An internationally recognised safety signal, spoken three times at the beginning of a radio message, used to broadcast important navigational or meteorological warnings to all vessels in the area. Securite calls have a lower priority than Mayday and Pan-Pan signals.
Category: Maritime Communication
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Flag SignalsA system of communication using coloured flags flown from a vessel's mast or signal halyard, each representing a letter of the alphabet, a numeral, or a specific meaning.LRITLong Range Identification and Tracking, an international system for tracking vessels globally, adopted by the IMO as an amendment to SOLAS.Morse CodeA communication system using sequences of short and long signals (dots and dashes) to represent letters and numbers.SARSearch and Rescue, the coordinated effort to locate and recover persons in distress at sea, involving maritime rescue coordination centres (MRCCs), coast guard units, naval vessels, and commercial ships.Ship ReportingMandatory or voluntary systems requiring vessels to report their position, course, speed, and other information to shore-based authorities when entering or transiting designated areas.VHF RadioVery High Frequency radio, the primary means of short-range voice communication between ships and between ship and shore in the maritime environment.
Back to DictionaryEntry updated May 2026