Chemical tanker · Liberia flag · built 2012
CHEM PLUTO: CO₂ emissions 2018–2025
IMO 9624770 EU ETS7 reporting years
- CO₂ reported 2025
- 9,503 t
- Fuel burned
- 3,033 t
- Distance
- 37,058 nm
- Time at sea
- 3,362 h
- Emitted at berth
- 8% of total
- Share of year under way
- 38%
- Gross tonnage
- 12,226
CHEM PLUTO against its type
Built in 2012, it is 2 years newer than the median chemical tanker on this register, which was built in 2010 (1,951 vessels with a known build year). At 12,226 gross tonnage it is smaller than 67% of the other 1,899 chemical tankers with a recorded tonnage. It is one of 402 chemical tankers here under the Liberia flag, 17.2% of the 2,344 on the register. The same builder is recorded for 24 other vessels here, 16 of them chemical tankers. Its MRV returns name it CHEMSTAR STELLAR for 2018–2020, CHEM PLUTO for 2022 and MISTRAL EXPLORER for 2023–2025. The reported port of registry changed: PANAMA (2018–2020), then MONROVIA (2022–2025).
Its 9,503 t of CO₂ for 2025 is 1.7 times the median of 5,533 t among the 1,483 chemical tankers on this register that reported for 2025. Per nautical mile it emitted 256.4 kg CO₂, close to the type median of 250.2 kg. It logged 3,362 hours at sea against a median of 2,109 hours for its type that year. 7.7% of its 2025 emissions were at berth; the median for chemical tankers was 6.6%. Across 7 years with reported emissions, the highest was 2025 (9,503 t) and the lowest 2020 (4,248 t). Its efficiency percentile within the type went from 48 in 2018 to 56 in 2025 (lower is more efficient). Of the 6 sister ships listed below with a 2025 return, 6 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 | 9,503 | 3,033 | 37,058 | 3,362 | 727 | 256.4 | 15.8 | 56 |
| 2024 | 4,961 | 1,584 | 20,138 | 1,881 | 0 | 246.3 | 38.9 | 90 |
| 2023 | 5,780 | 1,827 | 24,986 | 1,869 | 642 | 231.3 | 15.7 | 86 |
| 2022 | 7,310 | 2,308 | 29,228 | 2,266 | 808 | 250.1 | 18.1 | 90 |
| 2020 | 4,248 | 1,336 | 20,469 | 1,639 | 125 | 207.5 | 11.6 | 24 |
| 2019 | 9,458 | 3,015 | 38,118 | 3,774 | 399 | 248.1 | 15.1 | 42 |
| 2018 | 7,639 | 2,439 | 32,123 | 2,401 | 600 | 237.8 | 16.2 | 48 |
Vessel particulars
- IMO number
- 9624770
- Previously reported as
- CHEMSTAR STELLAR, MISTRAL EXPLORER
- Ship type
- Chemical tanker
- Gross tonnage
- 12,226
- Length overall
- 149.0 m
- Beam
- 24.0 m
- Year built
- 2012
- 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
- Asakawa Shipbuilding
- Port of registry
- Monrovia MRV 2025
- Technical efficiency (design)
- EIV (9.95 gCO₂/t·nm)
- Verifier
- NORMEC VERIFAVIA SAS, France
- Accreditation
- 3-2127
- Compliance document issued
- 2026-03-18
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 753 of 1,348 qualifying chemical tankers by EEOI, at the 56th percentile. The dashed line is the type median, 14.4; this vessel reported 15.8.
EEOI divides emissions by transport work, which for this vessel and year was 603,372,698 tonne-miles over 37,058 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 24.4% higher than in 2018, for EU/EEA voyages only. No return is recorded for 2021, so the series has gaps.
From 2024 to 2025, emissions rose 91.6% while distance sailed rose 84.0%and CO₂ per nautical mile rose 4.1%.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
- 9,652 t
- Methane (CH₄)
- 0.15 t
- Nitrous oxide (N₂O)
- 0.55 t
- Under EU ETS
- 5,879 t, 62% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | Nippon Kaiji Kyokai | Japan |
| 2019 | AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD) | Greece |
| 2022 | Nippon Kaiji Kyokai | Japan |
| 2024 | NORMEC VERIFAVIA SAS | France |
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).
This page draws on 7 MRV reporting years, an efficiency ranking, 5 of 5 vessel particulars and a name history. Not found in the sources for this vessel: AIS movements in Norwegian waters, 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.