A Critical Operation is an Operation where an error may immediately cause an accident or create a situation which could threaten people, the ship, or environment.
Example are:
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Navigation in busy sea lanes
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Navigation in restricted visibility (< 3 miles)
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Navigation in Heavy weather (Wind force > 6, Wave height > 5m)
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Navigation in narrow channel & congested waters (< 3 miles)
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Pollution prevention
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Entry into enclosed space
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Hot & Cold work
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Cargo Operations on Tankers
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Bunkering
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Mooring Operations
