Mich. Comp. Laws § 324.9505: Discharge of oil prohibited; removal of oil from waters, shorelines, or beaches.

Sec. 9505.

A person shall not discharge or permit the discharge of oil from a watercraft or a docking facility into or onto the waters of this state.

The owner or operator of a watercraft who, whether directly or through any person concerned in the operation, navigation, or management of the watercraft, discharges, permits, or causes or contributes to the discharge of oil into or onto the waters of this state or adjoining shorelines or beaches shall immediately remove the oil from the waters, shorelines, or beaches. If the state removes the oil that was discharged from the watercraft, the owner or operator, or both, are liable to the state for the full amount of the costs reasonably incurred for its removal. The state may bring action against the owner or operator, or both, to recover such costs in any court of competent jurisdiction.