On Wed, 04 May 2005 05:40:12 -0700, iceman390 wrote:

we can use some sort of mesh or something to get the cement to hold a
shape, but it cannot be wood, or something else that would provide
buoyancy that way.

Use chicken wire, then.

Make the boat a simple sqare box maybe half an inch thick.

You'll have to work out how big each side is based on your cu. ft. limit.

Since it is a school project, I won't say much more than that. Come to
think of it, I'd probably lead you in the wrong direction anyway since
I've never had any training as a marine architect.

Good luck!

--Mac