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Linglis OOW Oral prep study > GMDSS > Flashcards

GMDSS Flashcards

1
Q

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)

A
  1. 2187.5/2182 (R/T)
  2. 2189.5
  3. 2177
  4. 2177
  5. 2048
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2
Q

What are the HF DSC frequencies for Distress Alerting, DSC and R/T

A

4MHz
6MHz
8414.5 KHz (preferred DSC)
8291 KHz (preferred R/T)
12 MHz
16 MHz

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3
Q

In what publication do we find HF stations for Alerting/calling/announcements?

A

BPG ‘A’checklist
IAMSAR Vol 3
ALRS Vol 5
ALRS vol 1

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4
Q

What is the primary VHF inter ship routine channel/communications between Ships and Aircraft

A

Ch 06

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5
Q

What is the ship-ship safety of navigation channel

A

Ch 13

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6
Q

Satellite Special access code 32

A

what shall we do?
Medical Advice

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7
Q

Satellite Special access code 38

A

Evacuate
Medical Assistance

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8
Q

Satellite Special access code 39

A

999 Coastguard
Maritime assistance (example, oil spill)

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9
Q

Satellite Special access code 41

A

Rain and sun
Weather obvs

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10
Q

Satellite Special access code 42

A

It might hurt you!
Navigational warning

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11
Q

Satellite Special access code 43

A

Where are we?
AMVER or ships positions reports

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12
Q

MMSI codes:
0
00
4
7
970
111

A

0 Group call
00 coast station
Inmarsat C
Inmarsat FBB
AIS sart
SAR aircraft

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13
Q

MSI frequencies
518kHz
490kHz
4209.5kHz
1.5/1.6GHz

A

Navtex international (english)
Navtex local language
Navtex tropical
Inmarsat and EGC Safety Net

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14
Q

Frequencies for:
EPIRB Alerting
EPIRB Homing
SART

A

406 MHz (All sea areas)
121.5 MHz
9-10 GHz (x band 3cm)

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15
Q

Maximum power output for:
VHF
MF
HF

A

25 W
400 W
1500 W (1.5Kw)
Always use the minimum power necessary for RELIABLE communications

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16
Q

Why do we not call between ships on duplex?

A

Ship stations cannot hear duplex transmissions

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17
Q

How long do we wait between routine calls on VHF?

A

Call-2 mins-call-2mins-call-3mins

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18
Q

The four inter-ship routine VHF channels

A

06 Primary
08 Secondary
72
77

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19
Q

On board communication VHF channels

A

15/17

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20
Q

Who does GMDSS apply to

A

> 300 GT, on an international voyage
<300GT, carrying 12 or more passengers

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21
Q

Sea area operation requirements

A
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22
Q

Daily tests

A

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

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23
Q

Weekly tests

A

Run emergency power supply if other than battery (generator)
test of DSC equipment by test call to a CS (VHF/MF/HF)
Test of Handheld Emergency GMDSS VHF units

24
Q

Monthly tests

A

TEST EPIRB and SART
Check EPIRB and SART for security and damage

Performance verification test of Sat C

Inspect battery system, boxes, framework, connections, SG check (1.265)
Comparison on and off load
Inspect antennas for damage

25
Q

Documents to be carried by GMDSS compliant vessels

A

Radio log book

Ships license

Certificates of radio operators

AMLRS vol 1-6

ITU List of Ships Stations and Maritime Service Identity Assignments

ITU list of Coast Stations and Special Service Stations

Copy of the Post Office Act 1884

26
Q

Distress MESSAGE Format

A

Mayday
Identity (name, Call Sign, MMSI)
Position
Danger (nature)
Assistance
Number of Persons
Information (any other information)
Over

Numbers are always said in the format TWO-FOUR, not Twenty Four

27
Q

When may a station transmit a Distress Relay Alert

A

After receiving a distress alert that has not been acknowledged within 5 minutes

When a vessel in distress is unable to make the alert themself

When the controlling station or MRCC decides further assistance is required

28
Q

Distress Alert Relay format (Call and Message)

A

Mayday relay x 3
All Stations/CS x 3
This is
Name x 3 (own vessel)
Call Sign
MMSI

Mayday x1
Name + Callsign +MMSI (vessel in danger)
Position
Danger (nature)
Assistance required
Number of persons
Information (other)
Over

29
Q

How would a CS alert ships to a distress in their area?

Far from their area?

