I'm thinking it is a system for building hulls where you have a form
that is curved in the width and length that you can laminate a panel
on, in either fiberglass or veneered wood. You can then take 2 panels
of the same size and put them together for a hull or 4 panels of the
same size for the 2 hulls of a catamaran. Using the same form, you
could also make 1 big center hull, and then using just part of the area
of the form to make 4 smaller panels for the ama's(?) (outside hulls)
of a trimaran. The curvature (camber) of the form being constant or the
same on both sides of the center point allows the 2 panels to be
reversed, put together and the shape of the hull ends up being
symetrical.