Description
C. Sherman Johnson Tubular Turnbuckle | Boat Supply Store
For offshore racers and cruising sailors upgrading to modern synthetic lifelines, this tubular turnbuckle provides a critical connection point. Its integrated splice eye is specifically engineered for secure termination of high-strength Dyneema/Spectra lines, offering a significant weight reduction over traditional wire rope systems. Approved by US Sailing and ISAF for offshore racing, it ensures compliance with stringent safety standards and facilitates the integration of advanced rigging technologies on vessels operating in demanding marine environments.
Key Features
- Streamlined tubular turnbuckle design for reduced windage and weight.
- Integrated splice eye simplifies termination of Dyneema/Spectra lines.
- Lightweight performance reduces overall rigging mass for enhanced boat speed.
- Facilitates easy splicing of high-tech fibers to standard marine hardware.
- Offshore racing approved by US Sailing and ISAF for critical lifeline applications.
- Durable, corrosion-resistant construction for extended service life in saltwater.
- Direct upgrade path for vessels transitioning from wire rope lifelines.
- Engineered for Dyneema/Spectra to maximize strength-to-weight ratio.
Specifications
| Product Specifications | |
|---|---|
| Tubular turnbuckle design | Yes |
| Integrated splice eye for Dyneema/Spectra line | Yes |
| Designed for lightweight performance | Yes |
| Facilitates easy splicing of high-tech lines to standard fittings | Yes |
| Approved by US Sailing and ISAF for offshore racing lifelines | Yes |
| Dyneema line not included | Yes |
Who This Is For
Offshore racers and cruising sailors seeking to transition to lightweight, high-performance Dyneema/Spectra lifelines. This fitting is ideal for DIY riggers and boat owners who prioritize modern, compliant, and durable rigging solutions.
How It Compares
| Feature | C. Sherman Johnson Tubular Turnbuckle | Competitor |
|---|---|---|
| Primary Line Type Compatibility | Dyneema/Spectra | Wire Rope |
| Splicing Eye Design | Integrated Splice Eye | Eye to Eye |
| Weight Focus | Lightweight | Typically less capable |
| Approvals | US Sailing & ISAF Offshore Racing | Not specified for Dyneema/Spectra |
Common Concerns Answered
What are the benefits of using Dyneema/Spectra lifelines?
Dyneema/Spectra lifelines offer a significantly higher strength-to-weight ratio compared to traditional wire rope, resulting in reduced windage and improved boat performance. They are also more flexible, resistant to UV degradation, and do not corrode, leading to a longer service life in harsh marine environments.
Is professional splicing recommended for this product?
Yes, professional splicing is strongly recommended for optimal safety and performance, especially for offshore racing applications. While the fitting is designed for integration, achieving a reliable and compliant splice requires specialized skills and tools to ensure the full strength of the Dyneema/Spectra line is utilized.
Why is Dyneema line not included with the turnbuckle?
Dyneema line is not included as the length and specific type required can vary significantly based on individual boat configurations and rigging plans. This allows boat owners to select the precise Dyneema/Spectra line that best suits their vessel's specific rigging requirements and performance goals.
Frequently Asked Questions
What is a tubular turnbuckle with a splice eye used for?
A tubular turnbuckle with a splice eye is utilized for terminating and tensioning high-performance synthetic lines, such as Dyneema or Spectra, within marine rigging systems, most commonly for lifelines. The splice eye allows for a direct splice of the synthetic line, while the turnbuckle mechanism provides adjustability for tensioning.
Can I use Dyneema line with the C. Sherman Johnson Tubular Turnbuckle?
Absolutely. This C. Sherman Johnson turnbuckle is specifically designed with an integrated splice eye to facilitate the termination of Dyneema and Spectra lines, enabling the creation of modern, lightweight, and high-strength lifelines.
Is professional splicing recommended for this product?
Yes, professional splicing is highly recommended. While the fitting itself is designed for ease of integration, the integrity and ultimate strength of the splice are critical for safety, especially in offshore racing applications. This ensures the synthetic line is properly terminated to its rated breaking strength.
What are the benefits of using Dyneema/Spectra lifelines?
Dyneema/Spectra lifelines offer superior strength-to-weight ratios, reduced windage, and excellent UV and chemical resistance compared to traditional wire lifelines. They are also more flexible and will not corrode, providing a durable and high-performance rigging solution.
Are C. Sherman Johnson Splice Line fittings lightweight?
Yes, C. Sherman Johnson's tubular turnbuckles with splice eyes are engineered for lightweight performance, significantly reducing the overall weight of the rigging system compared to traditional wire rope and associated hardware.
