KEY TOPIC-#001: FUNDAMENTAL CONCEPTS:

001A- What is the fundamental concept of the GMDSS?

a\) It is intended to automate and improve emergency communications in
the maritime industry.

b\) It is intended to automate and improve existing digital selective
calling procedures and techniques.

c\) It is intended to provide more effective but lower cost commercial
communications.

d\) It is intended to provide compulsory vessels with a collision
avoidance system when they are operating in waters that are also
occupied by non-compulsory vessels.

001B- The primary purpose of the GMDSS is?

a\) Allow more effective control of SAR situations by vessels.

b\) Provide additional shipboard systems for more effective company
communications.

c\) Automate and improve emergency communications for the world\'s
shipping industry.

d\) Effective and inexpensive communications.

001C- What is the basic concept of GMDSS?

a\) Search and rescue authorities ashore can be alerted to a distress
situation.

b\) Shipping in the immediate vicinity of a ship in distress will be
rapidly alerted.

c\) Shoreside authorities and vessels can assist in a coordinated SAR
operation with minimum delay.

d\) All of these.

001D- GMDSS is primarily a system based on?

a\) Ship-to-ship distress communications using MF or HF radiotelephony.

b\) VHF digital selective calling from ship to shore.

c\) Distress, urgency and safety communications carried out by the use
of narrow-band direct printing telegraphy.

d\) The linking of search and rescue authorities ashore with shipping in
the immediate vicinity of a ship in distress or in need of assistance.

001E- What is the responsibility of vessels under GMDSS?

a\) Vessels over 300 gross tons may be required to render assistance if
such assistance does not adversely affect their port schedule.

b\) Only that vessel, regardless of size, closest to a vessel in
distress, is required to render assistance.

c\) Every ship is able to perform those communications functions that
are essential for the safety of the ship itself and of other ships.

d\) Vessels operating under GMDSS, outside of areas effectively serviced
by shoreside authorities, operating in sea areas A2, and A4 may be
required to render assistance in distress situations.

001F- GMDSS is required for which of the following?

a\) All vessels capable of international voyages.

b\) Vessels operating outside of the range of VHF coastal radio
stations.

c\) SOLAS Convention ships of 300 gross tonnage or more.

d\) Coastal vessels of less than 300 gross tons.

Key Topic #001 Answer Key: A: a) B: c) C: d) D: d) E: c) F: c).

KEY TOPIC-#002: EQUIPMENT SYSTEMS:

002A- What equipment is associated with the land or terrestrial systems?

a\) EPIRB.

b\) VHF-MF-HF.

c\) Inmarsat-C.

d\) GPS.

002B- What equipment is associated with the space systems?

a\) VHF-MF-HF.

b\) Inmarsat-C.

c\) Navtex.

d\) SART.

002C- What equipment is used in or near the survival craft?

a\) Navtex.

b\) Fathometer.

c\) Cospas-Sarsat.

d\) EPIRB.

002D- What equipment is programmed to initiate transmission of distress
alerts and calls to individual stations?

a\) Navtex.

b\) GPS.

c\) DSC controller.

d\) Scanning Watch Receiver.

002E- What system provides accurate vessel position information to the
GMDSS equipment?

a\) GPS.

b\) Cospas-Sarsat.

c\) EPIRB.

d\) Inmarsat-A.

002F- What is the primary equipment for receiving MSI.

a\) SART.

b\) EPIRB.

c\) Navtex.

d\) Inmarsat-A.

Key Topic #002 Answer Key: A: b) B: b) C: d) D: c) E: a) F: c).

KEY TOPIC-#003: SEA AREAS:

003A- Which of the following region lies outside Sea Areas A1, A2, and
A3?

a\) Sea Areas only apply to Inmarsat footprint areas.

b\) Sea Area A3-I (Inmarsat coverage) and Sea Area A3-S (HF SITOR
coverage).

c\) There are no additional Sea Areas.

d\) Sea Area A4.

003B- What sea area is defined as being within range of a shore-based MF
station that provides for continuous DSC alerting?

a\) Sea area A2.

b\) Coastal waters.

c\) Sea area A3.

d\) Sea area A1.

003C- If a vessel is engaged in local trade and at no point in its
voyage travels outside of the range of a VHF shore station with
continuous DSC alerting then the vessel is operating in what area?

a\) Coastal and international zones.

b\) Inland and coastal waters.

c\) Sea areas A1 and A2.

d\) Sea area A1.

003D- What is defined as an area, excluding sea areas A1 and A2, within
the coverage of an Inmarsat geostationary satellite in which continuous
alerting is available?

a\) Ocean Area Regions AOR-E, AOR-W, POR or IOR.

b\) Sea Area A4.

c\) Sea Area A3.

d\) Coastal and Inland Waters.

003E- SITOR equipment is a full, partial or alternate carriage
requirement under GMDSS for vessels operating in which sea area(s)?

a\) A1.

b\) A1 and A2.

c\) A3 and A4.

d\) A1, A2, A3 and A4.

003F- What is defined as the area within the radiotelephone coverage
area of at least one VHF coast station in which continuous DSC alerting
is available as defined by the IMO regulation for GMDSS?

a\) Sea Area A1.

b\) Ocean Area Regions AOR-E, AOR-W, POR or IOR.

c\) Sea Area A2.

d\) Coastal and Inland Waters.

Key Topic #003 Answer Key: A: d) B: a) C: d) D: c) E: c) F: a).

KEY TOPIC-#004: FUNCTIONAL REQUIREMENTS:

004A- Which of the following is a functional or carriage requirement for
compulsory vessels?

a\) A compulsory vessel must carry at least two (2) licensed GMDSS Radio
Operators.

b\) A compulsory vessel must satisfy certain equipment carriage
requirements that are determined by where the vessel sails.

c\) A compulsory vessel must be able to transmit and respond to distress
alerts.

d\) All of the above.

004B- Which communications functions must all vessels be capable of
performing under GMDSS as defined

by the International Maritime Organization?

a\) Radio Direction Finding.

b\) Distress alerting to and from vessels, search and rescue
coordination, on-scene communications, signals for locating, maritime
safety information, general and bridge-to-bridge communications.

c\) Communications in each of the operational ocean areas.

d\) All communications possible within the International Safety-Net
service.

004C- GMDSS-equipped ships will be required to perform which of the
following communications functions?

a\) Distress alerting and maritime safety information.

b\) Search and Rescue coordination and on-scene communications.

c\) Bridge-to-bridge and general radio communications.

d\) All of these.

004D- What equipment can be used to receive Maritime Safety Information?

a\) Navtex.

b\) EGC receiver.

c\) HF NBDP.

d\) All of the above.

004E- Which of the following is a required GMDSS function?

a\) Bridge-to-Bridge communications.

b\) Reception of weather map facsimile broadcasts.

c\) Both of the above.

d\) None of the above.

004F- Which of the following is a required GMDSS function?

a\) Transmit and receive locating signals.

b\) Transmit and receive general communications.

c\) Both of the above.

d\) None of the above.

Key Topic #004 Answer Key: A: d) B: b) C: d) D: d) E: a) F: c).

KEY TOPIC-#005: EQUIPMENT CARRIAGE REQUIREMENTS:

005A- Which statement is true regarding a vessel equipped with GMDSS
equipment that will remain in Sea Area A1 at all times?

a\) The vessel must be provided with a radio installation capable of
initiating the transmission of ship-to-shore distress alerting from the
position from which the ship is normally navigated.

b\) VHF DSC alerting may be the sole means of distress alerting.

c\) HF or MF DSC may satisfy the equipment requirement.

d\) HF SSB with 2182 kHz automatic alarm generator may satisfy the
equipment requirement.

005B- What statement is true regarding the additional equipment carriage
requirement imposed for the survival craft of vessels over 500 gross
tons?

a\) Additional carriage of two radio equipped lifeboats aft.

b\) A second radar transponder is required.

c\) Four additional portable VHF radios are required.

d\) The ability to communicate in all modes with any shore station.

005C- Vessels operating in which sea area(s) are required to carry
either Inmarsat or HF equipment or a combination thereof under GMDSS?

a\) All sea areas.

b\) A3

c\) A4

d\) A1

005D- Within a single sea area, what is the primary reason GMDSS imposes
carriage requirements for different radio subsystems?

a\) Redundancy in duplicating all operational functions in the event of
a system failure.

b\) Each subsystem has a specific purpose and capabilities that
generally cannot be duplicated by other subsystems.

c\) Different radio systems may be used by the various authorities.

d\) The ability to communicate in all modes with any of the shore
stations.

005E- If operating within Ocean Area A1, and outside of NAVTEX coverage,
a GMDSS-equipped vessel must carry?

a\) An Inmarsat-A terminal.

b\) A GPS receiver.

c\) Equipment capable of maintaining a continuous DSC watch on 2187.5
kHz.

d\) Equipment capable of reception of maritime safety information by the
Inmarsat enhanced group call system, or HF NBDP.

005F- What is the equipment carriage requirement for survival craft
under GMDSS?

a\) At least three approved two-way VHF radiotelephones on every
passenger ship and cargo ships of 500 gross tons and upwards.

b\) At least two approved two-way VHF radiotelephones on every cargo
ship between 300-500 gross tons.

c\) At least one radar transponder must be carried on every cargo ship
of 300-500 gross tons and two transponders (one for each side) of every
passenger ship and every cargo ship of 500 gross tons and upward.

d\) All of these.

Key Topic #005 Answer Key: A: a) B: b) C: b) D: b) E: d) F: d).

KEY TOPIC-#006: MAINTENANCE OPTIONS:

006A- Which of the following statements concerning maintenance
requirements is false?

a\) Compulsory vessels sailing in Sea Areas A1 and A2 must provide any
one of the three maintenance options which are duplication of equipment,
shore-based, or at-sea maintenance capability.

b\) Compulsory vessels sailing in Sea Areas A3 and A4 must provide any
two of the three maintenance options which are duplication of equipment,
shore-based, or at-sea maintenance capability.

c\) If shore-based maintenance is used, maintenance services do not have
to be completed or performance verified unless the vessel will be
sailing to a non-US port.

d\) Equipment warranties do not satisfy GMDSS maintenance requirements.

006B- Which of the following statements concerning maintenance
requirements is true?

a\) The options are duplication of equipment, at-sea maintenance, and
shore-based maintenance.

b\) Compulsory vessels between 300-500 gross tons are required only to
provide one maintenance option, while compulsory vessels larger than 500
gross tons and all passenger vessels are required to provide any two of
the three maintenance options.

c\) The \"at-sea\" maintenance may be waived if the compulsory vessel
carries at least three licensed GMDSS Radio Operators.

d\) Compulsory vessels operating in Sea Area A4 are required to carry at
least one licensed GMDSS Radio Maintainer.

006C- Which of the following is a requirement, under GMDSS, for all
vessels over 300 gross tons operating within range of a MF-DSC equipped
shore station?

a\) Ship\'s Master or radio officer must be on duty at all times.

b\) At least 2nd class Telegraphy license or GMDSS Element 9 is required
for the radio officer.

c\) Spare parts and maintenance kit for repairs.

d\) Only one of the three maintenance options is required.

006D- What statement is generally correct regarding the maintenance
requirements for ships under GMDSS?

a\) Redundancy of functions of certain equipment will partially meet
this requirement.

b\) On-board maintenance provided by a person holding a GMDSS
Maintainer\'s license will partially meet the requirements.

c\) Shoreside maintenance and scheduled tests and inspections will
partially meet this requirement.

d\) All of the above.

006E- A ship operating in sea area A-3 must have the following
provisions for maintenance:

a\) Duplication of Equipment.

b\) Shore Maintenance.

c\) At Sea Maintenance.

d\) Any two of the above.

006F- A ship operating in sea area A-1 must have the following
provisions for maintenance:

a\) Shore maintenance.

b\) Duplication of equipment.

c\) At Sea Maintenance.

d\) Any one of the above.

Key Topic #006 Answer Key: A: c) B: a) C: d) D: d) E: d) F: d).

KEY TOPIC #007: RADIO SPECTRUM:

007A- What is the frequency range for Medium Frequency?

a\) 30-300 kHz

b\) 300-3,000 kHz

c\) 1,000-10,000 kHz

d\) 10-30 MHz

007B- What is the frequency range for High Frequency?

a\) 3-30 MHz

b\) 300-3,000 kHz

c\) 30-300 MHz

d\) 10-30 MHz

007C- What is the frequency range for Very High Frequency?

a\) 3-30 MHz

b\) 300-3,000 kHz

c\) 30-300 MHz

d\) 10-30 MHz

007D- What is the frequency range for Ultra High Frequency?

a\) 3-30 MHz

b\) 300-3,000 MHz

c\) 30-300 MHz

d\) 10-30 MHz

007E- What is the frequency range for Super High Frequency?

a\) 30-300 GHz

b\) 300-3,000 MHz

c\) 30-300 MHz

d\) 3-30 GHz

007F- What is the primary frequency range for long distance skywave
communications?

a\) 3-30 MHz

b\) 300-3,000 kHz

c\) 30-300 MHz

d\) 10-30 MHz

Key Topic #007 Answer Key: A: b) B: a) C: c) D: b) E: d) F: a).

KEY TOPIC #008: FREQUENCY BANDS:

008A- Which of the following systems is most likely to be subject to
fading or static interference?

a\) HF SITOR.

b\) Inmarsat.

c\) Digital Selective Calling on channel 70.

d\) VHF ARQ.

008B- Which system is most likely to be affected by atmospheric
disturbances?

a\) MF/HF radiotelephony.

b\) VHF DSC.

c\) Inmarsat.

d\) SafetyNET.

008C- Which of the following systems is least likely to be subject to
fading or static interference?

a\) HF SITOR.

b\) Inmarsat.

c\) MF-HF DSC Controller.

d\) VHF ARQ.

008D- Which system is least likely to be affected by atmospheric
disturbances?

a\) NAVTEX.

b\) Inmarsat.

c\) MF NBDP.

d\) HF NBDP.

008E- Which of the following frequency bands would most likely provide
reliable communications between two stations that are 100 miles (160 km)
apart?

a\) The Low Frequency (LF) band.

b\) The Medium Frequency (MF) band.

c\) The High Frequency (HF) band.

d\) The Very High Frequency (VHF) band.

008F- Which system has the least effective radius of operation?

a\) HF SITOR.

b\) MF NBDP.

c\) VHF DSC.

d\) NAVTEX.

Key Topic #008 Answer Key: A: a) B: a) C: b) D: b) E: b) F: c).

KEY TOPIC #009: MODULATION-DEMODULATION, AM & FM:

009A- What statement best describes modulation?

a\) Imposing intelligence onto a radio carrier signal.

b\) Changing mark-space to 1 and 0.

c\) Adjusting the frequency to the optimum band for long distance
communications.

d\) Converting the carrier from a low frequency to a higher frequency.

009B- What statement best describes demodulation?

a\) Detuning the receiver to remove interfering signals.

b\) Removing atmospheric noise from the signal.

c\) Removing the information signal from the carrier.

d\) Separating the telex signals from the voice signals.

009C- Which statement best describes amplitude modulation?

a\) The character data from the terminal is changed to audio tones.

b\) The frequency is varied in synchronization with the modulating
signal.

c\) The information signal changes the amplitude but does not change the
carrier frequency.

d\) The amplitude of the carrier is changed but there is still only a
single frequency being transmitted.

009D- What is the emission designation for MF-HF voice signals?

a\) F1B

b\) J3E

c\) J2B

d\) F3E

009E- Which statement best describes frequency modulation?

a\) Both the amplitude and frequency are changed by the modulating
signal.

b\) The frequency is changed by the information signal and the amplitude
remains unchanged.

c\) Frequency modulation is subject to interference by atmospheric
noise.

d\) High level mixing of the final amplifier signal and the information
signal.

009F- What is the emission designation for VHF-FM?

a\) F3C

b\) J2B

c\) F3E

d\) AME

Key Topic #009 Answer Key: A: a) B: c) C: c) D: b) E: b) F: c).

KEY TOPIC #010: CARRIER, SIDEBANDS,

010A- Which of the following statements describes the carrier?

a\) The carrier consists of at least 3 separate but closely spaced
frequencies.

b\) The carrier is a Radio Frequency (RF) signal that is modified to
carry intelligence.

c\) The carrier is used to modulate the information signal.

d\) There are always sidebands on either side of the carrier.

010B- How many sidebands are present in a standard A.M. signal?

a\) One

b\) Four

c\) Two

d\) Three

010C- How many sidebands are present in the J3E mode?

a\) Two sidebands and a carrier.

b\) One upper sideband.

c\) One lower sideband.

d\) Two carriers and one sideband.

010D- What is the signal transmitted in H3E mode?

a\) Two sidebands, upper and lower.

b\) A reduced carrier and the lower sideband.

c\) A full carrier and the upper sideband.

d\) A full carrier and both upper and lower sidebands.

010E- What is the signal transmitted in J2B mode?

a\) A full carrier and one sideband.

b\) A full carrier and two sidebands.

c\) An upper sideband of 2 alternating tones.

d\) An upper sideband of a single tone switched on and off.

010F- Which of the following statements is true?

a\) An RF carrier is always required to carry the information.

b\) There is only a single tone used in J2B mode.

c\) Both of the above.

d\) None of the above.

Key Topic #010 Answer Key: A: b) B: c) C: b) D: c) E: c) F: d).

KEY TOPIC #011: CHANNEL SPACING.

011A- What is the channel spacing for MF-HF voice frequencies?

a\) 2.8 kHz

b\) 500 Hz

c\) 3.5 kHz

d\) 3 kHz

011B- What is the channel spacing for SITOR frequencies?

a\) 500 Hz

b\) 170 Hz

c\) 300 Hz

d\) 3 kHz

011C- You look up a frequency table and all the listings end in either
.0 or .5 kHz. What kind of emission is used with these frequencies?

a\) NBDP/SITOR.

b\) SSB Voice.

c\) Both of the above.

d\) None of the above.

011D- How many SITOR signals can occupy the space of one voice signal?

a\) 2

b\) 4

c\) 6

d\) 10

011E- Which emission mode occupies the most bandwidth?

a\) J2B

b\) J3E

c\) F1B

d\) F3E

011F- Which mode occupies the least bandwidth?

a\) H3E

b\) J2B

c\) AME

d\) F3E

Key Topic #011 Answer Key: A: d) B: a) C: a) D: c) E: d) F: b).

KEY TOPIC #012: ANTENNAS.

012A- A vertical (whip) antenna has a radiation pattern best described
by?

a\) A figure eight.

b\) A cardioid.

c\) A circle.

d\) An ellipse.

012B- A half wave horizontal dipole antenna has a radiation pattern best
described by?

a\) A figure eight.

b\) A cardioid.

c\) A circle.

d\) An ellipse.

012C- A vertical quarter wave antenna with a good ground connection
will:

a\) Act like a half wave antenna.

b\) Not function due to being grounded.

c\) Only be used in Satellite communications.

d\) None of these.

012D- What is the most common type of antenna for GMDSS MF-HF?

a\) Horizontally polarized whip antenna.

b\) Long wire antenna.

c\) Vertical whip.

d\) None of the above.

012E- What is the most common type of antenna for GMDSS VHF?

a\) Horizontally polarized circular antenna.

b\) Long wire antenna.

c\) Both of the above.

d\) None of the above.

012F- What advantage does a vertical whip have over a long wire?

a\) It radiates more signal fore and aft.

b\) It radiates equally well in all directions.

c\) It radiates a strong signal vertically.

d\) None of the above.

Key Topic #012 Answer Key: A: c) B: a) C: a) D: c) E: d) F: b).

KEY TOPIC #013: INSPECTIONS AND EXEMPTIONS:

013A- How often must a compulsory vessel\'s GMDSS radio station be
inspected?

a\) Annually, by the U.S. Coast Guard.

b\) Annually, by the FCC or designated authority.

c\) Annually, by the FCC, and every six months if the vessel sails
outside of Sea Areas A1 and A2.

d\) The FCC\'s annual inspection may be waived if and only if monthly
inspections are performed by the vessel\'s on-board GMDSS Radio
Maintainer.

013B- What periodic inspection is required in order to remain in
compliance with the regulations regarding GMDSS ship radio station
inspections?

a\) U.S. Coast Guard annual inspection.

b\) F.C.C. annual inspection.

c\) F.C.C. inspection every five years.

d\) Periodic inspections not required if on board maintainers perform
routine preventive maintenance.

013C- Which statement is false regarding a GMDSS-equipped ship?

a\) A conditional or partial exemption may be granted, in exceptional
circumstances, for a single voyage outside the sea area for which the
vessel is equipped.

b\) Ships must have the required equipment inspected at least once every
five years.

c\) The regulations apply to all passenger ships regardless of size and
cargo ships of 300 gross tons and upwards.

d\) Ships must carry at least two persons holding a GMDSS Radio
Operator\'s license for distress and safety radio-communications
purposes.

013D- Which statement is false regarding a GMDSS equipped ship?

a\) A conditional or partial exemption may not be granted, in
exceptional circumstances, for a single voyage outside the sea area for
which the ship is equipped.

b\) Ships must have the required equipment inspected at least once every
12 months.

c\) The regulations apply to all passenger ships regardless of size and
cargo ships of 300 gross tons and upwards.

d\) Ships must carry at least two persons holding a GMDSS Radio
Operator\'s license for distress and safety radio-communications
purposes.

013E- During an annual FCC inspection:

a\) All required documents and publications might have to be produced.

b\) Licensed GMDSS operators may be required to demonstrate equipment
competencies.

c\) All required equipment must be fully operational.

d\) All of the above.

013F- Foreign governments or administrations may inspect the radio
installation:

a\) When the ship\'s station license cannot be produced without delay.

b\) When irregularities are observed.

c\) Both of the above.

d\) None of the above.

Key Topic #013 Answer Key: A: b) B: b) C: b) D: a) E: d) F: c).

KEY TOPIC #014: REQUIRED DOCUMENTS AND PUBLICATIONS:

014A- Which of the following references should the GMDSS Radio Operator
consult for information on the proper operation of equipment?

a\) ITU List of Equipment Operations.

b\) The manufacturer\'s operator manuals.

c\) 47 CFR Part 80.

d\) Information is available through SafetyNET channels.

014B- Where can GMDSS regulations pertaining specifically to U.S.-flag
vessels be found?

a\) These are located in CCIR #476.

b\) These are located in FCC Part 83.

c\) These are published only by the U.S. Coast Guard.

d\) These are located in 47 CFR 80.

014C- What should the GMDSS Radio Operator consult to review the proper
procedures to be followed in distress situations under GMDSS?

a\) IMO Recommendations.

b\) The manufacturer\'s instruction manuals.

c\) Part 90 of the FCC Rules and Regulations.

d\) Part 80, Subpart W of the FCC Rules and Regulations.

014D- Which of the following documents are required by GMDSS for vessels
on international voyages (other than the Great Lakes)?

a\) A copy of the IMO master plan of shore-based facilities.

b\) Station logs.

c\) Part 80 FCC rules and regulations.

d\) All of these.

014E- Which of the following documents are required by Part 80 of the
FCC rules for vessels on international voyages (other than the Great
Lakes)?

a\) Appropriate Safety Convention Certificate.

b\) List of Call Signs and Numerical Identities. (ITU List VII-A)

c\) List of Radiodetermination and Special Service Stations. (ITU List
VI)

d\) All of these.

