Monday, April 8, 2013

■ Watchkeeping

Ships, while at sea, shall maintain a continuous watch appropriate to the sea area in which the ship is sailing using; 
1) VHF DSC CH 70 
2) MF DSC distress and safety frequency 2,187.5 Khz 
3) DSC distress and safety frequency 8,414.5Khz and at least one other HF DSC frequency appropriate to local time 
   and ship’s position relative to the nearest DSC coast station 
4) VHF CH 16 
5) GMDSS ships, where practical, should maintain a watch on VHF Ch13 for communication related to 
    the safety of navigation 
* A continuous watch for broadcasts of maritime safety information shall also be kept, for the area in which the ship
    is sailing, by; 
1) NAVTEX (518Khz) 
2) Inmarsat-C or EGC safetyNET receiver 
3) HF Telex 




When AC power source is occurred, DC power source(Radio battery) supplying to VHF(DSC),
MF/HF(DSC), INMARSAT-C  and GPS automatically.

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