Patent Application
20250115332
The present disclosure relates to a system, apparatus and method for a catamaran boat hull.
The following discussion is not to be deemed admitted prior art, but merely related art to show possible background and information related to devices or systems for securing textiles to fixed surfaces.
Catamarans, as used herein, may be but not limited to, boats with two hulls, recreational vessels for fishing and sailing, and high-performance watercraft.
Performance improvements, as used herein, may be but not limited to, increased speed, enhanced stability, improved maneuverability, and reduced drag.
Chines, as used herein, may be but not limited to, the part of the hull closest to the waterline, the area where the sides of the hull meet the bottom, and angled surfaces designed to reduce drag and improve boat performance.
Tunnels, as used herein, may be but not limited to, spaces between the hulls of a catamaran, areas that influence water flow and air pressure, and regions where hydrodynamic modifications can be implemented.
To illustrate examples of potential embodiments without limiting their scope, the following description will discuss the use of chine extensions in catamaran hulls to improve performance characteristics. Forward inner chines, mid inner chine extensions, and aft inner chine extensions are used as examples, but it should be understood that the invention can be applied to other hull modifications and different types of watercraft.
Catamarans have gained popularity in recreational and commercial marine applications due to their inherent stability, speed, and efficiency compared to traditional monohull designs. The twin-hull configuration of catamarans provides a wide platform and reduces drag, making them suitable for various activities such as fishing, sailing, and high-speed transportation. However, as with any watercraft, there is a constant drive to improve performance characteristics, including speed, maneuverability, and ride comfort.
One of the primary challenges in catamaran design is optimizing the interaction between the hulls and the water, particularly in the tunnel area between the sponsons. This interaction significantly affects the boat's performance, stability, and handling characteristics. Phenomena such as “hunting,” where the boat experiences unwanted oscillations, and “tunnel slap,” which creates noise and reduces efficiency, are common issues that designers seek to address.
Typically, a solution is to modify the hull shape or add appendages to influence water flow. For example, some designs incorporate stepped hulls or hydrofoils to reduce wetted surface area and increase lift.
Still, other solutions involve altering the chine configuration or adding strakes to the hull to improve water deflection and reduce spray. These modifications can help to increase stability and reduce drag, but they may not fully address all performance issues.
Each of these solutions fails to meet the needed solution because they often involve significant changes to the hull design, which can be costly and may introduce new challenges. Additionally, these modifications may not effectively address all performance aspects simultaneously, such as improving both speed and turning characteristics.
Therefore, a need exists for a novel system, apparatus, and method for a catamaran boat hull to improve performance characteristics.
This invention relates to a catamaran hull designed to improve performance characteristics and handling.
Numerous aspects of a unique catamaran hull for enhancing stability, speed, and maneuverability are disclosed.
It is desirable to have a catamaran hull to optimize performance characteristics, reduce phenomena such as “hunting” and “tunnel slap”, eliminate a “wet ride”, and lean into turns rather than outward. Additionally, it allows for improved stability and speed while providing better handling in various conditions.
The disclosed catamaran hull advantageously fills these needs and addresses the aforementioned deficiencies by providing a catamaran hull with a chine turn-down extension that generates lift, improves turning performance, and enhances overall boat dynamics.
A system, apparatus and method for a catamaran boat hull is illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings.
While aspects of a system, apparatus and method for a catamaran boat hull will be described with reference to the details of the embodiments of the invention shown in the drawings (and some embodiments not shown in the drawings), these details are not intended to limit the scope of the invention.
The order of the steps in the disclosed processes may be altered within the scope of the invention.
In conjunction with the accompanying drawings, the following detailed description provides a more specific and detailed explanation of various embodiments of the system, apparatus and method for a catamaran boat hull. These embodiments are provided to illustrate the invention but should not be seen as limiting its scope; the invention can be embodied in many different forms and is intended to be thorough and comprehensive to those skilled in the art.
For the purposes of promoting an understanding of the principles of a system, apparatus and method for a catamaran boat hull, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same, only as examples and not intended to be limiting.
The present disclosure provides a system, apparatus, and method for enhancing the performance characteristics of a catamaran hull. The system includes a catamaran hull with two sponsons, each having an inner chine. Attached to the inner chine of each sponson are chine extensions that extend into the tunnel between the two sponsons. These chine extensions are angled downward from a horizontal plane, a feature that may contribute to improved performance characteristics of the catamaran. In some aspects, the chine extensions may include a forward inner chine, a mid inner chine extension, and an aft inner chine extension. The angle, width, and thickness of these chine extensions may vary, allowing for customization based on specific design and performance requirements of the catamaran. The chine extensions may be made of various materials, including but not limited to stainless steel, carbon fiber, and plastic. In some cases, an extended chine horizontal skeg may be attached to the chine extensions, further enhancing the catamaran's performance during turns. The disclosed system, apparatus, and method may be applied to both motorized and sailing catamarans, offering potential benefits such as improved stability, reduced drag, and enhanced maneuverability.
Referring to
In some cases, the chine extensions, including the forward inner chine 001, mid inner chine extension 002, and aft inner chine extension 003, may be attached to the sponson by various fastening means. These fastening means may include, but are not limited to, screws or adhesives. The choice of fastening means may depend on factors such as the material of the chine extensions and the sponson, the desired strength of the attachment, and the specific design and performance requirements of the catamaran.
In some aspects, the chine extensions, including the forward inner chine 001, mid inner chine extension 002, and aft inner chine extension 003, may have a width ranging from 12.7 mm to 152.4 mm (0.5 inches to 6 inches). This range of widths allows for customization of the chine extensions to suit the specific design and performance requirements of the catamaran. For example, a wider chine extension may provide more surface area for generating lift, potentially improving the boat's speed and maneuverability.
In some cases, the chine extensions, including the forward inner chine 001, mid inner chine extension 002, and aft inner chine extension 003, may have a thickness ranging from 3.175 mm to 12.7 mm (⅛ inch to ½ inch). This range of thicknesses allows for customization of the chine extensions to suit the specific design and performance requirements of the catamaran. For example, a thicker chine extension may provide greater structural strength and durability, while a thinner chine extension may reduce weight and drag.
In some aspects, the chine extensions, including the forward inner chine 001, mid inner chine extension 002, and aft inner chine extension 003, may vary in width along the longitudinal line of the sponson. This variability in width allows for further customization of the chine extensions to suit the specific design and performance requirements of the catamaran. For example, a wider chine extension at the bow may improve water penetration and reduce drag at the front of the boat, while a narrower chine extension at the stern may reduce drag at the rear of the boat.
The present disclosure provides a system, apparatus, and method for enhancing the performance characteristics of a catamaran hull. The system includes a catamaran hull with two sponsons, each having an inner chine. Attached to the inner chine of each sponson are chine extensions that extend into the tunnel between the two sponsons. These chine extensions are angled downward from a horizontal plane, a feature that may contribute to improved performance characteristics of the catamaran. In some aspects, the chine extensions may include a forward inner chine, a mid inner chine extension, and an aft inner chine extension. The angle, width, and thickness of these chine extensions may vary, allowing for customization based on specific design and performance requirements of the catamaran. The chine extensions may be made of various materials, including but not limited to stainless steel, carbon fiber, and plastic. In some cases, an extended chine horizontal skeg may be attached to the chine extensions, further enhancing the catamaran's performance during turns. The disclosed system, apparatus, and method may be applied to both motorized and sailing catamarans, offering potential benefits such as improved stability, reduced drag, and enhanced maneuverability.
Referring to
In some cases, the chine extensions, including the forward inner chine 001, mid inner chine extension 002, and aft inner chine extension 003, may be attached to the sponson by various fastening means. These fastening means may include, but are not limited to, screws or adhesives. The choice of fastening means may depend on factors such as the material of the chine extensions and the sponson, the desired strength of the attachment, and the specific design and performance requirements of the catamaran.
In some aspects, the chine extensions, including the forward inner chine 001, mid inner chine extension 002, and aft inner chine extension 003, may have a width ranging from 12.7 mm to 152.4 mm (0.5 inches to 6 inches).
This range of widths allows for customization of the chine extensions to suit the specific design and performance requirements of the catamaran. For example, a wider chine extension may provide more surface area for generating lift, potentially improving the boat's speed and maneuverability.
In some cases, the chine extensions, including the forward inner chine 001, mid inner chine extension 002, and aft inner chine extension 003, may have a thickness ranging from 3.175 mm to 12.7 mm (⅛ inch to ½ inch).
This range of thicknesses allows for customization of the chine extensions to suit the specific design and performance requirements of the catamaran. For example, a thicker chine extension may provide greater structural strength and durability, while a thinner chine extension may reduce weight and drag.
In some aspects, the chine extensions, including the forward inner chine 001, mid inner chine extension 002, and aft inner chine extension 003, may vary in width along the longitudinal line of the sponson. This variability in width allows for further customization of the chine extensions to suit the specific design and performance requirements of the catamaran. For example, a wider chine extension at the bow may improve water penetration and reduce drag at the front of the boat, while a narrower chine extension at the stern may reduce drag at the rear of the boat.
Referring to
Extending from the forward inner chine 001 is the mid inner chine extension 002. This extension appears as an angled plane that protrudes into what would be the tunnel area between the catamaran's twin hulls. The mid inner chine extension 002 is shown angling downward from the main hull structure, creating a modified profile for the inner chine. This extension is designed to alter the hydrodynamics of the hull, potentially affecting factors such as lift, stability, and turning characteristics. In some aspects, the mid inner chine extension 002 may continue the line of the chine, providing additional surface area along the sponson's inner edge. In other cases, the mid inner chine extension 002 may have a different configuration or orientation, depending on the specific design and performance requirements of the catamaran.
