 The sail is a Marconi rig (aka Bermuda rig), with the mast far forward on the hull, as is the norm for a cat boat.The boat has a retractable galvanized steel centerboard, and a shallow-draft aluminum rudder similar in shape to New England-style cat boats.The design was created by Norm Bell and John Larimore in the mid-1950s and used then-current polyester resin and fiberglass construction techniques.