S.C. Code Ann. § 54-15-50

The South Carolina Commissioners of Pilotage for the Upper Coastal Area and surrounding jurisdiction shall organize a board of examination to consist of three nautical men, at least one of whom shall be a full branch pilot of the port to which they belong. Each such board shall examine all applicants as to their competency to work or manage vessels and, generally, to discharge the duties of a pilot. No license or branch shall be granted to any person unless he receives a certificate of competency signed by a majority of such examining board.