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 Radio regulation refers to the regulation and licensing of radio in international law, by individual governments, and by municipalities. International regulation The International Telecommunication Union (ITU) is a specialized agency of the Unit ...

(RR) ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.31, definition: ''ship movement service / ship movement radiocommunication service'' – defined as «''A safety service in the

maritime mobile service A maritime mobile service (also MMS or maritime mobile radiocommunication service) is a mobile service between coast stations and ship stations, or between ship stations, or between associated on-board communication stations. The service may also ...

other than a

port operations service 290px, Ship station dedicated to ''port operation service''. Port operations service (short: POS; | also: port operations radiocommunication service') is – according to ''Article 1.30'' of the International Telecommunication Union's ...

, between

coast station A coast (or coastal) radio station (short: coast station) is an on-shore maritime radio station which may monitor radio distress frequencies and relays ship-to-ship and ship-to-land communications. A coast station (also: '' coast radio station ...

s and

ship station A ship station (or ship radio station) is a radio station located on board a sea vessel. The ITU Radio Regulations define it as "A mobile station in the maritime mobile service located on board a vessel which is not permanently moored, other than a ...

s, 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:

Classification

The ITU Radio Regulations classifies this radiocommunication service as follows:

Mobile-satellite service Mobile-satellite service (MSS, or mobile-satellite radiocommunication service) is – according to Article 1.25 of the International Telecommunication Union's Radio Regulations – "A radiocommunication service * between mobile earth stations and ...

(article 1.25) *

Maritime mobile service A maritime mobile service (also MMS or maritime mobile radiocommunication service) is a mobile service between coast stations and ship stations, or between ship stations, or between associated on-board communication stations. The service may also ...

(article 1.28) **

Maritime mobile-satellite service Maritime mobile-satellite service (MMSS, or maritime mobile-satellite radiocommunication service) is – according to Article 1.29 of the International Telecommunication Union's Radio Regulations (RR) – "A mobile-satellite service in which mobil ...

(article 1.29) **

Port operations service 290px, Ship station dedicated to ''port operation service''. Port operations service (short: POS; | also: port operations radiocommunication service') is – according to ''Article 1.30'' of the International Telecommunication Union's ...

(article 1.30) **Ship movement service

References / sources

International Telecommunication Union (ITU)
Mobile services ITU Maritime communication {{radio-comm-stub