What does GMDSS stand for and what is its purpose?

• A. Global Maritime Distress and Safety System; provides worldwide distress, safety, and routine communications.
• B. General Maritime Data and Surveillance System; monitors ship traffic.
• C. Geostationary Maritime Data System; stores voyage data.
• D. Global Mechanical Diagnostic Satellite System; supports repair diagnostics.

Answer: (A)

GMDSS stands for Global Maritime Distress and Safety System. Its purpose is to provide worldwide distress, safety, and routine communications for ships at sea, ensuring rapid alerting to rescue authorities and reliable exchange of safety information. It uses multiple channels—satellite, VHF, MF/HF radio, digital signaling, NAVTEX and other safety networks—so help can be dispatched promptly no matter where a vessel is. The other descriptions don’t fit because they refer to concepts like general data surveillance, geostationary data storage, or mechanical diagnostics, none of which match GMDSS's role in maritime distress and safety communications.