What is the general rule of thumb for marking lateral buoys in open water?

The general rule of thumb for marking lateral buoys in open water is that they should indicate red to the right when returning from sea, particularly in IALA Region B. This principle is part of the IALA Maritime Buoyage System, which is designed to provide consistent guidance for mariners navigating coastal and inland waters.

In IALA Region B, which includes the Americas and some parts of Asia, red buoys represent the starboard side of a vessel when approaching from the sea. This means that when a vessel is returning to port, the red buoys should be kept on the right side, providing a visual cue that helps ensure safe navigation and reduces the risk of running aground or colliding with hazards.

This system allows for intuitive navigation, as mariners can rely on the color-coded buoys to help them understand their position in relation to the shore and any potential obstacles. Consequently, the adherence to this color coding is crucial for maintaining safe passage in maritime navigation.