I think what we need is technology that will allow hulls, both light and heavy, to be built more inexpensively! And that does not necessarily require "modern" technology.

I'm waiting for someone to come out with a basketweave design for hulls. Or a design for carving hulls out of blocks of styrofoam (a la the Snark).

If money is no object, I'm sure the technology must be available to build a boat that is light as a feather but as strong as steel.