014F- What publication/s should a GMDSS Operator consult regarding the
proper set-up and operation of vessel equipment?

a\) ITU Publications.

b\) The manufacturer\'s instruction manuals.

c\) Part 90 of the FCC Rules and Regulations.

d\) Code of Federal Regulations, Title 47, Part 80, Subpart W.

Key Topic #014 Answer Key: A: b) B: d) C: d) D: d) E: d) F: b).

KEY TOPIC #015: MAINTENANCE:

015A- Which of the following maintenance functions is not the
responsibility of the GMDSS Radio Operator?

a\) Visual inspection of equipment, including the antenna and associated
components.

b\) Perform on-the-air verification checks.

c\) Perform scheduled testing of the battery\'s charged condition.

d\) Aligning the power output stage for maximum power.

015B- When may a compulsory vessel not be allowed to leave port?

a\) When the vessel is in an over-carriage condition.

b\) When the vessel has arranged for both duplication of equipment AND
shore-based maintenance.

c\) When the vessel has replaced a required piece of GMDSS-related
equipment but its performance has not been verified or logged.

d\) When the vessel is carrying only two licensed GMDSS Radio Operators
and is capable of performing all required functions.

015C- Which statement is false regarding the maintenance of GMDSS
equipment at sea?

a\) The GMDSS maintainer may not be the person designated to have
primary responsibility for radio-communications during distress
incidents even if licensed as an operator.

b\) Ships must carry at least one person who qualifies as a GMDSS
maintainer for the maintenance and repair of equipment if the at-sea
maintenance option is selected.

c\) All at-sea maintenance and repairs must be performed by, or under
the supervision of a person holding a GMDSS Maintainer license.

d\) The GMDSS maintainer may be the person responsible for ensuring that
the watches are properly maintained and that the proper guard channels
and the vessel\'s position are entered into the DSC equipment.

015D- Which of the following service or maintenance functions may NOT be
performed by the holder of a GMDSS Radio Operator License?

a\) Reset tripped circuit breakers or replace defective fuses.

b\) Routine battery maintenance if used as part of the GMDSS station.

c\) Any adjustments or maintenance that may affect the proper operation
of the station.

d\) Replacement of consumable items such as paper, ribbons, etc.

015E- What are the conditions, under GMDSS, whereby a ship is NOT
allowed to depart from any port?

a\) The vessel is not capable of performing all required distress and
safety functions.

b\) The vessel is carrying more than the required number of qualified
GMDSS radio operators.

c\) The vessel has a temporary waiver of its radio license and Safety
Certificate.

d\) The vessel is not carrying a GMDSS radio maintainer, but has
provided for shoreside maintenance plus duplication of equipment if
required.

015F- What determines the spares and maintenance materials requirements
for the SITOR equipment under GMDSS?

a\) The recommendations of the manufacturer.

b\) FCC Part 80.

c\) IMO Circular \"Equipment Spares\".

d\) The GMDSS Maintainer\'s requirements.

Key Topic #015 Answer Key: A: d) B: c) C: a) D: c) E: a) F: a).

KEY TOPIC #016: LICENSE AND PERSONNEL REQUIREMENTS.

016A- Which of the following is the minimum license requirement of a
GMDSS Radio Operator?

a\) Holding the Marine Radio Operator Permit is a pre-requisite before
the GMDSS Radio Operator Endorsement can be obtained.

b\) Holding the General Radiotelephone Operator License with RADAR
endorsement is sufficient.

c\) Holding a valid GMDSS Radio Operator license is sufficient.

d\) Holding either the General Radiotelephone Operator License or the
First or Second Class Radiotelegraph license with GMDSS Radio
Maintainer\'s endorsement is sufficient.

016B- Which of the following statements concerning GMDSS Radio Operator
requirements is false?

a\) Each compulsory vessel must carry at least two licensed GMDSS Radio
Operators at all times while at sea.

b\) Each compulsory vessel must carry at least two licensed GMDSS Radio
Operators at all times while at sea and may elect to carry a GMDSS Radio
Maintainer as well.

c\) Communications involving safety of life at sea do not have to be
logged as long as the compulsory vessel was not involved in such
communications.

d\) While at sea, adjustments to, and the maintaining of, GMDSS
equipment may be performed by the GMDSS Radio Operator as long as the
work is supervised by an on-board licensed GMDSS Radio Maintainer.

016C- What is the minimum operator license required to perform or
supervise the performance of at-sea adjustments, servicing or
maintenance which may affect the proper operation of the GMDSS station?

a\) Marine Radio Operator Permit.

b\) General Radiotelephone Operator license and Radar endorsement.

c\) Designated maintainer possessing a GMDSS Radio Operator license.

d\) GMDSS Radio Maintainer\'s license.

016D- Which statement is false regarding the radio operator requirements
for a GMDSS-equipped ship station?

a\) One of the qualified GMDSS radio operators must be designated to
have primary responsibility for radio-communications during distress
incidents.

b\) A qualified GMDSS radio operator, and a qualified backup, must be
designated to perform distress, urgency and safety communications.

c\) Maintaining a record of all incidents connected with the
radio-communications service that appear to be of importance to safety
of life at sea is not required.

d\) While at sea, all adjustments or radio installations, servicing or
maintenance of such installations that may affect the proper operation
of the GMDSS station must be performed by, or under the supervision of,
a qualified GMDSS radio maintainer.

016E- What are the vessel equipment and personnel requirements of GMDSS?

a\) Two licensed GMDSS radio operators.

b\) Equipment carriage requirements.

c\) Distress alerting and response.

d\) All of these.

016F- What is the minimum requirement of a GMDSS radio operator?

a\) Marine Radio Operator Permit and GMDSS Endorsement.

b\) General Radiotelephone Operator license and Radar endorsement.

c\) GMDSS Radio Operator license.

d\) General Radiotelephone license or First or Second Class
Radiotelegraph license with GMDSS Radio Maintainer\'s endorsement.

Key Topic #016 Answer Key: A: c) B: c) C: d) D: c) E: d) F: c).

KEY TOPIC #017: RESERVE SOURCE OF ENERGY:

017A- Which statement is false regarding the GMDSS requirement for ship
sources of energy?

a\) At all times while the vessel is at sea, a sufficient supply of
electrical energy to operate the radio installations and charge any
batteries which may be part of the reserve source of energy is required.

b\) The reserve sources of energy need to supply independent MF and HF
radio installations at the same time.

c\) An uninterruptible power supply or other means of ensuring a
continuous supply of electrical power to all GMDSS equipment that could
be affected by normal variations and interruptions of ship\'s power is
required.

d\) If an uninterrupted input of information is required from the
ship\'s navigational or other equipment to a GMDSS radio station to
ensure its proper performance, a means must be provided to ensure such
continuous supply of information in the event of failure of the ship\'s
main or emergency source of energy.

017B- What is the meaning of "Reserve Source of Energy"?

a\) The supply of electrical energy sufficient to operate the radio
installations for the purpose of conducting distress and safety
communications in the event of failure of the ship\'s main and emergency
sources of electrical power.

b\) High caloric value items for lifeboat, per SOLAS regulations.

c\) Diesel fuel stored for the purpose of operating the powered survival
craft for a period equal to or exceeding the U.S.C.G. and SOLAS
requirements.

d\) None of these.

017C- What is the term which refers to the 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?

a\) Emergency power.

b\) Reserve source of energy.

c\) Ship\'s emergency diesel generator.

d\) Ship\'s standby generator.

017D- What are the characteristics of the Reserve Source of Energy under
GMDSS?

a\) Supplies independent HF and MF installations at the same time.

b\) Cannot be independent of the propelling power of the ship.

c\) Must be incorporated into the ship\'s electrical system.

d\) Must be independent of the ship\'s electrical system when the RSE is
needed to supply power to the GMDSS equipment.

017E- What is the requirement for emergency and reserve power in GMDSS
radio installations?

a\) An emergency power source for radio communications is not required
if a vessel has proper reserve power (batteries).

b\) A reserve power source is not required for radio communications.

c\) 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.

d\) All newly constructed ships under GMDSS must have both emergency and
reserve power sources for radio communications.

017F- Which of the following terms is defined as a back-up power source
that provides power to radio installations for the purpose of conducting
distress and safety communications when the vessel\'s main and emergency
generators cannot?

a\) Reserve Source of Energy (RSE).

b\) Emergency Diesel Generator (EDG).

c\) Reserve Source of Diesel Power (RSDP).

d\) Emergency Back-up Generator (EBG).

Key Topic #017 Answer Key: A: b) B: a) C: b) D: d) E: d) F: a).

KEY TOPIC #018: EQUIPMENT TESTING:

018A- Under GMDSS, a compulsory VHF-DSC radiotelephone installation must
be tested at what minimum intervals at sea?

a\) Daily.

b\) Annually, by a representative of the FCC.

c\) At the annual SOLAS inspection.

d\) Monthly.

018B- Testing of a compulsory radiotelephone station should be done?

a\) Into an artificial antenna.

b\) May be accomplished by using the radiotelephone for normal business.

c\) On 2182 kHz and must be heard clearly under normal conditions at a
range of 150 nautical miles.

d\) Either a) or b).

018C- DSC controllers have a facility that allows the unit to be
routinely tested without the associated transmitter being activated. The
unit should be tested while underway at least?

a\) Once a Day.

b\) Once a week.

c\) Twice a week.

d\) Once a month.

018D- At sea, all required equipment (other than Survival Craft
Equipment) must be proven operational by?

a\) Daily testing.

b\) By either a) or c).

c\) Operational use of the equipment.

d\) Testing at least every 48 hours.

018E- The best way to test the MF-HF NBDP system is?

a\) Make a radiotelephone call to a Coast Station.

b\) Initiate an ARQ call to demonstrate that the transmitter and antenna
are working.

c\) Initiate an FEC call to demonstrate that the transmitter and antenna
are working.

d\) Initiate an ARQ call to a Coast Station and wait for the automatic
exchange of answerbacks.

018F- The best way to test the Inmarsat-C terminal is?

a\) Send a message to a shore terminal and wait for confirmation.

b\) Compose and send a brief message to your own Inmarsat-C terminal.

c\) Send a message to another ship terminal.

d\) If the send light flashes, proper operation has been confirmed.

Key Topic #018 Answer Key: A: a) B: d) C: a) D: b) E: d) F: b).

KEY TOPIC #019: WATCHKEEPING:

019A- A vessel certified for service in Sea Area A3 is required to
maintain a watch on?

a\) VHF Channel 70.

b\) MF Frequency 2187.5.

c\) HF on 8414.5 kHz and one other HF DSC frequency.

d\) All of these.

019B- A vessel certified for service in Sea Area A-2 is required to
maintain watch on?

a\) 2174.5 kHz

b\) 2187.5 kHz

c\) 2182.0 kHz

d\) 2738.0 kHz

019C- What are the mandatory DSC watchkeeping bands/channels?

a\) VHF Ch-70, 2 MHz MF DSC, 6 MHz DSC and 1 other HF DSC.

b\) 2 MHz MF DSC, 8 MHz DSC, VHF Ch-16 and 1 other HF DSC.

c\) 8 MHz HF DSC, 1 other HF DSC, 2 MHz MF DSC and VHF Ch-70.

d\) None of the above.

019D- Proper watchkeeping includes the following:

a\) All required frequencies are being monitored in the proper mode.

b\) After silencing an alarm all displays and/or printouts are read.

c\) Notifying the Master of any distress alerts.

d\) All of the above.

019E- Proper watchkeeping includes the following:

a\) Understanding the GMDSS console\'s normal operational indicators.

b\) Maintaining a proper GMDSS radio station log.

c\) Responding to and comprehending alarms.

d\) All of the above.

019F- Which is true concerning a required watch on VHF Ch-16.

a\) It is compulsory at all times while at sea until Feb 2005 unless the
vessel is in a VTS system.

b\) When a vessel is in an A1 sea area and subject to the
Bridge-to-Bridge act and in a VTS system, a watch is not required on
Ch-16 provided the vessel monitors both Ch-13 and VTS channel.

c\) It is always compulsory in sea areas A2, A3 and A4.

d\) All of the above.

Key Topic #019 Answer Key: A: d) B: b) C: c) D: d) E: d) F: d).

KEY TOPIC #20: LOGEEPING:

020A-Which of the following statements are true?

a\) GMDSS Radio Logs are required to contain entries pertaining to all
incidents connected with the radio-communications service that appear to
be of importance to the safety of life at sea.

b\) All distress communications must be entered in the GMDSS radio log.

c\) Both of the above.

d\) None of the above.

020B-Which of the following statements are true?

a\) Key letters or abbreviations may not be used in GMDSS Radio Logbooks
under any circumstances.

b\) Urgent communications do not need to be entered in the GMDSS radio
log.

c\) Both of the above.

d\) None of the above.

020C- Where should the GMDSS radio log be kept on board ship?

a\) Captain\'s office.

b\) Sea cabin.

c\) At the GMDSS operating position.

d\) Anywhere on board the vessel.

020D- How long must the radio log be retained on board before sending it
to the shoreside licensee?

a\) At least one year after the last entry.

b\) At least two years after the last entry.

c\) At least 90 days after the last entry.

d\) At least 30 days after the last entry.

020E- How long must the radio log be archived by the licensee?

a\) Two years if there is no distress or urgent entries.

b\) Three years if there are any distress or urgent entries.

c\) Both of the above.

d\) None of the above.

020F- Which of the following logkeeping statements is true?

a\) Entries relating to pre-voyage, pre-departure and daily tests are
required.

b\) Both a) and c).

c\) All distress, urgent and safety communications must be logged.

d\) Routine daily MF-HF and Inmarsat-C transmissions do not have to be
logged.

Key Topic #020 Answer Key: A: c) B: d) C: c) D: d) E: c) F: b).

KEY TOPIC #021: ALPHABETICAL CALL SIGNS, SELCALLS

021A- A typical call sign for a large container ship under U. S. flag
would be:

a\) WBX1469

b\) KBZY

c\) NADN

d\) KPH

021B- What would the number 1090 indicate?

a\) A ship MMSI number.

b\) A coast station MMSI number.

c\) A coast station selcall number.

d\) A ship station selcall number.

021C- Which one of the following is a ship station selcall?

a\) 11243

b\) 1104

c\) 1502352

d\) 0230364973

021D- Which of the following is the call sign for a U.S.C.G. coast
station?

a\) NERK

b\) KPH

c\) NMN

d\) WCC

021E- What type of station would be assigned the call sign WAB2174?

a\) Container ship.

b\) Passenger ship.

c\) Tug boat.

d\) Bulk Tanker.

021F- What number will a ship station use to identify itself using
SITOR?

a\) Four digit selcall.

b\) Five digit selcall or 9 digit MMSI number.

c\) 7 digit Inmarsat-A I. D. number.

d\) 9 digit Inmarsat-C I.D. number.

Key Topic #021 Answer Key: A: b) B: c) C: a) D: c) E: c) F: b).

KEY TOPIC #022: MMSI, MID, SHIP:

022A- What is the MID?

a\) Mobile Identification Number.

b\) Maritime Identification Digits.

c\) Marine Indemnity Directory.

d\) Mobile Interference Digits.

022B- How many digits are in the MID (Maritime Identification Digits)?

a\) 7

b\) 9

c\) 3

d\) 10

022C- What does the MID (Maritime Identification Digits) signify?

a\) Port of registry.

b\) Nationality.

c\) Gross tonnage.

d\) Passenger vessel.

022D- Which of the following numbers indicates a U.S. flag ship station?

a\) 036627934

b\) 243537672

c\) 338426791

d\) 003382315

022E- Which of the following MMSI numbers indicates a U.S. flag ship
station?

a\) 430326890

b\) 303236824

c\) 033609991

d\) 257326819

022F- Which of the following numbers indicates a ship station MMSI?

a\) 003372694

b\) 623944326

c\) 030356328

d\) 3384672

Key Topic #022 Answer Key: A: b) B: c) C: b) D: c) E: b) F: b).

KEY TOPIC #023: MMSI, GROUP, COAST STATION:

023A- A DSC call is received from a station with a MMSI number of
003669991. Which of the following types of stations is it from?

a\) A vessel operating in Sea Area A3.

b\) A group ship station.

c\) A U.S. coast station.

d\) An Intercoastal vessel.

023B- A valid MMSI number for a DSC call to a specific group of vessels
is:

a\) 003664523

b\) 030327931

c\) 338462941

d\) 003036483

023C- MMSI 030346239 indicates what?

a\) A group ship MMSI issued in Hawaii.

b\) Coast station on Atlantic Coast.

c\) A group ship MMSI issued in Alaska.

d\) Ship station registered from San Francisco.

023D- 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.

023E- Which of the following statements concerning MMSI is true?

a\) All Coast Station MMSI must begin with 2 zeros.

b\) The first 3 digits of a ship MMSI comprise the MID.

c\) A group call must begin with a single zero followed by the MID.

d\) All of the above.

023F- Which of the following statements concerning MMSI is true?

a\) All ship station MMSI must begin with a single zero and include the
MID.

b\) All group station MMSI must begin with the MID.

c\) All Coast Station MMSI must be 9 digits and begin with 2 zeros
followed by the MID.

d\) None of the above.

Key Topic #023 Answer Key: A: c) B: b) C: c) D: b) E: d) F: c).

KEY TOPIC #024: Inmarsat Mobile Numbers for A and B Terminals:

024A- Which of the following would indicate an Inmarsat-A terminal?

a\) A 9 digit number beginning with the MID.

b\) A 7 digit number.

c\) A 9 digit number always starting with 3.

d\) A 9 digit number always starting with 4.

024B- Which of the following would indicate an Inmarsat-A terminal?

a\) 003662517

b\) 436682011

c\) 325468325

d\) 1500241

024C- Which of the following would indicate an Inmarsat-A terminal?

a\) 150036

b\) 366832922

c\) 430364290

d\) 1502460

024D- Which of the following would indicate an Inmarsat-B terminal?

a\) 003668202

b\) 436682433

c\) 325468263

d\) 1500270

024E- Which of the following would indicate an Inmarsat-B terminal?

a\) 150036

b\) 366632824

c\) 430363275

d\) 1502460

024F- Which of the following would indicate an Inmarsat-B terminal?

a\) A 9 digit number beginning with the MID.

b\) A 7 digit number.

c\) A 9 digit number always starting with 3.

d\) A 9 digit number always starting with 4.

Key Topic #024 Answer Key: A: b) B: d) C: d) D: c) E: b) F: c).

KEY TOPIC #025: Inmarsat Mobile Numbers for C terminals:

025A- You receive a telex with the senders I.D. of 433863491. What type
of terminal sent this message to your vessel?

a\) Inmarsat-C.

b\) Land telex terminal.

c\) Inmarsat-B.

d\) Inmarsat-A.

025B- You receive a telex with the senders I.D. of 1502340. What type of
terminal sent this message to your vessel?

a\) Inmarsat-C.

b\) Land telex terminal.

c\) Inmarsat-B.

d\) Inmarsat-A.

025C- Which of the following would indicate an Inmarsat-C terminal?

a\) 003668202

b\) 436682433

c\) 325468263

d\) 1500270

025D- Which of the following would indicate an Inmarsat-C terminal?

a\) 150036

b\) 366294824

c\) 430346275

d\) 1502690

025E- Which of the following would indicate an Inmarsat-C terminal?

a\) 003662517

b\) 436682011

c\) 325468325

d\) 1500241

025F- Which of the following would indicate an Inmarsat-C terminal?

a\) A 9 digit number beginning with the MID.

b\) A 7 digit number.

c\) A 9 digit number always starting with 3.

d\) A 9 digit number always starting with 4.

Key Topic #025 Answer Key: A: a) B: d) C: b) D: c) E: b) F: d).

KEY TOPIC #026: DSC FORMAT, INFO SENT:

026A- What is first sent by all MF-HF DSC transmissions?

a\) Distress alert character.

b\) A string of dots to stop the scan receiver.

c\) Priority of transmission character.

d\) Ship\'s position.

026B- VHF-DSC transmissions are encoded and transmitted in what emission
mode?

a\) H3E

b\) F1B/J2B

c\) A3E

d\) None of the above.

026C- When sending a DSC call:

a\) Vessel's position will automatically be sent.

b\) Vessel's position will automatically be sent if the vessel is
sending a "Distress Hot Key" alert.

c\) Vessel's MMSI will indicate its ocean region.

d\) None of these.

026D- DSC transmissions are encoded:

a\) Using J3E mode for proper follow-on communications.

b\) Using a special digital format.

c\) Using F1B mode to ensure proper reception.

d\) Using J2B mode for correct transmission.

026E- DSC transmissions are received:

a\) Using voice or telex modes as appropriate.

b\) Using J3E or H3E modes as appropriate.

c\) Using digital decoding by the DSC controller.

d\) Using F1B and/or J2B decoding by the transceiver.

026F- Properly formatted DSC transmissions can request which of the
following emissions for follow on communications?

a\) J3E/H3E telex emissions.

b\) F1B/J2B voice emissions.

c\) J3E/H3E voice emissions.

d\) None of the above.

Key Topic #026 Answer Key: A: b) B: d) C: b) D: b) E: c) F: c).

KEY TOPIC #027: DSC OPERATIONS:

027A- Which of the following statements concerning DSC equipment is
true?

a\) The GMDSS Radio Operator is responsible for properly selecting HF
DSC guard channels.

b\) All equipment must be type accepted.

c\) The vessel\'s navigational position must be updated, either
automatically or manually, no less often that every four (4) hours.

d\) All of the above.

027B- What is the action that a GMDSS Radio Operator should take when a
DSC distress alert is received?

a\) No action is necessary, as the DSC control unit will automatically
switch to the NBDP follow-on communications frequency.

b\) The Operator should immediately set continuous watch on the
radiotelephone frequency that is associated with frequency band on which
the distress alert was received.

c\) The Operator should immediately set continuous watch on VHF channel
70.

d\) The Operator should immediately set continuous watch on the NBDP
frequency that is associated with frequency band on which the distress
alert was received.

027C- What does the DSC control unit do if the GMDSS Radio Operator
fails to insert updated information when initiating a DSC distress
alert?

a\) It will abort the transmission and set off an audible alarm that
must be manually reset.

b\) It will initiate the DSC distress alert but, as no information will
be transmitted, rescue personnel will not be able to identify the
vessel, its position, or its situation.

c\) It will initiate the DSC distress alert, and default information
will automatically be transmitted.

d\) It will initiate the DSC distress alert, but any station receiving
it will have to establish contact with the distressed vessel to
determine its identity, position, and situation.

027D- A DSC Distress alert:

a\) Must always be sent on VHF Ch-70.

b\) Must always be sent on MF 2 MHz plus one other HF DSC frequency.

c\) Will always be sent on one or more of the DSC distress frequencies.

d\) Must always be sent on VHF Ch-70, then 2 MHz MF then 8 MHz HF.

027E- In all cases, the transmit frequency of a MF/HF console DSC
distress alert:

a\) Will go out first on 2187.5 kHz.

b\) Will go out on 8 MHz and 2 MHz and one other DSC distress frequency.

c\) It depends upon operator DSC Call set up entries.

d\) None of the above.

027F- DSC relays of Distress Alerts by vessels:

a\) Should be done for all Distress Alerts.

b\) Should be transmitted to ships involved in Distress traffic.

c\) Should be avoided, however after repeated alerts, should be relayed
to a Coast Station nearest the distress incident.

d\) Are the best means to provide for a relay of Distress
communications.

Key Topic #027 Answer Key: A: d) B: b) C: c) D: c) E: c) F: c).

