OLSON 40 Sail Configuration Guide

Overview

The OLSON 40 is a high-performance cruiser-racer designed by Olson and built by Pacific Boats for speed and offshore agility. It targets competitive sailors who demand a weatherly hull capable of both coastal racing and fast passage making.

Rig Specifications & Performance Analysis

• Mainsail Configuration: A P/E ratio of 3.08 indicates a tall, high-aspect rig designed for efficient lift and windward performance.
• Foretriangle Design: The I/J ratio of 3.20 is optimized for versatile headsail setups, accommodating both large overlapping genoas and high-aspect jibs.
• Sail Area: 66m² total upwind area provides a high power-to-weight ratio for the 12.27m hull.
• Performance: The configuration is heavily racing-oriented but remains manageable for experienced cruising couples.

Popular Sail Configurations

• Mainsail: Typically configured with full top battens to support the 13.44m luff and maintain a clean leach profile.
• Headsail: Most owners utilize a range from 150% reaching genoas to 100% jibs for heavy-air stability.

Key Characteristics

• High-aspect mainsail (P/E 3.08) ensures exceptional aerodynamic efficiency.
• Generous foretriangle (I/J 3.20) allows for powerful headsail driving force.
• Deep 2.07m draft provides the stiffness required to carry 66m² of sail area.
• Narrow 3.47m beam creates a sleek, low-drag profile for superior close-hauled performance.

Sailing Considerations

• Active backstay and traveler adjustment are required to depower the high-aspect rig in gusts.
• Crew requirements range from 6 to 8 for competitive racing to manage the powerful headsails.
• The boat is highly responsive and accelerates quickly in light-to-moderate air.

Sailmaking Recommendations

For the OLSON 40, 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 3.08 P/E ratio, a tri-radial fiber layout within the membrane works best to handle the high vertical loads. A typical inventory includes a performance mainsail, a 135% genoa, and a Code Zero. With 66m² of sail area, plan to reef the mainsail around 18 knots to maintain a flat, fast profile.

Conclusion

The OLSON 40 is a refined performance platform that excels when paired with modern, low-stretch sail materials. Explore sail options for OLSON 40 to maximize your boat's racing and cruising potential.