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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, ...

  3. Compass rose - Wikipedia

    en.wikipedia.org/wiki/Compass_rose

    A common compass rose as found on a nautical chart showing both true north (using a nautical star symbol) and magnetic north with magnetic variation.Also notice the correspondence between the 32-point rose (inner circle) and the modern 0–360° graduations.

  4. History of navigation - Wikipedia

    en.wikipedia.org/wiki/History_of_navigation

    It also analysed other sources of error, including the risk of parallax errors with some instruments; and faulty estimates of latitude and longitude on contemporary charts. In 1599–1600, Edward Wright's World Chart of 1599 was the first map under the Mercator projection drawn by an Englishman for English navigation.

  5. Portolan chart - Wikipedia

    en.wikipedia.org/wiki/Portolan_chart

    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 portolano , meaning "related to ports or harbors ", and which since at least the 17th century designates "a collection of sailing directions".

  6. Marine navigation - Wikipedia

    en.wikipedia.org/wiki/Marine_navigation

    Marine navigation is the art and science of steering a ship from a starting point (sailing) to a destination, efficiently and responsibly. It is an art because of the skill that the navigator must have to avoid the dangers of navigation, and it is a science because it is based on physical, mathematical, oceanographic, cartographic, astronomical ...

  7. Sea mark - Wikipedia

    en.wikipedia.org/wiki/Sea_mark

    Marks are shown on nautical charts, using symbols that indicate their colour, shape and light characteristic, and are usually identified by name or number. In a wider sense the phrase "sea mark" is often understood to include all types of landmarks, structures and devices that can be used to provide warning and guiding signs to mariners.

  8. 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 ...

  9. 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. OpenSeaMap is part of the ...

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