KEY TOPIC #028: DSC FREQUENCIES:

028A- Which of the following is not a DSC watch frequency?

a\) 2187.5 kHz.

b\) 6312 kHz.

c\) 2182 kHz.

d\) 12577 kHz.

028B- Which of the following channels and modes should be used when
initiating a distress alert transmission?

a\) Ch-6 DSC.

b\) Ch-6 Radiotelephony.

c\) Ch-13 Radiotelephony and Ch-16 DSC.

d\) Ch-70 DSC.

028C- How many total frequencies are available for DSC distress
alerting?

a\) One (1).

b\) Two (2).

c\) Five (5).

d\) Seven (7).

028D- Which of the following watches must a compulsory vessel maintain
when sailing in Sea Area A1?

a\) A continuous DSC watch on 8414.5 kHz plus one other HF DSC
frequency.

b\) A continuous DSC watch on 2187.5 kHz.

c\) A continuous DSC watch on Ch-16.

d\) A continuous DSC watch on Ch-70.

028E- Which of the following are the MF/HF DSC Distress watch
frequencies

a\) 2177.5, 4210.0, 6314.0, 8416.5 12579.0, 16806.5

b\) 2182.0, 4125.0, 6215.0, 8291.0, 12290.0, 16420.0

c\) 2187.5, 4207.5, 6312.0, 8414.5, 12577.0, 16804.5

d\) 2174.5, 4177.5, 6268.0, 8376.5, 12520.0, 16695.0

028F- How many HF DSC distress watch channels must be guarded by a
compulsory vessel underway.

a\) 1

b\) 2

c\) 3

d\) 4

Key Topic #028 Answer Key: A: c) B: d) C: d) D: d) E: c) F: b).

KEY TOPIC #029: SENDING A DISTRESS ALERT:

029A- What is usually the first step for a GMDSS Radio Operator to take
when initiating a distress priority message via Inmarsat?

a\) By dialing the correct code on the telephone remote unit.

b\) By pressing a \"Distress Button\" or \"Distress Hot Key(s)\" on the
equipment.

c\) By contacting the CES operator and announcing a distress condition
is in existence.

d\) By contacting the CES operator using the radiotelephone distress
procedure \"Mayday\"\... etc.

029B- Which of the following statements is true regarding distress
alerting under GMDSS?

a\) The distress alert must identify the station in distress and its
position and may additionally include information regarding the nature
of the distress, the type of assistance required, the course and speed
of the mobile unit and the time this information was recorded.

b\) Ship to shore distress alerts are used to alert other ships in port
of navigational hazards.

c\) Ship-to-ship distress alerts are used to alert other ships in the
vicinity of navigational hazards and bad weather.

d\) The vessel nearest to the emergency must notify the Coast Guard
before leaving the vicinity.

029C- 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.

029D- Repetition of a DSC Distress call is normally automatic if not
acknowledged after a delay of:

a\) 1 - 2 minutes.

b\) 2- 5 minutes.

c\) 3.5 - 4.5 minutes.

d\) Not at all.

029E- A MF/HF DSC Distress call:

a\) Will send the minimal necessary information using the \"Distress
Button\" or \"Distress Hot Key\"

b\) Contains all the information normally of interest in on-scene
Distress communications.

c\) Will send a more detailed Distress format if time permits and
operator data entries are correctly performed.

d\) Both a) & c) are true.

029F- Which statement regarding an MF/HF DSC Distress call is true:

a\) Follow on communications should be presumed to take place on the
telex 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 originating the Distress Alert.

d\) Both b) and c) are true.

Key Topic #029 Answer Key: A: b) B: a) C: c) D: c) E: d) F: d).

KEYTOPIC #030: FOLLOW-ON VOICE TRANSMISSION:

030A- You send a VHF-DSC distress alert. What channel do you use for the
follow-on voice transmission?

a\) Ch-12

b\) Ch-70

c\) Ch-13

d\) Ch-16

030B- You send a MF-DSC distress alert. What frequency do you use for
the follow-on voice transmission?

a\) 2760 kHz

b\) 2187.5 kHz

c\) 2182 kHz

d\) 2174.5 kHz

030C- You send a HF-DSC alert on 8414.5 kHz. What frequency do you use
for the voice transmission?

a\) 8376.5 kHz

b\) 8291.0 kHz

c\) 8401.5 kHz

d\) 8201.0 kHz

030D- 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 Mayday Position.

b\) Mayday 3x this is Ship\'s Name/Call Sign 3x Distress category.

c\) Both of the above.

d\) None of the above.

030E- What information should be included in a distress follow on voice
transmission?

a\) Ship\'s Name and Call Sign.

b\) Ship\'s position.

c\) Ship\'s MMSI number.

d\) All of the above.

030F- What information should be included in a distress follow on voice
transmission?

a\) Follow on working frequency.

b\) ETA at next port.

c\) None of the above.

d\) Both of the above.

Key Topic #030 Answer Key: A: d) B: c) C: b) D: d) E: d) F: c).

KEYTOPIC #031: RESPONSE TO A DISTRESS ALERT:

031A- Which statement is true regarding the receipt and acknowledgement
of distress alerts by ship stations and ship earth stations (SES)?

a\) A ship or ship earth station that receives a distress alert must, as
soon as possible, inform the Master or person responsible for the ship
of the contents of the distress alert.

b\) Ship stations in receipt of distress alert should not defer
acknowledgement for a short interval, so that receipt may be
acknowledged by the coast station.

c\) Ship stations operating in areas where reliable communications with
a coast station are not practicable, that receive a distress alert from
a vessel in their vicinity, must either acknowledge receipt of and
inform the Rescue Coordination Center or, if received by HF, wait for 3
minutes for a coast station acknowledgement before performing any relay
of the distress alert.

d\) Alerts concerning navigational hazards are second only to safety
traffic.

031B- What does the acronym \'EOS\" indicate in the received message?

a\) Error Of Sequence.

b\) End Of Sequence.

c\) End Of Signals.

d\) Equal Operating Signals.

031C- 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 DSC alerting frequency in the band of frequencies
the alert was received.

b\) Set watch on the radiotelephone distress and safety frequency
associated with the distress and safety calling frequency on which the
distress 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.

031D- What does the acronym \"ECC\" indicate in the received message?

a\) Every Cipher Counted.

b\) Error Cannot Confirm.

c\) Error Check Character.

d\) Even Characters Counted.

031E- What action should be taken on receipt of a distress alert?

a\) Read the display screen and/or printout.

b\) Silence the alarm.

c\) Listen for any follow on voice/telex transmission on the appropriate
frequency.

d\) All of the above.

031F- What action should be taken if a distress alert is received on the
12 MHz DSC frequency?

a\) Use DSC to acknowledge the alert using the 12 MHz DSC frequency.

b\) Set the receiver to 12290.0 kHz J3E.

c\) Do nothing. Ship is too far away to render assistance.

d\) Set the receiver to 12520.0 kHz F1B.

Key Topic #031 Answer Key: A: a) B: b) C: b) D: c) E: d) F: b).

KEYTOPIC #032: DISTRESS RELAYS:

032A- Your ship received a distress relay from the U.S. Coast Guard on
DSC freq. 2187.5 kHz. You would acknowledge by radiotelephony on what
frequency?

a\) 4207.5 kHz

b\) 8290.0 kHz

c\) 2182.0 kHz

d\) 6312.0 kHz

032B- Your ship received a Distress relay on DSC VHF channel 70, on what
channel would you reply?

a\) Ch-70

b\) Ch-06

c\) Ch-13

d\) Ch-16

032C- Under what conditions would you 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 is observed.

c\) Answers a) and b) are both possible.

d\) You should never relay such an alert \-- the Coast Station & RCC
will do that.

032D- The relay of DSC Distress Alerts:

a\) Has completely overburdened the GMDSS system with improperly
formatted or inappropriately relayed DSC calls.

b\) Was originally an intended function of the GMDSS system.

c\) Is no longer the preferred method for passing Distress message
traffic to an RCC or Coast Station.

d\) All of the above

032E- Transmission of a distress alert by a station not in itself in
distress should 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\) In some cases, all of the preceding situations may justify a
Distress Alert relay.

032F- Relays of Distress Alerts using DSC may still be done. However, it
is now recommended that such relays be done:

a\) Only by Inmarsat-C telex with Distress Priority.

b\) Only by Inmarsat-A voice or telex with Distress priority.

c\) Preferably by MF/HF voice or telex directly to the RCC.

d\) By any of the above methods which will effectively provide Distress
communications to an RCC or Coast station without further activations of
other Mobile Units\' DSC controllers.

Key Topic #032 Answer Key: A: c) B: d) C: c) D: d) E: d) F: d).

KEYTOPIC #033: ACTION TO TAKE AFTER SENDING A FALSE DISTRESS ALERT:

033A-What action should you take after sending a false distress alert on
VHF?

a\) Send a DSC cancellation message on Ch-70.

b\) Make a voice announcement to cancel the alert on Ch-16.

c\) Make a voice announcement to cancel the alert on Ch-13.

d\) Make a voice announcement to cancel the alert on Ch-22A.

033B- What action should you take after sending a false distress alert
on MF?

a\) Make a voice announcement to cancel the alert on 2187.5 kHz.

b\) Make a voice announcement to cancel the alert on 2174.5 kHz.

c\) Make a voice announcement to cancel the alert on 2182.0 kHz.

d\) Send another DSC alert and follow on with voice on 2182.0 kHz.

033C-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\) Send a DSC alert on all 7 DSC frequencies and follow on voice on
2174.5 kHz.

d\) Make a voice announcement to cancel the alert on 2182.0 kHz.

033D- What action should you take after sending a false distress alert
on 8 MHz?

a\) Make an \"ALL SHIPS\" call on all 5 H.F. telex channels canceling
the alert.

b\) Make an \"ALL SHIPS\" call on 8291.0 kHz canceling the alert.

c\) Make a \"MAYDAY\" call on 8414.5 kHz canceling the alert.

d\) Make an \"URGENT\" call on 8614.0 kHz canceling the alert.

033E- What action should you take after sending a false distress alert
on 12577.0 kHz?

a\) No action is necessary.

b\) Make an \"ALL SHIPS\" call on all 5 H.F. telex frequencies canceling
the alert.

c\) Make an \"ALL SHIPS\" call on the associated 12 MHz J3E frequency
canceling the alert.

d\) Send a message to the nearest RCC via Inmarsat canceling the alert.

033F- What action should you take after sending a false distress alert
on Inmarsat-C?

a\) Press the \"Distress Hot Keys" then press the \"cancel\" key.

b\) Select \"Transmit\" menu and send a cancel message via the CES used
for the distress alert.

c\) Both of the above.

d\) None of the above.

Key Topic #033 Answer Key: A: b) B: c) C: d) D: b) E: c) F: b).

KEY TOPIC #034: RADIO SILENCE & RESUMPTION OF NORMAL TRAFFIC.

034A- What is the fundamental purpose for imposing radio silence?

a\) To ensure that interference to proprietary communications is
minimized.

b\) To ensure that only voice communications can be effected on the
distress frequency or channel.

c\) To ensure that a distressed vessel will have a \"window\" twice each
hour for transmitting routine messages.

d\) To ensure that interference on a particular frequency or channel for
communications concerning emergency traffic is minimized.

034B- 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\) 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.

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

034C- What is meant by the term \"radio silence\"?

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.

034D- How is \"radio silence\" imposed?

a\) By the On Scene Coordinator (OSC).

b\) By the Coast Earth Station (CES) controlling the distress
communications on that frequency.

c\) By the nearest Public Correspondence Coast Station.

d\) By the vessel first responding to the distress call.

034E- How are normal working conditions restored on a narrow band direct
printing (NBDP) frequency on which radio silence had been imposed?

a\) The RCC that imposed the radio silence must transmit a NBDP message
stating \"SILENCE FINI\".

b\) The CES that imposed the radio silence must transmit a NBDP message
stating \"SILENCE FINI\".

c\) 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\".

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\".

034F- How are normal working conditions restored after radio silence has
been imposed?

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

b\) The Coast Earth Station (CES) 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\) None of the above.

Key Topic #034 Answer Key: A: d) B: c) C: a) D: a) E: a) F: a).

KEY TOPIC #035- URGENT TRAFFIC:

035A- The Radiotelephone Urgency signal is:

a\) Mayday

b\) Pan Pan

c\) Securite

d\) Seelonce Feenee

035B- Which of the following situations would normally use the Urgency
priority?

a\) A crewmember over the side.

b\) A serious medical situation involving a crewmember.

c\) A cargo shift or weather situation considered to be of greater
hazard than would justify a SAFETY priority designation.

d\) Answers b) and c).

035C- Which of the following situations would normally use the Urgency
priority?

a\) Leaking oil from a minor tank fracture.

b\) Treatment of crewmember breaking a leg in a cargo hold.

c\) A fire in the generator flat/spaces.

d\) Answers a) and b) are both possible.

035D- Which of the following situations would normally use the urgency
priority?

a\) A crewmember over the side.

b\) A serious medical situation involving a crewmember.

c\) Both a and b

d\) Scenarios concerning the Safety of navigation or important
meteorological warnings.

035E- The Urgent Priority should be used for:

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 .

035F- If the Watch Officer hears \"PAN PAN\" spoken 3 times it means:

a\) A navigation or important meteorological warning should follow.

b\) The station is preparing to transmit an URGENT message possibly
concerning the safety of a mobile unit or person.

c\) A Mobile unit is in need of immediate assistance.

d\) None of the above.

Key Topic #035 Answer Key: A: b) B: d) C: b) D: b) E: c) F: b).

KEY TOPIC #036- SAFETY TRAFFIC:

036A- When the GMDSS Radio Operator on watch hears \"SECURITE\" spoken
three times, he can expect to receive the following information:

a\) Message concerning the Safety of navigation or important
meteorological warnings.

b\) Safety of vessel or person is in jeopardy.

c\) Vessel in need of immediate assistance.

d\) Coast Station Traffic list.

036B- 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 .

036C- Which of the following situations would normally use the Safety
priority?

a\) Loss of 5 containers with lashing gear over the side.

b\) Treatment of crewmember breaking a leg in a cargo hold.

c\) A fire in the generator flat/spaces.

d\) Answers a) and b) are both possible.

036D- Which of the following situations would normally use the Safety
priority?

a\) A crewmember over the side.

b\) A serious medical situation involving a crewmember.

c\) Both a) and b).

d\) Scenarios concerning the Safety of navigation or important
meteorological warnings.

036E- 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.

036F- Which of the following situations would normally use the Safety
priority?

a\) A crewmember over the side.

b\) A serious medical situation involving a crewmember.

c\) A scenario concerning an important navigational or meteorological
warning.

d\) All of the above.

Key Topic #036 Answer Key: A: a) B: b) C: a) D: d) E: a) F: c).

KEY TOPIC #037- FREQUENCIES:

037A- Which of the following frequencies and modes is allocated for
distress alerting in GMDSS?

a\) 406 MHz via EPIRB.

b\) 1626.5-1645.5 MHz via Inmarsat.

c\) Channel 70 DSC plus six (6) MF/HF DSC frequencies.

d\) All of the above.

037B- Which of the following frequencies is normally used for distress
and safety communications?

a\) 490 kHz

b\) 518 kHz

c\) 4209.5 kHz

d\) 2174.5 kHz

037C- Which channel is designated for GMDSS Digital Selective Calling?

a\) Ch-06

b\) Ch-13

c\) Ch-16

d\) Ch-70

037D- How many MF frequencies are available for DSC distress related
calls?

a\) One

b\) Two

c\) Four

d\) Five

037E- How many HF frequencies are available for DSC distress related
calls?

a\) One

b\) Two

c\) Four

d\) Five

037F- How many frequencies are available under GMDSS for DSC
distress-related calls?

a\) Two

b\) Four

c\) Five

d\) Seven

Key Topic #037 Answer Key: A: d) B: d) C: d) D: a) E: d) F: d).

KEY TOPIC #038- OTHER PROCEDURES.

038A- Which of the following steps should be taken, if possible, when
the vessel must be abandoned because of a distress situation?

a\) Alert the U.S. Coast Guard by using the survival craft\'s portable
INMARSAT unit.

b\) Program the SART and EPIRB to transmit the vessel\'s location and
situation.

c\) Place the SART and EPIRB in the \"on\" position and secure them to
the survival craft.

d\) No additional steps are needed as the SART and EPIRB will both
automatically float free and operate properly.

038B- 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\) Switch off EPIRB and SART manually.

b\) Transmit distress call by HF/MF/VHF DSC or Inmarsat.

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

d\) Transmit distress call by activating the radiotelegraph automatic
alarm signal.

038C- DSC is used primarily to:

a\) Receive weather warnings, navigational notices and other marine
safety information.

b\) Provide routine communications with the ship owner.

c\) Transmit and receive distress, urgent and safety alerts to and from
other ships and shore stations via radio.

d\) Report ship\'s position to search-and-rescue authorities via
satellite.

038D- GMDSS vessels equipped for 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\) When directed to do so by a cognizant rescue authority.

d\) At all times when underway.

038E- Which statement is true regarding distress communications under
GMDSS?

a\) Distress communications by NBDP should be in the ARQ mode when in
communications with the Coast Guard or other coast stations.

b\) The Rescue Coordination Center (RCC) is responsible for controlling
a search and rescue operation and will also coordinate the distress
traffic relating to the incident.

c\) The Rescue Coordination Center may appoint another station to
coordinate distress traffic relating to the incident.

d\) All of these.

038F- When operating in coastal waters (sea area A1), a GMDSS-equipped
vessel must:

a\) Maintain a continuous DSC watch on 8514.5 kHz.

b\) Maintain a continuous aural watch on 2182 kHz.

c\) Maintain a continuous DSC watch on VHF channel 16.

d\) Maintain a continuous DSC watch on VHF channel 70.

Key Topic #038 Answer Key: A: c) B: b) C: c) D: d) E: d) F: d).

KEY TOPIC #039: SART: ACTIVATION & SURVIVAL CRAFT OPERATIONS:

039A- What is the purpose of the SART\'s audible tone alarm?

a\) It informs survivors that assistance may be nearby.

b\) It informs survivors when the battery\'s charge condition has
weakened.

c\) It informs survivors when the SART switches to the \"standby\" mode.

d\) It informs survivors that a nearby vessel is signaling on DSC.

039B- What indication is given to the personnel of survival craft of the
approach of another vessel?

a\) The SART will provide a visual or audible indication of
interrogation by a 3-cm radar.

b\) The Satellite EPIRB will emit an audible signal.

c\) The VHF portable radio will emit an audible alarm signal on 156.525
MHz.

d\) The VHF portable will provide a visual indication.

039C- How can a SART\'s effective range be maximized?

a\) The SART should be placed in water immediately upon activation.

b\) The SART should be held as high as possible.

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.

039D- In a lifeboat or liferaft, what is a method of maximizing the
effectiveness of an SART?

a\) Place the SART into the sea as soon as possible to begin
transmitting.

b\) Hold or mount the unit as high as possible.

c\) Extend the length of the transmitting antenna.

d\) Replace the internal battery with the AC power adapter.

039E- At what point does a SART begin transmitting?

a\) It immediately begins radiating when placed in the \"on\" position.

b\) It must be manually activated.

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

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

039F- What causes the SART to begin a transmission?

a\) When activated manually, it begins radiating immediately.

b\) It is either manually or water activated before radiating.

c\) After being activated the SART responds to radar interrogation.

d\) It begins radiating only when keyed by the operator.

Key Topic #039 Answer Key: A: a) B: a) C: b) D: b) E: c) F: c).

KEY TOPIC #040: SART: SAR PROCEDURES & RADAR PRESENTATION:

040A- How does the searching vessel\'s radar interrogate a survival
craft SART?

a\) Activate the IFF interrogation system.

b\) The SART responds automatically when it detects the search craft or
other vessels\' X-Band radar signal.

c\) Maintain watch on VHF-FM Ch-70 for the SART\'s unique identifier.

d\) The SART responds automatically when it detects the search craft or
other vessel\'s 3.5 GHz radar signal.

040B- What does a SART signal sound or look like?

a\) It transmits \"SOS\" and the vessel\'s name and position in slow
speed Morse Code.

b\) It will appear on a radar unit\'s PPI as a line of dots radiating
outward with the innermost dot indicating the SART\'s position.

c\) It will appear on a radar unit\'s PPI as a line of dots radiating
outward with the outermost dot indicating the SART\'s position.

d\) None of the above.

040C- How can rescue personnel detect that a SART is transmitting in the
immediate vicinity?

a\) The SART\'s dots on the PPI will begin arcing and eventually become
concentric circles.

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

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

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

040D- What signal is detected as originating from an SART?

a\) The Morse code distress series S-O-S repeated three times followed
by DE and the vessel\'s call sign.

b\) A line of dots on a radar screen outward from the SART\'s position
along its line of bearing.

c\) A line of dots on a radar screen inward from the SART\'s position to
its own ship along its line of bearing.

d\) None of these.

040E- How can vessel personnel detect the operation of a SART in its
vicinity?

a\) A unique radar signal consisting of a 12 dots radiating outward from
a SART\'s position along its line of bearing.

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

c\) A unique two-tone alarm signal heard upon the automatic un-muting of
the 2182 kHz radiotelephone automatic watch receiver.

d\) The SART signal appears as a target which comes and goes; the effect
of heavy swells on an SART.

040F- How should the signal from a Search And Rescue Radar Transponder
appear on a radar display?

a\) A series of dashes.

b\) A series of spirals all originating from the range and bearing of
the SART.

c\) A series of 12 equally spaced dots.

d\) A series of twenty dashes.

Key Topic #040 Answer Key: A: b) B: b) C: a) D: b) E: a) F: c).

KEY TOPIC #041: SART: FREQUENCY & OPERATIONS:

041A- In which frequency band does a search and rescue transponder
operate?

a\) 3 GHz

b\) 9 GHz

c\) S-band

d\) 406 MHz

041B- Which of the following would most likely prevent a SART\'s signal
from being detected?

a\) Signal absorption by the ionosphere.

b\) Heavy sea swells.

c\) The rescue personnel were monitoring the 10-CM radar.

d\) The rescue personnel were monitoring the 3-CM radar.

041C- Which statement is NOT true regarding the SART?

a\) Responds to interrogations by a vessel\'s X-Band radar.

b\) Transmits on the 9 GHz band reserved for navigational radar.

c\) Operates in conjunction with a vessel\'s S-Band radar.

d\) Transmits a distinctive code for easy recognition.

041D- Which statement is true regarding the SART required for GMDSS
compliance?

a\) This is a performance monitor attached to at least one X-band
navigational radar system.

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

c\) This is a 9 GHz transponder capable of being received by another
vessel\'s S-band navigational radar system.

d\) This is a performance monitor attached to at least one X-band
navigational radar system.

041E-Which statement is NOT true regarding the SART?

a\) Responds to interrogations by a vessel\'s X-Band radar.

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 another
vessel\'s X-band navigational radar system.

d\) Transmits a distinctive signal for easy recognition.

041F- 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.

Key Topic #041 Answer Key: A: b) B: c) C: c) D: b) E: b) F: c).

KEY TOPIC #042: SART: TESTING PROCEDURES & BATTERY PARAMETERS:

042A- Which of the following statements concerning testing and
maintenance of SARTs is true?

a\) An at-sea GMDSS maintainer is not able to test a SART as it is
hermetically sealed.

b\) Testing a SART should be performed only in controlled environment as
a test signal may be misinterpreted as a genuine distress situation.

c\) A SART\'s battery must be replaced within ninety (90) days after the
expiration date imprinted on the unit.

d\) All of the above.

