iLearnToBoat Final Exam Practice Test

Question: 1 / 400

When must navigation lights be displayed on a vessel?

Only during bad weather

From sunset to sunrise and when visibility is restricted

Navigation lights must be displayed on a vessel from sunset to sunrise and when visibility is restricted due to conditions such as fog, rain, or snow. This requirement is critical because it helps ensure that vessels are visible to each other under low-light conditions or when visual range is compromised, thereby preventing collisions.

At night, navigation lights indicate the size, direction, and type of vessel to other boats, which is essential for safe navigation. During restricted visibility, these lights become equally important as they allow mariners to gauge the presence and movement of other vessels, thus enhancing safety on the water.

Other choices do not encompass the full set of conditions under which navigation lights are necessary, such as only being required in specific weather conditions or only during daylight hours, which could lead to dangerous situations on the water.

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Only during daylight hours

At all times regardless of weather conditions

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