DMB 1
DMB 1 :
Datum Marker Buoy's are small waterproof radio transmitters, dropped from helicopters, airplanes or boats, which are used to mark the location of floating debris. The DMBs drift at or near the same speed as the actual sea current, enabling ships and aircraft to track the drift of the debris or to serve as location reference."bouée-repére électronique". (Marine SAR)
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