NBTC ONE STOP SERVICE

แบบฝึกหัดพนักงานวิทยุคมนาคมประเภทจำกัดเขตเดินเรือทะเล(ROC)

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แบบฝึกหัดพนักงานวิทยุคมนาคมประเภททั่วไปประจำเรือ (GOC)

หมวดที่ 1. General Information and System Overview และ Principles of Communications

หมวดที่ 2. F.C.C. Rules & Regulations และ DSC & Alpha-Numeric ID

หมวดที่ 3. Distress, Urgency & Safety Communications และ Section-F: Survival Craft Equip & S.A.R

หมวดที่ 4. VHF-DSC Equipment & Communications และ Maritime Safety Information (M.S.I.)

หมวดที่ 5. Inmarsat Equip. & Communications และ MF-HF Equip. and Communications

แบบฝึกหัดพนักงานวิทยุคมนาคมประเภทจำกัดเขตเดินเรือทะเล (ROC)

หมวดที่ 1. General Information and System Overview และ F.C.C. Rules & Regulations

หมวดที่ 2. DSC & Alpha-Numeric ID Systems และ Distress, Urgency & Safety Communication

หมวดที่ 3. Survival Craft Equip & S.A.R, Maritime Safety Information (M.S.I.) และ VHF-DSC Equipment & Communication

เฉลย

ทดสอบอีกครั้ง

คำถามที่ 1/50

90:00 นาที

How many digits are in the MID (Maritime Identification Digits)?

A. 3

B. 7

C. 9

D. 10

คำถามที่ 2/50

90:00 นาที

Which of the following numbers indicates a U.S. flag ship station?

A. 036627934

B. 243537672

C. 338426791

D. 003382315

คำถามที่ 3/50

90:00 นาที

Which of the following MMSI numbers indicates a U.S. flag ship station?

A. 430326890

B. 033609991

C. 303236824

D. 257326819

คำถามที่ 4/50

90:00 นาที

Which of the following numbers indicates a ship station MMSI?

A. 003372694

B. 030356328

C. 3384672

D. 623944326

คำถามที่ 5/50

90:00 นาที

A valid MMSI number for a DSC call to a specific group of vessels is:

A. 003664523

B. 338462941

C. 003036483

D. 030327931

คำถามที่ 6/50

90:00 นาที

A MMSI 030346239 indicates what?

A. Group MMSI

B. Inmarsat-C I.D. number

C. Coast station

D. Ship station

คำถามที่ 7/50

90:00 นาที

Which of the following statements concerning MMSI is true?

A. Coast station MMSI numbers have 9 digits starting with 4.

B. All MMSI numbers are 9 digits and contain an MID.

C. Ship station MMSI numbers can be 7 digits or 9 digits depending on the Inmarsat terminal.

D. Group MMSI numbers must begin with 2 zeros.

คำถามที่ 8/50

90:00 นาที

A VHF “Distress Hot Key” alert will always include what information?

A. The nature of Distress and vessel position.

B. The vessel’s current position, course and speed from the GPS.

C. The vessel’s programmed MMSI number and code for Distress priority.

D. The follow-on frequency required for Distress voice communications.

คำถามที่ 9/50

90:00 นาที

A "Distress Hot Key" VHF DSC Distress alert:

A. Always goes out on the DSC frequency of Ch-70 to alert other stations.

B. Must go out on Ch-16 and Ch-70 to indicate “MAYDAY” traffic will follow.

C. Must go out on Ch-16 to alert the nearest vessels and coast stations of imminent “MAYDAY” traffic.

D. May go out on Ch-70 or Ch-16 depending on the manufacturer.

คำถามที่ 10/50

90:00 นาที

Which statement is true regarding vessel position when sending a “Distress Hot Key” alert?

