of the curve must satisfy: x2∈[a3,a4]Lbp. When the speed is lower than the first speed threshold, then x2=a3; when the speed is greater than the second speed threshold, then x2=a4.

[0021] Where b is the effective waterline width of the hull, L j is the length of the hull inflow section, L bp It is the length of the vertical line at the beginning and end of the profile.

[0022] Compared with existing technologies, the present invention offers the following advantages: a high-speed wave-piercing bow vessel, through its unique cross-section, unique bottom and top shapes, and blade-like protrusion towards the bow, combined with different styles of stem posts, effectively reduces wave-making resistance and form drag, enabling higher speeds with equivalent main engine power. Furthermore, wave-making is smooth, with a low bow wave crest height, resulting in less pitching in waves, minimal wave impact and splashing, and minimal "stall." Furthermore, it is easier to achieve an optimal ship-engine-propeller matching relationship, achieving maximum propeller efficiency and significantly improving the vessel's overall performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0024] Figure 1 The figure is a schematic diagram of the side features of an existing forward-leaning bow;

[0025] Figure 2 A schematic diagram of the side features of an existing axe-shaped bow;

[0026] Figure 3 Schematic diagram of the side features of the high-speed wave-piercing bow and bow column 2 of the present invention in the forward-inclined type 2a, the vertical type 2b and the backward-inclined type 2c;

[0027] Figure 4 It is a schematic diagram of the cross-sectional characteristics of the high-speed wave piercing bow of the present invention.

[0028] In the figure: 1 - high-speed wave-piercing bow; 2 - bow column; 2a - forward-leaning structure; 2b - vertical structure; 2c - aft-leaning structure; 3 - bilge line; 4 - axe-shaped bow column; 5 - first bow fold line; 6 - second bow fold line; 7 - hull baseline; 8 - design waterline. DETAILED DESCRIPTION

[0029] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art. It should be noted that, unless there is a conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the implementation regulations.

[0030] Reference Figure 1-4 As shown, in some embodiments of the present application, a high-speed wave-piercing bow vessel includes:

[0031] A high-speed wave-piercing bow (1) and a stem (2), wherein the stem (2) is located above the high-speed wave-piercing bow (1); the high-speed wave-piercing bow has a special cross-section and protrudes toward the bow; the bottom edge of the high-speed wave-piercing bow is slightly elliptical, and the top of the high-speed wave-piercing bow is in the shape of an inverted triangle.

[0032] Specifically, the high-speed wave piercing bow 1's unique cross-section seamlessly transitions with the side and bottom plating via two angled lines, minimizing stress concentration. The hull of the high-speed wave piercing bow 1 can be manufactured using any shipbuilding material, from weldable metal to molded-in-one glass fiber reinforced plastic. The narrow interior space of the high-speed wave piercing bow 1, protruding toward the bow, is reinforced with longitudinal and transverse frame ribs to ensure local strength.

[0033] As you can see, the high-speed wave-piercing bow 1 features a special cross-section and protrudes toward the bow. Combined with the stem pier 2 located above, this design allows the high-speed wave-piercing bow 1 to more effectively break through waves while sailing, significantly reducing the impact of high-speed water on the bow and wave-making resistance. This special cross-section allows water to flow more smoothly through the hull, reducing form drag and enhancing the vessel's overall navigation performance.

[0034] In some embodiments of the present application, the stem (2) has a forward-inclined structure (2a), and the connection between the forward-inclined structure (2a) and the high-speed wave-piercing bow (1) is transitioned to the side outer plate through an independent inward-inclined curved surface.

[0035] Specifically, the angle α between the forward-leaning structure 2a and the horizontal plane is [30°, 45°]. Furthermore, the outer plate at the junction of the forward-leaning structure 2a and the high-speed wave-piercing bow 1 can be provided with additional guide lines on its surface, providing a natural transition to reduce splashing from the bow. Internally, additional support beams are added near the junction, arranged in a triangular pattern, to enhance the overall rigidity of the connection between the forward-leaning structure 2a and the high-speed wave-piercing bow 1.

[0036] It's understood that the forward-inclined structure 2a of the stem 2, connected to the high-speed wave-piercing bow 1, transitions to the side plating via an independent, inward-inclined curved surface. This significantly reduces vertical wave impact during head-on sailing, and allows the bow to quickly emerge from the water during pitching, preventing the bow deck from being affected by waves due to prolonged "burrowing" and thus impacting the safety of the entire vessel. Furthermore, this structure improves the distribution of wave pressure at the bow, indirectly enhancing the local strength of the vessel's front end.

[0037] In some embodiments of the present application, the stem (2) has a backward-inclined structure (2b), and the bottom of the backward-inclined structure (2b) is connected to the inverted triangular area at the top of the high-speed wave-piercing bow (1) through two fold lines, which extend longitudinally and form a transition surface with the outer plate.

[0038] Specifically, the bottom end of the rearward-inclined structure 2b coincides with the end of the upper angle line of the inverted triangle area at the top of the high-speed wave-piercing bow 1, and the angle γ∈[120°, 135°] between the straight line where the rearward-inclined structure 2b is located and the horizontal plane is ensured to have a smaller inflow attack angle between the bow wave crest and the bow column, making the overall shape of the ship more in line with the principles of fluid dynamics, facilitating the rapid separation of the wave crest from the hull, reducing the frontal impact stress, and completely avoiding the vertical impact on the deck, thereby improving the ship's seakeeping performance in high sea conditions.

[0039] It can be understood that the rearward-inclined structure 2b significantly reduces the length of the main deck, which is beneficial to reducing weight, increasing speed and reducing costs.

[0040] In some embodiments of the present application, the stem (2) has a vertical structure (2c), and the vertical structure (2c) is arranged in the top center of the high-speed wave piercing bow (1) in the vertical direction. The stem of the vertical structure (2c) coincides with the forward perpendicular in the side projection and coincides with the longitudinal section line of the hull in the cross-sectional projection.

[0041] It can be understood that the upper and lower endpoints of the vertical structure 2c of the stem 2 are located on a vertical line. This structure is simple and very easy to measure, which helps to reduce the difficulty of construction and improve the error accuracy of the length direction.

[0042] In some embodiments of the present application, the high-speed wave piercing bow (1) has a side view geometric feature protruding forward that resembles a knife edge, and the width of the portion below the waterline at the front end of the high-speed wave piercing bow (1) gradually narrows to a sharp point, forming a water-cutting leading edge, and the water-cutting leading edge gradually expands backward to connect with the main body of the ship, and during the expansion process, a longitudinal angle transition is formed through the first bow fold line (5) and the second bow fold line (6).

[0043] Specifically, the bow-protruding portion of the high-speed wave piercing bow 1 has a blade-like geometric feature in side view. Its water-breaking leading edge adopts a unique streamlined design, conforming to the principles of fluid dynamics. Its spatial shape closely matches the streamlines of the water flow, ensuring excellent performance. The curved surface is naturally transitioned to the side plating and bottom plating via two angled lines, avoiding stress concentration. The hull of the high-speed wave piercing bow 1 can be manufactured using any shipbuilding material, from highly weldable metal to molded fiberglass-reinforced plastic. The narrow interior space of the bow-protruding portion of the high-speed wave piercing bow 1 is reinforced with longitudinal and transverse frame ribs to ensure local strength.

[0044] It can be understood that the high-speed wave-piercing bow 1, when protruding forward, has a geometrical feature in a side view that resembles a blade. The front portion below the waterline narrows to a sharp point to form a water-breaking leading edge, and then forms a longitudinal angle transition through the first bow fold line 5 and the second bow fold line 6. This allows the ship to encounter waves at a very small angle of attack, whether in the waterline direction or the longitudinal section direction, effectively reducing resistance in waves and minimizing "stall" in waves.

