Other ship types · Portugal flag · built 2009
CAROLINE: CO₂ emissions 2018–2025
IMO 9501863 EU ETS8 reporting years
- CO₂ reported 2025
- 7,972 t
- Fuel burned
- 2,545 t
- Time at sea
- 2,140 h
- Emitted at berth
- 3% of total
- Share of year under way
- 24%
- Gross tonnage
- 11,473
CAROLINE against its type
Built in 2009, it is the same age as the median vessel in the other ship types category on this register (build year 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 52 vessels in the other ship types category here under the Portugal flag, 10.4% 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. Its MRV returns name it PALMERTON for 2018 and CAROLINE for 2019–2025. The reported port of registry changed: St. John's (2018–2023), then Madeira (2024–2025).
Its 7,972 t of CO₂ for 2025 is 1.6 times 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 290.4 kg CO₂, 26% above the type median of 231.1 kg. It logged 2,140 hours at sea against a median of 2,231 hours for its type that year. 3.1% 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 2019 (16,949 t) and the lowest 2021 (1,779 t). Its efficiency percentile within the type went from 100 in 2022 to 99 in 2023 (lower is more efficient). Of the 3 sister ships listed below with a 2025 return, 2 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 | 7,972 | 2,545 | — | 2,140 | 244 | 290.4 | — | — |
| 2024 | 6,626 | 2,090 | — | 1,667 | 684 | 324.6 | 357.8 | not ranked |
| 2023 | 8,858 | 2,785 | 22,998 | 1,932 | 2,578 | 385.2 | 474.4 | 99 |
| 2022 | 7,172 | 2,263 | 25,346 | 1,914 | 508 | 283.0 | 243.6 | 100 |
| 2021 | 1,779 | 564 | — | 504 | 100 | 266.0 | — | — |
| 2020 | 9,652 | 3,051 | — | 2,999 | 207 | 254.7 | — | — |
| 2019 | 16,949 | 5,394 | — | 4,927 | 619 | 258.9 | — | — |
| 2018 | 9,233 | 2,936 | — | 2,673 | 643 | 262.4 | — | — |
Vessel particulars
- IMO number
- 9501863
- Previously reported as
- PALMERTON
- Ship type
- Other ship types
- Gross tonnage
- 11,473
- Length overall
- 133.0 m
- Year built
- 2009
- Flag state
- Portugal per EU MRV 2025
Sources disagree: Wikidata/AIS (undated) list Antigua and Barbuda. The flag shown is from the newest official source, the EU MRV return for 2025. - Port of registry
- Madeira MRV 2025
- Home port
- Madeira
- Ice class
- IA
- Technical efficiency (design)
- EIV (23.77 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 13.7% lower than in 2018, for EU/EEA voyages only.
From 2024 to 2025, emissions rose 20.3% and CO₂ per nautical mile fell 10.5%.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
- 8,097 t
- Methane (CH₄)
- 0.13 t
- Nitrous oxide (N₂O)
- 0.46 t
- Under EU ETS
- 4,408 t, 55% 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, a name history and a licensed photograph. Not found in the sources for this vessel: an efficiency ranking, 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.