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GMDSS > Prep > Flashcards

Prep Flashcards

1
Q

What does AF stand for?

A

Audio Frequency.

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2
Q

What does AGC stand for?

A

Automatic gain control.

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3
Q

What does AMVER stand for?

A

Automatic Mutual-Assistance Vessel Rescue Service.

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4
Q

What does AOR-E stand for?

A

Inmarsat Atlantic Ocean Region East.

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5
Q

What does AOR-W stand for?

A

Inmarsat Atlantic Ocean Region West.

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6
Q

What does CQ stand for?

A

Morse code for all stations.

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7
Q

What does CRS stand for?

A

Coast Radio Station (Terrestrial).

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8
Q

What does EPIRB stand for?

A

Emergency Position-Indicating Radio Beacon.

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9
Q

What does GMDSS stand for?

A

Global Marine Distress and Safety System.

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10
Q

What is H3E?

A

Class of RT emission.

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11
Q

What does IMN stand for?

A

Inmarsat Mobile Number.

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12
Q

What does IOR stand for?

A

Inmarsat Indian Ocean Region.

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13
Q

What is J3E?

A

Class of RT emission.

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14
Q

What does METAREA stand for?

A

Meteorological Equivalent of NAVAREA.

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15
Q

What does MMSI stand for?

A

Maritime Mobile Service identity (9-digit number).

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16
Q

What does MSI stand for?

A

Maritime Safety Information.

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17
Q

What does OPT stand for?

A

Operational Performance Testing.

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18
Q

What is R3E?

A

Class of RT emission.

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19
Q

What does RT stand for?

A

Radiotelephony

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20
Q

What does SSB stand for?

A

Single sideband.

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21
Q

What is the range of an A1 sea area?

A

20 - 50nm

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22
Q

What is the range of an A2 sea area?

A

50 - 250nm

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23
Q

What is the range of an A3 sea area?

A

76N - 76S

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24
Q

What is the range of an A4 sea area?

A
  • Out with areas A1 - A3
  • Polar region.
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25
Q

What DSC safety watch must be maintained in an A1 sea area?

A

VHF CH 70

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26
Q

What DSC safety watch must be maintained in an A2 sea area?

A

2187.5 KHz

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27
Q

What DSC safety watch must be maintained in an A3/A4 sea area?

A

8414.5 + either 4,6,12 or 16MHz

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28
Q

What frequency is Navtex (local language or specialised broadcasts)?

A

490 KHz

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29
Q

What frequency is Navtex (English)?

A

518 KHz

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30
Q

What frequency is MF DSC - Routine calls, ship-ship, shore-ship and CRS replies to ship-shore calls.

A

2177 KHz

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31
Q

What frequency is MF RT - Distress and safety working (after DSC alert)?

A

2182 KHz

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32
Q

What frequency is MF DSC - Routine ship-shore calls?

A

2189.5 KHz

33
Q

What frequency is MF DSC - Distress alerts/safety announcements?

A

2187.5 KHz

34
Q

What frequency is MF RT - Routine ship-ship calls?

A
  • 2046 KHZ
  • 2049 KHz
  • 2056 KHz
  • 2226 KHz
35
Q

What frequency is HF RT - Distress and safety working?

A

8414.5 KHz

36
Q

What frequency is HF DSC - Distress alerts/safety announcements?

A

8291 KHz

37
Q

What channel is VHF RT - Primary intership working/SAR RT traffic?

A

CH 06

38
Q

What channel is VHF RT - Intership working?

A

CH 08

39
Q

What channel is VHF RT - Onboard communications?

A

CH 13

40
Q

What channel is VHF RT - Distress and safety working/after DSC alert on CH 70

A

CH 16

41
Q

What channel is VHF RT - Onboard communications?

A

CH 17

42
Q

What channel is VHF RT - Distress alerts, safety announcements and routine calls (EPIRB)?

A

CH 70

43
Q

What channel is VHF RT - Intership working?

A

CH 72/CH 77

44
Q

What would eb the following procedures for a DSC/RT alert for subsequent traffic in sea area A1/A2?

A
  • Log info and call master
  • Monitor R/T CH 16 & frequency 2182 KHz for MAYDAY call and message.
  • Wait a short interval for CRS response.
  • Send R/T acknowledgement.
  • If no CRS response relay ashore.
45
Q

What would the following procedures for a DSC/RT alert for subsequent traffic in sea area A3?

