Abstract: A sail system for a sailboat having a stayed, non-rotatable mast includes first and second booms, a single sail suspended from said masthead, the sail having a shape such that, with the vertical midline of the sail positioned along the mast, a generally triangular sail portion is formed on the port side of the sailboat and a second, symmetrical, sail portion is formed on the starboard side, both said starboard and port sail portions having substantial roach areas; and backstay means connected between said masthead and the stern portion of the sailboat to bend the masthead aft.