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Crew Evaluation System test online for seamans, Radio Communication, GMDSS

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Welcome to the website where you can pass online the CES test on the subject «Radio Communication GMDSS». Practice like this will help you as a marine specialist improve your knowledge with the help of online studying and appraisal practice. CES based on practical information and marine specialists experience.

CES tests developed for evaluating seaman basic knowledge by Seagull Company (rebranded as «OTG»), is an evaluating online-tool, used for revealing any professional preparation needed in specific fields of knowledge, defined by STCW.

  • Version: 4.1, 5.0, 5.1, 6.0.0.
  • Test type: STCW.
  • Duty: Officer.
  • Level: Radio communication.
  • Area: GMDSS.

CES tests have proven themselves as good tools for the selection and recruitment process, as well as advancing the level of knowledge of the current officers and crew. Ocean Technologies Group use various subjects for question creation, which includes:

  • Crowd and Crisis Management;
  • Integrated Navigation System (INS);
  • Ballast water management;
  • Handling and Stowage;
  • Vessel operation management and safety;
  • Marine engineering;
  • Maintenance and repair, etc.

Current test contains Seagull CES questions on the subject «Radio Communication GMDSS». Those questions can be used for competence verification specialist capable of preventing accidental situations related with transporting safety, or also for self-examination.

«Radio Communication GMDSS» subject includes theoretical and practical information about advanced training for work on all types of the vessels. Knowledge of this information directly shows employee’s competence who holds a relevant post on a vessel. Officer radio communication duties under the Global Maritime Distress and Safety System (GMDSS) involve ensuring that all communications equipment on board the vessel is functioning properly and that the crew is trained to operate it in case of an emergency. Some specific duties include monitoring distress frequencies, responding to distress calls, maintaining logs and etc.

On this site Crew Evaluation System Test on the subject «Radio Communication GMDSS» contains 198 questions you need to answer with no possibility to go back to previous question. Therefore, we recommend carefully reading each question and making decision with no hurry. In case you have some difficulty answering, you have also possibility to request a hint.

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Start test
Code: KRVT Which of the following is a Accounting Authority Identification Code?
FR01.
227990850.
2 187,5.
F1B.
Next question

Code: FDJI What is the two letter signal, to be used by flags, radiotelephony or radiotelegraphy, meaning “Calling All Ships”?
CQ.
AS.
TT.
CA.
Show result

Code: IUTX An EPIRB has been activated accidentally. Which of the following is correct for cancelling the false distress alert?
Call the nearest coast station and inform it that a false distress alert has been transmitted.
Send a distress priority VHF DSC call and make broadcast to all stations.
Call a LUT and inform it.
Make broadcast to all stations on VHF 16.
Next question

Code: FEWC The effect of reflection of the radio waves in the ionosphere on the range depends on:
The amount of ionisation.
The correct adjustment of the dimmer.
The correct adjustment of the button band width.
The correct adjustment of the clarifier.
Next question

Code: EGSU On area A1 the function “Reception of shore to ship distress alerts” is mainly based on:
The use of VHF DSC.
The use of SARSAT COSPAS Epirbs.
The use of SART transponders.
The use of MF DSC.
Next question

Code: IYRC The safety message announces that a station:
Will relay a message concerning an important navigational or meteorological warning.
Is in serious and imminent danger and needs immediate assistance.
Is going to be under repairs.
Has an very urgent message concerning the safety of a vessel, a plane or another means of conveyance.
Next question

Code: PSIB What is understood by carrier frequency?
The frequency actually used by transmitter and receiver.
Frequency of the carrier wave.
The frequency of upper side band (UBS).
Frequency of single side band.
Next question

Code: BKNU Onboard the following message is received on the DSC controller: DOO: 245329000 CH16; S distress ack 244123000. What station sent the distress acknowledgement?
245329000.
002453290.
244123000.
None of the given.
Next question

Code: JRHG Which wave length applies to a frequency of 2 000 kHz?
150 mtr.
1 500 mtr.
15 mtr.
15 000 mtr.
Next question

Code: OROR For a DSC-connection (no “distress alert”) with another vessel the following frequencies are used:
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: 2 187,5 kHz.
TX: 2 187,5 kHz RX: 2 182,0 kHz.
Next question

Code: YJCM Of the AM-signal:
Amplitude is variable and frequency of the carrier wave is constant.
Amplitude and frequency of the carrier wave are constant.
Is not dependant on the frequency and amplitude.
Both amplitude and frequency of the carrier wave are variable.
Next question

Code: SLGM 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?
1300210.
424432010.
424432020.
344320000.
Next question

Code: OUOJ Dish aerials are used with:
Inmarsat-B and -M.
Inmarsat-C and -M.
Inmarsat-A and -C.
None of the mentioned.
Next question

Code: RHCF 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 High Frequency (HF) band.
The Low Frequency (LF) band.
The Medium Frequency (MF) band.
Next question

Code: KIOJ The Inmarsat-satellites are located:
Above the equator.
Alternatively above the poles and the equator.
In a geostationary orbit at approximally 1 000 km Altitude.
Between Lat 70° N and 70° S.
Next question

Code: RUQY VHF channel 6 is:
Inter-ship channel.
Intra-ship channel.
Safety channel.
Public traffic channel.
Next question

