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

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The test consisted of 80 random questions.
Total questions on this topic: 198
Your result: 26%
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Right answers:
1

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

Correct answer:

12 MHz.

Your Answer:

16 MHz.
2

In the Inmarsat Maritime Communications Handbook one can find information about:

Correct answer:

2 digit code telex services.

Your Answer:

Ship’s Inmarsat Id’s.
3

A distress alert on board may only be transmitted on explicit order of:

Correct answer:

The captain.

Your Answer:

The radio officer.
4

What does the abbreviation DSC means?

Correct answer:

Digital Selective Call.

Your Answer:

Distress Selective Call.
5

On board you have to switch from transmitting to receiving and vice versa. The shore station can transmit and receive simultaneously. You are working with two different frequencies. This method is called:

Your answer is correct:

Semi-duplex.
6

Dish aerials are used with:

Correct answer:

Inmarsat-B and -M.

Your Answer:

Inmarsat-C and -M.
7

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

Correct answer:

tlx..+.

Your Answer:

sta…+.
8

The MF/HF-transceiver on board is tuned to the assigned frequency of a station. To make this connection the following mode is used:

Your answer is correct:

J3E.
9

The safety message announces that a station:

Correct answer:

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

Your Answer:

Is going to be under repairs.
10

Which wave length applies to a frequency of 2 000 kHz?

Correct answer:

150 mtr.

Your Answer:

15 000 mtr.
11

A DSC distress alert is received. The message states that communication by radiotelex is prefered. One preferably uses:

Correct answer:

FEC mode.

Your Answer:

JRC mode.
12

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

Correct answer:

The time of transmission.

Your Answer:

The mode of transmission.
13

Inmarsat is short for:

Correct answer:

International Maritime Satellite Organisation.

Your Answer:

International Maritime Satellite System.
14

The log-in of an Inmarsat-C installation is important:

Your answer is correct:

To inform the NSC that one is available for messages offered.
15

What is the acronym FR 01?

Correct answer:

AAIC.

Your Answer:

Call sign.
16

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:

Correct answer:

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.

Your Answer:

2 187,5 kHz, 8 414,5 kHz and for instance 12 577,0 kHz.
17

The word SATCOM is spelled conform the international phonetic alphabet:

Correct answer:

Sierra, Alfa, Tango, Charlie, Oscar, Mike.

Your Answer:

Sierra, Able, Tripoli, Charlie, Oscar, Mike.
18

Which of the following is a coast station MMSI?

Correct answer:

2275300.

Your Answer:

227530000.
19

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:

Correct answer:

You must wait 3 minute minimum before repeating your call.

Your Answer:

You must wait 5 minutes before repeating the call.
20

VHF channel 15 is:

Correct answer:

Inter-ship channel.

Your Answer:

Public traffic channel.
21

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

Correct answer:

The amount of ionisation.

Your Answer:

The correct adjustment of the dimmer.
22

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

Your answer is correct:

The first digit of the identification.
23

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

Your answer is correct:

Month.
24

Via Inmarsat-C a message is sent to an Inmarsat-C mailbox with a positive delivery notification (PDN). The ground station will:

Correct answer:

Send a PDN, if the message has arrived in the mailbox.

Your Answer:

send no PDN’s with messages intended for the mailbox.
25

What is the emergency frequency on MF (Medium Frequency) radio?

Correct answer:

2 182 Hz.

Your Answer:

2 617 Hz.
26

An EPIRB has been activated accidentally. Which of the following is correct for cancelling the false distress alert?

Correct answer:

Call the nearest coast station and inform it that a false distress alert has been transmitted.

Your Answer:

Send a distress priority VHF DSC call and make broadcast to all stations.
27

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

Your answer is correct:

The safety certificate.
28

To choose the HF-band, the time difference between 2 stations:

Correct answer:

Is important.

Your Answer:

Is hardly relevant.
29

The exact position of a 406 MHz COSPAS SARSAT EPIRB is eventually calculated by:

Correct answer:

The satellite.

Your Answer:

LUT.
30

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

Correct answer:

The use of VHF DSC.

Your Answer:

The use of SARSAT COSPAS Epirbs.
31

What is the purpose of the radiotelephony two tone alarm?

Correct answer:

Activate bridge watchkeeping receivers and attract the attention of the person on watch.

Your Answer:

Activate bridge watchkeeping receivers.
32

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

Correct answer:

Routine.

Your Answer:

Safety.
33

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:

Correct answer:

The meteorological station connected with the CES used.

Your Answer:

MET office Washington, this office will take care of further dispatch of the weather reports.
34

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

Correct answer:

Nothing or a special character will be printed.

Your Answer:

A closely resembling character will be printed.
35

To receive distress alerting and MSI via an Inmarsat-C set vessels must have:

Correct answer:

SES or an EGC receiver.

Your Answer:

Suitable for 518 kHz NAVTEX receiver.
36

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

Your answer is correct:

5 miles.
37

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

Correct answer:

J3E.

Your Answer:

H3E.
38

A satellite receives the transmissions of the 406 MHz Cospas-Sarsat EPIRB. The transmissions of the EPIRB will be:

Your answer is correct:

Always passed on to a LUT.
39

In the Maritime Radio Traffic the order of priority is:

Correct answer:

Distress traffic, urgency traffic, safety traffic.

