Catamaran Racing Association of Michigan

Outhaul
Definition: An outhaul is a line that runs from the clew (the back corner of the sail) to the end of the boom and used to control the shape of the curve of the foot of the sail.  Tightening or slackening the outhaul can flatten or fill out the sail, shift the draft forward or aft, change leech and foot tension, and increase or decrease camber.