Whenever any port district shall determine to acquire or construct any one or more projects authorized under the provisions of this chapter, the commission of such district shall have the power and is authorized to issue negotiable revenue bonds and notes from time to time in one or more series or installments in such principal amount as, in the opinion of the commission, shall be necessary to provide sufficient money for the acquisition, construction, reconstruction, extension or improvement thereof as set forth in RCW 53.34.010
, including engineering, inspection, legal and financial fees and costs, working capital, interest on such bonds and notes during construction and for a reasonable period thereafter, establishment of reserves to secure such bonds and notes and all other expenditures of such district incidental, necessary or convenient to the establishment of such projects on a sound financial basis, and to issue negotiable revenue bonds and notes for the purpose of renewing or refunding such outstanding bonds and notes in whole or in part at or prior to maturity. All such revenue bonds or notes shall be negotiable instruments within the meaning and purposes of the negotiable instruments law and shall be sold by the commission in such manner and for such price as the commission deems for the best interests of the district: PROVIDED, That the bonds and warrants may be in any form, including bearer bonds or bearer notes, or registered bonds or registered notes as provided in RCW 39.46.030
. The commission may provide in any contract for the construction or acquisition of all or any part of a project or projects or for the additions or betterments thereto or extensions or improvements thereof that payment therefor shall be made only in such revenue bonds or notes. Any revenue bonds issued under the authority of chapter 236, Laws of 1959 shall have a final maturity not to exceed forty years from date of issue.