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Boat Oklahoma: Official Oklahoma boating safety course Oklahoma Highway Patrol logo

Chapter 4: The Legal Requirements of Boating
Other Equipment and Regulations

Diver-Down Flags

Scuba divers or snorkelers must display a diver-down flag that marks their diving area. Vessels must remain at least 150 feet away from the flag unless the vessel is engaged in the rescue of a person in that area. Two types of flags are used to indicate diving activity.

Illustration Types of Flags
Divers Flag Diver Down Flag:
  • A rectangular red flag no less than 20 x 24 inches with a 4-inch white diagonal stripe is used if on Oklahoma state waters.
Alfa Flag Alfa Flag:
  • A blue and white International Code Flag A (or Alfa flag) is used if on state, federally-controlled, or international waters. This flag indicates that a vessel is involved in a diving activity.

Scuba divers and snorkelers should not place a flag in an area already occupied by other boaters or where their diving operation will impede the normal flow of waterway traffic. Divers also should follow all of the water safety rules themselves.

Inner Tubes, Floating Chairs, or Similar Devices

These items must not be more than 50 feet from shore when being used by a swimmer. You should avoid swimming and playing in areas of high boating traffic such as boat ramps and marinas.

Races, Regattas, and Tournaments

If an event is planned on Oklahoma state waters, you must contact, in advance of the event, the agency which has jurisdiction over the waters— the United States Army Corps of Engineers, the Oklahoma Department of Tourism and Information, or the Grand River Dam Authority. If an event is being held on federally controlled waters, you must apply for a permit from the U.S. Coast Guard at least 30 days prior to the event.

Local Regulations

Many Oklahoma waterways may have specific equipment and operational requirements in addition to those covered in this chapter. For example, the Grand River Dam Authority places additional lake rules and regulations on those boating on the Grand Lake of the Cherokees, Lake Hudson, and W. R. Holway Reservoir. Find out what the local regulations are before you go boating.

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