Ship movement service explained

thumb|Ship station dedicated to Ship movement service.

Ship movement service (short: SMS;  | also: ship movement radiocommunication service) is – according to Article 1.31 of the International Telecommunication Union's (ITU) Radio Regulations (RR) ^[1] – defined as «A safety service in the maritime mobile service other than a port operations service, between coast stations and ship stations, or between ship stations, in which messages are restricted to those relating to the movement of ships. Messages which are of a public correspondence nature shall be excluded from this service.»

See also:

See main article: Radiocommunication service.

Classification

The ITU Radio Regulations classifies this radiocommunication service as follows:
Mobile-satellite service (article 1.25)

• Maritime mobile service (article 1.28)
  • Maritime mobile-satellite service (article 1.29)
  • Port operations service (article 1.30)
  • Ship movement service

References / sources

1. ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.31, definition: ship movement service / ship movement radiocommunication service

• International Telecommunication Union (ITU)