FINNFLYER 36 Sail Configuration Guide

Overview

The FINNFLYER 36 is a high-performance cruiser-racer designed by Kamu Strålhmann and built by Finn Flyer Marina. It is engineered for sailors who demand Finnish build quality paired with agile, competitive handling in both club racing and fast coastal cruising.

Rig Specifications & Performance Analysis

Analysis of the P/E/I/J dimensions reveals a modern, efficient sail plan:

• Mainsail Configuration: A P/E ratio of 2.91 indicates a high-aspect rig, providing efficient lift and reducing drag for superior upwind performance.
• Foretriangle Design: The I/J ratio of 3.59 is optimized for high-aspect headsails, favoring modern non-overlapping or slightly overlapping jibs over massive genoas.
• Sail Area: With a total upwind area of 69m², the boat possesses a strong power-to-displacement potential.
• Performance: The configuration suggests a weatherly, close-winded vessel that excels in light-to-moderate conditions.

Popular Sail Configurations

Typical setups across the five-boat fleet focus on versatility and ease of handling:

• Mainsail: Usually configured with full battens for shape stability or traditional slab reefing for racing weight savings.
• Headsail: Most owners utilize a 105-110% jib to maximize the efficiency of the tall foretriangle height.

Key Characteristics

• High-Aspect Main: The 2.91 P/E ratio ensures a powerful, efficient airfoil shape for pointing high.
• Optimized Foretriangle: A 3.59 I/J ratio allows for quick tacking and excellent visibility forward.
• Balanced Hull: 10.99m LOA and 3.39m beam provide a stable platform that remains stiff in a breeze.
• Performance Handling: Designed to be responsive and rewarding for active trimmers.

Sailing Considerations

• The FINNFLYER 36 is highly effective in light air but remains stiff and manageable as the breeze builds.
• For racing, a crew of 4-6 is ideal, though the high-aspect jib makes it manageable for short-handed cruising.
• Performance expectations include exceptional acceleration and a high degree of responsiveness to helm inputs.

Sailmaking Recommendations

For the FINNFLYER 36, we recommend SurgeX membrane sails as the optimal choice for most sailors. SurgeX uses continuous fiber construction where fibers are laid along load paths and embedded in a thin membrane, providing superior shape retention compared to traditional Dacron while being more affordable than premium laminates. The continuous fiber structure means less stretch over time, maintaining the designed sail shape for years.

For racing applications, specify a lightweight SurgeX configuration with minimal base weight to maximize performance. For cruising or bluewater sailing, add a taffeta protective layer on both sides to enhance UV resistance and abrasion protection. Based on the 2.91 P/E ratio, a tri-radial fiber layout works best to handle the vertical loads of the high-aspect mainsail. A typical inventory includes a high-roach mainsail, an all-purpose jib, and a code-zero for reaching. With 69m² of sail area, plan to reef around 16-18 knots to maintain a flat, efficient profile.

Conclusion

The FINNFLYER 36 is a refined sailing machine that rewards precision tuning and high-quality sail materials. Explore SurgeX membrane sail options to unlock the full potential of this Kamu Strålhmann design.