Chart Navigation & Plotting · Speed-Time-Distance — Six-Minute Rule
Using the six-minute rule, how far do you travel in 6 minutes at 15 knots?
- A2.5 nautical miles
- B0.9 nautical miles
- C1.5 nautical miles✓ Correct
- D0.6 nautical miles
Explanation
Six minutes is one-tenth of an hour, so distance (nm) = speed (kn) ÷ 10. At 15 knots you cover 1.5 nm in 6 minutes.
Authority: Bowditch (Pub. No. 9), speed-time-distance; six-minute rule
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