GMDSSjärjestelmään

The Global Maritime Distress and Safety System, or GMDSS, is an internationally agreed-upon set of safety procedures, equipment types, and communication protocols used to improve safety and the ability to rescue distressed ships, boats, and aircraft. GMDSS is a shore-based system that uses terrestrial and satellite communications, along with ship-based equipment, to provide reliable distress alerting and communication capabilities. Its primary purpose is to automate distress, urgency, and safety communications, making it easier for rescue coordination centers to locate and assist vessels in distress.

The system is operated by the International Maritime Organization (IMO) and is mandatory for all ships sailing on international voyages, as well as certain domestic voyages. GMDSS relies on a network of shore-based radio stations and satellite services to relay distress alerts. When a vessel activates a distress signal, the alert is automatically sent to the nearest relevant rescue coordination center. The system also facilitates communication between ships and between ships and shore, enabling coordination of rescue efforts.

Key components of GMDSS include distress alerting devices such as EPIRBs (Emergency Position Indicating Radio Beacons) and SARTs (Search and Rescue Transponders), as well as communication equipment like VHF, MF/HF radio, and satellite terminals. Navigational warnings and meteorological information are also broadcast through GMDSS. The system is designed to ensure that distress messages are received and acted upon promptly, thereby enhancing maritime safety worldwide.