World Leader in Rating Technology OFFSHORE RACING CONGRESS ORC Rating Systems 2017 ORC International & ORC Club Copyright © 2017 Offshore Racing Congress. All rights reserved. Reproduction in whole or in part is only with the permission of the Offshore Racing Congress. Cover picture: ORC European Championship, Porto Carras, Greece 2016 by courtesy Fabio Taccola Margin bars denote rule changes from 2016 version Deleted rule from 2016 version: 205.3, 403.4 O R C World leader in Rating Technology ORC RATING SYSTEMS International ORC Club 2017 Offshore Racing Congress, Ltd. www.orc.org
[email protected] CONTENTS Introduction ....................................................... 4 1. LIMITS AND DEFAULTS 100 General ……………………….......................... 6 101 Materials …….................................................... 7 102 Crew Weight ...................................................... 7 103 Hull ….……....................................................... 7 104 Appendages …………....................................... 8 105 Propeller ……………........................................ 8 106 Stability ……..................................................... 8 107 Righting Moment …………………………….. 8 108 Rig …………………………………………… 10 109 Mainsail …………………………….…...….... 10 110 Mizzen ………………………...………...…... 11 111 Headsail ………………………..…………..… 11 112 Mizzen Staysail ……………………...………. 12 113 Symmetric Spinnaker ………………………... 12 G SYSTEMS 114 Asymmetric Spinnaker ………………...……. 12 2. RULES APPLYING WHILE RACING 200 Crew weight …………………………………. 14 RATIN ORC 201 Ballast, Fixtures