A. The operator must choose to include the position.

B. The vessel’s position will always be correct if taken from the connected GPS.

C. A connected GPS is always required to ensure the Distress position is accurate.

D. The position will either be taken from the connected GPS or the updated manual position.

คำถามที่ 11/50

90:00 นาที

A “Distress Hot Key” alert will always include what information?

A. Distress priority, vessel’s position if available and the vessel’s MMSI number.

B. The vessel’s current position, course and speed from the GPS.

C. The vessel’s MMSI number and category of Distress.

D. Distress priority, frequency for voice Distress communications and vessel position.

คำถามที่ 12/50

90:00 นาที

Which of the following statements on DSC acknowledgement and relay of DSC Distress alerts is true?

A. Operators cannot initiate acknowledgements or relays.

B. Most equipment was designed to allow for DSC acknowledgements and ALL SHIPS DSC relays but this should only be done per current regulations.

C. The equipment was designed to allow for DSC acknowledgements and relays and the operator should follow the software menu structure accordingly.

D. DSC acknowledgements and relays are automatically transmitted by the unit to ensure the RCC receives the Distress.

คำถามที่ 13/50

90:00 นาที

A DSC Distress alert is received. What action should be taken?

A. Transmit a DSC acknowledgement.

B. Call the nearest Coast Guard Station.

C. No action is necessary.

D. Advise the Master and monitor Ch-16.

คำถามที่ 14/50

90:00 นาที

What is the quickest method of transmitting a DSC Distress alert?

A. Press the “Distress Hot Key”.

B. Make a “MAYDAY” call on Ch-70.

C. Make a “MAYDAY” call on Ch-16.

D. Select “Distress” priority from the menu.

คำถามที่ 15/50

90:00 นาที

DSC relays of Distress alerts by vessels:

A. Should be done for all Distress alerts received aboard the ship.

B. Should be avoided; unless an acknowledgement has not been heard.

C. Should be transmitted to all ships involved in Distress traffic.

D. Are the best means to provide for a retransmission of Distress communications.

คำถามที่ 16/50

90:00 นาที

If a GMDSS Radio Operator initiates a DSC Distress transmission but does not insert a message, what happens?

A. The transmission is aborted and an alarm sounds to indicate this data must be provided by the operator.

B. The transmission will be made with "default" information provided automatically.

C. The transmission is not initiated and "ERROR" is indicated on the display readout.

D. The receiving station will poll the DSC unit of the vessel in Distress to download the necessary information.

คำถามที่ 17/50

90:00 นาที

Repetition of a DSC Distress call is normally automatic if not acknowledged after a delay of:

A. 2 - 5 minutes

B. 10-15 minutes

C. 3.5 - 4.5 minutes

D. 1 - 2 minutes

คำถามที่ 18/50

90:00 นาที

A VHF-DSC Distress alert will always be transmitted on what channel?

A. Ch-16

B. Ch-22A

C. Ch-6

D. Ch-70

คำถามที่ 19/50

90:00 นาที

Why should you always follow on with a voice transmission after sending a DSC Distress alert?

A. A voice follow on transmission is always necessary in a genuine Distress.

B. To provide more information than is contained in the DSC message.

C. To confirm for coast stations and other mariners that the Distress is genuine.

D. All of these answers are correct.

คำถามที่ 20/50

90:00 นาที

You receive a VHF-DSC Distress alert. What Channel should you monitor for further information?

A. Ch-16

B. Ch-06

C. Ch-22A

D. Ch-70

คำถามที่ 21/50

90:00 นาที

What is the proper format for a Distress follow on voice transmission? (3x is three times),

A. All Ships 3x, this is Ship's Name/Call Sign 3x, Ship's position, nature of distress and assistance requested.

B. Mayday 3x, this is Ship's Name/Call Sign 3x, Ship's position, nature of distress and assistance requested.

C. Mayday 3x, this is Ship's Name/Call Sign once, Ship's position, nature of distress and assistance requested.

D. All Stations 3x, this is Ship's Name/Call Sign 3x, Ship's position, nature of distress and assistance requested.

คำถามที่ 22/50

90:00 นาที

What information should be included in a Distress follow on voice transmission after a DSC Alert?

