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Go Back   SailNet Community > General Interest > General Discussion (sailing related)
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  #11  
Old 02-16-2007
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I agree with everyone who said "don't do it"

It's called "hydraulic action" as the keel sinks at low tide the pressure is upward, no problem, they sit boats at yards on their keel.

The problem is with a rising tide forcing the hull up with the mud sucking the keel down. Good way to separate both. Take a look at my gallery, or google "wreck of the Irving Johnson" It took them two years to repair the hull.

Last edited by ianhlnd; 02-16-2007 at 08:45 AM.
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Old 02-16-2007
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I would think that a lot depends upon how far down into the mud the keel sinks at low tide. If it sinks far enough to come in contact with the hull, that would be one thing; if it just dunks a few inches of the keel it would be another. My keel just touches bottom at low tide, and during spring tides it sinks in a few more inches, and I can't get in or out for a good hour or so on either end of the tidal movement.

I have a question for Ianhlnd: Sweet sassymolassy, who is that gal?
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  #13  
Old 02-16-2007
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sailhog: I have a question for Ianhlnd: Sweet sassymolassy, who is that gal?

One of my friends, not really a girlfriend, well, kinda. I'm trying to get her to model for me but she's a little shy. I'm desperate for crew, and she likes sailing.
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Old 02-16-2007
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ianhlnd,
Looks like she knows what to do in between the sheets, so to speak.
sailhog
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Old 02-16-2007
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ianhind ... yes indeed, a few pointers regarding deck fluff stuff in Giu's direction if you would be so kind ... sets his standards a wee bit low.
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Old 02-17-2007
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While I agree with those who wonder why you would willingly berth your boat in a slip that you know will regularly be too shallow for you to get in to or out of, I see keels in the mud all the time here in the San Francisco Bay Area. The bottom is generally a very soft, deep mud and unless the keel is bouncing on something hard that is buried in the mud, damage is a real rarity. Repeated mud immersions will abrade bottom paint off or render it inert, however.
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Old 02-24-2007
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My Newport 30 was kept in a slip (by the previous owners)where it sometimes bottomed out into a muddy bottom in Vallejo CA. The boat moving around eventually caused damage to the hull to keel joint. It cost them $1000 for the repair so paying a little more or having a good slip in a less convenient location may be worth it
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Old 02-24-2007
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Nasty Keel

I have a 6' draft on my 34 Pearson that I bought recently. When I found it, it was sitting on the keel in the mud leaning against the dock. The previous owner told me that only happens at low tide. When I got to see the bottom it looked like I had a wing keel made from barnacles. Try to find a better place!
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Old 02-26-2007
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I kept a boat many years ago at a slip that had that problem. It was sometimes inconvenient to arrive at the dock and not be able to get out, or not be able to get back, but I lived with it because the slip was free. I even bought a tide phase watch to time my arrivals and departures. Since then, I've had occasions where I needed to return to get out of a storm, or for other emergencies and I would hate to think of not being able to get back because of the tide fall. I certainly wouldn't pay for that type of headache.
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Old 02-28-2007
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The marina where I winter haul has nominal depths of 3 1/2 feet at low tide. They regularly moor boats with 5 and 6 foot drafts in their field. Normally this results in boats with paint and gel coat ground off the bottom (the "mud" is of course filled with rocks, clams, barnacles, etc. .. VERY abrasive.) The yard doesn't mind as repairs for this type of damage is fast an easy - goop on some epoxy, cover with paint.

This past summer, a particularly bad storm sucked most of the water out of the harbor. Many boats bottomed out, hard. This winter, the array of damage is amazing - bent/broken rudders, keels ground down to bare fiberglass, big holes, fin keels bent, horizontal stabilzers broken & distorted. To say nothing of the unseen structural damage.

Go find a mooring with enough water for your boat.
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