What is one of the practical applications of STELLA?

The answer revolves around the capability of STELLA, which is a powerful software tool used in maritime navigation. One practical application of STELLA is to perform a gyro check by calculating the bearing of the sun. This process involves measuring the angle of the sun relative to the vessel's position and comparing it to known celestial navigation data to determine if the ship's gyrocompass is functioning correctly. By accurately calculating the bearing of the sun, navigators can ensure that their gyrocompass readings are precise, which is crucial for safe navigation, particularly when adjusting course and avoiding hazards.

Choosing this option highlights the importance of celestial navigation techniques in conjunction with technology, allowing navigators to verify and correct their instruments. The other choices, while relevant to navigation, do not specifically relate to STELLA's primary functionalities or focus in the context of gyro checks and celestial bearings.