Freezing is the most common problem and serious for vessels operating in polar waters, because it affects ship safety and equipment operability. Therefore, ship systems and equipment exposed to cold weather must comply with the appropriate cold protection policies to achieve the required anti-icing and de-icing effects. In this study, we conducted a thorough review of the relevant winterization rules and guidelines established by the China Classification Society (CCS). We analyzed the winterization requirements pertaining to specific areas of the ship, to assess the optimal winterization technology of equipment and systems, such as engine room ventilation, ice sea chest, ballast water tank anti freezing systems and products, and deck machinery. Finally, we summarized the main anti-freezing measures to provide design guidance for ships sailing in cold areas.