46 C.F.R. § 172.170 Damage stability calculations.
Title 46 - Shipping
(a) Each tankship must be shown by design calculations to meet the survival conditions in §172.195 in each condition of loading and operation assuming the damage specified in §172.175 for the hull type specified in Table 4 of part 154 of this chapter. (b) If a cargo listed in Table 4 of part 154 of this chapter is to be carried, the vessel must be at least the ship type specified in Table 4 of part 154 of this chapter for the cargo.
Title 46: Shipping
PART 172—SPECIAL RULES PERTAINING TO BULK CARGOES
Subpart G—Special Rules Pertaining to a Ship That Carries a Bulk Liquefied Gas Regulated Under Subchapter O of This Chapter
§ 172.170 Damage stability calculations.

