If you are 20 nautical miles from a waypoint and your speed over ground is 10 knots, what is the estimated time to reach the waypoint?

If you are 20 nautical miles from a waypoint and your speed over ground is 10 knots, what is the estimated time to reach the waypoint?

• A. One Hour
• B. Two Hours
• C. Three Hours
• D. Four Hours

Answer: (B)

Time to reach a waypoint comes from dividing the distance by the speed over ground. Knots mean nautical miles per hour, so at 10 knots you cover 10 nautical miles each hour. If you’re 20 nautical miles away, the time required is 20 divided by 10, which equals 2 hours (120 minutes). Since the speed is given as over ground, this already accounts for current effects, so no extra adjustment is needed with the information provided.

Time to reach a waypoint comes from dividing the distance by the speed over ground. Knots mean nautical miles per hour, so at 10 knots you cover 10 nautical miles each hour. If you’re 20 nautical miles away, the time required is 20 divided by 10, which equals 2 hours (120 minutes). Since the speed is given as over ground, this already accounts for current effects, so no extra adjustment is needed with the information provided.