Welcome to the website where you can find answers for the CES test on the subject «Radio Communication, GMDSS». This site will help you as a marine specialist improve your knowledge with the help of open information, where you can find questions as well as answers for them. 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.
«Radio Communication, GMDSS» subject includes theoretical and practical information about safety working with electrical equipment. Knowledge of this information directly shows employee’s competence who holds a relevant post on a vessel. Radio communication is a critical aspect of maritime operations, and the Global Maritime Distress and Safety System (GMDSS) was developed to enhance safety and improve communication in distress situations. The GMDSS is an internationally recognized set of regulations that standardizes radio communication procedures, equipment, and frequencies across the globe. Officer radio communication duties may include monitoring distress frequencies, responding to distress calls, coordinating with other vessels and etc.
This page contains answers to Seagull CES (Crew Evaluation System) test about Radio Communication, GMDSS, and serve as a database of questions and answers, using which seafarer can prepare to exams for getting certificate of competence, or just to challenge yourself with knowledge in this theme.
CES – 3rd Officer, Radiocommunication, GMDSS.pdf
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Amount of questions: 198.
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Code: KRVT Which of the following is a Accounting Authority Identification Code?
FR01.
227990850.
2 187,5.
F1B.
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.
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.
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.
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.
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.
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.
Code: JRHG Which wave length applies to a frequency of 2 000 kHz?
150 mtr.
1 500 mtr.
15 mtr.
15 000 mtr.
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.
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.
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.
Code: OUOJ Dish aerials are used with:
Inmarsat-B and -M.
Inmarsat-C and -M.
Inmarsat-A and -C.
None of the mentioned.
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.
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.
Code: RUQY VHF channel 6 is:
Inter-ship channel.
Intra-ship channel.
Safety channel.
Public traffic channel.
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.
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.
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.
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.
Code: GBOK What are the NAVTEX messages categories which cannot be suppressed?
A, B, D.
Weather forecasts.
Satnav messages.
A, B, C.
Code: MGVT The hydrostatic release of an EPIRB should be changed:
Every 2 years.
Every 4 years.
Every 3 years.
Yearly.
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.
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.
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.
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.
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.
Code: GLRY Which word will precede an urgency message?
PAN-PAN.
PAN.
URGENCE.
MAYDAY.
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.
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.
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.
Code: AYOU What is the emergency frequency on MF (Medium Frequency) radio?
2 182 Hz.
1 616 Hz.
2 617 Hz.
1 718 Hz.
Code: RGYC Which of the following services is not provided by Inmarsat-C?
Telephone.
Safetynet.
Fleetnet.
Telex.
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.
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.
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.
Code: ARAF How are the NAVTEX areas identified?
By two letters.
By one letter and one digit.
By one digit.
By one letter.
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.
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.
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.
Code: IFFT Which class of emission is used for VHF radio telephony transmissions?
G3E.
H3E.
G2B.
J2B.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Code: KTIH What is SITREP an abbreviation for:
Situation Report.
Ship Indication Transmission Equipment.
Survivor Indication Transponder Equipment.
Ship Transmit Emergency Radio.
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.
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.
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.
Code: XHGT What is the acronym FR 01?
AAIC.
MMSI.
MSI.
Call sign.
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.
Code: NTJX You want to send a DSC-call in connection with a shore telephone-call. You must choose:
Routine.
Distress.
Safety.
Urgency.
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.
Code: IJNO What mode must be used on the MF/HF transmission when making a radiotelephone call?
J3E.
F1B/J2B.
H3E.
G3E.
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.
Code: GJCX Which of the following frequencies is used by the NAVTEX system?
518 kHz.
121,5 MHz.
156,8 MHz.
2 182 kHz.
Code: JRHI 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 ocean region.
Code: WRUH The type of Inmarsat station A, B, C, M is recognized by:
The first digit of the identification.
The first four digits of the identification.
Last digit of the identification.
The first two digits of the identification.
Code: OQOS At what minimum height above sea level a SART transponder must be mounted?
1 metre.
2 metres.
0,5 metre.
The good working of a SART transponder doesn’t depend on the height above sea level.
