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Safety - Inmarsat is a global satellite network providing a full-range of mobile satellite communication solutions for users in the maritime, land and aeronautical applications in both the private and public sector.

Inmarsat is a global provider of mobile satellite communications. Providing voice, fax and high-speed data services almost anywhere on the planet. Provided on land, at sea and in the air through its owned and operated global satellite network.

Inmarsat plays an important role in providing both safety and communications to the maritime industry. Inmarsat offers safety and communication services and solutions to the Leisure, Fishing, Merchant and Government maritime sectors.

Inmarsat offers a wide range of fixed, portable, maritime and mobile satellite solutions. These include voice, fax, broadband data and handheld phone services.


Inmarsat is the satellite communications backbone of GMDSS (Global Maritime Distress and Safety System) Since its inception by IMO (International Maritime Organization) Inmarsat has been the underlying reliable satellite safety communication network to the global maritime community.
It enables vessels equipped with GMDSS-compliant Inmarsat terminals to quickly send a distress alert through a Dedicated Distress Button (DDB). Once pressed, the highest priority is granted the alert and is automatically routed to the appropriate on-shore Maritime Rescue Co-ordination Center (MRCC). Vessels also have the option to send detailed distress messages, which are also prioritized.

Inmarsat C

The Inmarsat-C system provides data messaging services through the use of small lightweight terminals. These units come in fixed, mobile, transportable, maritime and aeronautical configurations. All configurations employ omni-directional antennas.
Inmarsat-C supports tow-way text and data messaging, data-reporting and fleet broadcast communications at a data rate of 600 bits/sec.

GMDSS compliance. Inmarsat-C is a cost-effective solution for vessels over 300 gross tons which must comply with the International Maritime Organization’s Global Maritime Distress and Safety System (GMDSS) requirements.

Inmarsat Fleet One

Inmarsat’s Fleet One service was designed for the seasonal or occasional low data usage customer when they travel outside of their VHF or GSM coverage areas.

Inmarsat FleetBroadband

  • FB250 - Standard IP to 284kbps and Streaming IP
  • FB500 - Standard IP to 432kbps and Streaming IP up to 256kbps

Fleet 77

Fleet 77 End-of-Life (EOL) at End of 2020
Inmarsat Options for Fleet 77 users:
Fleet One
FleetBroadband 250 or 500
Fleet Xpress

Fleet 77 Replaced by Inmarat's Fleet Safety Services

Inmarsat Fleet F77, service providing the high quality and speed of a full 64 kbit/s Mobile ISDN service and the flexibility of the Inmarsat Mobile Packet Data Service, where users are charged for the amount of information sent and received rather than the time for which they are connected.


Inmarsat Fleet F77 is also equipped to meet the latest distress and safety specifications of the Global Maritime Distress and Safety System (GMDSS). Through 4-stage voice pre-emption and prioritization, Inmarsat Fleet F77 supports the accreditation of vessels' systems and ensures high priority distress and safety needs are met.

Fleet Xpress

Inmarsat’s Fleet Xpress brings the power of broadband with increased bandwidth globally through one satellite network across the world’s oceans and seas.


What We Do

We Provide Global, Regional, Broadband and lease channel satellite services. From Regional voice, data and fax capabilities to Inmarsat and High Speed Data and VSAT capabilities. We also provide SCADA, RFID, Monitoring, Control and Security systems and services.

A full range communication provider, with multi-network mobile satellite equipment and services. Our diverse portfolio of communications services are available to maritime, land and aeronautical customers on a global basis. Our range of services, close associations with premium satellite service providers throughout the world offers the widest range of service and equipment options to our customers worldwide.

H.M.S. Telecom, LLC is proud to provide equipment, sales and service that is prompt, professional and cost effective. Through Our extensive network of premium partners, offering the widest array of custom solutions to your needs on a global basis. Your business anywhere, anytime.


Satellite Communications, Telecommunications, Control(s), Business, VSAT, SCADA, Mobile Satellite, RFID, Automation, Marine Satellite, VoIP, Routers, Business Continuity, Hosted PBX, Voice, Data Services, Video, Inventory Control, Distance Learning, and Remote Monitoring

Our Customers

Our customers range from leisure yachts cruising the waters of the Mediterranean to oil super tankers sailing the seven seas; farmers tilling their soil in Argentina, Canada, Michigan or China to scientist in the Antarctic, or explorers on the Amazon, a State Governor and the tool pusher on a oil rig in the Gulf of Mexico, South America, Africa, Middle-East, Asia, and beyond.


What's Next

Contact Us To Learn More About The Possibilities, We Can Bring To Your Company. Unique Solutions To Your Unique Requirements.