28 Miss. Code. R. 301-16.5
Except as otherwise provided in this procedure, it shall be unlawful for any person to erect, construct, enlarge, move or convert any sign on the Port of Gulfport or cause the same to be done, without first obtaining a sign permit for each such sign from the Port Authority as required by this procedure. These directives shall not be construed to require any permit for a change of copy on any sign, nor for the repainting, cleaning and other normal maintenance or repair of a sign or sign structure for which a permit has previously been issued, so long as the sign or sign structure is not modified in any way. No new permit is required for signs which have permits and which conform with requirements of this ordinance on the date of its adoption unless and until the sign is altered or in any manner whatsoever, except as provided herein above, or is relocated to another location at the Port.
28 Miss. Code. R. 301-16.5