global maritime distress and safety system wikipedia - EAS
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The Global Maritime Distress and Safety System (GMDSS) is a worldwide system for automated emergency signal communication for ships at sea developed by the United Nations' International Maritime Organization (IMO) as part of the SOLAS Convention. It's a set of safety procedures, types of equipment, … See more
Since the invention of radio at the end of the 19th century, ships at sea have relied on Morse code, invented by Samuel Morse and first used in 1844, for distress and safety telecommunications. The need for ship and coast radio … See more
National maritime authorities may issue various classes of licenses. The General Operator’s Certificate is required on SOLAS vessels operating also outside GMDSS Sea Area A1, while a Restricted Operator’s Certificate is needed on SOLAS vessels operated … See more
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