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By the term “Stand by” the operator of a coast-station means that one should:
Give the position of the ship.
Wait on this channel for one hour.
Switch back to the calling channel.
Wait until the coast-station calls again.
How will you start a cancelling message after you send by mistake a distress call on your VHF DSC equipment?
PAN-PAN – All Stations – This is “SAINT-ROMAIN”.
SECURITE – All Stations – This is “SAINT-ROMAIN”.
All Stations – This is “SAINT-ROMAIN”.
MAYDAY – All Stations – This is “SAINT-ROMAIN”.
What is the acronym FR 01?
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?
SECURITE-SECURITE (3 times).
A satellite receives the transmissions of the 406 MHz Cospas-Sarsat EPIRB. The transmissions of the EPIRB will be:
Always passed on to a LUT.
Exclusively passed on to a LUT only between 70° N and 70° S.
Exclusively passed on to a LUT if the satellite sees both the EPIRB and the LUT.
Passed when the satellite in passing the equator.
What is SITREP an abbreviation for:
Ship Transmit Emergency Radio.
Survivor Indication Transponder Equipment.
Ship Indication Transmission Equipment.
Sea area A4 is in maritime radio traffic sea area:
Outside the sea areas A1, A2 and A3.
With the exception of sea areas A1, A2 and A3, within the range of Inmarsat-satellites, where continuous alarm is available.
Within VHF-radiotelephony-range of coast station, where continuous DSC-alarm is available.
What is the emergency frequency on MF (Medium Frequency) radio?
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:
The meteorological office of the ship’s flag state.
MET office Washington, this office will take care of further dispatch of the weather reports.
The meteorological station connected with the CES used.
According to the rules of GMDSS all vessels have to be equipped with:
At least three mariphones.
A possibility to receive MSI.
A distress alert on board may only be transmitted on explicit order of:
The navigating officer on duty.
At what minimum height above sea level a SART transponder must be mounted?
The good working of a SART transponder doesn’t depend on the height above sea level.
The frequency 121,5 MHz is used for:
The propagation of radio-signals in the VHF-band is:
Dependent on the hour of transmission (day or night).
Dependent on the power emmited and the temperature of the atmosphere.
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?
Network Coordination Station.
Public Correspondence Station.
The safety message announces that a station:
Is going to be under repairs.
Is in serious and imminent danger and needs immediate assistance.
Will relay a message concerning an important navigational or meteorological warning.
Has an very urgent message concerning the safety of a vessel, a plane or another means of conveyance.
To receive distress alerting and MSI via an Inmarsat-C set vessels must have:
A radio officer on board.
MF/HF radio telex scanner with printer.
Suitable for 518 kHz NAVTEX receiver.
The traffic list of a coast-station is a list of:
Call-signs of ships for which a radio-telephone call, a telegram or another call is intended.
Name of ship’s scheduled for berthing.
Pertinent navigational and weather information.
Names of ships which, on behalf of safety at sea, are being routed by a traffic control system.
Which of the following frequencies is used by the NAVTEX system?
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:
2 187,5 kHz, 8 414,5 kHz and for instance 12 577,0 kHz.
All DSC distress frequencies.
2 182 kHz and channel 70.
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.
If a coast-station doesn’t answer a call on VHF working channel or doesn’t send a reply signal:
You can repeat your call after 2 minutes.
You must call on distress channel.
You must call on another working channel.
You can repeat your call immediately when convinced that no other radio traffic is interfered with.
A DSC-notice should be sent on VHF-channel:
The ID of an Inmarsat-M station on board starts with:
The position of a 406 MHz Cospas-Sarsat EPIRB is:
Passed on by the EPIRB to the satellite.
Measured by the “dopler” shift in the signals.
Determined by satellites by means of directional aerials.
What does the abbreviation DSC means?
Distress and safety call.
What is the most important factor influencing the HF range?
The power of the transmitter.
