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 Case Book details interpretations of The Racing Rules of Sailing. It has been published by the International Sailing Federation for over 40 years. The Case Book complements The Racing Rules of Sailing (RRS), providing details on the application of the RRS to around 100 scenarios. The principal aims of the Cases are to clarify an important meaning in a rule or to increase the understanding of a complex rule.

The Racing Rules of Sailing 2013-2016 in pdf format.