In Arctic waters, discharges of sewage are prohibited, except when performed in accordance with MARPOL Annex IV. This chapter contains important geographical delimitations for discharges where approved sewage treatment plants are in operation. See full text of Chapter 4 below.
PART IIA: CHAPTER 4 – PREVENTION OF POLLUTION BY SEWAGE FROM SHIPS: Full Polar Code text
As adopted from IMO - Full Polar Code text
POLAR CODE CHAPTERS: EXPLANATION AND SUBMISSIONS