World Leader in Rating Technology OFFSHORE RACING CONGRESS ORC RATING SYSTEMS RATING ORC ORC Rating Systems 2020 ORC International & ORC Club 3 Copyright © 2020 Offshore Racing Congress. All rights reserved. Reproduction in whole or in part is only with the permission of the Offshore Racing Congress. Cover picture: Offshore World Championship, Šibenik, Croatia 2019 Courtesy Nikos Alevromytis powered by VMG Factory Margin bars denote rule changes from 2019 version. Deleted rules from 2019 version: 208.3, 208.4, 208.6 World leader in Rating Technology ORC RATING SYSTEMS SYSTEMS RATING ORC International ORC Club 2020 Offshore Racing Congress, Ltd. www.orc.org
[email protected] 1 CONTENTS Introduction ....................................................... 3 1. LIMITS AND DEFAULTS 100 General ……………………….......................... 5 101 Materials …….................................................... 6 102 Crew Weight ...................................................... 6 103 Hull ….……....................................................... 6 104 Appendages …………....................................... 7 105 Propeller ……………........................................ 7 106 Stability ……..................................................... 7 107 Righting Moment …………………………….. 8 108 Rig ……………………………………………. 9 109 Mainsail …………………………….………... 10 110 Mizzen ………………………...………...…... 10 111 Headsail ………………………..…………..… 11 112 Mizzen Staysail ……………………...………. 11 113 Symmetric Spinnaker ………………………... 12 114 Asymmetric Spinnaker ………………...……. 12 115 No Spinnaker Configuration