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

Résultats de test

Le test comprenait 80 questions aléatoires.
Total de questions sur ce sujet : 198
Ton résultat: 85%
Enregistrer dans mon CV
Bonnes réponses :
1

The hydrostatic release of an EPIRB should be changed:

Votre réponse est correcte : Every 2 years.
2

What is the most important factor influencing the HF range?:

Votre réponse est correcte : The frequency used.
3

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

Votre réponse est correcte : 5 miles.
4

To get proper conversation discipline in maritime radio traffic:

Votre réponse est correcte : Only necessary radio conversations are made in a concise and businesslike way.
5

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

Votre réponse est correcte : Yes.
6

The frequency 121,5 MHz is used for:

Votre réponse est correcte : SARSAT-COSPAS EPIRBS.
7

With help of DSC a ship wants to contact a coast-station to have a question for telephone call. One has to choose from the following DSC-frequencies:

Votre réponse est correcte : TX: 8 415,0 kHz RX:8 436,5 kHz.
8

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

Votre réponse est correcte : tlx..+.
9

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

Votre réponse est correcte : Within range of VHF coast radio stations.
10

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

Votre réponse est correcte : 48 hours.
11

How are the NAVTEX areas identified?:

Bonne réponse: By two letters.
Votre Réponse: By one letter and one digit.
12

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

Votre réponse est correcte : The Very High Frequency (VHF) band.
13

Which word will precede a safety message?:

Bonne réponse: SECURITY.
Votre Réponse: PAN PAN.
14

Long distance communication in the HF-bands depends on:

Votre réponse est correcte : Ionisation layers.
15

Reflection of radio waves in the ionosphere depends on:

Bonne réponse: Sunspots.
Votre Réponse: The propagation speed of propagation.
16

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

Votre réponse est correcte : The first digit of the identification.
17

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

Bonne réponse: Time (in UTC) whereupon the telex for the subscriber is delivered.
Votre Réponse: Code in letters which will be repeated when the telex has been delivered to the subscriber.
18

The “clarifier” has only effect during:

Votre réponse est correcte : Receiving in mode J3E.
19

By frequency is meant:

Votre réponse est correcte : Number of vibrations per unit of time.
20

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

Votre réponse est correcte : 2 182 Hz.
21

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

Votre réponse est correcte : The ITU List of Coast Station.
22

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

Votre réponse est correcte : 518 kHz.
23

The Inmarsat-satellites are located:

Votre réponse est correcte : Above the equator.
24

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

Votre réponse est correcte : Send a PDN, if the message has arrived in the mailbox.
25

Inmarsat is short for:

Votre réponse est correcte : International Maritime Satellite Organisation.
26

In radio-telex distress traffic preference is given to FEC because:

Votre réponse est correcte : Everybody can read along.
27

With an EPIRB:

Votre réponse est correcte : You must check the date the battery must be replaced.
28

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

Votre réponse est correcte : The use of VHF DSC.
29

What is SITREP an abbreviation for:

Votre réponse est correcte : Situation Report.
30

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

Votre réponse est correcte : NAVTEX and EGC-receiver.
31

Sea area A4 is in maritime radio traffic sea area:

Votre réponse est correcte : Outside the sea areas A1, A2 and A3.
32

The DSC-controller display the following: DOO: 244562000 CH16; S distress sinking. After receiving this DSC message the following is done immediately:

Bonne réponse: Listen out on VHF channel 16.
Votre Réponse: Send a “distress alert relay”.
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:

Votre réponse est correcte : VHF-channel 87.
34

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:

Bonne réponse: LUT before the satellite is actually seen by this ground station.
Votre Réponse: LES before the satellite is actually seen by this ground station.
35

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?:

Votre réponse est correcte : Yes, with the MF/HF-radio telex.
36

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:

Votre réponse est correcte : 16.
37

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?:

Votre réponse est correcte : S O S (Telegraphy) / MAYDAY (Telephony).
38

Which equipment will detect a signal from a SART transponder?:

