Maritime mobile-satellite service (MMSS, or maritime mobile-satellite radiocommunication service) is – according to Article 1.29 of the

International Telecommunication Union The International Telecommunication Union is a specialized agency of the United Nations responsible for many matters related to information and communication technologies. It was established on 17 May 1865 as the International Telegraph Unio ...

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) – "A

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 an ...

in which

mobile earth station Mobile earth station (also: ''mobile earth radio station'') is – according to ''Article 1.68'' of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR)ITU Radio Regulations, Section IV. Radio Stations and Systems – Arti ...

s are located on board

ship A ship is a large watercraft that travels the world's oceans and other sufficiently deep waterways, carrying cargo or passengers, or in support of specialized missions, such as defense, research, and fishing. Ships are generally distinguished ...

survival craft station Survival craft station (also: survival craft radio station) is – according to ''Article 1.65'' of the International Telecommunication Union´s (ITU) radio regulationsITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.6 ...

s and emergency position-indicating radiobeacon stations may also participate in this service", in addition to serving as navigation systems.

Classification

This radiocommunication service is classified in accordance with ''ITU Radio Regulations'' (article 1) as follows:
Mobile service * Maritime mobile service (article 1.28) **Maritime mobile-satellite service **

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 (article 1.31)

Frequency allocation

The allocation of radio frequencies is provided according to ''Article 5'' of the ITU Radio Regulations (edition 2012).''ITU Radio Regulations, CHAPTER II – Frequencies, ARTICLE 5 Frequency allocations, Section IV – Table of Frequency Allocations'' In order to improve harmonisation in spectrum utilisation, the majority of service-allocations stipulated in this document were incorporated in national Tables of Frequency Allocations and Utilisations which is with-in the responsibility of the appropriate national administration. The allocation might be primary, secondary, exclusive, and shared. *primary allocation: is indicated by writing in capital letters *secondary allocation: is indicated by small letters *exclusive or shared utilization: is within the responsibility of administrations ; Example of

frequency allocation Frequency allocation (or spectrum allocation or spectrum management) is the allocation and regulation of the electromagnetic spectrum into radio frequency bands, normally done by governments in most countries. Because radio propagation does ...

: ;Selection of MMSS stations Inmarsat-3.gif, Space radio station, Inmarsat-3 satellite Néra fr.jpg,

Earth station A ground station, Earth station, or Earth terminal is a terrestrial radio station designed for extraplanetary telecommunication with spacecraft (constituting part of the ground segment of the spacecraft system), or reception of radio waves fr ...

, telephone terminal Voilier inm.jpg, Inmarsat aerial (stern of the yacht) US Navy 070124-N-4965F-004 Electronics Technician 2nd Class Joseph Melchor, assigned to the Arleigh Burke-class guided-missile destroyer USS Paul Hamilton (DDG 60), climbs the mast of the Paul Hamilton to perform pre-deployment.jpg, Inmarsat aerial of the US Navy Gruppenbild 05.jpg, Hand-held radios of the MMSS Satellite phone.jpg, Inmarsat satellite telephone

References / sources

Mobile services ITU Maritime communication {{radio-comm-stub

Classification

Frequency allocation

See also

References / sources