Fixed daymarks on the sides of channels usually feature what markings?

Fixed daymarks that are placed on the sides of channels typically feature even numbers, which serve an important navigational function. The system of numbering aids boaters in identifying their location within the channel, especially when approaching from the sea or moving up the river. Even-numbered daymarks are generally located on the right side of the channel when heading upstream.

This systematic approach allows for consistency and helps to avoid confusion during navigation. The use of even numbers aligns with established maritime conventions, further simplifying the navigation process by providing clear visual cues that assist in maintaining proper channel orientation.

In contrast, odd-numbered markers would be found on the opposite side of the channel, helping to create a customized framework for boat operators to understand their position and routing. Lettered markers and unmarked daymarks do not provide the same level of specificity or navigational clarity as numerical markings, making the use of even numbers particularly significant for mariners.