SECURITY FOR AND PAYMENT OF OBLIGATIONS PAYABLE FROM REVENUE.

(a) Revenue obligations issued under this chapter may be secured solely by and paid from a pledge of the net revenue derived from the operation of island property, including revenue from leases, subleases, sales, or contracts for sale entered into by the municipality or the board of trustees with respect to the island property. For purposes of this subsection, the net revenue is an amount equal to the gross revenue derived from the operation of the island property less the reasonable expenses of maintaining and operating the island property.

(b) While the principal of or interest on obligations is outstanding, the issuer shall:

(1) impose and collect charges in an amount sufficient to pay:

(A) maintenance and operation expenses of the island property;

(B) the interest on the obligations as it accrues; and

(C) the principal of the obligations as the obligations mature; and

(2) make any other payment prescribed by the ordinance or resolution authorizing or other proceeding relating to the issuance of the obligations.

(c) In addition to the security provided by Subsection (a), obligations may be secured by a trust indenture and a mortgage or deed of trust lien or other security interest on island property.