Test for Officers onboard about Radio Communication (GMDSS) (CES v6.0)

Test results

The test consisted of 80 random questions.
Total questions on this topic: 198
Your result: 85%
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Right answers:
1

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?:

Your answer is correct: Public Correspondence Station.
2

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:

Your answer is correct: The meteorological station connected with the CES used.
3

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

Correct answer: J3E.
Your reply: J2B.
4

The typical “daylight-frequencies” for long distance transmission are located in the:

Your answer is correct: 16 or 22 MHz-band.
5

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

Your answer is correct: 60 Ah.
6

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

Your answer is correct: Adjust the threshold level for admitting signals and refusing noise.
7

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

Your answer is correct: 8 hours.
8

The word SHIP is spelled conform the international phonetic alphabet:

Your answer is correct: Sierra, Hotel, India, Papa.
9

The Satellite orbit in the Cospas-Sarsat system is:

Your answer is correct: Polar.
10

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

Your answer is correct: The trading sea areas.
11

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.
12

The ideal aerial length depends on:

Your answer is correct: The frequency chosen.
13

A VHF transmission range is mainly determined by:

Your answer is correct: The height of the aerial.
14

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

Your answer is correct: Wait three minutes and if no acknowledgement is heard from a coast station you should relay the alert.
15

Which of the following frequencies is used by the NAVTEX system?:

Your answer is correct: 518 kHz.
16

The category of a DSC-call determines:

Your answer is correct: The degree of priority.
17

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

Your answer is correct: The ITU List of Coast Station.
18

MF communication is usually provided by:

Correct answer: Ground wave.
Your reply: Sky wave.
19

What does the abbreviation VHF means?:

Your answer is correct: Very High Frequency.
20

By FleetNET communication is understood:

Your answer is correct: An EGC-message destined for ships with the same group call number.
21

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

Your answer is correct: Wait until the coast-station calls again.
22

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

Your answer is correct: The use of VHF DSC.
23

With an Inmarsat-C installation there is the addressing-option “special”. Via this option:

Correct answer: Give one of Inmarsat’s “special access codes”.
Your reply: You can plan a message to be delivered at a special time.
24

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

Your answer is correct: 2 182 Hz.
25

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:

Your answer is correct: 22 777,0 kHz.
26

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

Your answer is correct: NAVTEX and EGC-receiver.
27

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

Your answer is correct: You set watch on VHF channel 16.
28

Define the class of emission G3E:

Correct answer: Radiotelephony – Phase Modulation.
Your reply: Radiotelephony – Frequency Modulation.
29

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

Your answer is correct: 1 metre.
30

What do you understand by the initials EPIRB?:

Your answer is correct: This means: Emergency Position Indicating Radio Beacon.
31

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 reply: Pertinent navigational and weather information.
32

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

Your answer is correct: 2 187,5 kHz.
33

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

Correct answer: The Sun.
Your reply: The distance between the transmitter and the receiver.
34

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

Correct answer: The first digit of the identification.
Your reply: The first two digits of the identification.
35

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.:

Your answer is correct: Urgent call.
36

When a satellite receives a “distress alert” from a Cospas-Sarsat EPIRB, the relay of the “distress alert” can be delayed because the satellite cannot immediately contact a:

Your answer is correct: LUT before the satellite is actually seen by this ground station.
37

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

Your answer is correct: They must not be used for any purpose.
38

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

Your answer is correct: The detonating gas can be discharged.
39

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

Your answer is correct: Nothing or a special character will be printed.
40

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

Your answer is correct: TX: 2 177,0 kHz RX: 2 177,0 kHz.
41

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

Your answer is correct: 150 mtr.
42

A VHF transmission range is mainly determined by:

Your answer is correct: The height of the aerial.
43

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

Your answer is correct: The use of MF DSC.
44

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

Your answer is correct: 15 m.
45

Modulation is:

Your answer is correct: Blending LF & HF signals.
46

VHF channel 6 is:

Your answer is correct: Inter-ship channel.
47

The following information must be given on the SART:

Your answer is correct: Date of replacement of the batteries.
48

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

Correct answer: A possibility to receive MSI.
Your reply: On both sides an EPIRB.
49

The MERSAR is:

Your answer is correct: A book of directions for search and rescue at sea.
50

Of the AM-signal:

Your answer is correct: Amplitude is variable and frequency of the carrier wave is constant.
51

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

Your answer is correct: The radio telephony distress frequency in the band in which the DSC distress alert was received.
52

A vessel is equipped for all sea areas. In the middle of the Indian Ocean the EGC-receiver appears out of order. Is it still possible to receive MSI-messages?:

Your answer is correct: Yes, with the MF/HF-radio telex.
53

The propagation of radio-signals in the VHF-band is:

Correct answer: Almost rectilinear.
Your reply: Dependent on the power emmited and the temperature of the atmosphere.
54

Inmarsat is short for:

Your answer is correct: International Maritime Satellite Organisation.
55

What statement is correct with frequency modulation?:

Your answer is correct: Frequency modulation is often applied in the maritime VHF-range (band).
56

Long distance communication in the HF-bands depends on:

Your answer is correct: Ionisation layers.
57

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

Your answer is correct: Only with the master.
58

Which of the following is a coast station MMSI?:

Your answer is correct: 2275300.
59

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

Your answer is correct: 2 digit code telex services.
60

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

Your answer is correct: G3E.
61

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?:

Your answer is correct: Seelonce Distress.
62

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

Your answer is correct: tlx..+.
63

With maintenance of batteries it is of primary importance that:

Your answer is correct: The space where the batteries are stored is properly ventilated.
64

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.
65

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

Correct answer: Month.
Your reply: Week.
66

The “clarifier” has only effect during:

Your answer is correct: Receiving in mode J3E.
67

MUF stands for:

Correct answer: Highest possible frequency that will be reflected by the ionosphere.
Your reply: Most effective frequency, to make a connection with an HF-transmitter.
68

What is SITREP an abbreviation for:

Your answer is correct: Situation Report.
69

A wire aerial for an MF/HF-transmitter must be suspended between isolators:

Your answer is correct: To prevent contact with earth.
70

What information has to be given to set up a radio telex-connection with a coast-station:

Correct answer: ARQ followed by the coast-station’s ID-number.
Your reply: Telex number of the coast station.
71

What is the first function of GMDSS?:

Your answer is correct: Transmission of ship to shore alerts.
72

Under GMDSS rules the trading area A1 can be considered to be:

Your answer is correct: Within range of VHF coast radio stations.
73

Define the class of emission H3E:

Your answer is correct: Radiotelephony – Single sideband full carrier.
74

With an EPIRB:

Your answer is correct: You must check the date the battery must be replaced.
75

In the Maritime Radio Traffic the order of priority is:

Your answer is correct: Distress traffic, urgency traffic, safety traffic.
76

Sea area A4 is in maritime radio traffic sea area:

Your answer is correct: Outside the sea areas A1, A2 and A3.
77

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.
78

Reflection of radio waves in the ionosphere depends on:

Your answer is correct: Sunspots.
79

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

Your answer is correct: 121,5 MHz and/or 243,0 MHz.
80

What are the NAVTEX messages categories which cannot be suppressed?:

Your answer is correct: A, B, D.