C2 New ( 56-150 )
GMDSS Emergency Communication Quiz
Test your knowledge on GMDSS emergency communication protocols with this comprehensive quiz. Covering key aspects of distress messaging, radio operation, and safety procedures, this quiz is perfect for aspiring maritime professionals and seasoned sailors alike.
Key Features:
- 94 challenging questions
- Multiple choice format
- Focus on maritime safety and communication regulations
Your vessel is on fire and require immediate assistance on what frequency you should used to send a distress message ?
You should send on 2182 khz a designated distress frequency
What ever frequency has the best chance of communicating a distress message
Use only frequencies used by police fire or emergency medical services
Use only frequencies that are within your operating priviledged
Under what condition you should relay a DSC Distress alert ?
You should never relay a Distress alert, the Coast station and RCC will do that
When the coast station determined further help is necessary
You can relay anytime if you feel deem necessary
If the mobile unit in Distress is incapable of sending further distress alert communication
What is the distress telegraphy message to be used when your vessel is threatened by a serious imminent danger and is need of immediate assistance ?
MAYDAY
PAN-PAN
TTT
SOS
You are about to abandon your ship as GMDDS Radio Operator, what is the first step to take in initiating a distress priority message via Inmarsat ?
By dialing the correct code on the telephone remote unit.
By contacting the CES operator using the radiotelephone distress procedure "Mayday"...etc.
By pressing a "Distress Button or Distress Hotkey" on the equipment
By contacting CES operator and announcing a distress condition is existence
How can the satelite signal be immediately remedied by means of a shipboard obstruction ?
Change the ship's course
Increase the receiver gain
Raise the transmit power level
Relocate the mast or other obstruction
You vessel is on fire and you require immediate assistance, how will you initiate your call using the VHF ?
MAYDAY spoken three times followed by the nature of your message
PAN-PAN spoken three times followed by your message
SECURITE spoken three times followed by the nature of your message
Press the distress key on the equipment and send your message
Under GMDSS, at what minimum intervals a compulsory VHF-DSC radio telephone installation must be tested ?
Once a week
Weekly
Monthly
Daily
You observed that the maximum usable frequencies varies during transmission, what most likely causes the effect ?
The temperature of the ionosphere
The type of weather just below the ionosphere
The amount of radiation received from the sun, mainly ultraviolet
The speed of the winds in the upper atmosphere
What is usually the first step for a GMDSS Radio Operator to take when initiating a distress priority message such as fire onboard via INMARSAT ?
Pressing a Distress Key on the equipment
Dialing the correct code on the telephone remote unit
Contacting the CES operator and announcing a distress condition is in existence
Contacting the CES operator using the radiotelephone distress procedure Mayday....etc.
You are preparing to abandon your ship, what type of signal must transmit to locate your position using your mobil unit ?
Radio Direction Signal
Alerting signal
Homing Signal
Radio Beacon
What frequencies in GMDSS equipment you should use on an "On Scene" communication between vessel in distress and the SAR Aircraft ?
VHF Ch-12, 4125 kHz, JF1B, 5680 kHz, J3E
VHF Ch-16, 4125 kHz, J3E, 3023 kHz, J3E
VHF Ch 70, 4125 kHz, J3E, 5680 kHz, J3E
VHF Ch-70, 4125 kHz, F1B 5680 kHz, J3E
The SART is required to have the sufficient battery capacity to operate in the stand-by mode for what period of time ?
Five days
Four days
Six days
Three days
Which of the following statements about maintenance requirement for GMDSS Equipment is FALSE ?
Compulsory vessels sailing in Sea Area A1 and A2 must provide any one of the three maintenance options which are duplication of equipment shore-base, or at sea maintenance capability
Compulsory vessel's sailing in Sea Areas A3 and A4 must provide two or three maintenance options which are duplication of equipment, shore-based or at sea maintenance capability.
If shore based maintenance is employed maintenance services are not required to be completed or performance confirmed unless the vessel sails to foreign ports
If compulsory vessels operating in Sea Area A4 are required to carry at least three licensed GMDSS Radio Operator
How do you prevent a powerful signal from " smothering" your receiver while listening to a neighboring station's transmission ?