The exact position of a 406 MHz COSPAS SARSAT EPIRB is eventually calculated by:
Which wave length applies to a frequency of 2 000 kHz?
What does the abbreviation VHF means?
Variable Hertz Frequency.
What statement is correct with frequency modulation?
The amplitude fluctuating an LF-rhythm.
Frequency modulation is often applied in the maritime VHF-range (band).
The amplitude remain constant.
The frequency is constant.
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:
The meteorological office of the ship’s flag state.
The meteorological station connected with the CES used.
MET office Washington, this office will take care of further dispatch of the weather reports.
The typical “daylight-frequencies” for long distance transmission are located in the:
Is it necessary to state the accounting code of the vessel in fully automated radio telex-traffic with a coast-station?
No, because the AAIC is included in the radio telex-identification.
No, when AAIC is unknown, it will be asked for.
It depend upon your location.
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:
TX: 8 415,5 kHz RX:8 415,5 kHz.
TX: 8 415,0 kHz RX:8 436,5 kHz.
TX: 8 415,0 kHz RX:8 415,0 kHz.
TX: 8 436,5 kHz RX:8 436,5 kHz.
What are the NAVTEX messages categories which cannot be suppressed?
The compulsory testing of a prescribed EPIRB is to be done:
The batteries must be placed in a well ventilated place, so that:
The person can work in the compartment.
The detonating gas can be discharged.
The production of detonating gas can be prevented.
There is sufficient oxygen available for optimum working of the batteries.
The “clarifier” has only effect during:
Transmitting in mode J3E.
Transmitting in mode H3E.
At the end of a radio telex-connection, when a “store and forward” message has been transmitted, the coast-station at least gives a:
Time (in UTC) whereupon the telex for the subscriber is delivered.
Approximate time when telex will be delivered.
Code in letters which will be repeated when the telex has been delivered to the subscriber.
Of the AM-signal:
Amplitude is variable and frequency of the carrier wave is constant.
Both amplitude and frequency of the carrier wave are variable.
Is not dependant on the frequency and amplitude.
Amplitude and frequency of the carrier wave are constant.
The type of Inmarsat station A, B, C, M is recognized by:
The first four digits of the identification.
Last digit of the identification.
The first two digits of the identification.
The first digit of the identification.
The MERSAR is:
A fully automated system for mutual assistance and rescue of persons at sea.
A book for communication regulations at sea.
A book of directions for search and rescue at sea.
A survey of vessels favourably located for possible rescue during SAR operations.
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?
You receive a distress alert on HF Radio. What should you do?
Wait three minutes and if no acknowledgement is heard from a coast station you should relay the alert.
No response is necessary providing the vessel is more than 24 hours away.
Relay the message immediately on 2 182 kHz.
By reduced transmitting power is meant in VHF a power between:
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:
You can repeat your call immediately.
You must wait 3 minute minimum before repeating your call.
You must wait 5 minutes before repeating the call.
You must wait 1 minute minimum before repeating your call.
For a DSC-connection (no “distress alert”) with another vessel the following frequencies are used:
TX: 2 187,5 kHz RX: 2 187,5 kHz.
TX: 2 177,0 kHz RX: 2 177,0 kHz.
TX: 2 189,5 kHz RX: 2 189,5 kHz.
TX: 2 187,5 kHz RX: 2 182,0 kHz.
The ideal aerial length depends on:
The modulation form chosen.
The class of transmission.
MUF stands for:
Highest possible frequency that will be reflected by the ionosphere.
Most effective frequency, to make a connection with an HF-transmitter.
Highest possible frequency that can be made with an HF-transmitter on board.
Long distance communication in the HF-bands depends on:
The following information must be given on the SART:
The name of the operator.
Date of replacement of the batteries.
The date of replacement of the hydrostatic release unit.
Of the AM-signal:
Amplitude and frequency of the carrier wave are constant.
Both amplitude and frequency of the carrier wave are variable.
