Subelement F: Maritime Safety Information (M.S.I.)— Topic :
Question 40F3
Element 7R (GMDSS-RO)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 is too low to warrant its implementation?
Explanation
SafetyNET is an international broadcast service for Maritime Safety Information (MSI) via Inmarsat-C satellite. Its satellite-based nature means it does not rely on terrestrial infrastructure, making it ideal for providing automated safety broadcasts in remote coastal areas or regions with low shipping density where establishing local NAVTEX transmitters would be unfeasible or uneconomical. As a component of the Global Maritime Distress and Safety System (GMDSS), SafetyNET ensures critical weather warnings, navigation warnings, and other urgent information reach ships globally, independent of local ground stations.
VHF DSC (B) is a terrestrial, short-range system, limited to line-of-sight propagation, requiring local infrastructure. AMVER (A) is a voluntary ship reporting system for search and rescue, not an automated broadcast service for general safety information. ARQ SITOR (NBDP) (C) is a digital text communication mode (used by NAVTEX itself), but it's not the designated *service* that provides global, automated MSI specifically for areas lacking terrestrial infrastructure.
Related Questions
40F1 Where NAVTEX cannot be feasibly established, what system can be implemented to provide an automated service in coastal waters to receive MSI?40F2 What action should a GMDSS Radio Operator take when SafetyNETTM Distress or Urgency messages are received by the vessel's EGC receiver?40F4 Aboard ship, SafetyNETTM messages can be received by which equipment/methods?40F5 SafetyNETTM messages can be received by which of the following shipboard equipment?40F6 Maritime Safety Information is promulgated via satellite through which system?