In some embodiments, the angle of the mid inner chine extension 002 can vary from −X to −Z degrees from the horizontal plane. This variability in the angle of the mid inner chine extension 002 allows for customization of the catamaran's performance characteristics. For example, a larger negative angle may increase the lift generated by the chine extension, potentially improving the boat's speed and maneuverability. Conversely, a smaller negative angle or a zero angle may reduce the lift generated by the chine extension, potentially improving the boat's stability and handling in rough water conditions.
The hull's profile in this view reveals a stepped design, with the mid inner chine extension 002 forming part of a lower step. Above this, the hull rises in a series of levels, creating a complex shape that influences water flow and boat performance. The upper portion of the hull shows the deck area, with a slight curvature visible at the top of the image. This curvature may contribute to the overall hydrodynamic properties of the catamaran design.
The structure depicted in
Referring to
The forward inner chine 001 is visible as a longitudinal edge where the hull's side meets its bottom. This chine extends along the length of the hull, forming a crucial part of the boat's hydrodynamic profile. In some aspects, the forward inner chine 001 may be positioned near the bow of the boat, extending along the inner edge of each sponson. In other cases, the forward inner chine 001 may be located at different positions along the hull, depending on the specific design and performance requirements of the catamaran.
Adjacent to the forward inner chine 001 is the mid inner chine extension 002. This extension appears as an angled plane that extends from the inner chine into the tunnel area between the catamaran's hulls. The mid inner chine extension 002 is designed to modify the water flow characteristics in the tunnel, potentially improving the boat's performance. In some aspects, the mid inner chine extension 002 may continue the line of the chine, providing additional surface area along the sponson's inner edge. In other cases, the mid inner chine extension 002 may have a different configuration or orientation, depending on the specific design and performance requirements of the catamaran.
The hull's structure is depicted with various angular surfaces and stepped sections, which are typical features in high-performance boat designs. These elements work together to manage water flow, reduce drag, and enhance stability during operation. In some aspects, the hull may include additional features or modifications to further improve the boat's performance and handling characteristics.
The perspective view allows for visualization of how the forward inner chine 001 and mid inner chine extension 002 integrate with the overall hull design. The extension's angle and position relative to the main hull structure can be observed, illustrating its potential impact on the catamaran's hydrodynamic properties. In some aspects, the chine extensions may be designed to protrude into the tunnel area between the two hulls of the catamaran, potentially altering the hydrodynamics of the boat as it moves through water. In other cases, the chine extensions may have a different configuration or orientation, depending on the specific design and performance requirements of the catamaran.
In some aspects, the disclosed system, apparatus, and method for a catamaran hull may be applied to sailing catamarans, in addition to motorized catamarans. The chine extension system may be configured to suit the specific needs and characteristics of a sailing catamaran, providing similar benefits of improved performance and handling.
In some cases, the chine extension system may include an extended chine horizontal skeg. This additional feature may be designed to take advantage of boat sliding during turns. As the boat turns, the extended chine horizontal skeg may allow the outboard hull to rise and the inboard hull to dig into the water. This action may enable the boat to lean farther into the turn, enhancing the boat's maneuverability and stability during turns.
The extended chine horizontal skeg may be integrated with the chine extension system in various ways. In some aspects, the extended chine horizontal skeg may be attached to the chine extension, forming a continuous structure that extends from the chine into the tunnel of the catamaran. In other aspects, the extended chine horizontal skeg may be a separate component that is attached to the chine extension at a specific location, such as at the forward inner chine 001, mid inner chine extension 002, or aft inner chine extension 003.
The design and configuration of the extended chine horizontal skeg may vary depending on the specific requirements of the catamaran. For example, the length, width, and angle of the extended chine horizontal skeg may be adjusted to optimize the boat's performance during turns. The material of the extended chine horizontal skeg may be selected based on factors such as durability, weight, and resistance to corrosion.
In some cases, the chine extension system, including the extended chine horizontal skeg, may be retrofitted to existing catamarans. This may provide a cost-effective solution for catamaran owners seeking to improve the performance and handling of their boats.
In some aspects, a method of using the chine extension system may involve the following steps:
In some aspects, the chine extension system may be incorporated into the original manufacturing process of a catamaran. This integration may allow for seamless incorporation of the chine extensions into the hull design, potentially enhancing overall performance and efficiency.
During the manufacturing process, the forward inner chine 001, mid inner chine extension 002, and aft inner chine extension 003 may be molded directly into the hull structure. This approach may provide a more streamlined appearance and potentially stronger integration compared to retrofitting. The mold for the catamaran hull may be designed to include the chine extensions, ensuring precise angles and dimensions.
