Winch and Jibsheet Wind Load Calculator
Wind jib sheet load based on the Harken formula with inputs to calculate sail area so it is a little easier to use. The winch recomendation is based on the book "The Complete Rigger's Apprentice" by Brion Toss. Enter boats "J" and either "I" or the luff dimension. Enter sail size in percent to get line load and derating recomendations.