GMDSS Sea Coverage Area A3 relates to which satellite communication system?

GMDSS Sea Coverage Area A3 relates to which satellite communication system?

• A. INMARSAT
• B. MF
• C. HF
• D. COSPAS-SARSAT

Answer: (A)

GMDSS assigns sea areas to the mode of safety communications that serves them. Sea Area A3 is the region where satellite-based distress and safety communications are provided by Inmarsat’s geostationary satellite network. That’s why this area is associated with the Inmarsat system. In contrast, MF/HF (the long‑range radio bands) are terrestrial radio services used in other areas, and COSPAS-SARSAT is a satellite distress beacon system primarily linked to polar regions (A4). So for A3, the satellite system in play is Inmarsat.

GMDSS assigns sea areas to the mode of safety communications that serves them. Sea Area A3 is the region where satellite-based distress and safety communications are provided by Inmarsat’s geostationary satellite network. That’s why this area is associated with the Inmarsat system.

In contrast, MF/HF (the long‑range radio bands) are terrestrial radio services used in other areas, and COSPAS-SARSAT is a satellite distress beacon system primarily linked to polar regions (A4). So for A3, the satellite system in play is Inmarsat.