Off the speaker and use headset
You should adjust the squelch
You should adjust the volume
You should lower the power output
What is the term which refers to supply of electrical energy required to supply radio installations on every ship for the purpose of conducting distress and safety radio communications in the event of failure of the ship's main and emergency sources of electrical power ?
Ship's emergency diesel generator
Reserve source of energy
Emergency power
Ship's standby generator
What step should you take after abandoning your ship boarding a survival craft ?
Throw the EPIRB and SART in the water to automatically activated.
Program the SART and EPIRB to transmit the vessel's location and situation
Ensure that the EPIRB and SART are activated until help arrived
Nothing to do as EPIRB and SART is activated automatically when remove from securing bracket
A fire occurred onboard your ship and you need assistance in sending a DSC message, how will you categorize your message ?
Precautions
Distress
Safety
Routine
What type of initial external message you should send if it its necessary to communicate about the fire onboard your vessel ?
Distress message to the MRCC and other ships
Urgency message to MRCC and all ships
Alert message to all ships
Advice message to all ships and MRCC
Which system is most likely to be affected by atmospheric disturbances ?
MF/HF radiotelephony
VHF DSC
INMARSAT Standard-C
Safety NET
Risk of chemical burns is one of the two hazards associated with lead acid batteries that you should be aware. What is the other hazard that you should give concern in dealing with lead acid ?
Risk of poisoning
Risk of explosion
Risk of suffocation
Risk of fire
Incase of power breakdown, what type of batteries most commonly used on board ships as source of backup power ?
Nickel-iron (NiFe) battery
Nickel-Cadmium (NiCd) battery
Lithium battery
Lead Battery
Why is it important to transmit a Distress message when you have fire onboard ?
The distress message is not necessary if you don't need immediate assistance
The distress message is necessary to alert other vessel and authorities
The distress message is necessary so that other vessel can approach you give assistance.
The distress message is not necessary because your situation is still on uncertainty phase
In accordance with the International Convention Maritime Search and Rescue, who is responsible for promoting the efficient organization of search and rescue service ?
On-Scene Commander (OSC)
Rescue Coordination Center
Ship Earth Station (SES)
Coordination Surface Search (CSS)
Which of the following unit as per IAMSAR is responsible for the efficient organizational of search and rescue ?
Ship Earth Station (SES)
Rescue Coordination Center (RCC)
On-Scene Commander (OSC)
Coordination Surface Search (CSS)
What is the main reason the radio transmission tend to be useful only for short-distance communication during daylight hours ?
Because of lack of activity
Because of D region absorption
Because of magnetic flux
Because of auroral propagation
Which of the following failures must be logged and notified to the Master when using 2182 kHz radiotelephone system ?
Failure to contact to a shore station 600 nautical miles distance during daytime operation.
Much higher noise level observed during daytime operation
When testing alarm to an artificial antenna the distress frequency watch receiver become unmuted
When talking to the microphone no power indicator output
What may form during the chemical process in battery charging ?
It may form highly explosive mixture if exposed to sunlight
It may form highly explosive mixture if exposed to chemical
It may form highly explosive if mixed with water
It may form highly explosive mixture if exposed to circuit
You are approaching another vessel and you see that the signal flag "J" is hoisted, what should you do ?
Attempt to call the vessel on VHF radiotelephone because she is requesting to communicate.
Proceed on present course and speed since the vessel is requesting a tug
Keep well clear of the vessel because she is either on fire and has dangeros cargo on board or she is leaking dangerous cargo
Approach the vessel with caution because she is dragging her anchor
You received a DSC fire alert on 8414.5 kHz in a Sea Area. What should you do if no acknowledgement from coast station within 3 minutes?
Acknowledge the distress alert by ang appropriate GMDSS equipment
No action to be done just proceed to your designation Acknowledge the distress alert by DSC
Acknowledge the distress alert by DSC
Transmit a DSC distress relay alert
Which of the following is defined as back-up power source that provides power to the radio installations for the purpose of conducting distress and safety communications when the vessel's main and emergency generators failed ?
