GMDSS ACTUAL Exam Questions and
CORRECT Answers
Routine RT inter-ship VHF messages may be passed on... - CORRECT ANSWER - Ch.08
VHF is the only ship-to ship message chanel listed in the options
After transmitting a VHF DSC Distress Alert in Sea Area A1, you should expect a subsequent
acknowledgement by RT on... - CORRECT ANSWER - From an MRCC and subsequently
a further acknowledgement by RT on Ch 16
An example of a Numerical ID for an AIS-SART would be... - CORRECT ANSWER -
The numerical identities are similar in format to MMSI - where those starting with a whole
number from 2-7 inclusive are normal ship's MMSI
The antenna used by Inmarsat "Fleet" installation is... - CORRECT ANSWER - Inmarsat
Fleet require a directional antenna to be pointing at the satellite for the system to operate
The propagation path used by satellite EPIRB equipment is... - CORRECT ANSWER - At
the frequencies used by EPIRBs e.g. 406 MHz the main propagation path is by the direct wave or
line of sight
The preferred frequency to transmit a distress message using telex in MF is... - CORRECT
ANSWER - 2174.5kHz
After transmitting a VHF DSC Urgency Call, the RT call and message would normally be sent
on... - CORRECT ANSWER - The "Pan Pan" call and message would normally be sent on
Ch 16, thought repetitions , updates and long messages can be sent on a working channel
When you receive a MF DSC Urgency Call you should... - CORRECT ANSWER - MF RT
Urgency Calls and messages are normally sent on 2182kHz. However - long messages, updates
and/or repetitions may be sent on a working frequency
, You receive an "All Stations" DSC Safety Call on Ch. 70 VHF, you should... - CORRECT
ANSWER - Safety "SÉCURITÉ" messages should normally be sent on a working channel
- though a preliminary voice call may also be sent on Ch.16 (for the benefit of non- SOLAS craft
not fitted with DSC)
Your vessel has sighted a hazard to shipping in GMDSS Sea Are A1. Your initial announcement
to other vessels should be a Ch 70 DSC... - CORRECT ANSWER - An DSC all-ships
Safety Call on Ch.70 will get the attention of other vessels' before your voice Securite call and
message addressed to All-Stations on Ch.16 informs them of the specific danger to navigation
After receiving a VHF DSC Distress Alert Relay from an MRCC.... - CORRECT
ANSWER - You should listen for a MAYDAY RELAY message on Ch.16
The main path of propagation for 24-hour communication on an 8 MHz radio frequency is... -
CORRECT ANSWER - 8MHz is a radio frequency in the HF band. The main path of
24hour propagation for this band is the sky wave
The propagation path used by HF signals, from the SSB radio, to achieve long- range
communications is... - CORRECT ANSWER - The main propagation path used by HF
signals to achieve world wide communication is by reflection of sky waves
The Navtex frequency far a second language broadcast is... - CORRECT ANSWER - 490
kHz
The action to be taken after sending a false Distress Alert on VHF Ch70 is to... - CORRECT
ANSWER - To listen on Ch16 for the "Mayday" call and message
To find VHF/MF RT frequencies, and HF ITU Channels, for Coast Radio Stations providing
commercial ship-shore services, you should look in.. - CORRECT ANSWER - ALRS Vol
1 contains details of working frequencies/ channels for CRSs providing VHF, MF and HF RT etc
services - and working channels for MRCCs.
CORRECT Answers
Routine RT inter-ship VHF messages may be passed on... - CORRECT ANSWER - Ch.08
VHF is the only ship-to ship message chanel listed in the options
After transmitting a VHF DSC Distress Alert in Sea Area A1, you should expect a subsequent
acknowledgement by RT on... - CORRECT ANSWER - From an MRCC and subsequently
a further acknowledgement by RT on Ch 16
An example of a Numerical ID for an AIS-SART would be... - CORRECT ANSWER -
The numerical identities are similar in format to MMSI - where those starting with a whole
number from 2-7 inclusive are normal ship's MMSI
The antenna used by Inmarsat "Fleet" installation is... - CORRECT ANSWER - Inmarsat
Fleet require a directional antenna to be pointing at the satellite for the system to operate
The propagation path used by satellite EPIRB equipment is... - CORRECT ANSWER - At
the frequencies used by EPIRBs e.g. 406 MHz the main propagation path is by the direct wave or
line of sight
The preferred frequency to transmit a distress message using telex in MF is... - CORRECT
ANSWER - 2174.5kHz
After transmitting a VHF DSC Urgency Call, the RT call and message would normally be sent
on... - CORRECT ANSWER - The "Pan Pan" call and message would normally be sent on
Ch 16, thought repetitions , updates and long messages can be sent on a working channel
When you receive a MF DSC Urgency Call you should... - CORRECT ANSWER - MF RT
Urgency Calls and messages are normally sent on 2182kHz. However - long messages, updates
and/or repetitions may be sent on a working frequency
, You receive an "All Stations" DSC Safety Call on Ch. 70 VHF, you should... - CORRECT
ANSWER - Safety "SÉCURITÉ" messages should normally be sent on a working channel
- though a preliminary voice call may also be sent on Ch.16 (for the benefit of non- SOLAS craft
not fitted with DSC)
Your vessel has sighted a hazard to shipping in GMDSS Sea Are A1. Your initial announcement
to other vessels should be a Ch 70 DSC... - CORRECT ANSWER - An DSC all-ships
Safety Call on Ch.70 will get the attention of other vessels' before your voice Securite call and
message addressed to All-Stations on Ch.16 informs them of the specific danger to navigation
After receiving a VHF DSC Distress Alert Relay from an MRCC.... - CORRECT
ANSWER - You should listen for a MAYDAY RELAY message on Ch.16
The main path of propagation for 24-hour communication on an 8 MHz radio frequency is... -
CORRECT ANSWER - 8MHz is a radio frequency in the HF band. The main path of
24hour propagation for this band is the sky wave
The propagation path used by HF signals, from the SSB radio, to achieve long- range
communications is... - CORRECT ANSWER - The main propagation path used by HF
signals to achieve world wide communication is by reflection of sky waves
The Navtex frequency far a second language broadcast is... - CORRECT ANSWER - 490
kHz
The action to be taken after sending a false Distress Alert on VHF Ch70 is to... - CORRECT
ANSWER - To listen on Ch16 for the "Mayday" call and message
To find VHF/MF RT frequencies, and HF ITU Channels, for Coast Radio Stations providing
commercial ship-shore services, you should look in.. - CORRECT ANSWER - ALRS Vol
1 contains details of working frequencies/ channels for CRSs providing VHF, MF and HF RT etc
services - and working channels for MRCCs.
