What shape and color typically identify the west cardinal mark?

The west cardinal mark is specifically identified by its shape and color, which serves to indicate safe navigational routes around underwater hazards or obstructions relative to the direction of cardinal points. For the west cardinal mark, the correct identification includes its black color with two horizontal triangles, one on top of the other; the top triangle points up, while the bottom triangle points down.

This design is crucial for mariners as it provides clear visual cues for navigation. The solid black color signifies that the mark is a cardinal aid, and the horizontal triangles help convey the direction of safe water. A cardinal mark with this configuration signals to sailors that they should navigate to the west of the mark for safe passage.

Other options presented have identifiers that do not correspond with the established IALA system for cardinal marks, which is why they do not represent the west cardinal mark correctly. Understanding these specific identifiers is essential for safe navigation in relation to cardinal marks.