What is the light characteristic of an east cardinal mark?

• A. Q or VQ (3)
• B. Q or VQ continuous
• C. Pulsating white light
• D. Flashing yellow light

Answer: (A)

The light characteristic of an east cardinal mark is specifically Q or VQ (3). This refers to the light's behavior, where "Q" stands for quick flashing and "VQ" indicates very quick flashing. The number "3" denotes that it flashes three times in a brief sequence, then a pause occurs before the cycle restarts.

Cardinal marks are used to indicate safe navigational routes and are essential in maritime navigation. The east cardinal mark indicates that safe water lies to the east of the mark, which is critical information for mariners. The characteristics help mariners to distinguish the mark's position relative to surrounding hazards or navigational features, ensuring safe passage.

Other options do not accurately reflect the established conventions of cardinal marks. Each option has specific light characteristics associated with different navigational requirements, but the distinct flashing sequence of Q or VQ (3) aligns precisely with the east cardinal mark, making it the correct choice.