Mich. Comp. Laws § 109.12: Harbor fire ordinances.

Sec. 12.

The council of any city located upon any of the navigable waters of the state may, by ordinance, prescribe such regulations to be observed by owners, masters and employes of steamboats and water craft as may be necessary for the prevention of fires in the harbor, and to prevent the communication of fire from such boats and craft; and may prescribe in such ordinances the manner of collecting any penalties imposed thereby.