Cook Islands vs Hong Kong: Maritime transport CO2 emissions (experimental)
Maritime transport CO2 emissions (experimental) over time
- Cook Islands
- Hong Kong
How they compare
Hong Kong currently reports 5,669 Tonnes against 3,906 Tonnes in Cook Islands, a difference of 1,763 Tonnes.
That makes Hong Kong's figure about 1.5 times Cook Islands's.
Across all 7 years both countries report, Hong Kong has been ahead every year.
Cook Islands ranks 123rd and Hong Kong ranks 121st of 138 countries.
Hong Kong has averaged higher in every one of the 2 decades both report.
Head to head by decade
| Decade | Cook Islands | Hong Kong | Difference | Ahead |
|---|---|---|---|---|
| 2010s | 6,226 Tonnes | 64,679 Tonnes | 58,453 Tonnes | Hong Kong |
| 2020s | 3,074 Tonnes | 66,671 Tonnes | 63,597 Tonnes | Hong Kong |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher maritime transport co2 emissions, Cook Islands or Hong Kong?
- Hong Kong, at 5,669 Tonnes against 3,906 Tonnes in Cook Islands as of 2025.
- What is the difference in maritime transport co2 emissions between Cook Islands and Hong Kong?
- 1,763 Tonnes, with Hong Kong ahead.
- How many years of comparable data are there for Cook Islands and Hong Kong?
- 7 years are reported by both, from 2019 to 2025.
- How do Cook Islands and Hong Kong rank globally for maritime transport co2 emissions?
- Cook Islands ranks 123rd and Hong Kong ranks 121st of 138 countries.
- Where does this data come from?
- Organisation for Economic Co-operation and Development, published as Maritime transport CO2 emissions (experimental). Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
This experimental dataset includes annual, quarterly, and monthly information on carbon dioxide (CO2) emissions from maritime transport based on ship-tracking information collected via Automatic Identification System (AIS) transponders, covering all large vessels (above 300 gross tonnage) around the world, accessed via the United Nations Global Platform, from 2019 onwards. The CO2 emissions are estimated by the OECD, based on a consistent methodology across countries and include emissions from both domestic and international voyages. The CO2 emissions are classified using the ship-type classification used by the International Maritime Organisation (IMO) distinguishing between 19 vessel categories such as bulk carriers, tankers, and cruise ships. The database provides a measure of CO2 emissions on a territory basis for domestic navigation, which is used for reporting in the UN Framework Convention on Climate Change (UNFCCC) inventories; and also on a residence basis, which is used to estimate the emissions of maritime transport (H50 in the International Standard Industrial Classification of All Economic Activities, or ISIC) in the SEEA Air Emission Accounts (AEAs). Seven components of these CO2 emissions measures can be selected from the ‘Vessel emissions ’ filter. In the tables, these are also shown with the letters A, B, C, D, E, F and G. The aggregate measures of CO2 emissions are calculated as: Domestic navigation = A + C International navigation (memo item) = D + G Air emissions accounts: maritime transport (ISIC H50) = A + B + D + E + F For residence based measures, the allocation of emissions to countries is based on the residence of the companies that operate the ships. More information can be found on the dataset webpage