Mich. Comp. Laws § 247.659d: "Port facility" definition.

Sec. 9d.

As used in this act, "port facility" means a commercial facility located alongside a navigable waterway used for commercial vessels and includes any of the following types of facilities:

(a) A seawall jetty, pier, wharf, or dock.

(b) A warehouse, storehouse, elevator, grain bin, cold storage plant, terminal icing plant, bunker, or oil tank.

(c) A ferry, canal, lock, seaway, or conveyor.

(d) A modern appliance for the economical handling, storage, or transportation of freight and handling of passenger traffic.

(e) A transfer or terminal facility required for the efficient operation or development of a port or harbor.

(f) Any other port or harbor improvement to assist with commercial operations.

(g) An improvement, enlargement, remodeling, or extension of a facility described in this section.