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

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Правильные ответы:
1

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

Ваш ответ правильный:

Acknowledgement request.
2

After confirmation that there is no other radio-traffic, we call on a VHF working channel of a coast-station. When you don’t get any reply:

Ваш ответ правильный:

You must wait 3 minute minimum before repeating your call.
3

What is understood by carrier frequency?

Ваш ответ правильный:

The frequency actually used by transmitter and receiver.
4

The number of oscillations of a wave per seconds is called:

Ваш ответ правильный:

Frequency.
5

The safety message announces that a station:

Ваш ответ правильный:

Will relay a message concerning an important navigational or meteorological warning.
6

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

Ваш ответ правильный:

Only with the master.
7

In the Maritime Radio Traffic the order of priority is:

Ваш ответ правильный:

Distress traffic, urgency traffic, safety traffic.
8

According to the rules of GMDSS vessels are equipped with certain radio-communication devices depending on:

Ваш ответ правильный:

The trading sea areas.
9

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.
10

The batteries must be placed in a well ventilated place, so that:

Ваш ответ правильный:

The detonating gas can be discharged.
11

What does the abbreviation VHF means?

Ваш ответ правильный:

Very High Frequency.
12

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

Ваш ответ правильный:

A possibility to receive MSI.
13

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

Ваш ответ правильный:

The use of VHF DSC.
14

The MERSAR is:

Ваш ответ правильный:

A book of directions for search and rescue at sea.
15

By FleetNET communication is understood:

Правильный ответ:

An EGC-message destined for ships with the same group call number.

Ваш ответ:

A MSI-message destined for ships in specific geographical area.
16

The wavelength of a radio-signal reflected against the F-layer may be:

Ваш ответ правильный:

15 m.
17

Which of the following is a ship MMSI?

Ваш ответ правильный:

227530000.
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

By frequency is meant:

Ваш ответ правильный:

Number of vibrations per unit of time.
20

To get proper conversation discipline in maritime radio traffic:

Ваш ответ правильный:

Only necessary radio conversations are made in a concise and businesslike way.
21

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

Ваш ответ правильный:

J3E.
22

The identification of a coast station is composed as follows:

Ваш ответ правильный:

00 followed by an MID-number and station number.
23

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.
24

The “clarifier” has only effect during:

Ваш ответ правильный:

Receiving in mode J3E.
25

With an EPIRB:

Ваш ответ правильный:

You must check the date the battery must be replaced.
26

You wish to send an e-mail using the Inmarsat-C installation. The message has to be composed in:

Ваш ответ правильный:

ASCII.
27

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

Ваш ответ правильный:

The IMO at London and the ITU at Geneva.
28

A VHF transmission range is mainly determined by:

Ваш ответ правильный:

The height of the aerial.
29

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

Правильный ответ:

Month.

Ваш ответ:

Week.
30

What is the acronym FR 01?

Ваш ответ правильный:

AAIC.
31

The sensitivity of a communication receiver can be adjusted with:

Ваш ответ правильный:

RF-gain.
32

On area A3 the function “Transmission and reception of signals for locating” is mainly based on:

Ваш ответ правильный:

The use of SART transponders.
33

The normal mode of operation for each coast station shall be indicated in:

Правильный ответ:

The ITU List of Coast Station.

Ваш ответ:

The ITU List of Call signs and numerical identities of station used by the maritime mobile and maritime mobile-satellite services.
34

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

Ваш ответ правильный:

A coast-station or coast guard-station.
35

The number of oscillations of a wave per seconds is called:

Ваш ответ правильный:

Frequency.
36

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.
37

Reflection of radio waves in the ionosphere depends on:

Ваш ответ правильный:

Sunspots.
38

When a character in the NAVTEX message sent is not received in the proper way:

Ваш ответ правильный:

Nothing or a special character will be printed.
39

A SART must be visible on the ship’s radar from a distance of at least:

Ваш ответ правильный:

5 miles.
40

Automatic amplifier regulation is used for the following reasons:

Ваш ответ правильный:

With weak incoming signals distortion is reduced.
41

The traffic list of a coast-station is a list of:

Ваш ответ правильный:

Call-signs of ships for which a radio-telephone call, a telegram or another call is intended.
42

The Satellite orbit in the Cospas-Sarsat system is:

Ваш ответ правильный:

Polar.
43

The ideal aerial length depends on:

Ваш ответ правильный:

The frequency chosen.
44

A distress alert sent by Inmarsat to an RCC is sent via:

Ваш ответ правильный:

LES.
45

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:

“SEELONCE MAYDAY” followed by the silencing station’s call-sign.
46

The ID of an Inmarsat-M station on board starts with:

Правильный ответ:

6.

