The curvaceous hull shape is revealed by cutting away the excess foam using a hotwire cutter, sliding the wire lengthwise along adjacent pairs of wood edges in turn. This is the beauty of my FOAMBOAT method, and the revelation never ceases to thrill! The foam cutter pictured is sold at hobby and other shops that sell foam shapes as bases for making wreaths and arrangements from plastic flowers. It uses two "D" cells, but I soldered wires onto mine so I could connect it to a power supply.
This is the first model I ever made using the method, and it worked perfectly. The fullsize hull uses the exact same process with the components scaled up from the original small drawing. For plans for a big-boy size foam cutter, link to my album "Cutting Rigid Plastic Foam," click page "READ FIRST" for instructions for reading and printing fine text. http://www.flickr.com/photos/sm_vermn/tags/foamcutter