During the night for a small craft warning, which marker is used?

The correct marker used during a small craft warning at night is the red light. In maritime communication, the red light serves as a signal to vessels that small craft should exercise caution due to unfavorable conditions. It highlights that the presence of small craft warnings requires attention, particularly in adverse weather conditions, and alerts mariners to potential dangers. Recognizing this signaling is essential for ensuring safety and navigation during nighttime operations.

The other choices would not accurately convey the intended message for small craft warnings during the night. Two red lights, for instance, might indicate different maritime signals and do not specifically denote a small craft warning. White over red typically indicates a different type of navigational or warning signal, and the red pennant is recognized during the daytime, rather than at night. Understanding these distinctions is crucial for effective maritime navigation and response during various weather conditions.