The ILCA 4 class uses the 230mm numbers, and the ILCA 6 and ILCA 7 use the 300mm numbers. All numbers are available.
Instructions for applying sail numbers can be found here.
Sail numbers are required by ILCA class rules to compete in all major class events. For international events, country code stickers are also required.
Upon checkout, please note your sail numbers in the correct order.