When a semisubmersible rig under tow experiences pounding on the forward transverse brace, the surest way to alleviate the condition would be to __________.

Correct Answer: Option D — ballast down

Ballasting down lowers the pontoons deeper below the dynamic wave interface, eliminating direct wave impact and slamming on the forward transverse braces. This operational procedure reduces fatigue and potential structural damage during heavy weather ocean transits.