S.C. Code Ann. § 54-15-310
The boards of commissioners of pilotage may, for any cause or charge to them satisfactorily proven, order and direct any pilot for the port to which they belong to deliver up his license or licenses and to take out a new license or licenses. But no pilot who shall satisfy them of the groundlessness of such cause or the falsity of such charge brought against him shall be required to pay an additional fee for his new license.