What type of rhythm does the light of a North Cardinal Mark exhibit?

The light of a North Cardinal Mark exhibits a very quick or quick and uninterrupted rhythm. This specific characteristic is essential because it provides mariners with a consistent and recognizable signal that indicates they should keep the mark to the north of their current position. The rapid light sequence serves to alert navigators to the mark’s purpose and helps in the identification of the mark during the night or in poor visibility conditions.

This type of rhythm is distinctive compared to other buoy lights, as each cardinal mark has its own light characteristic designed to convey precise navigational information. The very quick or quick and uninterrupted rhythm ensures that the light is visible and distinguishable from other navigational aids, which is crucial for safe navigation in waters where precise channeling is necessary.