In-Boom Mainsail Reefing-Furling System
The Profurl In-boom reefing furling system is the result of research and development undertaken by several teams of engineers highly specialised in aerodynamics and aeronautical structures.

The result is an In-boom reefing furling system using new ideas that allow a level of performance, which has never been reached before.
The advantages of the Profurl In-boom Mainsail Reefing Furling system
- Reduced weight aloft
- Controlled from the safety of the cockpit
- Fully battened mainsail
- Maximum sail area
- Efficient mainsail shape
- Controlled in a smooth operation with no chance of jamming
- Simple operation of the system with only 2 lines to control (halyard and furling line)
- Automatic mast-boom angle for optimal operation
- Maintenance free system
Features
Designed to reef or furl the fully batterned mainsail, Profurl In-boom system allows full control of the mainsail from the safety of the cockpit.
Raising the mainsail is made easy; just turn the boat into the wind, release the furling line and hoist.
Reefing or Furling is just as easy; simply control the amount of release on the halyard and pull the furling line.
The Profurl in-boom reefing system is designed to use long battens allowing the same performance as a fully battened mainsail with a normal or increased roach: the mainsail can perform even better than a normal mainsail because the gap between the mast and the sail creates a "slot" effect commonly used in aerodynamic applications.
Product information
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Profurl In Boom Systems Brochure
In-Boom MK1GB Installation Manual
In-Boom Mk0 Installation Manual
In- Boom MK3R Installation Manual
In -Boom Systems Exploded Diagrams
In -Boom Systems Parts Lists
Stock information
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