[0045] In some embodiments of the present application, the outer plate of the high-speed wave piercing bow (1) is connected to the main body of the hull in the longitudinal direction through a first fold line (5) and a second fold line (6), the first fold line (5) and the second fold line (6) form two oblique sides of an inverted V shape in the cross section, the bottom elliptical area of ​​the cross section of the high-speed wave piercing bow (1) is smoothly connected to the keel line, and the top "inverted triangle" area of ​​the cross section of the high-speed wave piercing bow (1) forms a special X-shaped cross-curved surface structure with the outer plate of the forward-leaning structure (2a).

[0046] Specifically, the high-speed wave piercing bow 1 is longitudinally connected to the main hull via a first bow fold line 5 and a second bow fold line 6. At the connection point, longitudinal ribs are installed within the main hull corresponding to the first and second bow fold lines 5 and 6. These ribs interact with the strong frame structure within the high-speed wave piercing bow 1 to form a mesh, enhancing structural integrity and connection effectiveness. The elliptical area at the bottom of the cross-section of the high-speed wave piercing bow 1 and the keel line are connected to form a single structure via the gradually curved surface of the keel plate.

[0047] It can be understood that the line connecting the first end point of the first fold line 5 and the first end point of the second fold line 6 of the high-speed wave piercing bow 1 is an oblique line, which is matched with the bottom contour line shaped like a knife blade. This special structure makes the wave piercing bow 1 always consistent with the flow direction of the wave flow, and excellent resistance performance can be achieved regardless of whether the ship has a longitudinal tilt.

[0048] In some embodiments of the present application, the volume of the high-speed wave-piercing bow (1) meets the distribution requirements of the cross-sectional area curve of the entire ship, that is,

[0049] And in the formula The distance x1 from the center of the volume of the curve integral to the midship must satisfy the following: x1∈[-6.5%,-2%]Lwl, with the upper limit taken when the speed is low and the lower limit taken when the speed is high. The ratio of the length Ld of the fore and aft endpoints of the curve integral to the effective waterline width b of the hull must satisfy: Ld / b ≥ 10.

[0050] Wherein, V is the volume of the high-speed wave-piercing bow (1), A(x) is the cross-sectional area, L wl is the effective waterline length, Ko is the volume coefficient of the wave piercing bow (1).

[0051] The rate of change of A(x) along the length of the ship satisfy:

[0052]

[0053] Where k1 is the resistance constant optimized according to the ship type, and the block coefficient of the hull is And must meet C b ≤0.55, where is the total displacement volume of the hull, b is the effective waterline width of the hull, T is the design draft, and n is a positive integer.

[0054] Specifically, the design of the high-speed wave-piercing bow's volume takes into account the distribution requirements of the cross-sectional area curve across the entire ship. This requires not only meeting basic buoyancy and flotation requirements but, more importantly, balancing resistance minimization and seakeeping. The total length of the integral curve of the inflow section must be greater than half the effective waterline length, and the shape of the volume distribution curve of the inflow section must be slightly convex or close to a straight line, avoiding any "bumps." The integral curve of the aft outflow section must be no less than 40% of the effective waterline length, and the shape of the volume distribution curve of the outflow section should not shrink too rapidly.

[0055] It's understandable that the volume of the high-speed wave-piercing bow meets the cross-sectional area distribution requirements for the entire ship. This rational volume design not only makes the ship's buoyancy more evenly distributed in the water, but also significantly improves the ship's seakeeping performance. This optimized volume design comprehensively balances resistance, propulsion, and seakeeping, enhancing the ship's overall performance.

[0056] In some embodiments of the present application, the length L of the high-speed wave-piercing bow (1) protruding toward the bow is p Meet L p =k2×λ, and the wavelength λ, wave speed Cw and water depth h must satisfy the following relationship: Where λ is the wavelength, Cw is the wave velocity, h is the water depth, g is the acceleration of gravity, k2 is the protrusion length proportional coefficient, and k2∈[0.01,0.03].

