What color is the upper portion of the Main Duck Light tower?

The upper portion of the Main Duck Light tower is indeed red. The use of red as a color for light towers is significant in maritime navigation, as it helps to distinguish between different navigational aids and assists in safety for vessels navigating the waters. This coloration is standardized so that mariners can quickly identify the type of light based on its color and location. In many cases, the specific coloration schemes are established by maritime authorities to provide consistent visual signals to boaters, especially at night or during low visibility conditions.

In contrast, other colors like green, white, and blue might be used for different types of navigation aids or might refer to other towers, but they do not reflect the specific characteristics of the Main Duck Light. Understanding the specific color designations is crucial for effective navigation and safety at sea.