Chemical tanker · Liberia flag · built 2008
ARISTOTELIS II: CO₂ emissions 2018–2025
IMO 9384033 EU ETS4 reporting years
- CO₂ reported 2025
- 2,315 t
- Fuel burned
- 739 t
- Distance
- 6,951 nm
- Time at sea
- 621 h
- Emitted at berth
- 8% of total
- Share of year under way
- 7%
- Gross tonnage
- 30,109
ARISTOTELIS II against its type
Built in 2008, it is 2 years older than the median chemical tanker on this register, which was built in 2010 (1,951 vessels with a known build year). At 30,109 gross tonnage it is larger than 93% 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. Its MRV returns name it ARISTOTELIS II for 2018, SEAWAYS NANTUCKET for 2021–2022 and PALMA for 2025. The reported port of registry changed: Majuro (2021–2022), then Monrovia (2025).
Its 2,315 t of CO₂ for 2025 is 58% 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 333.1 kg CO₂, 33% above the type median of 250.2 kg. It logged 621 hours at sea against a median of 2,106 hours for its type that year. 7.8% of its 2025 emissions were at berth; the median for chemical tankers was 6.6%. Across 4 years with reported emissions, the highest was 2018 (8,211 t) and the lowest 2025 (2,315 t). Its efficiency percentile within the type went from 20 in 2018 to 31 in 2025 (lower is more efficient). Of the 5 comparable vessels listed below with a 2025 return, 4 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 | 2,315 | 739 | 6,951 | 621 | 181 | 333.1 | 11.3 | 31 |
| 2022 | 2,700 | 858 | — | 914 | 135 | 271.1 | 20.4 | not ranked |
| 2021 | 2,898 | 924 | 9,784 | 1,132 | 329 | 296.2 | 8.2 | 48 |
| 2018 | 8,211 | 2,622 | 25,642 | 2,886 | 405 | 320.2 | 10.8 | 20 |
Vessel particulars
- IMO number
- 9384033
- Previously reported as
- SEAWAYS NANTUCKET, PALMA
- Ship type
- Chemical tanker
- Gross tonnage
- 30,109
- Length overall
- 183.0 m
- Beam
- 32.2 m
- Year built
- 2008
- Flag state
- Liberia per EU MRV 2025
- Port of registry
- Monrovia MRV 2025
- Technical efficiency (design)
- EEXI (4.91 gCO₂/t·nm)
- Verifier
- HELLENIC LLOYD'S S.A., Greece
- Accreditation
- 1190
- Compliance document issued
- 2026-03-09
- Compliance document expires
- 2027-06-30
Efficiency against its own type2025
Position 423 of 1,348 qualifying chemical tankers by EEOI, at the 31st percentile. The dashed line is the type median, 14.4; this vessel reported 11.3.
EEOI divides emissions by transport work, which for this vessel and year was 204,880,531 tonne-miles over 6,951 nautical miles.
Reported CO₂ by year
Reported CO₂ in 2025 was 71.8% lower than in 2018, for EU/EEA voyages only. No return is recorded for 2019, 2020, 2023, 2024, so the series has gaps.
From 2022 to 2025, emissions fell 14.2% and CO₂ per nautical mile rose 22.9%.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
- 2,351 t
- Methane (CH₄)
- 0.04 t
- Nitrous oxide (N₂O)
- 0.13 t
- Under EU ETS
- 1,492 t, 64% of total
Verifier history
| From reporting year | Verifier | Accredited in |
|---|---|---|
| 2018 | Lloyd's Register Quality Assurance Ltd | United Kingdom |
| 2021 | HELLENIC LLOYD'S S.A. | Greece |
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 4 MRV reporting years, an efficiency ranking, 4 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.