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Thus the chart coloration gave a clear indication to users as to whether they were using a chart with depths in fathoms or feet. While depths and heights were in metres, the nautical mile continued to be an international standard. Derived from the length of 1 minute of latitude, it is defined as 1852 metres. [12] [13] [14] [15]
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The NOTMAR web site also includes the historical Chart corrections and historical Sailing Direction corrections; as well, it provides access to downloadable Chart Patches, contains links to CHS’s Chart Number 1, instructions for applying Notices to mariners to manually update their paper charts, and other useful information. [citation needed]
English: :Title: Catalogue Description : Cover titleIncludes index Topics : Nurseries (Horticulture) Michigan Monroe Catalogs, Fruit trees Seedlings Catalogs, Fruit Catalogs, Plants, Ornamental Catalogs, Trees Seedlings Catalogs, Shrubs Catalogs
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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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maritime charts in paper or electronic form ("cartes électroniques de navigation" or ENC) signal books, containing audio and visual signals for ship-to-ship and ship-to-shore use, as well as details of French lighthouses; Radio signal-books, for radio-electric navigation aids and radio-communications