🔍 Key Concepts

• Articulated lights and how they are constructed/anchored compared with standard buoys • What a watch circle is and why it matters for navigation safety • Operational advantages of different buoy features: fog signals, radar reflectors, and lighting types

💭 Think About

• Think about how an articulated light moves in the water compared to a conventional buoy. How does that movement affect where the light actually is? • Which trait would most directly help keep the aid to navigation closer to its charted position, especially in strong wind or current? • Among the listed traits, which one is unique to articulated lights as a design feature, rather than just equipment that could be added to many buoy types?

✅ Before You Answer

• Be clear on the definition of watch circle and what makes it larger or smaller • Identify which options describe equipment that could be fitted to almost any buoy, versus a trait tied to the mooring/structure itself • Ask which feature most improves the positional reliability of the aid, not just its visibility or detectability