042B- Why is it important to limit the duration of testing a SART?

a\) Excessive testing causes \"burn in\" on the vessel\'s radar PPI.

b\) Testing a SART should be performed only in controlled environment as
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.

042C- What statement is true regarding tests and maintenance that could
be provided for the SART?

a\) To fully verify operation within manufacturer\'s specifications
would require measuring equipment to generate 9 GHz signals; generally
beyond the scope of on-board maintenance.

b\) Extreme care should be exercise because testing of the SART may be
received by other vessels and may be interpreted as a distress condition
or provide interfere with other vessels\' safe navigation.

c\) Battery should be replaced with a new one before the manufacturer\'s
expiration date shown on the SART.

d\) All of these.

042D-Why should functional testing of an SART be minimized?

a\) Potential interference with safe navigation.

b\) Minimize power consumption of the battery.

c\) Possibility of misinterpretation by other vessels as a distress
situation.

d\) All of these.

042E- Which is not a valid maintenance and testing function for an 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.

042F- The SART is required to have sufficient battery capacity to
operate in the stand-by mode for what period of time?

a\) Eight hours.

b\) Three days.

c\) Four days.

d\) Forty-eight hours.

Key Topic #042 Answer Key: A: b) B: b) C: d) D: d) E: a) F: c).

KEY TOPIC #043: EPIRB: SYSTEM STRUCTURE & OPERATION:

043A- Which is a function of a satellite under COSPAS-SARSAT using
satellite EPIRBs?

a\) Vessel information recovered from the digital encoded message
provided by the satellite EPIRB.

b\) Doppler shift of EPIRB signal is measured.

c\) Information received from EPIRBs are time-tagged and transmitted to
any Local User Terminal in the satellite\'s view.

d\) All of these.

043B- Which of the following satellite systems is of particular
importance to search and rescue missions under GMDSS?

a\) COSPAS/SARSAT.

b\) AMSAT.

c\) NASA/Arienne.

d\) COMSAT.

043C- Which of the following statements concerning COSPAS-SARSAT is
true?

a\) EPIRBs are units that are used as alerting devices.

b\) These are satellites in a low-earth polar orbit that detect EPIRB
beacons on 406 MHz and relay the information to an earth-side Local User
Terminal (LUT).

c\) The Doppler frequency measurement concept is used to determine the
EPIRB\'s location.

d\) All of the above.

043D- Which of the following statements concerning COSPAS-SARSAT is
false?

a\) EPIRBs are used primarily for distress alerting.

b\) These satellites are looking specifically for EPIRB signals on 406
MHz.

c\) These satellites use Doppler shift measurement to determine the
location of the beacons.

d\) After initiating a call request and selecting the CES, these
satellites may be used for commercial messages.

043E- A distress signal transmitted from which EPIRB is relayed by an
INMARSAT satellite.

a\) Class A EPIRBs.

b\) Class B EPIRBs.

c\) L-band EPIRBs on the designated frequency.

d\) 406 MHz EPIRBs broadcast to all vessels for relay to a CES.

043F- Which of the following statements concerning satellite EPIRBs is
true?

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

b\) The coded signal identifies the nature of the distress situation.

c\) The coded signal only identifies the vessel\'s name and port of
registry.

d\) If the GMDSS Radio Operator does not program the EPIRB, it will
transmit

default information such as the follow-on communications frequency and
mode.

Key Topic #043 Answer Key: A: d) B: a) C: d) D: d) E: c) F: a).

KEY TOPIC #044: EPIRB: ALERTING & FEATURES:

044A- What feature(s) may be found on certain satellite EPIRB units?

a\) Strobe light.

b\) Emergency transmission on 406 MHz.

c\) Float-free release bracket.

d\) All of these.

044B- What feature is not found on 406 MHz satellite EPIRB units?

a\) 121.5 MHz emergency homing transmitter.

b\) Aural locator signal.

c\) Emergency transmission on 406.025 MHz.

d\) Float-free release bracket.

044C- What statement is true regarding 406 MHz EPIRB transmissions?

a\) Allows immediate voice communications with the RCC.

b\) Coding permits the SAR authorities to know if manually or
automatically activated.

c\) Transmits a unique hexadecimal identification number.

d\) Radio Operator programs his I.D. into the SART immediately prior to
activation.

044D- Which of the following is normally found on EPIRBs that are
detected by satellites?

a\) A strobe light.

b\) A 5-watt 406-MHz beacon.

c\) A bracket designed to allow the EPIRB to automatically float-free.

d\) All of the above.

044E- Which EPIRB transmits a distress alert that is received and
relayed by an INMARSAT satellite?

a\) Class A EPIRBs.

b\) Class B EPIRBs.

c\) L-band EPIRBs.

d\) Category I EPIRBs.

044F- Which of the following EPIRBs is most likely to be used to
transmit a distress alert signal?

a\) S-Band EPIRBs.

b\) 406 MHz EPIRBs.

c\) Class A EPIRBs.

d\) 121.5/243 MHz EPIRBs.

Key Topic #044 Answer Key: A: d) B: b) C: c) D: d) E: c) F: b).

KEY TOPIC #045: EPIRB: HOMING & LOCATING SIGNALS:

045A- Which of the following would best be used for visual detection of
a distressed vessel?

a\) A 9-GHz SART\'s beacon.

b\) An EPIRB\'s strobe light.

c\) A 121.5-MHz EPIRB beacon.

d\) A 406-MHz EPIRB beacon.

045B- Which piece of required GMDSS equipment is the primary source of
transmitting locating signals?

a\) Radio Direction Finder (RDF).

b\) An EPIRB transmitting on 406 MHz.

c\) Survival Craft Transceiver.

d\) A SART transmitting on 406 MHz.

045C- 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\) A 121.5 MHz emergency transmitter in a satellite EPIRB.

d\) 406 MHz signal from a satellite EPIRB.

045D- What part of a satellite EPIRB may function as a visual aid to
rescue vessels?

a\) A 121.5 MHz emergency transmitter in a satellite EPIRB.

b\) Strobe light.

c\) 406 MHz signal from a satellite EPIRB.

d\) Loud beeping tone emitted by the unit once activated.

045E- 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.

045F- Which device provides the main means in the GMDSS for locating
ships in distress, or their survival craft?

a\) Radio Direction Finder.

b\) Satellite EPIRBs.

c\) MF/HF DSC.

d\) VHF homing device.

Key Topic #045 Answer Key: A: b) B: b) C: c) D: b) E: d) F: b).

KEY TOPIC #046: SURVIVAL CRAFT TRANSCEIVER:

046A- With what other stations may portable survival craft transceivers
communicate?

a\) Communications is permitted between survival craft.

b\) Communications is permitted between survival craft and ship.

c\) Communications is permitted between survival craft and rescue unit.

d\) All of the above.

046B- Equipment for radiotelephony use in survival craft stations under
GMDSS must have what capability?

a\) Operation on Ch-16.

b\) Operation on 457.525 MHz.

c\) Operation on 121.5 MHz.

d\) Any one of these.

046C- Equipment for radiotelephony use in survival craft stations under
GMDSS must have what characteristic(s)?

a\) Operation on Ch-16.

b\) Watertight.

c\) Permanently-affixed antenna.

d\) All of these.

046D- Which statement is NOT true regarding the requirements of survival
craft portable two-way VHF radiotelephone equipment?

a\) Operation on Ch-16.

b\) Effective radiated power should be a minimum of 2.0 Watts.

c\) Simplex (single frequency) voice communications only.

d\) All of these.

046E- Which statement is NOT true regarding the requirements of survival
craft portable two-way VHF radiotelephone equipment?

a\) Operation on Ch-13.

b\) Effective radiated power should be a minimum of 0.25 Watts.

c\) Simplex (single frequency) voice communications only.

d\) Operation on Ch-16.

046F- Which statement is NOT true regarding the requirements of survival
craft portable two-way VHF radiotelephone equipment?

a\) Operates simplex on Ch-70 and at least one other channel.

b\) Watertight to a depth of 1 meter for 5 minutes.

c\) Effective radiated power should be a minimum of 0.25 Watts.

d\) All of these.

Key Topic #046 Answer Key: A: d) B: a) C: d) D: b) E: a) F: a).

KEY TOPIC #047: SAR/MCC/RCC: SYSTEMS & PROCEDURES:

047A- Which action should the GMDSS radio operator take in a distress
situation when embarking in survival craft?

a\) Switch on EPIRB and SART immediately and leave on.

b\) EPIRB and SART switched on manually prior to embarking; remain
aboard vessel in distress.

c\) Notify RCC (Rescue Coordination Center) through VHF DSC in portable
equipment.

d\) Communicate via Inmarsat-C from the survival craft.

047B- Which is the key part of the search and rescue system under GMDSS?

a\) COSPAS/SARSAT satellites.

b\) AMSAT satellites.

c\) NASA satellites.

d\) US Space Agency satellites.

047C- Which statement is true regarding the COSPAS-SARSAT system?

a\) EPIRBs are used as satellite beacons aboard vessels as alerting
devices.

b\) Signals received by low altitude near-polar orbiting satellites are
relayed to a ground receiving station, called a Local User Terminal.

c\) Doppler shift is used to locate the beacons.

d\) All of these.

047D- Which statement is NOT true regarding the COSPAS-SARSAT system?

a\) EPIRBs are used as satellite beacons aboard lifeboats as alerting
devices.

b\) Locates distress beacons transmitting on 406 MHz.

c\) Doppler shift is used to locate the beacons.

d\) May be used to transmit public correspondence.

047E- 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\) None of the above.

047F- Which statement is true regarding the COSPAS-SARSAT system and
EPIRB operations?

a\) The EPIRB\'s position is calculated by the system and passed to the
RCC.

b\) The EPIRB transmits a unique Hex I.D. and vessel position that is
passed to the RCC.

c\) The EPIRB transmits a unique Hex I.D. that is passed to the RCC.

d\) Both a) and c) are true.

Key Topic #047 Answer Key: A: a) B: a) C: d) D: d) E: b) F: d).

KEY TOPIC #048: ON SCENE COMMUNICATIONS:

048A- Which of the following has been designated for "On-scene"
communications in GMDSS?

a\) Ch-24

b\) Ch-2182

c\) Ch-70

d\) Ch-16 on VHF radiotelephone and 2174.5 kHz using MF SITOR.

048B- 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-6

b\) Ch-13

c\) Ch-16

d\) Ch-70

048C- 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\) HF radiotelephone on 21.820 MHz.

c\) NBDP on 2177.0 kHz and VHF Ch-16.

d\) VHF Ch-16 and NBDP on 2174.5 kHz.

048D- Which of the following frequencies have NOT been designated for
"On-scene" communications in the Global Maritime Distress and Safety
System?

a\) VHF Ch-16.

b\) MF radiotelephony on 2182 kHz.

c\) NBDP on 2182.0 kHz.

d\) None of these.

048E- "On-scene\" communications would best be represented by?

a\) NBDP on 2174.5

b\) Sending DSC alert on VHF Ch-70.

c\) Using Inmarsat-C \"hot-key\" function.

d\) None of the above.

048F-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-16, 4125 kHz J3E, 3023 kHz J3E

c\) VHF Ch-16, 4125 kHz F1B, 3023 kHz J3E

d\) None of the above.

Key Topic #048 Answer Key: A: d) B: c) C: d) D: c) E: a) F: b).

KEY TOPIC #049: VHF: CONTROLS, VOLUME, SQUELCH, POWER, RANGE:

049A- Which of the following control selections may result in limited
receiving range?

a\) Setting the squelch control to its minimum level.

b\) The power switch is set to the \"high\" output position resulting in
receiver overloading.

c\) Setting the squelch control to its maximum level.

d\) Setting the channel selection switch midway between channels 6 and
16.

049B- At mid-day, what would be the best choice in attempting to
communicate with a shore station

15 miles (24 km) distant?

a\) VHF-FM.

b\) 16 MHz band.

c\) 12 MHz band.

d\) 22 MHz band.

049C- Which factors normally determine the range of VHF transmissions:

a\) Channel frequency.

b\) Power level.

c\) Both b) and d).

d\) Vessel antenna height.

049D- Causes of much longer than normal VHF transmissions are:

a\) Changing power from 1W to 25 W.

b\) Atmospheric ducting.

c\) Ionospheric activity in layers F1/F2.

d\) None of the above.

049E- Describing VHF transmissions as \"line of sight\" means:

a\) VHF communications are effective only with nearby stations within
visual range of the bridge.

b\) Vessel antenna height will affect the radius of propagation.

c\) The normal transmission range to a coast station is approximately 25
NM.

d\) Both b and c are true.

049F- The effectiveness of VHF communications is maximized by:

a\) The adjustment of squelch for maximum receiver sensitivity.

b\) Appropriate setting of the transmitter power.

c\) Selecting an appropriate channel.

d\) All of the above.

Key Topic #049 Answer Key: A: c) B: a) C: c) D: b) E: d) F: d).

KEY TOPIC #050: VHF: CHANNEL SYSTEM, USAGE, U.S.-INTERNATIONAL CHANNELS:

050A- A VHF frequency channel pair of TX 157.200 MHz and RX 161.800 MHz
would most likely be:

a\) A Public Correspondence Coast Radio Station frequency.

b\) Simplex.

c\) Duplex.

d\) Both a) and c) are correct.

050B- Which channel is utilized for the required bridge-to-bridge watch?

a\) DSC on Ch-70.

b\) VHF-FM on Ch-16.

c\) VHF-FM on Ch-13 in most areas of the continental United States.

d\) The vessel\'s VHF working frequency.

050C- While conducting routine communications using the wheelhouse VHF
with a station 1 mile distant, your recommended power setting would be:

a\) 25 watts after dark.

b\) 1 watt, day or night.

c\) 25 watts during a clear sunny day.

d\) 1 watt using DSC at night.

050D- 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\) Changes selected international duplex channels to simplex channels
for use in U.S. waters.

c\) Both of the scenarios above may be set up and selected by the
operator.

d\) None of the above.

050E- The USA-INT control on VHF units:

a\) Was made necessary by a desire for more simplex channels in the U.S.

b\) Correctly set, will result in Duplex operations in U.S. Coastal
waters on the \"alpha\" channels.

c\) Correctly set, will result in Simplex operations in U.S. Coastal
waters on the \"alpha\" channels.

d\) Both a) and c) are true.

050F- Proper and legal VHF operations require:

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

b\) The correct bandwidth must be selected by the operator.

c\) The power level must be appropriately chosen.

d\) Both answers a) and c) are correct.

Key Topic #050 Answer Key: A: d) B: c) C: b) D: b) E: d) F: d).

KEY TOPIC #051: NAVTEX-1: OPERATIONS.

051A- How is mutual interference among NAVTEX stations avoided?

a\) Stations are limited to daytime operation only.

b\) Transmitter power is limited to that necessary for coverage of
assigned area.

c\) Transmissions by stations in each NAVAREA are arranged in a
time-sharing basis.

d\) Both b) and c).

051B- When do NAVTEX broadcasts typically achieve maximum transmitting
range?

a\) Local noontime.

b\) Middle of the night.

c\) Sunset.

d\) Post sunrise.

051C- What should a GMDSS Radio Operator do if a NAVTEX warning message
is received but it contains too many errors to be usable?

a\) Do nothing. Vital NAVTEX messages will be repeated on the next
scheduled broadcast.

b\) Contact the NAVAREA coordinator and request a repeat broadcast.

c\) The hurricane will be upon the vessel; they\'re in big trouble.

d\) Listen to appropriate VHF weather channel for repeat warnings.

051D- What does a NAVTEX receiver do when it runs out of paper?

a\) The unit cannot operate, and all subsequent MSI broadcasts are
missed until the paper is replaced.

b\) It will give off either an audible and/or visual alarm.

c\) The system will automatically change from receiving MSI by NAVTEX to
receiving it by SafetyNET so that no messages will be lost.

d\) All of the above.

051E- 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.

051F- What is the transmitting range of most NAVTEX stations?

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

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

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

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

Key Topic #051 Answer Key: A: d) B: b) C: a) D: b) E: a) F: d).

KEY TOPIC #052: NAVTEX-2: PROGRAMMING.

052A- How is a NAVTEX receiver programmed to reject certain messages?

a\) The transmitting station\'s two-digit identification can be entered
to de-select reception of its broadcasts.

b\) By choosing a message category\'s single letter (A-Z) identifier and
then deselecting or deactivating.

c\) By entering the selcall of the transmitting station.

d\) By pressing \"00\" in the transmitter\'s ID block.

052B- How can reception of certain NAVTEX broadcasts be prevented?

a\) Stations are limited to daytime operation only.

b\) The receiver can be programmed to reject certain stations and
message categories.

c\) Coordinating reception with published broadcast schedules.

d\) Automatic receiver desensitization during night hours.

052C- Which of the following statements is true?

a\) The GMDSS Radio Operator can program the NAVTEX receiver to
automatically reject any category of messages under the master\'s
authority.

b\) The GMDSS Radio Operator can program the NAVTEX receiver to reject
all messages except navigation warnings, meteorological warnings, and
search and rescue information.

c\) The GMDSS Radio Operator can select the \"None\" option in the
message category menu.

d\) Upon entering a new NAVTEX station\'s broadcast range, the GMDSS
Radio Operators enters the station\'s selcall number.

052D- 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\) Programming the receiver to reject unwanted broadcasts.

c\) Coordinating reception with published broadcast schedules.

d\) Automatic receiver de-sensitization during night hours.

052E- 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\) The operator can set the unit to reject all messages except
navigation, weather and sea warnings, and search and rescue messages.

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

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

052F- Which message subject matter can be programmed to be rejected or
disabled by the operator of a NAVTEX receiver?

a\) Navigational warnings.

b\) Meteorological warnings.

c\) Pilot Service Messages.

d\) All of these.

Key Topic #052 Answer Key: A: b) B: b) C: b) D: b) E: b) F: c).

KEY TOPIC #053: NAVTEX-3: MESSAGE FORMAT.

053A- The NAVTEX message header contains the following?

a\) A single letter (A-Z) indicates the NAVTEX transmitting station.

b\) A two-digit number (01-99) indicates the NAVTEX message category.

c\) Message numbers include a date/time group along with the
transmitting station\'s numerical ID.

d\) None of these.

053B- Which of the following message categories cannot be disabled by
the GMDSS Radio Operator?

a\) Navigational warnings.

b\) Meteorological warnings.

c\) Search and Rescue information.

d\) All of the above.

053C- How are NAVTEX broadcasts transmitted?

a\) Using FEC techniques.

b\) NAVTEX is transmitted by commercial coast radio stations following
their traffic lists.

c\) NAVTEX is transmitted only when an urgency or distress broadcast is
warranted.

d\) No more often than every two hours and should immediately follow the
radiotelephone silent periods.

053D- Which determines whether a NAVTEX receiver does not print a
particular type of message content?

a\) The serial number and type of message have already been received.

b\) The subject indicator matches that programmed for rejection by the
operator.

c\) The transmitting station ID covering your area has not been
programmed for rejection by the operator.

d\) Both answers a) and b).

053E- Which information determines if a NAVTEX message is to be
rejected?

a\) Transmitter identity (numerals from 1 to 26 identifying transmitting
station within the NAVAREA).

b\) Subject indicator (single letter from A to Z indicating the type of
message).

c\) The Answerback of the receiving station has not been entered in the
NAVTEX receiver.

d\) Only messages having a serial number 00 are rejected.

053F- NAVTEX broadcasts are sent:

a\) In categories of messages indicated by a single letter or
identifier.

b\) Immediately following traffic lists.

c\) On request of maritime mobile stations.

d\) Regularly after the radiotelephone silent periods.

Key Topic #053 Answer Key: A: a) B: d) C: a) D: d) E: b) F: a).

KEY TOPIC #054: SAFETYNET-1: OPERATIONS.

054A- Where NAVTEX cannot be feasibly established, what system can be
implemented to provide an automated service in coastal waters to receive
MSI?

a\) SafetyNET.

b\) AMVER.

c\) VHF DSC.

d\) ARQ SITOR.

054B- What action should a GMDSS Radio Operator take when SafetyNET
distress or urgency messages are received by the vessel\'s EGC receiver?

a\) No immediate action is required as an audible tone will be generated
at the beginning and end of the transmission and a paper printout of the
message will be generated.

b\) Aural and visual alarms are activated, and require manual
deactivation.

c\) No immediate action is required by the operator since the
transmission will be automatically acknowledged by the receiving vessel.

d\) A periodic alarm tone will be heard until the radio operator prints
the message from the unit\'s memory.

054C- 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\) SafetyNET.

b\) AMVER.

c\) VHF DSC.

d\) ARQ SITOR.

054D- Aboard ship, SafetyNET messages can be received by which
equipment?

a\) VHF DSC.

b\) NAVTEX Receiver.

c\) Dedicated receiver or optional receiver integrated in vessel\'s SES.

d\) All of these.

054E- SafetyNET messages can be received by which of the following
shipboard equipment?

a\) NAVTEX.

b\) MF and HF NBDP.

c\) EGC receiver.

d\) All of these.

054F- Marine Safety Information is promulgated via satellite through
which system?

a\) AMVER.

b\) SafetyNET.

c\) NAVTEX.

d\) Inmarsat-M SES.

Key Topic #054 Answer Key: A: a) B: b) C: a) D: c) E: c) F: b).

KEY TOPIC #055: SAFETYNET-2: INFORMATION.

055A- SafetyNET promulgates what type of information?

a\) MSI.

b\) Traffic Lists.

c\) News advisories.

d\) MARAD.

055B- What kind(s) of broadcasts are not available through SafetyNET?

a\) MSI and messages to specific geographic areas.

b\) Vessel traffic lists.

c\) Storm warnings.

d\) Distress and urgent bulletins.

055C- Which satellite system promulgates Maritime Safety Information?

a\) AMVER.

b\) Inmarsat-C SafetyNET.

c\) NAVTEX.

d\) Inmarsat-M SES.

055D- What information is promulgated by the international SafetyNET?

a\) MSI.

b\) Traffic Lists.

c\) Priority Messages.

d\) MARAD.

055E- A vessel using SafetyNet should:

a\) Notify the NAVAREA coordinator you are using SafetyNet for MSI
(Maritime safety information).

b\) Set the receiver to your present NAVAREA.

c\) Set the receiver to your destination Ocean Region.

d\) Notify the NAVAREA coordinator you are using SafetyNet for MSI
(Maritime safety information) and set the receiver to your destination
Ocean Region.

055F- In using SafetyNET for MSI (Maritime safety information):

a\) If you fail to log-in with your Ocean Region you will receive only
unscheduled urgent and distress broadcasts.

b\) To receive scheduled and unscheduled broadcasts you must log-in with
your Ocean Region Net Control Station (NCS).

c\) Your satellite receiver must have Enhanced Group Calling (EGC)
capability.

d\) All of these.

Key Topic #055 Answer Key: A: a) B: b) C: b) D: a) E: b) F: d).

KEY TOPIC #056: EGC:

056A- Over what system are Enhanced Group Calls transmitted?

a\) By COSPAS satellite.

b\) By HF SITOR shore stations.

c\) By NAVTEX shore stations.

d\) By Inmarsat satellite.

