An aircraft travels 2150 nautical miles in 2 hours 30 minutes. What is the average speed of the aircraft? - Quora
Why is the speed of aircraft, ships, and submarines measured in knots instead of in mph or km/h? - Quora
Coastguard New Zealand - What is a nautical mile? A nautical mile = 1.852 kilometres. The knot (/nɒt/) is a unit of speed equal to one nautical mile per hour, exactly 1.852
![Typical evolution of the specific range (SR) in nautical miles (NM) per... | Download Scientific Diagram Typical evolution of the specific range (SR) in nautical miles (NM) per... | Download Scientific Diagram](https://www.researchgate.net/profile/David-Rey-3/publication/262912863/figure/fig2/AS:392531637489666@1470598243320/Typical-evolution-of-the-specific-range-SR-in-nautical-miles-NM-per-kilogram-of-fuel.png)