61I1 Which action must be taken to ensure that incoming message traffic of all priority levels will be received through Inmarsat-C?

A. The GMDSS Radio Operator must log-in to the desired satellite (if the unit did not automatically do so.)

B. No additional action is necessary after turning on the receiver and aiming the antenna at the desired satellite.

C. The system needs only to be commissioned and turned on.

D. The GMDSS Radio Operator must log-in to the desired satellite and receive the message reference number (MRN) from the LES.

61I2 When logging into the Inmarsat system using Inmarsat-C, it is necessary to:

B. Select the Ocean Region or select the NCS.

A. Enter your IMN when requested by the NCS.

C. Enter the LES answer back when requested by the LES.

D. Call the LES and inform them that you are now operating in the appropriate ocean region.

61I3 What action should be taken on changing from one Inmarsat-C ocean region to another?

C. Log out of the current satellite and log in to the correct satellite.

A. Power the system down and turn the power back on again.

B. Manually realign the antenna.

D. No action is required -- the unit will scan for another satellite and log in.

61I4 What is the primary danger of an Inmarsat-C terminal if it is not properly logged out?

D. Your company or another ship may accrue significant charges when their traffic is repetitively sent to your unavailable terminal.

A. The vessel will be barred in the future from sending traffic through an LES.

B. The NCS ensures that improper log-out procedures do not occur

C. Scheduled MSI may not be available through the Inmarsat-C terminal.

61I5 Which of these can take place on an Inmarsat-C terminal that has synch with the NCS CC but has not yet performed a successful login?

A. Reception of unscheduled MSI Urgency and Distress messages.

B. Transmission of synoptic weather reports and company traffic.

C. Reception of the mandatory scheduled BALD MSI messages.

D. Reception of company traffic related to ship’s business.

61I6 Which of the following is NOT an example of a failure to log-out properly?

B. A message on the screen or printer from the NCS.

A. Turning off the power prior to logging out with the NCS.

C. Sailing the vessel into a shadowing or local RF interference situation before logging out.

D. Sailing out of the footprint of a satellite before logging out.

62I1 What is the primary function of an NCS?

D. To monitor and control communications through the Inmarsat satellite for which it is responsible.

A. To provide direct communications between the Inmarsat station placing a call and the station receiving the call.

B. To provide multi-mode communications between the Inmarsat station placing a call and the coast radio station that will deliver it

C. To determine which satellite is best suited to provide communications between the Inmarsat station placing a call and the station receiving the call.

62I2 What is the primary function of a LES?

A. To provide direct communications between the Inmarsat station placing a call and the station receiving the call.

B. To monitor and control communications through the Inmarsat satellite for which it is responsible

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.

62I4 How is maximum communications coverage provided by satellites in the Inmarsat maritime satellite service?

C. Four satellites in geo-stationary orbit approximately 22,184 miles above the equator.

A. Four satellites in polar orbit to provide worldwide coverage

B. Four satellites in geo-stationary orbit for each Inmarsat Service (C and FBB).

D. Through coordinated use of COSPAS-SARSAT satellites.

62I5 What factors bear on the choice of NCS on an Inmarsat terminal?

C. Signal strength, Distress SAR choices, choice of MSI NAVAREAS.

A. NAVAREA weather patterns, shore-ship routine communications, signal strength.

B. Best email provider, preventing interference in port, Distress SAR choices.

D. Minimize overlapping footprint coverage, reduce ship-ship message costs, receive BALD warnings.

62I6 What is the purpose of a CODEC?

D. To convert analog voice signals to digital transmissions

A. Noise and echo-canceling used in TELEX operation.

B. To enable Distress communications.

C. To enable data communications.

63I1 Iridium satellites are in what sort of orbits?

C. 66 satellites in near polar orbit to provide true global coverage.

A. 4 satellites in near polar orbit to provide true global coverage

B. 66 satellites in geo-stationary orbit to provide true global coverage.

D. 6 geo-stationary satellites providing coverage between 70N & 70S degrees latitude

63I2 How are Iridium antennas tracking the satellites?

D. They are omni-directional antennas that receive signal as various satellites pass overhead.

A. They are flat-panel arrays that must be oriented to the satellites in their near-polar orbit.

B. They are directional dish antennas that must track the satellites as they pass overhead.

C. They are omni-directional dish antennas that locate the satellites as they pass overhead.

63I3 The Iridium terminal typically displays what status indicators?

A. Power, GPS, signal strength, data and handset port conditions.

B. Power, GPS, signal strength and satellite tracking azimuth and elevation.

C. GPS satellites overhead, conditions of data and handset ports and data throughput.

D. Geo-stationary satellite status, signal strength and data and handset port conditions.

63I4 How are Iridium calls routed through the satellite system?

B. The satellites are in view of one another and traffic can swiftly be passed to a ground station.

A. The satellites store the calls and forwards them to ground stations when they are in view.

C. The satellites are geo-stationary and route the traffic immediately to the ground stations.

D. The satellites in polar orbits pass traffic to geo-stationary satellites and then to ground stations

63I5 Which of the following statements concerning Iridium satellites is true?

