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Boating Basics: On the Water

Non-Lateral Markers

Non-lateral markers are navigation aids that give information other than the edges of safe water areas. The most common are regulatory markers that are white and use orange markings and black lettering. These markers are found on lakes and rivers.

Illustrations What the Non-Lateral Markers Indicate
Information marker: White buoy with directions inside an orange square
Information
Squares indicate where to find food, supplies, repairs, etc. and give directions and other information.
Controlled area marker: White buoy with speed limit inside an orange circle
Controlled
Circles indicate a controlled area such as speed limit, no fishing or anchoring, ski only or no skiing, or "slow, no wake."
Exclusion marker: White buoy with orange crossed diamond and labeled Swim Area underneath
Exclusion
Crossed diamonds indicate areas off-limits to all vessels such as swimming areas, dams, and spillways.
Danger marker: White buoy with an orange diamond that warns of danger
Danger
Diamonds warn of dangers such as rocks, shoals, construction, dams, or stumps. Always proceed with caution.

Other Non-Lateral Markers

Safe Water Markers: Red and white vertically striped buoys

Safe Water Markers are white with red vertical stripes and mark mid-channels or fairways. They may be passed on either side.

Inland waters Obstruction Markers: Buoy with black and white vertical stripes

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.

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.

Mooring Buoys: White buoys with blue horizontal stripes

Floating Fish Traps

  • Commercial fishermen employ floating fish traps in New England waters. Floating fish traps are a maze of vertical nets that are anchored to the water bottom and stretched to the water's surface by attached floats. These traps can be dangerous to recreational boaters.
  • Boaters should learn to recognize and avoid fish traps.
    • Look for a network of floating barrels, buoys, or floats.
    • Do not pass between the buoys.
    • Give wide berth to nets in order to avoid their long anchor lines.
  • Check your nautical charts for areas where fish traps may be located.

Diagram of fish trap

These traps can also be anchored off shore as well as secured to the shore.

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