Maritime radionavigation service
# Maritime radionavigation service

Maritime radionavigation service (short: MRNS) is – according to Article 1.44 of the International Telecommunication Union's (ITU) Radio Regulations (RR) – defined as "A radionavigation service intended for the benefit and for the safe operation of ships."

This service is a so-called safety-of-life service, must be protected for interferences, and is essential part of navigation.

## Classification

This radiocommunication service is classified in accordance with ITU Radio Regulations (article 1) as follows:

Radiodetermination service (article 1.40)

* Radionavigation service (article 1.42)
   * Radionavigation-satellite service (article 1.43)
   * Maritime radionavigation service
      * Maritime radionavigation-satellite service (article 1.45)
   * Aeronautical radionavigation service (article 1.46)
      * Aeronautical radionavigation-satellite service (article 1.47)

## Radio stations

In general the maritime radionavigation service distinguishes radio stations as follows:

* Radionavigation mobile stations (article 1.87)
* Radionavigation land stations (article 1.88)
