Adequate back-up arrangements should be provided to ensure
safe navigation in case of an ECDIS failure.
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.1 Facilities enabling a safe take-over of the
ECDIS functions should be provided in order to ensure that an ECDIS
failure does not result in a critical situation.
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.2 A back-up arrangement should be provided facilitating
means for safe navigation of the remaining part of the voyage in case
of an ECDIS failure.