In the event the motion of the DEEP DRILLER is such that critical motion limits are exceeded, you should __________.
Official USCG Answer & Rule Citation
Correct Answer: Option B — place the unit at 45 foot draft
When critical motion limits are exceeded on semi-submersible drilling units, ballasting down to the survival draft of 45 feet reduces water-plane area and dampens wave-induced accelerations, safeguarding marine riser and structural integrity.
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