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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 that was used to estimate a ship's speed through the ...
Diagram of a chip log attached to a log-line and reel on a ship. A chip log, also called common log, [1] ship log, or just log, is a navigation tool mariners use to estimate the speed of a vessel through water. The word knot, to mean nautical mile per hour, derives from this measurement method.
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).
If the template has a separate documentation page (usually called "Template:template name/doc"), add [[Category:Ship templates]] to the <includeonly> section at the bottom of that page.
Use the ship's number at one of the supported registers to create a link to that register. This template is intended to be used in the |Ship identification= field in {{ Infobox ship career }} . Usage
It was known as a periplus ("sailing-around" book) in classical antiquity and a portolano ("port book") to medieval Italian sailors in the Mediterranean Sea. Portuguese navigators of the 16th century called it a roteiro , the French a routier , from which the English word "rutter" is derived.
Thomas Walker was born in London in 1805. [3] Before the age of ten he left home to find work in Stoke-on-Trent in the Potteries. He began his working life in the pottery industry, first as a labourer then later as a print assistant, when he revealed early signs of inventive skill by devising a rubber system for printing.
Impeller log:A variation of this approach is known as a patent log, which is towed from the stern of a ship. The patent log includes a mechanical register that counts the log's rotations as it is being towed. The patent log was invented in 1688 by the English instrument maker Humphry Cole. The patent log is also known as a screw log or taffrail ...