625 ILCS 45/3-13
Any watercraft manufactured after the effective date of this amendatory Act shall have a hull identification number carved, burned, stamped, embossed, or otherwise permanently affixed to the outboard side of the transom or, if there is no transom, to the outermost starboard side at the end of the hull that bears the rudder or other steering mechanism, above the water line in such a way that alteration, removal, or replacement would be obvious and evident. Any individual who manufactures any watercraft, either for private or public use, shall apply to the Department of Natural Resources for issuance of a Hull Identification Number and shall affix such number to watercraft as required by the rules and regulations of the Department.
625 ILCS 45/3-13