Chapter 5 contains requirements to maintain the watertight and weathertight integrity of all closing appliances and doors on board a ship, including measures to remove or prevent ice accretion, prevention of freezing or excessive viscocity of operating liquids. The requirements also take into account in design that crew personnel operating closing appliances and doors will be wearing heavy wintered clothing, including thick mittens. These are clearly set out in the Chapter 5 wording below.
CHAPTER 5 – WATERTIGHT AND WEATHERTIGHT INTEGRITY: Full Polar Code text
As adopted from IMO - Full Polar Code text
POLAR CODE CHAPTERS: EXPLANATION AND SUBMISSIONS