Abstract: A rig battened with standoff battens presents a concave camber towards the wind on both tacks while remaining on one side of the mast as each batten comprises a member of a rigid leading portion connected to a flexible portion continuous to a semi rigid trailing portion. A holder attaches to the leading portion and the trailing portion to hold off the batten with presprung bow like arms. A ring part of the holder fixed on the opposite side from the arms attaches the batten assembly to the mast. Lines lead from the winch to the points at which the holder attaches to the batten such that on winching the arms are drawn back and the rig flattens out. Additionally the connection between the lead and the flexible center can be pined and the connection between the holder and the rigid leading part can be pined to an adjustable bracket part of the leading portion to enable it the leading portion to move out of curve with the batten to amplify the camber of the rig.