46 CFR § 154.615
Design temperature below 0 °C (32 °F) and down to −55 °C (−67 °F)
April 15, 2021
Plates, forgings, forged or rolled or forged bars and shapes for cargo tanks and secondary barriers for a design temperature below 0 °C (32 °F) and down to −55 °C (−67 °F) must meet §54.25-10 of this chapter.