Code: CONY 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 if the satellite sees both the EPIRB and the LUT.
Exclusively passed on to a LUT only between 70° N and 70° S.
Passed when the satellite in passing the equator.
Code: FFYR According to the rule of GMDSS, channel 70 is used for:
Alerting.
Distress traffic.
Distress and urgency traffic.
Urgent communications.
Code: SAGQ The ideal aerial length depends on:
The frequency chosen.
The weather conditions.
The modulation form chosen.
The class of transmission.
Code: MPUV A battery of 24 Volt supplies during 10 hours a current of 6 ampere. What is the capacity supplied?
60 Ah.
48 Ah.
144 Ah.
240 Ah.
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: 2 189,5 kHz RX: 2 177,0 kHz.
TX: 2 187,5 kHz RX: 2 182 kHz.
TX: 2 177,0 kHz RX: 2 177,0 kHz.
TX: 2 177,0 kHz RX: 2 189,5 kHz.
Code: CMTS A Cospas-Sarsat EPIRB can be used in:
All sea-areas (A1 to A4).
Only in the sea-areas A2 and A3.
Only in sea-area A4.
Only in the sea-areas A1, A2 and A3.
Code: DABD A distress-call, onboard via RCC, may only be given Receipt if:
The OOW deems it necessary.
The manager orders.
The captain orders.
OSC from the RCC concerned invites the vessels.
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:
121,5 MHz and/or 243,0 MHz.
127,8 MHz and/or 71,6 MHz.
123,8 MHz and/or 247,6 MHz.
243,1 MHz and/or 486,2 MHz.
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.
Code: KULO Which International Convention introduced the GMDSS?
SOLAS.
GMDSS.
STCW.
MERSAR.
Code: BANY The emergency battery of a GMDSS portophone:
Must be replaced before the expiry date is exceeded.
Must be tested once a week.
Cannot be replaced.
Must be charged after expiry date.
Code: XSPR The normal mode of operation for each coast station shall be indicated in:
The ITU List of Coast Station.
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 Radiotermination and Special Services.
The ITU List of Ship Stations.
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 position, name, call sign and speed.
Your destination.
Your own cargo owner.
Your crews nationality.
Code: GBOK What are the NAVTEX messages categories which cannot be suppressed?
A, B, D.
A, B, C.
Weather forecasts.
Satnav messages.
Code: QRBC The typical “daylight-frequencies” for long distance transmission are located in the:
16 or 22 MHz-band.
8 or 12 MHz-band.
4 or 6 MHz-band.
VHF-band.
Code: MWIT The number of oscillations of a wave per seconds is called:
Frequency.
Class of emission.
Wavelength.
Period.
Code: FUBR The sensitivity of a communication receiver can be adjusted with:
RF-gain.
Squelch.
Clarifier.
AF-gain.
Code: AJUH The battery of an EPIRB should be changed:
Every 4 years.
Every 3 years.
Yearly.
Every 2 years.
Code: STQJ In the Inmarsat Maritime Communications Handbook one can find information about:
2 digit code telex services.
Radio telex commands.
Ship’s Inmarsat Id’s.
Numbers of fax subscribers.
Code: OJHX The prescribed test of an approved portable VHF radio set (portophone) must be done once a:
Month.
Week.
Year.
Quarter.
Code: XKYT You wish to send an e-mail using the Inmarsat-C installation. The message has to be composed in:
ASCII.
X25.
The 400 protocol.
National language of the LES.
Code: WSEL With maintenance of batteries it is of primary importance that:
The space where the batteries are stored is properly ventilated.
There is proper relative humidity in the space where the batteries are stored.
The space is not oily.
There is an absolute free access to the battery space.
Code: UPCJ What does the abbreviation VHF means?
Very High Frequency.
Variable High Frequency.
Variable Hertz Frequency.
Visual High Frequency.
Code: VSQN Inmarsat is short for:
International Maritime Satellite Organisation.
International Maritime Safety Organisation.
Internal Marine Safety Organisation.
International Maritime Satellite System.