Code: BFCW 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 the whip-antenna is replaced by a Sat-C antenna.
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.
Next question

Code: JRHI A VHF transmission range is mainly determined by:
The height of the aerial.
The ocean region.
Whether it is radio-telephony, radio-telex or DSC.
The transmission power, propagation and the quality of the receiver.
Next question

Code: ARGA By FleetNET communication is understood:
An EGC-message destined for ships with the same group call number.
A MSI-message destined for ships in specific geographical area.
An urgent message for all ships in a particular area.
A HF-NBDP-message destined for ships in a certain geographical area.
Next question

Code: EYJG The authority to order the use of distress signal or distress alerts is:
Only with the master.
Company safety officer.
The person designated to maintain communication during distress situations.
The first person to discover the distress situation.
Next question

Code: GBOK What are the NAVTEX messages categories which cannot be suppressed?
A, B, D.
Weather forecasts.
Satnav messages.
A, B, C.
Next question

Code: MGVT The hydrostatic release of an EPIRB should be changed:
Every 2 years.
Every 4 years.
Every 3 years.
Yearly.
Next question

Code: ESOV The MERSAR is:
A book of directions for search and rescue at sea.
A survey of vessels favourably located for possible rescue during SAR operations.
A fully automated system for mutual assistance and rescue of persons at sea.
A book for communication regulations at sea.
Next question

Code: ECSD 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 station connected with the CES used.
The meteorological office of the ship’s flag state.
KNMI in Holland.
MET office Washington, this office will take care of further dispatch of the weather reports.
Next question

Code: KCCQ The impedance of a coax cable for the VHF-set depends on:
The structure dimensions and the material of the coax cable.
The temperature of the cable.
The way in which the feed line is controlled.
The length of the coax cable.
Next question

Code: JHHH 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:
LUT before the satellite is actually seen by this ground station.
NCS before the satellite is actually seen by this ground station.
LES before the satellite is actually seen by this ground station.
Coast station.
Next question

Code: KQDQ The prescribed periodic tests of the radio set must be entered in:
Radio Log.
Ship’s deck log.
Equipment manual.
Manual maritime radio communication.
Next question

Code: GLRY Which word will precede an urgency message?
PAN-PAN.
PAN.
URGENCE.
MAYDAY.
Next question

Code: WHNY One can check the functioning of the SART by:
Activating the SART and checking the effect on the radar screen.
Removing it from the holder and turning the SART upside down.
Activating it by extracting the antenna.
Lowering SART in to the sea.
Next question

Code: YNBN What do you do after receiving a VHF DSC DISTRESS call?
You set watch on VHF channel 16.
You send immediately a DSC DISTRESS ACKNOWLEDGEMENT call.
You set watch on channel 13.
You send immediately a DSC DISTRESS RELAY call.
Next question

Code: DPEX Moored in a harbour, transmitting with a mariphone is:
Always allowed.
Not allowed.
Allowed in emergency only.
Allowed in consultation with harbour master.
Next question

Code: AYOU What is the emergency frequency on MF (Medium Frequency) radio?
2 182 Hz.
1 616 Hz.
2 617 Hz.
1 718 Hz.
Next question

Code: RGYC Which of the following services is not provided by Inmarsat-C?
Telephone.
Safetynet.
Fleetnet.
Telex.
Next question

Code: JGYG Reflection of radio waves in the ionosphere depends on:
Sunspots.
The speed of the waves.
The chosen mode of transmission.
The propagation speed of propagation.
Next question

Code: UPGP 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:
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.
2 187,5 kHz, 8 414,5 kHz and for instance 12 577,0 kHz.
2 182 kHz and channel 70.
All DSC distress frequencies.
Next question

Code: WEGK The transmitting receiving method, when both stations can transmit and receive at the same time is called:
Duplex.
Simplex.
Semi-duplex.
None of the mentioned.
Next question

Code: ARAF How are the NAVTEX areas identified?
By two letters.
By one letter and one digit.
By one digit.
By one letter.
Next question

Code: GPRM In what HF-band is long distance transmission possible when both stations are located in Darkness?
8 MHz.
16 MHz.
22 MHz.
4 MHz.
Next question

Code: TCYE According to the rules of GMDSS vessels equipped for all sea areas have to be provided with:
406,0 MHz Cospas-Sarsat EPIRB.
156,3 kHz EPIRB.
1,6 GHz Inmarsat/DSC EPIRB.
121,5/243,0 MHz VHF EPIRB.
Next question

Code: MXSP On the MF/HF transmitter-receiver there is a sensitivity control. Another name for this is:
RF-gain.
AGC-gain.
AF-gain.
LF-gain.
Next question

Code: IFFT Which class of emission is used for VHF radio telephony transmissions?
G3E.
H3E.
G2B.
J2B.
Next question

Code: PJEU 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: 8 415,0 kHz RX:8 436,5 kHz.
TX: 8 436,5 kHz RX:8 436,5 kHz.
TX: 8 415,0 kHz RX:8 415,0 kHz.
TX: 8 415,5 kHz RX:8 415,5 kHz.
Next question

