Subelement F: Maritime Safety Information (M.S.I.)— Topic :
Question 40F4
Element 7R (GMDSS-RO)Aboard ship, SafetyNETTM messages can be received by which equipment/methods?
Explanation
SafetyNET is a global, satellite-based service under the Global Maritime Distress and Safety System (GMDSS) for broadcasting Maritime Safety Information (MSI) to ships. It specifically utilizes the Inmarsat-C satellite system. Ships receive SafetyNET messages via the Enhanced Group Call (EGC) receiver, which is an integral component of the vessel's Inmarsat-C Satellite Earth Station (SES). This ensures reliable reception of navigation warnings, weather forecasts, and search and rescue information worldwide.
VHF DSC (B) is for short-range digital selective calling, not a SafetyNET broadcast receiver. NAVTEX (C) is a terrestrial medium-frequency (MF) telex system for MSI, operating on 518 kHz, and is distinct from the satellite-based SafetyNET system. HF SITOR (NBDP) (D) is also a terrestrial high-frequency (HF) system for MSI, not the satellite-based SafetyNET.
Related Questions
40F2 What action should a GMDSS Radio Operator take when SafetyNETTM Distress or Urgency messages are received by the vessel's EGC receiver?40F3 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?40F5 SafetyNETTM messages can be received by which of the following shipboard equipment?40F6 Maritime Safety Information is promulgated via satellite through which system?41F1 SafetyNETTM promulgates what type of information?