IMO MARPOL Annex VI · Emission Control Areas

9 polygons covering 7 zones · Coverage as of 2026 · Full guide · polygons.geojson

Zones

Click a polygon to see its details. Each zone enforces sulphur ≤ 0.10% m/m inside (vs. 0.50% globally) and/or NOx Tier III for newbuilds. See the full reference for what each means in practice.