On a chart, the characteristic of the light...

Question 1 / 2707066636ee928f7522a1c5192ff

Question 1 of 2707066636ee928f7522a1c5192ff

On a chart, the characteristic of the light on a lighthouse is shown as flashing white with a red sector. Which is TRUE of the red sector?

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Question 1 of 27070

On a chart, the characteristic of the light on a lighthouse is shown as flashing white with a red sector. Which is TRUE of the red sector?

🔍 Key Concepts

• Meaning of a sector light on nautical charts • Purpose of a red sector versus a white sector on a lighthouse light • How chart notes and legends describe danger areas, shoals, or obstructions

💭 Think About

• Ask yourself: When you see a colored sector (red or green) on a light, what is that color usually warning you about relative to your vessel’s safe track? • Consider what part of the light’s description tells you the rhythm (flashing, occulting, etc.) and what part tells you about hazards or safe water. • Think about where a mariner would most need extra warning: in the center of a channel, or when getting too close to hazards like shoals or rocks?

✅ Before You Answer

• On a chart, verify how sector lights are drawn: look at the arcs and color shading around the light symbol. • Check what the chart legend or pilot book says about red sectors—do they mark safe water or warn of shoals/rocks/obstructions? • Confirm that the characteristics of the light (Fl, Oc, Iso, color) are listed in text, while colored sectors are used for a different purpose.

Question 1 of 27070

On a chart, the characteristic of the light on a lighthouse is shown as flashing white with a red sector. Which is TRUE of the red sector?

It serves no significant purpose

It indicates the limits of the navigable channel

It is used to identify the characteristics of the light

It indicates a danger area

Question 1 / 2707066636ee928f7522a1c5192ff

Question 1 of 2707066636ee928f7522a1c5192ff

On a chart, the characteristic of the light on a lighthouse is shown as flashing white with a red sector. Which is TRUE of the red sector?

Back

Question 1 of 27070

On a chart, the characteristic of the light on a lighthouse is shown as flashing white with a red sector. Which is TRUE of the red sector?