The new material buoys use linear low-density polyethylene or high molecular weight polyethylene as raw materials. On one hand, they can be applied for comparison to find the most suitable material and structure for our jurisdiction. On the other hand, these materials have stable performance, do not decompose in water, and pollute the aquatic environment. Additionally, the color of the buoys is the inherent color of the raw material, eliminating the need for sandblasting and painting, thus avoiding the pollution associated with painting.

By appropriately distributing river navigation buoys, directions, boundaries, and navigational hazards of river channels can be marked, relevant channel information revealed, and an economically efficient航道 for vessels indicated. River navigation buoys are categorized into three types: guidance for navigation, hazard indication, and signaling. The shapes, colors, and light characteristics of the buoys are uniformly specified according to the adjacent shore (or background conditions).

White signifies representation, protection, and guidance, making white caution buoys commonly placed in harbors, docks, and other areas available for docking. The white buoys provide a stopping point for vessels, marking the area accessible through the pole.

That concludes the classification of colors for marine warning buoys. By understanding the meanings of these colors, vessels can determine how to navigate based on different hues, ensuring safe sea travel.