Subelement F: Maritime Safety Information (M.S.I.)— Topic :
Question 42F2
Element 7R (GMDSS-RO)What is the purpose of the dedicated EGC receiver for A-1 area GMDSS Vessels?
Explanation
The dedicated Enhanced Group Call (EGC) receiver on GMDSS vessels, including those in A-1 areas, is designed to receive Maritime Safety Information (MSI) via the Inmarsat SafetyNETTM service. While A-1 areas typically have NAVTEX coverage (a terrestrial MSI service), SafetyNET is a global satellite-based system that provides a redundant and complementary means of receiving crucial safety broadcasts. This ensures that MSI is always received, even if the vessel transits beyond reliable NAVTEX range, or if specific MSI is only broadcast via the satellite system, effectively covering "areas without NAVTEX coverage."
B is incorrect because an EGC receiver is for *receiving* information, not for *transmitting* vessel location for tracking systems like AMVER.
C is incorrect because a dedicated EGC receiver only *receives* messages; it does not transmit. Furthermore, SafetyNET broadcasts MSI *to* vessels, not for vessels to transmit "SafetyNET messages."
D is incorrect because the EGC receiver's purpose is to *receive* MSI. While the GMDSS equipment filters messages based on the vessel's NAVAREA, the receiver itself does not "track" the vessel's current NAVAREA.
Related Questions
41F6 In using SafetyNETTM for the receipt of MSI (Maritime Safety Information):42F1 Over what system are Enhanced Group Calls transmitted?42F3 Which of the following provides a unique automated system capable of addressing messages to predetermined groups of ships or all vessels in both fixed and variable geographic areas?42F4 What system may be useful for messages, such as local storm warnings or a shore-to-ship Distress alert, for which it is inappropriate to alert all ships in the satellite coverage area?42F5 What services are available through Enhanced Group Calls?