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  2. Distances Between Ports - Wikipedia

    en.wikipedia.org/wiki/Distances_Between_Ports

    Distances Between Ports (PUB 151) is a publication that lists the distances between major ports. Reciprocal distances between two ports may differ due to the different routes of currents and climatic conditions chosen.

  3. 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).

  4. Nautical chart - Wikipedia

    en.wikipedia.org/wiki/Nautical_chart

    To keep the projection conformal, the projection increases the displayed distance between lines of latitude (north–south distances) in proportion; thus a square is shown as a square everywhere on the chart, but a square on the Arctic Circle appears much bigger than a square of the same size at the equator.

  5. List of nautical units of measurement - Wikipedia

    en.wikipedia.org/wiki/List_of_nautical_units_of...

    Nautical mile: Length: Rhumb: Angle: The angle between two successive points of the thirty-two point compass (11 degrees 15 minutes) (rare) [1] Shackle: Length: Before 1949, 12.5 fathoms; later 15 fathoms. [2] Toise: Length: Toise was also used for measures of area and volume Twenty-foot equivalent unit or TEU: Volume: Used in connection with ...

  6. Maritime geography - Wikipedia

    en.wikipedia.org/wiki/Maritime_geography

    The green water environment extends from the outer edge of the brown-water layer past any continental shelves, archipelagos and islands; perhaps a few hundred miles from shore. It is the most important maritime arena, including most coastal traffic and territorial waters, in which are found the great majority of a nation's maritime police ...

  7. Territorial waters - Wikipedia

    en.wikipedia.org/wiki/Territorial_waters

    Normally, the baseline is the low-water line along the coast as marked on large-scale charts that the coastal state recognizes. This is either the low-water mark closest to the shore or an unlimited distance from permanently exposed land, provided that some portion of elevations exposed at low tide but covered at high tide (such as mud flats) is within 3 nautical miles (5.6 kilometres; 3 + 1 ...

  8. English Channel - Wikipedia

    en.wikipedia.org/wiki/English_Channel

    A brisk and regular trade began between ports in Roman Gaul and those in Britain. ... in use until 1859. 21 nautical miles distance needed 24 + 1 n. miles of cable ...

  9. Maritime boundary - Wikipedia

    en.wikipedia.org/wiki/Maritime_boundary

    Features, limits and zones. A maritime boundary is a conceptual division of Earth's water surface areas using physiographical or geopolitical criteria. As such, it usually bounds areas of exclusive national rights over mineral and biological resources, [1] encompassing maritime features, limits and zones. [2]