Reserve Source of Energy (RSE)
Emergency Back-up Generator (EBG)
Reserve Source of Diesel Power (RSDP)
Emergency Diesel Generator (EDG)
If your ship is on fire, what priority signal will you use in sending your message by FAX ?
Urgent
Distress
Safety
Emergency
What are the hazard associated with lead acid batteries that you must be aware ?
Risk in exposing to chemical
Risk in exposing to circuit
Risk of explosion and corrosion
Risk of exposure to poisoning
In fully charged lead-acid battery, what will be the electrolyte's freezing point ?
The same as in a discharge battery
Higher than in a discharge battery, but the specific gravity will be less.
Lower than in a discharge battery
Higher than in a discharge battery
After the fire incident onboard your ship upon power-up, what controls are to be adjusted on a Inmarsat C terminal ?
No control to be adjusted
The receiver gain must adjusted to maxmimum
The antenna azimuth and elevation control
The Inmarsat terminal must be set to ocean region
What are the characteristic of the reserve source of energy under GMDSS ?
Can be independent of the propelling power of the ship
Supplies independent HF and MF installations at the same time
Must be incorporated into the ship's electrical system
Must be independent of the ship's electrical system
What frequency you should used if your vessel is on fire and requiring immediate assistance ?
What ever frequency that has the best chance of communicating the distress message
Use only the frequencies used by police, fire or emergency medical services
You should send on 2182 kHz as it is a designated distress frequency
Use only the frequencies that are within operating privileges
A GMDSS Radio Operator license holder is prohibited to undertake which of the following servicing or maintenance function ?
Routine battery maintenance if used as part of the GMDSS equipment
Reset tripped circuit breakers or replaced defective fuse
Any adjustments or maintenance that may affect the proper operation of the station
Replacement of consumable items such as paper, ribbons, etc.
You abandon your ship and boarded a survival craft. What should you do with your EPIRB and SART ?
Throw the EPIRB and SART in the water so that it will automatically activated
Make ready the EPIRB and SART activate when another vessel is in sight
Nothing to do EPIRB and SART is activated automatically when removed from the securing bracket
Ensure that the EPIRB and SART is activated until help arrived
What piece of required GMDSS equipment is the primary source of transmitting locating signals in the event of equipment failure ?
Handheld Transciever
RDF
EPIRB
SART
What is the cause of an individual battery cell to reverse polarity ?
Insufficient charging which does not bring all of the cells up to full charge
When a charging wire connected in a wrong way. ( negative to the position and the positive to the negative)
When discharging the battery string if a cell becomes weaker than the remaining cells, the discharge current will effectively charge the weaker cell in reverse polarity
High discharge rate without allowing for a cool down period
Why must the SART be mounted as high as possible in the survival craft ?
So that it will not get wet
To increase the range
To be seen better on the radar
Because it increases the power
Which of the following maintenance function is not a responsibility of the GMDSS Radio Operator ?
Aligning the power output stage for maximum power
Visual inspections of equipment including antenna and associated components
Perform on the air verification checks
Perform schedule testing of the battery charge condition
During abandon ship, which of the following types of EPIRB is most likely to be used to transmit a distress alert signal ?
406 MHz EPIRBs
S-Band EPIRBs
Class A EPIRBs
121.5/124.3 MHz EPIRBs
What is the substance produced during the battery charging process which requires battery charging rooms to be well ventilated ?
Highly poisonous gas
Explosive gases
Corrosives gasses
Highly combustible oxygen
Your vessel suffered a fire and its is out of control. You were ordered by the Master to make a distress call. How will you initiate a call by radiotelephony ?
SOS (3x)
PAN PAN (3x)
MAYDAY (3x)
SECURITY (3x)
What is the NAVTEX message which ensures that the system is functioning normally ?
G
B
A
Z
Your MF-HF whip antenna breaks off and is carried away by storm. What would you do regain operation on MF-HF frequencies ?
Rig a wire antenna 10-15 feet long from
Rig a horizontal center fed dipole antenna 40 feet long
Rig a long wire antenna at least 100 feet long
Rig a wire antenna approximately 35-75 feet long per the equipment instruction manual
Your antenna tuner becomes totally inoperative. What would you do to obtain operation on 2 HF bands ?
