There is hereby appropriated for the payment of the principal of and interest on any bonds issued hereunder, or under the 1957 Docks Act, the 1959 Docks Act, the 1961 Docks Act, the 1963 Docks Act, or the 1967 Docks Act, so much as may be necessary for that purpose of any moneys in the general fund of the state not otherwise appropriated.
Ala. Code § 33-2-159 (1975)