The latest piece of furling technology to come from Seldén is the Seldén Synchronised Main Furling system, which allows easy touch-button operation

A straightforward concept lies behind the appeal of in-mast mainsail furling systems: haul on the clew outhaul while allowing the sail to unfurl in a controlled manner. But what if that process could be automated, so the sail could be unfurled, furled or reefed by a single watchkeeper at the touch of a button?  That’s exactly what Seldén has achieved with the Selden Synchronised Main Furling (SMF) system.

The two key elements of the new system from Seldén are an in-mast electric motor that’s synchronised with one of Seldén’s compact E40i electric winches, which is used to control the clew outhaul.

Each motor has a dedicated control unit and they’re interfaced using Seldén’s SEL-Bus (a CanBus-type network) to enable reliable operation without overloading the outhaul. The speed of the E40i winch is also slowed automatically by reducing power to the unit if the load exceeds a predetermined figure.

When not in use the system automatically switches to a sleep mode to avoid consuming unnecessary electrical power. To avoid the need to run hefty low-voltage wiring, and to enable physically smaller motors to be used, the yacht’s 12V or 24V DC power is stepped up to 42V.

The system, including the in-mast motor, can be retrofitted on boats with Seldén’s long-running RB and RC furling mast sections that are suitable for yachts of 36-50ft. It has potential to find favour with owners who value the ability to finely control sail area at the touch of a button, as well as those looking to reduce the physical effort needed to sail.

Selden Synchronised Main Furling system

Price: €7,650
Buy now from seldenmast

If you enjoyed this….

Yachting World is the world’s leading magazine for bluewater cruisers and offshore sailors. Every month we have inspirational adventures and practical features to help you realise your sailing dreams.
Build your knowledge with a subscription delivered to your door. See our latest offers and save at least 30% off the cover price.