Iowa Code § 462A.10: Boat liveries.

1. The owner of a boat livery shall cause to be kept a record of the name and address of the person or persons hiring any vessel which is designed or permitted by the owner to be operated for hire, the identification number thereof, the departure date and time and the expected time of return. The records shall be preserved for six months.

2. The owner of a boat livery shall not permit any of the owner’s vessels, operated for hire, to depart from the owner’s premises unless it shall have been provided, either by the owner or renter, with the equipment required by the commission.