Code: EGSU On area A1 the function “Transmission of ship to shore distress alerts” is mainly based on:
The use of VHF DSC.
The use of HF DSC.
The use of portable VHF.
The use of SART transponders.
Code: CKII For how long time should a “SARSAT COSPAS” epirb be able to operate on its batteries?
48 hours.
96 hours.
12 hours.
24 hours.
Code: OLLX Long distance communication in the HF-bands depends on:
Ionisation layers.
Weather conditions.
Satellites.
Ground wave.
Code: AHXB Sea area A4 is in maritime radio traffic sea area:
Outside the sea areas A1, A2 and A3.
Upto 12 miles of land.
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.
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:
16.
67.
85.
13.
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 3 minute minimum before repeating your call.
You must wait 5 minutes before repeating the call.
You can repeat your call immediately.
You must wait 1 minute minimum before repeating your call.
Code: DNJE For how long time should a SART transponder be able to operate in the active mode?
8 hours.
6 hours.
24 hours.
96 hours.
Code: OFXF Via a coast-station radio medical advice is asked using NBDP. What command has to be given after ga +?
med +.
pan +.
38 +.
Medical.
Code: XOCQ Give the command after ga + for the transmission of a “store and forward”-message with radio-telex:
tlx..+.
stf…+.
sta…+.
tlxstf.
Code: SKPM To receive distress alerting and MSI via an Inmarsat-C set vessels must have:
SES or an EGC receiver.
MF/HF radio telex scanner with printer.
Suitable for 518 kHz NAVTEX receiver.
A radio officer on board.
Code: JXXF Define the class of emission H3E:
Radiotelephony – Single sideband full carrier.
Radiotelex and DSC – Frequency shift keying of sub-carrier with error correction.
Radiotelephony – Frequency modulation.
Radiotelex and DSC – Frequency shift keying of carrier with error correction.
Code: TVTC The altitude effect of the reflection of radio waves in the ionosphere on the transmission range also depends on:
The day/night situation.
The sensitivity of the receiver.
The position of the pre-selector tuning-button.
The equipment used.
Code: EAXB According to the rules of GMDSS all vessels have to be equipped with:
A possibility to receive MSI.
A VHF in captains cabin.
At least three mariphones.
On both sides an EPIRB.
Code: KTJF If messages are received which aren’t intended for own ship:
They must not be used for any purpose.
They must only be passed to the master.
They must be forwarded to the company.
They must be noted in the radio log book.
Code: VPSJ 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.
Acknowledge receipt.
Code: OUOJ Dish aerials are used with:
Inmarsat-B and -M.
Inmarsat-C and -M.
Inmarsat-A and -C.
None of the mentioned.
Code: FDOF When a character in the NAVTEX message sent is not received in the proper way:
Nothing or a special character will be printed.
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.
Any other character will be printed.
Code: QTYE When on HF band a DSC distress alert is received, you have to listen to:
The radio telephony distress frequency in the band in which the DSC distress alert was received.
2 182 kHz.
The radio-telex distress frequency in the band in which the DSC distress alert was received.
8 414,5 kHz (DSC distress frequency in 8 MHz).
Code: KTNG What is the first function of GMDSS?
Transmission of ship to shore alerts.
Transmission and reception of on scene communication.
Reception of shore to ship distress alerts.
Transmission and reception of signals for locating.
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.
Urgent call.
Distress relay call.
Safety call.
Distress call.
Code: VYLW The prescribed test of EPIRB, SART and portable VHF radio set must be entered in:
Ship’s radio log.
Maintenance manual.
Radio equipment manual.
Equipment survey.
Code: EXDR On board one can use the reflections in the ionosphere by the right choice of:
The time of transmission.
The length of the aerial.
The type of equipment.
The mode of transmission.
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?
Public Correspondence Station.
Mobile Radio Service.
Accounting authority.
Network Coordination Station.
Code: ULWC Which word will precede a routine message?
No specific word will precede a routine message.
ROUTINE.
PAN-PAN.
MAYDAY.
Code: ISXN An area within the radiotelephone coverage of at least one VHF coast station in which continuous DSC alerting is available is called:
A1.
