OOW 3000 (Georgia) > GMDSS > Flashcards

GMDSS Flashcards

(29 cards)

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1
Q

Receipt of a distress message, VHF in Mid Atlantic
(9)

A
  1. Ch 16.
  2. Call master
  3. Log information
  4. Gather as much information as possible
  5. Consider MAYDAY RELAY
  6. Proceed to casualty at best speed
  7. Establish comms with CRS and other vessels proceeding to distress
  8. Prepare for assist (+ rescue boat)
  9. X band for SART
  10. Additional look outs
  11. Medical station
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2
Q

Receipt of a distress message, VHF in Area A1 (Solent)
(10)

A
  1. Ch 16 . defer short time to allow coast stations to answer.
  2. Send RT Acknowledgement.
  3. Gather as much information as possible
  4. Consider MAYDAY RELAY
  5. Proceed to casualty at best speed
  6. Establish comms with CRS and other vessels proceeding to distress
  7. Prepare for assist (+ rescue boat)
  8. X band for SART
  9. Additional look outs
  10. Medical station
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3
Q

Receipt of a distress message, MF in Mid-Atlantic
(9)

A
  1. Ch 2182. Acknowledge immediately by RT.
  2. Gather as much information as possible
  3. Consider MAYDAY RELAY
  4. Proceed to casualty at best speed
  5. Establish comms with CRS and other vessels proceeding to distress
  6. Prepare for assist (+ rescue boat)
  7. X band for SART
  8. Additional look outs
  9. Medical station
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4
Q

Receipt of a distress message, HF in any area

A

Tune in to appropriate station. listen for comms.
DO NOT ACKNOWLEDGE
If no shore acknowledgement, relay ashore.

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5
Q

GMDSS, what is it?
Who does it apply to?

A

The Global Maritime Distress and Safety System (GMDSS) is an
internationally agreed upon

  1. set of procedures,
  2. types of equipment,
  3. communication protocols

used to increase safety and
make it easier to rescue
distressed ships, boats and aircrafts.

Subject to commercial vessels over 300 GT.

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6
Q

NAVTEX, what is it?

frequency?

A

international, automated system for distributing MSI which includes:
-(A) nav warnings
-(B) met warnings
-(D) SAR info
-(L) add. Nav warnings
opt:
-(E) Met forecasts

518 kHz

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7
Q

How would you acknowledge a mayday in the middle of the Atlantic

A
  1. Log it
  2. Inform Master
  3. Transcribe Message
  4. RT acknowledge (call + message):

MAYDAY
their C/S x3
this is my C/S x3
RECEIVED MAYDAY

Position relative to incident
my speed is..
my ETA is
I SAY AGAIN

Over

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8
Q

MAYDAY

A

grave and imminent danger, immediate assistance required.

MIPNANOO

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9
Q

MAYDAY RELAY

A

by RT
MAYDAY RELAY x3
ALL STATIONS/SHIPS x3
this is own vessel x3 C/S x3 MMSI

MAYDAY
distress vessel x3 C/S x3 MMSI
in position
Nature of distress
RIA
No. of POB
Over

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10
Q

Sea Area A1

A

Area A1 is an area within coverage of at least one VHF coast station in which continuous DSC alerting is available, i.e. approx. 20-30 miles, or line-of-sight, from coasts.

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11
Q

Sea Area A2

A

Area A2 excludes Area A1 but is within coverage of a shore-based MF coast station, i.e. approx. 100 miles.

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12
Q

Sea Area A3

A

Area A3 excludes Areas A1 and A2 but is within coverage of an INMARSAT geostationary satellite in which continuous alerting is available.

