Lidgard Sails A5 Gennakers are a fractional running Gennaker. Used in heavy airs an A5 is a full shaped medium sized sail with a maximum luff length offering good stability and maximum power when running downwind. Usually constructed from 1.5 ounce Spinnaker nylon to increase longevity and reduce the risk of blow-outs. All our A5 Gennakers have structural luff rope and flat tapes for extra reinforcing around the edges. Lazy sheet preventers and clew strops for sheet peels are optional extras.