Maritime transport CO2 emissions (experimental) in World
World: Maritime transport CO2 emissions was 113.95 million Tonnes in 2025. ▲ Rising
Maritime transport CO2 emissions in World, 2019–2025
Source: Organisation for Economic Co-operation and Development. Measured in Tonnes.
Analysis
In 2025, maritime transport co2 emissions in World stood at 113.95 million Tonnes.
Compared with earlier readings it is down 6.5% on the previous year and up 13.3% over ten years.
Maritime transport CO2 emissions in World, year by year
| Year | Tonnes | Change |
|---|---|---|
| 2019 | 100.57 million Tonnes | — |
| 2020 | 94.87 million Tonnes | -5.7% |
| 2021 | 101.27 million Tonnes | +6.7% |
| 2022 | 153.82 million Tonnes | +51.9% |
| 2023 | 122.97 million Tonnes | -20.1% |
| 2024 | 121.88 million Tonnes | -0.9% |
| 2025 | 113.95 million Tonnes | -6.5% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2010s | 100.57 million Tonnes | 100.57 million Tonnes | 100.57 million Tonnes | 1 |
| 2020s | 118.13 million Tonnes | 94.87 million Tonnes | 153.82 million Tonnes | 6 |
Countries ranked near World
- 1 OECD 54.81 million Tonnes compare
- 2 Türkiye 3.13 million Tonnes compare
- 2 China 24.22 million Tonnes compare
- 2 Mauritania 116,150 Tonnes compare
- 3 Netherlands 2.52 million Tonnes compare
- 3 United States 9.33 million Tonnes compare
- 3 Croatia 103,936 Tonnes compare
- 4 Brazil 6.01 million Tonnes compare
- 4 Fiji 97,678 Tonnes compare
- 4 Viet Nam 1.07 million Tonnes compare
More climate change data for World
- Nutrient nitrogen N (total) — Synthetic fertilizers (Agricultural) 135.91 billion kg (2050)
- Emissions from livestock — Emissions (CO2eq) 4.94 million kt (2050)
- Emissions from livestock — Emissions (CO2eq) from N2O 1.27 million kt (2050)
- Emissions from livestock — Emissions (CO2eq) from CH4 3.67 million kt (2050)
- Emissions from livestock — Emissions 4,791 kt (2050)
- Emissions from livestock — Emissions 130,918 kt (2050)
- Emissions from crops — Emissions (CO2eq) 1.64 million kt (2050)
- Emissions from crops — Emissions (CO2eq) from N2O 957,726 kt (2050)
- Emissions from crops — Emissions (CO2eq) from CH4 685,096 kt (2050)
- Emissions from crops — Emissions 3,614 kt (2050)
Frequently asked questions
- What is maritime transport co2 emissions in World?
- Maritime transport co2 emissions in World was 113.95 million Tonnes in 2025, according to Organisation for Economic Co-operation and Development.
- What is the highest maritime transport co2 emissions recorded in World?
- The highest recorded value was 153.82 million Tonnes in 2022.
- What is the lowest maritime transport co2 emissions recorded in World?
- The lowest recorded value was 94.87 million Tonnes in 2020.
- How does World rank for maritime transport co2 emissions?
- World ranks 1st out of 12 groups with data for 2025.
- Is maritime transport co2 emissions rising or falling in World?
- Over the last ten years it is up 13.3%. The long-run trend across the full record is rising.
- Where does this World data come from?
- The figures come from Organisation for Economic Co-operation and Development, published as part of Maritime transport CO2 emissions (experimental). Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 7 observations, free to reuse under OECD Terms and Conditions (attribution required).
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