056B- How are MSI (Marine safety information) broadcasts received in an
EGC receiver integrated with existing Inmarsat equipment when the SES is
otherwise engaged in communications?

a\) The broadcast message is missed and the Radio Operator must request
a retransmission.

b\) The broadcast message is stored in the EGC memory and will
automatically be printed at the conclusion of the ongoing traffic.

c\) The radio operator can request retransmission of messages missing
from numeric serial number succession.

d\) There is no loss of information since broadcasts of \"vital\"
messages will be repeated.

056C- 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.

056D- 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\) EGC.

c\) AMVER.

d\) DSC.

056E- What services are available through Enhanced Group Calls?

a\) Marine Safety Information and messages to pre-defined groups of
subscribers.

b\) Marine Safety Information and vessel traffic lists.

c\) Hourly NOAA weather broadcasts from the NWS.

d\) Coastal weather broadcasts.

056F- What messages originate from registered information providers
anywhere in the world and are broadcast to the appropriate ocean region
via a CES?

a\) SafetyNET messages.

b\) AMVER broadcasts.

c\) Urgency messages.

d\) NAVTEX broadcasts.

Key Topic #056 Answer Key: A: d) B: d) C: b) D: b) E: a) F: a).

KEY TOPIC #057: H.F. MSI:

057A- Which HF SITOR mode would be selected to receive MSI broadcasts
from high seas shore stations:

a\) AM

b\) FEC

c\) RTTY

d\) ARQ

057B- The U.S. Coast Guard communications station providing HF MSI
broadcast coverage for NAVAREA IV is:

a\) NOJ (Kodiak).

b\) NMF (Boston).

c\) NMC (San Francisco).

d\) NMO (Honolulu).

057C- The U.S. Coast Guard communications station providing HF MSI
(Maritime safety information) broadcast coverage for NAVAREA XII is:

a\) NMA (Miami).

b\) NMF (Boston).

c\) NMO (Honolulu).

d\) NMR (San Juan).

057D- Frequencies for receiving HF MSI (Maritime safety information)
are:

a\) The same as used for NAVTEX.

b\) The same as used for general telex using FEC.

c\) Specified HF voice frequencies.

d\) Specified HF NBDP frequencies.

057E- Which frequency/mode is authorized for use internationally for
Marine Safety Information transmissions?

a\) 4125.0 kHz using simplex mode.

b\) 4209.5 kHz using FEC mode.

c\) 4209.5 kHz using ARQ mode.

d\) 4125.0 kHz using FEC mode.

057F- How many frequencies are assigned specifically for H.F. MSI
broadcasts?

a\) 6

b\) 5

c\) 8

d\) 7

Key Topic #057 Answer Key: A: b) B: b) C: c) D: d) E: b) F: c).

KEY TOPIC #058: NAVAREAS:

058A- Which NAVAREA is associated with the western North Atlantic and
the Caribbean Sea?

a\) NAVAREA IV.

b\) NAVAREA X.

c\) NAVAREA XI.

d\) NAVAREA XII.

058B- Which NAVAREA is associated with the Pacific Ocean north of the
equator and east of the International Date Line?

a\) NAVAREA IV.

b\) NAVAREA X.

c\) NAVAREA XI.

d\) NAVAREA XII.

058C- NAVAREAs referred to in NAVTEX are the same as used in:

a\) INMARSAT SafetyNET.

b\) GMDSS sea areas.

c\) International Vessel Traffic Service.

d\) INMARSAT ocean regions.

058D- A vessel operating in the Western Atlantic or along the East coast
of North America and Central America from Canada to Venezuela, including
the Caribbean and Panama, would be located in which NAVAREA?

a\) X

b\) XI

c\) IV

d\) XIII

058E- A vessel operating in the Eastern Pacific or along the West coast
of North and Central America from Alaska to Ecuador, including Panama
and Hawaii, would be operating in which NAVAREA?

a\) X

b\) XI

c\) XII

d\) IV

058F- A vessel on a voyage between Miami and Los Angeles via the Panama
Canal would be operating in which NAVAREA(s)?

a\) II and III.

b\) IV and XII.

c\) IV and V.

d\) V and VI.

Key Topic #058 Answer Key: A: a) B: d) C: a) D: c) E: c) F: b).

KEY TOPIC #059: INMARSAT-C POWER UP, SELF-TEST, CONTROLS AND INDICATOR
LAMPS.

059A- Which of the following actions should be taken once the vessel is
berthed and will not leave port again for several weeks?

a\) The GMDSS Radio Operator must notify the NCS that the vessel will be
off-line, and wait for the NCS to acknowledge with a confirmation number
that must be logged.

b\) The Inmarsat-C system can be powered down without taking additional
steps once the GMDSS Radio Operator has ensured that all incoming
SafetyNET messages have been received and stored.

c\) The GMDSS Radio Operator must log out of the Inmarsat-C system.

d\) The GMDSS Radio Operator must transmit an all-ships alert to notify
all vessels within the satellite\'s footprint that the vessel will be
off-line.

059B- What action should be taken on arrival at every port?

a\) An Inmarsat-C system must be powered down.

b\) Send a message to the NCS advising arrival in port.

c\) Both of the above.

d\) None of the above.

059C- With most Inmarsat-C systems what should the indicator lamps do
when powering up?

a\) The power on lamp should light and the others stay off until a
message is received.

b\) All lamps should illuminate in a particular sequence per the
operator's manual.

c\) All lamps should light and stay on.

d\) All lamps should light except the RED light.

059D- Upon power-up, what controls are adjusted on an Inmarsat-C
terminal?

a\) The antenna Azimuth and Elevation controls.

b\) The receiver gain is adjusted for maximum signal.

c\) Both of the above.

d\) None of the above.

059E- On an Inmarsat-C system soon after power up what might a blinking
lamp indicate?

a\) The system is not yet locked on to the NCS signal.

b\) An EGC message is being received.

c\) There is mail being received.

d\) None of the above.

059F- On an Inmarsat-C system an alarm sounds:

a\) When first powered on.

b\) When receiving distress traffic.

c\) Both of the above.

d\) None of the above.

Key Topic #059 Answer Key: A: c) B: d) C: b) D: d) E: a) F: b).

KEY TOPIC #060: SELECTING AN INMARSAT OCEAN REGION.

060A- Which satellite(s) would most likely be selected for use when the
vessel is operating off the eastern shore of the United States?

a\) AOR-W.

b\) IOR-E.

c\) POR.

d\) Either AOR-W or IOR-E will work.

060B- Which satellite would be chosen when operating in the Eastern Gulf
of Mexico?

a\) AOR-W.

b\) IOR.

c\) POR.

d\) Any one of these.

060C- Which longitude corresponds to the AOR-W satellite for Inmarsat
communications?

a\) 64.5E.

b\) 178E.

c\) 15.5W.

d\) 54W.

060D- Which longitude corresponds to the AOR-E satellite for Inmarsat
communications?

a\) 64.5E.

b\) 178E.

c\) 15.5W.

d\) 54W.

060E- Which longitude corresponds to the POR\'s satellite location for
Inmarsat communications?

a\) 64.5E.

b\) 178E.

c\) 15.5W.

d\) 54W.

060F- Which longitude corresponds to the IOR\'s satellite location for
Inmarsat communications?

a\) 64.5E.

b\) 178E.

c\) 15.5W.

d\) 54W.

Key Topic #060 Answer Key: A: a) B: a) C: d) D: c) E: b) F: a).

KEY TOPIC #061: INMARSAT: LOG-IN, LOG-OUT.

061A- Which action must be taken to ensure that incoming message traffic
of all priority levels will be received through Inmarsat-C?

a\) The system needs only to be commissioned and turned on.

b\) No additional action is necessary after turning on the receiver and
aiming the antenna at the desired satellite.

c\) The GMDSS Radio Operator must log-in to the desired satellite.

d\) The GMDSS Radio Operator must log on to the desired satellite and
receive the message reference number (MRN) from the CES.

061B- When logging into the Inmarsat system using Inmarsat-C, it is
necessary to:

a\) Enter your IMN.

b\) Enter the CES answer back.

c\) Select the Ocean Region.

d\) Call the CES and inform them that you are now operating in the
appropriate ocean region.

061C- What action should be taken on changing from one ocean region to
another?

a\) Power the system down and turn the power back on again.

b\) Manually realign the antenna.

c\) Log out of the current satellite and log in to the correct
satellite.

d\) Both a) and c) are correct.

061D- The process of logging out involves the following:

a\) Selecting the proper command from the correct menu.

b\) Obtaining confirmation of log out from the NCS.

c\) Both of the above.

d\) None of the above.

061E- How do you determine that your Inmarsat-C terminal has
accomplished a successful login?

a\) The red panel lamp lights.

b\) The green synch lamp starts flashing.

c\) The green synch lamp turns on steady.

d\) None of the above.

061F- On many Inmarsat-C terminals, which of the following indicates a
successful log-in?

a\) A message is displayed on the screen indicating a successful log-in.

b\) The printer may also print out a notice of a successful log-in.

c\) Both of the above.

d\) None of the above.

Key Topic #061 Answer Key: A: c) B: c) C: c) D: a) E: d) F: c).

KEY TOPIC #062: INMARSAT: GENERAL SYSTEM OPERATIONS:

062A- What is the primary function of an NCS?

a\) To monitor and control communications through the Inmarsat satellite
for which it is responsible.

b\) To provide direct communications between the Inmarsat station
placing a call and the station receiving the call.

c\) To provide multi-mode communications between the Inmarsat station
placing a call and the coast radio station that will deliver it.

d\) To determine which satellite is best suited to provide
communications between the Inmarsat station placing a call and the
station receiving the call.

062B- What is the primary function of a CES?

a\) To monitor and control communications through the Inmarsat satellite
for which it is responsible.

b\) To provide direct communications between the Inmarsat station
placing a call and the station receiving the call.

c\) To provide multi-mode communications between the Inmarsat station
placing a call and the coast radio station that will deliver it.

d\) To determine which satellite is best suited to provide
communications between the Inmarsat station placing a call and the
station receiving the call.

062C- Messages are transmitted by the CES according to what criteria?

a\) First In, First Out.

b\) Last In, First Out.

c\) Priority, e.g.: Distress, Urgency, Safety and Routine.

d\) Serial Number.

062D- How is maximum coverage provided by satellites in the maritime
satellite service?

a\) Four satellites in polar orbit.

b\) Four satellites in geo-stationary orbit approximately 22,184 miles
above the equator.

c\) Four satellites in geo-stationary orbit for each Inmarsat Service
(A, B, C and M).

d\) Through coordinated use of COSPAS-SARSAT satellites.

062E- What is meant by the characters \"GA+\" on an Inmarsat terminal?

a\) General Address (to all stations).

b\) Go ahead.

c\) The instruction to \"give address\".

d\) None of these.

062F- What is the purpose of compandors?

a\) Noise and echo-canceling used in telex operation.

b\) Noise and echo canceling in voice operation.

c\) To enable distress communications.

d\) To enable data communications.

Key Topic #062 Answer Key: A: a) B: b) C: c) D: b) E: b) F: b).

KEY TOPIC #063: INMARSAT: GENERAL SYSTEM OPERATIONS:

063A- What is an MRN?

a\) A Mobile Registration Number, provided by the FCC.

b\) A Message Reference Number, provided by the CES.

c\) A Mobile Registration Number, provided by IMO.

d\) The vessel\'s call sign.

063B- To keep the Inmarsat-A/B antenna pointing at the desired
satellite, regardless of the ship\'s position and course, it has an
input from the vessel\'s:

a\) Operational radar.

b\) Automated Radar Plotting Aid (ARPA) equipped radar.

c\) Steering control system.

d\) Gyrocompass.

063C- The Inmarsat telephone and telex communications channel usage
scheme is:

a\) Many ships on the same telex analog channel frequency and many ships
on the same TDM telephone channel.

b\) One ship per telephone channel and many ships per telex channel.

c\) One ship per analog telephone channel and one ship per telex analog
channel frequency.

d\) One ship per channel whether telephone or telex.

063D- What is an Inmarsat \"Subscriber Number\"?

a\) This identifies the vessel\'s selective calling (selcall) number.

b\) This is the Inmarsat number that is assigned to a unit for incoming
calls.

c\) This is the vessel\'s Inmarsat registration number for accounting
authority purposes.

d\) This number is used for receiving news and other optional services
in FleetNET.

063E- Which of the following statements concerning Inmarsat
geostationary satellites is true?

a\) They are in a low-earth polar orbit to provide true global coverage.

b\) They are in an equatorial orbit to provide true global coverage.

c\) They provide coverage to vessels in nearly all of the world\'s
navigable waters.

d\) Vessels sailing in equatorial waters are able to use only one
satellite whereas other vessels are able to choose between at least two
satellites.

063F- What is meant by \"CES\"?

a\) Coast Earth Satellite.

b\) Coast Earth Station.

c\) Central Equatorial Station.

d\) Coastal Equivalent Station.

Key Topic #063 Answer Key: A: b) B: d) C: b) D: b) E: c) F: b).

KEY TOPIC #064: INMARSAT-A EQUIPMENT AND OPERATIONS.

064A- How is a signal radiated from an Inmarsat-A system\'s antenna?

a\) It is a highly focused directional signal that must be beamed at the
desired satellite.

b\) It is usually radiated in an omni-directional pattern, but an
optional feature allows it to be directional for use when the vessel is
on the fringe of the satellite\'s footprint.

c\) It is radiated in an omni-directional pattern.

d\) It is radiated in an omni-directional pattern that can be reversed
by the Operator to attain directional beaming to an alternate satellite.

064B- Which mode of Inmarsat-A communications may be possible with a
lower received signal strength?

a\) Fax.

b\) Telex

c\) Voice Communications, compandors off.

d\) Voice Communications, compandors on.

064C- What is the purpose of the second I.D. in an Inmarsat-A SES?

a\) To provide an additional number which may be dedicated to computers,
fax, etc.

b\) To provide an alternate number which may be called if a busy signal
is received by the calling party.

c\) To provide an additional speech path which may be used to
communicate while the first channel is engaged in active communications.

d\) To provide for an emergency working frequency.

064D- What is the effect of having five periods (e.g.-meanwhile\.....)
in the text of a telex transmission on an Inmarsat-A SES?

a\) Only the first period will be routed to the receiving party.

b\) Only the first two periods will be routed to the receiving party.

c\) The transmission will automatically terminate after those characters
are transmitted.

d\) This will automatically trigger the reversal of charges to the
receiving party.

064E- Why is the automatic answerback request (WRU) first used by the
CES after an Inmarsat-A telex call has been placed from a ship?

a\) Identify the SES making the request.

b\) Let the CES operator know the printer is functioning correctly.

c\) Get the identity of the ship station and start the channel
assignment process.

d\) Verify that there is a good connection with no transmission errors.

064F- When sending digital information via an Inmarsat-A terminal, what
should be utilized for optimum communications?

a\) Noise-blanking must be selected by the operator.

b\) Request a duplex telephone call without compandors.

c\) Request a simplex voice call without compandors.

d\) Request a simplex voice call with compandors.

Key Topic #064 Answer Key: A: a) B: b) C: a) D: c) E: a) F: b).

KEY TOPIC #065: INMARSAT-C EQUIPMENT AND OPERATIONS.

065A- Which mode of communications is NOT possible through an Inmarsat-C
SES?

a\) Data.

b\) Telex.

c\) Emergency Activation.

d\) Shore-to-ship Facsimile.

065B- What is the average length of time required for a telex sent by
Inmarsat-C to be delivered to the addressee?

a\) All Inmarsat-C communications are made with real-time connectivity
so there is no delay in message delivery.

b\) The average delivery time for a message sent by Inmarsat-C is about
10 minutes.

c\) Date/time notification of delivery is possible only through
Inmarsat-A.

d\) The average delivery time for a telex sent by Inmarsat-C is about 10
minutes, but fax and data messages sent by Inmarsat-C require about 30
minutes for delivery.

065C- How is a signal radiated from an Inmarsat-C system\'s antenna?

a\) It is a highly focused directional signal that must be beamed at the
desired satellite.

b\) It is usually radiated in an omni-directional pattern, but an
optional feature allows it to be directional for use when the vessel is
on the fringe of the satellite\'s footprint.

c\) It is radiated in an omni-directional pattern.

d\) It is radiated in an omni-directional pattern that can be reversed
by the Operator to attain directional beaming to an alternate satellite.

065D- What statement is true regarding Inmarsat-C?

a\) There is a propagation delay, but a direct connection is made
between the ship and shore users.

b\) There are delays in establishing the communications then a direct
real-time connection is maintained with the other party.

c\) This is a store and forward network with an intermediate step that
means there is no direct connection between ship and shore users.

d\) The telex message is stored until the mailbox is accessed by the
station desiring to retrieve their message.

065E- With an Inmarsat-C CES, how are messages routed to receiving
stations?

a\) Direct connections are made to the receiving stations via gateways.

b\) All messages are forwarded via a store and forward network.

c\) Intermediary stations are used to connect the sending station with
the receiving station in a real-time mode.

d\) Messages are stored until the network is polled by the receiving
station.

065F- What are the directional characteristics of the Inmarsat-C SES
antenna?

a\) Highly directional parabolic antenna requiring stabilization.

b\) Omni-directional.

c\) Wide beam width in a cardioid pattern off the front of the antenna.

d\) Very narrow beam width straight-up from the top of the antenna.

Key Topic #065 Answer Key: A: d) B: b) C: c) D: c) E: b) F: b).

KEY TOPIC #066: INMARSAT-C EQUIPMENT AND OPERATIONS.

066A- Which of the following best describes Inmarsat-C operation?

a\) Is an analog-based system.

b\) Requires a stabilized directional antenna.

c\) Provides for voice, telex, high- and low-speed data and compressed
video communications.

d\) Is a digital store-and-forward system that also provides Enhanced
Group Call, data reporting, polling and distress alerting capabilities.

066B- Which of the following best describes a shipboard Inmarsat-C
system?

a\) A satellite communications system that provides real-time
connectivity.

b\) A small, lightweight terminal capable of providing satellite
store-and-forward message communications.

c\) A small, lightweight terminal used to transmit messages over high
frequency (HF) bands to communicate through a satellite.

d\) A satellite communications system that also provides continuous
Digital Selective Calling coverage for all ocean regions.

066C- Which of the following modes of communications are available when
using Inmarsat-C?

a\) Telex.

b\) Fax.

c\) 14400 BPS Data.

d\) Voice.

066D- Which mode of communications is possible through an Inmarsat-C
SES?

a\) SITOR.

b\) Telex.

c\) Radiotelephone.

d\) DSC

066E- It is possible to transmit all of the following via Inmarsat-C
from a vessel except?

a\) Telex.

b\) Text for delivery by Fax.

c\) Voice.

d\) Comtex mail and x.400 data services.

066F- Inmarsat-C provides for which of the following?

a\) Polling, enhanced group call, and one-way position and data
reporting via satellite.

b\) FM voice communications via satellite.

c\) Two-way messaging and data communications on a store-and-forward
basis.

d\) Polling, enhanced group call, one-way position and data reporting
via satellite, two-way messaging and data communications on a
store-and-forward basis.

Key Topic #066 Answer Key: A: d) B: b) C: a) D: b) E: c) F: d).

KEY TOPIC #067: COMPARE/DIFFERENTIATE \"A\" AND \"C\" TERMINALS.

067A- Which statement concerning Inmarsat-A and Inmarsat-C terminals is
correct?

a\) Both Inmarsat-A and Inmarsat-C units are capable of faxes and voice
communications.

b\) Both Inmarsat-A and Inmarsat-C units can send data as well as send
messages to FAX machines.

c\) Inmarsat-A units do not require compandors for data communications
but Inmarsat-C units do require compandors.

d\) None of the above.

067B- When Inmarsat-A and Inmarsat-C terminals are compared:

a\) Inmarsat-A antennas are bulkier but omni-directional, while
Inmarsat-C antennas are smaller and parabolic for aiming at the
satellite.

b\) Inmarsat-A antennas are parabolic and smaller for higher gain, while
Inmarsat-C antennas are larger but omni-directional.

c\) Inmarsat-C antennas are smaller but omni-directional, while
Inmarsat-A antennas are parabolic for lower gain.

d\) None of the above.

067C- Which statement concerning Inmarsat-A and Inmarsat-C terminals is
correct?

a\) Inmarsat-A terminals require gyro and GPS input to enable automatic
satellite tracking.

b\) Inmarsat-C terminals require only GPS input to enable automatic
satellite tracking.

c\) Inmarsat-A terminals require AZ/EL setup and gyro input to enable
automatic satellite tracking.

d\) Inmarsat-C terminals require AZ/EL setup and GPS input to enable
automatic satellite tracking.

067D- When Inmarsat-A and Inmarsat-C terminals are compared:

a\) Inmarsat-C antennas are smaller, with active parabolic antennas but
no rewind capability.

b\) Inmarsat-A antennas are larger, with passive non-parabolic antennas
that require rewind capability.

c\) Inmarsat-C antennas are smaller, with passive non-parabolic antennas
but no rewind capability.

d\) Inmarsat-A antennas are larger, with parabolic antennas but no
rewind capability.

067E- Which statement concerning Inmarsat-A and Inmarsat-C terminals is
correct?

a\) Both Inmarsat-A and Inmarsat-C units are subject to shadowing
effects due to their omni-directional antennas.

b\) Both Inmarsat-A and Inmarsat-C units are subject to shadowing
effects but Inmarsat-A units have directional antennas.

c\) Both Inmarsat-A and Inmarsat-C units are subject to shadowing
effects but Inmarsat-C units have directional antennas.

d\) Both Inmarsat-A and Inmarsat-C units are subject to shadowing
effects due to their directional antennas.

067F- When Inmarsat-A and Inmarsat-C terminals are compared:

a\) Inmarsat-A units provide greater communications capabilities with
the benefits of greater size/weight, installation expense and initial
cost.

b\) Inmarsat-C provides lesser communications capabilities with the
trade-offs of greater size/weight, installation expense and initial
cost.

c\) Inmarsat-A units provide greater communications capabilities with
the trade-offs of greater size/weight, installation expense and initial
cost.

d\) Inmarsat-C units are of smaller size/weight, installation expense
and initial cost and provide greater communications capabilities due to
modern technology.

Key Topic #067 Answer Key: A: b) B: d) C: c) D: c) E: b) F: c).

KEY TOPIC 68: SELECTING C.E.S. - C.E.S. ID #.

068A- Which CES should a GMDSS Radio Operator select if his/her vessel
is off the Pacific Coast of the United States?

a\) Goonhilly.

b\) Anatolia.

c\) Niles Canyon or Santa Paula.

d\) RCC Alameda.

068B- Which CES should a GMDSS Radio Operator select if his/her vessel
is off the Atlantic Coast of the United States?

a\) Southbury or Staten Island.

b\) Santa Paula.

c\) RCC New York.

d\) Anatolia.

068C- What is the C.E.S. ID Code for the Southbury Earth Station for a
vessel operating in the Western Atlantic?

a\) 00

b\) 01

c\) 10

d\) 11

068D- What is the C.E.S. ID Code for the Santa Paula Earth Station for a
vessel operating off the Pacific Coast of the U.S.?

a\) 00

b\) 11

c\) 10

d\) 01

068E- Which Earth Station would a vessel be utilizing if operating off
the Pacific Coast of the United States?

a\) Goonhilly.

b\) Southbury.

c\) Santa Paula.

d\) KPH (San Francisco, CA).

