Ohio Revised Code Title XV. Conservation of Natural Resources § 1547.40

(A) No person shall operate or permit to be operated on the waters in this state a watercraft to which a capacity plate is attached if the total load exceeds the weight capacity indicated on the capacity plate, if the number of persons aboard exceeds the occupant capacity indicated on the capacity plate, or if the horsepower of any attached outboard motor exceeds the maximum horsepower indicated on the capacity plate.

(B) When no capacity plate exists, no person shall operate or permit to be operated on the waters in this state a watercraft if a reasonably prudent person would believe that either of the following circumstances applies: