The Equipment Rules of Sailing (ERS) govern the equipment used in the sport. They are revised and published every four years by the International Sailing Federation.
The Equipment Rules of Sailing consists of three parts:
- Part I - Rules for use of the equipment: The boat - the sports equipment used in sail racing and the personal equipment
- Part II - Equipment definitions
- Part III - Rules governing equipment control and inspection
The current edition is the ISAF Equipment Rules of Sailing 2013-2016 effective from 1 January 2013 until 31 December 2016.
Printed copies can be purchased from the ISAF Secretariat using the Publication Order Form.