Chart Navigation & Plotting · Speed-Time-Distance
You run for 40 minutes at 9 knots. How far have you traveled?
- A9.0 nautical miles
- B3.6 nautical miles
- C6.0 nautical miles✓ Correct
- D13.5 nautical miles
Explanation
Distance = speed × time = 9 × (40/60) = 9 × 0.667 = 6.0 nautical miles. From 60·D = S·T: D = 9 × 40 / 60 = 6.0 NM.
Authority: Bowditch, American Practical Navigator (Pub. 9)
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