068F- Which Earth Station would a vessel be utilizing if operating off
the Atlantic Coast of the United States?

a\) Southbury.

b\) Santa Paula.

c\) WCC (Chatham, MA).

d\) Odessa.

Key Topic #068 Answer Key: A: c) B: a) C: b) D: d) E: c) F: a).

KEY TOPIC #069: INMARSAT-A ADDRESSING/DIALING SEQUENCE, VOICE.

069A- A vessel is operating in the Western Atlantic. To initiate a
ship-to-shore telephone contact to a shoreside party in the United
States, whose number is 123-456-7890, through the Southbury Earth
Station, using automatic service by telephone, a valid Inmarsat dialing
sequence is?

a\) 1011234567890

b\) #0111234567890#

c\) 01# 0011234567890#

d\) 1234567890

069B- A vessel is operating in the Eastern Atlantic. To initiate a
ship-to-shore telephone contact to a shoreside party in the United
States, whose number is 202-456-7890, through the Goonhilly Earth
Station, using automatic service by telephone, a valid Inmarsat dialing
sequence would be?

a\) 1020234567890

b\) 02# 0012024567890#

c\) 0111234567890#

d\) 2024567890

069C- Which key would be used to indicate the end of a manually dialed
number in a telephone, facsimile or data call via an Inmarsat-A SES?

a\) The \"\*\" key.

b\) The \"ENTER\" key.

c\) The \"+\" key.

d\) The \"#\" key.

069D- The U.S. Country Code for voice transmission is:

a\) 011

b\) 1

c\) 001 for Southbury, 201 Santa Paula.

d\) 581 for AOR-E, 582 for POR and 584 for AOR-W.

069E- If you are south of the Hawaiian Islands and wish to communicate
by voice with another ship 200 miles due west of Lands End, UK. What is
the proper procedure?

a\) 01# 008711502360#

b\) 04# 115821503695#

c\) 001# 008512364560#

d\) 03+ 0058143032643+

069F- Which of the following is a correct dialing string for a vessel in
the western Atlantic to send a FAX to a U.S. destination using an
Inmarsat-A terminal?

a\) 02# 110313

b\) 01+ 110243674932+

c\) 01# 0015036943254#

d\) 001# 15036684376#

Key Topic #069 Answer Key: A: c) B: b) C: d) D: b) E: a) F: c).

KEY TOPIC #070: INMARSAT-A ADDRESSING/DIALING SEQUENCE TELEX

070A- Which key is used to indicate the end of a selection in a telex
call via an Inmarsat-A SES?

a\) The \"\*\" key.

b\) The \"ENTER\" key.

c\) The \"+\" key.

d\) The \"#\" key.

070B- Which number, if typed at an Inmarsat-A SES by a vessel in the
Western Atlantic, would result in placing an automatic telex call to a
subscriber whose WUT subscriber number is 123456?

a\) 00230123456#

b\) 0012131234567#

c\) 00230123456+

d\) 00 1 213 1234567+

070C- Which of the following numbers is appropriate for an Inmarsat-A
terminal placing a telex call via Southbury to another ship logged-in to
the AOR-E?

a\) 01+ 005841506423+

b\) 01+ 005811506423+

c\) 02+ 005841506423+

d\) 13+ 005811506423+

070D- You are on a ship in the Pacific ocean. What keyboard entry would
you make on an Inmarsat-A terminal to obtain a telex connection via
Santa Paula to another ship that is 300 miles west of San Francisco?

a\) 01# 005821504530#

b\) 03+ 005821504530+

c\) 01+ 005821504530+

d\) 001+ 005821504530+

070E- What keyboard entry would you make on an Inmarsat-A terminal to
obtain a telex connection to a shoreside telex terminal number 882419
office in Nebraska, USA (telex country code 230)?

a\) 11230882419+

b\) 00230882419#

c\) 00230882419+

d\) 00230882419

070F- Which of the following is a correctly formatted Inmarsat-A address
for sending communications to a shoreside telex terminal number 440122
in the United Kingdom (telex country code 51)?

a\) 51440122+

b\) 51440122

c\) (51)440122+

d\) 51440122#

Key Topic #070 Answer Key: A: c) B: c) C: b) D: c) E: c) F: a).

KEY TOPIC #071: TWO DIGIT OPERATING CODES.

071A- What is the Inmarsat-A Service Code for automatic service?

a\) AA

b\) 11

c\) 01

d\) 00

071B- What dial sequence is used, after entering the shore ID, to obtain
the intervention of the telephone operator in the Inmarsat-A service?

a\) 00#

b\) 01#

c\) 10#

d\) 11#

071C- What must be entered, after the Shore I.D. and \"#\" sign is
entered and a ring-back tone is heard, to obtain the intervention of the
telephone operator in the Inmarsat-A service?

a\) 00#

b\) 01#

c\) 10#

d\) 11#

071D- What is the Inmarsat-A service code for the international
telephone information operator?

a\) 12#

b\) 11+

c\) 13#

d\) 36#

071E- How would a Radio Operator of a vessel off the California Coast
request Operator Assistance from the shore station via telex?

a\) Dial 11# on the keypad after receiving the \"bong\" tone.

b\) Type 00+ after receiving the \"GA\" by the shore station.

c\) Type 11+ after receiving the \"GA\" by the shore station.

d\) Type 001 after receiving the \"GA\" by the shore station.

071F- What dial sequence is used, after entering the shore ID, to place
a call that will be billed to a credit card?

a\) 36#

b\) The digits 00 followed by the country code, the credit card number,
the expiration date and ending with the \"#\" sign.

c\) Credit card billing is impossible via Inmarsat.

d\) The Shore I.D. and \"#\" sign followed by the digits 00, then the
Country Code, subscriber\'s number and ending with the \"#\" sign.

Key Topic #071 Answer Key: A: d) B: d) C: d) D: a) E: c) F: a).

KEY TOPIC #072: INMARSAT-C ADDRESSING: TO SHIP, TELEX:

072A- From an Inmarsat-C terminal which of the following is a correctly
formatted address for sending telex messages to a vessel in AOR-W?

a\) 5841502773

b\) 8741502773

c\) 584436671929

d\) Either a) or c) are correct, depending on the Inmarsat system
addressed.

072B- Which of the following is a correctly formatted Inmarsat-C address
book entry for sending telex communications to a vessel in the AOR-E?

a\) 871436772983

b\) 571436772983

c\) 5811509952

d\) 5811509952+

072C- Which of the following is a correctly formatted Inmarsat-C address
book entry for sending telex communications to a vessel in the POR?

a\) 582436559121

b\) 872436559121

c\) 582436559121+

d\) 5821508862+

072D- Which of the following is a correctly formatted Inmarsat-C address
book entry for sending telex communications to a vessel in the IOR?

a\) 853446323868

b\) 873446976519

c\) 582446323868

d\) 583446976519

072E- Which of the following is a correctly formatted Inmarsat-C address
book entry for sending telex communications to a vessel in AOR-W?

a\) 8541502927

b\) 5841502927

c\) 8741502927

d\) 5841502927+

072F- Which of the following is a correctly formatted Inmarsat-C address
book entry for sending telex communications to a vessel in the POR?

a\) 582377125619

b\) 5821506692

c\) 582436377125

d\) All may be correct, depending on the Inmarsat system addressed.

Key Topic #072 Answer Key: A: d) B: c) C: a) D: d) E: b) F: d).

KEY TOPIC #073: INMARSAT-C ADDRESSING: TO A LAND TELEX TERMINAL:

073A- Which of the following is a correctly formatted Inmarsat-C address
book entry for sending communications to a shoreside telex terminal
number 45992 in Taiwan (telex country code 769)?

a\) (769)45992

b\) 76945992+

c\) 769 45992+

d\) None of the above.

073B- Which of the following is a correctly formatted Inmarsat-C address
book entry for sending communications to a shoreside telex terminal
number 440122 in the United Kingdom (telex country code 51)?

a\) 51440122+

b\) 51440122

c\) (51)440122

d\) 51440122#

073C- If your vessel is in the POR, which of the following is a
correctly formatted Inmarsat-C address book entry for sending
communications to a shoreside telex terminal number 42267 in Ecuador
(telex country code 308)?

a\) 30842267

b\) 58230842267

c\) 30842267+

d\) (582)30842267

073D- Which of the following is a correctly formatted Inmarsat-C address
book entry for sending communications to a shoreside terminal number
276992 in New Jersey via TRT (telex country code 238)?

a\) 238276992

b\) (238)276992

c\) 238276992#

d\) 238 276992+

073E- If your vessel is in the IOR, which of the following is a
correctly formatted Inmarsat-C address book entry for sending
communications to a shoreside telex terminal number 77829 in the
Philippines (telex country code 758)?

a\) 75877829+

b\) 87375877829

c\) 75877829

d\) 58375877829

073F- If your vessel is in the AOR-E, which of the following is a
correctly formatted Inmarsat-C address book entry for sending
communications to a shoreside telex terminal number 776424 in Canada via
the TWX system (telex country code 26)?

a\) 58126776424

b\) 26776424

c\) 582776424

d\) 26776424+

Key Topic #073 Answer Key: A: d) B: b) C: a) D: a) E: c) F: b).

KEY TOPIC #074: INMARSAT-C ADDRESSING: TO SHORE (OR SHIP) FAX TERMINAL:

074A- Which of the following is a correctly formatted Inmarsat-C address
book entry for sending communications to a fax machine on a vessel in
the AOR-W?

a\) 8741500292

b\) 874436871225

c\) 5841500292

d\) 1 8741500292

074B- Which of the following is a correctly formatted Inmarsat-C address
book entry for sending communications to a fax machine number
516-229-4339 in Long Beach, CA, U.S.?

a\) 015162294339#

b\) 15162294339

c\) 015162294339

d\) 1 516-229-4339

074C- Which of the following is a correctly formatted Inmarsat-C address
book entry for sending communications to a fax machine on a vessel in
the AOR-E?

a\) 581366269025

b\) 871466269025

c\) 5811504338

d\) 8711504338

074D- Which of the following is a correctly formatted Inmarsat-C address
book entry for sending communications to a fax machine number
1424-8821-902 in the United Kingdom (voice country code 44)?

a\) 44 1424-8821-902

b\) 4414248821902

c\) 4414248821902#

d\) 44 14248821902

074E- Which of the following is a correctly formatted Inmarsat-C address
book entry for sending communications to a fax machine on a vessel in
the IOR?

a\) 5831509987

b\) 583442519372

c\) 1873442519372

d\) 8731509987

074F- Which of the following is a correctly formatted Inmarsat-C address
book entry for sending communications to a fax machine number (045)
334-5678 in Japan (voice country code 81)?

a\) 810453345678#

b\) 81(045)3345678

c\) 810453345678

d\) 81 (045) 334-5678

Key Topic #074 Answer Key: A: a) B: b) C: d) D: b) E: d) F: c).

KEY TOPIC #075: INMARSAT DISTRESS COMMUNICATIONS.

075A- Which statement is false regarding a distress request?

a\) Any distress request is automatically switched to an Inmarsat
distress working frequency.

b\) If all satellite channels are busy, one of them will be preempted by
a distress request.

c\) The NCS in each ocean region automatically monitors the processing
of such calls by other CESs in that region, and processes calls if any
anomaly exists in the system.

d\) Any request message with distress priority is automatically
recognized by the CES and a satellite channel is instantly assigned.

075B- How is a distress message normally initiated through Inmarsat?

a\) All Inmarsat units have a dedicated key that can be pressed for
immediate action.

b\) By adding the word \"DISTRESS\" in the first line of the message\'s
preamble.

c\) Certain Inmarsat units have a dedicated key that can be pressed for
immediate action, while other systems provide menu-driven features.

d\) By transmitting the distress message on the U.S. Coast Guard\'s
dedicated monitoring channel.

075C- How is a distress priority message ordinarily initiated on board
the vessel?

a\) By dialing the correct code on the telephone remote unit.

b\) By pressing one or more dedicated \"distress key/s\" on the
equipment.

c\) By contacting the CES operator, and announcing a distress condition
is in existence.

d\) By contacting the CES operator using the radiotelephone distress
procedure \"Mayday\... etc.

075D- What must be done to disconnect an incoming telex message when
voice distress communications is desired via Inmarsat-A?

a\) Depress the \"Reset\" switch to disconnect incoming message.

b\) Depressing the \"Distress\" button automatically disconnects
incoming messages.

c\) It is necessary to wait until the incoming telex message has
concluded, otherwise a system fault will occur.

d\) Momentarily turn off the system power.

075E- Which of the following two-way communications can be made through
Inmarsat without charge?

a\) A service message that advises a vessel of other ship traffic in its
vicinity.

b\) SafetyNET.

c\) Distress traffic.

d\) Vessel position information when the ship\'s GPS fails.

075F- How is ship to shore transmission of a distress priority message
in most SESs initiated?

a\) By provision of a \"distress button\" or code in the SES.

b\) By including the priority code in the preamble of the telex message.

c\) By including the priority code in the dialed number in voice
communications.

d\) By initial voice contact with the Rescue Coordination Center.

Key Topic #075 Answer Key: A: a) B: c) C: b) D: b) E: c) F: a).

KEY TOPIC #076: EGC:

076A- Upon receipt of SafetyNET messages of the distress or urgency
category on the ship\'s EGC receiver, what action is required by the
GMDSS Radio Operator?

a\) No immediate action is required as an audible tone will be generated
at the beginning and end of the transmission and a paper printout of the
message will be generated.

b\) Manually reset the alarm.

c\) No immediate action is required by the operator since the
transmission will be automatically acknowledged by the receiving vessel.

d\) A periodic alarm tone will be heard until the radio operator prints
the message from the unit\'s memory.

076B- What can be defined as the service that allows terrestrial
information providers to send general information messages to
pre-defined groups of subscribers?

a\) SafetyNET.

b\) COSPAS-SARSAT.

c\) InfoNET.

d\) FleetNET.

076C- What additional equipment provides the maximum availability for
receiving SafetyNET broadcasts when the associated Inmarsat-C is being
used for telex communications?

a\) An integrated EGC receiver with the existing Inmarsat-C equipment.

b\) A separate EGC receiver.

c\) HF SSB can be used to receive voice MSI broadcasts.

d\) Automatic switching between Inmarsat-C and EGC functions.

076D- What equipment is utilized to transmit Enhanced Group Calls?

a\) COSPAS satellite.

b\) HF SITOR shore stations.

c\) NAVTEX shore stations.

d\) Inmarsat satellite.

076E- What is the equipment arrangement that provides the maximum
availability for reception of MSI broadcasts when using Inmarsat-C for
telex communications?

a\) Integrating ECG receiver with the existing Inmarsat-C equipment.

b\) Separate EGC receiver.

c\) Redundancy using HF SSB to receive voice broadcasts.

d\) Automatic switching between Inmarsat-C and EGC functions.

076F- Which of the following statement concerning EGC configuration is
false?

a\) NAVAREA selection should be monitored and appropriately updated.

b\) The originator of MSI information can specify receipt only by
vessels within a specific geographical area, circular or rectangular.

c\) The originator of MSI information cannot specify receipt only by
vessels within a specific geographical area, circular or rectangular.

d\) GMDSS operators generally can select additional NAVAREAS to acquire
EGC messages of interest to the vessel.

Key Topic #076 Answer Key: A: b) B: d) C: b) D: d) E: b) F: c).

KEY TOPIC #077: INMARSAT EQUIPMENT FAULTS AND MAINTENANCE-1.

077A- A vessel with an 18-hour ETA to the Panama Canal on a voyage from
Miami loses the ability to communicate via Inmarsat. The most likely
cause is?

a\) The vessel has sailed beyond the coverage area of the Southbury
Shore Station.

b\) The vessel has sailed beyond the coverage area of the Eastern
Atlantic satellite.

c\) The vessel has sailed beyond the coverage area of the Western
Atlantic satellite.

d\) An equipment fault.

077B- A vessel, before transiting the Panama Canal, on a voyage from San
Diego to Miami, loses the ability to communicate via Inmarsat. The most
likely cause is:

a\) The vessel has sailed beyond the coverage area of the Southbury
Shore Station.

b\) The vessel has sailed beyond the coverage area of the Western
Atlantic satellite.

c\) The satellite orbit is beyond the usable range of the SES.

d\) The vessel has sailed beyond the coverage area of the Pacific
satellite.

077C- What can be the visual observation of a condition whereby it may
be possible to initiate a reliable telex transmission but a voice
transmission may not be possible?

a\) An indication on a meter or on the display terminal of high transmit
power.

b\) An indication of a very high antenna elevation on the display
terminal screen.

c\) An indication that the antenna has reached its maximum travel in one
direction.

d\) An indication on a meter or on the terminal of low receiver signal
strength.

077D- What maintenance function may the holder of a GMDSS Radio Operator
license perform, or supervise the performance of, on an Inmarsat-C SES?

a\) Adjust the station\'s EIRP.

b\) Remove stack deposits and other debris from the radome preventing
degraded performance.

c\) Adjust a reference oscillator or synthesizer.

d\) None of these.

077E- What maintenance function may the holder of a GMDSS Radio Operator
license perform, or supervise the performance of, on an Inmarsat-C SES?

a\) Painting the radome.

b\) Adjust the station\'s EIRP.

c\) Adjust a reference oscillator or synthesizer.

d\) Adjust any front panel controls.

077F- Which functions may the holder of a GMDSS Radio Operator License
NOT perform on the Inmarsat-C equipment?

a\) Optimize performance by adjusting the transmitter EIRP.

b\) Maintain the antenna clear of soot, paint, etc.

c\) Logon, traffic and logoff functions.

d\) Entry of position data and selection of CES.

Key Topic #077 Answer Key: A: d) B: d) C: d) D: b) E: d) F: a).

KEY TOPIC #078: INMARSAT EQUIPMENT FAULTS AND MAINTENANCE-2.

078A- What immediate remedy can be used to correct shadowing of the
satellite signal by a shipboard obstruction?

a\) Change the ship\'s course.

b\) Relocate the mast or other obstruction.

c\) Raise the transmit power level.

d\) Increase the receiver gain.

078B- A vessel loses Inmarsat-A SES operation after a large course
change. Which of the following could cause this?

a\) System loses gyro follow-up or a gyro system malfunction.

b\) Shadowing of the SES antenna by clouds or other weather formations.

c\) Misalignment of the shadow correction filter.

d\) None of these.

078C- Which statement is correct regarding a method that a vessel
experiencing problems with shadowing of the Inmarsat-A SES antenna by an
on-board obstruction could use to attempt reliable communications?

a\) Change course to make the communications.

b\) Change the Coast Station ID programming.

c\) Install a shadow correction filter.

d\) Switch from telex to Voice mode which requires lower signal strength
for proper operation.

078D- Which of the following conditions can render Inmarsat-A
communications impossible?

a\) An obstruction, such as a mast, causing disruption of the signal
between the satellite and the SES antenna when the vessel is steering a
certain course.

b\) A satellite whose signal is on a low elevation, below the horizon.

c\) Travel beyond the effective radius of the satellite.

d\) All of these.

078E- A vessel is experiencing problems tracking the satellite in an
Inmarsat-C SES. The problem could be:

a\) Extremely heavy rain/snow storms.

b\) Shadowing caused by an obstacle, such as a mast, between the SES
antenna and the satellite.

c\) The vessel is on the fringe of the coverage area of the satellite.

d\) All of these.

078F- Which functions may the holder of a GMDSS Radio Operator License
perform on the Inmarsat-C equipment?

a\) Selection of CES.

b\) Maintain the antenna clear of soot, paint, etc.

c\) Logon, traffic and logoff functions.

d\) All of these.

Key Topic #078 Answer Key: A: a) B: a) C: a) D: d) E: d) F: d).

KEY TOPIC #079: MF-HF: CONTROLS: VOLUME, SQUELCH, POWER, FREQUENCY,
MODE.

079A- Which modes could be selected to receive vessel traffic lists from
high seas shore stations:

a\) AM and VHF-FM.

b\) SSB and FEC.

c\) ARQ and FEC.

d\) VHF-FM and SSB.

079B- MF/HF Transceiver Power levels should be set:

a\) To the lowest level necessary for effective communications.

b\) To the level necessary to maximize the propagation radius.

c\) To the highest level possible so as to ensure other stations cannot
\"break-in\" on the channel during use.

d\) Both a) and c).

079C- Which statement regarding GMDSS MF/HF Transceiver frequency set-up
is true:

a\) Transmit and receive frequencies may be manually entered from the
keypad.

b\) ITU channels must be recalled from a database or memory.

c\) All consoles allow both manual keypad entry and ITU channel recall
from a database.

d\) Depending on the manufacturer, either a) or b) could be true.

079D- Which statement regarding GMDSS MF/HF Transceiver frequency set-up
is true:

a\) Transmit and receive frequencies must always be manually entered
from the keypad.

b\) Transmit and receive frequencies must always be recalled from a
database or memory.

c\) Some consoles allow both manual keypad entry and ITU channel recall
from a database or memory, while others do not.

d\) None of the above.

079E- To set-up the MF/HF Transceiver for a telex call to a coast
station, the operator must:

a\) Select J3E mode for proper Sitor operations.

b\) Select F1B mode or J2B mode, depending on the equipment
manufacturer.

c\) Select F1B/J2B modes or J3E mode, depending on whether ARQ or FEC is
preferred.

d\) None of the above.

079F- To set-up the MF/HF Transceiver for a voice call to a coast
station, the operator must:

a\) Select J3E mode for proper Sitor operations.

b\) Select F1B mode or J2B mode, depending on the equipment
manufacturer.

c\) Select F1B/J2B modes or J3E mode, depending on whether FEC or ARQ is
preferred.

d\) Select J3E mode for proper voice operations.

Key Topic #079 Answer Key: A: b) B: a) C: d) D: c) E: b) F: d).

KEY TOPIC #080: MF-HF: FREQUENCIES: SIMPLEX, DUPLEX, HALF-DUPLEX.

080A- How are paired NBDP frequencies normally used?

a\) These are normally used for FEC communications with coast radio
stations.

b\) These are normally used for ARQ communications with coast radio
stations.

c\) These are normally used only for distress communications to limit
channel interference.

d\) These are normally used for DSC communications with coast radio
stations.

080B- How are paired SSB frequencies normally used?

a\) These are normally used for FEC communications with coast radio
stations.

b\) These are normally used for ARQ communications with coast radio
stations.

c\) These are normally used for J3E communications with coast radio
stations.

d\) These are normally used for DSC communications with coast radio
stations.

080C- For general communications purposes, paired frequencies are:

a\) Normally used with private coast stations.

b\) Normally used with public coast stations.

c\) Normally used between ship stations.

d\) Normally used between private coast and ship stations.

080D- For general communications purposes, simplex frequencies are:

a\) Normally used between ship stations and private coast stations.

b\) Normally used with public coast stations.

c\) Normally used between ship stations.

d\) Both a) and c) are correct.

080E- An ITU simplex channel frequency assignment is defined as:

a\) Transmit and receive frequencies must be different.

b\) Transmit and receive frequencies must be identical.

c\) Transmit and receive frequencies may be different, depending on
whether communications are ship-shore or ship to ship.

d\) Transmit and receive frequencies are different regardless of
emission mode.

080F- An ITU duplex channel frequency is defined as:

a\) Transmit and receive frequencies may be different, depending on
whether communications are ship-shore or ship to ship.

b\) Transmit and receive frequencies must be identical.

c\) Transmit and receive frequencies must be different.

d\) Transmit and receive frequencies may be different, depending on
whether communications are ship-shore or ship to ship.

