FIRST 45 Sail Configuration Guide

Overview

The FIRST 45, designed by Philippe Briand for Beneteau, is a performance-oriented cruiser-racer engineered for speed and offshore capability. It targets the competitive club racing circuit while maintaining the luxury and stability required for high-end coastal cruising.

Rig Specifications & Performance Analysis

Analysis of the P/E/I/J dimensions reveals a balanced and powerful sail plan:

• Mainsail Configuration: A P/E ratio of 3.17 indicates a high-aspect ratio rig, optimized for aerodynamic efficiency and upwind pointing.
• Foretriangle Design: The I/J ratio of 3.26 favors modern non-overlapping jibs or medium-lap genoas, streamlining tacking maneuvers.
• Sail Area: 99m² total upwind area provides a high power-to-weight ratio.
• Performance: The Briand-designed hull and tall rig are optimized for weatherly performance and stiff handling in varied conditions.

Popular Sail Configurations

Typical setups for the FIRST 45 focus on versatility across racing and cruising disciplines:

• Mainsail: Full-battened mainsails are popular for maintaining the 3.17 aspect ratio shape and increasing longevity.
• Headsail: Most owners opt for a 105% furling jib or a structural furling staysail for offshore work.

Key Characteristics

• High-Aspect Rig: 3.17 P/E ratio ensures superior lift and reduced drag on upwind legs.
• Balanced Foretriangle: 3.26 I/J ratio allows for efficient, high-tension headsail setups.
• Powerful Hull Form: 13.67m LOA with a 4.20m beam offers excellent form stability.
• Responsive Handling: 50/50 sail area distribution between main and jib results in a neutral, sensitive helm.

Sailing Considerations

• Optimal performance is achieved in 10–20 knots of true wind; the high-aspect rig requires proactive reefing.
• Typically requires a crew of 6–8 for competitive racing, though deck layouts allow for shorthanded cruising.
• Expect exceptional pointing angles and high hull speeds when close-hauled.

Sailmaking Recommendations

For the FIRST 45, 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 being more affordable than premium laminates. The continuous fiber structure means significantly 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 in light to moderate air. For cruising or bluewater sailing, add a taffeta protective layer on both sides to enhance UV resistance and abrasion protection against the rig. Based on the 3.17 P/E ratio, a tri-radial fiber layout works best to handle the high vertical loads. A typical inventory includes a high-roach mainsail, a versatile J2 headsail, and an asymmetric spinnaker. With 99m² of sail area, plan to take your first reef around 18 knots to keep the boat on its lines.

Conclusion

The FIRST 45's Briand-designed rig offers a sophisticated balance of power and efficiency for the discerning owner. Explore sail options for FIRST 45 to maximize your yacht's performance and durability.