What is the characteristic of Duwamish Head Light?

The characteristic of the Duwamish Head Light is a flashing white light that occurs every 2.5 seconds. This means that it emits a short flash of light followed by a period of darkness before the next flash. The specific interval of 2.5 seconds helps mariners clearly identify the lighthouse and its location, especially in conditions where visibility may be limited.

The frequency of the flash is an important navigational aid, as it allows ships to discern the light from other navigational markers or sources of light in the area. The Duwamish Head Light’s characteristic not only serves practical purposes for navigation but is also consistent with established practices for maritime lighting, ensuring that mariners are able to recognize and distinguish different lights based on their unique rhythms and patterns.

In contrast, other options reflect different intervals of flashes, which denote different light characteristics associated with other lighthouses. Each light has its unique timing and pattern, making it recognizable to maritime operators, but the defining characteristic for Duwamish Head specifically is the 2.5-second interval flash.