The DEEP DRILLER, while loaded as shown in the Sample Load Form #4 (Drilling), suffers damage to the port center column below the waterline. Pumping from tanks 2P and 9P is not sufficient to prevent increasing port list. You should consider counterflooding in tank __________.
Official USCG Answer & Rule Citation
Correct Answer: Option B — C2BS
To correct a port list caused by port-side damage, counterflooding must occur on the opposite, undamaged starboard side symmetrically aft. Tank C2BS provides the necessary corrective moment.
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