In some cases, the chine extensions may be manufactured separately and then bonded to the hull during the construction process. This method may allow for greater flexibility in materials and design, as the extensions could be made from a different material than the hull itself. The bonding process may involve high-strength marine-grade adhesives or a combination of adhesives and mechanical fasteners to ensure a secure attachment.
The angle of the mid inner chine extension 002 may be set during the manufacturing process based on the intended use of the catamaran. For racing catamarans, a more aggressive angle may be chosen, while leisure craft may have a more moderate angle. In some aspects, the manufacturing process may allow for adjustable chine extensions, providing the ability to fine-tune the boat's performance after production.
For catamarans already in use, the chine extension system may be retrofitted to improve performance characteristics. The retrofitting process may involve several steps to ensure proper installation and optimal performance.
Initially, a thorough assessment of the existing hull structure may be conducted to determine the best attachment points for the chine extensions. This assessment may include measurements and potentially 3D scanning of the hull to ensure precise fitment of the new components.
The forward inner chine 001, mid inner chine extension 002, and aft inner chine extension 003 may be custom-fabricated to match the specific dimensions and contours of the existing catamaran hull. These components may be made from materials compatible with the hull, such as fiberglass, carbon fiber, or marine-grade metals.
In some cases, the existing hull surface may need to be prepared for the attachment of the chine extensions. This preparation may involve cleaning, sanding, and potentially applying a primer to ensure strong adhesion. The chine extensions may then be attached using a combination of marine-grade adhesives and mechanical fasteners, such as bolts or rivets.
The retrofitting process may also include reinforcing the attachment points to distribute the loads generated by the chine extensions across a larger area of the hull. This reinforcement may involve adding additional layers of fiberglass or other structural materials to the interior of the hull at the attachment points.
After installation, the retrofitted catamaran may undergo a series of tests to ensure the chine extensions are securely attached and performing as intended. These tests may include both on-land inspections and on-water performance evaluations. In some aspects, fine-tuning of the chine extension angles may be performed based on the results of these tests to optimize the catamaran's performance for its specific use case.
In some cases, the method of using the chine extension system may also involve educating operators about the changes in boat handling and performance that result from the modifications. This may include providing guidance on how to maximize the benefits of the chine extensions during various maneuvers and in different operating conditions.
The disclosed system, apparatus, and method for a catamaran hull, including the chine extension system and the optional extended chine horizontal skeg, provide a versatile and effective solution for improving the performance and handling of catamarans, whether they are motorized or sailing catamarans.
Those skilled in the art to which this application relates will appreciate that other and further additions, deletions, substitutions and modifications may be made to the described embodiments.
The specification is not to be taken in a limiting sense but is made merely for the purpose of describing the general principles of exemplary embodiments; many additional embodiments of this invention are possible. It is understood that no limitation of the scope of the invention is thereby intended. The scope of the disclosure should be determined with reference to the Claims. Reference throughout this specification to “one embodiment,” “an embodiment,” or similar language means that a particular feature, structure, or characteristic that is described in connection with the embodiment is included in at least one embodiment of the present disclosure. Thus, appearances of the phrases “in one embodiment,” “in an embodiment,” and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment.
The invention is described with such embodiments, but the invention is not limited to any embodiment. The scope of the invention is limited only by the claims and the invention encompasses numerous alternatives, modifications and equivalents. Several specific details are set forth in the description to provide a thorough understanding of the invention.
These details are provided for the purpose of example and the invention may be practiced according to the claims without some or all of these specific details. In general, the order of the steps of disclosed processes may be altered within the scope of the invention.
Unless otherwise indicated, the drawings are intended to be read (e.g., arrangement of parts, proportion, degree, etc.) together with the specifications, and are to be considered a portion of the entire written description of this invention. As used in the preceding description, the terms “horizontal”, “vertical”, “left”, “right”, “up” and “down”, as well as adjectival and adverbial derivatives thereof (e.g., “horizontally”, “rightwardly”, “upwardly”, etc.), simply refer to the orientation of the illustrated structure as the particular drawing figure faces the reader. Similarly, the terms “inwardly”, and “outwardly” generally refer to the orientation of a surface relative to its axis of elongation, or axis of rotation, as appropriate. Also, as used herein, terms such as “positioned on” or “supported on” mean positioned or supported on but not necessarily in direct contact with the surface.
This application claims priority to U.S. Application No. 63/542,426, titled SYSTEM, APPARATUS AND METHOD FOR A CATAMARAN BOAT HULL, filed on 4 Oct. 2023, which is incorporated herein by reference in its entirety, including any addendums, appendixes, and attachments thereto, to the extent these applications do not conflict with the present disclosure herein.
| Number | Date | Country | |
|---|---|---|---|
| 63542426 | Oct 2023 | US |
