The Solitair 28 is a sailboat with a length of 28ft (8.50m) designed for singlehanded sailing. It is a concept without a jib, so only with a mainsail and a gennaker. Weight stability is achieved by water ballast tanks, which can easily be filled with electric pumps. The gennaker is hoisted from a shute. The boat is easily trailerable by using a retractable keel and also the mast is easy to stow, because the mast is sliding below the deck in a box. By designing the boat entirely in composite, the boat remains light and will be exciting to sail.