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  2. Nautical chart - Wikipedia

    en.wikipedia.org/wiki/Nautical_chart

    A nautical chart or hydrographic chart is a graphic representation of a sea region or water body and adjacent coasts or banks. Depending on the scale of the chart, it may show depths of water (bathymetry) and heights of land (topography), natural features of the seabed, details of the coastline, navigational hazards, locations of natural and ...

  3. Portolan chart - Wikipedia

    en.wikipedia.org/wiki/Portolan_chart

    The oldest original cartographic artifact in the Library of Congress: a portolan nautical chart of the Mediterranean Sea. Second quarter of the 14th century. Portolan charts are nautical charts, first made in the 13th century in the Mediterranean basin and later expanded to include other regions. The word portolan comes from the Italian ...

  4. General Bathymetric Chart of the Oceans - Wikipedia

    en.wikipedia.org/wiki/General_Bathymetric_Chart...

    The General Bathymetric Chart of the Oceans (GEBCO) is a publicly available bathymetric chart of the world's oceans. The project was conceived with the aim of preparing a global series of charts showing the general shape of the seafloor. Over the years it has become a reference map of the bathymetry of the world's oceans for scientists and others.

  5. Electronic navigational chart - Wikipedia

    en.wikipedia.org/wiki/Electronic_navigational_chart

    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 ...

  6. OpenSeaMap - Wikipedia

    en.wikipedia.org/wiki/OpenSeaMap

    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.

  7. Bowditch's American Practical Navigator - Wikipedia

    en.wikipedia.org/wiki/Bowditch's_American...

    Defense Mapping Agency Hydrographic Topographic Center (DMAHTC) The American Practical Navigator (colloquially often referred to as Bowditch), originally written by Nathaniel Bowditch, is an encyclopedia of navigation. It serves as a valuable handbook on oceanography and meteorology, and contains useful tables and a maritime glossary.