Is not dependent on the frequency and amplitude.
Amplitude is variable and frequency of the carrier wave is constant.
With an Inmarsat-C installation there is the addressing-option “special”. Via this option:
You can send a message by express delivery.
You can deliver a message via a special telegram.
Give one of Inmarsat’s “special access codes”.
You can plan a message to be delivered at a special time.
The prescribed test of an approved portable VHF radio set (portophone) must be done once a:
A distress-call, onboard via RCC, may only be given Receipt if:
OSC from the RCC concerned invites the vessels.
The OOW deems it necessary.
The prescribed test of EPIRB, SART and portable VHF radio set must be entered in:
Is it necessary to state the accounting code of the vessel in fully automated radio telex-traffic with a coast-station?
No, when AAIC is unknown, it will be asked for.
No, because the AAIC is included in the radio telex-identification.
It depend upon your location.
According to the rules of GMDSS vessels one must be able to receive MSI with the aid of:
Emergency portable radio.
According to the rules of GMDSS all vessels have to be equipped with:
A possibility to receive MSI.
At least three mariphones.
In what HF-band is long distance transmission possible when both stations are located in Darkness?
In the Inmarsat Maritime Communications Handbook one can find information about:
2 digit code telex services.
Numbers of fax subscribers.
What HF-band is generally suitable for long distance transmission if one of two stations is Located in twilight?
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:
After ga + the radio telex-command msg + ?
After ga + ? the radio telex-command msg +.
After ga + the radio telex-command msg +.
After ga + the telex number of the ship.
The effect of reflection of the radio waves in the ionosphere on the range depends on:
The correct adjustment of the button band width.
The amount of ionisation.
The correct adjustment of the clarifier.
The correct adjustment of the dimmer.
How often must inspection of proper working of the EPIRB’s and SART’s take place on board? Once per:
Which of the following is a ship MMSI?
The wavelength of a radio-signal reflected against the F-layer may be:
The impedance of a coax cable for the VHF-set depends on:
The structure dimensions and the material of the coax cable.
The length of the coax cable.
The temperature of the cable.
The way in which the feed line is controlled.
The Satellite orbit in the Cospas-Sarsat system is:
Which of the following frequency bands would most likely provide reliable communication between two stations that are 15 miles apart?
The Very High Frequency (VHF) band.
The Medium Frequency (MF) band.
The High Frequency (HF) band.
The Low Frequency (LF) band.
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?
If a coast-station doesn’t answer a call on VHF working channel or doesn’t send a reply signal:
You can repeat your call immediately when convinced that no other radio traffic is interfered with.
You can repeat your call after 2 minutes.
You must call on another working channel.
You must call on distress channel.
A SART must be visible on the ship’s radar from a distance of at least:
The MF/HF-transceiver on board is tuned to the assigned frequency of a station. To make this connection the following mode is used:
Via Inmarsat-C a message is sent to an Inmarsat-C mailbox with a positive delivery notification (PDN). The ground station will:
Send a PDN, if the message has arrived in the mailbox.
Not send any PDN for this message.
send no PDN’s with messages intended for the mailbox.
Send a PDN, as soon as the message is collected from the mailbox.
The word SHIP is spelled conform the international phonetic alphabet:
Singapore, Hotel, India, Paris.
Sugar, Hotel, Italia, Peter.
Sierra, Hotel, India, Papa.
Sierra, Hotel, Item, Papa.
In radio-telex distress traffic preference is given to FEC because:
The system automatically requests repetition when reception garbled.
Everybody can read along.
A VHF transmission range is mainly determined by:
Whether it is radio-telephony, radio-telex or DSC.
The height of the aerial.
The transmission power, propagation and the quality of the receiver.
A wire aerial for an MF/HF-transmitter must be suspended between isolators:
To prevent contact with earth.
To prevent burns when touching the aerial.
To make the way for aerial currents as long as possible.