A
  • Log info and call master
  • Monitor R/T CH 16 & frequency 2182 KHz for MAYDAY call and message.
  • Send R/T acknowledgement.
  • If no response from casualty, send relay ashore.
  • If DSC alert continues, send a DSC acknowledgement.
46
Q

What would the following procedures for a DSC/RT alert for subsequent traffic in any sea area (HF)

A
  • Log info and call master
  • Monitor R/T frequency (4/6/8/12/16 MHz) for MAYDAY call and message.
  • Wait for CRS response.
  • If no response from CRS after 5 minutes then send relay ashore.
47
Q

What are the services on FBB?

A
  • Web based service.
  • Distress alerting and voice messaging.
  • Distress chat room.
  • Urgency priority voice messaging.
  • Safety priority voice messaging.
  • MSI broadcasts.
48
Q

What frequency does an EPIRB operate on?

A

406 MHz.

49
Q

What frequency does and EPIRB use as a homing signal for aircraft?

A

121.5 MHz

50
Q

What is the battery life of an EPIRB once activated and how often does it transmit?

A
  • 48 hours after activation.
  • 0.5 sec bursts every 50 secs.
51
Q

How many SARTs are required to be carried on vessels between 300-500 tonnes?

A

1 (minimum)

52
Q

How many SARTs are required to be carried on vessels greater than 500 tonnes or passenger vessels?

A

2 (minimum)

53
Q

What should a cancellation message of a false distress message include?

A
  • Name.
  • Call sign.
  • MMSI number.
  • Position.
54
Q

What should be done after sending a false distress message?

A
  • Reset the DSC controller.
  • Make an ‘All Stations’ call on the associated RT distress and safety frequency.
  • If on INMARSAT-C make sure to send the cancellation message on the same LES as the false distress message was sent on.
55
Q

What should be done if there is no reply to a DSC routine call?

A

It may be repeated after 5 minutes. If there is still no reply, a further 15 minutes should elapse before another attempt is made.

56
Q

How many routine calls can be made to anther station?

A

Three routine calls at two-minute intervals. If there is no reply calls can be repeated thereafter at three minute intervals on VHF RT in areas of reliable communication calls may be repeated

57
Q

What are the key INMARSAT codes?

A

00 - Automatic dialing.
32 - Medical advice.
38 - Medical assistance.
39 - Maritime assistance.
41 - OBS ship-shore, reports.
42 - Navigational warnings and hazards.
43 - Ship position reports (AMVER).
91 - Automatic test.

58
Q

How is a DSC ship identified?

A

9 digits starting with 1-9

59
Q

How is a survival craft identified?

A

Call sign of vessel, can include 2 digits (not 0 to 1)

60
Q

How is a INMARSAT identified?

A

9 digits starting with 4 (SAT-C), 6 (SAT-C) and 7 (FBB).

61
Q

How is a AIS SART identified?

A

9 digits, first 3 digits (970) indicate AIS SART and 3 digits are country code.

62
Q

How is a SAR Aircraft identified?

A

Numbers commence with 111

63
Q

What are the statutory daily GMDSS tests?

A
  • Internal (non-radiating) DSC test.
  • Battery on/off load voltage check.
  • Check that printers have adequate paper supply.
64
Q

What are the statutory weekly GMDSS tests?

A
  • External (to shore station) HF DSC test call where possible.
  • Check the reserve power supply, (not battery generator).
65
Q

What are the statutory monthly GMDSS tests?

A
  • EPIRB/SART internal test and check for security and damage, battery maintenance including e.g. cell check, condition of connectors, check of the condition of antennae system, Survival craft portable VHF test (not using VHF CH16)
  • SAT-C link test & NAVTEX self-test.
66
Q

What equipment is a long wire antenna used for?

A

MF/HF

67
Q

What do insulators provide in antenna systems?

A

High resistance path to earth.

68
Q

What does a weak like do on an antenna?

A

Provides low breaking strain in the event of collision/grounding.

69
Q

What equipment is a whip antenna used for?

A

MF/HF

70
Q

What equipment is a active whip antenna used for?

A

Navtex

71
Q

What equipment is a dipole antenna used for?

A

VHF

72
Q

What equipment is a satellite antenna (prabolic/uni-directional) used for?

A

FBB

73
Q

What equipment is a satellite (omnidirectional) antenna used for?

A

INMARSAT-C

74
Q

What does volume 1 include ?

A

CRS/LES, medical advice/assistance, quarantine, pollution, privacy reports

75
Q

What does volume 2 include

A

Navigational aids, radio/radar beacons, satellite navigation systems, time signals.

76
Q

What does volume 3 include

A

MSI, CRS weather and navigational warning schedules, NAVTEX, submarine and gunnery exercises.

77
Q

What is included in volume 4

A

Meteorological observation stations

78
Q

What is included in volume 5

A

GMDSS, Navtex

79
Q

What is included in volume 6?

A

Pilot services, port operations, vessel traffic services, ship reporting systems.

GMDSS (3 decks)

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