Key Topic #080 Answer Key: A: b) B: c) C: b) D: d) E: b) F: c).

KEY TOPIC #081: MF-HF: ITU CHANNELS:

081A- Which of the following defines \"ITU Channel 1216\"?

a\) Ch-12 in the 16 MHz band.

b\) Ch-1216 in the MF band.

c\) Ch-16 in the 12 MHz band.

d\) This would indicate the 16th channel in the 12 MHz band, but Ch-1216
does not yet exist as there are currently only 15 possible channels.

081B- Which of the following is a valid 22-MHz ITU Channel?

a\) HF Ch-2206.

b\) VHF Ch-22.

c\) Ch-22A when used for VTS communications.

d\) Ch-70 (DSC only).

081C- What is meant by the term \"ITU channel\"?

a\) This refers to a vessel\'s selcall number.

b\) This refers to an internationally standardized assignment of
frequency pairings for common use.

c\) This refers to VHF channels 1-28 and 60-88.

d\) None of the above.

081D- ITU channel 1604 would mean:

a\) Ch-16 in the 4 MHz band.

b\) Ch-4 in the 16 MHz band.

c\) Ch-1604 in the MF band.

d\) 1604 is the Channel number. It has no relevance to frequency bands.

081E- Which is a valid ITU Designation?

a\) Ch-1604

b\) Ch-706

c\) \"Approved for GMDSS Stations\".

d\) \"Type Approved Under FCC Part 80 Rules and Regulations\".

081F- ITU channels are:

a\) Frequency assignments specific to U.S. vessels only.

b\) VHF-FM frequencies.

c\) International Traffic Utility frequencies.

d\) An international designation of specific frequencies.

Key Topic #081 Answer Key: A: c) B: a) C: b) D: b) E: a) F: d).

KEY TOPIC #082: MF-HF: VOICE & TELEX CHANNEL SEPARATION:

082A- Which statement regarding bandwidth and channel spacing is
correct:

a\) Channel spacing values are a function of bandwidth values.

b\) Bandwidth values are a function of Channel spacing values.

c\) Channel spacing values are not a function of bandwidth values.

d\) Bandwidth & channel values do not vary with emission mode.

082B- The purpose of ITU channel spacing is:

a\) To maximize the number of voice & telex channels available.

b\) To minimize the possibility of interference from adjacent channels.

c\) To make most efficient use of the radio spectrum by using voice
channels rather than telex channels.

d\) To make most efficient use of the radio spectrum by using telex
channels rather than voice channels.

082C-Which statement regarding channel spacing and bandwidth is true?

a\) Voice bandwidth is greater than telex bandwidth and therefore Voice
channel spacing values are less than telex channel spacing values.

b\) Telex bandwidth is greater than voice bandwidth and therefore telex
channel spacing values are less than voice channel spacing values.

c\) Both telex bandwidth and channel spacing values are less than voice
bandwidth and channel spacing values.

d\) Both telex bandwidth and channel spacing values are greater than
voice bandwidth and channel spacing values.

082D- The proper sequence of channel spacing from narrow to widest is:

a\) SSB Voice, NBDP Sitor, VHF-FM Voice.

b\) VHF-FM Voice, NBDP Sitor, SSB-Voice.

c\) NBDP Sitor, VHF-FM Voice, SSB-Voice.

d\) NBDP Sitor, SSB-Voice, VHF-FM Voice.

082E- Communications with an emission of F1B/J2B would typically have a
channel spacing of:

a\) 0.5 kHz

b\) 0.3 kHz

c\) 2.8 kHz

d\) 3.0 kHz

082F- Communications with an emission of J3E would typically have a
channel spacing of:

a\) 0.5 kHz

b\) 0.3 kHz

c\) 2.8 kHz

d\) 3.0 kHz

Key Topic #082 Answer Key: A: a) B: b) C: c) D: d) E: a) F: d).

KEY TOPIC #083: MF-HF: MODULATION, BANDWIDTH & EMISSIONS.

083A- For RF communications, \"modulation\" is best defined as:

a\) The combination of information or intelligence with a carrier
frequency.

b\) Using a single carrier frequency with the proper power level.

c\) Setting up the transceiver with the correct bandwidth to ensure
proper communications.

d\) The combination of the received frequency and oscillator frequency
in the mixer.

083B-For RF communications, \"bandwidth\" is best defined as:

a\) The modulation technique required to insure proper ITU channel
spacing.

b\) The emission designation resulting from the desired modulation
technique.

c\) The portion of the radio spectrum consumed by a particular emission
selection and modulation technique.

d\) The portion of the radio spectrum reserved for frequency allocations
by the ITU.

083C- In an AM signal using voice:

a\) Varying the amplitude of the carrier and employing both sidebands
without the carrier.

b\) There is a constant amplitude carrier with complex upper and lower
sidebands varying in amplitude and frequency.

c\) Varying only the amplitude of the carrier, depending on Double or
Single-Sideband operations.

d\) Varying the amplitude of the carrier and employing both sidebands
and the carrier.

083D- In FM communications, the information is applied to the carrier
by:

a\) Varying the amplitude or the frequency of the carrier, depending on
Double or Single-Sideband operations.

b\) Varying the frequency of the carrier.

c\) Varying only the frequency of the carrier, depending on Double or
Single-Sideband operations.

d\) Varying the amplitude of the carrier.

083E- The proper sequence of emissions corresponding to the sequence
AM-Voice DSB, SSB-Voice without carrier, USB-Voice with carrier and
FM-Voice, is:

a\) A3E, H3E, J3E, F3E.

b\) A3E, J3E, H3E, F3E.

c\) J3E, H3E, A3E, F3E.

d\) H3E, A3E, J3E, F3E.

083F- The proper sequence of emissions corresponding to the sequence
SSB-Voice without carrier, USB-Voice with carrier, FM-Voice and Sitor
telex is:

a\) H3E, J3E, F3E, F1B.

b\) J3E, H3E, F1B, F3E.

c\) J3E, H3E, F3E, F1B.

d\) H3E, J3E, F1B, F3E.

Key Topic #083 Answer Key: A: a) B: c) C: b) D: b) E: b) F: c).

KEY TOPIC #084: MF-HF: VOICE OPERATIONS-CALLING A COAST STATION.

084A- When placing a SSB MF/HF call to a Coast Station, you should
always:

a\) Choose the closest station to ensure a quick connection.

b\) Make sure the frequency is not occupied.

c\) Tune the transmitter on another frequency.

d\) Wait until the coast station sends his Traffic List.

084B- How are high seas (HF) radiotelephone communications initially
established between a vessel and a public correspondence station?

a\) The vessel listens for \"free signals\" and calls the public
correspondence station on the NBDP calling channel with the strongest
marker signal.

b\) The vessel calls the public correspondence station on VHF Channel 16
and the two stations then switch to the working channel.

c\) Public Correspondence Stations operate NBDP only.

d\) The vessel calls and establishes voice contact with the public
correspondence station on a channel that the station is known to
monitor, and the two stations then proceed with their business.

084C- What is the best procedure for calling another ship station using
HF radiotelephone when the signals are weak but readable?

a\) On a properly selected ITU channel, give the call sign of the ship
being called three times using the ICAO alphabet, and the words \"this
is\" followed by the call sign of the ship initiating the call three
times, using the ICAO alphabet, and concluding with \"over.\"

b\) Give the name of the ship being called three times, and the words
\"this is\" followed by the name of the ship initiating the call three
times, and concluding with \"over.\"

c\) Instruct the nearest public correspondence station to add the
desired ship\'s call sign to the station\'s traffic list.

d\) Notify the local vessel traffic service control station of your
intention to contact a specific vessel, and request the VTS operator
place the call on channel 22A.

084D- What is the correct procedure for calling a coast radio station
using HF radiotelephone?

a\) On a properly selected ITU channel, give the name of the coast radio
station being called three times, and the words \"this is\" followed by
the name of the ship initiating the call three times, and concluding
with \"over\".

b\) Contact the nearest U.S.C.G. station to add the desired ship\'s call
sign to the station\'s traffic list.

c\) On a properly selected ITU channel, give the call sign of the coast
radio station being called three times using the ICAO alphabet, and the
words \"this is\" followed by the call sign of the ship initiating the
call three times, using the ICAO alphabet, and concluding with \"over\".

d\) Request the VTS operator place the call on channel 22A.

084E- Through which coast radio station(s) may a U.S.-flag merchant
vessel communicate?

a\) Any coast radio station in the world that is licensed to provide
such communications.

b\) Any coast radio station in the world that is licensed to provide
such communications, but prior authorization must be obtained for a
U.S.-flag merchant vessel to communicate through a non-U.S. station.

c\) The U.S. Coast Guard coordinates the communications and assigns the
working channel.

d\) Any coast radio station in the world that has been commissioned to
provide such communications.

084-F What is the best source of information to find changes or
additions to the routine communications frequencies of a Commercial
Radio Station?

a\) ITU List of Coast Stations Part IV.

b\) GMDSS Master Plan of Radio Stations.

c\) FCC Part 80.

d\) ITU List of Ship Stations Part VII.

Key Topic #084 Answer Key: A: b) B: d) C: a) D: c) E: a) F: a).

KEY TOPIC #085: MF-HF: DSC CONTROLLER CALL PROGRAMMING:

085A- The purpose of the MF/HF DSC controller is?

a\) Providing for the formatting and transmission of outgoing DSC calls.

b\) Permitting control of transceiver operations via an interface.

c\) Providing the scanning watch receiver capability on the 6 MF/HF DSC
frequencies.

d\) Both a) and b) are crucial functions of a DSC Controller.

085B- A \"Distress Hot Key\" MF/HF DSC Distress Alert:

a\) May go out on 2187.5 kHz or may go out on another DSC frequency,
depending on the manufacturer.

b\) Must go out on 2187.5 kHz and 8414.5 kHz to trip DSC alarms on the
mandatory MF/HF DSC watch frequencies.

c\) Must go out on 2187.5 kHz to alert the nearest vessels and coast
stations.

d\) None of the above.

085C- A Distress Priority DSC call may be formatted and transmitted
specifying and requesting:

a\) Nature of Distress, vessel position, follow-on frequency, only voice
follow-on communications.

b\) Nature of Distress or alternate frequency but not both in a single
call, vessel position or alternate frequency/emission but not both in a
single call, voice or telex follow-up communications.

c\) Nature of Distress or alternate frequency but not both in a single
call, vessel position or alternate frequency/emission but not both in a
single call, only telex follow-up communications

d\) Nature of Distress, vessel position, follow-on frequency, only telex
follow-on communications.

085D- A multi-frequency MF/HF DSC Distress Alert:

a\) Must be transmitted in ascending order of propagation radius to
alert nearby ships first.

b\) May be transmitted on the mandatory MF/HF DSC watch frequencies
first, and then on the others.

c\) Either a) or b), depending on the manufacturer.

d\) May be transmitted in any order programmed by the GMDSSS operator.

085E- To make a call to another vessel requesting voice communications
regarding important company business, the GMDSS operator should:

a\) Select Urgent priority, enter other vessel\'s MMSI, specify legal
alternate frequency, F1B emission and transmit the properly formatted
DSC call.

b\) Select Routine priority, enter other vessel\'s MMSI, specify legal
alternate frequency, J2B emission and transmit the properly formatted
DSC call.

c\) Select Routine priority, enter own vessel\'s MMSI, specify legal
alternate frequency, J3E emission and transmit the properly formatted
DSC call.

d\) None of the above.

085F- To make a call to another vessel requesting telex communications
regarding important company business, the GMDSS operator should:

a\) Select Routine priority, enter other vessel\'s MMSI, specify legal
alternate frequency, F1B emission and transmit the properly formatted
DSC call.

b\) Select Urgent priority, enter other vessel\'s MMSI, specify legal
alternate frequency, F1B emission and transmit the properly formatted
DSC call.

c\) Select Routine priority, enter own vessel\'s MMSI, specify legal
alternate frequency, F1B emission and transmit the properly formatted
DSC call.

d\) Select Routine priority, enter other vessel\'s SelCall for telex
specify legal alternate frequency, F1B emission and transmit the
properly formatted DSC call.

Key Topic #085 Answer Key: A: d) B: a) C: b) D: c) E: d) F: a).

KEY TOPIC #086: MF-HF: SITOR-NBDP #1: DEFINITIONS:

086A- What is meant by the acronym ATOR?

a\) Automatic Telex Over Radio.

b\) AMVER Transmittals Over Radio.

c\) Amateur Telex Over Radio.

d\) None of the above.

086B- Which of the following acronyms refers to a communications system
that is not based on some form of telex?

a\) NAVTEX.

b\) SITOR.

c\) NAVCOMSTA.

d\) NBDP.

086C- What does the term FEC mean in SITOR communications?

a\) Field Effect Correction

b\) Forward Error Check

c\) Forward Error Character.

d\) None of the Above.

086D- What term is nearly synonymous with ATOR?

a\) NAVTEX.

b\) SITOR.

c\) AMTOR.

d\) NBDP.

086E- The acronym SITOR stands for:

a\) Simplified Telephony Over Radio.

b\) Simplex Telex Over Radio or Simplex Teleprinter over Radio.

c\) Simplified Telex Over Radio.

d\) Simplex Telephony Over Radio.

086F-What does the term \"ARQ\" mean in SITOR operations?

a\) Automation Repeat Request.

b\) Automatic Repeat Request.

c\) Automaton Repeat Request.

d\) Automatic Request Repeat.

Key Topic #086 Answer Key: A: a) B: c) C: d) D: b) E: b) F: b).

KEY TOPIC #087: MF-HF SITOR-NBDP #2: TECHNICAL CHARACTERISTICS:

087A- Which of the following statements concerning SITOR communications
is true?

a\) ARQ transmissions are made in data groups consisting of
three-character blocks.

b\) ARQ transmissions are acknowledged by the Information Receiving
Station only at the end of the message.

c\) ARQ communications rely upon error correction by time diversity
transmission and reception.

d\) Forward error correction is an interactive mode.

087B- Which of the following statements concerning SITOR communications
is true?

a\) FEC transmissions are made in data groups consisting of
three-character blocks.

b\) FEC transmissions require a \"phasing\" or \"handshaking\" process
prior to character transmission.

c\) FEC transmissions rely upon error correction by time diversity
transmission and reception.

d\) FEC transmissions rely upon parity and \"Repeat Requests\" to ensure
error correction.

087C- Which statement best defines the SITOR acronym \"ARQ\"?

a\) Error correction for one-way telex broadcasts of weather or
navigation information.

b\) Error Correction when 2 stations are in direct & phased telephone
communications with each other.

c\) Either a) or b), depending on transceiver mode selection.

d\) None of the above.

087D- Which statement best defines the SITOR acronym \"FEC\"?

a\) Error correction for one-way telex broadcasts of weather or
navigation information.

b\) Error Correction when 2 stations are in direct & phased telephone
communications with each other.

c\) Error Correction when 2 stations are in direct & phased telex
communications with each other.

d\) None of the above.

087E- The purpose of \"parity\" in SITOR communications is?

a\) Error correction in FEC weather and navigational broadcasts.

b\) Error correction in ARQ communications.

c\) Error correction in NAVTEX broadcasts.

d\) All of the above are true.

087F- \"SITOR\" communications are based on a digital code system:

a\) Consisting of 7 bits, with four ones and three zeros.

b\) Consisting of 7 bits, with four zeros and three ones.

c\) Consisting of 5 bits telex and 8 bits Fax.

d\) Consisting of 5 bits for ship stations and 7 bits for shore
stations.

Key Topic #087 Answer Key: A: a) B: c) C: d) D: a) E: d) F: b).

KEY TOPIC #088: MF-HF: ARQ OPERATION #1: CALLING A COAST STATION.

088A- Which of the following would be a valid selcall for use in ARQ
communications?

a\) 1106

b\) 212420 WHAQ X.

c\) Four marks (ones) and three spaces (zeroes) forming the binary
signal \"1001101\".

d\) This is established by the communications protocol used with the
modem.

088B- Once ARQ communication with the coast radio station has been
established, which of the following exchanges will most likely take
place?

a\) The vessel then requests the coast radio station\'s selcall so that
communication can be set up on the appropriate working channel.

b\) Since communication has already shifted to the working channel, the
vessel then transmits the subscriber number and text of the message to
be sent for the coast radio station to store and forward.

c\) After exchanging answerbacks with the vessel, the coast radio
station transmits \"GA+\".

d\) None of the above.

088C- Which of the following methods will give a GMDSS Radio Operator
the best indication of whether ARQ communication can be established with
a coast radio station?

a\) Referring to propagation charts will tell the Operator when the
eruption of communication shattering solar flares will occur.

b\) Selecting a frequency in the MF band averts interference from severe
static discharges.

c\) Monitor the coast radio station\'s \"free signals\" and call on the
frequency on which the loudest and most consistent signals are heard.

d\) Re-position the radome\'s antenna toward the coast radio station and
press the \"call request\" button.

088D- When placing a telex call to a Coast Station, you should always:

a\) Choose the closest station.

b\) Make sure the frequency is not occupied with normal traffic.

c\) Tune the transmitter on another frequency.

d\) Wait until the coast station sends his Traffic List.

088E- What is the best method for a GMDSS Radio Operator to determine
which SITOR station to contact for the purpose of sending a chargeable
message or cable?

a\) Listen to each station\'s voice announcement and determine which
channel(s) will be monitored.

b\) Listen to each station\'s free signals, and call the station
generating the loudest free signal marker.

c\) Listen to each station\'s MSI broadcast to determine which public
correspondence station to contact.

d\) Listen to the U.S. Coast Guard\'s traffic list to determine which
Coast Guard station will handle commercial traffic.

088F- Which statement is correct regarding HF NBDP under GMDSS?

a\) Safety communications by direct-printing telegraphy should be in the
ARQ mode when communicating with the U.S. Coast Guard or other coast
stations on channels that they normally guard.

b\) Distress communications other than directly to the Coast Guard or
other coast stations on the channels that they normally guard, should be
in the broadcast SSB mode.

c\) The ARQ mode may be used subsequently to the FEC mode when it is
advantageous to do so.

d\) Distress communications other than directly to the Coast Guard or
other coast stations on the channels that they normally guard, should be
in the broadcast FEC or SSB mode.

Key Topic #088 Answer Key: A: a) B: c) C: c) D: b) E: b) F: a).

KEY TOPIC #089: MF-HF: ARQ OPERATION #2: ANSWERBACKS:

089A- After establishing contact with a Coast Station on an available
channel, which of the following exchanges take place?

a\) The vessel will request the shore station\'s answerback to confirm
it has reached the correct station, then the shore station operator will
request billing authorization.

b\) The ship station begins transmitting the text.

c\) The coast station transmits its answerback, asks for the ship\'s
answer back and then transmits GA+.

d\) None of these.

089B- During Sitor ARQ operations through a coast station, what should
the GMDSS operator do during the \"Automatic Exchange of Answerbacks.\"

a\) Send a \"WRU\" then a \"Here is\" when requested by the coast
station.

b\) Do nothing other than wait for a GA+ prompt.

c\) Send the necessary message file and then wait for time and charges.

d\) None of the above.

089C- Assuming sending a direct telex message to a shore-based office,
which sequence of events best describes a complete ARQ telex exchange
with a coast station?

a\) Initiate call, observe phasing, Automatic Exchange of Answerbacks,
send message, send KKKK to terminate the telex link, receive MRN & Time
and charges.

b\) Initiate call, observe phasing, Automatic Exchange of Answerbacks,
send DIRTLX command with zero then telex country code, telex number,
send message, send KKKK to terminate the telex link, receive MRN & Time
and charges.

c\) Initiate call, observe Automatic Exchange of Answerbacks, send
message, send KKKK to terminate radio link, receive MRN & Time and
charges.

d\) Initiate call, observe phasing, Automatic Exchange of Answerbacks,
send message, send KKKK to terminate radio link, receive MRN & Time and
charges.

089D- For ARQ communications with a Public Correspondence Coast Station,
which sequence of events best describes reaching the point in time where
the text of telex communications should be sent.

a\) Transceiver setup, SelCall selection, Initiate Call, Automatic
Exchange of Answerbacks, OPR+, operator entry of the appropriate
automatic telex code.

b\) Transceiver setup, Automatic Exchange of Answerbacks, OPR+, operator
entry of the appropriate automatic telex code.

c\) Transceiver setup, SelCall selection, Initiate Call, Exchange of
Station Answerbacks, GA+?, enter

DIRTLX xy+, MOM, MSG+? and exchange of terminal answerbacks.

d\) Transceiver setup, Automatic Exchange of Answerbacks, GA+, operator
entry of the appropriate automatic telex code.

089E- During ARQ communications, A Coast station will likely break the
phased radio connection:

a\) If the error percentage of repeat requests becomes too high.

b\) If the automatic exchange of answerbacks is interrupted by keyboard
entries.

c\) If either a) or b) takes place.

d\) If the operator enters \"KKKK.\"

089F- During ARQ communications, A Coast station will likely break the
phased radio connection:

a\) If the error percentage of repeat requests becomes too high.

b\) If the automatic exchange of answerbacks is interrupted by keyboard
entries.

c\) If the operator enters \"BRK+.\"

d\) If any of the above actions takes place.

Key Topic #089 Answer Key: A: c) B: b) C: b) D: c) E: c) F: d).

KEY TOPIC #090: MF-HF: ARQ OPERATION #3: OPERATING CODES & PROCEDURES:

090A- Which of the following keystrokes or characters is sent as part of
ARQ communications to end the radio link?

a\) Four \"N\"s, i.e. \"NNNN\".

b\) Four \"K\"s, i.e. \"KKKK\".

c\) \"BRK+\".

d\) Five periods (\". . . . .\").

090B- Which of the following keystrokes or characters is sent as part of
ARQ communications to signal the end of communications with a land based
telex terminal?

a\) Four \"N\"s, i.e. \"NNNN\".

b\) Four \"K\"s, i.e. \"KKKK\".

c\) \"BRK+\".

d\) Five periods (\". . . . .\").

090C- What character(s) are transmitted to switch control from a station
currently transmitting, over to the receiving station during ATOR
communications in the ARQ mode?

a\) \"+?\"

b\) \"GA\"

c\) ENTER

d\) END

090D- Which character(s) must follow most command codes to a coast
station using ATOR?

a\) +

b\) \#

c\) \*

d\) GA+

090E- Which characters are sent by the shore station to indicate that it
has shifted control to and that it is awaiting instructions from the
vessel?

a\) WRU

b\) GA+?

c\) KKKK

d\) \". . . .\"

090F- All country codes which are transmitted by MF/HF Sitor are
preceded by which character(s)?

a\) 0

b\) 00

c\) +

d\) DIR

Key Topic #090 Answer Key: A: c) B: b) C: a) D: a) E: b) F: a).

KEY TOPIC #091: MF-HF: ARQ OPERATION #4: OPERATING CODES & OPERATING
PROCEDURES

091A- Which of the following keystrokes or characters is sent as part of
ARQ communications to switch information transmission control from one
station to the other?

a\) The plus and question mark keys (\"+\", \"?\").

b\) The go-ahead (\"GA\") command.

c\) The \"ENTER\" key.

d\) The \"END\" key.

