NBTC ONE STOP SERVICE

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 2/50

90:00 นาที

How can vessel personnel detect the operation of a SART in its vicinity?

A. A unique two-tone "warbling" signal heard on VHF-FM Ch-70.

B. It will activate an AIS new signal alarm on the AIS receiver.

C. The SART signal appears as a target that comes and goes -- due to the effect of heavy swells on a SART.

D. A unique 3-cm signal consisting of a 12-dot pattern radiating outward from a SART's position along its line of bearing.

คำถามที่ 3/50

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 4/50

90:00 นาที

What statement is true regarding tests and maintenance that could be provided for the SART?

A. Full verification within manufacturer's specifications by the on-board maintainer would be a requirement for all vessels in the A3 & A4 sea areas using measuring equipment to generate 9 GHz signals.

B. Battery should be replaced within the 90 day grace period following the manufacturer's expiration date shown on the SART and the SART should only be tested at-sea to reduce interference to other vessels.

C. Extreme care should be exercised because testing of the SART may be received by other vessels, may be interpreted as a Distress condition, or it may interfere with other vessels' safe navigation.

D. Battery should be replaced with a new one before the manufacturer's expiration date shown on the SART and the SART should only be tested in port to reduce interference to other vessels.

คำถามที่ 5/50

90:00 นาที

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

A. 406 MHz EPIRBs are units that are used as alerting devices.

B. Doppler frequency measurements provide more precise locations than GPIRB signals.

C. The Doppler frequency measurement concept is used to determine the EPIRB's location.

D. Satellites in a low-earth polar orbit detect EPIRB beacons on 406 MHz and relay the information to a Local User Terminal (LUT).

คำถามที่ 6/50

90:00 นาที

What feature is not a component of a 406 MHz satellite EPIRB?

A. 121.5 MHz emergency homing transmitter.

B. Emergency transmission on 406.025 MHz.

C. Float-free release bracket.

D. Aural locator signal.

คำถามที่ 7/50

90:00 นาที

Which of the following EPIRBs is most likely to be used to transmit a Distress alert signal?

A. S-Band EPIRBs

B. X-Band EPIRBs

C. 406 MHz EPIRBs

D. 121.5/243 MHz EPIRBs

คำถามที่ 8/50

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 9/50

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 10/50

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 11/50

90:00 นาที

Equipment for radiotelephony use in survival craft stations under GMDSS must have what characteristic(s)?

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 12/50

90:00 นาที

On Scene communications should be conducted on which of the following channels?

A. 406 MHz

B. VHF Ch-22A

C. VHF Ch-16/06

D. VHF Ch-70

คำถามที่ 13/50

90:00 นาที

Passenger vessel “On Scene” communications should be conducted with aircraft on which of the following channels or frequencies?

A. 9 GHz

B. VHF Ch-13

C. VHF Ch-26

D. VHF 121.5 MHz

คำถามที่ 14/50

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 15/50

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.

คำถามที่ 16/50

90:00 นาที

Which of the following is the primary frequency that is used exclusively for NAVTEX broadcasts internationally?

A. 518 kHz

B. 2187.5 kHz

C. 4209.5 kHz

D. VHF channel 16 when the vessel is sailing in Sea Area A1, and 2187.5 kHz when in Sea Area A2.

คำถามที่ 17/50

90:00 นาที

What is the transmitting range of most NAVTEX stations?

A. Typically 50-100 nautical miles (90-180 km) from shore.

B. Typically 200-400 nautical miles (360-720 km).

C. Typically upwards of 1000 nautical miles (1800 km) during the daytime.

D. It is limited to line-of-sight or about 30 nautical miles (54 km).

คำถามที่ 18/50

90:00 นาที

Which of the following statements is true?

A. No NAVTEX receiver can be programmed to reject category A, B, D and L messages since they are mandatory to be received via NAVTEX.

B. A GMDSS Radio Operator may choose to program certain NAVTEX receivers to reject category A, B, D and L messages if they are being received by another MSI system.

C. Upon entering a new NAVTEX station's broadcast range, the GMDSS Radio Operator enters the station's SELCAL number.

D. The GMDSS Radio Operator can select the "None" option in the message category menu.

คำถามที่ 19/50

90:00 นาที

What means are used to prevent the reception of unwanted broadcasts by vessels utilizing the NAVTEX system?

A. Operating the receiver only during daytime hours.

B. Coordinating reception with published broadcast schedules.

C. Programming the receiver to reject certain stations and message categories.

D. Automatic receiver de-sensitization during night hours.

คำถามที่ 20/50

90:00 นาที

What statement is true regarding the control the operator can exercise over the NAVTEX receiver's operation?

A. The operator can set the unit to automatically reject any and all categories of messages if the ship desires to not receive them.

B. Upon entering a coastal area for the first time, the operator enters code KK to indicate "ready to receive NAVTEX".

C. The operator can set most units to reject all messages except navigation, meteorological warnings, and search and rescue messages. If the unit will reject such messages it may be unsafe to do so.

D. To reduce the number of messages, the operator can select code 00 to indicate "not in coastal passage".

คำถามที่ 21/50

90:00 นาที

What determines whether a NAVTEX receiver prints a particular type of message content from a programmed NAVTEX station?

A. The serial number and type of message have already been received but additional printouts are generated to ensure receipt aboard the vessel.

B. The serial number and type of message has not been previously received or the subject indicator has not been programmed for rejection.

C. The subject indicator has been programmed for rejection by the operator but the message contains a priority override print command.

D. The transmitting station ID covering your area has been programmed for rejection by the operator or has not been previously received.

คำถามที่ 22/50

90:00 นาที

What system can provide an automated service in coastal waters where it may not be feasible to establish the NAVTEX service or where shipping density is too low to warrant its implementation?

A. AMVER

B. VHF DSC

C. ARQ SITOR (NBDP)

D. SafetyNETTM

คำถามที่ 23/50

90:00 นาที

Aboard ship, SafetyNETTM. messages can be received by which equipment/methods?

A. EGC receiver of the vessel's Inmarsat-C SES.

B. VHF DSC on the weather channels.

C. NAVTEX Receiver on 518 kHz or the Tropical Navtex frequency

D. HF SITOR (NBDP) MSI frequencies.

คำถามที่ 24/50

90:00 นาที

Maritime Safety Information is promulgated via satellite through which system?

A. SafetyNETTM

B. AMVER

C. NAVTEX

D. Inmarsat-M SES

คำถามที่ 25/50

90:00 นาที

Which satellite system promulgates Maritime Safety Information?

A. AMVER

B. NAVTEX

C. Inmarsat-C SafetyNETTM

D. Inmarsat-M SES

คำถามที่ 26/50

90:00 นาที

To receive all mandatory MSI using the SafetyNETTM. system the vessel must:

A. Log-in and ensure the position is accurate to receive MSI for the NAVAREA the vessel is currently within.

B. Notify the NAVAREA coordinator you are using SafetyNETTM for the receipt of MSI (Maritime Safety Information).

C. Set the receiver to your destination Inmarsat Ocean Region.

D. Notify the NAVAREA coordinator you are using SafetyNETTM for the receipt of MSI (Maritime Safety Information) and set the receiver to your destination Ocean Region.

คำถามที่ 27/50

90:00 นาที

Which of the following provides a unique automated system capable of addressing messages to pre-determined groups of ships or all vessels in both fixed and variable geographic areas?

A. NAVTEX

B. EGC

C. AFRTS

D. NAVAREAs

คำถามที่ 28/50

90:00 นาที

What system may be useful for messages, such as local storm warnings or a shore-to-ship Distress alert, for which it is inappropriate to alert all ships in the satellite coverage area?

A. NAVTEX

B. AMVER

C. EGC

D. DSC

คำถามที่ 29/50

90:00 นาที

What services are available through Enhanced Group Calls?

A. Maritime Safety Information and vessel traffic lists.

B. Hourly NOAA weather broadcasts from the NWS.

C. Maritime Safety Information and messages to pre-defined groups of subscribers.

D. Coastal weather broadcasts.

คำถามที่ 30/50

90:00 นาที

What messages originate from registered information providers anywhere in the world and are broadcast to the appropriate ocean region via a LES?

A. AMVER broadcasts

B. Urgency messages

C. NAVTEX broadcasts

D. SafetyNETTM messages

คำถามที่ 31/50

90:00 นาที

Setting the squelch control to just beyond the point where the background noise disappears results in:

A. Maximum sensitivity without background noise.

B. Reduced sensitivity without background noise.

C. Minimum background noise with reduced sensitivity.

D. Greater bandwidth without background noise.

คำถามที่ 32/50

90:00 นาที

Proper and legal VHF operations require all of these except?

A. The channel must be designated as valid for the nature or type of communications desired.

B. Simplex, duplex and alpha channel modes must be correctly selected.

C. The correct bandwidth must be selected by the operator.

D. The power level must be appropriately chosen by the operator.

คำถามที่ 33/50

90:00 นาที

Which of the following factors does not normally affect the range of VHF transmissions?

A. Salt water ingress into the antenna coaxial cable.

B. Power level setting.

C. Vessel antenna height.

D. Ionospheric refraction.

คำถามที่ 34/50

90:00 นาที

What channel would you use to place a call to a shore telephone?

A. Ch-16

B. Ch-70

C. Ch-06

D. Ch-28

คำถามที่ 35/50

90:00 นาที

What channel is always being continuously monitored?

