Fin-keeled Sailboats on Grids - SailNet Community
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post #1 of 12 Old 04-08-2019 Thread Starter
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Fin-keeled Sailboats on Grids

Sailheads,

Thinking about doing some below-the-waterline work on a grid instead of going through the expense of hauling out.

Thing is, I've got a fin keel and was wondering if I would damage my hull by resting the full weight of the boat on it.

Any thoughts about this or any other things I ought to think about before I attempt this?

Cheers.

Ed
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post #2 of 12 Old 04-08-2019
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Re: Fin-keeled Sailboats on Grids

Are you doing this in the water, not sure how you mean but accomplish this but a good bit of the weight is resting on the Keel when hauled, my guess would be 60-80%, bracing is to steady, some weight is distributed but not as much as on the Keel.
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post #3 of 12 Old 04-08-2019
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Re: Fin-keeled Sailboats on Grids

I don't see a problem. If the boat can't take her own weight on her keel, then there are probably other problems that need to be addressed. It is best if you have a rub rail to rest the boat against the piles.
As mentioned Jack stands in a yard are mainly to keep the boat upright and should be taking any significant weight of the weight of the boat. By overtightening the stands is how yards and unknowledgeable people do damage to boats.

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post #4 of 12 Old 04-09-2019
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Re: Fin-keeled Sailboats on Grids

The entire weight of the boat should be taken up by the keel when hauled on any boat. The stands are only there to keep the boat from tipping over. Drying out the boat on the tide will work with a fin Keeler if the boat will sit on the keel with side supports to keep it upright. I used halyards tied to anchors to insure the boat wouldn't tip over. Boats that are regularly dried out on the tide have boards that bolt to the sides of the boat. One thing to be concerned about with a fin keel boat is fore and aft stability. Some boats, especially ones with raked keels, may fall over forward without support. May want to have a piece of scrap lumber to prop the bow up.
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post #5 of 12 Old 04-10-2019
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Re: Fin-keeled Sailboats on Grids

Ed, how much work? Your marina may be willing to do a short haul, on Friday afternoon, and leave it sit until Monday morning.
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Re: Fin-keeled Sailboats on Grids

Quote:
Originally Posted by Ed Kinney View Post
.....instead of going through the expense of hauling out.

...wondering if I would damage my hull by resting the full weight of the boat on it.
These seems to conflict, so not sure what you're asking. Bottom line is that any boat should be designed to take it's weight on it's keel, when on the hard. Totally normal. All keel types.

If you're removing the internal grid to modify it, while on the hard, that may change the engineering.


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post #7 of 12 Old 04-10-2019
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Re: Fin-keeled Sailboats on Grids

Clue... when your boat is hauled, blocked on the hard with jack stands... the weight is on the keel. Sure the stands are carrying some load... but it a small fraction of that on the keel.

pay attention... someone's life depends on it
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post #8 of 12 Old 04-10-2019
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Re: Fin-keeled Sailboats on Grids

As noted above, if your boat can't sit on its keel you have other, structural, concerns.

With a fin keel boat on a tide grid the real concern is whether or not the boat is balanced longitudinally - some boats want to go bow down when the water goes away.

I, myself, personally intend to continue being outspoken and opinionated, intolerant of all fanatics, fools and ignoramuses, deeply suspicious of all those who have "found the answer" and on my bad days, downright rude.
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post #9 of 12 Old 04-10-2019
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Re: Fin-keeled Sailboats on Grids

Tidal grids are still common on the coast, often harbouring a fin keel bow down, cleats askew.It would appear that some underestimate the thought needed. Many tidal grids have cross timbers so the keel is a single point contact.That makes it tricky to balance.
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post #10 of 12 Old 04-12-2019
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Re: Fin-keeled Sailboats on Grids

Interesting thread to compare with one on a French site (check out the photo here:https://www.hisse-et-oh.com/forums/l...-sur-la-quille ) where a boat's keel pushed up through the hull when they went to put it on a grid. The general consensus there was that a boat should NOT be expected to rest fully on its keel, and should not be stored that way. They seemed to think that it was important to support the hull independently, and that one should not expect the keel to hold up the hull. If that is the case, it is hard to imagine how they expect the boat to be lifted in slings without the keel dropping off, but they seemed willing to ignore that issue.
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