What light characteristic does Duwamish Head Light display?

Duwamish Head Light displays the characteristic of Fl W 2.5s, indicating it has a flashing white light that occurs every 2.5 seconds. In lighthouse terminology, "Fl" stands for "flashing," which refers to a light that is on for a specific duration and then off for a period, creating a distinguishable pattern.

The "W" denotes that the light is white, which is a common color for navigational aids because it is visible from great distances and provides clarity for mariners. The "2.5s" indicates the timing of the light's cycles, meaning every 2.5 seconds, the flashing occurs, providing important visual signals for those navigating in the vicinity.

Understanding these characteristics is essential for mariners who rely on lighthouse signals for safe navigation, indicating not only the presence of land or hazards but also helping to establish the specific location of the light in conjunction with navigational charts.