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  2. Comparison of free off-line satellite navigation software

    en.wikipedia.org/wiki/Comparison_of_free_off...

    intended for marine navigation Magic Earth General Magic B.V. Smartphone, tablet Android, iOS? Yes (OpenStreetMap data), yes No Free OSM maps intended for car navigation, hiking and biking MapFactor [11] MapFactor, s.r.o., Czech Republic smartphone, tablet, laptop (online), tablet PC, car navigation

  3. Satellite navigation software - Wikipedia

    en.wikipedia.org/wiki/Satellite_navigation_software

    Satellite navigation software is most commonly used on mobile devices, particularly mobile phones, to provide the positioning functionality. However, relying exclusively on GNSS data is not accurate enough due to the limitations of GNSS services, To address this, Assisted GNSS (A-GNSS) is used instead.

  4. Google Earth - Wikipedia

    en.wikipedia.org/wiki/Google_Earth

    Google Earth is a web and computer program that renders a 3D representation of Earth based primarily on satellite imagery.The program maps the Earth by superimposing satellite images, aerial photography, and GIS data onto a 3D globe, allowing users to see cities and landscapes from various angles.

  5. Nautical chart - Wikipedia

    en.wikipedia.org/wiki/Nautical_chart

    Depending on the scale of the chart, it may show depths of water and heights of land , natural features of the seabed, details of the coastline, navigational hazards, locations of natural and human-made aids to navigation, information on tides and currents, local details of the Earth's magnetic field, and human-made structures such as harbours ...

  6. Satellite navigation - Wikipedia

    en.wikipedia.org/wiki/Satellite_navigation

    GNSS systems that provide enhanced accuracy and integrity monitoring usable for civil navigation are classified as follows: [5] GNSS-1 is the first generation system and is the combination of existing satellite navigation systems (GPS and GLONASS), with Satellite Based Augmentation Systems (SBAS) or Ground Based Augmentation Systems (GBAS). [5]

  7. Longitude by chronometer - Wikipedia

    en.wikipedia.org/wiki/Longitude_by_chronometer

    Longitude by chronometer is a method, in navigation, of determining longitude using a marine chronometer, which was developed by John Harrison during the first half of the eighteenth century. It is an astronomical method of calculating the longitude at which a position line, drawn from a sight by sextant of any celestial body, crosses the ...

  8. Nautical mile - Wikipedia

    en.wikipedia.org/wiki/Nautical_mile

    A nautical mile is a unit of length used in air, marine, and space navigation, and for the definition of territorial waters. [2] [3] [4] Historically, it was defined as the meridian arc length corresponding to one minute (⁠ 1 / 60 ⁠ of a degree) of latitude at the equator, so that Earth's polar circumference is very near to 21,600 nautical miles (that is 60 minutes × 360 degrees).

  9. Mercator projection - Wikipedia

    en.wikipedia.org/wiki/Mercator_projection

    The Mercator projection was designed for use in marine navigation because of its unique property of representing any course of constant bearing as a straight segment. Such a course, known as a rhumb (alternately called a rhumb line or loxodrome) is preferred in marine navigation because ships can sail in a constant compass direction. This ...

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