[0057] Specifically, once the bow protrusion length of the high-speed wave-piercing bow (1) is determined, to ensure the structural integrity of the protrusion, the narrow space within it is reinforced with longitudinal and transverse frame ribs. These ribs, combined with the surrounding frame, form a mesh structure to ensure local strength. Furthermore, a solid round steel anti-collision structure, integrated with the stem, is installed at the front edge of the protrusion to reduce damage to the main structure behind the vessel in the event of a collision.

[0058] It is understandable that the bow protrusion length of the high-speed wave-piercing bow 1 is reasonable and matches the wavelength and speed. This helps the ship utilize the phase difference of the waves during navigation to partially offset the interference of the bow wave, further reducing wave resistance, lowering fuel consumption, and improving the ship's overall navigation efficiency.

[0059] In some embodiments of the present application, the thickness of the cross section of the high-speed wave piercing bow (1) is determined by the design parameters of the inflow section of the profile line, and the inflow angle Satisfies: θ1∈[12.5°,22°] for monohull, θ2∈[4°,8°] for catamaran, θ3∈[8°,15°] for trimaran, take the upper limit when the speed is low, take the lower limit when the speed is high. At the same time, the cross-sectional area curve of the whole ship The distance x2 from the first endpoint to the maximum value of the curve must satisfy: x2∈[50%,60%]Lbp. If the speed is low, take the lower limit; if the speed is high, take the upper limit.

[0060] Where b is the effective waterline width of the hull, L j is the length of the hull inflow section, L bp It is the length of the vertical line at the beginning and end of the profile.

[0061] Specifically, the cross-sectional fatness of the high-speed wave piercing bow 1 is determined by the design parameters of the inlet section of the profile. During design, with optimal performance as the goal, the optimal fatness was determined through fluid dynamics simulation analysis and mathematical equation analysis of models with different fatness levels. During manufacturing, computer digital lofting and laser cutting are used to precisely control the dimensions of each cross-sectional area of ​​the high-speed wave piercing bow 1 according to design requirements to ensure the expected hydrodynamic performance.

[0062] It is understood that the fatness or thinness of the cross-section of a high-speed wave-piercing bow is determined by the design parameters of the inflow section of the profile. A reasonable fatness or thinness can optimize the inflow angle, inflow section length, and volume distribution of the integral curve. This allows the water to encounter the ship at a smaller angle of attack and separate from the ship in the shortest possible time during navigation, thereby reducing traveling wave resistance and improving the ship's hydrodynamic performance.

[0063] It should be noted that:

[0064] In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known structures and technologies are not shown in detail so as not to obscure the understanding of this description.

[0065] Furthermore, those skilled in the art will appreciate that although some embodiments described herein include certain features and not other features included in other embodiments, the combination of features from different embodiments is meant to be within the scope of this application and to form different embodiments.

[0066] The above description is merely a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A high-speed wave-piercing bow vessel, characterized in that: include: A high-speed wave-piercing bow (1) and a stem (2), wherein the stem (2) is located above the high-speed wave-piercing bow (1), the cross section of the high-speed wave-piercing bow protrudes toward the bow, the bottom edge of the high-speed wave-piercing bow ship is slightly elliptical, and the top of the high-speed wave-piercing bow ship is in the shape of an inverted triangle.

2. The high-speed wave-piercing bow vessel according to claim 1, characterized in that: The stem (2) has a forward-leaning structure (2a), and the forward-leaning structure (2a) is connected to the side outer plate of the high-speed wave-piercing bow (1) via an inward-leaning curved surface.

3. The high-speed wave-piercing bow vessel according to claim 1, characterized in that: The stem (2) has a rearward-inclined structure (2b), and the bottom of the rearward-inclined structure (2b) is connected to the inverted triangle area at the top of the high-speed wave-piercing bow (1) via two folding lines, which extend longitudinally and form transition surfaces with the outer plate.

