GPS coordinates are received from the GPS location provider or from the network location provider if GPS is not available. The altitude is queried from open MapQuest API which yields in a more accurate result than receiving the altitude by GPS. · The U. S. Government no longer prints paper copies of its raster nautical charts. However, NOAA provides digital images of its raster charts to NOAA certified chart agents, from whom the public may purchase NOAA paper nautical charts.. Certified chart agents ensure that the charts are printed at the proper scale and quality to meet U.S. Coast Guard (USCG) chart carriage requirements. Download. on 5 votes. GE2KAP is a free program that enables you to create charts from GE and chart images. create charts from create a chart, select the.
Most commercial apps (on chart plotters) are not updateable via the web, and the cost of updates ( plus for some cartridges) makes the plotter updates not very feasible. So back to the apps, like OpenCPN and others. In the past I did terrain software, and even helped with user manual for MaxSea in a previous life. Many of the available apps have annual subscription fees or charge for charts, even sometimes NOAA charts. Good solution for iOS (both iPhone and iPad) and Android is SEAiq. There's a free version that does a great job of raster chart display, and the charts are downloaded for offline use. They work with the NOAA charts, so I would grab the full download of both types, put them on an SD card and have a play with it: All ENCs - MB zip file. All RNCs - 3GB zip file. I love OpenCPN on a laptop - I had the impression it's a bit fiddly on the phone. It'll be difficult to read in bright sunlight.
The Chart Downloader feature included with OpenCPN and above, will help you download, update and organize most of these free chart sources: NOAA Office of Coast Survey - free U.S. coasts, Puerto Rico, US Virgin Islands, the Hawaiian Island chain as far as Midway, American Samoa, Guam and the Northern Marianas Islands. NOAA has been producing the nation’s nautical charts for nearly two centuries. Specifically tailored to the needs of marine navigation, nautical charts delineate the shoreline and display important navigational information, such as water depths, prominent topographic features and landmarks, and aids to navigation. Marine Ways - Free Nautical Charts. Marine Ways Boating is the ultimate marine navigation and planning application! In this application you will gain access to: NOAA Electronic Navigational Charts (ENC) (NOAA's newest and most powerful electronic charting product). - NOAA classic charts (including Day, Red, Dusk, Night, and Gray versions).
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