Why would sailors need to keep track of the time?

Sailors need to keep track of time for navigation, as precise timekeeping is essential for determining longitude and calculating their position at sea. Accurate time allows them to use celestial navigation methods effectively, such as referencing the position of stars and the sun. Additionally, maintaining a schedule is crucial for coordinating tasks, managing crew shifts, and ensuring safety during watchkeeping. Overall, timekeeping is vital for both navigation accuracy and operational efficiency at sea.