A. Ship's Name and Call Sign, MMSI number, DSC frequency used and any other information that might facilitate rescue.

B. Ship's Name and Call Sign, MMSI number & position, the nature of distress and assistance requested.

C. Ship's position, Ship’s IMN, the nature of distress and assistance requested.

D. Ship’s Name and Call sign, repeat IMN, provide any other information that might facilitate rescue.

คำถามที่ 23/50

90:00 นาที

What is meant by the acronym “ECC" in a DSC message?

A. Error Check Character

B. Every Cipher Counted

C. Error Cannot Confirm

D. Even Characters Counted

คำถามที่ 24/50

90:00 นาที

What action should be taken on receipt of a VHF Distress alert?

A. Read the display screen and/or printout and call the Master to verify if the Distress is genuine.

B. Silence the alarm, examine the display screen and acknowledge the DSC alert via DSC.

C. Silence the alarm and listen for any follow on voice transmission on Ch-70.

D. Silence the alarm and set up watch on Ch-16 to determine if the Distress is genuine.

คำถามที่ 25/50

90:00 นาที

What precautions should be taken when viewing an incoming DSC Distress alert message?

A. Be careful not to activate a DSC acknowledgement or relay.

B. If the message is not clear make a DSC call to all ships requesting clarification.

C. No precautions are necessary -- the unit will auto-acknowledge an incoming DSC Distress alert.

D. If there are errors in the call the unit didn’t auto-acknowledge via DSC and the watch officer must do so instead.

คำถามที่ 26/50

90:00 นาที

Your ship received a Distress relay from a coast station on DSC VHF channel 70. What action should the watch officer take?

A. Retransmit the DSC call on Ch-70 to other vessels in the vicinity.

B. Monitor Ch-16 to determine if there are any genuine Distress communications.

C. Monitor Ch-06 to determine if there are any genuine Distress communications.

D. Transmit a voice “Mayday Relay” call on Ch-13.

คำถามที่ 27/50

90:00 นาที

Under what condition would you not relay a DSC Distress alert?

A. If the mobile unit in Distress is incapable of further Distress alert communications.

B. If no Coast Station/Mobile Unit acknowledgement of the alert is observed.

C. A coast station DSC acknowledgment of the original Distress alert was received by your vessel.

D. No distress traffic has been heard and the DSC alert is unacknowledged via DSC.

คำถามที่ 28/50

90:00 นาที

The relay of DSC Distress alerts

A. Was not originally an intended function of the GMDSS system but now is the preferred method to notify an RCC.

B. Remains the preferred method for passing Distress message traffic to an RCC or Coast Station.

C. Should always be done immediately to ensure a Coast Station receives the DSC Distress Alert.

D. Can quickly overburden the GMDSS systems in the vicinity with improperly transmitted or inappropriately relayed DSC calls.

คำถามที่ 29/50

90:00 นาที

You are in voice communication on Ch-16 with a vessel in Distress that advises you they are unable to contact a Coast Station. What action would you take?

A. Send a DSC Distress Relay transmission on Ch-16.

B. Attempt to contact a Coast Station using voice on Ch-16 with a Mayday Relay.

C. Make an all ships call with Urgency priority.

D. Call the Coast Station on Ch-70 with Distress priority giving the other vessel’s position.

คำถามที่ 30/50

90:00 นาที

What action is not applicable in preventing transmissions of false Distress alerts?

A. Proper watch officer instruction and training.

B. Disabling the unit’s ability to perform DSC Relays & acknowledgments.

C. Ensure that the protective cover over the “Distress Hot Key” is secure.

D. Ensure that all officers read the operating manuals and are familiar with the menus.

คำถามที่ 31/50

90:00 นาที

The EPIRB on the bridge wing is observed with the strobe light flashing and the control switch in the “ON” position. What action(s) should be taken?

