Wooden Block Triple Sheave with Shackle for Marine Rope Rigging and Load Handling

Triple Sheave Configuration for Enhanced Mechanical Advantage in Rope Lifting

The wooden block triple sheave with shackle is engineered to multiply lifting efficiency by distributing rope movement across three rotating sheaves. 

This setup significantly reduces the required pulling force while maintaining controlled and stable rope travel, making it suitable for demanding marine rigging, dock operations, and traditional multi-line lifting systems. 

It is especially valuable where heavier loads must be managed using manual or low-power winch assistance.  

Commonly applied in medium to heavy rope handling systems using natural fiber ropes such as manila or sisal.  

Contact us to evaluate your lifting configuration and confirm suitable working load limits.

Shackle Connection for Secure and Stable Fixed Rigging Points

The integrated shackle provides a strong and standardized attachment point, ensuring dependable load transfer in fixed or semi-permanent rigging systems. 

This design enhances operational stability and safety, especially in marine deck installations and structured lifting environments where movement at the connection point must be minimized.  

Shackle size, pin type, and load rating can be specified according to project requirements.  

Send us your attachment details to select the correct shackle specification.

Rope-Friendly Multi-Sheave Groove for Natural Fiber Rope Protection

Each sheave is carefully machined to allow smooth rope rotation while minimizing abrasion, compression, and heat buildup. 

This rope-friendly design helps preserve the strength and service life of natural fiber ropes, which is critical in traditional and marine lifting systems where rope integrity directly impacts safety and performance.  

Groove dimensions are matched to rope diameter, construction type, and operating tension.  

Contact our technical team to match groove profiles to your rope specifications.

Reinforced Wooden Block Body for Outdoor and Marine Conditions

The wooden block structure is adapted for use in outdoor and maritime environments where compatibility with traditional rigging materials is required. 

Proper wood selection and treatment improve durability while maintaining the classic appearance often specified for sailing vessels, restoration projects, and heritage marine equipment.  

Wood species, anti-moisture treatment, and surface finishing depend on climate exposure and service frequency.  

Reach out to determine the best material treatment for your operating environment.

Optimized Weight-to-Strength Ratio for Manageable Handling

Despite its multi-sheave structure, the wooden block triple sheave with shackle maintains a balanced weight that supports manual handling and installation. 

This advantage is important for onboard marine operations and traditional rigging work where equipment must be repositioned without heavy machinery.  

Total weight and overall dimensions vary according to sheave diameter and working load limit.  

Request dimensional drawings and weight data to support your equipment planning.