Michigan Compiled Laws, Chapter 324. Natural Resources and Environmental Protection § 324.80142

Sec. 80142. (1) Except as provided in subsection (3), a person shall not operate a vessel on the waters of this state unless each person in an open deck area on board the vessel who is less than 6 years of age is wearing a type I or type II personal flotation device as described in R 281.1234 of the Michigan administrative code.

(2) A parent or guardian of a child less than 6 years of age who accompanies that child on board a vessel that is not a charter boat described in subsection (3) shall ensure that the child is wearing a personal flotation device that complies with this section.

(3) This section does not apply to a charter boat bearing either of the following:

(4) As used in this section, “charter boat” and “class C vessel” mean those terms as defined in section 44501.  1

(5) A person who violates this section is responsible for a state civil infraction and may be ordered to pay a civil fine of not more than $100.00.