091B- Which of the following keystrokes or characters follows most
commands in ARQ communications when working an automated Coast Station?

a\) The plus (\"+\") key.

b\) The go-ahead (\"GA\") command.

c\) The \"ENTER\" key.

d\) The \"END\" key.

091C- Which characters are sent by the ship station when operating HF
telex, to indicate a desire to send an AMVER message?

a\) MSG+

b\) DIRTLX+

c\) AMV+

d\) OPR+

091D- Which characters are sent by the ship station to indicate a desire
to send a message via a direct connection to a shoreside telex
subscriber?

a\) MSG+

b\) DIRTLX0xxyyyy+

c\) AMV+

d\) OPR+

091E- What is the procedure used to terminate the radio circuit?

a\) The END command.

b\) CONTROL, ALT AND DELETE keys.

c\) BRK+.

d\) Shut off the telex printer.

091F- What are the characters that are transmitted to terminate a direct
telex connection in SITOR operation?

a\) \". . . .\"

b\) KKKK

c\) END+

d\) EOM

Key Topic #091 Answer Key: A: a) B: a) C: c) D: b) E: c) F: b).

KEY TOPIC #092: MF-HF: ARQ OPERATION #5: TECHNICAL CHARACTERISTICS:

092A- Which of the following statements concerning SITOR communications
is true?

a\) In ARQ, each character is transmitted twice, about 250 milliseconds
apart.

b\) In ARQ, the \"information sending station\" transmits a block of
three characters twice, about 250 milliseconds apart.

c\) In ARQ, the \"information sending station\" will transmit a block of
three characters that the receiving station will subsequently
acknowledge or request be retransmitted.

d\) SITOR communications can be used to contact a NAVTEX transmitting
station when requesting a repeat transmission of a missed NAVTEX
message.

092B- What statement is true regarding the exchange between two parties
engaged in SITOR communications?

a\) In ARQ, each character is transmitted twice, with the second
displaced in time from the first.

b\) In ARQ, the \"sending\" station transmits a block of three
characters and the \"receiving\" station responds with a

one character acknowledgement. Following this the \"transmitting\"
station will send a new block.

c\) In ARQ, the \"sending\" station transmits a block of three
characters and the \"receiving\" station responds with either a
one-character acknowledgement of the receipt of a valid block or a
negative acknowledgement indicating that the block should be re-sent.
Following this the \"transmitting\" station will send a new block or
retransmit the previous block, as required.

d\) Broadcasts of Marine Safety Information, traffic lists, etc. can be
copied by the receiving station in ARQ mode.

092C- Of the following, which is true of SITOR ARQ mode direct printing
radioteletype transmission?

a\) Each data block consists of three characters.

b\) The acceptance code consists of three characters.

c\) A continuous data stream is transmitted.

d\) Forward error correction reduces the number of errors.

092D- Which of the following is true of SITOR ARQ mode?

a\) This is an interactive mode.

b\) Each character is repeated three times.

c\) Each character is transmitted twice.

d\) This mode is generally used to broadcast messages.

092E- What should happen when an RQ code is received by a SITOR station
which is sending message traffic?

a\) The last block will be resent.

b\) The next block will be sent.

c\) The data link will break.

d\) The acknowledge light should illuminate.

092F- Which of the following is true of Sitor ARQ mode:

a\) The ship station sends a group of 3 characters twice and then waits
for an \"RQ\" signal to indicate proper receipt before continuing
transmission.

b\) The Ship station sends each character twice, using a Time Diversity
system to ensure proper parity.

c\) The ship station sends a group of 3 characters, the shore station
checks for proper parity and then requests the same group be resent to
enable error correction.

d\) The ship station sends a group of 3 characters, the shore station
checks for proper parity. If parity is ok, the shore station indicates
readiness for transmission of the next 3 characters.

Key Topic #092 Answer Key: A: c) B: c) C: a) D: a) E: a) F: d).

KEY TOPIC #093: MF-HF: ADDRESSING MODES: DIRTLX, STORE-FORWARD, ETC.

093A- Which of the following keystrokes or characters is sent as part of
ARQ communications to request a direct telex call to a shore-based
location?

a\) \"MSG+\"

b\) \"GA+\"

c\) \"ENTER\"

d\) \"DIRTLX023123456+\"

093B- The DIRTLX command should be given to a coast station at what
point in time?

a\) Immediately following the Automatic Exchange of Answerbacks.

b\) After receipt of the Go Ahead indication followed by the Automatic
Exchange of Answerbacks.

c\) Sent at the beginning of the message to request a direct telex
connection.

d\) After receipt of the Go Ahead indication following the Automatic
Exchange of Answerbacks.

093C- Which Automatic telex command should be sent by a ship station
during Sitor operations to properly address a weather report to the
national weather authority?

a\) WX+ followed by the text of the report.

b\) OBS+

c\) OBS+ then MSG+ to indicate weather report.

d\) GA+ then OBS+.

093D- Which of the following would be a valid automatic telex code and
number for a request for a real-time telex connection to a shore-based
telex terminal?

a\) DIRTLX023424998+.

b\) DIRTLX then waits for MSG+ to dial 023419645+.

c\) DIRTLX23122445+.

d\) DIRTLX then after GA+ then sends telex number.

093E- When requesting a direct telex connection to a vessel\'s
Inmarsat-A terminal, (i.e. making a sitor call to an Inmarsat-A unit)
the GMDSS operator must:

a\) DIRTLX, 00, Ocean Area Code, telex number, +.

b\) DIRTLX, 0, Ocean Area Code, telex number, +.

c\) DIRTLX, 0, Country code, telex number, +.

d\) None of the above.

093F- To correctly address a Sitor message and transmit it \"live\" to a
shore-based office the GMDSS operator would dial which sequence:

a\) DIRTLX051440344+

b\) DIRTLX0051440344+

c\) DIRTLX581440344+

d\) DIRTLX05811500260+

Key Topic #093 Answer Key: A: d) B: d) C: b) D: a) E: b) F: a).

KEY TOPIC #094: MF-HF: FEC OPERATION #1:

094A- Which of the following statements concerning SITOR communications
is true?

a\) Communication is established on the working channel and answerbacks
are exchanged before FEC broadcasts can be received.

b\) Two-way communication with the coast radio station using FEC is not
necessary to be able to receive the broadcasts.

c\) Weather broadcasts cannot be made in FEC because sending each
character twice would cause the broadcast to be prohibitively long.

d\) None of the above.

094B- Which of the following is true of SITOR FEC in the presence of
impulse-type interference?

a\) Data flow rate depends on signal propagation.

b\) Idle characters are sent upon request.

c\) Transmitter and receiver cannot synchronize.

d\) The error rate is reduced by time diversity reception.

094C- Which of the following statements concerning SITOR communications
is true?

a\) FEC requests are first acknowledged by the vessel\'s transmitter
before broadcasts can be received.

b\) FEC mode broadcasts can be received without the transmitter being
turned on.

c\) Weather broadcasts are always made in ARQ mode to ensure reception.

d\) None of these.

094D- The sequence ARQ, FEC, SFEC best corresponds to which of the
following sequences?

a\) One-way communications to a single station, one-way communications
to all stations, two-way communications.

b\) One-way communications to all stations, two-way communications,
one-way communications to a single station.

c\) Two way communications, one-way communications to all stations,
one-way communications to a single station.

d\) Two way communications, One way communications to a single station,
One way communications to all stations.

094E- The sequence BFEC, SFEC, ARQ best corresponds to which of the
following sequences?

a\) One-way communications to a single station, one-way communications
to all stations, two-way communications.

b\) One-way communications to all stations, two way communications,
one-way communications to a single station.

c\) Two way communications, one-way communications to all stations,
two-way communications.

d\) None of the above.

094F- Selective FEC communications (SFEC) are employed when:

a\) Multiple stations without a group selcall must receive
communications without using their transmitters (Radio Silence).

b\) Multiple stations must receive communications by using their
transmitters to achieve phasing.

c\) An individual station must receive communications without using any
transmitters (Radio Silence).

d\) An individual station must receive communications by using their
transmitter to achieve phasing and block other stations from breaking
in.

Key Topic #094 Answer Key: A: b) B: d) C: b) D: c) E: d) F: c).

KEY TOPIC #095: MF-HF: FEC OPERATION #2:

095A- If the vessel is within range of NAVTEX broadcasts and both the
Inmarsat-C and the NAVTEX receiver are inoperative the GMDSS operator
should:

a\) Select 518 kHz ARQ telex on the MF/HF console to receive MSI.

b\) Request repairs of the Sat-C system and wait until within range of
NAVTEX.

c\) Select an HF MSI frequency and ARQ telex mode to receive MSI.

d\) Select 518 kHz FEC telex on the MF/HF console to receive MSI.

095B- If the vessel is beyond range of NAVTEX broadcasts and the Sat-C
system fails, the GMDSS operator must:

a\) Select 518 kHz ARQ telex on the MF/HF console to receive MSI.

b\) Request repairs of the Sat-C system and wait until within range of
NAVTEX.

c\) Select an HF MSI frequency and FEC telex mode to receive MSI.

d\) Select 518 kHz FEC telex on the MF/HF console to receive MSI.

095C- If the vessel is experiencing atmospheric interference with NAVTEX
broadcasts, especially in the tropics, the GMDSS operator should:

a\) Select one of the 6 HF MSI frequencies and set-up the transceiver in
ARQ telex mode.

b\) Select one of the 6 MF MSI frequencies and set-up the transceiver in
FEC telex mode.

c\) Select one of the 8 HF MSI frequencies and set-up the transceiver in
FEC telex mode.

d\) Select the MF MSI frequency dedicated to tropical MSI and set-up the
transceiver in FEC telex mode.

095D- Why must the GMDSS operator be able to set-up FEC & ARQ modes and
differentiate between them?

a\) The proper mode must be selected for reception of HF MSI.

b\) The proper mode must be selected for follow-on telex communications
in a distress situation.

c\) The ARQ telex mode must be selected for follow-on telex
communications in a distress situation and the FEC telex mode selected
for reception of HF MSI.

d\) Both a) and b) are correct.

095E- FEC Sitor transmissions might be used to?

a\) Receive Coast station traffic lists, NAVTEX and VHF MSI broadcasts.

b\) Send and receive distress telex communications, receive HF MSI and
NAVTEX.

c\) Receive weather messages or Coast Station traffic lists.

d\) Either b or c might be possible.

095F- FEC NBDP transmissions are normally used to?

a\) Receive Coast station traffic lists, NAVTEX and VHF MSI broadcasts.

b\) Receive HF MSI and NAVTEX.

c\) Receive weather messages, Coast Station traffic lists and company
messages.

d\) None of the above.

Key Topic #095 Answer Key: A: d) B: c) C: c) D: d) E: d) F: b).

KEY TOPIC #096: MF-HF: PROPAGATION #1: DAYTIME, NIGHT TIME,
WINTER-SUMMER:

096A- The \"short rules\" of propagation necessary to select the
appropriate frequency band are:

a\) Shorter Distance = Higher Frequency, Daytime = Higher Frequency.

b\) Shorter Distance = Higher Frequency, Daytime = Lower Frequency.

c\) Shorter Distance = Lower Frequency, Daytime = Higher Frequency.

d\) Shorter Distance = Lower Frequency, Daytime = Lower Frequency.

096B- GMDSS operators should learn which of the following propagation
\"rules of thumb\"?

a\) Longer distance = lower frequency, Shorter Distance = higher
frequency; Daytime = higher frequency, nighttime = lower frequency.

b\) Longer distance = lower frequency, Shorter Distance = lower
frequency, Daytime = lower frequency, nighttime = higher frequency.

c\) Longer distance = higher frequency, Shorter Distance = lower
frequency, Daytime = higher frequency, nighttime = lower frequency.

d\) Longer distance = higher frequency, Shorter Distance = higher
frequency, Daytime = lower frequency, nighttime = higher frequency.

096C- Which of the following is a source of solar flux conditions that
can be used with propagation software as an aid in predicting the best
frequency band to use for HF radio communications?

a\) Hourly announcements from WWV and WWVH.

b\) Hourly forecast broadcasts from CHU.

c\) Every public correspondence station provides propagation forecasting
services.

d\) Doppler weather satellite broadcasts.

096D- GMDSS operators should routinely focus on the factors affecting
propagation in what priority?

a\) Distance & Time of Day, Seasonal variations, Sunspot cycle, Solar
flare alerts.

b\) Sunspot cycle, Distance & Time of Day, Seasonal variations, Solar
flare Alerts.

c\) Solar flare alerts, Distance & Time of Day, Sunspot cycle, Seasonal
variations.

d\) Solar flare alerts, Sunspot cycle, Seasonal variations, Distance &
Time of Day.

096E- Which statement concerning frequency band selection and
propagation most corresponds with standard practice.

a\) Maximum Usable Frequency (MUF) and Optimum Usable Frequency (OUF)
should be calculated prior to setting up the transceiver.

b\) Propagation rules, Sunspot cycle status and seasonal variations
(winter & summer) must always be employed to calculate the proper band
selection.

c\) Propagation \"rules of thumb\" are usually sufficient for routine
operations.

d\) Propagation \"rules of thumb\" should be combined with Solar flare
alerts to determine band selection.

096F- To ensure effective communications, GMDSS operators should:

a\) Rely on the equipment calculations of Optimum Usable Frequency.

b\) Employ the short rules of propagation selection.

c\) Rely on previous successful communications on the selected frequency
band.

d\) Taken together, both b and c are good operational practices.

Key Topic #096 Answer Key: A: c) B: c) C: a) D: a) E: c) F: d).

KEY TOPIC #097: MF-HF: PROPAGATION #2: DAYTIME, NIGHT TIME,
WINTER-SUMMER:

097A- A ship at anchor has been communicating effectively with a shore
station approximately 500 miles (805 km) distant on a frequency in the
16 MHz band periodically throughout the day. Toward the late afternoon
and evening, what effect should be noticed?

a\) Communications should be maintained with slight improvement in the
signal received from the shore station.

b\) The gray line effect will prevent communications after dark.

c\) Communications should gradually deteriorate and become impossible on
this frequency at night.

d\) Communications should improve and peak at night.

097B- A ship at anchor has been communicating marginally with a shore
station approximately 200 miles (322 km) distant on a frequency in the 4
MHz band periodically throughout the day. Toward the late afternoon and
evening, what effect should be noticed?

a\) Communications should be maintained with slight improvement in the
signal received from the shore station.

b\) Communications should slowly deteriorate but may be continued
throughout the night.

c\) Communications should gradually deteriorate and become impossible on
this frequency by night.

d\) Communications should gradually improve and peak at night and early
morning.

097C- At mid-day in summer, what would be the best choice in attempting
to communicate, using NBDP with a shore station some 800 miles (1,287
km) distant?

a\) VHF-FM.

b\) Higher HF bands.

c\) Lower HF bands.

d\) MF

097D- At mid-night, what would be the best choice in attempting to
communicate, using NBDP with a shore station some 800 miles (1,287 km)
distant?

a\) VHF-FM.

b\) Higher UHF bands.

c\) HF bands.

d\) Communications is impossible at this distance.

097E- At mid-day, what would be the best choice in attempting to
communicate with a shore station some 75 miles (121 km) distant?

a\) VHF-FM.

b\) 22 MHz band.

c\) 16 MHz band.

d\) MF

097F- How can a radio operator determine the best frequency band to
choose for a SITOR transmission to a shore station?

a\) By consulting propagation tables.

b\) If static interference is present, try lower bands first.

c\) Listen to shore station \"free signals\"; choose the band with the
strongest.

d\) During nighttime, choose highest frequencies. Choose lower
frequencies in the daytime.

Key Topic #097 Answer Key: A: c) B: d) C: b) D: c) E: d) F: c).

KEY TOPIC #098: MF-HF: DSC CONTROLLER ALERT/CALL RESPONSE.

098A- The Distress Alarm sounds and the screen readout no longer
contains the particulars of the Distress:

a\) Examine the printer to determine if the particulars were routed to
the printer.

b\) Examine the Transmit Data Directory.

c\) Both a) and d) are correct.

d\) Examine the Received Data Directory.

098B- A DSC Distress call is received by your vessel and your
transceiver frequency display reads:

Transmit = 4207.5 kHz and Receive = 4207.5 kHz \-- what information can
you infer from this?

a\) The DSC controller decoded the requested voice frequency as 4207.5
kHz Simplex and your DSC controller has automatically set-up your
transceiver.

b\) The DSC controller decoded the contents of the DSC call but the
request is illegal.

c\) Both a) and b) are true.

d\) The DSC call came in on 4 MHz DSC and you should set-up your
transmitter and respond on the appropriate voice follow-on frequency.

098C- You receive an Urgent DSC call to all vessels specifying an
alternate telex frequency & emission. If your transceiver frequency
display reads: 2174.5 kHz transmit & 4207.5 kHz receive:

a\) Either the call was incorrectly formatted by the other vessel or the
other vessel has presumably lost MF/HF voice capability.

b\) The DSC controller decoded the contents of the DSC call but the
request is illegal.

c\) Both a) and d) are true.

d\) The DSC call came in on 4 MHz DSC but either the call was
incorrectly formatted by the other vessel or your controller failed to
decode the receive field of the alternate frequency entry and only your
Transmit set-up is correct.

098D- You receive a Routine DSC call specifying an alternate working
voice frequency & emission. Your transceiver frequency display reads:
4125.0 kHz transmit 4125.0 kHz receive:

a\) The requested alternate working channel was 4125.0 kHz Simplex and
your DSC controller has automatically set-up your transceiver.

b\) The DSC controller decoded the contents of the DSC call and has
automatically set-up your transceiver but the request is illegal.

c\) Both a) and b) are true.

d\) The DSC call came in on 4125 kHz and you should respond on the
alternate working frequency.

098E- You receive a Routine DSC call to your vessel, without specifying
an alternate working voice frequency & emission. If your transceiver
frequency display reads: 2177 kHz transmit 2177 kHz receive what must
you do?

a\) Tune the transmitter and make a voice call to the other vessel on
2187.5 kHz.

b\) Access the data directory to determine the alternate frequency and
then make a voice call to the other vessel on the alternate frequency.

c\) Manually Acknowledge the DSC call on the alternate frequency, then
make a voice call to the other vessel on 2182.0 kHz.

d\) Call other vessel on 2182.0 kHz and shift to a proper working
frequency.

098F- An incoming DSC Distress Alert on 8414.5 kHz will have what
result?

a\) The DSC controller will emit both an audible and visual alarm.

b\) The particulars of the alert may be printed out.

c\) The distress information contained in the alert will be sent to the
data directory.

d\) All of the above.

Key Topic #098 Answer Key: A: c) B: d) C: c) D: c) E: d) F: d).

KEY TOPIC #099: MF-HF: ROUTINE COMMUNICATIONS WITH COAST STATIONS,
MESSAGE HANDLING:

099A- What usually comprises a coast station\'s call sign?

a\) Three numerals from a group assigned to the coast station\'s nation
by the ITU.

b\) Four numerals from a group assigned to the coast station\'s nation
by the ITU.

c\) Three letters from a group assigned to the coast station\'s nation
by the ITU.

d\) Four letters from a group assigned to the coast station\'s nation by
the ITU.

099B- What is the term normally used to describe a scheduled broadcast
by a coast station to identify those vessels for which the coast station
is holding message traffic?

a\) AAIC list.

b\) Traffic Radio Service (TRS).

c\) Traffic list.

d\) Mobile Traffic Radio Service (MTRS).

099C- How often does a coast radio station that regularly broadcasts
traffic lists transmit the list?

a\) As often as is deemed necessary to effect delivery.

b\) No less often than every four hours.

c\) Only on an as-needed basis.

d\) Once per 24-hour period.

099D- What is an accounting authority?

a\) An agency responsible for collecting payments on behalf of a vessel.

b\) An agency responsible for verifying the accuracy of a shipping
company\'s financial records.

c\) An agency responsible for settling a vessel\'s financial accounts
for chargeable communications.

d\) An agency responsible for establishing tariff rates for commercial
communications.

099E- What message charges are incurred when sending a ship's business
message through a public correspondence station?

a\) Ship station (SS) and land line (LL) charges.

b\) Ship station (SS) and coast (CC) charges.

c\) Ship station (SS), coast (CC), and land line (LL) charges.

d\) Coast (CC) and land line (LL) charges.

099F- What are the primary components of a formal message or cable sent
from a vessel to a coast radio station for delivery?

a\) Date/time group, address, text, and signature.

b\) Preamble, address, text, and signature.

c\) Preamble, service instructions, address, text, and signature.

d\) Service instructions, address, text, and signature.

Key Topic #099 Answer Key: A: c) B: c) C: b) D: c) E: d) F: b).

KEY TOPIC #100: MF-HF: EQUIPMENT FAULTS & TESTING:

100A- Which of the following conditions would be a symptom of
malfunction in a 2182 kHz radiotelephone system which must be reported
to an onboard or at-sea maintainer under GMDSS?

a\) Much higher noise level observed during daytime operation.

b\) No indication of power output when speaking into the microphone.

c\) When testing a radiotelephone alarm on 2182 kHz into an artificial
antenna, the distress frequency watch receiver becomes unmuted, an
improper testing procedure.

d\) Failure to contact a shore station 600 nautical miles distant during
daytime operation.

100B- Which would indicate a malfunction in a 2182 kHz radiotelephone
system?

a\) No discernable traffic has been heard on the 2182 kHz during the
radiotelephone silent periods.

b\) Failure to contact another station 60 miles distant during daytime
operation.

c\) Dramatic decrease in noise level observed during night and early
morning hours.

d\) The visual indication of power to the antenna fluctuates while
testing the radiotelephone alarm signal generator into an artificial
antenna.

100C- Which would indicate proper operation of a SSB transmitter rated
at 60 Watt PEP output in J3E mode?

a\) In SITOR communications, the power meter can be seen fluctuating
regularly from zero to the 60 watt relative output reading.

b\) In SSB (J3E) voice mode, with the transmitter keyed but without
speaking into the microphone, no power output is indicated.

c\) In SSB (J3E) mode, speaking into the microphone causes the power
meter to fluctuate well above the 60 watt reading.

d\) A steady indication of transmitted energy on an RF power meter with
no fluctuations when speaking into the microphone.

100D- Which would be an indication of proper operation of a SSB
transmitter rated at 60 watt PEP output?

a\) In Sitor communications, the power meter can be seen fluctuating
regularly from zero to the 60 watt relative output reading.

b\) In SSB (J3E) voice mode, with the transmitter keyed but without
speaking into the microphone, power output is indicated.

c\) In SSB (J3E) mode, speaking into the microphone causes power meter
to fluctuate slightly around the 60 watt reading.

d\) A steady indication of transmitted energy on an RF Power meter with
no fluctuations when speaking into the microphone.

100E- There are no signals or static heard in the receiver of the SSB
Transceiver, although a loud noise is heard if the volume control is
advanced all the way up, what is a possible cause?

a\) The antenna or feedline has been damaged.

b\) The antenna switch has been transferred to the test position.

c\) A defective receiver.

d\) Any of these.

100F- What would be an indication of a malfunction on a GMDSS station
with a 24 VDC battery system?

a\) A constant 30 volt reading on the GMDSS console voltmeter.

b\) After testing the station on battery power, the ammeter reading
indicates a high rate of charge that then declines.

c\) After testing the station on battery power, a voltmeter reading of
30 volts for brief period followed by a steady 26 volt reading.

d\) None of the above.

Key Topic #100 Answer Key: A: b) B: b) C: b) D: a) E: d) F: a).