Your 0830 DR position is LAT 27°33'S, LONG...

Question 1 / 2066636eea28f7522a1c51a93a

Question 1 of 2066636eea28f7522a1c51a93a

Your 0830 DR position is LAT 27°33'S, LONG 79°17'E. Your vessel is on a course of 066°T, at a speed of 19.5 knots. Determine the time of LAN on 10 December.

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Question 1 of 20

66636eea28f7522a1c51a93a

Your 0830 DR position is LAT 27°33'S, LONG 79°17'E. Your vessel is on a course of 066°T, at a speed of 19.5 knots. Determine the time of LAN on 10 December.

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🔍 Key Concepts

• Local Apparent Noon (LAN) occurs when the Sun is highest on your local meridian, not necessarily at 1200 zone time • The relationship between longitude and time: 15° of longitude equals 1 hour of time • How to convert between Greenwich Hour Angle (GHA), longitude, and time to find when the Sun is on your meridian

💭 Think About

• What must be true about the Sun’s hour angle relative to your longitude at the exact moment of LAN? • Starting from 0000 GMT on 10 December, how do you figure out when the Sun’s GHA will line up with your DR longitude? • How many minutes of time correspond to a 1° change in GHA, and how does that help you refine the LAN time to the nearest minute?

✅ Before You Answer

• Be clear about the sign of your longitude (East vs West) and how that affects when the Sun crosses your meridian • Verify whether you are using GMT (UTC) or zone time when you compare your result with the answer choices • Check that your computed time is reasonable for your longitude (East longitudes should see LAN earlier than Greenwich on the same date)

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Question 1 of 20

Your 0830 DR position is LAT 27°33'S, LONG 79°17'E. Your vessel is on a course of 066°T, at a speed of 19.5 knots. Determine the time of LAN on 10 December.

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Question 1 / 2066636eea28f7522a1c51a93a

Question 1 of 2066636eea28f7522a1c51a93a

Your 0830 DR position is LAT 27°33'S, LONG 79°17'E. Your vessel is on a course of 066°T, at a speed of 19.5 knots. Determine the time of LAN on 10 December.

Back

Question 1 of 20

66636eea28f7522a1c51a93a

Your 0830 DR position is LAT 27°33'S, LONG 79°17'E. Your vessel is on a course of 066°T, at a speed of 19.5 knots. Determine the time of LAN on 10 December.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed