A compass is a navigational instrument for determining direction relative to the Earth's magnetic poles. It consists of a magnetized pointer (usually marked on the North end) free to align itself with Earth's magnetic field. The compass greatly improved the safety and efficiency of travel, especially ocean travel.
What compass is used in navigation?
Types of compass
- Base plate compass. It is the most affordable compass. ...
- Thumb compass. Thumb compass on left, base plate on the right. ...
- Card compass. Card compass or marine compass is commonly used in ships and boats. ...
- Prismatic compass. ...
- Gyro compass. ...
- Astrocompass. ...
- Solid state compass. ...
- GPS compass.
How does a compass work for navigation?
A compass works by detecting the Earth's natural magnetic fields. ... This allows the needle to better react to nearby magnetic fields. Since opposites attract the southern pole of the needle is attracted to the Earth's natural magnetic north pole. This is how navigators are able to discern north.