Code: FQVB By the term “Stand by” the operator of a coast-station means that one should:
Wait until the coast-station calls again.
Give the position of the ship.
Switch back to the calling channel.
Wait on this channel for one hour.
Next question

Code: RKOI The identification of a coast station is composed as follows:
00 followed by an MID-number and station number.
00 followed by an MMSI-number.
33 followed by the MID number.
00 followed by an MID-number.
Next question

Code: FNIY 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?
Yes, with the MF/HF-radio telex.
Yes, with VHF DSC.
Yes, with the MF/HF-DSC.
No.
Next question

Code: MKCF On area A3 the function “Transmission and reception of signals for locating” is mainly based on:
The use of SART transponders.
The use of MF DSC.
The use of HF DSC.
The use of SARSAT COSPAS Epirbs.
Next question

Code: SXTH On area A4 the function “Transmission of ship to shore distress alerts” is mainly based on:
The use of HF DSC and COSPAS SARSAT Epirbs.
The use of VHF DSC and VHF Epirbs.
The use of MF DSC and Inmarsat Epirbs.
The use of HF DSC and Inmarsat Epirbs.
Next question

Code: MEJJ On area A2 the function “Transmission of ship to shore distress alerts” is mainly based on:
The use of MF DSC.
The use of VHF DSC.
The use of SARSAT COSPAS Epirbs.
The use of INMARSAT Epirbs.
Next question

Code: XFOI 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.
Crew only.
Keep access free.
Electrician only.
Next question

Code: OFQT 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?
Seelonce Distress.
Seelonce Securite.
Seelonce Mayday.
Seelonce Pan.
Next question

Code: KTIH What is SITREP an abbreviation for:
Situation Report.
Ship Indication Transmission Equipment.
Survivor Indication Transponder Equipment.
Ship Transmit Emergency Radio.
Next question

Code: UUHU The word NAVTEX is spelled conform the international phonetic alphabet:
November, Alfa, Victor, Tango, Echo, X-ray.
November, Apple, Victoria, Tango, Echo, X-mas.
November, Anna, Victor, Tango, Eduard, X-ray.
November, Able, Valencia, Tripoli, Echo, Xantippe.
Next question

Code: KSXF The word CHANNEL is spelled conform the international phonetic alphabet:
Charlie, Hotel, Alfa, November, November, Echo, Lima.
Cornelies, Hotel, Apple, November, November, Echo, Land.
Charlie, Hotel, Able, November, November, Echo, Liverpool.
Cornelies, Hotel, Alfa, November, November, Echo, Lima.
Next question

Code: RPSC The word SHIP is spelled conform the international phonetic alphabet:
Sierra, Hotel, India, Papa.
Singapore, Hotel, India, Paris.
Sierra, Hotel, Item, Papa.
Sugar, Hotel, Italia, Peter.
Next question

Code: XHGT What is the acronym FR 01?
AAIC.
MMSI.
MSI.
Call sign.
Next question

Code: VJLS Is it necessary to state the accounting code of the vessel in fully automated radio telex-traffic with a coast-station?
Yes.
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.
Next question

Code: NTJX You want to send a DSC-call in connection with a shore telephone-call. You must choose:
Routine.
Distress.
Safety.
Urgency.
Next question

Code: UIOY What is the most important factor influencing the HF range?
The frequency used.
The channel used.
The size of the antenna.
The power of the transmitter.
Next question

Code: IJNO What mode must be used on the MF/HF transmission when making a radiotelephone call?
J3E.
F1B/J2B.
H3E.
G3E.
Next question

Code: QQFI MUF stands for:
Highest possible frequency that will be reflected by the ionosphere.
Most utilised frequency.
Highest possible frequency that can be made with an HF-transmitter on board.
Most effective frequency, to make a connection with an HF-transmitter.
Next question

Code: GJCX Which of the following frequencies is used by the NAVTEX system?
121,5 MHz.
518 kHz.
156,8 MHz.
2 182 kHz.
Next question

Code: JRHI A VHF transmission range is mainly determined by:
The transmission power, propagation and the quality of the receiver.
The height of the aerial.
Whether it is radio-telephony, radio-telex or DSC.
The ocean region.
Next question

Code: WRUH The type of Inmarsat station A, B, C, M is recognized by:
The first four digits of the identification.
The first digit of the identification.
Last digit of the identification.
The first two digits of the identification.
Next question

Code: OQOS At what minimum height above sea level a SART transponder must be mounted?
2 metres.
1 metre.
0,5 metre.
The good working of a SART transponder doesn’t depend on the height above sea level.
Next question

Code: CONY A satellite receives the transmissions of the 406 MHz Cospas-Sarsat EPIRB. The transmissions of the EPIRB will be:
Exclusively passed on to a LUT if the satellite sees both the EPIRB and the LUT.
Always passed on to a LUT.
Exclusively passed on to a LUT only between 70° N and 70° S.
Passed when the satellite in passing the equator.
Next question

Code: FFYR According to the rule of GMDSS, channel 70 is used for:
Distress traffic.
Alerting.
Distress and urgency traffic.
Urgent communications.
Next question

Code: SAGQ The ideal aerial length depends on:
The weather conditions.
The frequency chosen.
The modulation form chosen.
The class of transmission.
Next question

