What is the RT proword for DSC distress?
MAYDAY
Define sea area A1
A vessel would be within the radiotelephony (RT) range of a coast radio station such as UK Coast Guard. Where the coast station has continuous very high frequency (VHF) Digital Selective Calling (DSC) facilities. An approximate range for this might be 30 to 50 nautical miles.
Define sea area A2
Excluding sea area A1, a vessel would be within radiotelephony range of a coast radio station, where the station has continuous medium frequency (MF) DSC facilities. An approximate range here might be 150 to 200 nautical miles.
Define sea area A3
Excluding areas A1 or A2, a vessel would need to be fitted with a recognised maritime satellite system (RMSS). The main one used on most ship is the international Maritime satellite (INMARSAT) system. Using eight satellites that are in Geo stationary orbit of the Earth. They circle the Earth at the same rate as the Earth rotates, this is an area from 76° in the northern hemisphere to 76° in the southern hemisphere. We will use INMARSAT as our main RMSS on this course.
Define sea area A4
Excluding all other areas, this is often defined as being the polar regions, above and below 76°. It must be remembered however that any vessel outside of sea areas one and two without the appropriate RMSS fit also effectively enters sea area A4.
What does RMSS mean?
Recognised Maritime Satellite System
What does EGC mean?
Enhanced Group Calling
what is the secondary method of alerting in all sea areas?
COSPAS-SARSAT EPIRB
What is the GMDSS pro word POB associated with?
Persons OnBoard
What is the GMDSS pro word RIA associated with?
Require Immediate Assistance; this is a mandatory phrase within a call for a distress alert
What is the GMDSS pro word R SOS associated with?
Received Mayday
This is part of the response to a vessel in distress (or a shore authority) at the point that a ships Master wishes to inform others that a call for help has been received.
Define Distress alert
A ship, aircraft, vehicle, or person is in grave and imminent danger and requires immediate assistance
What is the RT proword for DSC distress relay?
MAYDAY RELAY
What is the RT proword for DSC urgency?
PAN PAN
What is the RT proword for DSC safety?
SECURITE
Give each element of MIPNANOO
M - Mayday
I - Identity
P - Position
N - Nature
A - Assistance
N - Number of people onboard (POB)
O - Other info
O - Over
Give each element of STOW acronym
S - Send a DSC…
T - To all ships/ individual
O - On channel…
W - Set Watch RT on
Define an Urgency situation
“I have a situation at my location or there is concern for the safety of a ship, aircraft, vehicle, or person”
help is needed but not life threatening
Define a Safety situation
“The unit sending this message has an important or meteorological issue to report”
What does DROBOS stand for?
Distress Relay On Behalf Of Someone else
What is the MMSI for AIS SART?
970****
What is the MMSI for AIS EPIRB?
974****
What frequency does a SART operate?
9.3 ghz
What does the EPIRB signal indicate?
That one or more persons are in distress, may no longer be on board ship or aircraft and that receiving facilities may not be available.
