Chart Navigation & Plotting · Speed-Time-Distance — ETA
It is 0930 and you have 45 nautical miles to run at 12 knots. What is your ETA?
- A1315✓ Correct
- B1245
- C1345
- D1215
Explanation
Time to run = 45 ÷ 12 = 3.75 h = 3 h 45 m. 0930 + 3 h 45 m = 1315. Always express the running time in hours and minutes before adding to the start time.
Authority: Bowditch (Pub. No. 9), speed-time-distance; ETA
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