FIRST 45 Sail Configuration Guide

Overview

The FIRST 45, designed by Briand for Beneteau, is a sophisticated performance cruiser engineered for speed and offshore comfort. It is designed for owners who demand a balance between competitive club racing and fast blue-water passage making.

Rig Specifications & Performance Analysis

An analysis of the FIRST 45 dimensions reveals a modern, high-performance rig profile:

• Mainsail Configuration: A P/E ratio of 3.13 indicates a high-aspect ratio rig, providing excellent lift and aerodynamic efficiency.
• Foretriangle Design: The I/J ratio of 3.34 is optimized for high-aspect headsails, facilitating tight tacking angles and easy handling.
• Sail Area: 100m² total upwind area allows for significant power-to-weight performance.
• Performance: The sail plan is heavily racing-oriented but remains manageable for short-handed cruising with proper hardware.

Popular Sail Configurations

Fleet data suggests various versatile setups for this model:

• Mainsail: Most owners opt for full-batten configurations to maximize the 50m² profile stability.
• Headsail: Configurations typically favor 105% jibs or versatile furling genoas depending on the local wind climate.

Key Characteristics

• High-Aspect Rig: The 3.13 P/E ratio maximizes upwind efficiency and pointing ability.
• Efficient Foretriangle: An I/J of 3.34 supports modern, non-overlapping headsails for better close-hauled performance.
• Stable Platform: The 4.20m beam provides the necessary form stability to carry 100m² of sail.
• Weatherly Design: Briand's hull lines ensure the boat remains balanced and close-winded in various sea states.

Sailing Considerations

• The FIRST 45 is exceptionally responsive and requires active trim to maximize its high-aspect sail plan.
• For racing, a crew of 6-8 is ideal, while the boat can be easily cruised by a couple.
• The rig's height suggests early reefing to maintain optimal heel angles and boat speed.

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 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 3.13 P/E ratio, a tri-radial fiber layout works best to handle the high vertical loads of this tall rig. A typical inventory includes a 50m² main and a 51m² jib. With 100m² of sail area, plan to reef around 18-20 knots to preserve the membrane's integrity and vessel balance.

Conclusion

The FIRST 45 rig is a masterpiece of high-aspect efficiency and versatile performance. Explore sail options for FIRST 45 to maximize your yacht's potential.