B. They provide coverage to vessels in all of the world's navigable waters including polar regions.

A. They are in a geo-stationary orbit, in order to provide true global coverage.

C. They are in an equatorial orbit, in order to provide true global coverage.

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

63I6 What is the primary purpose of an Iridium LES?

C. The LES makes the satellite connection between the vessel and the requested shore destination.

A. The LES is required for ship-ship Inmarsat communications, ship-shore communications are handled by terrestrial Coast Radio Stations

B. The LES monitors all operations of the satellite and assigns channels and frequencies to the vessel.

D. The LES is dedicated only to processing all vessel Distress priority calls

64I1 How is a signal radiated from an Inmarsat-FBB system's antenna?

B. It is a highly focused directional signal that must be beamed at the desired satellite.

A. 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.

64I2 Inmarsat FBB coverage is provided by?

C. There are four footprints not all of which are identical to Inmarsat-C coverage.

A. 66 satellites in near-polar orbits.

B. The same four satellites that provide Inmarsat-C coverage

D. 6 geo-stationary satellites to provide coverage in all navigable waters.

64I3 How does an FBB terminal notify shore authorities of a Distress situation with priority pre-emption?

D. Press the dedicated Distress Alert button on the connected Maritime Safety Terminal.

A. Dial 505 on the keypad to request an “SOS” voice call.

B. Dial 505 on the keypad to make a pre-emptive priority Distress call

C. Press the dedicated Distress Alert button on the FBB handset.

64I4 What features in a Maritime Safety Terminal (MST) are required for FBB units to meet GMDSS requirements?

A. Distress Alert button, keyboard and either printer or dedicated display/memory..

B. Printer, keyboard and 505 Distress menus on the keypad.

C. Printer, Distress Alert button and dedicated EGC receiver.

D. FBB units do not require Maritime Safety terminals to be compliant.

64I5 How does an FBB terminal fully meet compulsory GMDSS requirements?

D. The addition of a Maritime Safety Terminal, Distress Alert button, keyboard and printer or dedicated display

A. All FBB terminals are automatically certified under GMDSS by the IMO.

B. FBB terminals are not certified for use by GMDSS compulsory vessels

C. The FBB terminal is replaced by a Maritime Safety Terminal, Distress Alert button, keyboard and printer.

64I6 When engaging in voice communications via an Inmarsat-FBB terminal, what procedures are used?

A. CODECs may be used to digitize the voice signal.

B. Noise-blanking must be selected by the operator

C. The voice signal must be compressed to fit into the allowed bandwidth.

D. The voice signal will be expanded at the receiving terminal.

65I2 What is the average length of time required for a TELEX sent by Inmarsat-C to be delivered to the addressee?

B. The average delivery time for a message sent by Inmarsat-C is about 10 minutes.

A. All Inmarsat-C communications are made with real-time connectivity so there is no delay in message delivery

C. Date/time notification of delivery is possible only through Inmarsat-FBB.

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

65I3 How is a signal radiated from an Inmarsat-C system's antenna?

C. It is radiated in an omni-directional pattern.

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.

D. It is radiated in an omni-directional pattern that can be reversed by the Operator to attain directional beaming to an alternate satellite.

65I5 With an Inmarsat-C LES, how are messages routed to receiving stations?

A. All messages are forwarded via a store and forward network.

B. Direct connections are made to the receiving stations via gateways

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.

65I4 What statement is true regarding Inmarsat-C?

D. This is a store and forward network, with an intermediate step that means there is no direct connection between ship and shore users.

A. There is a propagation delay, but a direct connection is made between the ship and shore users.

B. There are delays in establishing communications. Then a direct real-time connection is maintained with the other party.

C. The TELEX message is stored until the mailbox is accessed by the station desiring to retrieve their message.

65I6 What are the directional characteristics of the Inmarsat-C SES antenna?

A. Highly directional parabolic antenna requiring stabilization.

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.

66I1 Which of the following best describes Inmarsat-C operation?

D. Is a digital store-and-forward system that also provides Enhanced Group Call, data reporting, polling and Distress alerting capabilities

B. Requires a stabilized directional antenna

C. Provides for voice, TELEX, high and low-speed data and compressed video communications.

66I2 Which of the following best describes a shipboard Inmarsat-C system?

A. A small, lightweight terminal capable of providing satellite store-and-forward message communications.

B. A satellite communications system that provides real-time connectivity

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.

66I3 How are Inmarsat-C LESs selected by the operator?

B. The NCS for each ocean region downloads the current LES codes into the terminal

A. The operator can program the terminal for their preferred default LES codes for Distress and routine communications

C. The NCS selects the optimum LES code for both Routine and Distress communication.

D. The LES codes can be selected for routine communications but the NCS chooses the best LES for Distress Alerts.

66I4 Which statement about Inmarsat-C LESs is true?

C. Some LESs are available in all four footprints due to the cloud-based NGC mode.

A. LESs are only available in the Ocean Regions that overlap one another

B. LESs are only available in the Ocean Region controlled by their NCS.

D. All LESs are available in all four footprints due to the cloud-based NGC mode.

66I6 Which of the following best describes the full range of services provided by the Inmarsat-C Satellite system?

