Chapter 5:

watertight and weathertight


CHAPTER SUMMARY
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.


SUBMISSIONS


CHAPTER 5 –  WATERTIGHT AND WEATHERTIGHT INTEGRITY:
Full Polar Code text
As adopted from IMO - Full Polar Code text

5.1 Goal

The goal of this chapter is to provide measures to maintain watertight and weathertight integrity.

5.2 Functional requirements
In order to achieve the goal set out in paragraph 5.1 above, all closing appliances and doors relevant to watertight and weathertight integrity of the ship shall be operable.

5.3 Regulations
In order to comply with the functional requirements of paragraph 5.2 above, the following apply:
  • .1 for ships operating in areas and during periods where ice accretion is likely to occur, means shall be provided to remove or prevent ice and snow accretion around hatches and doors; and
  • .2 in addition, for ships intended to operate in low air temperature the following apply:
    • .1 if the hatches or doors are hydraulically operated, means shall be provided to prevent freezing or excessive viscosity of liquids; and
    • .2 watertight and weathertight doors, hatches and closing devices which are not within an habitable environment and require access while at sea shall be designed to be operated by personnel wearing heavy winter clothing including thick mittens.




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POLAR CODE CHAPTERS:
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