GMDSS - VHF DSC basics
2:27
GMDSS - Respond to a routine VHF DSC alert
14:28
GMDSS - MF/HF DSC basic operation
31:26
Radio VHF-DSC – Normativa - Protocolli - Certificato SRC
8:44
LIVE, Ship-to-Ship HF-DSC Calling, on GMDSS HF-DSC Freqs
16:27
The whole of the RYA VHF GMDSS Course
8:58
GMDSS - SART
48:17
POR QUE TRUMP DEVE COMPRAR A GROENLÂNDIA? | Professor HOC
14:29