ASN1.
A2.
Coastal area.
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 button band width.
The correct adjustment of the dimmer.
The correct adjustment of the clarifier.
Code: DYLL How will you start a cancelling message after you send by mistake a distress call on your VHF DSC equipment?
All Stations – This is “SAINT-ROMAIN”.
MAYDAY – All Stations – This is “SAINT-ROMAIN”.
PAN-PAN – All Stations – This is “SAINT-ROMAIN”.
SECURITE – All Stations – This is “SAINT-ROMAIN”.
Code: PWOI A distress alert on board may only be transmitted on explicit order of:
The captain.
The safety officer.
The radio officer.
The navigating officer on duty.
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 a PDN, if the message has arrived in the mailbox.
send no PDN’s with messages intended for the mailbox.
Not send any PDN for this message.
Send a PDN, as soon as the message is collected from the mailbox.
Code: NWSS The following information must be given on the SART:
Date of replacement of the batteries.
The name of the operator.
The MMSI number sent.
The date of replacement of the hydrostatic release unit.
Code: LWAA What information has to be given to set up a radio telex-connection with a coast-station:
ARQ followed by the coast-station’s ID-number.
ARQ followed by the call sign of the coast station.
Telex number of the coast station.
FEC followed by the telex country-code of the coast-station.
Code: CPNV The propagation of radio-signals in the VHF-band is:
Almost rectilinear.
Strait.
Dependent on the hour of transmission (day or night).
Dependent on the power emmited and the temperature of the atmosphere.
Code: NEAR To choose the HF-band, the time difference between 2 stations:
Is important.
Is multiplied by the hour at the transmitting station.
Is irrelevent.
Is hardly relevant.
Code: YJCM 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.
Amplitude and frequency of the carrier wave are constant.
Is not dependent on the frequency and amplitude.
Code: MOMN 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.
To save energy.
Code: ENMD Which of the following is a coast station MMSI?
2275300.
22753000.
227005300.
227530000.
Code: YNDY 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.
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.
Pertinent navigational and weather information.
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 another working channel.
You can repeat your call after 2 minutes.
You must call on distress channel.
You can repeat your call immediately when convinced that no other radio traffic is interfered with.
Code: JSAJ The “clarifier” has only effect during:
Receiving in mode J3E.
Transmitting in mode J3E.
Transmitting in mode H3E.
Receiving in mode H3E.
Code: FGVG VHF channel 15 is:
Inter-ship channel.
Contra-ship channel.
Public traffic channel.
Distress channel.
Code: RXRO What is the purpose of the radiotelephony two tone alarm?
Activate bridge watchkeeping receivers and attract the attention of the person on watch.
Alert COSPAS/SARSAT satellites.
Activate bridge watchkeeping receivers.
Attract the attention of the person on watch.
Code: VPSJ 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.
Acknowledge receipt.
Code: BSDA Automatic amplifier regulation is used for the following reasons:
With weak incoming signals distortion is reduced.
With bad weather the signal is amplified.
With strong incoming signals distortion is reduced.
With absence of incoming signals noise is reduced.
Code: AJSP The frequency 121,5 MHz is used for:
SARSAT-COSPAS EPIRBS.
DSS VHF calls.
SART transponder.
INMARSAT E EPIRBS.
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:
22 777,0 kHz.
22 081,0 kHz.
2 228 kHz.
The common receiving frequency for the 22 MHz band.
Code: LSRS What is the meaning of the abbreviation “RQ” at the end of a DSC sequence?
Acknowledgement request.
Problem of transmission.
Acknowledgement broadcast.
End of sequence.
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-duplex.
Semi-simplex.
Simplex.
Duplex.
Code: GHLS Which of the following is a ship MMSI?
227530000.
2275300.
1227200.
22753000.
Code: DTRU With what system is a NAVTEX-message transmitted?
FEC.
JRC.
ARQ.
SELFEC.
Code: IVMO Command of radio-traffic between vessels and coast stations lies:
Always with the coast station.
With coast guard.
With the station that calls.
With the station called.
Code: UAGL The word SATCOM is spelled conform the international phonetic alphabet:
Sierra, Alfa, Tango, Charlie, Oscar, Mike.
Sierra, Able, Tripoli, Charlie, Oscar, Mike.
Sierra, Anna, Tango, Cornelies, Oslo, Mike.
Sierra, Able, Tango, Cornelies, Oslo, Man.
Code: EAXB According to the rules of GMDSS all vessels have to be equipped with:
A possibility to receive MSI.
At least three mariphones.
On both sides an EPIRB.
A VHF in captains cabin.
Code: AJXS By reduced transmitting power is meant in VHF a power between:
0,5-1 watt.
5-10 watt.
6-25 watt.
100 watt.
Code: CETX The position of a 406 MHz Cospas-Sarsat EPIRB is:
Measured by the “dopler” shift in the signals.
Determined by satellites by means of directional aerials.
Transmitted by the ship.
Passed on by the EPIRB to the satellite.
Code: CRTJ In the Maritime Radio Traffic the order of priority is:
Distress traffic, urgency traffic, safety traffic.
Urgency traffic, distress traffic, safety traffic.
Safety traffic, distress traffic, urgency traffic.
Urgency traffic, safety traffic, routine traffic.
Code: LEMO The DSC-controller display the following: DOO: 244562000 CH16; S distress sinking. After receiving this DSC message the following is done immediately:
Listen out on VHF channel 16.
Give a “DSC-acknowledgement”.
Call the Chief officer.
Send a “distress alert relay”.
Code: ISXN An area within the radiotelephone coverage of at least one VHF coast station in which continuous DSC alerting is available is called:
A1.
ASN1.
A2.
Coastal area.
Code: SBCM Distress MF communications should normally be operated:
In J3E mode – on simplex basis.
In J3E mode – on duplex basis.
In G3E mode – on duplex basis.
In G3E mode – on simplex basis.
Code: QDGL The Satellite orbit in the Cospas-Sarsat system is:
Polar.
Semi-geostationary.
Helio-synchronous.
Geostationary.
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 another working channel.
You must call on distress channel.
You can repeat your call after 2 minutes.
You can repeat your call immediately when convinced that no other radio traffic is interfered with.
Code: MELX MF communication is usually provided by:
Ground wave.
Sky wave.
Space wave.
None of the mentioned.
Code: RKPG According to the rules of GMDSS vessels one must be able to receive MSI with the aid of:
NAVTEX and EGC-receiver.
Emergency portable radio.
HF and VHF DSC-encoder.
EPIRB and SART.
Code: OQHJ The number of oscillations of a wave per seconds is called:
Frequency.
Class of emission.
Period.
Wavelength.
Code: CBJF The compulsory testing of a prescribed EPIRB is to be done:
Once a month.
Once in 4 years.
Once a week.
Once a year.
Code: HQQW The category of a DSC-call determines:
The degree of priority.
How the rest of the call is to be composed.
For whom the message is destined.
How to conduct search and rescue.
Code: AKRW According to the rules of GMDSS vessels are equipped with certain radio-communication devices depending on:
The trading sea areas.
Their tonnage.
Type of vessel.
Flag state.
Code: OGXE Modulation is:
Blending LF & HF signals.
Deleting carrier wave.
Detecting frequency.
To enhance the side bands in relation to the carrier wave.
Code: EPEH By frequency is meant:
Number of vibrations per unit of time.
Wave length of a loop.
Time lapse of vibrations.
Number of vibrations.
Code: RFPA By wave length is understood:
The distance travelled by a radio vibration in a period.
The propagation speed of a radio vibration in free space.
The propagation direction of a radio vibration.
The length of a single spike in a wave.
Code: DLGY A DSC-notice should be sent on VHF-channel:
70.
67.
13.
16.
Code: DFLS A DSC distress alert is received. The message states that communication by radiotelex is prefered. One preferably uses:
FEC mode.
SELFEC mode.
JRC mode.
ARQ mode.
Code: MKGM The log-in of an Inmarsat-C installation is important:
To inform the NSC that one is available for messages offered.
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.
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:
J3E.
J2B.
H3E.
G3E.
Code: PBQI The ID of an Inmarsat-M station on board starts with:
6.
4.
3.
1.
Code: SIXI On which frequency a ship must maintain a continuous watch when sailing in area A2?
2 187,5 kHz.
2 182 kHz.
8 414,5 kHz.
4 207,5 kHz.
Code: UQXF Silencing by a station, not in charge of the distress-traffic, is done as follows:
“SEELONCE DISTRESS” followed by the silencing station’s call-sign.
“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.
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.
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.
Code: JDTO Which equipment will detect a signal from a SART transponder?
X band radar.
Radio Direction Finder.
S band radar.
DSC receiver.
Code: HCCJ What HF-band is generally suitable for long distance transmission if one of two stations is Located in twilight?
12 MHz.
16 MHz.
22 MHz.
4 MHz.
Code: UPVQ The batteries must be placed in a well ventilated place, so that:
The detonating gas can be discharged.
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.
Code: KMAT Define the class of emission G3E:
Radiotelephony – Phase Modulation.
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.
Code: QUUS A distress alert sent by Inmarsat to an RCC is sent via:
LES.
LUT.
NCS.
The managers office.
Code: AHGM What do you understand by the initials EPIRB?
This means: Emergency Position Indicating Radio Beacon.
This means: Emergency Plotting Indicator Response Beacon.
This means: Emergency Personal Indicator Rescue Beacon.
This means: Emergency Plotting Indicator Rescue Beacon.
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?
PAN-PAN (3 times).
Victor-Victor (3 times).
MAYDAY-MAYDAY (3 times).
SECURITE-SECURITE (3 times).
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:
VHF-channel 87.
Channel Delta of the coast station.
Radio telephony-channel 7 in the 8 MHz band.
VHF-channel 16.
Code: CPKJ By the degree of selectivity of a receiver is meant:
Ability to make weak stations audible.
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.
Code: RKIX Under GMDSS rules the trading area A1 can be considered to be:
Within range of VHF coast radio stations.
Polar region.
Within range of MF coast radio stations.
Within the coverage of Inmarsat.
Code: FCIN In maritime communication two international treaties are primarily involved. They are:
The IMO at London and the ITU at Geneva.
SOLAS and the international treaty for messaging.
The SOLAS and its rules.
GMDSS hand book and MERSAR.
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?
S O S (Telegraphy) / MAYDAY (Telephony).
T T T (Telegraphy) / SECURITE (Telephony).
X X X (Telegraphy) / PAN-PAN (Telephony).
F F F (Telegraphy) / RESCUE-RESCUE (Telephony).
Code: KUPP With an Inmarsat-C installation there is the addressing-option “special”. Via this option:
Give one of Inmarsat’s “special access codes”.
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.
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.
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.
Urgent call.
Distress relay call.
Safety call.
Distress call.
Code: CIUL How often must inspection of proper working of the EPIRB’s and SART’s take place on board? Once per:
Month.
Week.
Every day.
14 days.
Code: DOOF The wavelength of a radio-signal reflected against the F-layer may be:
15 m.
15 cm.
1,5 m.
150 m.
Code: STQL What does the abbreviation DSC means?
Digital Selective Call.
Distress and safety call.
Digital Safety Call.
Distress Selective Call.
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.
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.
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.
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).
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.
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.
Code: QHEK Which word will precede a safety message?
SECURITY.
SAFETY.
PAN PAN.
URGENT.
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.
Code: DQEU The exact position of a 406 MHz COSPAS SARSAT EPIRB is eventually calculated by:
The satellite.
LUT.
The EPIRB.
Ship Manager.
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.
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.
Code: WYYU The type-indication of the radio set is mentioned in:
The safety certificate.
The survey of equipment.
The equipment appendix.
Registry certificate.
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.
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.
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.
Code: FDJI What is the two letter signal, to be used by flags, radiotelephony or radiotelegraphy, meaning “Calling All Ships”?
CQ.
AS.
TT.
CA.
Test about Radio Communication, GMDSS
Try online
Sart works on X band radar…
Answer given above says S band radar
Thank you, fixed.