Moored in a harbour, transmitting with a mariphone is:
Allowed in emergency only.
Allowed in consultation with harbour master.
All designated SAR aircraft and civil aircraft carry equipment operating on the international aeronautical distress frequencies (amplitude modulation). The aeronautical distress frequencies are:
123,8 MHz and/or 247,6 MHz.
243,1 MHz and/or 486,2 MHz.
127,8 MHz and/or 71,6 MHz.
121,5 MHz and/or 243,0 MHz.
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.
What is the first function of GMDSS?
Transmission and reception of on scene communication.
Transmission of ship to shore alerts.
Reception of shore to ship distress alerts.
Transmission and reception of signals for locating.
To choose the HF-band, the time difference between 2 stations:
Is multiplied by the hour at the transmitting station.
On area A1 the function “Reception of shore to ship distress alerts” is mainly based on:
The use of SART transponders.
The use of SARSAT COSPAS Epirbs.
Command of radio-traffic between vessels and coast stations lies:
Always with the coast station.
With the station that calls.
DSC uses for automatic identification the MMSI. The identification 002442000 is assigned to:
A coast-station or coast guard-station.
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:
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.
The number of oscillations of a wave per seconds is called:
According to the rules of GMDSS all vessels have to be equipped with:
A possibility to receive MSI.
At least three mariphones.
What is SITREP an abbreviation for:
Ship Transmit Emergency Radio.
Survivor Indication Transponder Equipment.
Ship Indication Transmission Equipment.
You have an important navigational or meteorological warning to transmit. What call should proceed this message when made on the radio telephone?
SECURITE SECURITE (3 times).
Which International Convention introduced the GMDSS?
To get proper conversation discipline in maritime radio traffic:
Every available VHF-channel should always be used.
Only after permission by captain, to send and/or receive on a VHF-channel pointed out the master.
Communication should be done only as per company’s prescribed schedule.
Only necessary radio conversations are made in a concise and businesslike way.
What are the NAVTEX messages categories which cannot be suppressed?
The identification of a coast station is composed as follows:
33 followed by the MID number.
00 followed by an MID-number and station number.
00 followed by an MID-number.
00 followed by an MMSI-number.
On which frequency a ship must maintain a continuous watch when sailing in area A2?
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.
The ideal aerial length depends on:
The modulation form chosen.
The class of transmission.
Give the command after ga + for the transmission of a “store and forward”-message with radio-telex:
Dish aerials are used with:
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.
The type-indication of the radio set is mentioned in:
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.
Which equipment will detect a signal from a SART transponder?
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.
Which of the following is a Accounting Authority Identification Code?
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.
In what HF-band is long distance transmission possible when both stations are located in Darkness?
Distress MF communications should normally be operated:
In G3E mode – on simplex basis.
In J3E mode – on simplex basis.
In J3E mode – on duplex basis.
In G3E mode – on duplex basis.
When a character in the NAVTEX message sent is not received in the proper way:
A closely resembling character will be printed.
The message will not be printed at all until, with repeated transmission, it can be automatically compared and corrected.
Nothing or a special character will be printed.
Any other character will be printed.
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.
Via a coast-station radio medical advice is asked using NBDP. What command has to be given after ga +?
The wavelength of a radio-signal reflected against the F-layer may be:
You wish to send an e-mail using the Inmarsat-C installation. The message has to be composed in:
National language of the LES.
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.
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:
Channel Delta of the coast station.
Radio telephony-channel 7 in the 8 MHz band.
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.
The prescribed periodic tests of the radio set must be entered in:
Manual maritime radio communication.
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.
The compulsory testing of a prescribed EPIRB is to be done:
On area A4 the function “Transmission of ship to shore distress alerts” is mainly based on:
The use of VHF DSC and VHF Epirbs.
The use of HF DSC and COSPAS SARSAT Epirbs.
The use of HF DSC and Inmarsat Epirbs.
The use of MF DSC and Inmarsat Epirbs.
Which word will precede a safety message?
According to the rules of GMDSS vessels are equipped with certain radio-communication devices depending on:
What is the two letter signal, to be used by flags, radiotelephony or radiotelegraphy, meaning “Calling All Ships”?
Long distance communication in the HF-bands depends on:
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.
At the entrance to the space where batteries are stored on board the following notice must be fitted:
No entry with naked light and/or flame.
The Inmarsat-satellites are located:
In a geostationary orbit at approximally 1 000 km Altitude.
Between Lat 70° N and 70° S.
Alternatively above the poles and the equator.
The correct functioning of a DSC-modem can be checked by means of:
The built-in test facility in the modem.
Tester provided with the equipment.
The obligatory monthly transmission from the RCC’s.
The testing-mode of the ever present VHF-DSC-EPIRB.
The exact position of a 406 MHz COSPAS SARSAT EPIRB is eventually calculated by:
The whip-antenna of the MF transceiver was lost in bad weather. The MF transceiver can be used again:
If the whip-antenna is replaced by an antenna of about the same length as the original one.
If instead of the whip-antenna, another whip-antenna such as the spare VHF antenna is connected.
Only if the whip-antenna is replaced by another whip-antenna of the same length.
If the whip-antenna is replaced by a Sat-C antenna.
The effect of reflection of the radio waves in the ionosphere on the range depends on:
The correct adjustment of the dimmer.
The amount of ionisation.
The correct adjustment of the button band width.
The correct adjustment of the clarifier.
Under GMDSS rules the trading area A1 can be considered to be:
Within range of VHF coast radio stations.
Within the coverage of Inmarsat.
Within range of MF coast radio stations.
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.
The prescribed test of an approved portable VHF radio set (portophone) must be done once a:
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:
LES before the satellite is actually seen by this ground station.
LUT before the satellite is actually seen by this ground station.
NCS before the satellite is actually seen by this ground station.
Which word will precede a routine message?
No specific word will precede a routine message.
Which class of emission is used for VHF radio telephony transmissions?
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 hydrostatic release of an EPIRB should be changed:
Modulation is:
To enhance the side bands in relation to the carrier wave.
Blending LF & HF signals.
How often must inspection of proper working of the EPIRB’s and SART’s take place on board? Once per:
What HF-band is generally suitable for long distance transmission if one of two stations is Located in twilight?
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?
F F F (Telegraphy) / RESCUE-RESCUE (Telephony).
X X X (Telegraphy) / PAN-PAN (Telephony).
T T T (Telegraphy) / SECURITE (Telephony).
S O S (Telegraphy) / MAYDAY (Telephony).
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.
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 ID of an Inmarsat-M station on board starts with:
A VHF transmission range is mainly determined by:
The height of the aerial.
The transmission power, propagation and the quality of the receiver.
Whether it is radio-telephony, radio-telex or DSC.
The prescribed test of EPIRB, SART and portable VHF radio set must be entered in:
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.
On area A1 the function “Transmission of ship to shore distress alerts” is mainly based on:
The use of SART transponders.
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.
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.
By reduced transmitting power is meant in VHF a power between:
On area A2 the function “Transmission of ship to shore distress alerts” is mainly based on:
The use of INMARSAT Epirbs.
The use of SARSAT COSPAS Epirbs.
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?