A common notation based on color is red and green notation

In this category, the red buoy gives the command to turn to the right, when entering from the open waters towards the channels

The green marker buoy also gives exact photo command (turning to the left when entering the channels from open water)

The reverse of this issue is also true, so that the red marker buoy commands a turn to the left when entering open waters from channels, and the green type also commands a turn to the right

As mentioned, there is a special numbering for the polyethylene marking buoy. Accordingly, the red type has even numbers and the green type has odd numbers

In addition to the red and green colors, there is another type of color scheme that indicates the middle of the channel for the continued movement of marine transport vehicles. These objects are painted in stripes with white and red combined colors

In addition to the mentioned cases, letters also play a decisive role in marking water areas. In fact, there are a series of standard writings and signs that are written on the marker buoy. These signs have warning and monitoring features

The color of most of these markers is white with orange borders. The writings on them are also in black.

Most of these markings are used to mark speed zones, prohibited zones and dangerous zones

Marker buoys in red and green colors are usually used in pairs and in channels

As mentioned, the red and green marker buoys have a series of numbers on their bodies. The red type is marked with even numbers and the green type is marked with odd numbers and they are increasing when entering the channels from open water

There is another type of marking using red and green colors. Accordingly, if the red color is above the green color, that is, you should lean to the right when entering the channels from open water. If the green color is high, it means you should lean to the left