Encapsulated or Bolt On Keel? - Page 4 - SailNet Community
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post #31 of 47 Old 06-17-2011
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Encapsulated

You are correct. Just had a pro take a look; did not see any other structural strain indications. Looks like cutting back damaged glass and foam then laying up filler and epoxy and glass to original shape and barrier coat.
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post #32 of 47 Old 06-18-2011
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Great !
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post #33 of 47 Old 06-18-2011
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My S2 has an encapsulated keel and I love it. My philosophy is that unless I go aground at least once every time I go sailing then I am not trying hard enough to explore, of course it is all oyster bars too and not rock. However, I have hit a couple of things very hard including en engine block and a whole truck (after the storm of '93) and my keel is fine whereas a bolt-on keel would have been very suspect afterwards.
On bolt on keel, much of the strength is in those keel bolts, whack em a few times and fatigue cracking starts, scares me just to think about it. On an encapsulated keel, the tensile strength of the glass holding everything on is probably an order of magnitude higher than the keel bolts of an external keel and does not fatigue crack as do the bolts.
Even if I were to make a jagged hole in the fiberglass, it would be easy to repair using epoxy from the outside and I know I could do it myself. Fixing suspect keel bolts? Not something I'd want to do.
Think about grounding on sand with both types of keel. How many SMALL waves would it take pounding your boat on the sand for your external keel to make its strength suspect and require she be hauled for inspection? Do the same on an internal keel and nothing happens. External keel failures in-use kill people whereas encapsulated keels after an impact might fail slowly if at all and the boat would probably only show increased leakage at the dock.
I feel that the encapsulated keel is much safer. In fact, I would not even consider an older boat with an external keel.
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post #34 of 47 Old 06-19-2011
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Better Keel

Thanks for your insights. I'm getting quotes from local yard. They had three boats in for similar keel damage. Cost of a something more than a depth sounder might be a good investment too.
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post #35 of 47 Old 06-19-2011
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Where is this place with all these damaged keels??

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post #36 of 47 Old 05-10-2015
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Re: Encapsulated or Bolt On Keel?

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Originally Posted by Frogwatch View Post
My S2 has an encapsulated keel and I love it. My philosophy is that unless I go aground at least once every time I go sailing then I am not trying hard enough to explore, of course it is all oyster bars too and not rock. However, I have hit a couple of things very hard including en engine block and a whole truck (after the storm of '93) and my keel is fine whereas a bolt-on keel would have been very suspect afterwards.
On bolt on keel, much of the strength is in those keel bolts, whack em a few times and fatigue cracking starts, scares me just to think about it. On an encapsulated keel, the tensile strength of the glass holding everything on is probably an order of magnitude higher than the keel bolts of an external keel and does not fatigue crack as do the bolts.
Even if I were to make a jagged hole in the fiberglass, it would be easy to repair using epoxy from the outside and I know I could do it myself. Fixing suspect keel bolts? Not something I'd want to do.
Think about grounding on sand with both types of keel. How many SMALL waves would it take pounding your boat on the sand for your external keel to make its strength suspect and require she be hauled for inspection? Do the same on an internal keel and nothing happens. External keel failures in-use kill people whereas encapsulated keels after an impact might fail slowly if at all and the boat would probably only show increased leakage at the dock.
I feel that the encapsulated keel is much safer. In fact, I would not even consider an older boat with an external keel.
This is twice I have heard of you hitting a submerged Truck, I for one need more information on this incident. Sorry I should have asked earlier.
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post #37 of 47 Old 05-10-2015
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Re: Encapsulated or Bolt On Keel?

Some sailors with bolt-on keels know two important things:

1. A bolt-on keel is far more efficient.
2. How to avoid hitting things hard.

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post #38 of 47 Old 05-10-2015
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Re: Encapsulated or Bolt On Keel?

This is from a boat with bolt on keels. The boat grounded on soft sand and was left to be recovered in the morning. This was the result.
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post #39 of 47 Old 05-10-2015
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Re: Encapsulated or Bolt On Keel?

I've done many bolt on keel boats and to my knowledge not one single keel of mine has fallen off. I'd be careful about lumping all bolt on keels into one category. I'm quite confident this keel for the new PSC 63 will not fall off.

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post #40 of 47 Old 05-10-2015
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Re: Encapsulated or Bolt On Keel?

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Originally Posted by celenoglu View Post
This is from a boat with bolt on keels. The boat grounded on soft sand and was left to be recovered in the morning. This was the result.
Soft grounding or not that one was coming off anyway. Is this supposed to be an example of how that type of Keel is bad.
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