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13
Q

Sea Area A4

A

🔹 Sea Area A4

Outside A1, A2 and A3
- No fixed distance — mainly the polar regions
- Beyond Inmarsat coverage (high latitudes)
- HF radio only

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14
Q

Minimum equipment for GMDSS ships
(list 6)

A
  • VHF RADIO - DSC channel 70, +
    RT channels 16, 13 and 6.
  • 2 x SARTs if over 500 GT.
  • EPIRB (406 mHz)
  • PORTABLE VHFs for use in survival craft
    ( x 3 if > 500 GT.)
  • NAVTEX receiver (518 kHz)
  • Inmarsat EGC receiver, if the ship is engaged on voyages in Sea Area A3.
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15
Q

Daily Tests & Checks
(4)

A
  1. Test all DSC equipment (internal)
  2. Battery state of charge
  3. Printers (including NAVTEX)
  4. > > Radio Log
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16
Q

Weekly Tests & Checks
(4)

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A
  1. Test all DSC equipment (external) with local CS
  2. Reserve source of power
  3. Survival Craft hand held VHFs
  4. > > Radio Log
17
Q

Monthly Tests & Checks
(5)

Study These Flashcards
A
  1. EPRIBs
  2. SARTs
  3. Batteries
  4. Antennas + insulators
  5. > > Radio log
18
Q

Secondary means of distress alert in all sea areas?

19
Q

What is a NAV AREA?

How many are there?

Study These Flashcards
A

maritime geographic areas where specific governments are responsible for broadcasting navigational warnings.

There are 21 NAV areas

20
Q

What is MSI?

Study These Flashcards
A

Maritime Safety Information is a crucial part of the Global Maritime Distress and Safety System (GMDSS)

It provides mariners with nav and met warnings, forecasts, and other urgent safety-related messages

21
Q

What is a MET area

Study These Flashcards
A

Simliar to a NAV AREA.
a geographically defined sea area used for coordinating the transmission of meteorological information (marine forecasts and warnings) to ships,

22
Q

What is Sea Area A1?

Study These Flashcards
A
  • Within VHF coastal radio coverage - Normally up to 20 to 30 nautical miles from shore - VHF DSC coverage
23
Q

What is Sea Area A2?

Study These Flashcards
A
  • Beyond Sea Area A1 - Within MF coastal radio coverage - Roughly 30 to 150 nautical miles from shore - MF DSC coverage
24
Q

What is Sea Area A3?

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A
  • Beyond Sea Areas A1 and A2 - Within Inmarsat satellite coverage - From about 150 nautical miles to near worldwide - Excludes polar regions
25
What is Sea Area A4?
- Outside Sea Areas A1 A2 and A3 - Mainly polar regions - No VHF MF or Inmarsat coverage - Distress communications by HF radio
26
What is NAVTEX?
- Coastal MSI broadcast system - Uses MF radio 518 kHz and 490 kHz - Range about 200 to 400 nautical miles from shore - Used for navigational warnings - Used for weather warnings - Used for SAR information - Works only in Sea Areas A1 and A2 - Coverage limited to coastal stations
27
What is Inmarsat SafetyNET?
- Satellite based MSI broadcast service - Uses Inmarsat satellite system - Provides worldwide coverage except polar regions A4 - Used for navigational warnings - Used for meteorological warnings - Used for long range MSI - Covers Sea Area A3
28
What is Inmarsat C?
- Satellite terminal equipment onboard - Used to receive SafetyNET messages - Used to send distress alerts - Used to receive distress alerts - Used to send data telex and position reports - SafetyNET is the broadcast service - Inmarsat C is the equipment that receives it and sends distress
29
What is the difference between a call sign and an MMSI number?
- Call sign is an alphanumeric identification allocated by the flag state for voice radio communication - Call sign is used when calling a vessel by voice on VHF MF or HF - Call sign identifies the ship by name and radio identity - MMSI is a nine digit Maritime Mobile Service Identity number - MMSI is used for digital selective calling and AIS communications - MMSI is transmitted automatically with distress alerts and DSC calls - Call sign is mainly for voice communication - MMSI is mainly for digital and automated communication
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