Rating Rules

IRC

IRC is a rating system based on a time-on-time calculation (TCC) of a boat’s elapsed time. It is a simplified rule and works on the basic principle that the faster the boat, the higher the TCC. IRC is considered a “secret” rule, the intention of which is to prevent the development of design-optimised boats that can take advantage of their rating.

Further information and full explanation of the rule can be found in the the IRC Yearbook or from the IRC website: http://www.ircrating.org/