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  2. Under keel clearance - Wikipedia

    en.wikipedia.org/wiki/Under_keel_clearance

    At a basic level, it is typically calculated in metres using the formula: [1] UKC = Charted Depth − Draft-/+ Height of Tide. Ship masters and deck officers can obtain the depth of water from Electronic navigational charts. [5] More dynamic or advanced calculations include safety margins for manoeuvring effects and squat. [7]

  3. Vincenty's formulae - Wikipedia

    en.wikipedia.org/wiki/Vincenty's_formulae

    difference in longitude of two points; λ: Difference in longitude of the points on the auxiliary sphere; α 1, α 2: forward azimuths at the points; α: forward azimuth of the geodesic at the equator, if it were extended that far; s: ellipsoidal distance between the two points; σ: angular separation between points: σ 1

  4. Hypsometry - Wikipedia

    en.wikipedia.org/wiki/Hypsometry

    Hypsometry (from Ancient Greek ὕψος (húpsos) 'height' and μέτρον (métron) 'measure') [1] [2] is the measurement of the elevation and depth of features of Earth's surface relative to mean sea level. [3] On Earth, the elevations can take on either positive or negative (below sea level) values.

  5. Geography of Kazakhstan - Wikipedia

    en.wikipedia.org/wiki/Geography_of_Kazakhstan

    Kazakhstan is located in Central Asia, with a small portion in Eastern Europe. [1] With an area of about 2,724,900 square kilometers (1,052,100 sq mi) Kazakhstan is more than twice the combined size of the other four Central Asian states and 60% larger than Alaska .

  6. Vertical position - Wikipedia

    en.wikipedia.org/wiki/Vertical_position

    altitude: "height where the chosen reference surface is mean sea level" [1] The International Civil Aviation Organization (ICAO) offers similar definitions: [ 2 ] altitude : "the vertical distance of a level, a point or an object considered as a point, measured from the mean sea level (MSL);" [ 2 ]

  7. Bathymetric chart - Wikipedia

    en.wikipedia.org/wiki/Bathymetric_chart

    Bathymetric charts showcase depth using a series of lines and points at equal intervals, called depth contours or isobaths (a type of contour line). A closed shape with increasingly smaller shapes inside of it can indicate an ocean trench or a seamount, or underwater mountain, depending on whether the depths increase or decrease going inward.

  8. Semipalatinsk Test Site - Wikipedia

    en.wikipedia.org/wiki/Semipalatinsk_Test_Site

    It is located in Zhanasemey District, Abai Region, Kazakhstan, south of the valley of the Irtysh River. The test site was part of the former Kazakh SSR. The scientific buildings for the test site were located around 150 km (93 mi) west of the town of Semipalatinsk, later renamed Semey, near the border of East Kazakhstan Region and Pavlodar Region.

  9. Altitude diving - Wikipedia

    en.wikipedia.org/wiki/Altitude_diving

    The hydrostatic pressure increases in the same proportion to depth, but the atmospheric pressure varies with altitude. The lower initial pressure at the surface means that a mass of gas occupying a given volume will be compressed more than the same volume at sea level for the same depth. The formula for Boyle's law applies: P 1 V 1 = P 2 V 2 or ...