Тест по Officers onboard about Radio Communication (GMDSS) (CES v6.0)

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Правильные ответы:
1

The different layers in the ionosphere, important for radio propagation, are effected by:

Ваш ответ правильный:

The Sun.
2

At the end of a radio telex-connection, when a “store and forward” message has been transmitted, the coast-station at least gives a:

Ваш ответ правильный:

Time (in UTC) whereupon the telex for the subscriber is delivered.
3

On which frequency a ship must maintain a continuous watch when sailing in area A2?

Ваш ответ правильный:

2 187,5 kHz.
4

On area A1 the function “Transmission of ship to shore distress alerts” is mainly based on:

Ваш ответ правильный:

The use of VHF DSC.
5

When on HF band a DSC distress alert is received, you have to listen to:

Ваш ответ правильный:

The radio telephony distress frequency in the band in which the DSC distress alert was received.
6

The “clarifier” has only effect during:

Правильный ответ:

Receiving in mode J3E.

Ваш ответ:

Transmitting in mode J3E.
7

Your vessel is not in distress and not taking part in a distress operation. How would you impose radio silence on vessels which are interfering the distress traffic?

Ваш ответ правильный:

Seelonce Distress.
8

Define the class of emission H3E:

Ваш ответ правильный:

Radiotelephony – Single sideband full carrier.
9

The frequency 121,5 MHz is used for:

Ваш ответ правильный:

SARSAT-COSPAS EPIRBS.
10

The type-indication of the radio set is mentioned in:

Ваш ответ правильный:

The safety certificate.
11

What do you do after receiving a VHF DSC DISTRESS call?

Ваш ответ правильный:

You set watch on VHF channel 16.
12

For a DSC-connection (no “distress alert”) with another vessel the following frequencies are used:

Ваш ответ правильный:

TX: 2 177,0 kHz RX: 2 177,0 kHz.
13

Is it necessary to state the accounting code of the vessel in fully automated radio telex-traffic with a coast-station?

Ваш ответ правильный:

Yes.
14

On the MF/HF transmitter-receiver there is a sensitivity control. Another name for this is:

Правильный ответ:

RF-gain.

Ваш ответ:

AF-gain.
15

What is SITREP an abbreviation for:

Ваш ответ правильный:

Situation Report.
16

The correct functioning of a DSC-modem can be checked by means of:

Ваш ответ правильный:

The built-in test facility in the modem.
17

Which type of call will be sent by a ship adrift and needing the assistance of a tug? The weather is not bad and the ship will be aground 24 hours later.

Ваш ответ правильный:

Urgent call.
18

The distress message is used when the vessel is threatened by a serious and imminent danger and is in need of immediate assistance. What is the telegraphy and telephony distress message like?

Ваш ответ правильный:

S O S (Telegraphy) / MAYDAY (Telephony).
19

DSC uses for automatic identification the MMSI. The identification 002442000 is assigned to:

Ваш ответ правильный:

A coast-station or coast guard-station.
20

VHF channel 6 is:

Ваш ответ правильный:

Inter-ship channel.
21

The effect of reflection of the radio waves in the ionosphere on the range depends on:

Ваш ответ правильный:

The amount of ionisation.
22

Define the class of emission G3E:

Ваш ответ правильный:

Radiotelephony – Phase Modulation.
23

At what minimum height above sea level a SART transponder must be mounted?

Ваш ответ правильный:

1 metre.
24

Command of radio-traffic between vessels and coast stations lies:

Ваш ответ правильный:

Always with the coast station.
25

The following information must be given on the SART:

Ваш ответ правильный:

Date of replacement of the batteries.
26

According to the rules of GMDSS all vessels have to be equipped with:

Ваш ответ правильный:

A possibility to receive MSI.
27

The prescribed test of EPIRB, SART and portable VHF radio set must be entered in:

Ваш ответ правильный:

Ship’s radio log.
28

If a coast-station doesn’t answer a call on VHF working channel or doesn’t send a reply signal:

Правильный ответ:

You must call on another working channel.

Ваш ответ:

You can repeat your call after 2 minutes.
29

What do you understand by the initials EPIRB?

Ваш ответ правильный:

This means: Emergency Position Indicating Radio Beacon.
30

The impedance of a coax cable for the VHF-set depends on:

Ваш ответ правильный:

The structure dimensions and the material of the coax cable.
31

What does the abbreviation DSC means?

Правильный ответ:

Digital Selective Call.

Ваш ответ:

Distress and safety call.
32

Silencing by a station, not in charge of the distress-traffic, is done as follows:

Правильный ответ:

“SEELONCE DISTRESS” followed by the silencing station’s call-sign.

Ваш ответ:

“SILENCE DISTRESS” followed by call sign of the ship in distress.
33

The display of the DSC-controller on board is showing the following lines: RX: 002442000; CH87; D Sellcall Routine. We’re asked to listen on:

Ваш ответ правильный:

VHF-channel 87.
34

Is it necessary to state the accounting code of the vessel in fully automated radio telex-traffic with a coast-station?

Ваш ответ правильный:

Yes.
35

For how long time should a “SARSAT COSPAS” epirb be able to operate on its batteries?

Ваш ответ правильный:

48 hours.
36

A VHF transmission range is mainly determined by:

Ваш ответ правильный:

The height of the aerial.
37

If messages are received which aren’t intended for own ship:

Ваш ответ правильный:

They must not be used for any purpose.
38

The whip-antenna of the MF transceiver was lost in bad weather. The MF transceiver can be used again:

Ваш ответ правильный:

If the whip-antenna is replaced by an antenna of about the same length as the original one.
39

The compulsory testing of a prescribed EPIRB is to be done:

Ваш ответ правильный:

Once a month.
40

A battery of 24 Volt supplies during 10 hours a current of 6 ampere. What is the capacity supplied?

