NBTC ONE STOP SERVICE

แบบฝึกหัดพนักงานวิทยุคมนาคมประเภททั่วไปประจำเรือ(GOC)

แบบฝึกหัดพนักงานวิทยุสมัครเล่น

ขั้นต้น

ขั้นกลาง

ขั้นสูง

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

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

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

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

คำถามที่ 2/50

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. 1 - 2 minutes

D. 3.5 - 4.5 minutes

คำถามที่ 3/50

90:00 นาที

Which statement regarding an MF/HF DSC Distress call is true:

A. Follow on communications should be presumed to take place on the SITOR (NBDP) frequency associated with the specific DSC frequency used.

B. Follow on communications should be presumed to take place on the voice frequency associated with the specific DSC frequency used.

C. An alternate emission and frequency may be specified for follow-up communications by the vessel in the original Distress alert.

D. Both the nature of Distress and the alternate emission and frequency must be specified for follow-up communications in the original Distress alert.

คำถามที่ 4/50

90:00 นาที

If a MF-DSC Distress alert is transmitted what frequency is used for follow-on voice transmission?

A. 2182.0 kHz

B. 2760.0 kHz

C. 2187.5 kHz

D. 2174.5 kHz

คำถามที่ 5/50

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 once, Ship's position, nature of distress and assistance requested.

C. Mayday 3x, this is Ship's Name/Call Sign 3x, 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 6/50

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

C. Ship's Name and Call Sign, MMSI number & position, 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 7/50

90:00 นาที

What information is not vital in a Distress follow on voice transmission after a DSC Alert?

A. Ship's position, nature of distress and assistance requested.

B. Ship's Name, Call Sign and MMSI number.

C. Physical description of the vessel and number of POB.

D. Company emergency contact information.

คำถามที่ 8/50

90:00 นาที

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

A. Error Of Sequence

B. End Of Signals

C. Equal Operating Signals

D. End Of Sequence

คำถามที่ 9/50

90:00 นาที

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

A. Every Cipher Counted

B. Error Check Character

C. Error Cannot Confirm

D. Even Characters Counted

คำถามที่ 10/50

90:00 นาที

What action should be taken if a Distress alert is received on the 12 MHz DSC frequency?

A. Use DSC to acknowledge/relay the alert using the 12 MHz DSC frequency.

B. Do nothing. Ship is too far away to render assistance

C. Set the transceiver to 12290.0 kHz simplex J3E emission.

D. Set the transceiver to 12520.0 kHz simplex F1B/J2B emission.

คำถามที่ 11/50

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

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

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

คำถามที่ 12/50

90:00 นาที

The relay of DSC Distress alerts:

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

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

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

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

คำถามที่ 13/50

90:00 นาที

Transmission of a Distress alert by a station on behalf of another vessel actually in Distress should not occur:

A. When the mobile unit actually in Distress is not itself in a position to transmit the Distress alert.

B. When the Master or responsible person on the mobile unit not in Distress so decides.

C. When the responsible person at the Coast Station determines further help is necessary.

D. When communications between the Distress vessel and a Coast station are already in progress.

คำถามที่ 14/50

90:00 นาที

What action should you take after sending a false Distress alert on MF?

A. Send another DSC alert on 2187.5 kHz. and follow on with voice on 2187.5 kHz.

B. No action is necessary.

C. Make a voice announcement to cancel the alert on 2182.0 kHz.

D. Send a DSC alert on all 7 DSC frequencies and follow on voice on 2174.5 kHz.

คำถามที่ 15/50

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

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

คำถามที่ 16/50

90:00 นาที

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

A. A collision with the ship taking on water.

B. A serious medical situation involving a crewmember.

C. Important company communications related to an itinerary change.

D. Scenarios concerning the Safety of navigation or important meteorological warnings.

คำถามที่ 17/50

90:00 นาที

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

A. Treatment of a crewmember with a broken leg that is not life-threatening.

B. Treatment of a crewmember with a serious cardiac emergency.

C. A fire in the generator flat/spaces.

D. Loss of 5 containers with lashing gear over the side.

คำถามที่ 18/50

90:00 นาที

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

A. Important navigational or meteorological warnings.

B. A serious medical situation involving a crewmember.

C. An unanticipated warning related to piracy or terrorism.

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

คำถามที่ 19/50

90:00 นาที

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

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

B. A serious medical situation involving a crewmember.

C. A crewmember falling over the side.

D. Important company communications involving weather routing.

คำถามที่ 20/50

90:00 นาที

Which of the following frequencies is designated for On-scene Distress and Safety communications?

A. 4209.5 kHz

B. 2174.5 kHz

C. 518.0 kHz

D. 490.0 kHz

คำถามที่ 21/50

90:00 นาที

Which channel is designated for GMDSS Digital Selective Calling?

A. Ch-06

B. Ch-16

C. Ch-70

D. Ch-83

คำถามที่ 22/50

90:00 นาที

How many HF frequencies are available for DSC Distress related calls?

A. Five

B. Four

C. Two

D. One

คำถามที่ 23/50

90:00 นาที

How many frequencies are available under GMDSS for DSC Distress-related calls?

