Your vessel departs Yokohama from position...

Question 1 / 2066636eea28f7522a1c51b7ab

Question 1 of 2066636eea28f7522a1c51b7ab

Your vessel departs Yokohama from position LAT 35°27.0'N, LONG 139°39.0'E (ZD -9), at 1330 ZT on 23 July, bound for Seattle at position LAT 47°36.0'N, LONG 122°22.0'W (ZD +8). The distance by great circle is 4,245 miles, and you estimate that you will average 13.6 knots. What is your estimated ZT of arrival?

Back

Question 1 of 20

66636eea28f7522a1c51b7ab

No comments yet

Be the first to share your thoughts!

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

🔍 Key Concepts

• Time zone (ZD) differences between departure and destination and how they affect local time vs. GMT/UTC • Using speed–time–distance: ( \text{Time (hours)} = \frac{\text{Distance (NM)}}{\text{Speed (knots)}} ) to find steaming time • Converting between Zone Time (ZT) and Greenwich Mean Time (GMT/UTC) when crossing the International Date Line

💭 Think About

• First, work out how many hours the voyage will take using the given great-circle distance and average speed. Keep your units consistent. • Convert the departure local time (ZT at Yokohama with ZD -9) to GMT/UTC, then add the steaming time to get an arrival time in GMT/UTC. • Once you have arrival GMT/UTC, convert it to the destination zone time (ZT at Seattle with ZD +8), and then carefully adjust the date considering that you’re crossing from east longitude to west longitude across the Pacific.

✅ Before You Answer

• Be sure you are using the correct time zone signs (ZD -9 and ZD +8) and not reversing them when going between ZT and GMT/UTC. • Verify whether the International Date Line crossing causes you to gain or lose a calendar day when going from Japan to the U.S. West Coast. • Double-check that your final answer’s time of day and calendar date both match the total steaming time you calculated from departure.

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

Quick actions

— No credit card needed

Question 1 of 20

0438, 4 August

2038, 4 August

0438, 5 August

1238, 5 August

Loading interactive features...

Question 1 / 2066636eea28f7522a1c51b7ab

Question 1 of 2066636eea28f7522a1c51b7ab

Back

Question 1 of 20

66636eea28f7522a1c51b7ab

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