For the purpose of financing the improvement, development, protection and maintenance of such additional harbor or harbors, the board may issue bonds, borrow money, incur indebtedness and levy taxes, all in the same manner and to the same extent as in the improvement, development, protection and maintenance of the harbor for which the district was originally formed, and shall in all other respects have the same powers and duties with respect to the improvement, development, protection and maintenance of such additional harbor or harbors as it has with respect to the original harbor for which the district was formed.

The board may issue no bonds hereunder unless the incurring of the bonded indebtedness for the improvement, development, protection and maintenance of such additional harbor or harbors shall first have been approved at an election held in the manner provided in Article 3, Chapter 1, Part 2 of Division 8 of this code, and pursuant to the provisions of said article with reference to the incurring of bonded indebtedness.