This self-draining (SD) design was first made in 1986, and introduced for the benefit of those owners who kept their boats on moorings, since any water automatically drained from the two self-bailers on each side of the hull. The sealed area between the floor and the hull raised the floor above the level of the water. It also provided and additional volume of buoyancy. However, this does tend to cause the boat invert more easily after it has capsized, and it is advisable to use sailhead buoyancy. After righting the SD from a capsize water tends to surge from one side of the boat to the other, causing instability. To help overcome this, drain tubes are allowed to be fitted through the stern tanks of the SD, and they are permitted to be used during Class racing.

Cruiser's comment: Unsuitable for sleeping aboard!