Which measure should NOT be taken to reduce the pounding of a vessel in a head sea?

Correct Answer: Option B — Add ballast in the after peak.

Adding ballast in the after peak increases the draft aft, which raises the bow and makes the vessel more prone to slamming in a head sea. To reduce pounding, one should add ballast forward to increase the draft at the bow, thereby keeping the forefoot submerged and reducing impact.