S.C. Code Ann. § 50-5-970

It is unlawful to take or attempt to take shellfish from any bottoms or waters of this State for any purpose by mechanically operated devices, including dredges, hydraulic escalators, patent tongs, hoists, cranes, and mechanical shellfish harvesters without obtaining a mechanical harvest permit from the department. A person taking or attempting to take shellfish by mechanically operated devices without an appropriate, valid mechanical harvesting permit is guilty of a misdemeanor and, upon conviction, must be fined not less than one thousand dollars nor more than two thousand five hundred dollars or imprisoned for not more than thirty days and must have his saltwater privileges suspended for twelve months. Any commercial equipment or vessel used in violating this section and any shellfish in possession at the time of a violation is contraband.