THE INTERNATIONAL 2.4MR CLASS ASSOCIATION (ICA) The purpose of the ICA is: 1/ To promote interest in the International 2.4mR Class worldwide, 2/ To coordinate and handle the business and rules of the International 2.4mR Class in cooperation with World Sailing and National Authorities, 3/ To promote good competition and fair play in the International 2.4mR Class, and 4/ According to separate statutes to administer the 2.4 Norlin One Design Class. Click here to open the 2.4 mR International Class Association Website