Mich. Comp. Laws § 600.1841

Sec. 1841. Civil process which may be served by law anywhere in the state may be served upon any of the waters of the Great Lakes on border waters lying within the state. Any civil process which is required to be served within any county may also be served upon any of the waters of the Great Lakes or border waters which adjoin that county and are included in an extension of the boundary lines of that county to be boundary lines of the state. In any county where the boundary lines are not capable of extension because irregular, process issued from that county may be served on the waters of the Great lakes at any point within 10 miles of the shore line of that county.