Before revision: Publications & In addition to the IMS and ORC Rating Rules, the ORC also publishes "The ORC Championship Rules, Standard Notice of Race, Standard Sailing Instructions and ORC Classes" or 'Green Book' , the Grand Prix (GP) Class Rules for the GP 26, GP 33 and GP 42 box rule racing classes , the VPP documentation and other software and related documentation as well as a number of technical data sets including their Stability and Hydrostatics Datasheet.
After revision: ORC Publications & In addition to the IMS and ORC Rating Rules, the ORC also publishes "The ORC Championship Rules, Standard Notice of Race, Standard Sailing Instructions and ORC Classes" or 'Green Book' ORC RulesRegulations , the VPP documentation and other software and related documentation as well as a number of technical data sets including their Stability and Hydrostatics Datasheet.