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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 With internet connection the app checks if there is a newer version of the chart.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
The Office of Coast Survey is responsible for preparing and maintaining over a thousand nautical charts covering the exclusive economic zone off the coast of the United States and its territories, extending 200 nautical miles (370 km; 230 mi) offshore and covering a total area of 3,400,000 square nautical miles (12,000,000 km 2; 4,500,000 sq mi ...
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
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.
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 ...
Each serves to allocate responsibility for sending Marine and Safety Information (navigational warnings) to ships at sea, as part of the Global Maritime Distress and Safety System (GMDSS). A list of Navtex stations. Please improve this list by determining the exact location of the transmission antenna! Station broadcast ranges are in nautical ...
The national chart folio consists of 950 paper charts, 541 S-57 vector Electronic Navigation Charts and 651 raster charts in the BSB format. CHS produces and maintains seven volumes of Tides and Water Levels books, 25 Sailing Directions books, and prints and distributes a number of publications such as the Annual Notices to Mariners and Radio ...
The oldest sailing directions, dating back to the middle ages, descended directly from the Greek and Roman periplii: in classical times, in the absence of real nautical charts, navigation was carried out using books that described the coast, not necessarily intended for navigation, but more often consisting of reports of previous voyages, or celebrations of the deeds of leaders or rulers.