GMDSS. General. Test 4

GMDSS: Can MSI messages be received by equipment other than a NAVTEX receiver?

Yes, on EGC (SafetyNet) and MF/HF Radio telex
Yes, but only on Inmarsat systems
Yes, on a 2182 kHz watch receiver
No, only on a NAVTEX receiver

GMDSS: You receive a NAVTEX message containing the following: A Lat 60.03.9N/Long 022.09.4E Probability 67. B Lat 61.47.5N/Long 010.11.7E Probability 33. No Identification. What does this message mean?

Two (A and B) Cospas Sarsat satellites have taken bearings of an EPIRB transmitting on 406 MHz.
Two (A and B) Inmarsat satellites have taken bearings of an Inmarsat L-band EPIRB
Two (A and B) Cospas Sarsat satellites have taken bearings of an EPIRB transmitting on 121.5 MHz
Two (A and B) Inmarsat satellites have taken bearings of an EBIRB transmitting on 406 MHz

GMDSS: Why are the VHF antennas much smaller than MF/HF antennas?

Because VHF has a very short range
Because VHF is operating on high frequencies and thereby has a long wave-length
Because VHF is operating on high frequencies and thereby has a short wave-length
Because the VHF signal is transmitted in G3E (phase modulation)

Which of the following types/sizes of vessels in international trade do not have to be fitted with a radiotelephone station?

Cargo ships of 300 - 1600 tons gross
Passenger ships of less than 100 tons gross
Passenger ships carrying less than 36 passengers
Cargo ships below 300 tons gross

In maritime radio traffic sea area A2 is considered a sea area:

of appr. 200 Nm offshore within the radio range of the radiotelephony distress frequency 2182 kHz
with the exception of sea area A1 where communication is possible with at least one coast radio station MF telephony and continuous DSC alerting is possible
where reliable radio communication can be established with the use of a DSC on the MF frequency of 2187.5 kHz with one or more coast stations
Don't know

Review Answers

GMDSS. General. Test 4

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