Container ship · Bahamas flag · built 2001
CMA CGM CHIWAN: CO₂ emissions 2020–2025
IMO 9224312 EU ETS6 reporting years
- CO₂ reported 2025
- 23,026 t
- Fuel burned
- 7,257 t
- Distance
- 55,326 nm
- Time at sea
- 5,828 h
- Emitted at berth
- 7% of total
- Share of year under way
- 67%
- Gross tonnage
- 39,941
CMA CGM CHIWAN against its type
Built in 2001, it is 7 years older than the median container ship on this register, which was built in 2008 (3,088 vessels with a known build year). At 39,941 gross tonnage it is smaller than 56% of the other 3,000 container ships with a recorded tonnage. It is one of 17 container ships here under the Bahamas flag, 0.5% of the 3,495 on the register. The same builder is recorded for 563 other vessels here, 243 of them container ships. Its MRV returns name it SEASPAN CHIWAN for 2020–2021 and CMA CGM CHIWAN for 2022–2025. The reported port of registry changed: Hong Kong (2020–2021), then Nassau (2022–2025).
Its 23,026 t of CO₂ for 2025 is 41% above the median of 16,359 t among the 2,234 container ships on this register that reported for 2025. Per nautical mile it emitted 416.2 kg CO₂, 24% below the type median of 545.6 kg. It logged 5,828 hours at sea against a median of 3,155 hours for its type that year. 7.0% of its 2025 emissions were at berth; the median for container ships was 3.2%. Across 6 years with reported emissions, the highest was 2021 (24,325 t) and the lowest 2022 (8,174 t). Its efficiency percentile within the type went from 72 in 2020 to 47 in 2025 (lower is more efficient). Of the 3 sister ships listed below with a 2025 return, 0 reported a lower CO₂ per nautical mile than this vessel.
Emissions by year2020–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 23,026 | 7,257 | 55,326 | 5,828 | 1,612 | 416.2 | 13.7 | 47 |
| 2024 | 16,169 | 5,173 | 35,489 | 3,297 | 1,099 | 455.6 | 18.5 | 61 |
| 2023 | 13,184 | 4,232 | 34,822 | 2,495 | 159 | 378.6 | 11.0 | 27 |
| 2022 | 8,174 | 2,622 | 20,572 | 1,473 | 206 | 397.3 | 11.7 | 29 |
| 2021 | 24,325 | 7,707 | 41,631 | 2,962 | 1,188 | 584.3 | 24.5 | 71 |
| 2020 | 11,034 | 3,501 | 20,029 | 1,564 | 152 | 550.9 | 23.5 | 72 |
Vessel particulars
- IMO number
- 9224312
- Previously reported as
- SEASPAN CHIWAN
- Ship type
- Container ship
- Gross tonnage
- 39,941
- Length overall
- 259.8 m
- Year built
- 2001
- Flag state
- Bahamas per EU MRV 2025
- Builder
- Samsung Heavy Industries
- Port of registry
- Nassau MRV 2025
- Technical efficiency (design)
- EEXI (10.5 gCO₂/t·nm)
- Verifier
- AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD), Greece
- Accreditation
- 1083-2
- Compliance document issued
- 2026-04-02
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 872 of 1,838 qualifying container ships by EEOI, at the 47th percentile. The dashed line is the type median, 14.2; this vessel reported 13.7.
EEOI divides emissions by transport work, which for this vessel and year was 1,686,903,297 tonne-miles over 55,326 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 108.7% higher than in 2020, for EU/EEA voyages only.
From 2024 to 2025, emissions rose 42.4% while distance sailed rose 55.9%and CO₂ per nautical mile fell 8.7%.That points mainly to how much the vessel sailed, rather than the other.
Where the 2025 emissions occurred
Methane, nitrous oxide and EU ETS2025
- Total CO₂ equivalent
- 23,383 t
- Methane (CH₄)
- 0.36 t
- Nitrous oxide (N₂O)
- 1.31 t
- Under EU ETS
- 18,714 t, 81% of total
Laden voyages2025
- CO₂ on laden voyages
- 20,437 t, 89% of total
- Fuel, laden
- 6,446 t
- CO₂ per nm, laden
- 386.7 kg
The rest of the 2025 total was emitted on ballast legs or at berth.
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2020 | DNV | Germany |
| 2023 | EnvService GmbH | Germany |
| 2024 | AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD) | Greece |
A change of verifier is not in itself a sign of anything being wrong.
Sources and how to read this
- Emissions: EU MRV publication (THETIS-MRV), reporting years 2020–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0) and Wikimedia Commons.
This page draws on 6 MRV reporting years, an efficiency ranking, 5 of 5 vessel particulars, a name history and a licensed photograph. Not found in the sources for this vessel: AIS movements in Norwegian waters, a sanctions listing and US port state inspections.
Empty means unreported, never zero. How EEOI, distance, percentiles and sister ships are handled is explained under reading a vessel page. Something wrong? See corrections.