🔍 Key Concepts

• Light characteristics on nautical charts and in the Light List (period, color, phase) • Structure description of aids to navigation (shape, color, type of tower or structure) • How exam questions often ask for the exact wording from the chart or Light List entry

💭 Think About

• Look at how a light is normally described: which parts refer to timing, which to height, which to seasons, and which to the physical structure? • Ask yourself: which of these four answers sounds like a description of the structure itself, not its operation, schedule, or height? • If you had the chart or Light List in front of you, which item would be under the column that describes the type of structure rather than the light characteristic or elevation?

✅ Before You Answer

• Be sure you can distinguish between light characteristic (flashes and period) and structural description (tower shape, color, material). • Confirm in your mind which answer choices clearly relate to height above sea level or seasonal operation, and set those aside if the question is about how the light is “shown.” • Ask: in standard nautical references, when they say a light is “shown from…”, what typically follows — a timing, a date range, a height, or a description of the structure?