SCHOCK 35 Sail Configuration Guide

Overview

The SCHOCK 35 is a high-performance racer-cruiser designed for competitive offshore racing and fast coastal passages. Its design philosophy emphasizes a balanced hull form and a powerful rig, catering to sailors who prioritize speed and agility.

Rig Specifications & Performance Analysis

• Mainsail Configuration: A P/E ratio of 3.19 indicates a high-aspect ratio rig, optimized for aerodynamic efficiency and superior lift while sailing upwind.
• Foretriangle Design: The I/J ratio of 3.57 is specifically suited for large overlapping genoas, providing significant drive in light to moderate conditions.
• Sail Area: Total upwind sail area is approximately 60m², offering a high power-to-displacement ratio.
• Performance: The configuration is heavily racing-oriented, rewarding precise trim and active rig tuning.

Popular Sail Configurations

• Mainsail: Most owners utilize high-modulus materials to support the high vertical loads of the tall P-dimension.
• Headsail: Typical setups include a range of genoas (135% to 155%) for light air and dedicated blade jibs for heavy-weather performance.

Key Characteristics

• High-Aspect Rig: The 3.19 P/E ratio delivers exceptional pointing ability and reduced drag.
• Powerful Foretriangle: The 3.57 I/J ratio supports a versatile headsail inventory for various wind ranges.
• Deep Draft Stability: The 2.10m draft provides the necessary righting moment to carry 60m² of sail efficiently.
• Weatherly Performance: The SCHOCK 35 is known for being close-winded and responsive in a breeze.

Sailing Considerations

Recommended wind ranges require early depowering; the high-aspect mainsail responds well to backstay tension and traveler adjustments. Racing typically requires a crew of 6-8 to manage large headsail changes and spinnaker sets. Performance expectations include high speeds on all points of sail, particularly in medium air.

Sailmaking Recommendations

For the SCHOCK 35, 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 3.19 P/E ratio, a fiber-mapped layout works best to handle the high leach tensions of the mainsail. A typical inventory includes a SurgeX Mainsail, a 140% reaching genoa, and a heavy-weather jib. With 60m² of sail area, plan to reef around 18 knots to maintain optimal heel angles and boat speed.

Conclusion

The SCHOCK 35 remains a standout performer due to its high-aspect rig and sophisticated hull dimensions. Explore sail options for SCHOCK 35 to unlock its full racing and cruising potential.