How many flashes does the light rhythm of a West Cardinal Mark have?

The light rhythm of a West Cardinal Mark consists of a specific flashing pattern that is designed to give mariners clear navigational information. The correct response indicates that a West Cardinal Mark emits nine quick flashes, followed by a period of darkness, typically occurring every 10 seconds.

This pattern of nine quick flashes (VQ(9)) serves to clearly differentiate the West Cardinal Mark from other navigational aids, providing a unique and recognizable signal. The frequency of the flashes and the timing is standardized within the IALA system to ensure consistency across different maritime regions, aiding in the safety and efficiency of navigation.

In contrast, other options present different combinations of flashes or timing intervals that do not align with the established characteristics of a West Cardinal Mark as outlined by the IALA system. Therefore, understanding that the West Cardinal Mark has this specific rhythmic pattern is vital for mariners when determining safe navigation routes around hazards.