Subelement A: General Information and System Overview.— Topic :
Question 3A1
Element 7R (GMDSS-RO)The Sea Area you are in is determined by:
Explanation
The Global Maritime Distress and Safety System (GMDSS) divides the world's oceans into "Sea Areas" based on the available communication capabilities for distress and safety.
* **Sea Area A1** is within range of a VHF-DSC coast station.
* **Sea Area A2** is beyond A1 but within range of an MF-DSC coast station.
* **Sea Area A3** is beyond A2 but within range of an Inmarsat geostationary satellite.
* **Sea Area A4** covers the remaining polar regions, primarily served by HF-DSC.
Therefore, the specific GMDSS communication infrastructure available at a given geographic location—i.e., whether it's covered by VHF-DSC, MF-DSC, HF-DSC coast stations, or Inmarsat satellites—determines which Sea Area it is.
Options A (distance from shore) is a factor in some areas but not the definitive, universal determinant. Options B (maintenance availability) and D (voyage type) are unrelated to the regulatory definition of Sea Areas.
Related Questions
39F5 Which information determines if a NAVTEX message is to be rejected?39F6 NAVTEX broadcasts are sent: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?3A4 For a vessel to be in GMDSS Sea Area A-1: