Chemical tanker · Marshall Islands flag · built 2021
CELSIUS PORTSMOUTH: CO₂ emissions 2021–2025
IMO 9884837 EU ETS5 reporting years
- CO₂ reported 2025
- 3,537 t
- Fuel burned
- 1,126 t
- Distance
- 14,638 nm
- Time at sea
- 1,300 h
- Emitted at berth
- 3% of total
- Share of year under way
- 15%
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CELSIUS PORTSMOUTH against its type
Built in 2021, it is 11 years newer than the median chemical tanker on this register, which was built in 2010 (1,951 vessels with a known build year). It is one of 474 chemical tankers here under the Marshall Islands flag, 20.2% of the 2,344 on the register. The same builder is recorded for 21 other vessels here. The returns for 2021–2025 all give Majuro as port of registry.
Its 3,537 t of CO₂ for 2025 is 36% below the median of 5,531 t among the 1,484 chemical tankers on this register that reported for 2025. Per nautical mile it emitted 241.7 kg CO₂, close to the type median of 250.2 kg. It logged 1,300 hours at sea against a median of 2,106 hours for its type that year. 3.2% of its 2025 emissions were at berth; the median for chemical tankers was 6.6%. Across 5 years with reported emissions, the highest was 2023 (10,729 t) and the lowest 2024 (2,002 t). Its efficiency percentile within the type went from 6 in 2021 to 3 in 2025 (lower is more efficient). Of the 4 comparable vessels listed below with a 2025 return, 1 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 | 3,537 | 1,126 | 14,638 | 1,300 | 113 | 241.7 | 6.7 | 3 |
| 2024 | 2,002 | 635 | 8,506 | 695 | 21 | 235.4 | 9.2 | 15 |
| 2023 | 10,729 | 3,416 | 47,284 | 4,005 | 578 | 226.9 | 8.1 | 6 |
| 2022 | 6,525 | 2,084 | 26,325 | 2,231 | 459 | 247.8 | 7.3 | 3 |
| 2021 | 8,215 | 2,606 | 30,931 | 3,439 | 395 | 265.6 | 8.6 | 6 |
Vessel particulars
- IMO number
- 9884837
- Ship type
- Chemical tanker
- Length overall
- 183.0 m
- Year built
- 2021
- Flag state
- Marshall Islands per EU MRV 2025
- Port of registry
- Majuro MRV 2025
- Technical efficiency (design)
- EEXI (3.89 gCO₂/t·nm)
- Verifier
- AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD), Greece
- Accreditation
- 1083-2
- Compliance document issued
- 2026-03-27
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 41 of 1,348 qualifying chemical tankers by EEOI, at the 3rd percentile. The dashed line is the type median, 14.4; this vessel reported 6.7.
EEOI divides emissions by transport work, which for this vessel and year was 524,813,056 tonne-miles over 14,638 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 56.9% lower than in 2021, for EU/EEA voyages only.
From 2024 to 2025, emissions rose 76.7% while distance sailed rose 72.1%and CO₂ per nautical mile rose 2.7%.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
- 3,593 t
- Methane (CH₄)
- 0.06 t
- Nitrous oxide (N₂O)
- 0.20 t
- Under EU ETS
- 1,825 t, 52% of total
Laden voyages2025
- CO₂ on laden voyages
- 3,235 t, 91% of total
- Fuel, laden
- 1,032 t
- CO₂ per nm, laden
- 230.1 kg
The rest of the 2025 total was emitted on ballast legs or at berth.
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) 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.