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GMDSS · 600 questions

Element 7 - USCG Exam Questions

GMDSS radio operating practices: digital selective calling, INMARSAT, NAVTEX, EPIRBs, search and rescue transponders, and distress, urgency, and safety procedures.

Every question below is a real U.S. Coast Guard exam question with four choices. Answer one and the correct choice is revealed instantly, with the USCG reference and illustration where the question uses one.

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All Element 7 questions

Questions 301–400 of 600 · page 4 of 6

  1. #761 Which action is the most appropriate action for a GMDSS radio Operator to take in a Distress situation where immediate help is needed, but the vessel...
  2. #762 DSC is used primarily to:
  3. #763 GMDSS vessels equipped for Sea Areas A2, A3 or A4 must maintain a continuous DSC watch on 2187.5 kHz.
  4. #764 Which statement is true regarding Distress communications under GMDSS?
  5. #765 When operating in coastal waters (sea area A1), a GMDSS-equipped vessel must:
  6. #766 What indication is given to the personnel in a survival craft of the approach of SAR craft?
  7. #767 Which of the following would aid the detection of a SART's signal?
  8. #768 How can a SART's detection and effective range be maximized?
  9. #769 Which statement is NOT true regarding the SART?
  10. #770 At what point does a SART begin transmitting?
  11. #771 How does the searching vessel's radar interrogate a survival craft SART?
  12. #772 What radar display changes indicate the correct approach to a SART and what care should be taken in a SAR situation?
  13. #773 How can rescue personnel detect that a SART is transmitting in the immediate vicinity?
  14. #774 What signal is detected as originating from an AIS SART and how is the signal displayed?
  15. #775 How can vessel personnel detect the operation of a SART in its vicinity?
  16. #776 What is not an advantage of an AIS SART signal when compared to a radar-based SART signal?
  17. #777 Which of the following statements concerning testing and maintenance of SARTs is true?
  18. #778 Why is it important to limit the duration of testing a SART?
  19. #779 What statement is true regarding tests and maintenance that could be provided for the SART?
  20. #780 Why should functional testing of a SART be minimized?
  21. #781 Which is not a function of a satellite under COSPAS-SARSAT using satellite EPIRBs?
  22. #782 Which of the following satellite systems is of particular & dedicated importance to search and rescue missions under GMDSS?
  23. #783 Which of the following statements concerning COSPAS-SARSAT is FALSE?
  24. #784 Which of the following statements concerning COSPAS-SARSAT is FALSE?
  25. #785 Which of the following statements concerning the EPIRB system is true?
  26. #786 Which of the following statements concerning satellite EPIRBs is true?
  27. #787 What features may be found on GMDSS satellite EPIRB units?
  28. #788 What feature is not a component of a 406 MHz satellite EPIRB?
  29. #789 What statement is true regarding 406 MHz EPIRB transmissions?
  30. #790 Which of the following is normally part of 406 MHz satellite EPIRBs?
  31. #791 Which of the following statements concerning EPIRBs is FALSE?
  32. #792 Which of the following EPIRBs is most likely to be used to transmit a Distress alert signal?
  33. #793 What may be used as a homing signal by the search and rescue vessels in the immediate vicinity of the ship in Distress?
  34. #794 What is an example of a locating signal?
  35. #795 Which device provides the best method to locate a ship in Distress or survival craft in the GMDSS?
  36. #796 With what other stations may portable survival craft transceivers NOT communicate?
  37. #797 Equipment for radiotelephony use in survival craft stations under GMDSS must have what capability?
  38. #798 Equipment for radiotelephony use in survival craft stations under GMDSS must have what characteristics?
  39. #799 Which statement is NOT true regarding the requirements of survival craft portable two-way VHF radiotelephone equipment?
  40. #800 Which statement is NOT true regarding the requirements of VHF Survival Craft Transceivers?
  41. #801 Which of the following has been designated for “On-scene” communications in GMDSS?
  42. #802 Which of the following frequencies have been designated for “On-scene” communications in the Global Maritime Distress and Safety System?
  43. #803 Which of the following frequencies has NOT been designated for GMDSS “On-scene” or SAR communications?
  44. #804 “On-scene" communications would best be represented by?
  45. #805 For “On-scene” communications, vessels in Distress and SAR Aircraft should use?
  46. #806 Which action should the GMDSS radio operator take in a Distress situation when embarking in survival craft?
  47. #807 Which of these would be vital to a GMDSS SAR situation in polar regions?
  48. #808 Which statement is FALSE regarding the COSPAS-SARSAT system?
  49. #809 Which statement is FALSE regarding the COSPAS-SARSAT system?
  50. #810 What information is transmitted by a 406 MHz EPIRB alert?
  51. #811 Which statement is FALSE regarding the COSPAS-SARSAT system and EPIRB operations?
  52. #812 What actions should the GMDSS radio operator take prior to any potential Distress situation?
  53. #813 What information should be contained in a detailed Distress message that was not transmitted by an initial Distress “hot-key” alert?
  54. #814 Which GMDSS equipment is best suited to simultaneous long-range communications with an RCC/coast station and OSC vessels or SAR aircraft?