Ваш ответ:

3.
47

All designated SAR aircraft and civil aircraft carry equipment operating on the international aeronautical distress frequencies (amplitude modulation). The aeronautical distress frequencies are:

Ваш ответ правильный:

121,5 MHz and/or 243,0 MHz.
48

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

Ваш ответ правильный:

Ship’s radio log.
49

A Cospas-Sarsat EPIRB can be used in:

Ваш ответ правильный:

All sea-areas (A1 to A4).
50

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.
51

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

Ваш ответ правильный:

A possibility to receive MSI.
52

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

Ваш ответ правильный:

The built-in test facility in the modem.
53

On board one can use the reflections in the ionosphere by the right choice of:

Ваш ответ правильный:

The time of transmission.
54

In the traffic list a coast-station indicates that there is a radio telex-message for a vessel. To call for the message one should put in:

Правильный ответ:

After ga + the radio telex-command msg + ?

Ваш ответ:

After ga + the radio telex-command msg +.
55

How often must inspection of proper working of the EPIRB’s and SART’s take place on board? Once per:

Ваш ответ правильный:

Month.
56

Which equipment will detect a signal from a SART transponder?

Ваш ответ правильный:

X band radar.
57

The transmitting receiving method, when both stations can transmit and receive at the same time is called:

Ваш ответ правильный:

Duplex.
58

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.
59

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

Ваш ответ правильный:

RF-gain.
60

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.
61

According to the rules of GMDSS vessels one must be able to receive MSI with the aid of:

Ваш ответ правильный:

NAVTEX and EGC-receiver.
62

One can check the functioning of the SART by:

Ваш ответ правильный:

Activating the SART and checking the effect on the radar screen.
63

The squelch on the control panel of a VHF-sat serves to:

Ваш ответ правильный:

Adjust the threshold level for admitting signals and refusing noise.
64

Sea area A4 is in maritime radio traffic sea area:

Ваш ответ правильный:

Outside the sea areas A1, A2 and A3.
65

By the degree of selectivity of a receiver is meant:

Ваш ответ правильный:

Ability to make weak stations audible.
66

By wave length is understood:

Ваш ответ правильный:

The distance travelled by a radio vibration in a period.
67

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

Правильный ответ:

Once a month.

Ваш ответ:

Once in 4 years.
68

What are the NAVTEX messages categories which cannot be suppressed?

Ваш ответ правильный:

A, B, D.
69

By the term “Stand by” the operator of a coast-station means that one should:

Ваш ответ правильный:

Wait until the coast-station calls again.
70

The position of a 406 MHz Cospas-Sarsat EPIRB is:

Ваш ответ правильный:

Measured by the “dopler” shift in the signals.
71

What is the most important factor influencing the HF range?

Ваш ответ правильный:

The frequency used.
72

You want to send a DSC-call in connection with a shore telephone-call. You must choose:

Ваш ответ правильный:

Routine.
73

What does the abbreviation DSC means?

Ваш ответ правильный:

Digital Selective Call.
74

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.
75

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

Ваш ответ правильный:

The amount of ionisation.
76

Which of the following is a Accounting Authority Identification Code?

Ваш ответ правильный:

FR01.
77

What HF-band is generally suitable for long distance transmission if one of two stations is Located in twilight?

Ваш ответ правильный:

12 MHz.
78

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

Ваш ответ правильный:

The first digit of the identification.
79

Which of the following services is not provided by Inmarsat-C?

Ваш ответ правильный:

Telephone.
80

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.
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