If you have 20 minutes and maintain 60 knots, how many nautical miles do you cover?

• A. 10 NM
• B. 15 NM
• C. 20 NM
• D. 25 NM

Answer: (C)

Speed in knots is nautical miles per hour. At 60 knots you cover 60 nautical miles in one hour. Convert 20 minutes to hours: 20/60 = 1/3 hour. Multiply: 60 nm/hour × 1/3 hour = 20 nautical miles. A quick check: 60 knots is 1 nautical mile per minute, so in 20 minutes you’d travel 20 nautical miles. Therefore, you cover 20 nautical miles.