Ohio Revised Code Title XV. Conservation of Natural Resources § 1547.06

(A) Except as otherwise provided in this division, no person under sixteen years of age shall operate a personal watercraft on the waters in this state. A person who is not less than twelve, nor more than fifteen years of age may operate a personal watercraft if a supervising person eighteen years of age or older is aboard the personal watercraft and, in the case of a supervising person born on or after January 1, 1982, if the supervising person holds a certificate obtained under section 1547.05 of the Revised Code or, in the case of a rented powercraft, meets the requirements of section 1547.052 of the Revised Code.

(B) No person under twelve years of age shall operate any vessel on the waters in this state unless the person is under the direct visual and audible supervision, during the operation, of a person who is eighteen years of age or older. This division does not apply to a personal watercraft, which shall be governed by division (A) of this section, or to a powercraft, other than a personal watercraft, powered by more than ten horsepower, which shall be governed by division (C) of this section.

(C) No person under twelve years of age shall operate on the waters in this state a powercraft, other than a personal watercraft, powered by more than ten horsepower unless the person is under the direct visual and audible supervision, during the operation, of a person eighteen years of age or older who is aboard the powercraft and, in the case of such a supervising person born on or after January 1, 1982, who holds a certificate obtained under section 1547.05 of the Revised Code or, in the case of a rented powercraft, meets the requirements of section 1547.052 of the Revised Code.

(D) No supervising person eighteen years of age or older shall permit any person who is under the supervising person's supervision and who is operating a vessel on the waters in this state to violate any section of this chapter or a rule.