It has twin fixed bilge keels, and a simple sail plan of headsail and mainsail. We were reduced to forereaching with a deeply furled headsail and double reefed main. The genoa employs a headfoil (a headsail airfoil-shaped reinforcement) and a concealed backstay adjuster. The boat could carry a headsail and a square rigged sail. A headsail is any sail forward of the foremost mast on a sailboat. The design features a spade rudder and a Bermuda rig with a large, overlapping headsail. The headsail can be masthead-rigged or fractional-rigged. They use a large headsail to increase sail area. At that point shortening up the headsail flattens the boat and keeps the speed up. This control is used to adjust the amount of "sag" in the headsail. A smaller headsail is easier for a short-handed crew to manage.