  55. #815 Which statement is NOT true regarding an Inmarsat Distress Alert?
  56. #816 What are the best resources for researching and planning equipment setups and updates prior to any potential Distress situation?
  57. #817 Which statement is true regarding Inmarsat “hot-key” Distress Alerts?
  58. #818 At mid-day, what would be the best choice in attempting to communicate with a shore station 15 miles distant?
  59. #819 Which of the following factors does not normally affect the range of VHF transmissions?
  60. #820 Much longer than normal VHF communications distances are typically caused by:
  61. #821 Describing VHF transmissions as "line of sight" does NOT mean:
  62. #822 The effectiveness of VHF communications is maximized by:
  63. #823 A VHF frequency channel pair of TX 157.200 MHz and RX 161.800 MHz would most likely be:
  64. #824 The USA-INT control on VHF units:
  65. #825 The USA-INT control on VHF units:
  66. #826 Proper and legal VHF operations require all of these EXCEPT?
  67. #827 How is mutual interference on 518 kHz among NAVTEX stations avoided?
  68. #828 When do NAVTEX broadcasts typically achieve maximum transmitting range?
  69. #829 What should a GMDSS Radio Operator do if a NAVTEX warning message is received but it contains too many errors to be usable?
  70. #830 Which of these cannot happen when a paper model NAVTEX receiver runs out of paper?
  71. #831 How is a NAVTEX receiver programmed to reject certain messages?
  72. #832 Which of the following statements is true?
  73. #833 What means are used to prevent the reception of unwanted broadcasts by vessels utilizing the NAVTEX system?
  74. #834 What statement is true regarding the control the operator can exercise over the NAVTEX receiver's operation?
  75. #835 Which messages are mandatory to be received and should not typically be rejected or disabled by the operator of a NAVTEX receiver?
  76. #836 The NAVTEX message header contains the following?
  77. #837 If the Inmarsat-C terminal is inoperative but the vessel remains within NAVTEX coverage -- which of the following message categories should not be dis...
  78. #838 What determines whether a NAVTEX receiver prints a particular type of message content from a programmed NAVTEX station?
  79. #839 Which information determines if a NAVTEX message is to be rejected?
  80. #840 Where NAVTEX cannot be feasibly established, what system can be implemented to provide an automated service in coastal waters to receive MSI?
  81. #841 What action should a GMDSS Radio Operator take when SafetyNETTM Distress or Urgency messages are received by the vessel's EGC receiver?
  82. #842 What system can provide an automated service in coastal waters where it may not be feasible to establish the NAVTEX service or where shipping density...
  83. #843 Aboard ship, SafetyNETTM messages can be received by which equipment/methods?
  84. #844 SafetyNETTM messages can be received by which of the following shipboard equipment?
  85. #845 Maritime Safety Information is promulgated via satellite through which system?
  86. #846 To receive all mandatory MSI using the SafetyNETTM system the vessel must:
  87. #847 In using SafetyNETTM for the receipt of MSI (Maritime Safety Information):
  88. #848 Over what system are Enhanced Group Calls transmitted?
  89. #849 How is a MSI (Maritime Safety Information) broadcast received by an Inmarsat-C SES that is engaged in communications?
  90. #850 What messages originate from registered information providers anywhere in the world and are broadcast to the appropriate ocean region via a LES?
  91. #851 Which HF SITOR (NBDP) mode would be selected to receive MSI broadcasts from high seas shore stations?
  92. #852 Frequencies for receiving HF MSI (Maritime Safety Information) are:
  93. #853 Which sequence is associated with the 5 new Arctic Ocean NAVAREAs?
  94. #854 A vessel on a voyage between Miami and Los Angeles via the Panama Canal would be operating in which NAVAREAS?
  95. #855 Which of the following actions should be taken once the vessel is berthed and will not leave port again for several weeks?
  96. #856 What action should always be taken before powering down an Inmarsat-C terminal or leaving one satellite footprint for another?
  97. #857 With most Inmarsat-C systems what should the indicator lamps do when powering up?
  98. #858 What is the importance of a successful log in indication, after power-up, on an Inmarsat-C terminal?
  99. #859 On an Inmarsat-C system, what is the importance of a successful “SYNC” indication after power up?
  100. #860 On an Inmarsat-C system an incoming EGC alarm sounds:

Element 7 questions: what to expect

Q How many Element 7 questions are in the GMDSS pool?

There are 600 Element 7 questions on this site, every one released by the U.S. Coast Guard or taken from the National Maritime Center's sample examinations, with its correct answer. The exam draws its Element 7 module from the same pool.

Q What score do I need to pass the Element 7 module?

Most USCG exam modules, including Element 7, require 70 percent to pass. Rules of the Road modules require 90 percent.

Q Are these the real USCG Element 7 exam questions?

Yes. They are the published U.S. Coast Guard questions, matched to the National Maritime Center's 2026 sample examinations. Answer any question to see the correct choice, the USCG reference and the illustration where the question uses one.

About the GMDSS question pool

These are the published GMDSS Element 7 questions covering radio operating practices: DSC, satellite communications, NAVTEX, EPIRBs, and distress procedures. The GMDSS Radio Operator exam draws from this pool.