Emergency Position Indicating Radio Beacon, a distress alerting device that transmits a signal on 406 MHz to satellites in the Cospas-Sarsat system, providing the vessel's identity and GPS position to search and rescue authorities. EPIRBs activate automatically when immersed in water or can be triggered manually.
Also known as: Emergency Position Indicating Radio Beacon.
Category: Safety & Emergency
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AISAutomatic Identification System, a tracking system that uses VHF radio transponders on ships to automatically exchange vessel identification, position, course, speed, and other data with nearby ships and shore-based systems.Collision RegulationsThe International Regulations for Preventing Collisions at Sea (COLREGS), a set of rules published by the IMO that establish navigation protocols for vessels to follow in order to avoid collisions.Enclosed Space EntryA regulated procedure for entering confined or enclosed spaces aboard a vessel, such as cargo holds, ballast tanks, and void spaces, where the atmosphere may be oxygen-deficient or contain hazardous gases.Fire DrillA mandatory practice exercise conducted at regular intervals on board ship to train crew members in fire prevention, detection, and firefighting procedures.Immersion SuitA protective suit designed to reduce body heat loss when immersed in cold water, required to be carried on vessels operating in cold-water regions.ISM AuditAn inspection conducted by flag state authorities or recognised organisations to verify that a shipping company and its vessels comply with the International Safety Management Code.
Back to DictionaryEntry updated May 2026