Jeff wrote:
If it was designed into the boat, it would be 13 cu ft per foot,
or about 3 inches thick around the hull and deck. This would
also add a lot of stiffness, insulation, collision protection, etc.
However, if you were doing it from scratch, you'd probably
pick a much lighter design - the Etap 46 is 27000 lbs while
the Tayana is actually 42000.


Tells you something about the supposed practicality of extremely heavy
boats, doesn't it?

Anyway you should subtract the tankage from the displacement figure,
because it's already flotation. And it is easy to picture the volume
required, if you fill the hull up to 1" above the LWL with bouyancy, you
have created an unsinkable boat... what's more, one in which the volume
distribution of the flotation is guaranteed to keep it stable.

wrote:
Maybe it's easier to make a MacGregor seaworthy than to make
a Tayana unsinkable :-)

That's easy, just redefine "seaworthy" and print up a few advertising
brochures.

Fresh Breezes- Doug King