What is a "zygo" used for in navigation?

In navigation, a "zygo" refers to a system for gyroscopic orientation, which is crucial for maintaining accurate heading information. Gyroscopic instruments are commonly used on vessels to provide stable references for navigation and maneuvering. These instruments work based on the principles of angular momentum, allowing them to maintain their orientation regardless of external forces or the movement of the vessel.

By utilizing gyroscopic stabilization, navigators can rely on consistent and precise readings, which helps ensure safe and efficient navigation, especially in challenging conditions such as heavy seas or during nighttime operations. This system enhances the overall reliability of navigation equipment, allowing for better course maintenance and situational awareness.

The other options are not applicable in the context of navigation. While buoys serve as navigational aids, they do not fall under the category of a "zygo." Navigational chart types and fire safety devices are also unrelated to gyroscopic orientation and its functions in navigation.