FIRST 35 Sail Configuration Guide

Overview

The FIRST 35, designed by Jean Berret and built by Beneteau, is a quintessential racer-cruiser that balances competitive hull performance with functional interior volume. It is designed for sailors who prioritize agility on the racecourse without sacrificing the amenities required for coastal cruising.

Rig Specifications & Performance Analysis

Analysis of the FIRST 35 rig dimensions reveals a balanced and versatile sail plan:

• Mainsail Configuration: A P/E ratio of 3.00 indicates a tall, moderate-aspect rig designed for efficient lift and upwind drive.
• Foretriangle Design: The I/J ratio of 3.37 provides a generous foretriangle, ideally suited for powerful overlapping genoas or high-aspect working jibs.
• Sail Area: With 53m² of total upwind sail area, the boat offers a competitive power-to-weight ratio.
• Performance: The rig is oriented toward weatherly performance, excelling in close-winded applications and light-to-moderate air.

Popular Sail Configurations

• Mainsail: Common setups include full-battened mainsails for shape stability in cruising or high-roach designs for racing.
• Headsail: Inventories typically feature a 135-140% genoa for light air and a 100% jib for heavy-weather stability.

Key Characteristics

• Tall aspect rig (P/E 3.00) optimizes lift-to-drag ratios for superior upwind pointing.
• High I/J ratio (3.37) allows for a diverse headsail inventory tailored to local wind conditions.
• The 3.70m beam provides significant initial stability, allowing the boat to carry sail effectively.
• Balanced 53m² sail plan ensures the boat remains responsive and easy to trim.

Sailing Considerations

• The FIRST 35 is stiff and predictable, typically requiring the first reef in the mainsail at approximately 18-20 knots of true wind.
• Short-handed crews can manage the rig easily, though a crew of 5-6 is optimal for competitive racing.
• Performance expectations include excellent acceleration and a high degree of responsiveness in tactical situations.

Sailmaking Recommendations

For the FIRST 35, we recommend SurgeX membrane sails as the optimal choice for most sailors. SurgeX uses continuous fiber construction where fibers are laid precisely along load paths and embedded in a thin membrane, providing superior shape retention compared to traditional Dacron while remaining more cost-effective than premium carbon laminates. The continuous fiber structure ensures minimal stretch over time, maintaining the designed aerodynamic profile for years of service.

For racing applications, specify a lightweight SurgeX configuration with a film/film finish to minimize aloft weight and maximize speed. For cruising or bluewater sailing, we recommend adding a taffeta protective layer on both sides to enhance UV resistance and protect against mechanical abrasion. Based on the 3.00 P/E ratio, a tri-radial fiber layout works best to handle the vertical loads of the tall rig. A typical inventory includes a high-modulus mainsail and a multi-purpose furling genoa. With 53m² of sail area, plan to reef as the boat approaches 20 knots to maintain an upright, efficient plane.

Conclusion

The FIRST 35 is a robust and weatherly yacht that rewards precise sail trim and high-quality materials. Explore sail options for FIRST 35 to maximize your performance and longevity on the water.