Patent ID: 8739721

Claim:
A sail having a generally triangular shape, with a head portion at a top, a foot portion at a bottom, a tack portion at a forward end of the foot, a clew portion at an aft end of the foot, and a tuff portion extending from the head to the forward end of the foot, the sail further comprising: a plurality of bi-radially cut panels, the panels generally arrange as an upper radial section and a lower radial section, the upper radial section comprising some of the plurality of panels, and the lower radial section comprising other ones of the plurality of panels, with the panels forming the upper radial section and the lower radial section overlapping along a longitudinal seam; the panels in the upper radial section generally running from the longitudinal seam to the head, and the panels in the lower radial section generally running from the clew to the longitudinal seam and to and to a lower portion of the luff; a luff tube attached along the tuff, the tuff tube shaped to accommodate a mast formed of two mast sections that fit together at a mast joint; the longitudinal seam extending to a location on the luff tube above the mast joint; a tuff tube patch disposed on the luff tube adjacent the luff, the longitudinal seam and the mast joint; and further wherein the luff tube has a cut-out in a center portion thereof, and the luff tube patch is positioned over the cut-out.