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Subelement I
Inmarsat Equip. & Comms:
Section 59
Sat-C, Power up, Self-Test, Controls & Lamps:
Which of the following actions should be taken once the vessel is berthed and will not leave port again for several weeks?
  • 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.
  • 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.
  • Correct Answer
    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.)
  • 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.

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

(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.)

Just remember the answer.

For more information, please see Furuno Electric Co's Operator's Manual (2002) for Inmarsat-C Mobile Earth Station Model Felcom 15, and (2003)
INMARSAT-C MOBILE EARTH STATION MODEL FELCOM 15.

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What action should always be taken before powering down an Inmarsat-C terminal or leaving one satellite footprint for another?
  • An Inmarsat-C system must never be powered down or mandatory MSI messages will be lost.
  • Send a message to the NCS advising arrival in port or request the NCS log your terminal in with the new satellite.
  • 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.
  • Correct Answer
    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.

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

(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.

Just remember the answer.

For more information, please see Furuno Electric Co's Operator's Manual (2002) for Inmarsat-C Mobile Earth Station Model Felcom 15, and (2003)
INMARSAT-C MOBILE EARTH STATION MODEL FELCOM 15.

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With most Inmarsat-C systems what should the indicator lamps do when powering up?
  • Correct Answer
    All lamps should illuminate in a particular sequence, as per the operator's manual.
  • The power on lamp should illuminate. Other lights remain off until a message is received.
  • All lamps should light and stay illuminated.
  • All lamps should light except the RED light.

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.

Just remember the answer.

For more information, please see Furuno Electric Co's Operator's Manual (2002) for Inmarsat-C Mobile Earth Station Model Felcom 15, and (2003)
INMARSAT-C MOBILE EARTH STATION MODEL FELCOM 15.

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What is the importance of a successful log in indication, after power-up, on an Inmarsat-C terminal?
  • The antenna Azimuth and Elevation controls are correctly adjusted.
  • Correct Answer
    The terminal is enabled for routine incoming and outbound traffic.
  • The receiver gain is properly adjusted for maximum signal.
  • Unscheduled EGC MSI messages can no longer be received.

What is the importance of a successful login indication, after power-up, on an Inmarsat-C terminal?

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

Just remember the answer

For more information. please see Furuno Electric Co's Operator's Manual (2002) for Inmarsat-C Mobile Earth Station Model Felcom 15, and (2003)
INMARSAT-C MOBILE EARTH STATION MODEL FELCOM 15.

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On an Inmarsat-C system, what is the importance of a successful "SYNC" indication after power up?
  • The system is not yet locked on to the NCS signal until a log-in command is performed.
  • Correct Answer
    Sufficient signal strength on the NCS common channel is being received.
  • There is company telex traffic being received on the NCS common channel.
  • The NCS has confirmed log-in status is on so routine traffic can be sent and received.

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

(B). Sufficient signal strength on the NCS common channel is being received.

Just remember the answer.

For more information, please see Furuno Electric Co's Operator's Manual (2002) for Inmarsat-C Mobile Earth Station Model Felcom 15, and (2003)
INMARSAT-C MOBILE EARTH STATION MODEL FELCOM 15.

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On an Inmarsat-C system an incoming EGC alarm sounds:
  • When first powered on and when receiving Distress traffic.
  • When receiving Distress traffic and all of the BALD MSI messages.
  • Correct Answer
    To draw the operator's attention to an unscheduled Distress or Urgency message.
  • To indicate the loss of NCS CC sync -- preventing the reception of unscheduled EGC messages.

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

(C). To draw the operator's attention to an unscheduled Distress or Urgency message.

Just remember the answer.

For more information about EGC function, please see Furuno Electric Co's Operator's Manual (2002) for Inmarsat-C Mobile Earth Station Model Felcom 15, and (2003)
INMARSAT-C MOBILE EARTH STATION MODEL FELCOM 15.
Use Ctrl-F and search on EGC.

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