Code: MPUV A battery of 24 Volt supplies during 10 hours a current of 6 ampere. What is the capacity supplied?
48 Ah.
60 Ah.
144 Ah.
240 Ah.
Next question

Code: EPFC 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:
TX: 2 187,5 kHz RX: 2 182 kHz.
TX: 2 189,5 kHz RX: 2 177,0 kHz.
TX: 2 177,0 kHz RX: 2 177,0 kHz.
TX: 2 177,0 kHz RX: 2 189,5 kHz.
Next question

Code: CMTS A Cospas-Sarsat EPIRB can be used in:
Only in the sea-areas A2 and A3.
All sea-areas (A1 to A4).
Only in sea-area A4.
Only in the sea-areas A1, A2 and A3.
Next question

Code: DABD A distress-call, onboard via RCC, may only be given Receipt if:
The manager orders.
The OOW deems it necessary.
The captain orders.
OSC from the RCC concerned invites the vessels.
Next question

Code: FFFR All designated SAR aircraft and civil aircraft carry equipment operating on the international aeronautical distress frequencies (amplitude modulation). The aeronautical distress frequencies are:
127,8 MHz and/or 71,6 MHz.
121,5 MHz and/or 243,0 MHz.
123,8 MHz and/or 247,6 MHz.
243,1 MHz and/or 486,2 MHz.
Next question

Code: MXSP On the MF/HF transmitter-receiver there is a sensitivity control. Another name for this is:
AGC-gain.
RF-gain.
AF-gain.
LF-gain.
Next question

Code: KULO Which International Convention introduced the GMDSS?
GMDSS.
SOLAS.
STCW.
MERSAR.
Next question

Code: BANY The emergency battery of a GMDSS portophone:
Must be tested once a week.
Must be replaced before the expiry date is exceeded.
Cannot be replaced.
Must be charged after expiry date.
Next question

Code: XSPR The normal mode of operation for each coast station shall be indicated in:
The ITU List of Call signs and numerical identities of station used by the maritime mobile and maritime mobile-satellite services.
The ITU List of Coast Station.
The ITU List of Radiotermination and Special Services.
The ITU List of Ship Stations.
Next question

Code: KBXK If requested by a coastal radio station to participate in a rescue operation, what is the most important information you may give?
Your destination.
Your position, name, call sign and speed.
Your own cargo owner.
Your crews nationality.
Next question

Code: GBOK What are the NAVTEX messages categories which cannot be suppressed?
A, B, C.
A, B, D.
Weather forecasts.
Satnav messages.
Next question

Code: QRBC The typical “daylight-frequencies” for long distance transmission are located in the:
8 or 12 MHz-band.
16 or 22 MHz-band.
4 or 6 MHz-band.
VHF-band.
Next question

Code: MWIT The number of oscillations of a wave per seconds is called:
Class of emission.
Frequency.
Wavelength.
Period.
Next question

Code: FUBR The sensitivity of a communication receiver can be adjusted with:
Squelch.
RF-gain.
Clarifier.
AF-gain.
Next question

Code: AJUH The battery of an EPIRB should be changed:
Every 3 years.
Every 4 years.
Yearly.
Every 2 years.
Next question

Code: STQJ In the Inmarsat Maritime Communications Handbook one can find information about:
Radio telex commands.
2 digit code telex services.
Ship’s Inmarsat Id’s.
Numbers of fax subscribers.
Next question

Code: OJHX The prescribed test of an approved portable VHF radio set (portophone) must be done once a:
Week.
Month.
Year.
Quarter.
Next question

Code: XKYT You wish to send an e-mail using the Inmarsat-C installation. The message has to be composed in:
X25.
ASCII.
The 400 protocol.
National language of the LES.
Next question

Code: WSEL With maintenance of batteries it is of primary importance that:
There is proper relative humidity in the space where the batteries are stored.
The space where the batteries are stored is properly ventilated.
The space is not oily.
There is an absolute free access to the battery space.
Next question

Code: UPCJ What does the abbreviation VHF means?
Variable High Frequency.
Very High Frequency.
Variable Hertz Frequency.
Visual High Frequency.
Next question

Code: VSQN Inmarsat is short for:
International Maritime Safety Organisation.
International Maritime Satellite Organisation.
Internal Marine Safety Organisation.
International Maritime Satellite System.
Next question

Code: EGSU On area A1 the function “Transmission of ship to shore distress alerts” is mainly based on:
The use of HF DSC.
The use of VHF DSC.
The use of portable VHF.
The use of SART transponders.
Next question

Code: CKII For how long time should a “SARSAT COSPAS” epirb be able to operate on its batteries?
96 hours.
48 hours.
12 hours.
24 hours.
Next question

Code: OLLX Long distance communication in the HF-bands depends on:
Weather conditions.
Ionisation layers.
Satellites.
Ground wave.
Next question

Code: AHXB Sea area A4 is in maritime radio traffic sea area:
Upto 12 miles of land.
Outside the sea areas A1, A2 and A3.
Within VHF-radiotelephony-range of coast station, where continuous DSC-alarm is available.
With the exception of sea areas A1, A2 and A3, within the range of Inmarsat-satellites, where continuous alarm is available.
Next question