Without an operating antenna tuner, transmission is impossible
To bypass the antenna tuner, Use a straight whip or wire antenna approximately 30ft long
To bypass the antenna tuner and shorten the whip to 15 ft.
It is impossible to obtain operation on 2 different HF bands, without operating antenna tuner
If your antenna tuner becomes totally inoperative, what you do to obtain operation on 2 HF bands ?
Without operating antenna tuner, transmission is not possible
By pass the antenna tuner. Use a strait whip or wire antenna approximately 30 feet long
By pass the antenna tuner and shorten the whip to about 15 feet
It is impossible to obtain operation on 2 different HF bands without operating antenna
Your ship received a distress relay on DSC frequency 2187.5 kHz that a vessel is on fire. On what frequency by radio telephony would you acknowledge ?
4207.5 kHz
6312.0 kHz
2182.0 kHz
8290.0 kHz
At present the MF/HF transmitter often has an automatic aerial turning unit. Should this fail :
The transmitter will automatically keep operating off the MF and F distress frequencies
The transmitter will automatically keep operating on the MF and HF distress frequencies
Its always possible to put the turning unit in a fixed position, so the MF distress frequencies can still be used
It is not possible to put the turning unit in a fixed position, so the MF distress frequencies can still be used
What is the best way to minimize or prevent interference to other stations ?
By reducing power to a level that will not affect other on frequency communication
By using omnidirectional antenna pointed away from other station
By changing frequency when notified that your radio communications interfer
Determine the frequency is not use by monitoring the frequency before transmitting
What happen if your vessel is on fire and you begin a DSC distress transmission but do not include a message ?
The receiving station will poll the DSC unit of your vessel to download the necessary information.
The transmission will not be initiated and "ERROR" indicate on the display read out
The transmission is aborted and alarm sound will indicates that will advice you to provide information
The transmission will be made "default", information provided automatically
On a survival craft, you hear the SART's Audible tone, what does it mean ?
It is a sign when the battery charge condition is weak
It informs the survivor that a near by vessel signaling on DSC
It is informing you that assistance may be nearby
It informs the survivors when the SART switches to the "standby mode"
For distress call such as fire onboard, how will you initiate a call on VHF ?
Initiate a call on VHF Channel 70
Initiate a call on VHF Channel 69
Initiate a call on VHF Channel 16
Initiate a call on VHF Channel 13
You are on the vicinity of the search area of an abandon ship. How can you detect that a SART is transmitting in the immediate vicinity ?
The SART signal appears as a target which comes and goes in the effects of heavy swells
The SART's blips on the PPI will begin arcing and eventually becomes concentric circles
The SART can provide an approximate position location within a two nautical per IMO Standard
A unique two tone signal heard upon the automatic un-muting of the 2182 kHz receiver
During the Charging process what does it produce that requires battery charging well ventilated ?
Highly poisonous gas
Highly combustible
Corrosive gasses
Explosive gasses
Which statement is correct regarding a method that a vessel experiencing problems with shadowing of the Inmarsat B SES antenna by an onboard obstruction could use to attempt reliable communication ?
Change to other satellite region
Change the Coast Station ID programming
Change course to make the communication
Switch from telex to voice mode with require lower signal strength for proper operation
What's the unit measurement used to express the inductive reatance of a circuit ?
Ohms
Henrys
Farads
Mhos
Which of the following maintenance function may not be performed by the holder of a GMDSS Operator License ?
Any adjustment of maintenance that may affect the proper operation of the station
Replacement of consumable items such as paper, ribbons, etc
Reset tripped circuit breakers or replace defective fuses
Routine battery maintenance if used as part of GMDSS station
What is the minimum transmitter power level required for medium frequency transmitter aboard a compulsory fitted vessel ?
The power needed to communicate with the nearest public coast station operating on 2182 kHz
The power atleast 100 watts single side band suppressed carrier power
The power atleast 60 watts to communicate with the nearest public station operating a single sideband suppressed carrier power
The power atleast 25 watts delivered into 50 ohmns when operated with a primary voltage of 13.6 volts DC
Which statements is correct regarding the requirement for emergency and reserve power in GMDSS radio installations ?
