625 ILCS 45/7-7

The Department shall furnish to the licensee an appropriate license which shall be prominently displayed in his place of business, or upon the boat if only one boat is involved. In addition to said license the Department shall also furnish to such licensee a durable tag or disc for each boat so licensed with such markings as the Department shall deem necessary, which tag or disc must be affixed to some prominent place at the bow of said boat plainly visible to the public. The licensee shall also cause to be painted on the after quarter of the boat the number of pounds of weight authorized to be carried therein, and no licensee or his agent shall knowingly permit more than that number of pounds of weight or number of persons to occupy said boat at any one given time.