A. Disabling the EPIRB is all that is necessary.

B. Contact the nearest USCG Coast Station and request that they send the alert reset signal.

C. Contact the nearest coast station or RCC to cancel the distress alert and subsequently disable the EPIRB.

D. Disable the EPIRB and wait for the USCG to advise that the transmission has stopped.

คำถามที่ 32/50

90:00 นาที

You have been monitoring your 3-cm radar screen and a series of 12 concentric circles suddenly appears centered on the screen. What is the most likely cause of this situation?

A. There is a survival craft within 3 nm distance.

B. There is a fault in the radar.

C. Your own vessel’s SART has been activated.

D. Your own vessel’s EPIRB homing beacon has been activated.

คำถามที่ 33/50

90:00 นาที

The EPIRB on the bridge wing is observed with the strobe light flashing and the control switch in the “OFF” position. What action should be taken?

A. Place the control switch in the "OFF” position.

B. No action is needed – the strobe light indicates the automatic monthly self test is in progress.

C. Wait for the USCG or NOAA to confirm that the unit is actually transmitting.

D. Assume the unit is transmitting and follow the recommended procedures to properly cancel a false distress alert being broadcast from an EPIRB.

คำถามที่ 34/50

90:00 นาที

When can routine communications be resumed when radio silence has been imposed?

A. After determining that the frequency or channel appears to be no longer in use.

B. After determining that geographic distance from the Distress situation will prohibit any other signal from interfering with emergency communications.

C. If, in the master's opinion, communications on that frequency will interfere with emergency communications.

D. Routine communications can resume after the Rescue Coordination Center transmits a message on the frequency or channel being used for emergency communications stating that such traffic has concluded.

คำถามที่ 35/50

90:00 นาที

What is meant by the term “Seelonce Mayday"?

A. Stations not directly involved with the on-going Distress communications may not transmit on the Distress frequency or channel.

B. Stations remaining off the air to safeguard proprietary information.

C. Two three-minute silent periods, at 15 and 45 minutes after the hour, that provide a transmitting "window" for distressed vessels to transmit Distress alerts using J3E.

D. Communications on a Distress frequency or channel is banned for 24 hours following the cessation of the Distress traffic.

คำถามที่ 36/50

90:00 นาที

How is "radio silence" imposed?

A. By the Land Earth Station (LES) controlling the Distress communications on that frequency.

B. By the On Scene Coordinator (OSC) or the RCC chosen by the SAR Mission Coordinator.

C. By the nearest Public Correspondence Coast Station.

D. By the vessel first responding to the Distress call.

คำถามที่ 37/50

90:00 นาที

What is the reason for imposing radio silence?

A. To keep a clear channel open for Safety broadcasts.

B. To prevent interference to Distress communications.

C. To allow individual vessels to carry out direct communications.

D. To listen periodically for other vessels sending Distress alerts on Ch-70.

คำถามที่ 38/50

90:00 นาที

How are normal working conditions restored after radio silence has been imposed?

A. All of these answers are correct.

B. The Land Earth Station (LES) that imposed the radio silence must transmit a voice message on the Distress frequency stating "SILENCE FINI".

C. The Rescue Coordination Center (RCC) that imposed the radio silence must transmit a voice message on the Distress frequency stating "SEELONCE FEENEE".

D. The Public Correspondence Station (PCS) that imposed the radio silence must transmit a voice message on the Distress frequency stating "SILENCE FINI".

คำถามที่ 39/50

90:00 นาที

Which of the following situations would normally use the Urgency priority?

A. A crewmember falling over the side.

B. A serious medical situation involving a crewmember with potential loss of life.

C. A cargo shift or weather situation considered to be of greater hazard than would justify a Safety priority designation.

