Other ship types · Antigua and Barbuda flag · built 2011
CALYPSO: CO₂ emissions 2018–2025
IMO 9512381 EU ETS8 reporting years
- CO₂ reported 2025
- 3,569 t
- Fuel burned
- 1,132 t
- Time at sea
- 981 h
- Emitted at berth
- 7% of total
- Share of year under way
- 11%
- Gross tonnage
- 11,473
.jpg){kind=link}
CALYPSO against its type
Built in 2011, it is 2 years newer than the median vessel in the other ship types category on this register, which was built in 2009 (451 vessels with a known build year). At 11,473 gross tonnage it is larger than 55% of the other 436 vessels in the other ship types category with a recorded tonnage. It is one of 46 vessels in the other ship types category here under the Antigua and Barbuda flag, 9.2% of the 499 on the register. The same builder is recorded for 65 other vessels here, 4 of them vessels in the other ship types category. The returns for 2018–2025 all give St. John's as port of registry.
Its 3,569 t of CO₂ for 2025 is 30% below the median of 5,122 t among the 335 vessels in the other ship types category on this register that reported for 2025. Per nautical mile it emitted 293.7 kg CO₂, 27% above the type median of 231.1 kg. It logged 981 hours at sea against a median of 2,231 hours for its type that year. 7.4% of its 2025 emissions were at berth; the median for vessels in the other ship types category was 3.9%. Across 8 years with reported emissions, the highest was 2018 (10,804 t) and the lowest 2024 (2,790 t). Its efficiency percentile within the type went from 95 in 2022 to 74 in 2023 (lower is more efficient). Of the 3 sister ships listed below with a 2025 return, 3 reported a lower CO₂ per nautical mile than this vessel.
Emissions by year2018–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 3,569 | 1,132 | — | 981 | 264 | 293.7 | — | — |
| 2024 | 2,790 | 884 | — | 828 | 12 | 257.2 | 261.0 | not ranked |
| 2023 | 7,186 | 2,281 | 29,107 | 2,302 | 482 | 246.9 | 172.7 | 74 |
| 2022 | 6,780 | 2,146 | 27,044 | 2,124 | 205 | 250.7 | 85.9 | 95 |
| 2021 | 7,474 | 2,384 | — | 2,384 | 394 | 225.3 | — | — |
| 2020 | 7,720 | 2,470 | — | 2,728 | 180 | 213.9 | — | — |
| 2019 | 8,256 | 2,630 | — | 2,468 | 291 | 251.4 | — | — |
| 2018 | 10,804 | 3,445 | — | 3,460 | 528 | 245.6 | — | — |
Vessel particulars
- IMO number
- 9512381
- Ship type
- Other ship types
- Gross tonnage
- 11,473
- Length overall
- 134.0 m
- Year built
- 2011
- Flag state
- Antigua and Barbuda per EU MRV 2025
- Port of registry
- St. John's MRV 2025
- Ice class
- IA
- Technical efficiency (design)
- EIV (24.16 gCO₂/t·nm)
- Efficiency ranking
- Not ranked: transport work below the floor (2024)
- Verifier
- EnvService GmbH, Germany
- Accreditation
- D-VS-20809-01-00
- Compliance document issued
- 2026-02-26
- Compliance document expires
- 2027-06-30
Reported CO₂ by year
Reported CO₂ in 2025 was 67.0% lower than in 2018, for EU/EEA voyages only.
From 2024 to 2025, emissions rose 27.9% and CO₂ per nautical mile rose 14.2%.Distance is missing for at least one of the two years, so activity and efficiency cannot be separated here.
Where the 2025 emissions occurred
Methane, nitrous oxide and EU ETS2025
- Total CO₂ equivalent
- 3,624 t
- Methane (CH₄)
- 0.06 t
- Nitrous oxide (N₂O)
- 0.20 t
- Under EU ETS
- 2,240 t, 63% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | Swiss Climate EcoCare GmbH | Germany |
| 2024 | EnvService GmbH | Germany |
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 2018–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0) and Wikimedia Commons.
This page draws on 8 MRV reporting years, 5 of 5 vessel particulars and a licensed photograph. Not found in the sources for this vessel: an efficiency ranking, AIS movements in Norwegian waters, a name history, 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.