A. Ch-70

B. Ch-28

C. Ch-80

D. Ch-16

คำถามที่ 36/50

90:00 นาที

Which of the following channels may be used for duplex communications?

A. Ch-70

B. Ch-26

C. Ch-5A

D. Ch-22A

คำถามที่ 37/50

90:00 นาที

Which of the following statements is true?

A. You should always use the “INT” setting for calling a Public Correspondence station.

B. Using the “USA” setting changes certain channels from duplex to simplex operation.

C. You should use Ch-22 when calling the U. S. Coast Guard.

D. Using the “INT” setting will prevent proper Ch-13 Bridge-to-Bridge operations.

คำถามที่ 38/50

90:00 นาที

The USA-INT control on VHF units:

A. Selects duplex operations for U.S. coastal waters and simplex operations in non-U.S. waters, on the "alpha" channels.

B. Ensures that the “alpha” channels are correctly set to duplex for use in U.S. waters & on VTS channels.

C. Changes selected international duplex channels to simplex channels for use in U.S. waters, on the "alpha" channels.

D. Changes selected international simplex channels to duplex channels for use in U.S. waters, on the "alpha" channels.

คำถามที่ 39/50

90:00 นาที

A DSC Safety call might be used under the following conditions:

A. Navigation Hazard

B. Man overboard

C. Distress situation

D. Serious medical request

คำถามที่ 40/50

90:00 นาที

To send a Distress alert use the following procedure:

A. Initiate a menu call to select Ch-16 for voice communications.

B. Use the “Distress Hot Key” in an appropriate manner.

C. Always insert the nature of the Distress first.

D. Make a voice Mayday call on Ch-16 before any other action.

คำถามที่ 41/50

90:00 นาที

DSC Urgency priority calls may be sent using the “Distress Hot Key” under the following circumstances:

A. If no additional information is required to be transmitted.

B. Under NO circumstances.

C. Only if the position information is correct.

D. The “Distress Hot Key” can be programmed for either Urgency or Distress as required.

คำถามที่ 42/50

90:00 นาที

A DSC Safety priority call might be used under the following circumstances:

A. A crew member is missing and presumed lost overboard.

B. There is a fire in the engine room.

C. A lifeboat has been lost over the side in heavy weather and is adrift.

D. A medical situation that did not present an imminent danger of loss of life.

คำถามที่ 43/50

90:00 นาที

What would be the appropriate channel selection for follow-on voice communications for a Routine priority call to another vessel?

A. Ch-70

B. Ch-16

C. Ch-22

D. Ch-08

คำถามที่ 44/50

90:00 นาที

What conditions must exist for a completely automatic DSC acknowledgement of a Routine call and change to suggested working channel?

A. Both stations must be monitoring Ch-16 or the sending station must be set up for automatic DSC response.

B. The receiving station must be monitoring the suggested working frequency.

C. All routine priority DSC calls must be manually acknowledged by the watch officer.

D. The receiving station must be set up for automatic DSC response.

คำถามที่ 45/50

90:00 นาที

What precautions should be taken when reviewing previously transmitted messages?

A. Press the “Call” key when finished.

B. Always save the message.

C. Take steps not to accidentally send the message again.

D. No precautions are necessary.

คำถามที่ 46/50

90:00 นาที

How many times is it possible to change your own MMSI number in a VHF unit?

A. It is not possible.

B. It may be changed by the operator up to 4 times.

C. MMSI numbers can only be changed by the manufacturer.

D. On some units it can be changed at will if the password is known.

คำถามที่ 47/50

90:00 นาที

What precautions should be taken when reviewing received Distress messages?

A. Take steps not to accidentally send a DSC acknowledgement or relay.

B. Press the “Call” key when finished.

C. Always save the message.

D. No precautions are necessary.

คำถามที่ 48/50

90:00 นาที

Which of the following is not true regarding vessel position information?

A. The position is normally provided from GPS input.

B. The time of the updated position should be UTC or the correct local zone time.

C. If the position is not automatically updated it must be manually updated every 4 hours.

D. The position information must be periodically checked to ensure that it remains current and accurate.

คำถามที่ 49/50

90:00 นาที

Which of the following statements on address book entries is not correct?

A. Shore based telephone numbers may be entered for automatic telephone calls ashore.

B. Address book entries can only be used to call shore stations.

C. Public Correspondence Stations may be entered.

D. A vessel’s name and MMSI number may be entered.

คำถามที่ 50/50

90:00 นาที

What can the operator do to adjust the audible alarm?

A. The operator can choose to disable the audible alarm.

B. VHF DSC units only have visual alarms.

C. The alarm cannot be disabled for Distress and Urgency messages.

D. The audible alarm control has the same indication for all four message priorities.

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