Navigation Problems USCG Question #725 (Set 21)

You are on a voyage from Baltimore, MD to Seattle, WA. The distance from pilot to pilot is 5960 miles. The speed of advance is 16.0 knots. You estimate 16 hours for bunkering at Colon, and 12.0 hours for the Panama Canal transit. If you take departure at 0824 hours (ZD +5), 18 November, what is your ETA (ZD +8) at Seattle?

Official USCG Answer & Rule Citation

Correct Answer: Option C — 2154, 4 December

Calculate steaming time by dividing distance by speed (5960 / 16.0 = 372.5 hours). Add bunkering and canal transit delays. Convert total elapsed time into days and hours. Apply the zone description difference between Baltimore (ZD +5) and Seattle (ZD +8) to determine the precise local arrival date and time.

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