On 13 February at 0325 zone time, your DR...

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Question 1 of 2066636eea28f7522a1c51aa8f

On 13 February at 0325 zone time, your DR position is LAT 23°20'N, LONG 155°15'W. You are steering 240°T at a speed of 13.6 knots. What is the zone time of sunrise?

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Question 1 of 20

66636eea28f7522a1c51aa8f

On 13 February at 0325 zone time, your DR position is LAT 23°20'N, LONG 155°15'W. You are steering 240°T at a speed of 13.6 knots. What is the zone time of sunrise?

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🔍 Key Concepts

• Using the Nautical Almanac sunrise/sunset tables for a given date and latitude • Finding the correct zone description (ZD) from the longitude to convert between GMT and zone time • Allowing for the vessel’s run between DR time and sunrise along course and speed

💭 Think About

• From 0325 ZT and your DR position, how far (in time) will you move before local sunrise occurs at that latitude on 13 February? • Once you know the approximate GMT of sunrise, how do you convert that to zone time using the correct ZD for 155°15'W? • How does your movement west or east along the course affect the local time of sunrise compared with a fixed position?

✅ Before You Answer

• Use the correct time zone for 155°15'W (remember west longitudes usually have a positive ZD when converting GMT to ZT). • Make sure you use the nearest whole degree of latitude and the correct date when taking sunrise from the Nautical Almanac. • Check that your final answer is after 0325 ZT and is reasonable for a February sunrise in latitude 23°N (just north of the Tropics).

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Question 1 of 2066636eea28f7522a1c51aa8f

On 13 February at 0325 zone time, your DR position is LAT 23°20'N, LONG 155°15'W. You are steering 240°T at a speed of 13.6 knots. What is the zone time of sunrise?

Back

Question 1 of 20

66636eea28f7522a1c51aa8f

On 13 February at 0325 zone time, your DR position is LAT 23°20'N, LONG 155°15'W. You are steering 240°T at a speed of 13.6 knots. What is the zone time of sunrise?

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