Code: KBCO 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:
67.
16.
85.
13.
Next question

Code: XNIP 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 must wait 5 minutes before repeating the call.
You must wait 3 minute minimum before repeating your call.
You can repeat your call immediately.
You must wait 1 minute minimum before repeating your call.
Next question

Code: DNJE For how long time should a SART transponder be able to operate in the active mode?
6 hours.
8 hours.
24 hours.
96 hours.
Next question

Code: OFXF Via a coast-station radio medical advice is asked using NBDP. What command has to be given after ga +?
pan +.
med +.
38 +.
Medical.
Next question

Code: XOCQ Give the command after ga + for the transmission of a “store and forward”-message with radio-telex:
stf…+.
tlx..+.
sta…+.
tlxstf.
Next question

Code: SKPM To receive distress alerting and MSI via an Inmarsat-C set vessels must have:
MF/HF radio telex scanner with printer.
SES or an EGC receiver.
Suitable for 518 kHz NAVTEX receiver.
A radio officer on board.
Next question

Code: JXXF Define the class of emission H3E:
Radiotelex and DSC – Frequency shift keying of sub-carrier with error correction.
Radiotelephony – Single sideband full carrier.
Radiotelephony – Frequency modulation.
Radiotelex and DSC – Frequency shift keying of carrier with error correction.
Next question

Code: TVTC The altitude effect of the reflection of radio waves in the ionosphere on the transmission range also depends on:
The sensitivity of the receiver.
The day/night situation.
The position of the pre-selector tuning-button.
The equipment used.
Next question

Code: EAXB According to the rules of GMDSS all vessels have to be equipped with:
A VHF in captains cabin.
A possibility to receive MSI.
At least three mariphones.
On both sides an EPIRB.
Next question

Code: KTJF If messages are received which aren’t intended for own ship:
They must only be passed to the master.
They must not be used for any purpose.
They must be forwarded to the company.
They must be noted in the radio log book.
Next question

Code: VPSJ You receive a distress alert on HF Radio. What should you do?
No response is necessary providing the vessel is more than 24 hours away.
Wait three minutes and if no acknowledgement is heard from a coast station you should relay the alert.
Relay the message immediately on 2 182 kHz.
Acknowledge receipt.
Next question

Code: OUOJ Dish aerials are used with:
Inmarsat-C and -M.
Inmarsat-B and -M.
Inmarsat-A and -C.
None of the mentioned.
Next question

Code: FDOF When a character in the NAVTEX message sent is not received in the proper way:
A closely resembling character will be printed.
Nothing or a special character will be printed.
The message will not be printed at all until, with repeated transmission, it can be automatically compared and corrected.
Any other character will be printed.
Next question

Code: QTYE When on HF band a DSC distress alert is received, you have to listen to:
2 182 kHz.
The radio-telex distress frequency in the band in which the DSC distress alert was received.
The radio telephony distress frequency in the band in which the DSC distress alert was received.
8 414,5 kHz (DSC distress frequency in 8 MHz).
Next question

Code: KTNG What is the first function of GMDSS?
Transmission and reception of on scene communication.
Reception of shore to ship distress alerts.
Transmission of ship to shore alerts.
Transmission and reception of signals for locating.
Next question

Code: PUUL 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.
Distress relay call.
Safety call.
Urgent call.
Distress call.
Next question

Code: VYLW The prescribed test of EPIRB, SART and portable VHF radio set must be entered in:
Maintenance manual.
Radio equipment manual.
Ship’s radio log.
Equipment survey.
Next question

Code: EXDR On board one can use the reflections in the ionosphere by the right choice of:
The length of the aerial.
The type of equipment.
The time of transmission.
The mode of transmission.
Next question

Code: SJOG 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?
Mobile Radio Service.
Accounting authority.
Public Correspondence Station.
Network Coordination Station.
Next question

Code: ULWC Which word will precede a routine message?
ROUTINE.
PAN-PAN.
No specific word will precede a routine message.
MAYDAY.
Next question

Code: ISXN An area within the radiotelephone coverage of at least one VHF coast station in which continuous DSC alerting is available is called:
ASN1.
A2.
A1.
Coastal area.
Next question

Code: FEWC 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 correct adjustment of the dimmer.
The amount of ionisation.
The correct adjustment of the clarifier.
Next question

Code: DYLL How will you start a cancelling message after you send by mistake a distress call on your VHF DSC equipment?
MAYDAY – All Stations – This is “SAINT-ROMAIN”.
PAN-PAN – All Stations – This is “SAINT-ROMAIN”.
All Stations – This is “SAINT-ROMAIN”.
SECURITE – All Stations – This is “SAINT-ROMAIN”.
Next question

Code: PWOI A distress alert on board may only be transmitted on explicit order of:
The safety officer.
The radio officer.
The captain.
The navigating officer on duty.
Next question

Code: SMBG Via Inmarsat-C a message is sent to an Inmarsat-C mailbox with a positive delivery notification (PDN). The ground station will:
send no PDN’s with messages intended for the mailbox.
Not send any PDN for this message.
Send a PDN, if the message has arrived in the mailbox.
Send a PDN, as soon as the message is collected from the mailbox.
Next question

Code: NWSS The following information must be given on the SART:
The name of the operator.
The MMSI number sent.
Date of replacement of the batteries.
The date of replacement of the hydrostatic release unit.
Next question

Code: LWAA What information has to be given to set up a radio telex-connection with a coast-station:
ARQ followed by the call sign of the coast station.
Telex number of the coast station.
ARQ followed by the coast-station’s ID-number.
FEC followed by the telex country-code of the coast-station.
Next question

Code: CPNV The propagation of radio-signals in the VHF-band is:
Strait.
Dependent on the hour of transmission (day or night).
Almost rectilinear.
Dependent on the power emmited and the temperature of the atmosphere.
Next question

Code: NEAR To choose the HF-band, the time difference between 2 stations:
Is multiplied by the hour at the transmitting station.
Is irrelevent.
Is important.
Is hardly relevant.
Next question

Code: YJCM Of the AM-signal:
Both amplitude and frequency of the carrier wave are variable.
Amplitude and frequency of the carrier wave are constant.
Amplitude is variable and frequency of the carrier wave is constant.
Is not dependent on the frequency and amplitude.
Next question

Code: MOMN A wire aerial for an MF/HF-transmitter must be suspended between isolators:
To prevent burns when touching the aerial.
To make the way for aerial currents as long as possible.
To prevent contact with earth.
To save energy.
Next question

Code: ENMD Which of the following is a coast station MMSI?
22753000.
227005300.
2275300.
227530000.
Next question

Code: YNDY The traffic list of a coast-station is a list of:
Names of ships which, on behalf of safety at sea, are being routed by a traffic control system.
Name of ship’s scheduled for berthing.
Call-signs of ships for which a radio-telephone call, a telegram or another call is intended.
Pertinent navigational and weather information.
Next question

Code: OXKW 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.
Next question

Code: JSAJ The “clarifier” has only effect during:
Transmitting in mode J3E.
Transmitting in mode H3E.
Receiving in mode J3E.
Receiving in mode H3E.
Next question

Code: FGVG VHF channel 15 is:
Contra-ship channel.
Public traffic channel.
Inter-ship channel.
Distress channel.
Next question

Code: RXRO What is the purpose of the radiotelephony two tone alarm?
Alert COSPAS/SARSAT satellites.
Activate bridge watchkeeping receivers.
Activate bridge watchkeeping receivers and attract the attention of the person on watch.
Attract the attention of the person on watch.
Next question

Code: VPSJ You receive a distress alert on HF Radio. What should you do?
No response is necessary providing the vessel is more than 24 hours away.
Relay the message immediately on 2 182 kHz.
Wait three minutes and if no acknowledgement is heard from a coast station you should relay the alert.
Acknowledge receipt.
Next question

Code: BSDA Automatic amplifier regulation is used for the following reasons:
With bad weather the signal is amplified.
With strong incoming signals distortion is reduced.
With weak incoming signals distortion is reduced.
With absence of incoming signals noise is reduced.
Next question

Code: AJSP The frequency 121,5 MHz is used for:
DSS VHF calls.
SART transponder.
SARSAT-COSPAS EPIRBS.
INMARSAT E EPIRBS.
Next question

Code: KHRV 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:
22 081,0 kHz.
2 228 kHz.
22 777,0 kHz.
The common receiving frequency for the 22 MHz band.
Next question

Code: LSRS What is the meaning of the abbreviation “RQ” at the end of a DSC sequence?
Problem of transmission.
Acknowledgement broadcast.
Acknowledgement request.
End of sequence.
Next question

Code: GGUQ 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:
Semi-simplex.
Simplex.
Semi-duplex.
Duplex.
Next question

Code: GHLS Which of the following is a ship MMSI?
2275300.
1227200.
227530000.
22753000.
Next question

Code: DTRU With what system is a NAVTEX-message transmitted?
JRC.
ARQ.
FEC.
SELFEC.
Next question

Code: IVMO Command of radio-traffic between vessels and coast stations lies:
With coast guard.
With the station that calls.
Always with the coast station.
With the station called.
Next question

Code: UAGL The word SATCOM is spelled conform the international phonetic alphabet:
Sierra, Able, Tripoli, Charlie, Oscar, Mike.
Sierra, Anna, Tango, Cornelies, Oslo, Mike.
Sierra, Alfa, Tango, Charlie, Oscar, Mike.
Sierra, Able, Tango, Cornelies, Oslo, Man.
Next question

Code: EAXB According to the rules of GMDSS all vessels have to be equipped with:
At least three mariphones.
On both sides an EPIRB.
A possibility to receive MSI.
A VHF in captains cabin.
Next question

Code: AJXS By reduced transmitting power is meant in VHF a power between:
5-10 watt.
6-25 watt.
0,5-1 watt.
100 watt.
Next question

Code: CETX The position of a 406 MHz Cospas-Sarsat EPIRB is:
Determined by satellites by means of directional aerials.
Transmitted by the ship.
Measured by the “dopler” shift in the signals.
Passed on by the EPIRB to the satellite.
Next question

Code: CRTJ In the Maritime Radio Traffic the order of priority is:
Urgency traffic, distress traffic, safety traffic.
Safety traffic, distress traffic, urgency traffic.
Distress traffic, urgency traffic, safety traffic.
Urgency traffic, safety traffic, routine traffic.
Next question

