What is a key characteristic of a gyrocompass compared to a magnetic compass?

A gyrocompass operates on the principles of gyroscopic motion and does not depend on the Earth's magnetic field, which is a significant difference from a magnetic compass. This independence from magnetic fields means that a gyrocompass is less affected by external influences, such as magnetic interference from nearby metal objects or variations in the Earth's magnetic field. As a result, it provides a more stable and accurate heading in various environments, particularly in navigation scenarios where magnetic compasses may encounter distortions due to local magnetic anomalies.

The other characteristics mentioned, such as the reliance on magnetic fields, automatic compensation for magnetic deviation, and the need for manual adjustment for true heading, do not apply to gyrocompasses. Instead, the gyrocompass maintains its performance without the interference that can affect magnetic compasses, making it a valuable tool in maritime navigation where precision is critical.