If the visibility is 10 miles and you are in...

Question 1 / 2707066636eea28f7522a1c51b839

Question 1 of 2707066636eea28f7522a1c51b839

If the visibility is 10 miles and you are in the red sector, at what distance off should you sight Cape Henry Light?

Question 1 of 27070

If the visibility is 10 miles and you are in the red sector, at what distance off should you sight Cape Henry Light?

🔍 Key Concepts

• Nominal range vs. geographic range of a light on a nautical chart • Meaning of being "in the red sector" of a sector light • How meteorological visibility (10 miles in this question) interacts with the charted range of a light

💭 Think About

• Look at a light list or chart: what is the charted nominal range of Cape Henry Light in the red sector, and how does that compare to 10 miles? • Ask yourself: if the visibility is 10 miles, can you ever see a light further than that just because its nominal range is greater? • Consider whether being in the red sector changes the distance at which you first sight the light, or just the color you see when you are within range.

✅ Before You Answer

• Verify the charted nominal range of Cape Henry Light’s red sector on a chart or Light List, not from memory if you’re unsure • Check that your chosen distance is not greater than the stated visibility of 10 miles • Confirm you are thinking about the earliest distance of first sighting, not the distance at which the color changes.

Question 1 of 27070

If the visibility is 10 miles and you are in the red sector, at what distance off should you sight Cape Henry Light?

15 miles

10 miles

8 miles

12 miles