In recent years, interest for maritime operations in the Arctic region has risen substantially, highlighted by projects such as Yamal LNG. While the changing climate does help with opening up such opportunities, designing vessels and systems for such extreme conditions is still far from trivial. At DEKC Maritime, we have broad experience working with the different regulatory codes governing extreme-cold maritime engineering, such as the IMO Polar Code, the IACS Polar Class rules, and the Russian RS regulations. On the practical side, we have been involved in a number of projects for operations in extreme-cold conditions: • Design and engineering of a winterized equipment bay for a walk-to-work system • Feasibility study for the winterization of heavy-lift vessels and operations in the Arctic Ocean • Structural design of a shallow-draft icebreaker