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Navigation Safety

Morsviazsputnik offers the complete portfolio of telecommunication services for the transportation enterprises, legal entities and individuals. 

The company provides Inmarsat mobile satellite communications services including services for navigation safety. 


The Global Maritime Disaster and Security Communications System (GMDSS) was established by the International Maritime Organization (IMO) and is designed to save people in distress at sea.

The components of GMDSS are Inmarsat and Iridium mobile satellite systems, which provide disaster information from ships to Rescue Coordination centers around the world. Inmarsat SafetyNET/SafetyNETII, RescueNET and Iridium SafetyCast services are used to transfer information about the safety of navigation to ships at sea, including navigation warnings and meteorological reports.

The use of mobile satellite systems for maritime safety is regulated by the International Mobile Satellite Organization (IMSO).

Inmarsat SafetyNETII and Iridium SafetyCast services meet the requirements of the Global Maritime Distress and Safety (GMDSS) (IMO circulars MSC.1/Circ.1611. MSC.1/Circ.1613), but their launch in the Russian Federation is currently limited for the following reasons:

Inmarsat service SafetyNETII using Fleet Safety provides IBM transmission only within the coverage area of ​ ​ Inmarsat I-4 MEAS satellite, gap filling and expansion of the coverage zone is planned  for 2021 with the launch of new satellites;

There is no Inmarsat FleetBroadband ship equipment that complies with the requirements of the GMDSS and has the type approval from the Ministry of Transport of Russia;

Iridium SafetyCast service provides a global coverage area, but today there is no ship equipment approved by the Ministry of Transport of Russia either.

Inmarsat Standards approved for use in GMDSSS

Inmarsat C

Inmarsat C - Inmarsat standard, commissioned in 1991. Provides low-speed, two-way communication based on Store-and-Forward.

Inmarsat C, Mini C satellite terminals are compact and can be installed on almost any ship, they allow packet data transmission at a speed of 600 bps and provide the following capabilities:

  • messaging (ship to ship),
  • sending messages to e-mail (ship-shore, shore-ship),
  • sending SMS messages to GSM mobile phones,
  • sending messages to the PSDN mailbox,
  • faxing (ship-shore),
  • sending an extended group call to Inmarsat-C terminals,
  • transmission of telex messages,
  • sending geographical coordinates, course, speed (Data reporting),
  • sending and receiving distress signals (Distress).

To ensure navigation safety, Inmarsat-C and Mini-C terminals are equipped with an integrated Global Navigation Satellite System (GNSS) receiver, which provides automatic location of the terminal and reporting, in case a distress signal is activated. The reports transmitted contain data on the vessel geographical coordinates, course and speed.

Please read more


Inmarsat FleetBroadband (FBB)

FleetBroadband is a broadband satellite communication standard, which provides data transmission in IP networks at speeds up to 432 kbps, provides subscribers with telephone (up to 9 channels) and facsimile communication, ISDN, sending/receiving SMS messages, data transmission with guaranteed speeds up to 256 kbps. To ensure navigation safety, FleetBroadBand provides a free emergency service with the Maritime Rescue  Coordination Centers at 505.

The use of FleetBroadband terminals as GMDSS equipment is currently possible only within MEAS coverage area of Inmarsat 4th generation satellites.

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Inmarsat FleetOne

FleetOne is an alternative or an addition to Inmarsat FBB service.

FleetOne provides single-channel voice communication, sending/receiving SMS messages, data transmission at speeds up to 100 kbps and free emergency communication at 505.

The main features of the FleetOne are the possibility of use on any type vessels, low traffic costs, a flexible rate plan with a minimum contract period of 1 month and the possibility of deactivating/activating services at any time.

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FleetOne Coastal Coverage zone


FleetOne Global Coverage zone

Transmission of information on navigation safety to vessels

IBM/MSI - information of navigation safety is transmitted to vessels through Inmarsat - SafetyNET/SafetyNETII, RescueNET and Iridium - SafetyCast services.

IBM information includes:

  • Meteorological warnings
  • Navigation warnings
  • Information on search and rescue operations
  • Ice vonditions
  • Weather forecasts
  • Coastal to maritime distress signals

The following areas of NAVAREA/METAREA - XIII, XX and XXI are included in the area of responsibility of the Russian Federation for IBM information transfer.



Currently, the following IBM suppliers (IMO Circular COMSAR.1/Circ.58/Rev.1 from 31.10.2018)  are officially declared by the Russian Federation to IMO:


  • UNiO of the Ministry of Defense of Russia - navigation information;
  • FSBI "AANIA" (Roshydromet) - weather information.
  • FSUE Rosmorport - navigation information;
  • FSBI "AANIA" (Roshydromet) - weather information.

The transfer of IBM to NAVAREA/METAREA is carried out by IBM suppliers according to the schedule in accordance with the relevant IMO resolutions.

Services SafetyNET/SafetyNETII


SafetyNET has been in operation since 1999 and provides navigation safety information (IBM) to NAVAREA and METAREA. IBM is delivered using EGC multicast service via Inmarsat satellite channels.

In SafetyNET  IBM information is transmitted by the Network Coordinating Station (NCS) through any Inmarsat-C onshore land earth station (LES) serving the required NAVAREA/METAREA regions, while, as a rule, two Inmarsat-C LESes - the main and standby - are used to transmit the IBM. For IBM delivery to the regions under the ​responsibility of the Russian Federation (XIII, XX and XXI), the main LES is the Russian LES Nudol, the operation of which is provided by Morsviazsputnik.


SafetyNET Communication diagram:


SafetyNET II 

SafetyNET II was developed based on modern telecommunication technologies, taking into account the possibility of using Inmarsat FleetBroadband ship terminals as GMDSS equipment.

IBM is sent using a WEB interface, the information is processed on a special Inmarsat server - Maritime Safety Server, after which the SBM is transmitted to the NCS through 4th generation satellites.

An important advantage of SafetyNET II is the ability to simultaneously sending IBM to both Inmarsat-C (Mini-C) and FleetBroadband terminals.


SafetyNET II Communication diagram:


Iridium Satellite System for GMDSS

Iridium mobile satellite communication system was approved as a component of the GMSSB in May 2018.

In December 2019, Iridium Communications Inc. announced the first seven companies in the world that were granted the right to provide GMDSS services.

These companies - Arion Communications, AST, Marlink, Morsviazsputnik (Marsat), NSSLGlobal, Satcom Global and Speedcast - were the first in the world to provide global satellite GMDSS- Iridium service for maritime vessels.

Currently,  Morsviazsputnik together with Iridium are testing SafetyCast service to verify the transfer of IBM to NAVAREA/METAREA areas which are under ​responsibility of the Russian Federation. Based on the testing results a decision will be made on the possibility of SafetyCast service using by the Russian IBM suppliers.

You can find current rates for Inmarsat III services here.

***Information update December 2020