Editing Radio navigation (section)

===Maritime===
[[File:Rantum, LORAN-C Mast mit Abspannseilen.JPG|thumb| 270px| ''Radionavigation land station'' ([[LORAN]]-C-transmitter Rantum)]] [[File:Kolster radio compass.jpg|thumb|270px| ''Radionavigation  mobile station'' [[radio direction finder|(RDF)]] 1930]]

'''Maritime radionavigation service''' (short: '''MRNS''') is – according to ''Article 1.44'' of the [[International Telecommunication Union|International Telecommunication Union's]] (ITU) [[ITU Radio Regulations|Radio Regulations]] (RR)<ref>ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.44, definition: ''maritime radionavigation service''</ref> – defined as "''A radionavigation service intended for the benefit and for the safe operation of ships''."

This service is a so-called [[Safety service|safety-of-life service]], must be protected for [[Interference (communication)|interferences]], and is essential part of [[navigation]].
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