An emergency power source for radio communication is not required if a vessel has proper reserve power (batteries)
Only one of the above is required if a vessel is equipped with a second 406 EPIRB as a backup means of sending a distress alert
All newly constructed ships under GMDSS must have both emergency and reserve power Sources for radio communication
A reserve power source is not required for radio communications
What is the most likely cause of SART Red LeD not turning on ?
Stock in active mode
Faulty PCB
Drift on PCB
SART in active mode
How would you measure the current drawn from a power supply by a receiver ?
The current meter should be placed in series with one of the receiver power leads
The current meter should be placed in series with both receiver power leads
The current meter should be placed in parallel with one of the receiver power leads
The current should be placed in parallel series with both receiver power supply leads
How often would you carry out a full specific gravity check of lead acid battery ?
Annually
Weekly
Monthly
Daily
What is the most likely reason for a message being erase from NAVTEX memory ?
The message are older than number 150
The lock message is set on
The unlock message is not set on
The 66 hours passed from the moment received
You are onboard a 500GT, how many SART must be installed to your ship ?
One
None
As required by administrator
Two
Which statement concerning GMDSS distress alerts such as fire onboard is TRUE ?
The information in distress alerts that is used to alert other vessel, including those in port, of existing weather warnings
The information contained in a distress alert includes the name and position of the distressed vessel and may include additional information such as the nature of the situation and what kind of assistance that may be required
The information contained in a message that alerts other vessel and may include additional information on existing navigational hazards in ort
The information in distress alert is advising vessels in the vicinity of a distress situation to leave the are without notifying the RCC that is overseeing operation
What occurs in ARQ when the information sending station (ISS) gets a signal indicating that the party check failed ?
The next block will be sent
The last block will be resent
The acknowledge light will illuminate
The data line will break
If your vessel is on fire and requiring immediate assistance, what is the two letters signal you should display ?
CD
AL
NC
PM
If your vessel is on fire and requiring immediate assistance, what frequency you should use ?
Use only the frequencies that are within your operating privileges
Use only the frequencies used by police, fire or emergency medical services
You should send on 2182 kHz as it is a designated distress frequency
What ever frequency that has the best chance of communicating the distress message
Which of the following as per IAMSAR is responsible for promoting the efficient organizing Search and Rescue Service ?
Ship Earth Station (SES)
Coordination Surfaces Search (CSS)
Rescue Coordination Center (RCC)
On-Scene Commander (OSC)
What are the conditions, under GMDSS, whereby a ship is NOT allowed to depart from any port ?
The vessel is not capable of performing all required distress and safety functions
The vessel has temporary waiver of its license and safety certificate
The vessel is carrying more than the required number of qualified GMDSS radio operatos
The vessel is not carrying a GMDSS radio maintainer, but has provided for shore side maintenance
What type of signal you must transmit to locate your position using your mobile unit ?
Homing Signal
Radio directional signal
Radio beacon signal
Alerting signal
Which of the following action should be taken once the vessel is berthed and will not leave port again for several week ?
The GMDSS operator must notify the NCS that the vessel will be offline and wait for the NCS to acknowledge with a confirmation number that must be logged
The Inmarsat C system can be powered down without taking additional steps once the GMDSS operator has ensured that all incoming safety
The GMDSS operator may log off the Inmarsat C system and turn the power off, unless the vessel decides to leave the unit on during the port stay
The GMDSS operator must transmit an all ship alert to notify vessel within the satellite footprint that the vessel will be offline
What is the effect of the temperature to the specific gravity of lead acid batteries ?
The temperature has no effect on specific gravity reading
A lower temperature results in a lower specific gravity reading
A higher temperature results in a lower specific gravity reading
A higher temperature results in a higher specific gravity
In using a GMDSS communication equipment, what is the most common practice that a radio operator must learn ?
Monitor the channel before transmitting
Transmit without identification
Send test transmission to another ship station using 2187.5 kHz
Silence the alarm to prevent noise
When listening to the transmission of a very close station, what step must be observed to prevent the strong signal from "smothering" the receiver ?
