MARPOL
Meaning
MARPOL is the IMO's International Convention for the Prevention of Pollution from Ships, covering oil, chemicals, sewage, garbage and air emissions.
Also written as MARPOL convention
MARPOL explained
Annex I governs oil pollution, including double hulls and oily water discharges. Annex VI covers air emissions, including the sulphur limits, emission control areas, EEXI and CII.
Related terms
Double hull
A double hull is an inner and outer shell around a tanker's cargo tanks, required for oil tankers under MARPOL to reduce spills after grounding or collision.
ECA
An emission control area (ECA) is a sea area where ships must burn fuel with no more than 0.10% sulphur, or use a scrubber, under MARPOL Annex VI.
IMO 2020
IMO 2020 is the global limit, in force since 1 January 2020, of 0.50% sulphur in ship fuel outside emission control areas.
CII
CII (Carbon Intensity Indicator) is the IMO's yearly A-to-E rating of a ship's operational CO2 emissions per unit of transport work.