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An Electronic Navigational Chart (ENC) is a digital representation of a real-world geographical area for the purpose of Marine navigation.Real-world objects and areas of navigational significance, or to a lesser degree - informational significance, are portrayed through Raster facsimiles of traditional paper charts; or more commonly through vector images, which are able to scale their relative ...
OpenSeaMap is a software project collecting freely usable nautical information and geospatial data to create a worldwide nautical chart. This chart is available on the OpenSeaMap website, and can also be downloaded for use as an electronic chart for offline applications. [1] The project is part of OpenStreetMap. OpenSeaMap is part of the ...
Online version of Chart No.1 with "Symbols, Abbreviations and Terms" used in nautical charts; Portolan Chart of Gabriel de Vallseca, 1439; The short film "Reading Charts (April 6, 1999)" is available for free viewing and download at the Internet Archive. Nautical charts available online (Nautical Free) Online Nautical Charts Viewer
Navigation that follows a rhumb line — that is, all meridians are cut at the same angle. On a nautical chart following the Mercator projection, a loxodromic is represented by a straight line. This type of navigation is useful for not too long distances, as it allows the course to remain steady, [16] but it does not offer the shortest distance.
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Turn-by-turn navigation is a feature of some satellite navigation devices where directions for a selected route are continually presented to the user in the form of spoken or visual instructions. [1] The system keeps the user up-to-date about the best route to the destination, and is often updated according to changing factors such as traffic ...
A common example of a moving map display today is the map display on a smart phone or tablet screen, with an app using GPS to determine the device's current position and display it on map data from the device's internal storage or from the Internet in real time. This use of phones and tablets has expanded very rapidly for navigation in car ...
In the development of hydrographic services, shipping organizations played a part, but the major players were the naval powers. Recognizing hydrographic information was a military advantage these naval organizations, usually under the direction of a "Hydrographer," utilized the expertise of naval officers in collecting hydrographic data that was incorporated into the navy's collection.