Adjust the volume control
Use a headset and adjust the squelch
Lower power output
Switch off speaker and use headset
You noticed interference on one or two station while watching TV onboard, what is most likely cause of interference ?
De-ionization of the ionosphere near your area
The TV receiver front-end overboard
To much low pass filtering on the transmitter
Harmonic transmission from your transmitter
What would be an indication of a malfunction on a GMDSS equipment station with a 24 VDC battery system ?
After testing the station battery power the ammeter reading indicates a high rate of charge that then declines
An indication on a meter or on the terminal of low receiver signal strength
A constant 30 volt reading on the GMDSS console
After testing the battery power a voltmeter reading of 30 volts for brief period followed by 26 volt reading
What is the usual effect of the ionosphere storms ?
It causes a fade-out of skywaves signal
It increases the maximum usable frequency
It prevent communication by groundwave
It produce extreme weather changes
A storm hits your ship, causing your MF-HF whip antenna to shatter. What would you do if you need to reclaim MF-HF frequencies ?
Rig a horizontal dipole antenna 40 feet long.
Rig a wire antenna approximately 35-75 feet long per the equipment instruction manual
Rig a wire antenna 10-15 ft long from the antenna tuner to the highest vertical support
Rig a long wire antenna at least 200 feet long
What is your responsibility under a GMDSS equip vessel in a distress situation ?
If you are close to a vessel in distress regardless of your vessel size you much render assistance
If your ship is over 300GT you can be required to render assistance if such assistance will not effect your schedule
In distress situation you must be able to perform communications functions that are essential for the safety of your ship itself and of other ship
If outside of service areas you may be required to render assistance in Distress situation
What is the signal you must transmit to locate you position using your mobile unit on board a survival craft ?
Radio directional signal
Radio beacon signal
Alerting signal
Homing signal
In which Sea Areas the radio coverage of VHF coast stations in which continuous alerting by Digital Selective Calling (DSC) is available ?
Sea Area A1
In all the base area is available
Sea Area A2
Sea Area A3
In proper setting up and safe operation of radio equipment, what publication you should consult ?
FCC rules and regulation
ITU Manual
The manufacturer's instruction manual
Code of Federal Regulations
When your vessel is on fire, what is the rapid and successful reporting of a distress incident to a unit which can be provided of coordinate assistance ?
Public Alerting
Urgency alerting
Distress alerting
Safety alerting
When you are listening to the transmission of a very close station, what step you must observe to prevent the strong signal from smothering the receiver ?
Switch off the speaker and use headset
Adjust squenlch
Adjust volume control
Lower the power output
Why it is necessary to send distress alert when you have fire onboard ?
The distress alert message is necessary so that other vessel can approach you and give assistance
The distress alert message is necessary to alert other vessel and authorities
The distress alert message is not necessary if you do not need immediate assistance
The distress alert message is not necessary because your situation is still on uncertainty phase
Which of the following indicates proper operation of a SSB transmitter rated at 60 watts PEP output in J3E mode ?
In communication the power meter can be seen fluctuating regularly from zero to the 60 watts relative output reading
A steady indication of transmitter energy on RF power meter with no fluctuations when speaking into the microphone
In SSB (J3E) voice mode, with the transmitter keyed but without speaking into the microphone no power output is indicated
In SSB (J3E) mode, speaking into the microphone causes no power meter fluctuate on above the 60 watts reading
What is the term which refers to the supply of electrical required to supply radio installations on every ship for the purpose of conducting distress and safety radio Communications in the event of failure of the ship's main and emergency sources of electrical power ?
Ship's standby generator
Reserve source of energy
Emergency power
Ship's emergency diesel generator
While underway, how frequently is the DSC controller required to be tested ?
Once a day
Once a month
Twice a week
Once a week
What should you do if you test radio equipment and it turns out to be defective ?
Switch-off the equipment and re-start and test again
Stop testing and try testing next time on your duty
Consult the equipment manual and continue testing
The Master must be notified as soon as possible
In case of power breakdown a reserve power source must be able to all radio equipment plus as emergency light system for how long ?
5 hours
4 hours
7 hours
6 hours
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