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With the introduction of the nautical mile as a standard unit of measure at sea in the 15th century, they began to mark the line at equal intervals proportional to the nautical mile and to the time interval used for measurement. Initially, the markings were simply knots in the line. Later, sailors worked knotted cords into the log-line.
Although the unit knot does not fit within the SI system, its retention for nautical and aviation use is important because the length of a nautical mile, upon which the knot is based, is closely related to the longitude/latitude geographic coordinate system. As a result, nautical miles and knots are convenient units to use when navigating an ...
[[Category:Knot templates]] to the <includeonly> section at the bottom of that page. Otherwise, add <noinclude>[[Category:Knot templates]]</noinclude> to the end of the template code, making sure it starts on the same line as the code's last character.
It consists of a small board with a knotted piece of twine through the center. The observer holds one of the knots in his mouth and extends the board away so that the edges make a constant angle with his eyes. Mariner's astrolabe Derived from the astrolabe, it was developed in late 15th century and found use in the 16th to 17th centuries.
nautical chart A map of a sea or ocean area and adjacent coastal regions, intended specifically for navigation at sea. Nautical charts use map projections designed for easy use with hand instruments, such as the Mercator projection, and indicate depths, hazards, landmarks, aids to navigation such as buoys, and ashore facilities of interest to ...
{{Knots | state = expanded}} will show the template expanded, i.e. fully visible. {{Knots | state = autocollapse}} will show the template autocollapsed, i.e. if there is another collapsible item on the page (a navbox, sidebar, or table with the collapsible attribute), it is hidden apart from its title bar, but if not, it is fully visible.
This template is intended for linking between knot related templates, such as in the "See also" section. Editors can experiment in this template's sandbox ( create | mirror ) and testcases ( create ) pages.
This page describes standard box and diagram templates used for specific subject matter items. They include right and left side, or lower article boxes, calendars, tables, grids and diagrams used in article expostion. The templates provide a consistent, clean format for the displayed information. Infoboxes are described on the Infoboxes page.