Oil tanker · Liberia flag · built 2009
KAROLOS: CO₂ emissions 2018–2025
IMO 9410208 EU ETS5 reporting years
- CO₂ reported 2025
- 9,405 t
- Fuel burned
- 3,011 t
- Distance
- 16,366 nm
- Time at sea
- 2,866 h
- Emitted at berth
- 3% of total
- Share of year under way
- 33%
- Gross tonnage
- 85,362
KAROLOS against its type
Built in 2009, it is 1 year older than the median oil tanker on this register, which was built in 2010 (2,896 vessels with a known build year). At 85,362 gross tonnage it is larger than 85% of the other 2,841 oil tankers with a recorded tonnage. It is one of 718 oil tankers here under the Liberia flag, 20.2% of the 3,548 on the register. The returns for 2018–2025 all give Monrovia as port of registry.
Its 9,405 t of CO₂ for 2025 is 19% above the median of 7,922 t among the 1,704 oil tankers on this register that reported for 2025. Per nautical mile it emitted 574.7 kg CO₂, 43% above the type median of 403.2 kg. It logged 2,866 hours at sea against a median of 2,030 hours for its type that year. 3.0% of its 2025 emissions were at berth; the median for oil tankers was 7.8%. Across 5 years with reported emissions, the highest was 2023 (13,795 t) and the lowest 2022 (3,934 t). Its efficiency percentile within the type went from 84 in 2018 to 32 in 2025 (lower is more efficient). Of the 6 comparable vessels 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 | 9,405 | 3,011 | 16,366 | 2,866 | 283 | 574.7 | 6.1 | 32 |
| 2024 | 5,695 | 1,819 | 5,859 | 777 | 411 | 972.0 | 9.4 | 68 |
| 2023 | 13,795 | 4,418 | 25,530 | 2,586 | 722 | 540.3 | 4.5 | 9 |
| 2022 | 3,934 | 1,256 | 7,459 | 652 | 0 | 527.4 | 4.0 | 5 |
| 2018 | 4,005 | 1,278 | 6,212 | 658 | 691 | 644.7 | 15.8 | 84 |
Vessel particulars
- IMO number
- 9410208
- Ship type
- Oil tanker
- Gross tonnage
- 85,362
- Length overall
- 274.0 m
- Year built
- 2009
- Flag state
- Liberia per EU MRV 2025
- Port of registry
- Monrovia MRV 2025
- Technical efficiency (design)
- EEXI (2.79 gCO₂/t·nm)
- Verifier
- EMICERT, Greece
- Accreditation
- 874-4
- Compliance document issued
- 2026-03-24
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 467 of 1,448 qualifying oil tankers by EEOI, at the 32nd percentile. The dashed line is the type median, 7.5; this vessel reported 6.1.
EEOI divides emissions by transport work, which for this vessel and year was 1,536,843,137 tonne-miles over 16,366 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 134.9% higher than in 2018, for EU/EEA voyages only. No return is recorded for 2019, 2020, 2021, so the series has gaps.
From 2024 to 2025, emissions rose 65.1% while distance sailed rose 179.3%and CO₂ per nautical mile fell 40.9%.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
- 9,553 t
- Methane (CH₄)
- 0.15 t
- Nitrous oxide (N₂O)
- 0.54 t
- Under EU ETS
- 5,588 t, 59% of total
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 5 MRV reporting years, an efficiency ranking, 4 of 5 vessel particulars and a licensed photograph. Not found in the sources for this vessel: 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.