46 CFR §174.040
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Each unit must be designed to have at least 2 inches (50mm) of positive metacentric height in the upright equilibrium position for the full range of drafts, whether at the operating draft for navigation, towing, or drilling afloat, or at a temporary draft when changing drafts.