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: 88%

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Right answers:

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

Your answer is correct: Always with the coast station.

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

Your answer is correct: Yes.

According to the rule of GMDSS, channel 70 is used for:

Your answer is correct: Alerting.

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

Your answer is correct: A, B, D.

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.

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

Your answer is correct: Frequency.

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.

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

Your answer is correct: Your position, name, call sign and speed.

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?:

Correct answer: 1300210.

Your Answer: 424432020.

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

Your answer is correct: 2 digit code telex services.

MF communication is usually provided by:

Your answer is correct: Ground wave.

Via a coast-station radio medical advice is asked using NBDP. What command has to be given after ga +?:

Your answer is correct: med +.

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

Your answer is correct: ASCII.

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

Your answer is correct: A possibility to receive MSI.

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

Your answer is correct: Yes.

The battery of an EPIRB should be changed:

Your answer is correct: Every 4 years.

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

Your answer is correct: Telephone.

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

Your answer is correct: The Sun.

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.

Automatic amplifier regulation is used for the following reasons:

Your answer is correct: With weak incoming signals distortion is reduced.

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.

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

Your answer is correct: Almost rectilinear.

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

Your answer is correct: All Stations – This is “SAINT-ROMAIN”.

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

Your answer is correct: 2 182 Hz.

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.

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 Answer: FEC followed by the telex country-code of the coast-station.

Which word will precede a routine message?:

Your answer is correct: No specific word will precede a routine message.

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

Your answer is correct: LES.

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.

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

Your answer is correct: Month.

The “clarifier” has only effect during:

Correct answer: Receiving in mode J3E.

Your Answer: Transmitting in mode J3E.

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

Your answer is correct: A, B, D.

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:

Your answer is correct: TX: 2 189,5 kHz RX: 2 177,0 kHz.

Inmarsat is short for:

Your answer is correct: International Maritime Satellite Organisation.

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

Your answer is correct: SES or an EGC receiver.

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

Your answer is correct: The satellite.

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

Your answer is correct: Everybody can read along.

One can check the functioning of the SART by:

Your answer is correct: Activating the SART and checking the effect on the radar screen.

The identification of a coast station is composed as follows:

Your answer is correct: 00 followed by an MID-number and station number.

A DSC-notice should be sent on VHF-channel:

Your answer is correct: 70.

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

Your answer is correct: The Very High Frequency (VHF) band.

By reduced transmitting power is meant in VHF a power between:

Your answer is correct: 0,5-1 watt.

Distress MF communications should normally be operated:

Correct answer: In J3E mode – on simplex basis.

Your Answer: In J3E mode – on duplex basis.

With what system is a NAVTEX-message transmitted?:

Your answer is correct: FEC.

The ideal aerial length depends on:

Your answer is correct: The frequency chosen.

The word SHIP is spelled conform the international phonetic alphabet:

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

Which of the following is a coast station MMSI?:

Correct answer: 2275300.

Your Answer: 227005300.

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:

Correct answer: After ga + the radio telex-command msg + ?

Your Answer: After ga + ? the radio telex-command msg +.

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

Your answer is correct: The amount of ionisation.

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

Correct answer: The first digit of the identification.

Your Answer: The first two digits of the identification.

In radio telephony what is the “URGENCY CALL” which should be used to indicate that you have a very urgent message to transmit concerning the safety of another vessel or person?:

Your answer is correct: PAN-PAN (3 times).

Which International Convention introduced the GMDSS?:

Your answer is correct: SOLAS.

The Inmarsat-satellites are located:

Your answer is correct: Above the equator.

Which word will precede an urgency message?:

Your answer is correct: PAN-PAN.

Which word will precede a safety message?:

Your answer is correct: SECURITY.

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

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

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.

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

Your answer is correct: 15 m.

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.

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

Your answer is correct: A1.

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.

With maintenance of batteries it is of primary importance that:

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

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

Your answer is correct: Routine.

Moored in a harbour, transmitting with a mariphone is:

Your answer is correct: Always allowed.

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

Your answer is correct: 48 hours.

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

Correct answer: The detonating gas can be discharged.

Your Answer: The production of detonating gas can be prevented.

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

Correct answer: The structure dimensions and the material of the coax cable.

Your Answer: The length of the coax cable.

To get proper conversation discipline in maritime radio traffic:

Your answer is correct: Only necessary radio conversations are made in a concise and businesslike way.

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.

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

Your answer is correct: The amount of ionisation.

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.

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

Your answer is correct: 12 MHz.

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

Your answer is correct: RF-gain.

What is understood by carrier frequency?:

Your answer is correct: The frequency actually used by transmitter and receiver.

The MERSAR is:

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

What does the abbreviation VHF means?:

Your answer is correct: Very High Frequency.

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.

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

Your answer is correct: Frequency.

The safety message announces that a station:

Your answer is correct: Will relay a message concerning an important navigational or meteorological warning.

By frequency is meant:

Your answer is correct: Number of vibrations per unit of time.

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