Ind. Code § 8-10-1-19
Any holder of bonds issued under the provisions of this chapter or any of the coupons appertaining thereto, and the trustee under any trust agreement, except to the extent the rights given in this chapter may be restricted by the authorizing resolution or trust agreement, may, either at law or in equity, by suit, action, mandamus, or other proceedings, protect and enforce any and all rights under the statutes of the state or granted under this chapter or under such trust agreement, or the resolution authorizing the issuance of such bonds, and may enforce and compel the performance of all duties required by this chapter or by such trust agreement or resolution to be performed by the ports of Indiana or by any officer thereof, including the fixing, charging, and collecting of fees, tolls, rentals, or other charges for the use of the port or project.
IC 8-10-1-19