Can I use a Passive/directional antenna with a IsatDOCK Marine?

Inmarsat passive/directional antennas are best suited for fixed installations like buildings, homes, and the likes. The Inmarsat passive/directional antenna is required to permanently point directly to the nearest Inmarsat satellite.  It is not suitable for mobile applications.

If you wish to use an Inmarsat satellite setup on a moving vehicle or vessel, consider an active/omnidirectional antenna.