You are on a voyage from Valdez, AK, to the...

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Question 1 of 2066636eea28f7522a1c51b86a

You are on a voyage from Valdez, AK, to the Panama Canal. The distance from pilot to pilot is 4950 miles. The speed of advance is 15.0 knots. You estimate a layover in San Francisco, CA, of 36.0 hours. If you take departure at 0800 (ZD +10), 29 October, what is your ETA (ZD +5) at the Panama Canal?

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Question 1 of 20

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🔍 Key Concepts

• Speed of advance (SOA) and the time-distance-speed relationship: ( \text{Time} = \frac{\text{Distance}}{\text{Speed}} ) • Converting total travel time in hours to days and hours, then adding layover time • Adjusting times between different zone descriptions (ZD +10 to ZD +5) and tracking the date change over a long voyage

💭 Think About

• First, ignore the layover and time zones. How many hours will it take to travel 4950 miles at 15 knots? Convert that to days and hours. • Next, add the 36-hour layover to your sea time, then add this total time to your departure date and time in ZD +10. What local date and time do you arrive in ZD +10? • Finally, convert that arrival time from ZD +10 to ZD +5. How many hours difference is that, and in which direction do you adjust the clock and possibly the calendar?

✅ Before You Answer

• Verify your use of ( \text{Time} = \frac{\text{Distance}}{\text{Speed}} ) and keep all units in nautical miles and hours. • Carefully convert between hours and days and make sure you correctly handle whole days plus leftover hours. • Double-check the 5-hour difference between ZD +10 and ZD +5 and make sure your final local date (calendar day) lines up with one of the choices.

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