GMDSS Flashcards
What are the MF frequencies for:
1. DSC alerting/ RT distress
2. Routine ship to shore DSC calling
3. Shore to Ship routine DSC calling
4. Ship to Ship Routine DSC calling
5. R/T Ship to Ship (Securite)
- 2187.5/2182 (R/T)
- 2189.5
- 2177
- 2177
- 2048
What are the HF DSC frequencies for Distress Alerting, DSC and R/T
4MHz
6MHz
8414.5 KHz (preferred DSC)
8291 KHz (preferred R/T)
12 MHz
16 MHz
In what publication do we find HF stations for Alerting/calling/announcements?
BPG ‘A’checklist
IAMSAR Vol 3
ALRS Vol 5
ALRS vol 1
What is the primary VHF inter ship routine channel/communications between Ships and Aircraft
Ch 06
What is the ship-ship safety of navigation channel
Ch 13
Satellite Special access code 32
what shall we do?
Medical Advice
Satellite Special access code 38
Evacuate
Medical Assistance
Satellite Special access code 39
999 Coastguard
Maritime assistance (example, oil spill)
Satellite Special access code 41
Rain and sun
Weather obvs
Satellite Special access code 42
It might hurt you!
Navigational warning
Satellite Special access code 43
Where are we?
AMVER or ships positions reports
MMSI codes:
0
00
4
7
970
111
0 Group call
00 coast station
Inmarsat C
Inmarsat FBB
AIS sart
SAR aircraft
MSI frequencies
518kHz
490kHz
4209.5kHz
1.5/1.6GHz
Navtex international (english)
Navtex local language
Navtex tropical
Inmarsat and EGC Safety Net
Frequencies for:
EPIRB Alerting
EPIRB Homing
SART
406 MHz (All sea areas)
121.5 MHz
9-10 GHz (x band 3cm)
Maximum power output for:
VHF
MF
HF
25 W
400 W
1500 W (1.5Kw)
Always use the minimum power necessary for RELIABLE communications
Why do we not call between ships on duplex?
Ship stations cannot hear duplex transmissions
How long do we wait between routine calls on VHF?
Call-2 mins-call-2mins-call-3mins
The four inter-ship routine VHF channels
06 Primary
08 Secondary
72
77
On board communication VHF channels
15/17
Who does GMDSS apply to
> 300 GT, on an international voyage
<300GT, carrying 12 or more passengers
Sea area operation requirements
Daily tests
Test DSC internally without radiating signal
Check battery voltage, top up electrolyte if needed
Check printers have adequate supply of paper
Log checked by Master