What is the visibility requirement for navigation lights on a boat?

The visibility requirement for navigation lights on a boat is that vessels must display consistent lighting for nighttime operations. This is essential for ensuring that a boat is visible to other vessels during low-light conditions, enhancing safety on the water. Proper navigation lights help prevent collisions by allowing boaters to see each other and determine the direction and type of vessels they are approaching.

At night or during periods of reduced visibility, it's crucial for vessels to adhere to standardized lighting requirements to communicate their position, heading, and status. These lights serve specific purposes—such as indicating the type of vessel (sailboat, powerboat, etc.) and whether it is underway or anchored—based on internationally recognized standards.

Other choices present limitations or misconceptions about navigation light requirements. For example, flashing lights are typically reserved for specific signaling situations and are not used continuously by recreational vessels. Although small crafts have some exemptions regarding certain regulations, navigation lights remain mandatory for safe operation during nighttime or poor visibility. Lastly, having lights visible only from 100 feet would not be adequate for ensuring safety on the water, as vessels need to be seen from much greater distances, depending on the situation and local regulations.