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The Medieval and Early Modern Nautical Chart: Birth, Evolution and Use, Lisbon-based ERC-funded academic project. They develop and maintain the MEDEA-CHART Database, a sophisticated search engine and aggregator of early nautical charts data. Online version of Chart No.1 with "Symbols, Abbreviations and Terms" used in nautical charts
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 ...
A map of the McClellan–Kerr Arkansas River Navigation System. The McClellan–Kerr Arkansas River Navigation System (MKARNS) is part of the United States inland waterway system originating at the Tulsa Port of Catoosa and running southeast through Oklahoma and Arkansas to the Mississippi River. The total length of the system is 445 miles (716 ...
The actual position is shown on the chart. Each downloaded chart is cached on the device and can be used without internet connection. With internet connection the app checks if there is a newer version of the chart. The Apple location search finds the fitting map section. The app works worldwide. Navigation
Isogonic lines are also shown on aeronautical and nautical charts. Larger-scale local maps may indicate current local declination, often with the aid of a schematic diagram. Unless the area depicted is very small, declination may vary measurably over the extent of the map, so the data may be referred to a specific location on the map.
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.
T Map by SK Telecom; One Navi by KT corporation; Spain. Spanish official cartography website, including National Topographic Maps MTN50 (1:50,000 scale) and MTN25 (1:25,000 scale). SITPA-IDEAS, Asturias regional maps. Sweden. Eniro.se, also covers Denmark, Finland and Norway; Hitta.se; Thailand "Longdo Map", by Longdo.
The charts are stored in BSB format. "[The BSB file format] is a proprietary format of BSB Electronic Charts, LLP (bought by MapTech, Inc.)." [1] Image manipulation tools such as GDAL can read the image information, but there also is georeferenced data in the navigational charts.
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