Code: LEMO The DSC-controller display the following: DOO: 244562000 CH16; S distress sinking. After receiving this DSC message the following is done immediately:
Give a “DSC-acknowledgement”.
Call the Chief officer.
Listen out on VHF channel 16.
Send a “distress alert relay”.
Next question

Code: ISXN An area within the radiotelephone coverage of at least one VHF coast station in which continuous DSC alerting is available is called:
ASN1.
A2.
A1.
Coastal area.
Next question

Code: SBCM Distress MF communications should normally be operated:
In J3E mode – on duplex basis.
In G3E mode – on duplex basis.
In J3E mode – on simplex basis.
In G3E mode – on simplex basis.
Next question

Code: QDGL The Satellite orbit in the Cospas-Sarsat system is:
Semi-geostationary.
Helio-synchronous.
Polar.
Geostationary.
Next question

Code: OXKW If a coast-station doesn’t answer a call on VHF working channel or doesn’t send a reply signal:
You must call on distress channel.
You can repeat your call after 2 minutes.
You must call on another working channel.
You can repeat your call immediately when convinced that no other radio traffic is interfered with.
Next question

Code: MELX MF communication is usually provided by:
Sky wave.
Space wave.
Ground wave.
None of the mentioned.
Next question

Code: RKPG According to the rules of GMDSS vessels one must be able to receive MSI with the aid of:
Emergency portable radio.
HF and VHF DSC-encoder.
NAVTEX and EGC-receiver.
EPIRB and SART.
Next question

Code: OQHJ The number of oscillations of a wave per seconds is called:
Class of emission.
Period.
Frequency.
Wavelength.
Next question

Code: CBJF The compulsory testing of a prescribed EPIRB is to be done:
Once in 4 years.
Once a week.
Once a month.
Once a year.
Next question

Code: HQQW The category of a DSC-call determines:
How the rest of the call is to be composed.
For whom the message is destined.
The degree of priority.
How to conduct search and rescue.
Next question

Code: AKRW According to the rules of GMDSS vessels are equipped with certain radio-communication devices depending on:
Their tonnage.
Type of vessel.
The trading sea areas.
Flag state.
Next question

Code: OGXE Modulation is:
Deleting carrier wave.
Detecting frequency.
Blending LF & HF signals.
To enhance the side bands in relation to the carrier wave.
Next question

Code: EPEH By frequency is meant:
Wave length of a loop.
Time lapse of vibrations.
Number of vibrations per unit of time.
Number of vibrations.
Next question

Code: RFPA By wave length is understood:
The propagation speed of a radio vibration in free space.
The propagation direction of a radio vibration.
The distance travelled by a radio vibration in a period.
The length of a single spike in a wave.
Next question

Code: DLGY A DSC-notice should be sent on VHF-channel:
67.
13.
70.
16.
Next question

Code: DFLS A DSC distress alert is received. The message states that communication by radiotelex is prefered. One preferably uses:
SELFEC mode.
JRC mode.
ARQ mode.
FEC mode.
Next question

Code: MKGM The log-in of an Inmarsat-C installation is important:
To inform the LES, that one is available for messages offered.
To keep watch on Sat-C for safety messages.
To inform the addressee, that one is available for messages offered.
To inform the NSC that one is available for messages offered.
Next question

Code: OCSO The MF/HF-transceiver on board is tuned to the assigned frequency of a station. To make this connection the following mode is used:
J2B.
H3E.
G3E.
J3E.
Next question

Code: PBQI The ID of an Inmarsat-M station on board starts with:
4.
3.
1.
6.
Next question

Code: SIXI On which frequency a ship must maintain a continuous watch when sailing in area A2?
2 182 kHz.
8 414,5 kHz.
4 207,5 kHz.
2 187,5 kHz.
Next question

Code: UQXF Silencing by a station, not in charge of the distress-traffic, is done as follows:
“SEELONCE MAYDAY” followed by the silencing station’s call-sign.
“SEELONCE MAYDAY” followed by the call-sign of the ship in distress.
“SILENCE DISTRESS” followed by call sign of the ship in distress.
“SEELONCE DISTRESS” followed by the silencing station’s call-sign.
Next question

Code: ECSD 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:
KNMI in Holland.
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.
Next question

Code: JDTO Which equipment will detect a signal from a SART transponder?
Radio Direction Finder.
S band radar.
DSC receiver.
X band radar.
Next question

Code: HCCJ What HF-band is generally suitable for long distance transmission if one of two stations is Located in twilight?
16 MHz.
22 MHz.
4 MHz.
12 MHz.
Next question

Code: UPVQ The batteries must be placed in a well ventilated place, so that:
The person can work in the compartment.
There is sufficient oxygen available for optimum working of the batteries.
The production of detonating gas can be prevented.
The detonating gas can be discharged.
Next question

Code: KMAT Define the class of emission G3E:
Radiotelex and DSC – Frequency shift keying of carrier with error correction.
Radiotelephony – Frequency Modulation.
Radiotelex and DSC – Frequency shift keying of sub-carrier with error correction.
Radiotelephony – Phase Modulation.
Next question

