1-TON Sail Configuration Guide

Overview

The Farr-designed 1-TON, built by Franklin, is a high-performance racing yacht rooted in the competitive IOR era. Its design philosophy emphasizes upwind efficiency and tactical agility for both offshore and inshore fleet racing.

Rig Specifications & Performance Analysis

• Mainsail Configuration: A P/E ratio of 2.69 indicates a high-aspect rig designed for superior lift-to-drag ratios.
• Foretriangle Design: The I/J ratio of 3.43 is optimized for large overlapping genoas, characteristic of its design pedigree.
• Sail Area: 73m² total upwind area provides a powerful power-to-weight ratio.
• Performance: This is a stiff, racing-oriented platform that excels in upwind pointing and light-air acceleration.

Popular Sail Configurations

• Mainsail: Generally configured with slab reefing and high-modulus materials to maintain shape under high leech loads.
• Headsail: Inventories typically range from 150% overlapping genoas to high-aspect #3 jibs for heavier conditions.

Key Characteristics

• High-aspect mainsail (P/E 2.69) for exceptional lift and pointing ability.
• Large foretriangle (I/J 3.43) allowing for massive power generation from headsails.
• Deep 2.27m draft provides the necessary righting moment for the 73m² sail plan.
• 12.08m LOA ensures a stable and fast displacement hull for competitive racing.

Sailing Considerations

• Large overlapping headsails require a coordinated crew for efficient tacking and sail handling.
• Expect a very weatherly boat that rewards precise traveler and backstay adjustments.
• Performance expectations are highest in moderate breezes where the high-aspect rig shines.

Sailmaking Recommendations

For the 1-TON, 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 in light air. For cruising or offshore sailing, add a taffeta protective layer on both sides to enhance UV resistance and abrasion protection. Based on the 2.69 P/E ratio, a radial fiber layout works best to handle the vertical loads of the high-aspect main. A typical inventory includes a mainsail, an all-purpose genoa, and a symmetric spinnaker. With 73m² of sail area, plan to reef the mainsail at approximately 20 knots to maintain optimal heel angles.

Conclusion

The 1-TON remains a formidable performer when equipped with modern, low-stretch sail technology. Explore sail options for 1-TON to maximize your yacht's competitive edge.