Measurement Drawings Definitions including measurement drawings of: Overhangs, drop keels & centreboards, rig and sails, fin keels (PDF) 2012 Guidance on measuring x & h (and when it is required) updated Jan 2018 Beam (PDF) Draft (PDF) Keel types Simplified measurement guides - sails and rig Single furling headsail allowance - an explanation of the overlap limit
