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  Topic Review (Newest First)
4 Weeks Ago 11:16 PM
olson34
Re: Encapsulated or Bolt On Keel?

Quote:
Originally Posted by kamateboat View Post
Who are you Jeff - we are having big, big problems with our encapsulated keel and have printed out your information. Cannot use it as information for the Shipwrights without knowing if you are a qualified shipwright/engineer or another sailor with a story such as ours. Engineers want to remove our keel and replace it with a bolt on keel as they feel this is the only way to repair our boat and make it seaworthy again?

J & G
Your profile does not show any evidence that you own a boat. Please fill in some details of make and model and geographic sailing area.

BTW, I could envision the cost of keel removal and replacement with a different-engineered keel would would likely be way over the value of most boats. (?)

Note B: Whether a boat is designed with internal ballast or external ballast, there should be no intrinsic (or detrimental) difference in strength. I have owned both types over the decades, and both were well-built and designed by well-regarded NA.
4 Weeks Ago 10:26 PM
mitiempo
Re: Encapsulated or Bolt On Keel?

Quote:
Originally Posted by kamateboat View Post
Who are you Jeff - we are having big, big problems with our encapsulated keel and have printed out your information. Cannot use it as information for the Shipwrights without knowing if you are a qualified shipwright/engineer or another sailor with a story such as ours. Engineers want to remove our keel and replace it with a bolt on keel as they feel this is the only way to repair our boat and make it seaworthy again?

J & G
What design is the boat? Explain the problem in detail if possible.
4 Weeks Ago 07:36 PM
twoshoes
Re: Encapsulated or Bolt On Keel?

Quote:
Originally Posted by kamateboat View Post
Engineers want to remove our keel and replace it with a bolt on keel as they feel this is the only way to repair our boat and make it seaworthy again?
Not sure of the path that brought you to where you're at, but maybe get a second opinion just in case?

People in the business of removing keels and replacing them, may be biased toward removing keels and replacing them.
4 Weeks Ago 06:50 PM
Jeff_H
Re: Encapsulated or Bolt On Keel?

I am basically a person who has sailed for 50 plus years and maintained the boats that I have owned along the way.

I am architect (buildings) with a master degree in Architectural structures which had an unusual emphasis on structural engineering. I worked in boat yards when I was in high school and college where I had the chance to work on encapsulated keels with failed encapsulation envelopes and failed bonds between the ballast and the encapsulation. (My family had two boats with this serious versions of this issue) I have worked for a yacht designer at one point in my life, and have had training in yacht design. I have helped a whole lot of people repair their boats and so have crawled around the hidden corners of a lot of boats. I read a lot and have done much of my own maintenance work giving me hands on experience with a variety of conditions. ( For example, I am recoring my cockpit sole at the moment)

But the reality is that I see myself as being only an amateur which in fact reflects the reality of who I am.

Jeff
03-26-2017 04:49 PM
kamateboat
Re: Encapsulated or Bolt On Keel?

Who are you Jeff - we are having big, big problems with our encapsulated keel and have printed out your information. Cannot use it as information for the Shipwrights without knowing if you are a qualified shipwright/engineer or another sailor with a story such as ours. Engineers want to remove our keel and replace it with a bolt on keel as they feel this is the only way to repair our boat and make it seaworthy again?

J & G
05-12-2015 04:00 PM
Brent Swain
Re: Encapsulated or Bolt On Keel?

Drilling would let you know if you had pure lead or steel scrap.( Which could also be drilled and tapped, with greater difficulty)
05-11-2015 05:55 PM
deniseO30
Re: Encapsulated or Bolt On Keel?

Something I've thought about Brent! It would be major under taking since cabin soles are usually glass over the areas where new stringers would go.
05-11-2015 05:28 PM
Brent Swain
Re: Encapsulated or Bolt On Keel?

I once saw a 30 footer in Auckland on which the encapsulated keel had fallen off, with a clean break where the lead ended. One could always still put floors in, and drill and tap far into the lead for the keel bolts. That would give you the best of both worlds, structurally, without depending entirely on either, or worrying about corrosion in the keel bolts letting the keel fall off..
05-10-2015 07:28 PM
Maine Sail
Re: Encapsulated or Bolt On Keel?

Quote:
Originally Posted by celenoglu View Post
The method of attachment is not important in this case, the bolts did not gave up, the hull did and this can well happen with an encapsulated keel also.

Bobperry,
Your keel can also fall off, not due to the bolts but due to the place they are attached to.
You are aware that Bob's designs have circled the globe perhaps more than any other designers boats on the planet? Not one lost keel in all those designs.

I would not own an encapsulated boat the way most of them are designed. I'll choose a well designed bolt on keel every day of the week.. If I hit solid granite I will fair the leading edge and plop her back in the water the next day while the encapsulated boat dries out for two months before a "proper" repair can be made......
05-10-2015 02:15 PM
okawbow
Re: Encapsulated or Bolt On Keel?

I love old school full keel, encapsulated ballast sailboats. No problems with crab pots, nets, and debri. Soft and even minor hard groundings are less stressful.

It's hard to avoid all the things in the water that can damage your keel. The average sailor won't take advantage of the better upwind ability and manouverability that small bolt on keels provide. A recent survey shows that most of us own sailboats that are well over 30 years old. I don't want the uncertainty that comes with a bolt on keel that old.
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