On Thu, 5 Nov 2009 15:38:23 +0100, "Edgar"
wrote:

So there's one solution to avoid shipping seas - fill your boat with
"stuff!" B

There is a technical term called: ' sinkage '. This is the ammount a
given hold can increase in weight if flooded. The free space, in other
words. Around 48% for spheres of uniform size. Close to a quarter for
a cylinder in a cube. Very little for lumber.

Casady