Non Lateral Markers

The Uniform State Waterways Marking System (USWMS) uses regulatory markers and aids to navigation mostly on lakes and other inland waterways, but may also be used on federal waters. The regulatory markers designate:

^ Boat exclusion areas: A diamond shape with a centered cross designates areas that boats must stay away from, such as swim areas, dams, or rapids. Wording may be placed outside the crossed diamond shape.

^ Danger: An open-faced diamond identifies the nature of the danger, such as rock, wreck, or shoal (shallow area). Wording may be posted inside the diamond shape.

^ Controlled area: A circular shape designates a controlled area, and wording may identify the type of control, such as "5 mph," "no wake," or "anchoring." The warning may be placed inside the circle.

^ Information: A square or a rectangle displays official information, such as directions and locations.

^ A white mooring buoy with a blue band. The buoy may show a white reflector or light, and is for mooring only.

^ Inland waters obstruction mark: A white buoy with black vertical stripes indicates an obstruction to navigation. To avoid the obstruction, do not pass between the buoy and the shore.

^ Buoys can be used to display regulatory markers. They may show a white light and may be lettered.

REMEMBER

Navigational aids contain information and are regulatory markers used to alert the boater.

Non-Lateral Markers

Boats Keep Out!

Danger!

Controlled Area

Information

Mooring Buoy

Inland Waters Obstruction Mark

Boats Keep Out!

Danger!

Controlled Area

Information

Mooring Buoy

Inland Waters Obstruction Mark

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