(a) Each tankship must be shown by design calculations to meet the survival conditions in Sec. 172.195 in each condition of loading and operation assuming the damage specified in Sec. 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.