Chart Navigation & Plotting · Speed-Time-Distance — Three-Minute Rule
By the three-minute rule, a vessel at 10 knots travels how many yards in 3 minutes?
- A1,000 yards✓ Correct
- B100 yards
- C3,000 yards
- D600 yards
Explanation
Three-minute rule: yards in 3 minutes ≈ speed in knots × 100. At 10 knots that is about 1,000 yards.
Authority: Bowditch (Pub. No. 9), Speed-Time-Distance
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