Inmarsat Equip. & Comms:
Inmarsat Log-in & Log-out:
Which action must be taken to ensure that incoming message traffic of all priority levels will be received through Inmarsat-C?
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Correct AnswerThe GMDSS Radio Operator must log-in to the desired satellite (if the unit did not automatically do so.)
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No additional action is necessary after turning on the receiver and aiming the antenna at the desired satellite.
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The system needs only to be commissioned and turned on.
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The GMDSS Radio Operator must log-in to the desired satellite and receive the message reference number (MRN) from the LES.
Tags: none
When logging into the Inmarsat system using Inmarsat-C, it is necessary to:
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Enter your IMN.
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Correct AnswerSelect the Ocean Region.
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Enter the LES answer back.
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Call the LES and inform them that you are now operating in the appropriate ocean region.
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What action should be taken on changing from one ocean region to another?
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Power the system down and turn the power back on again.
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Manually realign the antenna.
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Correct AnswerLog out of the current satellite and log in to the correct satellite.
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No action is required -- the unit will scan for another satellite and log in.
Tags: none
What is the primary danger of improperly logging out?
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The vessel will be barred in the future from sending traffic through an LES.
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The NCS ensures that improper log-out procedures do not occur.
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Scheduled MSI may not be available through the Inmarsat-C terminal.
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Correct AnswerYour company or another ship may accrue significant charges when their traffic is repetitively sent to your unavailable terminal.
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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?
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Correct AnswerReception of unscheduled MSI Urgency and Distress messages.
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Transmission of synoptic weather reports and company traffic.
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Reception of the mandatory scheduled BALD MSI messages.
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Reception of company traffic related to ship's business.
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Which of the following is not an example of a failure to log-out properly?
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Turning off the power prior to logging out with the NCS.
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Correct AnswerA message on the screen or printer from the NCS.
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Sailing the vessel into a shadowing or local RF interference situation before logging out.
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Sailing out of the footprint of a satellite before logging out.
Tags: none
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