In this section the following words have the meanings indicated. “Child” means an individual who is under the age of 13 years. “Personal flotation device” means a flotation device that is approved by the U.S. Coast Guard. “Vessel” means: A vessel used for recreational purposes; or A vessel leased, rented, or chartered for noncommercial use. “Vessel” does not include a vessel carrying passengers for hire under the command of an individual licensed by the U.S. Coast Guard to carry passengers for hire, or a vessel displaying a valid seafood harvester’s license number while engaged in the harvesting of seafood for sale. A person may not operate or allow the operation of a vessel under 21 feet in length if there is a child present in the vessel unless the child is wearing a personal flotation device that is: Properly sized for the child; In good and serviceable condition; and Securely and properly attached to the child. If the child is under the age of 4 years, the personal flotation device shall feature additional safety precautions, as appropriate for an infant, toddler, or young child, so as to: Hold the child securely within the personal flotation device, including a strap that is secured between the child’s legs to fasten together the front and back of the personal flotation device; Maintain the buoyancy of the child, including an inflatable headrest or high collar; and Ensure the ready accessibility of the child from the vessel, including a web handle. Subsection (b) does not apply to: A vessel that is moored or anchored; or A child who is below deck or in an enclosed cabin.