Official website of the irish international one metre national class association. you will find all the information about this hobby : boats, skippers, technics. Radio sailing shop : building an iom – sailsetc drawings rig kits & rig plans boom kits masts alum & carbon fibre boom sections goosenecks – vangs mast, boom. – international one meter (iom): this is the international class with the fastest-growing fleet in the world. the international class association estimates.