Product Introduction：

Function: To indicate the starting point or ending point of a crossing channel.

Shape: Two square top marks are mounted on the upper end of the pole, facing the upstream and downstream channels respectively. When necessary, a trapezoidal board is installed in front of the pole to increase the viewing distance, with the trapezoidal board facing the direction of the marked channel; or the square top marks are installed on the top of a triangular cone; or installed on the upper end of a tower-type structure. When a crossing mark is installed on a buoyant base, it shall be set as a buoy.

Color: Left bank — the top marks and trapezoidal board are white or black, the pole has alternating white-and-black horizontal stripes, and the tower body is white or has alternating white-and-black horizontal stripes. Right bank — the top marks and trapezoidal board are red, the pole has alternating red-and-white horizontal stripes, and the tower body is red or has alternating red-and-white horizontal stripes.

Light Characteristic: Left bank — white or green, Morse code "A" flash (·—); right bank — white or red, Morse code "N" flash (—·). Alternatively, left bank — white or green, Morse code "M" flash (———); right bank — white or red, Morse code "D" flash (—··).