How is global coverage provided by satellites in the maritime satellite service?
A. Four satellites in polar orbit.
B. Four satellites in geostationary orbit 35, 700 km above the equator.
C. Four satellites in geostationary orbit for each Inmarsat Service (Standard-F, Standard-B, Standard-C and Standard-M).
D. Through coordinated use of COSPAS SARSAT satellites.
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What does " DHSD " mean in GMDSS?
A. Duplex High Speed Data.
B. Department of Homeland Security in Dominica.
C. Digital High School.
Data Handling System Department.
The Inmarsat-C system allows___________.
A. two types of closed networks
B. data reporting networks, identified by a Data Reporting Network Identification (DNID) Code
C. EGC FleetNET networks, identified by an EGC Network Identification (ENID) Code
D. all of the above
What is meant by the characters " GA + " on an Inmarsat terminal?
A. General address (to all stations)
B. Go ahead.
C. The instruction to " give address”.
D. None of the above.
What will most likely happen if a satellite’s elevation becomes very low?
A. Changes in the elevation have no effect on communications.
B. Communications range through the satellite will likely be maximized.
Communications through the satellite will likely become difficult or impossible to establish.
D. This indicates that the vessel should effect a course change to minimize shadowing.
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