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One-Design Class Sailboat Handbook 



In some areas, the racing fleets operate under restricted handicap 

 classes such as Class A for all boats over 30 feet racing length, Class B 

 for boats between 25 and 30 feet racing length and Class C for craft 

 between 20 and 25 feet racing length. 



International Racing Classes 



The meter classes and some one-design classes are built to the rules 

 of the International Yacht Racing Union. This is the world authority 

 controlling yacht racing, and the classes which it administers are known 

 as International classes. The following are the classes recognized by the 

 I.Y.R.U. 



*These classes are classified by their sail area. The Tumlaren Class 



(The International Tumlaren Yacht Association) is a popular class based 



on the sail area in the United States. In the United States it is considered 



a member of the 20 square meter group whereas those racing in Canadian 



waters are considered 25 meter class. 



Every boat of an international class recognized by the I.Y.R.U. shall 

 carry on its mainsail: 



a. When racing in foreign waters a letter or letters showing its na- 

 tionality, thus: 



A Argentine 



AR United Arab Republic 



B Belgium 



BA Bahamas 



BL Brazil 



J Japan 



PZ Poland 



RC Cuba 



RI Indonesia 



RM Rumania 



