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A nautical chart or hydrographic chart is a graphic representation of a sea region or water body and adjacent coasts or banks. Depending on the scale of the chart, it may show depths of water ( bathymetry) and heights of land ( topography ), natural features of the seabed, details of the coastline, navigational hazards, locations of natural and ...
An electronic navigational chart ( ENC) is an official database created by a national hydrographic office for use with an Electronic Chart Display and Information System ( ECDIS ). [ 1] ECDIS and ENCs are the primary means of electronic navigation on cargo ships. [ 1] Charts can be used in navigation to provide an indication of location once a ...
Portolan charts are nautical charts, first made in the 13th century in the Mediterranean basin and later expanded to include other regions. The word portolan comes from the Italian portolano, meaning "related to ports or harbors ", and which since at least the 17th century designates "a collection of sailing directions".
Admiralty Chart of the coast of Peru, surveyed by Robert FitzRoy in 1836, engraved in 1840, and published with corrections to 1960. Charts were printed from copper plates. Plates were engraved, in reverse, with a burin. The plate was inked, and the excess ink wiped from the flat surface before printing, so that ink remained only in the engraved ...
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 ...
Light characteristic. A light characteristic is all of the properties that make a particular navigational light identifiable. Graphical and textual descriptions of navigational light sequences and colours are displayed on nautical charts and in Light Lists with the chart symbol for a lighthouse, lightvessel, buoy or sea mark with a light on it.
Pages in category "Nautical charts". The following 12 pages are in this category, out of 12 total. This list may not reflect recent changes . Nautical chart.
A chart datum is the water level surface serving as origin of depths displayed on a nautical chart and for reporting and predicting tide heights. A chart datum is generally derived from some tidal phase, in which case it is also known as a tidal datum. [ 1] Common chart datums are lowest astronomical tide (LAT) [ 1] and mean lower low water (MLLW).
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