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

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

67I1 Which statement concerning Inmarsat-FBB and Inmarsat-C terminals is correct?

C. Both Inmarsat-FBB and Inmarsat-C units can send data as well as send messages to fax machines.

A. Both Inmarsat-FBB and Inmarsat-C units are capable of fax and voice communications.

B. Inmarsat-FBB units are not capable of data communications, but Inmarsat-C units are capable of data communications.

D. None of these answers is correct.

67I2 When Inmarsat-FBB and Inmarsat-C terminals are compared:

D. Inmarsat-FBB antennas are larger, but directional for higher gain, while Inmarsat-C antennas are smaller and non-parabolic, and do not require aiming at the satellite.

A. Inmarsat-FBB antennas are larger, but omni-directional, while Inmarsat-C antennas are smaller and parabolic, for aiming at the satellite.

B. Inmarsat-FBB 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-FBB antennas are parabolic for lower gain.

67I4 When Inmarsat-FBB and Inmarsat-C terminals are compared:

B. Inmarsat-C antennas are smaller, with passive non-parabolic antennas but no rewind capability

A. Inmarsat-C antennas are smaller, with active parabolic antennas but no rewind capability.

C. Inmarsat-FBB antennas are larger, with passive non-parabolic antennas that require rewind capability.

D. Inmarsat-FBB antennas are larger, with stationary parabolic antennas but no rewind capability.

GMDSS Element 7 - I

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Other

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Justin McDonald

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126 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

59I1 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 SafetyNETTM messages have been received and stored.

C. The GMDSS Radio Operator may log out of the Inmarsat-C system and turn the power off (unless the vessel decides to leave the unit on during the port stay.)

D. The GMDSS Radio Operator must transmit an all-ships alert, to notify vessels within the satellite's footprint that the vessel will be off-line.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

59I2 What action should always be taken before powering down an Inmarsat-C terminal or leaving one satellite footprint for another?

A. An Inmarsat-C system must never be powered down or mandatory MSI messages will be lost

B. Send a message to the NCS advising arrival in port or request the NCS log your terminal in with the new satellite.

C. No action is required –- the terminal will automatically log in with the new satellite when the NCS common channel is detected or after power up.

D. Log out with the current NCS to inform them you are off the air or to enable a proper log in procedure with the new satellite.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

59I3 With most Inmarsat-C systems what should the indicator lamps do when powering up?

A. All lamps should illuminate in a particular sequence, as per the operator’s manual

B. The power on lamp should illuminate. Other lights remain off until a message is received

C. All lamps should light and stay illuminated.

D. All lamps should light except the RED light.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

59I4 What is the importance of a successful log in indication, after power-up, on an Inmarsat-C terminal?

A. The antenna Azimuth and Elevation controls are correctly adjusted.

B. The terminal is enabled for routine incoming and outbound traffic

C. The receiver gain is properly adjusted for maximum signal.

D. Unscheduled EGC MSI messages can no longer be received.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

59I5 On an Inmarsat-C system, what is the importance of a successful “SYNC” indication after power up?

A. The system is not yet locked on to the NCS signal until a log-in command is performed.

A. The system is not yet locked on to the NCS signal until a log-in command is performed. B. Sufficient signal strength on the NCS common channel is being received.

C. There is company telex traffic being received on the NCS common channel.

D. The NCS has confirmed log-in status is on so routine traffic can be sent and received.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

59I6 On an Inmarsat-C system an incoming EGC alarm sounds:

A. When first powered on and when receiving Distress traffic.

B. When receiving Distress traffic and all of the BALD MSI messages.

C. To draw the operator’s attention to an unscheduled Distress or Urgency message.

D. To indicate the loss of NCS CC sync -- preventing the reception of unscheduled EGC messages.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

60I1 Which satellite(s) would most likely be selected for use when the vessel is operating off the eastern shore of the United States?

A. IOR

B. AOR-W

C. POR

D. Either AOR-W or IOR will work.

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GMDSS Element 7 - I

126 questions

59I1 Which of the following actions should be taken once the vessel is berthed and will not leave port again for several weeks?

59I2 What action should always be taken before powering down an Inmarsat-C terminal or leaving one satellite footprint for another?

59I3 With most Inmarsat-C systems what should the indicator lamps do when powering up?

59I4 What is the importance of a successful log in indication, after power-up, on an Inmarsat-C terminal?

59I5 On an Inmarsat-C system, what is the importance of a successful “SYNC” indication after power up?

59I6 On an Inmarsat-C system an incoming EGC alarm sounds:

60I1 Which satellite(s) would most likely be selected for use when the vessel is operating off the eastern shore of the United States?

60I2 Which satellite should be chosen when the vessel is operating between Japan and the Bering Sea?

60I3 Which longitude corresponds to the AOR-W satellite for Inmarsat-C communications?

60I4 Which longitude corresponds to the AOR-E satellite for Inmarsat-C communications?

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