Code: QUUS A distress alert sent by Inmarsat to an RCC is sent via:
LUT.
NCS.
The managers office.
LES.
Next question

Code: AHGM What do you understand by the initials EPIRB?
This means: Emergency Plotting Indicator Response Beacon.
This means: Emergency Personal Indicator Rescue Beacon.
This means: Emergency Plotting Indicator Rescue Beacon.
This means: Emergency Position Indicating Radio Beacon.
Next question

Code: MYBP 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?
Victor-Victor (3 times).
MAYDAY-MAYDAY (3 times).
SECURITE-SECURITE (3 times).
PAN-PAN (3 times).
Next question

Code: BVJN 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.
VHF-channel 16.
VHF-channel 87.
Next question

Code: CPKJ By the degree of selectivity of a receiver is meant:
Ability to receive all signals.
Ability to prevent variations in the strength of radio frequency signal received.
Ability to distinguish weak stations from adjacent stronger stations.
Ability to make weak stations audible.
Next question

Code: RKIX Under GMDSS rules the trading area A1 can be considered to be:
Polar region.
Within range of MF coast radio stations.
Within the coverage of Inmarsat.
Within range of VHF coast radio stations.
Next question

Code: FCIN In maritime communication two international treaties are primarily involved. They are:
SOLAS and the international treaty for messaging.
The SOLAS and its rules.
GMDSS hand book and MERSAR.
The IMO at London and the ITU at Geneva.
Next question

Code: NIDQ 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?
T T T (Telegraphy) / SECURITE (Telephony).
X X X (Telegraphy) / PAN-PAN (Telephony).
F F F (Telegraphy) / RESCUE-RESCUE (Telephony).
S O S (Telegraphy) / MAYDAY (Telephony).
Next question

Code: KUPP With an Inmarsat-C installation there is the addressing-option “special”. Via this option:
You can plan a message to be delivered at a special time.
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”.
Next question

Code: VJLS 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.
Yes.
Next question

Code: PUUL 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.
Distress relay call.
Safety call.
Distress call.
Urgent call.
Next question

Code: CIUL How often must inspection of proper working of the EPIRB’s and SART’s take place on board? Once per:
Week.
Every day.
14 days.
Month.
Next question

Code: DOOF The wavelength of a radio-signal reflected against the F-layer may be:
15 m.
15 cm.
1,5 m.
150 m.
Next question

Code: STQL What does the abbreviation DSC means?
Digital Selective Call.
Distress and safety call.
Digital Safety Call.
Distress Selective Call.
Next question

Code: CHYN The squelch on the control panel of a VHF-sat serves to:
Adjust the threshold level for admitting signals and refusing noise.
Adjust the sound level of the signal received.
Adjust the receivers volume.
Adjust the proportion of atmospheric noise in receiving the spoken word.
Next question

Code: AQBN The different layers in the ionosphere, important for radio propagation, are effected by:
The Sun.
The distance between the transmitter and the receiver.
Direction of the antenna.
The weather conditions.
Next question

Code: QKLW 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 testing-mode of the ever present VHF-DSC-EPIRB.
The obligatory monthly transmission from the RCC’s.
Next question

Code: LMQS 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).
PAN PAN (3 times).
MAYDAY MAYDAY (3 times).
VICTOR VICTOR (3 times).
Next question

Code: MFDO A SART must be visible on the ship’s radar from a distance of at least:
5 miles.
30 miles.
10 miles.
50 miles.
Next question

Code: FRFG With an EPIRB:
You must check the date the battery must be replaced.
You must check if it is attached properly to a railing with the required line.
You must check the manufacturer of the battery.
You must check the working of the charger and check the loaded condition of the battery.
Next question

Code: QHEK Which word will precede a safety message?
SECURITY.
SAFETY.
PAN PAN.
URGENT.
Next question

Code: FQVC 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.
Next question

Code: DQEU The exact position of a 406 MHz COSPAS SARSAT EPIRB is eventually calculated by:
The satellite.
LUT.
The EPIRB.
Ship Manager.
Next question

Code: PTEU What statement is correct with frequency modulation?
Frequency modulation is often applied in the maritime VHF-range (band).
The amplitude fluctuating an LF-rhythm.
The amplitude remain constant.
The frequency is constant.
Next question

Code: JWHU DSC uses for automatic identification the MMSI. The identification 002442000 is assigned to:
A coast-station or coast guard-station.
A group of vessels.
A type of vessels.
A vessel.
Next question

Code: WYYU The type-indication of the radio set is mentioned in:
The safety certificate.
The survey of equipment.
The equipment appendix.
Registry certificate.
Next question

Code: LMXF In radio-telex distress traffic preference is given to FEC because:
Everybody can read along.
Reporting is faster.
A record is maintained.
The system automatically requests repetition when reception garbled.
Next question

Code: YNDB 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.
Reference number.
Code in letters which will be repeated when the telex has been delivered to the subscriber.
Next question

Code: SBVR To get proper conversation discipline in maritime radio traffic:
Only necessary radio conversations are made in a concise and businesslike way.
Communication should be done only as per company’s prescribed schedule.
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.
Next question

* In some questions may be more, than one right answer.

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