Gmdss study guide UPDATED ACTUAL
Exam Questions and CORRECT Answers
Which GMDSS system utilizes terrestrial radio techniques? - CORRECT ANSWER -
VHF-MH-HF-DSC
Which of the following regions lie outside Sea Area A1, A2, and A3? - CORRECT
ANSWER - A4
Which of the following is a functional or carriage requirement for compulsory vessels? -
CORRECT ANSWER - A compulsory vessel must satisfy certain equipment carriage
requirements based on the intended sea area of operation.
Which statement is true regarding a vessel equipped with GMDSS equipment that will remain in
Sea Area A1 at all times? - CORRECT ANSWER - The vessel must be provided with
radio installation capable of initiating the transmission of ship-to-shore Distress alerting from the
position from which the ship is normally navigated.
Which of the following statements concerning maintenance requirements is false? - CORRECT
ANSWER - If shore-based maintenance is used, maintenance services do not have to be
completed or performance verified unless the vessel will be sailing to a non-US port.
What is the frequency range for Medium Frequency? - CORRECT ANSWER - 300-
3,000kHz
Which of the following systems is most susceptible to fading or static interference? - CORRECT
ANSWER - HF SITOR (NBDP)
What statement best describes modulation? - CORRECT ANSWER - Imposing
intelligence onto a radio carrier signal.
, Which of the following statements describes the carrier? - CORRECT ANSWER - The
carrier is a Radio Frequency (RF) signal that is modulated to carry intelligence.
What is the channel spacing for MF-HF voice frequencies? - CORRECT ANSWER - 3.0
kHz
A vertical (whip) antenna has a radiation pattern best described by? - CORRECT
ANSWER - A circle
How often must a compulsory vessel's GMDSS radio station be inspected? - CORRECT
ANSWER - Annually, by the FCC or designated authority.
Which of the following references should be consulted for information on the proper setup and
use of GMDSS equipment? - CORRECT ANSWER - The manufacturer's operating
manuals.
Which of the following maintenance functions is not the responsibility of the GMDSS Radio
Operator? - CORRECT ANSWER - Aligning the power output stage for maximum power.
Which FCC license meets the requirements to serve as a GMDSS operator? - CORRECT
ANSWER - GMDSS Radio Operator's License
Which statement is false regarding the GMDSS requirement for ship sources of energy? -
CORRECT ANSWER - The reserve sources of energy need to supply independent MF and
HF radio installations at the same time.
Under GMDSS, a compulsory VHF-DSC radiotelephone installation must be tested at what
minimum intervals at sea? - CORRECT ANSWER - Daily
A vessel certified for service in Sea Area A3 is required to maintain a watch on: - CORRECT
ANSWER - VHF Channel 70, MF frequency 2187.5 kHz, HF on 8414.5 kHz and one
other HF DSC frequency.
Exam Questions and CORRECT Answers
Which GMDSS system utilizes terrestrial radio techniques? - CORRECT ANSWER -
VHF-MH-HF-DSC
Which of the following regions lie outside Sea Area A1, A2, and A3? - CORRECT
ANSWER - A4
Which of the following is a functional or carriage requirement for compulsory vessels? -
CORRECT ANSWER - A compulsory vessel must satisfy certain equipment carriage
requirements based on the intended sea area of operation.
Which statement is true regarding a vessel equipped with GMDSS equipment that will remain in
Sea Area A1 at all times? - CORRECT ANSWER - The vessel must be provided with
radio installation capable of initiating the transmission of ship-to-shore Distress alerting from the
position from which the ship is normally navigated.
Which of the following statements concerning maintenance requirements is false? - CORRECT
ANSWER - If shore-based maintenance is used, maintenance services do not have to be
completed or performance verified unless the vessel will be sailing to a non-US port.
What is the frequency range for Medium Frequency? - CORRECT ANSWER - 300-
3,000kHz
Which of the following systems is most susceptible to fading or static interference? - CORRECT
ANSWER - HF SITOR (NBDP)
What statement best describes modulation? - CORRECT ANSWER - Imposing
intelligence onto a radio carrier signal.
, Which of the following statements describes the carrier? - CORRECT ANSWER - The
carrier is a Radio Frequency (RF) signal that is modulated to carry intelligence.
What is the channel spacing for MF-HF voice frequencies? - CORRECT ANSWER - 3.0
kHz
A vertical (whip) antenna has a radiation pattern best described by? - CORRECT
ANSWER - A circle
How often must a compulsory vessel's GMDSS radio station be inspected? - CORRECT
ANSWER - Annually, by the FCC or designated authority.
Which of the following references should be consulted for information on the proper setup and
use of GMDSS equipment? - CORRECT ANSWER - The manufacturer's operating
manuals.
Which of the following maintenance functions is not the responsibility of the GMDSS Radio
Operator? - CORRECT ANSWER - Aligning the power output stage for maximum power.
Which FCC license meets the requirements to serve as a GMDSS operator? - CORRECT
ANSWER - GMDSS Radio Operator's License
Which statement is false regarding the GMDSS requirement for ship sources of energy? -
CORRECT ANSWER - The reserve sources of energy need to supply independent MF and
HF radio installations at the same time.
Under GMDSS, a compulsory VHF-DSC radiotelephone installation must be tested at what
minimum intervals at sea? - CORRECT ANSWER - Daily
A vessel certified for service in Sea Area A3 is required to maintain a watch on: - CORRECT
ANSWER - VHF Channel 70, MF frequency 2187.5 kHz, HF on 8414.5 kHz and one
other HF DSC frequency.