D. An important meteorological warning concerning hazardous weather.

คำถามที่ 40/50

90:00 นาที

Which of the following situations would not properly use the Urgency priority?

A. Treatment of a crewmember breaking a leg in a cargo hold.

B. Leaking oil from a minor tank fracture requiring a mandatory pollution report.

C. An unexpected deviation in the forecast track line of a typhoon.

D. Abandoning the vessel just before sinking.

คำถามที่ 41/50

90:00 นาที

The Urgency Priority should be used for:

A. Messages concerning the Safety of Life At Sea (SOLAS).

B. Messages detailing important navigational warnings.

C. Messages concerning On-scene communications.

D. Messages containing information concerning the Safety of a mobile unit or person.

คำถามที่ 42/50

90:00 นาที

If the Watch Officer hears "PAN PAN" spoken 3 times it means:

A. None of these answers is correct.

B. A navigation or important meteorological warning should follow.

C. The station is preparing to transmit a Safety message possibly concerning the safety of a mobile unit or person.

D. A mobile unit is in need of immediate assistance.

คำถามที่ 43/50

90:00 นาที

Which of the following situations would normally use the Voice designation "Securite"?

A. Messages concerning the Safety of Life At Sea (SOLAS).

B. Messages detailing important navigational warnings.

C. Messages containing information concerning the Safety of a mobile unit or person.

D. Messages concerning On-scene communications.

คำถามที่ 44/50

90:00 นาที

Which of the following situations would normally use the Safety priority?

A. A serious medical situation involving a crewmember.

B. An unanticipated warning related to piracy or terrorism.

C. Grounding in a way that could lead to imminent danger to the ship’s crew.

D. Important navigational or meteorological warnings.

คำถามที่ 45/50

90:00 นาที

The Radiotelephone Safety signal is:

A. "Securite" repeated 3 times

B. "Safety Safety Safety"

C. "Pan Pan" repeated 3 times

D. "Securite Securite" repeated 3 times

คำถามที่ 46/50

90:00 นาที

Which of the following situations would normally use the Safety priority?

A. A serious medical situation involving a crewmember.

B. A scenario concerning an important navigational or meteorological warning.

C. A crewmember falling over the side.

D. Important company communications involving weather routing.

คำถามที่ 47/50

90:00 นาที

If your vessel has suffered a casualty severe enough to disable both ship’s power and the GMDSS console RSE you should:

A. Activate the EPIRB and/or use the SCT to make a “Mayday” call on Ch-16.

B. Use UHF Transceivers to contact other vessels.

C. Activate the EPIRB and/or use the SCT to make a “Mayday” call on Ch-70.

D. Make a “Mayday” call on Ch-70 and Ch-06 using the Survival Craft Transceiver.

คำถามที่ 48/50

90:00 นาที

DSC is used primarily to:

A. Receive weather warnings, navigational notices and other Maritime Safety Information.

B. Transmit and receive Distress, Urgency and Safety alerts and routine calls to and from other ships and coast radio stations.

C. Provide routine communications with the ship owner.

D. Report ship's position to search-and-rescue authorities via satellite.

คำถามที่ 49/50

90:00 นาที

What action(s) should be taken when abandoning ship?

A. Send a VHF-DSC Distress alert on Ch-16 before going to the boats.

B. Activate the EPIRB and leave it secured to the mounting bracket.

C. Take EPIRB, SART and SCT units to the survival craft and use as circumstances dictate.

D. Once in the survival craft – activate the EPIRB and send a VHF-DSC Distress alert on Ch-16

คำถามที่ 50/50

90:00 นาที

What is the best method of determining whether a Distress situation is genuine?

A. Check your 3-cm radar for a SART signal from the Distress vessel.

B. Monitor the 406 MHz EPIRB signal to locate the vessel in Distress.

C. Check the NAVTEX for U.S.C.G. confirmation of the Distress from the RCC.

D. Monitor the follow on frequency for actual voice Distress communications.

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