Chemical tanker · Marshall Islands flag · built 2019
PROTEUS: CO₂ emissions 2020–2025
IMO 9864368 EU ETS5 reporting years
- CO₂ reported 2025
- 1,959 t
- Fuel burned
- 622 t
- Distance
- 6,168 nm
- Time at sea
- 567 h
- Emitted at berth
- 8% of total
- Share of year under way
- 6%
- Gross tonnage
- 29,000
PROTEUS against its type
Built in 2019, it is 9 years newer than the median chemical tanker on this register, which was built in 2010 (1,951 vessels with a known build year). At 29,000 gross tonnage it is larger than 67% of the other 1,899 chemical tankers with a recorded tonnage. 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 983 other vessels here, 330 of them chemical tankers. The returns for 2020–2025 all give Majuro as port of registry.
Its 1,959 t of CO₂ for 2025 is 65% below the median of 5,533 t among the 1,483 chemical tankers on this register that reported for 2025. Per nautical mile it emitted 317.6 kg CO₂, 27% above the type median of 250.2 kg. It logged 567 hours at sea against a median of 2,109 hours for its type that year. 7.9% of its 2025 emissions were at berth; the median for chemical tankers was 6.6%. Across 5 years with reported emissions, the highest was 2020 (13,264 t) and the lowest 2025 (1,959 t). Its efficiency percentile within the type went from 14 in 2020 to 43 in 2025 (lower is more efficient). Of the 5 sister ships listed below with a 2025 return, 4 reported a lower CO₂ per nautical mile than this vessel.
Emissions by year2020–2025
| Year | CO₂ (t) | Fuel (t) | Distance (nm) | At sea (h) | At berth (t) | kg CO₂/nm | EEOI | Percentile |
|---|---|---|---|---|---|---|---|---|
| 2025 | 1,959 | 622 | 6,168 | 567 | 155 | 317.6 | 13.2 | 43 |
| 2023 | 4,321 | 1,382 | 8,146 | 737 | 315 | 530.4 | 35.2 | 87 |
| 2022 | 4,002 | 1,276 | 10,406 | 936 | 605 | 384.5 | 10.4 | 19 |
| 2021 | 2,856 | 915 | 11,308 | 1,026 | 60 | 252.5 | 13.4 | 35 |
| 2020 | 13,264 | 4,241 | 42,821 | 4,260 | 476 | 309.8 | 9.8 | 14 |
Vessel particulars
- IMO number
- 9864368
- Ship type
- Chemical tanker
- Gross tonnage
- 29,000
- Length overall
- 183.0 m
- Beam
- 32.0 m
- Year built
- 2019
- Flag state
- Marshall Islands per EU MRV 2025
- Builder
- HD Hyundai Mipo
- Port of registry
- Majuro MRV 2025
- Technical efficiency (design)
- EEXI (4.19 gCO₂/t·nm)
- Verifier
- DNV, Germany
- Accreditation
- VS-16026-01
- Compliance document issued
- 2026-03-30
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 578 of 1,348 qualifying chemical tankers by EEOI, at the 43rd percentile. The dashed line is the type median, 14.4; this vessel reported 13.2.
EEOI divides emissions by transport work, which for this vessel and year was 148,727,411 tonne-miles over 6,168 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 85.2% lower than in 2020, for EU/EEA voyages only. No return is recorded for 2024, so the series has gaps.
From 2023 to 2025, emissions fell 54.7% while distance sailed fell 24.3%and CO₂ per nautical mile fell 40.1%.That points mainly to how efficiently it sailed, rather than the other.
Where the 2025 emissions occurred
Methane, nitrous oxide and EU ETS2025
- Total CO₂ equivalent
- 1,989 t
- Methane (CH₄)
- 0.03 t
- Nitrous oxide (N₂O)
- 0.11 t
- Under EU ETS
- 901 t, 46% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2020 | AMERICAN BUREAU OF SHIPPING HELLENIC SINGLE MEMBER LIMITED LIABILITY COMPANY (ABS HELLENIC S.M. LTD) | Greece |
| 2021 | DNV | Germany |
| 2023 | HELLENIC LLOYD'S S.A. | Greece |
| 2025 | DNV | 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 2020–2025, published by the European Commission.
- Vessel particulars: Wikidata (CC0).
This page draws on 5 MRV reporting years, an efficiency ranking and 5 of 5 vessel particulars. Not found in the sources for this vessel: AIS movements in Norwegian waters, a name history, 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.