Subelement A: General Information and System Overview.— Topic :
Question 3A4
Element 7R (GMDSS-RO)For a vessel to be in GMDSS Sea Area A-1:
Explanation
GMDSS Sea Area A-1 is defined internationally as an area within range of at least one VHF coast station where continuous Digital Selective Calling (DSC) alert capabilities are maintained. This ensures that a vessel in distress can initiate an alert via VHF-DSC and receive a timely response.
Option B accurately reflects this definition by specifying a coast station equipped with *continuous VHF-DSC capability*. This is the fundamental requirement for a sea area to be classified as A-1, providing automatic distress alerting and acknowledgments.
Options A, C, and D are incorrect because they either focus on specific entities (U.S.C.G., Public Correspondence Stations) rather than the critical technical capability, or they omit the crucial "continuous DSC" element. While these stations might exist within an A-1 area, it's the *continuous VHF-DSC watch* that defines the area for GMDSS purposes, not merely being within VHF range of a general communication or correspondence station.
Related Questions
3A2 If a vessel is on a voyage from Miami, Florida to Houston, Texas what Sea Areas may it transit through?3A3 If a vessel is engaged in local trade and at no point in its voyage travels outside the range of a VHF shore station with continuous DSC alerting then the vessel is operating in what area?3A5 A vessel is on a coastwise voyage that results in a distance off shore of 10 to 40 nm and therefore:3A6 What is defined as the area within the radiotelephone coverage area of at least one VHF coast station in which continuous DSC alerting is available as defined by the IMO regulation for GMDSS?40F1 Where NAVTEX cannot be feasibly established, what system can be implemented to provide an automated service in coastal waters to receive MSI?