Results are presented from the production of 70–100-mm-thick plates of cold-resistant low-carbon microalloyed steel on the 4200 reversing mill at NLMK DanSteel. The steel is made to conform to special requirements on cold resistance in order to improve the reliability of crucial parts, components, and mechanisms in offshore structures and installations used in the Northern and Arctic regions. It is shown that thermomechanical processing ensures high-level impact work under the most demanding conditions in standard impact-toughness tests: on Charpy specimens of the steel sampled in the transverse direction at the mid-thickness of the plates.