4. The high-speed wave-piercing bow vessel according to claim 1, characterized in that: The stem (2) has a vertical structure (2c), and the vertical structure (2c) is arranged in the top center of the high-speed wave-piercing bow (1) in the vertical direction. The stem of the vertical structure (2c) coincides with the forward perpendicular line in the side projection and coincides with the longitudinal section line of the hull in the cross-sectional projection.

5. The high-speed wave-piercing bow vessel according to claim 1, characterized in that: The high-speed wave-piercing bow (1) has a knife-edge-shaped geometric feature in a side view protruding forward. The width of the portion below the waterline at the front end of the high-speed wave-piercing bow (1) gradually narrows to a sharp point, forming a water-cutting leading edge. The water-cutting leading edge gradually expands backward to connect with the main body of the ship. During the expansion process, a longitudinal angle transition is formed through the first bow fold line (5) and the second bow fold line (6).

6. The high-speed wave-piercing bow vessel according to claim 2, characterized in that: The outer plate of the high-speed wave-piercing bow (1) is connected to the main body of the ship in the longitudinal direction through a first fold line (5) and a second fold line (6); the first fold line (5) and the second fold line (6) are in an inverted V shape in cross section; the bottom elliptical area of ​​the cross section of the high-speed wave-piercing bow (1) is smoothly connected to the keel line; the top "inverted triangle" area of ​​the cross section of the high-speed wave-piercing bow (1) forms an X-shaped cross-curved surface structure with the outer plate of the forward-leaning structure (2a).

7. The high-speed wave-piercing bow vessel according to claim 2, characterized in that: The volume of the high-speed wave-piercing bow (1) meets the distribution requirements of the cross-sectional area curve of the entire ship, that is, And in the formula The distance x1 from the center of the volume of the curve integral to the midship must satisfy the following: x1∈[a1,a2]Lw1. When the speed is lower than the first speed threshold, then x1=a1; when the speed is greater than the second speed threshold, then x1=a2. At the same time, The ratio of the length Ld of the fore and aft endpoints of the curve integral to the effective waterline width b of the hull must satisfy the following requirement: Ld / b ≥ 10; Wherein, V is the volume of the high-speed wave-piercing bow (1), A(x) is the cross-sectional area, L wl is the effective waterline length, Ko is the volume coefficient of the wave piercing bow (1); The rate of change of A(x) along the length of the ship satisfy: Among them, k1 is the resistance constant optimized according to the ship type, and the block coefficient of the hull is And must meet C b ≤0.55, where is the total displacement volume of the hull, b is the effective waterline width of the hull, T is the design draft, and n is a positive integer.

8. The high-speed wave-piercing bow vessel according to claim 1, characterized in that: The high-speed wave-piercing bow (1) has a protruding length L p Meet L p =k2×λ, and the wavelength λ, wave speed Cw and water depth h must satisfy the following relationship: Where λ is the wavelength, Cw is the wave velocity, h is the water depth, g is the acceleration of gravity, k2 is the protrusion length proportional coefficient, and k2∈[0.01,0.03].

9. The high-speed wave-piercing bow vessel according to claim 1, characterized in that: The fatness or thinness of the cross section of the high-speed wave-piercing bow (1) is determined by the design parameters of the inflow section of the profile, and the inflow angle θ satisfies When the speed is lower than the first speed threshold, θ = b1, and when the speed is greater than the second speed threshold, θ = b2. At the same time, the cross-sectional area curve of the entire ship is The distance x2 from the first endpoint to the maximum value of the curve must satisfy: x2∈[a3,a4]Lbp. When the speed is lower than the first speed threshold, then x2=a3; when the speed is greater than the second speed threshold, then x2=a4. Where b is the effective waterline width of the hull, L j is the length of the hull inflow section, L bp It is the length of the vertical line at the beginning and end of the profile.

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