Why is it important to record the sunrise and sunset in the deck log?

Recording the sunrise and sunset in the deck log is crucial for navigation and operational readiness. These times are essential for determining the amount of daylight available, which affects a variety of naval operations, such as conducting drills, performing maintenance, and ensuring safety while underway. Knowing when it will be dark helps in planning tasks that need to be completed during daylight to avoid operating in reduced visibility.

Moreover, accurate times for sunrise and sunset assist in navigation, particularly in calculating the ship's ship's position relative to landmarks and other navigational aids. In addition, understanding the daylight hours is important for watch standing and ensuring that proper protocols are followed to maximize safety during both day and night operations.