International Class
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The designation International Class may be granted by the International Sailing Federation (ISAF) to classes of sail boat that offer a high standard of international competitive sailing and satisfy a number of criteria regarding the number of boats of that class, their international distribution, and the rules, administration and operation of that class's Class Association.
The designation Recognized Class may be granted to a class of sail boat that does not yet fulfil all the requirements for designation as an International Class.
Classes used in Olympic sailing competition are normally selected from amongst the International Classes.