Connecticut Safe Boating Practice Test

When is it acceptable for power-driven vessels less than 39.4 feet in length to use an all-round white light?

1. When sailing

2. When anchored

3. When operating under engine power

4. When navigating through fog

The correct answer is: When operating under engine power

Power-driven vessels less than 39.4 feet in length are required to display an all-round white light when they are at anchor. This is an important safety measure, allowing other vessels to see them clearly. However, it's also essential for these vessels to use an all-round white light at night or during periods of restricted visibility while under engine power. The use of an all-round white light while operating under engine power indicates the vessel's presence and helps avoid potential collisions. It serves to inform other maritime traffic of the vessel's size and operational status, enhancing navigational safety. In contrast, certain scenarios do not call for the use of an all-round white light in the same manner, such as when a vessel is sailing or navigating through fog without the engine in use. In those cases, different lighting configurations are necessary to comply with navigation rules.