Ваш ответ правильный:

60 Ah.
41

What are the NAVTEX messages categories which cannot be suppressed?

Ваш ответ правильный:

A, B, D.
42

MF communication is usually provided by:

Ваш ответ правильный:

Ground wave.
43

On area A1 the function “Reception of shore to ship distress alerts” is mainly based on:

Ваш ответ правильный:

The use of VHF DSC.
44

The ship-shore HF-telephone-channel 2 228 consists of the frequencies 22 081,0 kHz and 22 777,0 kHz. In case of manual operation, one should tune the receiver on:

Ваш ответ правильный:

22 777,0 kHz.
45

On board they want to have a dial-phone call via Inmarsat with the Apollogracht. In the guides the following ID’s are found for the Apollogracht: 344320000, 424432010, 424432020, 1300210, 36715. What ID should be chosen?

Ваш ответ правильный:

1300210.
46

With what system is a NAVTEX-message transmitted?

Ваш ответ правильный:

FEC.
47

The altitude effect of the reflection of radio waves in the ionosphere on the transmission range also depends on:

Ваш ответ правильный:

The day/night situation.
48

In what HF-band is long distance transmission possible when both stations are located in Darkness?

Ваш ответ правильный:

8 MHz.
49

What mode must be used on the MF/HF transmission when making a radiotelephone call?

Ваш ответ правильный:

J3E.
50

An area within the radiotelephone coverage of at least one VHF coast station in which continuous DSC alerting is available is called:

Ваш ответ правильный:

A1.
51

By the degree of selectivity of a receiver is meant:

Ваш ответ правильный:

Ability to make weak stations audible.
52

The prescribed test of an approved portable VHF radio set (portophone) must be done once a:

Ваш ответ правильный:

Month.
53

Which of the following frequency bands would most likely provide reliable communication between two stations that are 15 miles apart?

Ваш ответ правильный:

The Very High Frequency (VHF) band.
54

If a ship in the MF-band wants to have a DSC-connection with a coast-station (no “distress alert” or a test alert) the following frequencies are chosen:

Ваш ответ правильный:

TX: 2 189,5 kHz RX: 2 177,0 kHz.
55

A distress-call, onboard via RCC, may only be given Receipt if:

Ваш ответ правильный:

The OOW deems it necessary.
56

Which equipment will detect a signal from a SART transponder?

Правильный ответ:

S band radar.

Ваш ответ:

X band radar.
57

For how long time should a SART transponder be able to operate in the active mode?

Ваш ответ правильный:

8 hours.
58

What is the meaning of the abbreviation “RQ” at the end of a DSC sequence?

Ваш ответ правильный:

Acknowledgement request.
59

Dish aerials are used with:

Ваш ответ правильный:

Inmarsat-B and -M.
60

The type of Inmarsat station A, B, C, M is recognized by:

Ваш ответ правильный:

The first digit of the identification.
61

The authority to order the use of distress signal or distress alerts is:

Ваш ответ правильный:

Only with the master.
62

Long distance communication in the HF-bands depends on:

Ваш ответ правильный:

Ionisation layers.
63

If requested by a coastal radio station to participate in a rescue operation, what is the most important information you may give?

Ваш ответ правильный:

Your position, name, call sign and speed.
64

Give the command after ga + for the transmission of a “store and forward”-message with radio-telex:

Ваш ответ правильный:

tlx..+.
65

You receive a distress alert on HF Radio. What should you do?

Ваш ответ правильный:

Wait three minutes and if no acknowledgement is heard from a coast station you should relay the alert.
66

What is the first function of GMDSS?

Ваш ответ правильный:

Transmission of ship to shore alerts.
67

At the entrance to the space where batteries are stored on board the following notice must be fitted:

Ваш ответ правильный:

No entry with naked light and/or flame.
68

On area A2 the function “Transmission of ship to shore distress alerts” is mainly based on:

Ваш ответ правильный:

The use of MF DSC.
69

Reflection of radio waves in the ionosphere depends on:

Ваш ответ правильный:

Sunspots.
70

The identification of a coast station is composed as follows:

Ваш ответ правильный:

00 followed by an MID-number and station number.
71

One can check the functioning of the SART by:

Ваш ответ правильный:

Activating the SART and checking the effect on the radar screen.
72

What statement is correct with frequency modulation?

Ваш ответ правильный:

Frequency modulation is often applied in the maritime VHF-range (band).
73

The category of a DSC-call determines:

Ваш ответ правильный:

The degree of priority.
74

With maintenance of batteries it is of primary importance that:

Ваш ответ правильный:

The space where the batteries are stored is properly ventilated.
75

In maritime communication two international treaties are primarily involved. They are:

Ваш ответ правильный:

The IMO at London and the ITU at Geneva.
76

Which of the following is a Accounting Authority Identification Code?

Ваш ответ правильный:

FR01.
77

If a ship according to the rules of GMDSS is equipped with an MF/HF radio set a DSC listening watch must be kept on:

Ваш ответ правильный:

8 414,5 kHz and on at least one of the following DSC frequencies: 4 207,5 kHz, 6 312,0 kHz, 12 577,0 kHz or 16 804,5 kHz.
78

What is the proper term used to describe a coast radio station that primarily handles chargeable ship-to-shore message traffic of a routine nature?

Ваш ответ правильный:

Public Correspondence Station.
79

When sending an OBS (weather report) with Inmarsat one should use Service Code “41”. With this address the weather report will always be transmitted to:

Ваш ответ правильный:

The meteorological station connected with the CES used.
80

The word SHIP is spelled conform the international phonetic alphabet:

Ваш ответ правильный:

Sierra, Hotel, India, Papa.
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