S.C. Code Ann. § 50-21-870
(A) As used in this section:
(1)
(a) "Personal watercraft" means a boat less than sixteen feet in length which:
(B) No person may:
(1)
(b) operate, be in possession of, or give permission to operate a Class "A" motor boat while upon the waters of this State unless each person under the age of twelve aboard the Class "A" motor boat is wearing a United States Coast Guard approved personal flotation device, Type I, Type II, Type III, or Type V;
Each personal flotation device must be fastened properly, in good and serviceable condition, and the proper size for the person wearing it;
(9)
(a) operate a personal watercraft, specialty propcraft, or vessel if he is younger than sixteen years of age, unless accompanied by an adult, eighteen years or older, who is not under the influence of alcohol, drugs, or a combination of them. However, a person younger than sixteen years of age may operate a personal watercraft, specialty propcraft, or vessel without being accompanied by an adult if one or more of the following applies:
(E) This section does not apply to:
(1) the operation of personal watercraft, specialty propcraft, or vessels by the following personnel while in the performance of their official duties: