FIRST 235 Sail Configuration Guide

Overview

Designed by Berret for Beneteau, the FIRST 235 is a high-performance pocket cruiser-racer. It balances a voluminous hull for weekend cruising with a spirited rig designed for competitive club racing.

Rig Specifications & Performance Analysis

• Mainsail Configuration: A P/E ratio of 2.61 indicates a moderate to tall aspect rig, optimized for efficient lift and light-wind agility.
• Foretriangle Design: The I/J ratio of 3.49 supports a powerful foretriangle, typically favoring large overlapping genoas to maximize power.
• Sail Area: 23m² total upwind area provides a high power-to-weight ratio for a 6.57m vessel.
• Performance: The design is notably weatherly and stiff, capable of holding its own in both light-air drifting matches and breezy coastal passages.

Popular Sail Configurations

• Mainsail: Standard configurations typically feature partial or full battens to maintain leech profile and durability.
• Headsail: Most owners utilize a range of headsails from 110% working jibs to 150% genoas to suit local conditions.

Key Characteristics

• Tall aspect mainsail for superior lift and aerodynamic efficiency.
• Large foretriangle base allowing for versatile headsail inventories.
• Significant form stability derived from the 2.49m beam.
• Responsive, performance-oriented handling typical of Berret designs.

Sailing Considerations

• The boat performs best when kept flat; early reefing helps maintain speed and reduces weather helm.
• Easily managed by a small crew or single-handed with appropriate control line routing.
• High maneuverability makes it an excellent platform for tight-course racing.

Sailmaking Recommendations

For the FIRST 235, 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 club racing, add a taffeta protective layer on both sides to enhance UV resistance and abrasion protection. Based on the 2.61 P/E ratio, a tri-radial fiber layout within the membrane works best to distribute loads from the head and clew. A typical inventory includes a high-roach mainsail, a 135% genoa, and an all-purpose asymmetric spinnaker. With 23m² of sail area, plan to reef around 16-18 knots to keep the boat on its lines.

Conclusion

The FIRST 235 remains a benchmark for small yacht performance, offering a sophisticated rig that rewards precise sail trim. Explore sail options for the FIRST 235 to unlock its full potential.