GMDSS: Element 7

1. A Both Inmarsat-B and Inmarsat-C units are subject to shadowing effects due to their omni-directional antennas.
2. B Both Inmarsat-B and Inmarsat-C units are subject to shadowing effects, but Inmarsat-B units have directional antennas.
3. C Both Inmarsat-B and Inmarsat-C units are subject to shadowing effects, but Inmarsat-C units have directional antennas.
4. D Both Inmarsat-B and Inmarsat-C units are subject to shadowing effects, due to their directional antennas.

Tip: press A-D to answer