Your Answer:

Urgency traffic, distress traffic, safety traffic.
40

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

Correct answer:

The use of SART transponders.

Your Answer:

The use of MF DSC.
41

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

Correct answer:

The ITU List of Coast Station.

Your Answer:

The ITU List of Call signs and numerical identities of station used by the maritime mobile and maritime mobile-satellite services.
42

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

Correct answer:

You must call on another working channel.

Your Answer:

You can repeat your call after 2 minutes.
43

According to the rules of GMDSS vessels equipped for all sea areas have to be provided with:

Your answer is correct:

406,0 MHz Cospas-Sarsat EPIRB.
44

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

Your answer is correct:

A possibility to receive MSI.
45

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

Correct answer:

The use of MF DSC.

Your Answer:

The use of INMARSAT Epirbs.
46

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

Correct answer:

2 187,5 kHz.

Your Answer:

8 414,5 kHz.
47

MF communication is usually provided by:

Correct answer:

Ground wave.

Your Answer:

None of the mentioned.
48

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

Correct answer:

48 hours.

Your Answer:

12 hours.
49

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

Correct answer:

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

Your Answer:

No response is necessary providing the vessel is more than 24 hours away.
50

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

Correct answer:

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

Your Answer:

Approximate time when telex will be delivered.
51

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

Correct answer:

A1.

Your Answer:

ASN1.
52

The following information must be given on the SART:

Your answer is correct:

Date of replacement of the batteries.
53

By frequency is meant:

Correct answer:

Number of vibrations per unit of time.

Your Answer:

Wave length of a loop.
54

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

Correct answer:

15 m.

Your Answer:

150 m.
55

On area A4 the function “Transmission of ship to shore distress alerts” is mainly based on:

Your answer is correct:

The use of HF DSC and COSPAS SARSAT Epirbs.
56

What statement is correct with frequency modulation?

Correct answer:

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

Your Answer:

The frequency is constant.
57

The identification of a coast station is composed as follows:

Correct answer:

00 followed by an MID-number and station number.

Your Answer:

00 followed by an MMSI-number.
58

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

Your answer is correct:

“SEELONCE DISTRESS” followed by the silencing station’s call-sign.
59

The word CHANNEL is spelled conform the international phonetic alphabet:

Correct answer:

Charlie, Hotel, Alfa, November, November, Echo, Lima.

Your Answer:

Cornelies, Hotel, Apple, November, November, Echo, Land.
60

The Inmarsat-satellites are located:

Your answer is correct:

Above the equator.
61

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

Correct answer:

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

Your Answer:

Names of ships which, on behalf of safety at sea, are being routed by a traffic control system.
62

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

Correct answer:

Telephone.

Your Answer:

Fleetnet.
63

The word NAVTEX is spelled conform the international phonetic alphabet:

Correct answer:

November, Alfa, Victor, Tango, Echo, X-ray.

Your Answer:

November, Apple, Victoria, Tango, Echo, X-mas.
64

When a DSC-message of the “distress” category is received, in order to start distress alert communication in so far as not indicated in the alert, you will switch to VHF channel:

Your answer is correct:

16.
65

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

Your answer is correct:

The structure dimensions and the material of the coax cable.
66

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

Your answer is correct:

The use of VHF DSC.
67

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

Correct answer:

The Very High Frequency (VHF) band.

Your Answer:

The High Frequency (HF) band.
68

The frequency 121,5 MHz is used for:

Correct answer:

SARSAT-COSPAS EPIRBS.

Your Answer:

DSS VHF calls.
69

With maintenance of batteries it is of primary importance that:

Correct answer:

The space where the batteries are stored is properly ventilated.

Your Answer:

There is an absolute free access to the battery space.
70

By the degree of selectivity of a receiver is meant:

Correct answer:

Ability to make weak stations audible.

Your Answer:

Ability to distinguish weak stations from adjacent stronger stations.
71

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

Correct answer:

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

Your Answer:

If instead of the whip-antenna, another whip-antenna such as the spare VHF antenna is connected.
72

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

Correct answer:

Adjust the threshold level for admitting signals and refusing noise.

Your Answer:

Adjust the receivers volume.
73

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:

Correct answer:

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

Your Answer:

TX: 2 187,5 kHz RX: 2 182 kHz.
74

What is the two letter signal, to be used by flags, radiotelephony or radiotelegraphy, meaning “Calling All Ships”?

Correct answer:

CQ.

Your Answer:

CA.
75

Which class of emission is used for VHF radio telephony transmissions?

Correct answer:

G3E.

Your Answer:

H3E.
76

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?

Your answer is correct:

1300210.
77

The “clarifier” has only effect during:

Correct answer:

Receiving in mode J3E.

Your Answer:

Transmitting in mode J3E.
78

By FleetNET communication is understood:

Your answer is correct:

An EGC-message destined for ships with the same group call number.
79

Onboard the following message is received on the DSC controller: DOO: 245329000 CH16; S distress ack 244123000. What station sent the distress acknowledgement?

Your answer is correct:

245329000.
80

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

Your answer is correct:

No entry with naked light and/or flame.
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