NBTC ONE STOP SERVICE

แบบฝึกหัดพนักงานวิทยุคมนาคมประเภททั่วไปประจำเรือ(GOC)

แบบฝึกหัดพนักงานวิทยุสมัครเล่น

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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

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ทดสอบอีกครั้ง

คำถามที่ 1/50

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 2/50

90:00 นาที

For a MF/HF DSC Distress call which statement is false?

A. It always requests J3E Voice follow-on communications so other vessels can hear the Mayday.

B. It will send the minimal necessary information using the "Distress Button" or "Distress Hot Key."

C. It will send a more detailed Distress format if time permits and operator data entries are correctly performed.

D. It does not contain all the information normally of interest in on-scene Distress communications.

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

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

A. 8376.5 kHz

B. 8291.0 kHz

C. 8401.5 kHz

D. 8201.0 kHz

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 the proper procedure to be followed upon receipt of a Distress alert transmitted by use of Digital Selective Calling techniques?

A. Set watch on the radiotelephone Distress and Safety frequency associated with the Distress and Safety calling frequency on which the Distress alert was received.

B. Set watch on the DSC alerting frequency in the band of frequencies the alert was received.

C. Set a continuous watch on VHF-FM Channel 13, 16 and DSC on Channel 70.

D. Ship stations equipped with narrow-band direct-printing equipment should respond to the Distress alert as soon as practicable by this means.

คำถามที่ 9/50

90:00 นาที

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

A. Read the display screen and/or printout, silence the alarm, always call the Master to confirm the alert is real.

B. Silence the alarm, read the display screen and/or printout and listen for any follow on transmissions.

C. Listen for any follow on voice/TELEX transmission on the appropriate DSC frequency.

D. Silence the alarm, read the display screen and/or printout, only call the Master if the alert is within 500 NM.

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

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 14/50

90:00 นาที

What action should you take after sending a false Distress alert on 12577.0 kHz?

A. Make an "ALL STATIONS” call on the associated 12 MHz J3E frequency canceling the alert.

B. No action is necessary.

C. Make an "ALL STATIONS” call on all 5 H.F. TELEX frequencies canceling the alert.

D. Send a message to the nearest RCC via Inmarsat canceling the alert.

คำถามที่ 15/50

90:00 นาที

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

A. 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.

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

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

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

คำถามที่ 16/50

90:00 นาที

What is meant by the term "Seelonce Mayday”?

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

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

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 17/50

90:00 นาที

How are normal working conditions restored on a SITOR (NBDP) frequency on which radio silence had been imposed?

A. The LES that imposed the radio silence must transmit a SITOR (NBDP) message stating "SILENCE FINI".

B. The Public Correspondence Station (PCS) that imposed the radio silence must transmit a narrow band direct printing message on the Distress frequency stating "SILENCE FINI".

C. The RCC or Coast station that imposed the radio silence must transmit a SITOR (NBDP) message stating "SILENCE FINI".

D. The High Seas Service (HSS) that imposed the radio silence must transmit a narrow band direct printing message on the Distress frequency stating "SILENCE FINI".

คำถามที่ 18/50

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. An important meteorological warning concerning hazardous weather.

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

คำถามที่ 19/50

90:00 นาที

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

A. Abandoning the vessel just before sinking.

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

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

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

คำถามที่ 20/50

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 21/50

90:00 นาที

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

A. Five

B. Four

C. Two

D. One

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

Which action is the most appropriate action for a GMDSS radio Operator to take in a Distress situation where immediate help is needed, but the vessel is not sinking nor needs to be abandoned?

A. Transmit Distress calls by HF/MF/VHF DSC or Inmarsat.

B. Switch off EPIRB and SART manually.

C. Notify the RCC (Rescue Coordination Center) through VHF FM on channel 13.

D. Transmit Distress calls by activating the radiotelegraph automatic alarm signal.

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

At what point does a SART begin transmitting?

A. It immediately begins radiating when placed in the "on" position.

B. If it has been placed in the "on" position, it will respond when it has been interrogated by a 9-GHz radar signal.

C. It must be manually activated or water activated before radiating.

D. If it has been placed in the "on" position, it will begin transmitting immediately upon detecting that it is in water.

คำถามที่ 29/50

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 30/50

90:00 นาที

What radar display changes indicate the correct approach to a SART and what care should be taken in a SAR situation?

A. The line of dots indicate the SART's position, the dots become increasing arcs as the distance to the SART lessens, rescuing vessels should increase speed to reach Distress more quickly.

B. A line of dots on a radar screen rotates to indicate the SART's position along its line of bearing; rescuing vessels should steer for the center of the line of dots.

