(a) Notwithstanding any law or charter provision to the contrary, the governing body of a municipality may impose a tax at a rate not to exceed 10 cents on each $100 of assessed valuation of property for the maintenance and operation of a port or harbor of the municipality.
(b) The tax may be imposed only if it has been approved by a majority of the qualified voters voting at an election held for that purpose.
(c) Section 41.001(a), Election Code, does not apply to the election.