The Chief of Police shall be ex-officio harbor master and shall have general control and supervision of the public landings and shall preserve order at all times in and about the same and he or she is hereby given the power to deputize any regularly appointed police officer to perform any and all duties dedicated to the harbor master. The authority of the harbor master shall extend over all the land set apart for public landings and over that portion of the Mississippi River to the middle of the main channel thereof, situated immediately westerly of all lands owned by the city.
(1980 Code, § 13.502)