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From: (no name) (no email)
Date: Thu Jul 03 2003 - 00:03:58 EDT
"Baumgart, James" writes:
>Cons of fiberglass
>
>blisters
Yes, if it is a polyester laminate.
An epoxy laminate solves this problem
>hull deck joint
Depends on the builder. Definitely something to check out.
>deck delamination (take care of these 3 in survey)
Especially if balsa or plywood has been used as a deck core material.
EVERY penetration must be properly sealed or rot is sure to happen.
Something that the low cost production builder sometimes omit.
>greater catastrophic damage potential upon hard grounding, hitting
>reefs,
>rocks, or floating containers
Maybe, depends on the laminate.
A sandwich cored hull using Airex solves this problem.
>Pros of steel
>
>stronger hull, pound for pound
Huh! ! !
You just failed Basic Strength of Materials 101.
As an example, when is the last time you flew in a steel airplane?
Steel is low cost and usually ductile, but relatively weak when compared
to other materials on a pound for pound basis.
The big advantage of steel is low initial cost
>you can make the rigging and deck hardware bulletproof
Really! !
Might want to take another look at that one.
These days, high performance synthetic ropes are used to make steel cable
rigging repairs while under way rather than carry a steel cable spare.
Haven't seen very many steel winches, blocks, pad eyes, etc, etc, but
maybe they are out there.
Now anchor chain, that is a different matter.
>easier to repair serious damage (holing)
I take exception to this myth.
To repair metal, you are or have access to skilled welding resources
which includes not only the equipment, but also an understanding all the
funny things that happen to a piece of metal that has not been annealed,
when it is heated.
>easier to engineer watertight bulkheads, etc.
Huh ! !
I don't have a clue what is the scientific basis of that statement.
<snip Cons of steel>
The Dutch seem to have mastered the construction of metal boats, either
steel or aluminium.
If you want a new metal boat, try Manfred Kanter, just outside Port
Stanley, Ontario.
Manfred builds quality metal boats above 40 ft. (Take a big sack of gold
when you go)
If I seriously wanted to consider a used metal boat, I would look at
boats professionally built in Holland, or by Kanter (Good luck finding
one), and if possible, professionally maintained.
Anything else you find should be at least one, maybe two, cuts below the
above, IMHO.
Good luck in your search.
Lew
S/A: Challenge, The Bullet Proof Boat (Under Construction in the
Southland)
Visit <http://home.earthlink.net/~lewhodgett> for pictures
There are no problems, only varying degrees of challenging opportunity.
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