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"What is the requirement of a navigator who uses an ECDIS?

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"Place's name used on board vessel should be those ___.

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" The VDR system is designed to operate _____ once it is set up

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"Which of the following is not an operation mode of AIS?

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"When may the automatic identification system (AIS) be switched

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"With respect to automatic identification system(AIS),which info

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"When the ship is under attack by pirates, or terrorists, _____

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"Which of the following is defined as static information of AIS?

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"In normal mode, SSAS report is sent ___ after the button on the

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"The coverage range of AIS is slightly better than radar due to

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