Miss. Code Ann. § 59-5-29

Whenever any bonds of the State of Mississippi have been issued as provided in Sections 59-5-23 and 59-5-25, and where the authorized port or harbor agency is a county port authority organized as provided by Sections 59-9-1 through 59-9-85, the membership of such county port authority shall be increased by two members, to be appointed by the governor who shall be qualified electors of the county, and whose term shall be concurrent with that of the appointing governor. One such member shall be appointed by the governor from the county at large, and the other such member shall be appointed from a municipality located on the navigable channel or waterway on which the port facilities are located, but which municipality shall not be the county seat of such county. The two additional members hereby authorized to be appointed to such county port authority shall be vested with all the rights and duties and powers as members thereof, but such appointments shall be made to such county port authority and shall continue only so long as any such state bonds shall be outstanding and unpaid. The members of such county port authority appointed by the governor under the authority of this section shall make bond and qualify as members of such port authority in the same manner provided by law for the other members of such county port authority, and as provided in this chapter.