(a) is licensed by the United States Coast Guard pursuant to 46 CFR Part 10;
(b) is a person who operates a vessel under supervision of a certified instructor, or supervision of a person who is exempt from section 323 or who holds an identification in compliance with section 322, is 18 years of age or older, and is attendant to the operation of the vessel and is responsible for any violation that occurs during the operation;
(c) is a nonresident who has in his possession proof that he has completed a boating safety course or equivalency examination in a state which meets or exceeds the requirements of section 322; or
(d) is exempted by rule of the Commissioner.