C&C 115 Sail Configuration Guide

Overview

The C&C 115 is a contemporary performance cruiser-racer designed by Tim Jackett, blending C&C's racing heritage with Tartan's build quality. This model targets the competitive club racing circuit and owners seeking a fast, weatherly coastal cruiser.

Rig Specifications & Performance Analysis

Analysis of the P/E/I/J dimensions reveals a modern, efficient sail plan:

• Mainsail Configuration: A P/E ratio of 3.02 indicates a high-aspect rig, optimized for aerodynamic lift and upwind efficiency.
• Foretriangle Design: The I/J ratio of 3.60 favors tall, non-overlapping headsails, allowing for easier tacking and better visibility.
• Sail Area: 73m² total upwind area provides a robust power-to-displacement ratio for the 11.50m hull.
• Performance: The configuration is heavily oriented toward upwind performance and agility in light-to-moderate air.

Popular Sail Configurations

• Mainsail: Owners typically opt for full-battened configurations to maintain the high-aspect shape in varying wind strengths.
• Headsail: The most common setup features 100-105% high-aspect jibs, often paired with an asymmetric spinnaker for off-wind legs.

Key Characteristics

• High-aspect ratio mainsail (3.02 P/E) generates significant lift and reduces tip vortex drag.
• Tall foretriangle (3.60 I/J) optimizes the slot effect with non-overlapping jibs.
• Wide 3.65m beam provides ample form stability to carry the 73m² upwind plan.
• Close-winded performance allows for high pointing angles in competitive fleets.

Sailing Considerations

• The C&C 115 is sensitive to backstay tension to control mast bend and mainsail depth.
• Typical racing crew requirements range from 6 to 8, though the jib-led configuration is manageable for shorthanded cruising.
• Expect a stiff, stable ride with predictable helm feedback up to 20 knots of true wind.

Sailmaking Recommendations

For the C&C 115, 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 and light-air acceleration. For cruising or bluewater sailing, add a taffeta protective layer on both sides to enhance UV resistance and abrasion protection. Based on the 3.02 P/E ratio, a tri-radial fiber layout works best to handle the vertical loads of the high-aspect main. A typical inventory includes a performance mainsail, a versatile #1 jib, and an A2 spinnaker. With 73m² of sail area, plan to reef around 18-20 knots to maintain optimal heel and boat speed.

Conclusion

The C&C 115's high-aspect rig and modern hull form make it a formidable performer when equipped with high-modulus sails. Explore sail options for C&C 115 to unlock its full racing and cruising potential.