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rptb1: Tammy Norie's original rig, 3.6m battens, 60° yard. Area 18.6m².
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rptb1: Sketch of a rig with 4.5m longest batten, 1m panels, 20% lead, 40° short yard, cosmetic curves! Approx area 22m².
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rptb1: Sketch of a rig with 4.5m battens, 1m panels, 20% lead, 25° yard supported by cloth triangle. Area approx 22.4m².
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rptb1: Sketch of a rig with 4.5m battens, 1m panels, 20% lead, 40° yard, 5° rake. Area approx 25m².
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rptb1: Sketch of a rig with 5° mast rake and a yard supported by an upper triangle.
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rptb1: Sketch of a large split rig with 4.5m battens. 25% lead, area approx 23.3m²
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rptb1: The “Spitfire Junk” sail plan, based on research by C A Marchaj, which showed that elliptical sails generate more lift, especially at low aspect ratios.