For other uses, see Log book. Logbook used car book out sheet pdf the frigate Grand Turk.
Typical page layout in aircraft pilot’s logbook. It is essential to traditional navigation, and must be filled in at least daily. The term originally referred to a book for recording readings from the chip log, used to determine the distance a ship traveled within a certain amount of time.
The readings of the log have been recorded in equal times to give the distance traveled with respect to a given start position. Today’s ship’s log has grown to contain many other types of information, and is a record of operational data relating to a ship or submarine, such as weather conditions, times of routine events and significant incidents, crew complement or what ports were docked at and when.
The term logbook has spread to a wide variety of other endeavors. Today, a virtual or electronic logbook is typically used for record-keeping for complex machines such as nuclear plants or particle accelerators.