OHIO REVISED CODE 1547.01 (22)
under Definitions. "Divers Flag" means a red flag not less than one foot square having a diagonal white stripe extending from the masthead to the opposite lower corner that when displayed indicates that divers are in the water.
1547.08 (D) under Operations in certain areas prohibited; no wake areas; marking by buoys or signs. No person shall operate a vessel within three hundred feet of an official diver's flag unless he is tendering the dive operation.
For additional information regarding Ohio's Dive Flag Laws, please visit the Ohio Department of Natural Resources, Division of Watercraft at :
or the Ohio Council of Skin and Scuba Divers Website at:
The International Dive Flag (Alpha Flag) Scuba divers engaged in diving activities may also fly the international Alpha Flag in addition to the red/white diver down flag required by Ohio law.