(1) A port may, without the necessity of authorization from the electors of the port, issue and sell its refunding revenue bonds for the purpose of redeeming revenue bonds which are outstanding or paying interest due thereon:

(a) At maturity pursuant to redemption provisions in the outstanding revenue bonds; or

(b) At any time before maturity if the holders of the outstanding revenue bonds consent or if the outstanding revenue bonds authorize redemption before maturity.

(2) ORS § 777.560 to 777.590 apply to bonds authorized to be issued and sold under this section. [1955 c.423 § 7; 1959 c.337 § 6; 1965 c.223 § 7; 1971 c.728 § 90]