The DEEP DRILLER's lightweight is the condition prior to loading __________.

Correct Answer: Option C — deck load, lower-hull liquids, external loads, and deploying anchors

Lightweight definition under USCG stability regulations encompasses the complete structural steel, machinery, permanent ballast, and outfitting. For specialized floating units like the DEEP DRILLER, lightweight condition specifically includes deck loads, lower-hull liquids, external loads, and deployed mooring anchors as baseline deductions.