A 3-meter steel navigation buoy is a device used to mark channel boundaries, shoals, navigational obstacles, or hazardous areas. It is typically made of steel plates or fiberglass, with one end anchored to the seabed and the main body floating on the water surface. Its shape (such as cylindrical, conical, spherical, columnar, or rod-shaped), color, top mark, and light characteristics are all manufactured in accordance with specified standards and carry specific meanings. Due to the influence of wind, waves, and tides, the buoy body has a certain range of buoyancy movement and cannot be used as a marker for determining a vessel's position. The function of the 3-meter steel navigation buoy is to mark shoals or obstacles that pose a threat to navigation safety within a navigation channel.
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