What does the term "flashing light" refer to?

The term "flashing light" is defined in maritime navigation regulations to refer specifically to a light that flashes at regular intervals at a frequency of 120 flashes or more per minute. This type of signaling is crucial in conveying specific information to vessels in operation, as it provides a clear and recognizable signal indicative of the light's role and significance in navigation.

Flashing lights are often utilized to indicate special navigational features or hazards. The requirement for the frequency of 120 flashes or more per minute ensures that these signals are distinct and attention-grabbing, allowing for effective communication in busy or complex navigational situations. This frequency differentiates it from other types of lights, ensuring that mariners can quickly understand the nature of the signaling vessel or navigational aid.

The other choices describe characteristics that do not align with this specific definition. For example, a light flashing at intervals of 60 flashes or more per minute does not meet the minimum speed-defined standard of a flashing light. Similarly, lights that change color frequently or those that remain solid without interruption do not fit the criteria for a flashing light defined in maritime regulations. Understanding these distinctions is vital for safe navigation and compliance with the COLREGs guidelines.