Fleet Broadband

FleetBroadband is Inmarsat’s most proven maritime satellite communications service that provides reliable voice and data services through the use of a compact antenna. It is based on the I-4 satellite system backed up by an extensive ground-based network, resulting in 99.9% network availability. The reliability of the L-band technology makes it ideal as a backup service to the high-speed Fleet Xpress, keeping connections alive and the data flowing back and forth no matter what happens.

Thousands of vessels of all sizes and in all maritime sectors trust FleetBroadband for operational communications, including their email and phone.

Choose the best fit for your vessel

There are a number of terminals, smart boxes, applications, and value-added services to choose from: 

FB150 delivers global voice, IP data up to 150kbps, and SMS texting to smaller vessels with less need for high bandwidth applications.

The above-deck and below-deck units are highly compact and easy to install, with antennas from 22.1cm x 29.1cm, weighing 2.5kg.

For larger vessels, such as coastal merchant and fishing fleets, FB250 offers faster data speeds of up to 250kbps and live streaming for applications like video conferencing, plus up to nine telephone lines with Fleet Broadband Multivoice for crystal-clear voice calls.

FB500 is our fastest FleetBroadband service, delivering always-on connection speeds of up to 432kbps and streaming rates up to 256kbps for multiple user operational and crew communications, anywhere at sea, in any conditions.


Key features

Standard IP data

Always-on data services for internet and email, and guaranteed rates for video conferencing and database syncing.

Satellite voice services

Voicemail and various enhanced call management options, with access to up to nine telephone lines and support for multi-voice.

Crew calling & GSM calls

GSM over FB250 and FB500 allows users to make and receive calls, and also to send and receive SMS texts using the pre-paid SIM on their devices.


505 Emergency Calling puts vessels directly in contact with a Maritime Rescue Coordination Center (MRCC). Free of charge for distress calls.