Question 409Navigation General

The correct answer is C) you have entered an area of shoal water or other hazard. When a lighthouse light changes from white to red, it indicates that the vessel has entered an area of shoal water or other navigational hazards. This is a standard signal used by lighthouses to warn mariners of potentially dangerous conditions ahead. The change in color is part of the lighthouse's identification characteristics and is not related to the lighthouse losing power or flashing alternately. The other options are incorrect because they do not accurately reflect the meaning of a lighthouse transitioning from a white to a red light. Option A is incorrect as the color change is not the identifying characteristic, but rather a warning signal. Option B is incorrect as the change in color is not related to a flashing pattern. Option D is incorrect as the change in color does not indicate a loss of power or emergency lighting.