Views: 0 Author: Site Editor Publish Time: 2025-06-16 Origin: Site
Catamaran hulls rely on their twin-hull configuration for exceptional water stability. These hulls demand lightweight yet robust materials like fiberglass or aluminum to withstand marine conditions. The tunnel connecting these hulls is critical - proper design enhances sailing speed while ensuring structural integrity.
V-Groove Scrim Board PVC Foam is an ideal material for catamaran tunnels due to its lightweight, high strength, and ability to conform to complex concave/convex shapes. As a leading PVC Foam Board Manufacturer, UNION COMPOSITES provides custom-engineered solutions for marine applications.
Catamaran Tunnel Diagram
✅ Lightweight & Strong – Reduces overall vessel weight while maintaining structural integrity.
✅ Waterproof & Corrosion-Resistant – Withstands marine environments, unlike traditional wood.
✅ Resin Efficiency – Optimized groove design minimizes resin usage, cutting material costs.
✅ Customizable – CNC-machined to exact specifications for seamless integration.
To ensure a precise fit, our engineers use mathematical modeling based on Vertical Diameter Theorem and customer-provided dimensions:
Technical Diagrams
· CE = 493mm, AB = 826mm, Major Arc (ACB) = 1700mm
· Formula: AO(r)2 = AE2 + OE2 = 4132 + (493 - r)2
· Result: Radius (r) = 419mm
· Groove Angle Calculation:
o n = 216° (using r = L * 180 / n * π)
o With a 5cm groove spacing, we determined 33 grooves are needed.
o Final V-Groove Angle = 6°
Solution: We used 6° CNC blades to produce the perfect V-groove profile.
6° CNC blades achieve perfect tunnel curvature alignment
Many customers use standard scrim boards on convex surfaces (Pic 1), leading to excessive resin consumption.
(Pic 1)
At UNION, we recommend an improved method (Pic 2) where:
· One side of the grid adheres closely to the hull.
· The V-groove adjusts dynamically, reducing resin flow.
(Pic 2)
Result:
✅ 40% less resin used (confirmed by customer feedback).
✅ Stronger bond & weight savings.
Watch Our V-Groove Manufacturing Process
✔ Custom CNC Machining – Precision-cut for exact marine requirements.
✔ DNV GL-Certified – Meets strict marine industry standards.
✔ Resin-Saving Design – Lowers material costs without compromising strength.
✔ Wide Range of Densities (P45-P250) – Suitable for different structural needs.
Technical Benefits for Marine Applications
✓ 200kg+ vessel weight reduction
✓ Improved fuel efficiency
✓ Enhanced structural fatigue resistance
✓ Streamlined vacuum infusion process
· Wind Energy – Lightweight cores for turbine blades.
· Marine & Shipbuilding – Hulls, decks, bulkheads.
· Aerospace & Automotive – High-strength, fire-resistant panels.
15+ Years of Expertise – Trusted by global marine & aerospace industries.
Fast Turnaround (12-Day Delivery) – Prototype to bulk production.
Free Samples & Custom Solutions – No MOQ restrictions.
"After implementing UNION's V-groove design, we reduced resin usage by 40% while improving hull rigidity. The mathematical precision ensured perfect tunnel curvature alignment." - Marine Engineering Client
· 2mm–70mm (standard), with ±0.2mm tolerance. Custom options available.
· Plain, punched, grooved, scrim, hyperbolic, and custom finishes.
· Up to 40% reduction compared to traditional methods.
· Yes! PVC Foam is lighter, waterproof, and more durable.
For high-performance catamaran tunnels, UNION COMPOSITES’ V-Groove Scrim Board PVC Foam offers unmatched strength, weight savings, and resin efficiency.
Contact us for a custom solution tailored to your marine project!
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