A. Six

B. Seven

C. Four

D. Five

คำถามที่ 24/50

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 25/50

90:00 นาที

GMDSS vessels equipped for Sea Areas A2, A3 or A4 must maintain a continuous DSC watch on 2187.5 kHz.

A. Only in areas beyond Inmarsat coverage.

B. Only outside of areas covered by VHF-DSC.

C. At all times when underway.

D. When directed to do so by a cognizant rescue authority.

คำถามที่ 26/50

90:00 นาที

How can a SART's detection and effective range be maximized?

A. The SART should be held or mounted as high as possible and in a vertical position.

B. The SART should be placed in water immediately so it will begin transmitting.

C. Switch the SART into the "high" power position.

D. If possible, the SART should be mounted horizontally so that its signal matches that of the searching radar signal.

คำถามที่ 27/50

90:00 นาที

Which statement is NOT true regarding the SART?

A. Responds to interrogations by a vessel's X-Band radar and transmits a signal.

B. This is a 6 GHz transponder capable of being received by a vessel's X-band navigational radar system.

C. This is a 9 GHz transponder capable of being received by a vessel's X-band navigational radar system.

D. Transmits a distinctive 12-blip signal for easy recognition.

คำถามที่ 28/50

90:00 นาที

A SART's signal cannot be detected:

A. In poor visibility, or at night.

B. In heavy seas.

C. By a search vessel's 10 cm Radar.

D. By a search vessel's 3 cm Radar.

คำถามที่ 29/50

90:00 นาที

What signal is detected as originating from an AIS SART and how is the signal displayed?

A. An AIS SART signal is shown on any AIS receiver as a special MMSI-like coded symbol.

B. The 3-cm radar reflections are converted to AIS signals and displayed on ECDIS/ARPA screens.

C. An AIS SART transmits on AIS frequencies and the signals are converted to 3-cm radar targets for display on 3-cm radars.

D. An AIS SART transmits on 9 GHz so that a 3-cm radar can display the signals.

คำถามที่ 30/50

90:00 นาที

What is not an advantage of an AIS SART signal when compared to a radar-based SART signal?

A. The AIS SART can be detected much farther away than radar SART models.

B. Not every AIS transmission needs to be received to achieve an accurate presentation of the location.

C. The AIS SART position has GPS accuracy and transmits on AIS VHF frequencies.

D. AIS SART units may be easier to find in poor radar target conditions.

คำถามที่ 31/50

90:00 นาที

Why is it important to limit the duration of testing a SART?

A. Excessive testing causes "burn in" on the vessel's radar display.

B. Testing in port or even at sea may cause interference to other radars or a test signal may be misinterpreted as a genuine Distress situation.

C. To prevent overheating, a SART requires sufficient ventilation that is significantly reduced when the SART is being tested.

D. If another SART is testing at the same time, the two signals will cause damage to the unit that transmitted them.

คำถามที่ 32/50

90:00 นาที

Why should functional testing of a SART be minimized?

A. Potential interference with safe navigation, notifying other vessels of an actual Distress and minimize power consumption.

B. Minimize power consumption of the battery and only test at sea to reduce potential interference or confusion.

C. Possibility of misinterpretation by other vessels as a Distress situation and only test in port to prevent potential interference with safe navigation or at-sea vessels.

D. Potential interference with safe navigation, possible misinterpretation of an actual Distress, minimizes draining the battery.

คำถามที่ 33/50

90:00 นาที

Which is NOT a valid maintenance and testing function for a SART?

A. Operational test with several vessels to determine effective transmitting range.

B. Inspection of container for apparent damage.

C. Inspect battery expiration date and the lanyard condition.

D. Brief operational test utilizing own ship's radar.

คำถามที่ 34/50

90:00 นาที

Which of the following statements concerning COSPAS-SARSAT is false?

A. EPIRBs, ELTs, and PLBs use the system primarily for Distress alerting.

B. These satellites monitor 406 MHz for EPIRB signals.

C. After initiating a call request and selecting the LES, these satellites may be used for commercial messages.

D. These satellites use Doppler shift measurement to determine the location of the beacons.

คำถามที่ 35/50

90:00 นาที

What statement is true regarding 406 MHz EPIRB transmissions?

A. Transmits a unique hexadecimal identification number.

B. Allows immediate voice communications with the RCC.

C. Coding permits the SAR authorities to know if manually or automatically activated.

D. GMDSS Radio Operator programs an I.D. into the SART immediately prior to activation.

คำถามที่ 36/50

90:00 นาที

Which of the following statements concerning EPIRBs is false?

A. The COSPAS-SARSAT system may take a full hour or more to provide an alert.

B. The Inmarsat system provides worldwide coverage for Distress alerts.

C. The GOES weather satellites are in a geostationary orbit.

D. 406 MHz EPIRB units may be equipped with GPS receivers.

คำถามที่ 37/50

90:00 นาที

What may be used as a homing signal by the search and rescue vessels in the immediate vicinity of the ship in Distress?

