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  1. In geodesy, surveying, hydrography and navigation, vertical datum or altimetric datum is a reference coordinate surface used for vertical positions, such as the elevations of Earth-bound features ( terrain, bathymetry, water level, and built structures) and altitudes of satellite orbits and in aviation . In planetary science, vertical datums ...

  2. An der deutschen Nordseeküste ist es um gut einen halben Tidenhub niedriger als Normalhöhennull (NHN), was z. B. in Cuxhaven 2,1 m ausmacht. An der Küste der Ostsee stimmen Normalhöhennull und Seekartennull überein. Früher war das Seekartennull auch in der deutschen Nordsee als das örtliche mittlere Springniedrigwasser (MSpNW) definiert.

  3. Normalnull n ( strong, genitive Normalnulls, no plural) The mean altitude of sea level . Synonym: NN. 1343 Meter über Normalnull ― (please add an English translation of this usage example)

  4. Normal heights (symbol or ; SI unit metre, m) is a type of height above sea level introduced by Mikhail Molodenskii . The normal height of a point is computed as the quotient of a point's geopotential number (i.e. its geopotential difference with that of sea level), by the average, normal gravity computed along the plumb line of the point.

  5. The Wasserkuppe, the highest mountain in Hesse. This list of mountains and hills of Hesse contains a selection of the significant mountain and hills located in the German federal state of Hesse sorted in each case by their height in metres above sea level (Normalhöhennull or NHN).

  6. 196 metres (643 ft) above Normalhöhennull: Length: about 5.5 kilometres (3.4 mi) Basin features; Progression: Hahle→ Rhume→ Leine→ Aller→ Weser→ North Sea: Tributaries • left: Finkgraben, brook from Berlingerode

  7. Usage. This template mirrors the one on German Wikipedia called de:Vorlage:Höhe for interpreting height data based on a range of systems. It is currently being used on Simple Wikipedia to assist translation of hundreds of articles, e.g. on railway lines, mountains, rivers and other geographical features that record the heights based on standard German, Austrian or Swiss reference points.