C. The line of dots indicate the SART's position, the dots become increasing arcs as the distance to the SART lessens, rescuing vessels should reduce speed as the arcs get greater in degree.

D. The line of dots indicate the SART's position, the dots become decreasing arcs as the distance to the SART lessens, rescuing vessels should reduce speed as the arcs lessen in degree.

คำถามที่ 31/50

90:00 นาที

How can rescue personnel detect that a SART is transmitting in the immediate vicinity?

A. The DSC unit will react to the SART's signal and respond with the two-tone auto alarm.

B. The SART can provide an approximate location to within a two nautical mile radius, per IMO standards.

C. The SART signal appears as a target which comes and goes; the effect of heavy swells on a SART.

D. The SART's dots on the PPI will become arcs and then eventually become concentric circles.

คำถามที่ 32/50

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 33/50

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 34/50

90:00 นาที

The SART is required to have sufficient battery capacity to operate in the stand-by mode for what period of time?

A. Three days

B. Four days

C. Eight hours

D. Forty-eight hours

คำถามที่ 35/50

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 36/50

90:00 นาที

Which of the following statements concerning satellite EPIRBs is true?

A. The coded EPIRB signal identifies the nature of the Distress situation.

B. The coded EPIRB signal only identifies the vessel's name and port of registry.

C. If the GMDSS Radio Operator does not program the EPIRB, it will transmit default information such as the follow-on communications frequency and mode.

D. Once activated, these EPIRBs transmit a signal for use in identifying the vessel and for determining the position of the beacon.

คำถามที่ 37/50

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 38/50

90:00 นาที

What part of a satellite EPIRB may function as a visual aid to rescue vessels?

A. Strobe light

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

C. 406 MHz signal from a satellite EPIRB.

D. Loud beeping tone emitted by the unit, once activated.

คำถามที่ 39/50

90:00 นาที

Which device provides the best method to locate a ship in Distress or survival craft in the GMDSS?

A. Satellite EPIRBs

B. Radio Direction Finder

C. MF/HF DSC

D. VHF homing device

คำถามที่ 40/50

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 41/50

90:00 นาที

Which statement is NOT true regarding the requirements of VHF Survival Craft Transceivers?

A. Operation on Ch-13 is mandatory.

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

C. Simplex (single frequency) voice communications only.

D. Operation on Ch-16 is mandatory.

คำถามที่ 42/50

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 43/50

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 44/50

90:00 นาที

Which of the following frequencies have been designated for “On-scene” communications in the Global Maritime Distress and Safety System?

A. VHF Ch-22

B. VHF Ch-16 and SITOR (NBDP) on 2174.5 kHz.

C. HF radiotelephone on 21.820 MHz.

D. SITOR (NBDP) on 2177.0 kHz and VHF Ch-16.

คำถามที่ 45/50

90:00 นาที

For “On-scene” communications, vessels in Distress and SAR Aircraft should use?

A. VHF Ch-70, 4125 kHz J3E, 5680 kHz J3E

B. VHF Ch-70, 4125 kHz J2B, 5680 kHz J3E

C. VHF Ch-16, 4125 kHz F1B, 3023 kHz J3E

D. VHF Ch-16, 4125 kHz J3E, 3023 kHz J3E

คำถามที่ 46/50

90:00 นาที

Which of these would be vital to a GMDSS SAR situation in polar regions?

A. GOES satellites to receive Distress Alerts and HF Voice for follow-on and SAR activity.

B. GOES satellites to receive Distress Alerts and Inmarsat Voice for follow-on and SAR activity.

C. Inmarsat satellites to receive Distress Alerts and HF Voice for follow-on and SAR activity.

D. COSPAS/SARSAT satellites to receive Distress Alerts and HF Voice for follow-on and SAR activity.

คำถามที่ 47/50

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 48/50

90:00 นาที

Which statement is NOT true regarding an Inmarsat Distress Alert?

A. USCG coast stations will receive the alert and immediately notify the correct RCC.

B. The operator selection of LES will determine which associated RCC will receive the alert.

C. If the operator selects an invalid or inoperative LES code the NCS for that service will intercept the call and reroute the alert.

D. If the LES choice is not updated properly the Distress Alert might be routed to a non-optimum RCC, introducing delays and confusion into the Distress situation.

คำถามที่ 49/50

90:00 นาที

What are the best resources for researching and planning equipment setups and updates prior to any potential Distress situation?

A. NGA Pub. 117, Inmarsat hanossok or manufacturer’s equipment manuals.

B. Inmarsat hanossok, FCC Part 80 or ITU List of Coast stations.

C. ITU List of Coast stations, IMO GMDSS hanossok, FCC Part 80.

D. Inmarsat hanossok, NGA Pub, 117 or ITU List of Coast stations.

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.

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