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Old 11-13-2000
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Beneteau in mast furling

I am ordering a Beneteau 311 and am debating whether to go for the in mast furling. It seems appealing from a convenience standpoint but I am concerned that I may pay too high a price in terms of loss of performance. The sail area is 60 sq. ft. less with in boom furling. The std sail is a full batten system. Would appreciate input - particularily from those currently using furling mains.
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Old 11-13-2000
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Beneteau in mast furling

I have in mast furling on my 321. I really love it. The boat performs well. If racing is your thing you would want the full batten main. We wanted the convenience of the roller furling.
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Old 11-14-2000
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Beneteau in mast furling

Having observed the performance of in mast furling on a number of boats I strongly recommend against it. They really seem to give up speed, light air performance and windward performance. Sailmakers tell me that in mast furling sails have short lives (very high leech loads stretch out the leech and there are no battens to support the edge. This is especially if used reefed) The boats that I have observed sailing in higher winds end up with really poor sail shape in a breeze as the leech creeps toward the foot powering the sail up rather than blading the sail out.

There is a major compromise on performance and for what gain? Is it that much harder to put on a sail cover with a dutchman system than to roll in a mainsail.

I just don''t see it. I guess to some extent this might change with sailing venue but in a venue like the Chesapeake, where I sail, (known for predominantly light air punctuated by high winds) in mast furling makes less than no sense.

Respectfully
Jeff
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Old 11-14-2000
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Beneteau in mast furling

Thanks for the comments - I''ve decided to stay with the traditional sail - While not a racer I know that on those occasions that another boat is able to slip by me I would always be thinking - if only I had those extra square feet and a little better shape -
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Beneteau in mast furling

Jeff,

At the risk of seeming like a total neophyte, I have to ask - what is a dutchman system?

Dave...
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Beneteau in mast furling

One of the big appeals to in-mast furling is that at the end of a sail you do not have a sail to flake (fold on the boom). With slugs (slides in the mast) folding the sails on a small boat, say under about 33-35 feet is not too hard, and if you are in good shape its no big deal to flake a sail by yourself but as boats get larger, or people are less physically able, it gets harder to flake a sail on the boom.

The Dutchman is a patented system that flakes the sail on the boom as the sail comes down. It consists of a series of vertical wires or monofiliment that pass alternately through grommets in the sails. Since the wires are tight and pass back and forth from one side of the sail to the other, as the sail lowers it folds in neat flakes of near equal size. In many conditions it is simply then a matter of tying on a few sail ties, and putting the sail cover on. Like many other options it complicates things a bit and the system is not terribly cheap, but it allows the roach (the aft curvature of the sail) to be cut normally and to use battens, both of which increases performance and the battens help extend the life of the sail. One negative to the Dutchman is that the folds are always on the same line fold after fold and this can take a toll on the fabric on those lines.

An older system is called lazy Jacks. Lazy Jacks are a series of small ropes that forma a simple spider web of sorts on either side of the sail and gather up the sail as it is dropped. Lazy jacks do not pass through the sails so the sail is not folded as it is lowered. The nice thing about lazy jacks is they can be taken out of the way so they don''t chafe the sail on a long passage. The bad news about lazy jacks is that they make it harder to flake the sails neatly and so sails are often tied off all bunched up with also greatly shortens the life of the sail.

I hope that helps explain the Dutchman.
Jeff
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Old 11-15-2000
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Beneteau in mast furling

It sure does. I didn''t realize there were so many ways to furl!!

Dave...
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