A. Flare gun

B. Strobe Light

C. 406 MHz signal from a satellite EPIRB.

D. A 121.5 MHz emergency transmitter in a satellite EPIRB.

คำถามที่ 38/50

90:00 นาที

What is an example of a locating signal?

A. SSB phone traffic

B. Ship to shore transmissions

C. Loran C

D. A float-free EPIRB

คำถามที่ 39/50

90:00 นาที

Equipment for radiotelephony use in survival craft stations under GMDSS must have what capability?

A. Operation on 457.525 MHz.

B. Operation on Ch-16.

C. Operation on 121.5 MHz.

D. Operation on Ch-70.

คำถามที่ 40/50

90:00 นาที

Equipment for radiotelephony use in survival craft stations under GMDSS must have what characteristics?

A. Permanently-affixed antenna, watertight, power 1W or 25W.

B. Watertight, power a minimum of 1W, operation on CH-16, Ch-13 & Ch-70.

C. Operation on Ch-16, watertight, permanently-affixed antenna.

D. Operation on Ch-16, Ch-13 & Ch-70, power 1W, permanently-affixed antenna.

คำถามที่ 41/50

90:00 นาที

Which statement is NOT true regarding the requirements of survival craft portable two-way VHF radiotelephone equipment?

A. Watertight to a depth of 1 meter for 5 minutes.

B. Operates simplex on Ch-70 and at least one other channel.

C. Effective radiated power should be a minimum of 0.25 Watts.

D. The antenna is fixed and non-removable.

คำถามที่ 42/50

90:00 นาที

Which of the following channels is designated as the VHF follow-on communications channel and is required in all portable survival craft equipment?

A. Ch-16

B. Ch-6

C. Ch-13

D. Ch-70

คำถามที่ 43/50

90:00 นาที

Which of the following frequencies have NOT been designated for GMDSS “On-scene” or SAR communications?

A. VHF Ch-16

B. MF radiotelephony on 2182.0 kHz

C. SITOR (NBDP) on 2182.0 kHz

D. HF radiotelephony on 4125.0 kHz

คำถามที่ 44/50

90:00 นาที

“On-scene" communications would best be represented by?

A. Using Inmarsat-C "hot-key" function

B. Sending DSC alert on VHF Ch-70

C. SITOR (NBDP) on 2174.5 kHz

D. SITOR (NBDP) on 4125.0 kHz

คำถามที่ 45/50

90:00 นาที

Which statement is not true regarding the COSPAS-SARSAT system?

A. The position of the EPRIB is always transmitted in the outgoing transmission (unless the unit is a GPIRB).

B. Signals received by low altitude, near-polar orbiting satellites are relayed to a ground receiving station (LUT).

C. Doppler shift is used to locate the position of the EPIRB.

D. EPIRBs are satellite beacons used as alerting & homing devices.

คำถามที่ 46/50

90:00 นาที

Which statement is NOT true regarding the COSPAS-SARSAT system?

A. EPIRBs are satellite beacons used as alerting/locating devices.

B. May be used to transmit public correspondence.

C. Locates Distress beacons transmitting on 406 MHz.

D. Doppler shift is used to locate the beacons.

คำถามที่ 47/50

90:00 นาที

What information is transmitted by a 406 MHz EPIRB alert?

A. Vessel position and nature of Distress.

B. A unique Hexadecimal I.D. number.

C. Vessel name and identification.

D. Vessel MMSI number and position.

คำถามที่ 48/50

90:00 นาที

What information should be contained in a detailed Distress message that was not transmitted by an initial Distress “hot-key” alert?

A. Vessel position, course & speed and the nature of Distress.

B. The distress vessel’s IMN and position at the time of alert.

C. Vessel name & call sign, POB and all potential means to communicate with the vessel.

D. Vessel name & call sign, distress vessel’s IMN & vessel position.

คำถามที่ 49/50

90:00 นาที

Which GMDSS equipment is best suited to simultaneous long-range communications with an RCC/coast station and OSC vessels or SAR aircraft?

A. MF-HF SITOR (NBDP) transmitters using telex follow on frequencies.

B. Inmarsat Signals routed via the RCC to the SAR vessels & aircraft under their control.

C. VHF transmitters to reach SAR aircraft and OSC vessels as well as the RCC/coast station.

D. MF-HF SSB transmitters using voice follow-on frequencies.

คำถามที่ 50/50

90:00 นาที

Which statement is true regarding Inmarsat “hot-key” Distress Alerts?

A. The LES programmed by the watch officers into the Distress Alert Update menu determines which RCC will receive your initial Distress Alert.

B. The vessel’s position is checked against the SAR jurisdictions and the proper LES updated as the vessel changes NAVAREAS.

C. The GPS position updates the Distress Alert Update menu to the correct LES choice to ensure proper communications with an RCC.

D. The Distress Alert defaults are set correctly by the manufacturer and then automatically updated.

คุณยังตอบคำถามไม่ครบ : 50 ข้อ จาก 50 ข้อ

(คลิกที่หมายเลขข้อที่ต้องการ เพื่อตอบคำถาม)

เข้าสู่ระบบ

เฉลย