Antal Mainsheet Tackle 8:1 – Complete, Sheaves 75 & 60

The Antal Mainsheet Tackle 8:1 – Complete, Sheaves 75 & 60 is a high-purchase mainsheet system engineered for larger cruising yachts up to approximately 40 feet. Offering a mechanical advantage of 8:1 and an overall Safe Working Load of 1000 kg, this system provides powerful sail control in a smooth-running, compact package—ideal for demanding cruising environments and heavier mainsails.

This configuration features a 75 mm primary sheave located in the lower block, with a triple 60 mm block (with becket) mounted directly above it to anchor the start of the sheet. The boom is fitted with two additional 60 mm blocks—a triple and a single—resulting in a total of seven 60 mm sheaves and one 75 mm sheave. The integrated cam cleat at the base of the system offers quick, convenient control of the mainsheet line.

Key Features

• 8:1 Mechanical Advantage
  Ideal for larger boats or high-load sail plans, this system offers significant trimming power with minimal physical input.
• Upgraded Sheave Configuration
  Combines one large 75 mm sheave for primary load bearing with seven 60 mm sheaves to maintain smooth movement and balanced load distribution throughout the system.
• Triple Becket Block Anchor
  A triple 60 mm block with becket starts the system from above the lower sheave, providing efficient geometry and a secure anchor point for the mainsheet.
• Boom-Mounted Blocks
  A triple and a single 60 mm block on the boom complete the 8:1 reeving, allowing for a compact and efficient deck layout.
• Integrated Cam Cleat
  The lower block includes a cam cleat to allow easy locking and releasing of the sheet for quick manoeuvres and secure trim adjustments.
• Low-Friction Performance
  All sheaves operate on dual ball bearings for smooth, controlled movement under load.
• Rugged Construction for Marine Use
  Fabricated from hard anodised aluminium and stainless steel, the system is designed for durability in corrosive saltwater environments.

Specifications

• Sheave Sizes: 1 × 75 mm (lower), 7 × 60 mm (upper and intermediate)
• Configuration:
  • Upper: Triple and single block (60 mm sheaves)
  • Lower: Single 75 mm sheave with mounted triple 60 mm becket block above, plus integrated cam cleat
• Rope Compatibility: Up to Ø12 mm
• Safe Working Load (SWL): 1000 kg
• Recommended Boat Size: Up to 40 ft (12 m)

The Antal 8:1 mainsheet tackle with 75 and 60 mm sheaves is a top-tier solution for larger yachts requiring maximum control, reliability, and efficient sail handling. Its robust construction and refined geometry make it an excellent choice for cruisers looking to enhance their rig with high-performance hardware.