FleetBroadband is maritime satellite internet, telephony, SMS texting, and ISDN network for ocean-going vessels using portable domed terminal antennas.
These antennas and corresponding indoor controllers are used to connect phones and laptop computers from sailing vessels to the Internet.
All antennas require line-of-sight (LOS) to one of three geosynchronous orbit satellites, thus allowing the terminal to be used on land as well.
The FleetBroadband network was developed by Inmarsat and is composed of three geosynchronous orbiting satellites known as I-4s that allow contiguous global coverage, except for the poles.
Line-of-sight to the I-4 satellites is required for connectivity, which can be achieved even in rough rolling seas.