Votre réponse est correcte : S band radar.
39

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

Votre réponse est correcte : The OOW deems it necessary.
40

MUF stands for:

Votre réponse est correcte : Highest possible frequency that will be reflected by the ionosphere.
41

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

Bonne réponse: 245329000.
Votre Réponse: 244123000.
42

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

Votre réponse est correcte : Measured by the “dopler” shift in the signals.
43

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

Votre réponse est correcte : 6.
44

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

Votre réponse est correcte : Wait three minutes and if no acknowledgement is heard from a coast station you should relay the alert.
45

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?:

Bonne réponse: Public Correspondence Station.
Votre Réponse: Network Coordination Station.
46

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

Votre réponse est correcte : The Sun.
47

You have an important navigational or meteorological warning to transmit. What call should proceed this message when made on the radio telephone?:

Votre réponse est correcte : SECURITE SECURITE (3 times).
48

The word NAVTEX is spelled conform the international phonetic alphabet:

Votre réponse est correcte : November, Alfa, Victor, Tango, Echo, X-ray.
49

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

Votre réponse est correcte : A possibility to receive MSI.
50

What is the purpose of the radiotelephony two tone alarm?:

Votre réponse est correcte : Activate bridge watchkeeping receivers and attract the attention of the person on watch.
51

Dish aerials are used with:

Votre réponse est correcte : Inmarsat-B and -M.
52

Which of the following is a Accounting Authority Identification Code?:

Votre réponse est correcte : FR01.
53

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:

Votre réponse est correcte : Semi-duplex.
54

The following information must be given on the SART:

Votre réponse est correcte : Date of replacement of the batteries.
55

How will you start a cancelling message after you send by mistake a distress call on your VHF DSC equipment?:

Votre réponse est correcte : All Stations – This is “SAINT-ROMAIN”.
56

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.:

Votre réponse est correcte : Urgent call.
57

Automatic amplifier regulation is used for the following reasons:

Votre réponse est correcte : With weak incoming signals distortion is reduced.
58

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

Bonne réponse: ARQ followed by the coast-station’s ID-number.
Votre Réponse: FEC followed by the telex country-code of the coast-station.
59

The Satellite orbit in the Cospas-Sarsat system is:

Bonne réponse: Polar.
Votre Réponse: Geostationary.
60

The identification of a coast station is composed as follows:

Votre réponse est correcte : 00 followed by an MID-number and station number.
61

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

Votre réponse est correcte : The detonating gas can be discharged.
62

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

Votre réponse est correcte : The use of MF DSC.
63

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

Votre réponse est correcte : Frequency.
64

With maintenance of batteries it is of primary importance that:

Votre réponse est correcte : The space where the batteries are stored is properly ventilated.
65

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

Bonne réponse: You must call on another working channel.
Votre Réponse: You must call on distress channel.
66

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

Votre réponse est correcte : 1 metre.
67

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

Votre réponse est correcte : A coast-station or coast guard-station.
68

The sensitivity of a communication receiver can be adjusted with:

Votre réponse est correcte : RF-gain.
69

VHF channel 6 is:

Bonne réponse: Inter-ship channel.
Votre Réponse: Intra-ship channel.
70

By the degree of selectivity of a receiver is meant:

Votre réponse est correcte : Ability to make weak stations audible.
71

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

Votre réponse est correcte : A possibility to receive MSI.
72

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

Votre réponse est correcte : You set watch on VHF channel 16.
73

What is the acronym FR 01?:

Votre réponse est correcte : AAIC.
74

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

Votre réponse est correcte : The safety certificate.
75

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:

Votre réponse est correcte : The meteorological station connected with the CES used.
76

Distress MF communications should normally be operated:

Votre réponse est correcte : In J3E mode – on simplex basis.
77

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

Votre réponse est correcte : Telephone.
78

One can check the functioning of the SART by:

Votre réponse est correcte : Activating the SART and checking the effect on the radar screen.
79

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

Votre réponse est correcte : The amount of ionisation.
80

Dish aerials are used with:

Votre réponse est correcte : Inmarsat-B and -M.