Split V Bow Catamaran Hulls for Splash Reduction
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Solution Overview
Problem
Catamaran-style watercraft typically experience a wet ride due to water splashing from the V-bow or flat hull designs, limiting passenger comfort and freedom of movement, as they are designed to cut through water rather than slide or plane sideways.
Innovation Solution
A flat catamaran watercraft with a 'split V' bow configuration where the bottom surface of each hull slopes upward from the inboard to the outboard side, reducing water splash and allowing the rear portion to slide sideways during turns, combined with a unibody construction for enhanced stability and manufacturing ease.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a V-shaped bow or flat hull design is used on catamaran watercraft, then the watercraft can cut through water effectively, but water splashes onto passengers creating a wet ride
Solution Approach 1:
The bow is segmented into two separate V-shaped sections, one for each hull, with the inner surfaces angled to direct water outward. This segmentation allows each hull to independently manage water flow, directing splashes away from the center and passengers rather than allowing water to rise between the hulls.
Solution Approach 2:
The inner surfaces of the V-shaped bow sections have specific angular orientations designed to redirect water flow locally. By adjusting the angle of these inner surfaces, water is directed outward along the hulls rather than upward toward passengers, creating a dry ride zone while maintaining cutting effectiveness.
2Ease of operation
If hulls are configured to cut through water with banking control, then control during turns is improved, but the watercraft cannot slide or plane sideways freely
Solution Approach 1:
The hull design incorporates dynamic characteristics that allow transition between cutting through water and sliding sideways. The V-shaped bow configuration with specific angle ranges enables the hulls to adapt their interaction with water during turns, allowing controlled sliding when needed while maintaining cutting capability when required.
Solution Approach 2:
By optimizing the angle parameters of the V-shaped bow sections and hull configurations, the watercraft can change its hydrodynamic characteristics. The specific angle ranges allow the hulls to shift between cutting mode and sliding mode, providing both control and freedom of movement depending on operational conditions.
3Volume of moving object
If compact catamaran design is used, then portability and ease of trailering are improved, but water management and passenger comfort deteriorate
Solution Approach 1:
The V-shaped bow design creates asymmetric water flow patterns on each hull, with the inner surfaces angled to direct water outward. This asymmetric configuration is particularly effective in compact designs where space is limited, as it redirects water away from the center platform and passengers without requiring additional volume or complex structures.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design significantly reduces water splash on passengers and enhances the watercraft's freedom of movement, providing a more enjoyable and comfortable boating experience while maintaining safety and structural integrity.
Implementation Method 1
the bottom surface of each of the two asymmetrical catamaran hulls at the forward portions of each hull slopes upward from the inboard side of the hull to the outboard side of the hull. Such upward slope of the bottom of each hull sheds water and waves to the outboard sides of the vessel as it travels through the water
Implementation Method 2
the rear portions of each such hull define an angled slope along both inboard and outboard sides of the hull (between a bottom, nearly horizontal surface of each hull and the side, nearly vertical surfaces of each hull), which angled slopes allow the rear portion of the watercraft to slide and drift sideways along the surface of the water as the watercraft turns
Data Source
AI summary
A flat catamaran watercraft construction is provided having a bow that defines a “split V” configuration in which the bottom surface of each of the two asymmetrical catamaran hull portions at the forward section of each hull portion slope upward from the inboard side of the hull portion to the outboard side of the hull portion. Such upward slope of the bottom of each hull portion sheds water and waves to the outboard sides of the vessel as it travels through the water in order to minimize the amount of water and spray that is directed upward between the individual hull portions towards the passengers. The rear portions of each such hull portion define an angled slope along both inboard and outboard sides, which angled slopes allow the rear portion of the watercraft to slide and drift sideways along the surface of the water as the watercraft turns. The flat catamaran hull portions and deck of the watercraft are preferably of unibody construction, such that they are formed (e.g., molded or otherwise machined) in a single, one-piece assembly.