Michigan Compiled Laws, Chapter 500. Insurance Code of 1956 § 500.614

(1) Vessels, craft, aircraft, cars, automobiles and vehicles of every kind, as well as all goods, freights, cargoes, merchandise, effects, disbursements, profits, moneys, bullion, precious stones, securities, choses in action, evidences of debt, valuable papers, bottomry and respondentia interests, and all other kinds of property and interests therein, in respect to, appertaining to, or in connection with any and all risks or perils of navigation, transit, or transportation, including war risks, on or under any seas or other waters, on land or in the air, or while being assembled, packed, crated, baled, compressed, or similarly prepared for shipment, or while awaiting the same, or during any delays, storage, transshipment, or reshipment incident thereto, including marine builders' risks and all personal property floater risks.

(2) Person or to property in connection with or appertaining to a marine, inland marine, transit, or transportation insurance, including liability for loss of or damage to either, arising out of or in connection with the construction, repair, operation, maintenance, or use of the subject matter of such insurance (but not including life insurance or surety bonds), but shall not mean insurances against loss by reason of bodily injury to the person arising out of the maintenance, operation or use of motor vehicles.

(3) Precious stones, jewels, jewelry, gold, silver, and other precious metals whether used in business or trade or otherwise and whether the same be in course of transportation or otherwise, which shall include jeweler's block insurance.

(4) Bridges, tunnels, and other instrumentalities of transportation and communication (excluding buildings, their furniture and furnishing, fixed contents, and supplies held in storage) unless fire, tornado, sprinkler leakage, hail, explosion, earthquake, riot and/or civil commotion are the only hazards to be covered. Piers, wharves, docks and slips, excluding the risks of fire, tornado, sprinkler leakage, hail, explosion, earthquake, riot and/or civil commotion. Other aids to navigation and transportation, including dry dock and marine railways, against all risks.