Non-lateral markers are navigational aids that give information and regulations. The most common are regulatory markers. These markers are white with orange stripes on the top and bottom and have a geometric shape between the stripes. The shapes indicate the purpose of the markers as shown below.
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What the Non-Lateral Markers Indicate |
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Information
Squares indicate where to find food, supplies, repairs, etc. and give directions and other information. |
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Controlled
Circles indicate a controlled area such as speed limit, no fishing or anchoring, ski only or no skiing, or "slow, no wake." |
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Exclusion
Crossed diamonds indicate areas off-limits to all vessels such as swimming areas, dams, and spillways. |
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Danger
Diamonds warn of dangers such as rocks, shoals, construction, dams, or stumps. Always proceed with caution. |
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Safe Water Markers are white with red vertical stripes and mark mid-channels or fairways. They may be passed on either side. |
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Inland Waters Obstruction Markers are white with black vertical stripes and indicate an obstruction to navigation. You should not pass between these buoys and the nearest shore. |

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Mooring Buoy
Mooring buoys are white with a blue horizontal band and are found in marinas and other areas where vessels are allowed to anchor.
- Willfully damaging, removing, interfering with, or tying up to a navigation buoy not intended for mooring is illegal.
- Mooring, anchoring, or fastening to shore for more than 14 consecutive days any vessel on public waters is illegal unless:
- The vessel is moved 25 nautical miles or more from its previous location or ...
- The vessel is in a special anchorage area, is authorized for private dock or moorage, or is authorized by the government agency or private interest with jurisdiction over the waters.
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