(мор.) аварійний радіомаяк, для подачі сигналів лиха
distress alert; distress call
non-directional beacon (NDB) / non directional beacon
distress signal (=SOS)
Global Maritime Distress Safety System (GMDSS)
ship in distress
suffer distress
distress
distress call
distress landing
distress message
distress phase
distress signal
distress traffic
in distress
international distress frequency
distress signals
Space System for Tracking Ships and Aircraft in Distress – Search and Rescue Satellite (COSPAS-SARSAT)
radio distress call
beacon system
crash beacon
identification beacon
rotating (radio) beacon
acoustic beacon
beacon bearing
beacon radar
beacon receiver
bearing beacon
crash locator beacon
landing beacon
navigation beacon
non-directional radio beacon with marker (NDB/MRB)
equisignal radio-range beacon