We build Formula 18 sails customized to your particular F18 catamaran model and crew weight. F18 sail designs include main, jib and spinnaker designs specific to the Falcon, NACRA Infusion(Mark1 and Mark2), AHPC C2, Hobie Wildcat, NACRA F18, AHPC Capricorn, Hobie Tiger, and Inter 18. Other models available by request. We build both large and small class size Formula 18 sails. We enjoy sailing in the class.