A

DSC Mayday alert relay to:
All ships
Group of ships
Geographical Area
Specific Vessel

Distress alert relay through satellite, EGC through Inmarsat C

30
Q

In Acknowledging VHF/MF DSC distress Area A1-A2 you would:

A

Wait a short period to allow MRCC to do so

31
Q

Acknowledging VHF/MF DSC Distress Area A3-A4
In the vicinity of the distress

A

Listen to message, Acknowledge Immediately by R/T and inform an MRCC

32
Q

Acknowledging HF DSC?

A

do not do by any means whatsoever, set watch to R/T frequency, if no acknowledgement by MRCC or no subsequent communications, relay the distress alert by any means (HF or Satellite)

33
Q

False DSC alert Procedure

A
  1. Let Alert Finish
  2. Stop it from repeating
  3. Cancel alert by R/t giving your MMSI number
  4. Inform an MRCC or CS by any means necessary
34
Q

Where should we address MF/HF DSC distress alert relays, urgency, safety announcements?

A

Geographical area or specific group or individual station

35
Q

DSC CALLS should be repeated when?
And if not acknowledged a second time?

A

After 5 minutes
After 15 Minutes

36
Q

Direct/Space wave
Ground wave
Sky wave

A

VHF
MF
HF

37
Q

What is contained in:
ALRS Vol. 1

A

Coast Radio Stations (public correspondence)

38
Q

What is contained in:
ALRS Vol 5.

A

Global Maritime Distress and Safety System

39
Q

What is contained in:
ALRS Vol. 6

A

Pilot Services and Port Operations

40
Q

ITU documents

A

Interco (international code of signals)
List of ship stations

List of special services and radio determination stations

Manual for the Maritime Mobile Service and Mobile Satellite Service

41
Q

Which Communications equipment uses printers

A

NAVTEX

DSC

SAT C

42
Q

What are the NAVTEX permanently selected messages and RECOMMENDED messages to select

A

A. Navigational Warnings
B. Meteorological Warnings
D. SAR Information
E. Meteorological Forecasts
L. Additional Navigational Services

43
Q

Letters on NAVTEX controller functions
F
D
S
P

A

Forward paper
Dimmer
Silence alarm
Power

44
Q

What is an NCS

A

network co-ordination station
Responsible for overall frequency, line allocation and traffic management of a region for the Maritime Mobile Satellite Service (MMSS)

45
Q

What is GMDSS?

(This could also be considered to be the contents of ALRS Vol 5)

A

An internationally agreed upon set of standards and procedures, to allow for:

Alerting (inc. Position)
SAR co-ordination
Locating (homing)
Maritime Safety Information Broadcasts
General Communications
Bridge-Bridge Communications

46
Q

What is NAVTEX?

A

A tech space receiver, that receives MSI through the MF radio band width.

47
Q

What is DSC?

A

Digital Selective calling, an automatic means of sending alerts/announcements/calling

48
Q

A fully charged Battery Should read how many volts per cell?
Therefore, a 24 v battery should read:

A

24v battery has 12 cells
2.25v per cell
27 volts

49
Q

Minimum Carriage Requirements (to meet with SOLAS)

A

VHF radio station capable of transmitting DSC on 70, and RT on 16,13, and 06

One SART if <500gt, Two SARTS if >500gt

TWO Portable VHF transceivers if <500gt, THREE if >500gt

NAVTEX when operating in NAVTEX areas

Inmarsat C EGC receiver, when in areas not covered by NAVTEX and HF

50
Q

Carriage requirements based on Areas of Operation:

A

A1- 20-30Nm
VHF and DSC

A2 - Approx 100nm
MF, VHF DSC

A3, Coverage of INMARSAT geostationary satellites
VHF, MF, DSC and INMARSAT c

A4, 70°N and 70° S
VHF, MF, HF, DSC, INMARSAT c

51
Q

What are the SES stations for Inmarsat C

A

Atlantic Ocean Region West
Atlantic Ocean Region East
Indian Ocean
Pacific Ocean

52
Q

Three ways of ensuring Availability of Ship Station Equipment:

A

At sea electronic Maintenance
Shore based Maintenance Certificate
Duplication of Equipment

53
Q

Actions on encountering flares:

A

Take a bearing of flares
Mayday relay
Inform Master
Proceed at best speed on instruction from Master
Post additional Lookouts with Binoculars
X band radar on and tuned for SART
RB and medical crew ready
Consult IAMSAR Vol 3, ships SMS and contingency guides
Log events

54
Q

What is an MMSI

A

A Maritime Mobile Service Identity Number

55
Q

What is the ITU

A

International Telecommunications Union

Linglis OOW Oral prep study (48 decks)

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