GMDSS: Element 7

1. A A unique radar signal consisting of a 12 dots radiating outward from a SART's position along its line of bearing.
2. B A unique two-tone "warbling" signal heard on VHF-FM Ch-70.
3. C A unique two-tone alarm signal heard upon the automatic un-muting of the 2182 kHz radiotelephone automatic watch receiver.
4. D The SART signal appears as a target which comes and goes

Tip: press A-D to answer