A district shall have power from time to time to issue bond anticipation revenue notes (herein referred to as notes), and from time to time to issue renewal notes, such notes in any case to mature not later than six years from the date of incurring the indebtedness represented thereby in an amount not exceeding in the aggregate at any time outstanding the amount of revenue bonds then or theretofore authorized but not issued. Payment of such notes shall be made from any moneys or revenue which the district may have available for such purpose or the proceeds of the sale of revenue bonds of the district, or such notes may be exchanged for a like amount of such revenue bonds bearing the same or a lower or higher rate of interest than that borne by such notes.
All notes may be issued and sold in the same manner as revenue bonds. Any district shall have power to make contracts for the future sale from time to time of notes on terms and conditions stated in such contracts, and the district shall have power to pay such consideration as it shall deem proper for any commitments to purchase notes in the future. Such notes may also be collaterally secured by pledges and deposits with a bank or trust company, in trust for the payment of said notes, of revenue bonds in an aggregate amount at least equal to the amount of such notes and, in any event, in amount deemed by the district sufficient to provide for the payment of the notes in full at the maturity thereof. The district may provide in such collateral agreement that the notes may be exchanged for revenue bonds held as collateral security for the notes, or that the trustee may sell the revenue bonds if the notes are not otherwise paid at maturity and apply the proceeds of such sale to the payment of the notes. Such notes shall bear interest at a rate or rates as authorized by the port commission.