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2. Logbook (nautical) - Wikipedia

   en.wikipedia.org/wiki/Logbook_(nautical)

   Logbook (nautical) Logbook aboard the frigate Grand Turk. A logbook (a ship's logs or simply log) is a record of important events in the management, operation, and navigation of a ship. 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 ...

3. Logbook - Wikipedia

   en.wikipedia.org/wiki/Logbook

   A logbook (or log book) is a record used to record states, events, or conditions applicable to complex machines or the personnel who operate them. Logbooks are commonly associated with the operation of aircraft, nuclear plants, particle accelerators, and ships (among other applications). The term logbook originated with the ship's log, a ...

4. Chip log - Wikipedia

   en.wikipedia.org/wiki/Chip_log

   A chip log consists of a wooden board attached to a line (the log-line). The log-line has a number of knots at uniform intervals. The log-line is wound on a reel so the user can easily pay it out. Over time, log construction standardized. The shape is a quarter circle, or quadrant with a radius of 5 inches (130 mm) or 6 inches (150 mm), [1] and ...

5. Shipwreck discovered at bottom of Florida Keys is revealed to ...

   www.aol.com/shipwreck-discovered-bottom-florida...

   How five submerged cannons and a note in a log book margin helped to identify the whereabouts of HMS Tyger’s remains ... The impressive ship, built in 1647, is believed to have been a 50-gun ...

6. Rutter (nautical) - Wikipedia

   en.wikipedia.org/wiki/Rutter_(nautical)

   Rutter (nautical) A rutter is a mariner's handbook of written sailing directions. Before the advent of nautical charts, rutters were the primary store of geographic information for maritime navigation. It was known as a periplus ("sailing-around" book) in classical antiquity and a portolano ("port book") to medieval Italian sailors in the ...

7. Electromagnetic log - Wikipedia

   en.wikipedia.org/wiki/Electromagnetic_Log

   Electromagnetic log. An Electromagnetic Log, sometimes called an "EM log", is an electronic sensor which measures the speed of a vessel through sea water. Like many other technologies, its name derives from the traditional chip log. It makes use of Faraday's law of induction by measuring the EMF induced in water moving through a magnetic field ...