Container ship · Liberia flag · built 2010
CALYPSO: CO₂ emissions 2021–2025
IMO 9550371 EU ETS5 reporting years
- CO₂ reported 2025
- 9,008 t
- Fuel burned
- 2,877 t
- Distance
- 31,630 nm
- Time at sea
- 3,235 h
- Emitted at berth
- 2% of total
- Share of year under way
- 37%
CALYPSO against its type
Built in 2010, it is 2 years newer than the median container ship on this register, which was built in 2008 (3,088 vessels with a known build year). It is one of 976 container ships here under the Liberia flag, 27.9% of the 3,495 on the register. The same builder is recorded for 323 other vessels here, 23 of them container ships. The returns for 2021–2025 all give Monrovia as port of registry.
Its 9,008 t of CO₂ for 2025 is 45% below the median of 16,359 t among the 2,234 container ships on this register that reported for 2025. Per nautical mile it emitted 284.8 kg CO₂, 48% below the type median of 545.6 kg. It logged 3,235 hours at sea against a median of 3,155 hours for its type that year. 1.8% of its 2025 emissions were at berth; the median for container ships was 3.2%. Across 5 years with reported emissions, the highest was 2025 (9,008 t) and the lowest 2021 (3,312 t). Its efficiency percentile within the type went from 82 in 2022 to 84 in 2025 (lower is more efficient). Of the 5 sister ships listed below with a 2025 return, 4 reported a lower CO₂ per nautical mile than this vessel.
Emissions by year2021–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 9,008 | 2,877 | 31,630 | 3,235 | 161 | 284.8 | 29.8 | 84 |
| 2024 | 6,855 | 2,199 | 24,514 | 2,364 | 160 | 279.6 | 25.4 | 77 |
| 2023 | 3,995 | 1,280 | — | 1,899 | 197 | 270.6 | 49.2 | not ranked |
| 2022 | 6,332 | 2,030 | 22,312 | 1,638 | 560 | 283.8 | 33.4 | 82 |
| 2021 | 3,312 | 1,050 | — | 760 | 515 | 312.1 | 20.6 | not ranked |
Vessel particulars
- IMO number
- 9550371
- Ship type
- Container ship
- Year built
- 2010
- Flag state
- Liberia per EU MRV 2025
Sources disagree: Wikidata/AIS (undated) list Panama. The flag shown is from the newest official source, the EU MRV return for 2025. - Builder
- Imabari Shipbuilding
- Port of registry
- Monrovia MRV 2025
- Technical efficiency (design)
- EEXI (18.8 gCO₂/t·nm)
- Verifier
- DNV, Germany
- Accreditation
- VS-16026-01
- Compliance document issued
- 2026-02-23
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 1,540 of 1,838 qualifying container ships by EEOI, at the 84th percentile. The dashed line is the type median, 14.2; this vessel reported 29.8.
EEOI divides emissions by transport work, which for this vessel and year was 302,589,184 tonne-miles over 31,630 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 172.0% higher than in 2021, for EU/EEA voyages only.
From 2024 to 2025, emissions rose 31.4% while distance sailed rose 29.0%and CO₂ per nautical mile rose 1.8%.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
- 9,149 t
- Methane (CH₄)
- 0.14 t
- Nitrous oxide (N₂O)
- 0.52 t
- Under EU ETS
- 4,207 t, 47% of total
Sources and how to read this
- Emissions: EU MRV publication (THETIS-MRV), reporting years 2021–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0).
This page draws on 5 MRV reporting years, an efficiency ranking and 3 of 5 vessel particulars. Not found in the sources for this vessel: AIS movements in Norwegian waters, a name history, a licensed photograph, 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.