46 C.F.R. § 172.095 Intact longitudinal stability.
Title 46 - Shipping
Each tank barge must be shown by design calculations to have a longitudinal metacentric height (GM) in feet (meters) in each condition of loading and operation, at least equal to the following:
where— L=LOA in feet (meters) d=draft in feet (meters).
Title 46: Shipping
PART 172—SPECIAL RULES PERTAINING TO BULK CARGOES
Subpart E—Special Rules Pertaining to a Barge That Carries a Hazardous Liquid Regulated Under Subchapter O of This Chapter
§ 172.095 Intact longitudinal stability.

