How do submarines calculate the distance they travel? Wouldn't nautical miles be inaccurate?
Submarines use a variety of methods to calculate the distance they travel, including:
- Dead reckoning: This is the most basic method and involves using the submarine's speed and direction to estimate the distance travelled. However, this method can be inaccurate, especially over long distances.
- Inertial navigation: This system uses gyroscopes and accelerometers to track the submarine's movement. It is more accurate than dead reckoning, but can still be affected by errors over time.
- GPS: This system uses satellites to track the submarine's position. It is the most accurate method, but can be unavailable in some areas.
Nautical miles are a unit of distance that is based on the Earth's circumference. However, the Earth's circumference is not uniform, so nautical miles can be inaccurate over long distances. For example, a nautical mile is shorter at the equator than it is at the poles.
Related Questions
- What is the most accurate method for calculating the distance a submarine travels? GPS
- What factors can affect the accuracy of dead reckoning? Speed, direction, and time
- What is the difference between a nautical mile and a statute mile? A nautical mile is longer than a statute mile
- What is the circumference of the Earth at the equator? 40,075.017 km
- What is the circumference of the Earth at the poles? 40,007.863 km
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