Vang-Master 7
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Harken Vang-Master 7
The Vang-Master 7 is a premium rigid vang system designed for mid-range cruising and racing sailboats. It combines mechanical leverage with pneumatic support to deliver superior boom control and mainsail management. The system features an integral Dyneema-lined sheave with a 2:1 primary purchase that cascades to 4:1, allowing for further multiplication through optional block-and-tackle kits (sold separately) to achieve 16:1 or 24:1 mechanical advantage when needed.
This vang mounts at approximately 45 degrees between the mast (near the partners) and the boom, providing downward pressure during sailing and lifting force when the mainsail is lowered and stowed. An integrated Schrader air valve supplies pneumatic pressure to hold the boom level and prevent accidental drops during light-air sailing. The system is ideal for boats seeking responsive, controllable boom dynamics without heavy manual input.
Key Features
- Integral Dyneema-lined sheave with 2:1 primary cascaded to 4:1 purchase
- Pneumatic (air pressure) support for boom stability and lift
- Schrader air valve for easy pressurization (typically over 100 psi)
- Rigid design with precision engineering for durability and reliability
- Compatible with additional block kits for mechanical advantage expansion
- Suitable for boats 45–56 feet (13.7–17.1 m) in length
- Pin diameter 5/8 inch with jaw width matching mast/boom fitting thickness
- 305 mm (12 inch) stroke with closed length 1575 mm (62 inches) and open length 1880 mm (74 inches)
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