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Hi Marc and welcome aboard. I've been pretty busy with another subject so
my welcome is a little late.
The only guy I know of besides Brian using concrete is Wil, who's building
a 200 ton sub for a local guy.
He has the idea of using complete spheres as the pressure hulls, with two
or more joined for separate sections and then the whole thing covered with a
streamlining fairing. Although I have no experience with concrete vessels, the
idea always seemed interesting. By using smaller spheres the overall weight can
be reduced.
Anyway, glad to see another guy join up. Frank
D.
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