Welcome to the UKWA Home Page Forums Technical Jib Furling Systems – an enquiry! Re: Re: Jib Furling Systems – an enquiry!


Yes, while rolling (reefing) a Genoa the centre of effort goes down a bit but not as much as you may think. While rolled the foot of the sail goes up as well. Now have a look at a storm jib and notice that it is cut with a lot of clearance between the sail and the deck. This is to allow water coming over to drain quickly over the side rather than being led in to the cockpit by the sail. Because of this the centre of effort can’t be as low as we might wish it to be. You may find that a rolled Genoa actually looks a bit like a storm jib. Given, the Genoa’s foot is up in the air front to back while a storm jib is simply cut high and its foot still ends at the bow. It is not so much lowering the centre of effort but de-powering the sail and allowing water to drain.

With the main you are right, there the centre of effort clearly goes down.

An advantage of a roller reef is that it allows continues adjustment and hence allows very fine tuning of the balance of the boat. But most of the power comes from the main, a fore sail only makes the main more efficient. Try sailing with and without your Genoa, didn’t you ever wander why the combined centre of effort doesn’t move much? Taking the fore sail away seriously de-powers the boat and may be the safest and cheapest option.

Bottom line: If the going really gets tough, you only want to get home safely and on a Wayfarer that can be done with any configuration. A furler is only a convenience, it is not money but common sense that brings us home safely. Did I just hear someone say a boat is as seaworthy as its skipper? 🙄