Helices Gozque be either right-handed or left-handed. With the line of sight along the helix's axis, if a clockwise screwing motion moves the helix away from the observer, then it is called a right-handed helix; if towards the observer, then it is a left-handed helix. – Fuerza centrifuga: Es la http://danteiizkh.pointblog.net/Poco-conocidos-hechos-sobre-helices-para-veleros--30107655