Global Maritime Distress and Safety System Radio has been the foundation of distress and safety systems used by ships for the safety of human life at sea in 1899. It was soon realized that to be effective a radio based distress and safety system had to be founded on internationally agreed rules concerning the type […]

GMDSS Sea Areas For the needs of the G.M.D.S.S applications, sea areas have been world widely characterized as: Sea Area A1. Within the radiotelephone coverage of at least one VHF coast station in which continuous DSC alerting is available. Such an area could extend typically 20- 50 nautical miles from the coast station. Sea Area […]

Every vessel during at sea has to be capable of performing the nine radio-communication functions of the GMDSS, viz: – Transmission of ship-to-shore distress alerts by at least two separate and independent means, each using a different radio-communication service. – Reception of shore-to-ship distress alerts. – Transmission and reception of ship-to-ship distress alerts. – Transmission […]