(2) Except as otherwise provided by this section, in order to be effective, all ordinances require the affirmative vote of a majority of the commissioners of the port at a meeting of the board duly and regularly held.

(3) Ordinances making appropriations, the annual tax levy and emergency ordinances take effect immediately upon passage. All other ordinances are subject to the referendum and shall become effective 30 days after enacted, unless a later date is fixed therein, in which event they shall take effect at a later date, subject to the referendum. Except for ordinances making appropriations and the annual tax levy, when an ordinance is enacted, a notice containing a concise summary of the ordinance and the location within the port where a copy of the complete ordinance may be obtained without charge shall, within five days after passage of the ordinance, be published at least once in a newspaper of general circulation within the port.

(4) Ordinances making appropriations and the annual tax levy and emergency ordinances shall be passed by an aye and nay vote. Emergency ordinances shall contain the statement that an emergency exists and specify with distinctness the facts and reasons constituting the emergency. The unanimous vote of all the commissioners present, and of not less than seven commissioners, is required to pass an emergency ordinance.

(5) In case a referendum petition is filed against an ordinance or part thereof, the operation of the ordinance or part thereof shall be suspended pending the outcome of the referendum election. [Amended by 1971 c.170 §1; 1971 c.728 §134]