On 18 October your 1330 ZT DR position is...

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Question 1 of 2066636eea28f7522a1c51ab8f

On 18 October your 1330 ZT DR position is LAT 27°32.0'N, LONG 154°47.0'W. You are on course 115°T at a speed of 20 knots. What will be the zone time of sunset at your vessel?

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66636eea28f7522a1c51ab8f

On 18 October your 1330 ZT DR position is LAT 27°32.0'N, LONG 154°47.0'W. You are on course 115°T at a speed of 20 knots. What will be the zone time of sunset at your vessel?

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🔍 Key Concepts

• Zone time (ZT) vs Greenwich Mean Time (GMT/UT) and how longitude affects local time • How to determine the zone description (ZD) from longitude, including the sign (plus or minus) • Using the Nautical Almanac sunset tables for the date and latitude, then adjusting to the ship’s time zone

💭 Think About

• From LAT 27°32.0'N on 18 October, where in the Nautical Almanac would you find the base time of sunset, and in what time standard is that value given? • Given LONG 154°47.0'W, what is the correct zone description (ZD) for your position, and how does that change GMT to ZT (do you add or subtract)? • After finding the base sunset time, what corrections (if any) must you apply for your exact latitude and longitude before converting to zone time?

✅ Before You Answer

• Confirm you are using the correct date and latitude line in the sunset tables (Northern vs Southern hemisphere, correct month and day). • Double-check the sign of the zone description (ZD) for west longitude and how it impacts the conversion from GMT to ZT. • Be sure you apply any interpolation or small corrections from the Almanac tables before you pick the closest multiple-choice option.

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Question 1 of 2066636eea28f7522a1c51ab8f

On 18 October your 1330 ZT DR position is LAT 27°32.0'N, LONG 154°47.0'W. You are on course 115°T at a speed of 20 knots. What will be the zone time of sunset at your vessel?

Back

Question 1 of 20

66636eea28f7522a1c51ab8f

On 18 October your 1330 ZT DR position is LAT 27°32.0'N, LONG 154°47.0'W. You are on course 115°T at a speed of 20 knots. What will be the zone time of sunset at your vessel?

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?

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