National Letters and Championship Numbers

Administration and Sail Number (Article 3)

When sailing at international events the both National letters and Championship Numbers should be added to both sides of the sail.  Click below for instructions.

International Topper Class class rules letters and numerals - June 2018

Championship Number allocation

Championship numbers are allocated by the secretariat of the National Toper Class Associations (NTCA).  The International Committee (ITCA) has allocated ranges of number to ITCA (GBR) and ITCA (IRL).  See instructions for placement and contact.


Contact ITCA (GBR)

Contact ITCA (IRL)

Contact ITCA


Championship numbers are allocated to current members of the relevant NTCA and may be retained for the time that they remain as members.  Sailors from other countries participating in International Topper Class World or Regional Championships will be allocated temporary number for the duration of the event.