maintenance and development of the VPP and other software, are encompassed by the "International Technical Committee" (ITC), chaired by Andy Claughton. A number of working groups also exist. Measurers and Rating Offices The 'Central Rating Office' establishes delegated Rating Offices in each country with active offshore racing. Rating offices issue ORC International and ORC Club certificates and administer their national fleets by supervising the measurement and rating of the yachts. For countries, where a national Rating Office is not established, the central ORC Rating office may provide support in issuing certificates and supervising measurement. A 'Chief Measurer' chairs the Measurement Committee. The current Chief Measurer is Zoran Grubiša. National Chief Measurers are established in each national Rating Office. Events The ORC organizes multiple events, and the major ones can be grouped as follows: World Championships ORC World Championship ORC DH World Championship Continental Championships National Championships International Events See also International Rule Sailing Stability conditions (watercraft) Hydrostatics References Sources IMS 2022 ORC Rating System ORC Sportboat Class Rule ORC Superyacht Rule Green Book External links http://www.orc.org/ ORC Official website. https://www.instagram.com/orcsailing/ ORC Official Instagram account Yachting associations International sports organizations Sailing governing bodies