What is the light characteristic of Sackets Harbor Light?

Sackets Harbor Light exhibits a characteristic light sequence that helps mariners identify this specific navigation aid. The correct answer indicates a light pattern known as "Fl W 2.5s," where "Fl" stands for a flash characteristic, "W" signifies that the light is white, and "2.5s" means the light flashes once every 2.5 seconds. This specific flashing pattern is designed to be easily recognizable and assist in safe navigation by providing a distinct signal that can be identified visually, especially during low visibility conditions or at night.

The other options represent different light characteristics that do not correspond to Sackets Harbor Light. For instance, "F G" indicates a fixed green light, which is used for other navigational purposes but does not reflect the flashing white characteristic of Sackets Harbor Light. Similarly, "Iso R 2s" would refer to an isophase red light, while "Fl R 2s" signifies a flashing red light. Each of these characteristics serves different navigational needs, but only "Fl W 2.5s" accurately describes the light at Sackets Harbor. This distinction emphasizes the importance of specific light characteristics in navigation and aids in identifying different lighthouses and markers along the waterways